WO2023092207A1 - Cable stripping head - Google Patents
Cable stripping head Download PDFInfo
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- WO2023092207A1 WO2023092207A1 PCT/BR2022/050448 BR2022050448W WO2023092207A1 WO 2023092207 A1 WO2023092207 A1 WO 2023092207A1 BR 2022050448 W BR2022050448 W BR 2022050448W WO 2023092207 A1 WO2023092207 A1 WO 2023092207A1
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- head
- base
- clamp
- spindle
- fixed
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
Definitions
- the present disclosure relates to a cable stripper head attachable to a torque applicator device to facilitate the cable stripping process. More specifically, the present invention relates to a cable stripper that can be coupled to an external impact screwdriver, in order to transfer the operator's effort to a motorized device.
- Cable stripping is a previous and necessary step for carrying out maintenance and installation in power distribution networks and involves steps consisting of repetitive movement and the requirement of great physical effort on the part of the electrician.
- the process therefore, presents challenges from an ergonomic and work safety point of view, such as the use of gloves as personal protective equipment (PPE) and the little space for movement, especially for live line electricians, where the professional must insert the arms between phases, subject to line voltage.
- PPE personal protective equipment
- Stripping cables presents an additional challenge when it occurs in cables with larger diameters, especially at lower temperatures, as they require, respectively, greater amplitudes and greater force in the movement performed by the electrician.
- Document CN108808575 refers to a cable stripper that includes a motor, a claw, a fixed cutting clamp and a mobile cutting clamp.
- the motor is connected to one end of the claw, and the other end has a connecting groove, the fixed cutting jaw and the movable cutting jaw are both connected to the connecting groove.
- the movable cutting clamp is pushed close to the fixed cutting clamp of so that the space between the clamps is reduced and the cable is clamped.
- the collets can be interchanged to perform stripping for cables of different diameters.
- the right end of the second connecting part is fixedly connected to the motor and the left end is threadedly connected to the connecting hole on the right end of the movable cutter collet.
- the CN 108808575 solution manages to replace part of the human effort, however it still has complications.
- this hydraulic device has a high cost, which limits the viability of its use in airway maintenance operations.
- changing the cutting dies requires disassembling the device.
- disassembly of the device is necessary, which is difficult when the operator is suspended for airway maintenance.
- the present invention relates to a cable stripping head comprising a base, a fixed clamp fixed to the base, a spindle connected to the base through a threaded through hole, a mobile clamp connected to the spindle, and two dies of stripping cutters attachable to the fixed clamp and mobile clamp.
- the spindle has a slotted head to receive torque from a torque applicator device, in which the torque applied to the spindle moves the movable collet longitudinally towards the fixed collet.
- Figure 1 illustrates a perspective view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention
- Figure 2 illustrates the front view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention
- Figure 3 illustrates the assembly of the matrix in the clamp's cradle in perspective, according to the preferred embodiment of the present invention
- Figure 4 illustrates the cable stripper with the matrices mounted in perspective, according to the preferred embodiment of the present invention
- Figure 5 illustrates the front view of the stripper with the matrices mounted, according to the preferred embodiment of the present invention
- Figure 6 illustrates a longitudinal sectional view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention
- Figure 7 illustrates a side view of a cable stripper, according to the preferred embodiment of the present invention.
- Figure 8 illustrates another side view of a cable stripper, according to the preferred embodiment of the present invention.
- Figure 9 illustrates the top view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention.
- a stripper head for stripping of tension cables, according to the preferred embodiment of the present invention.
- the use of such equipment generates a minimization of rotational torque on the handle for greater axial force orthogonal to the cutting line, promoting greater comfort during the stripping process.
- This head has its base 1, a fixed collet 2 fixed to the base 1, a spindle 6 connected to the base 1 by a threaded coupling, and a movable collet 3 connected to the spindle 6.
- Two attachable stripping dies are provided in the fixed gripper 2 and in the mobile gripper 3, in which the spindle 6 has a slotted head to receive torque from a torque applicator device, in which the torque applied to the spindle 6 moves the mobile gripper 3 longitudinally in the direction of the gripper fixed 2.
- the base 1 of said head is preferably made of aluminum.
- Spindle 6 of said head is preferably made of hardened SAE 1045 steel.
- the fixed gripper 2 and the mobile gripper 3 are preferably made of hardened SAE 1045 steel. When its parts are made using the respective materials listed above, the stripping head has a total weight of about 1.5 kg.
- the fixed clamp 2 and the mobile clamp 3 have cradles 2B, 3B to receive cutting dies, which are suitable for stripping different gauges.
- the matrices are fixed to the respective cradles 2B and 3B by means of positioning spheres 7.
- the positioning spheres 7 are connected to springs and their external region is threaded for fixation in the support areas 2A and 3A.
- Figure 3 reveals two grooves on the outer face of the dies to accommodate half moon wear rings. These rings avoid direct contact between the outer faces of the die and the inner face of the gripper.
- the matrices additionally have holes for the accommodation of the positioning spheres 7 and consequent fixation.
- Figure 4 shows a perspective view of the cable stripper, in which the cutting die 12 is in its closed position.
- the fixed clamp 2 and the mobile clamp 3 have a semicircle shape.
- the cutting dies 12 have a semicircle shape corresponding to the fixed gripper 2 and the mobile gripper 3, and are provided with cutting edges 13A, 13B.
- each cutting die 12 has three cutting edges 13A, 13B are arranged such that three cutting segments are performed by each gripper/die assembly.
- the cuts made in the protective cover of the cable occur, for each gripper, in the longitudinal direction of the cable and at the height of its geometric center, in addition to two other cuts made at the ends of the die, along the radial cross-section of the cable.
- each cut along the radial cross-section of the cable is positioned at a distance of 50 millimeters from each other.
- the tweezers have bumps at their ends that accommodate the cutting dies 12, preventing them from rotating.
- the cutting dies 12 can only be coupled and uncoupled from the head by sliding movement from its side.
- the mobile clamp 3 is connected to the spindle 6.
- the movement of the mobile clamp 3 occurs through the helical thread mechanism of the threaded part of the spindle 6 with square coupling 6A, which is centered in a hole in the base 1 in which a bushing 5A establishes the interface between the base 1, static, and the threaded part of the spindle with square coupling 6A, movable.
- a thrust washer 4 is present on the external face of the support base 3A of the mobile clamp 3, which increases the integrity of the set, as it prevents wear of both the bushing stop 5A and of mobile gripper 3 in the highly repeatable movement of full opening of the grippers.
- Figure 6 illustrates a longitudinal section of the cable stripper with the clamps closed.
- the fixed clamp 2 is fixed to the base by means of two fixing screws 8.
- the mobile clamp 3 is fixed to the threaded part of the spindle with square coupling 6A by means of a locking screw 9.
- Figure 6 additionally reveals a threaded hole in the central region of the right end of the threaded part of the spindle 6A to receive the lock screw 9.
- a recess to couple the spindle 6E to the right end of the threaded part allows the fitting this in the mobile clamp 3.
- the inner part of the bushing 5 is revealed, which has an internal thread 5B.
- This internal thread forms an interface with the threaded portion of spindle 6A.
- the bushing 5 is formed by a bushing stop 5A with an internal thread 5B inserted in the threaded through hole of the base 1 , which acts as a support between spindle 6 and base 1.
- Figure 7 shows a left side view of the stripping head according to the present invention, where it is possible to observe the side of the fixed gripper.
- the base 1 comprises a base reinforcement 1A which serves as a support for the operator's grip.
- Figure 8 shows a right side view of the stripper head according to the present invention, where it is possible to observe the mobile clamp side.
- four radially equidistant fixing screws 10 are shown. These screws are inserted through the outer face of the base 1 through a through hole which extends to the stop of the bushing 5A.
- the screws are preferably hex screws.
- a recess is revealed, which is the slot for the 6G impact wrench. This region also offers a hole for the locking ball of the 6C impact wrench.
- the stripping head is coupled to a torque applicator device through the slot for the wrench 6G present in the hitch for the impact wrench 6B, which, in turn, has a hole for the locking ball 6C of the impact wrench. Details of elements 6A, 6B and 6C can be seen in Figure 2. In this way, the synchronous rotational movement between the moving part of the head and the torque applicator device is guaranteed.
- the torque applicator device is an impact screwdriver.
- the key slot is a key slot (12.7 mm).
- the spindle with square engagement 6 is a solid piece.
- Figure 9 illustrates a top view of the stripping head according to the present invention, where it is possible to observe that the clamps 2 and 3 are constituted in such a way that their width is greater than the width of the base 1.
- the stripper head further comprises a guide for the mobile clamp 1C with a straight edge sweetened.
- the sweeteners provide greater integrity to the surfaces in contact, that is, the external face of the clamp 3 and the face of the guide 1C, present at the base due to the absence of stress concentrators.
- Figure 9 also reveals that the bushing stopper 5A has a diameter of the same value as the width of the base. Increasing the region for distribution of efforts to the base 1 when the bushing stop 5A comes into contact with the thrust washer 4.
- the present invention provides a device for stripping cables capable of replacing part of the human effort in stripping, and which still dispenses with a dedicated high-cost electrical tool, such as hydraulic devices.
- a dedicated high-cost electrical tool such as hydraulic devices.
- the invention provides a device for stripping cables that allows easy replacement of a cutting die during use.
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Abstract
Description
CABEÇOTE DECAP ADOR DE CABOS CABLE TRIPPING HEAD
CAMPO TÉCNICO TECHNICAL FIELD
[001] A presente divulgação se refere a um cabeçote decapador de cabos acoplável a um dispositivo aplicador de torque para facilitar o processo de decapagem de cabos. Mais especificamente, a presente invenção se refere a um decapador de cabos acoplável a uma parafusadeira de impacto externa, de modo a transferir o esforço do operador para um dispositivo motorizado. [001] The present disclosure relates to a cable stripper head attachable to a torque applicator device to facilitate the cable stripping process. More specifically, the present invention relates to a cable stripper that can be coupled to an external impact screwdriver, in order to transfer the operator's effort to a motorized device.
FUNDAMENTOS DA INVENÇÃO FUNDAMENTALS OF THE INVENTION
[002] A decapagem de cabos é etapa prévia e necessária para a execução da manutenção e instalação nas redes de distribuição de energia e envolve etapas compostas por movimento repetitivo e exigência de grande esforço físico por parte do eletricista. O processo apresenta, portanto, desafios do ponto de vista ergonômico e de segurança do trabalho, como o uso de luvas como equipamento de proteção individual (EPI) e o pouco espaço para movimentação, sobretudo para eletricistas de linhas vivas, onde o profissional deve inserir os braços entre as fases, estando sujeito à tensão de linha. [002] Cable stripping is a previous and necessary step for carrying out maintenance and installation in power distribution networks and involves steps consisting of repetitive movement and the requirement of great physical effort on the part of the electrician. The process, therefore, presents challenges from an ergonomic and work safety point of view, such as the use of gloves as personal protective equipment (PPE) and the little space for movement, especially for live line electricians, where the professional must insert the arms between phases, subject to line voltage.
[003] A decapagem de cabos apresenta um desafio adicional quando ocorre em cabos de diâmetros de maior dimensão, sobretudo em menores temperaturas, pois exigem, respectivamente, maiores amplitudes e maior força no movimento realizado pelo eletricista. [003] Stripping cables presents an additional challenge when it occurs in cables with larger diameters, especially at lower temperatures, as they require, respectively, greater amplitudes and greater force in the movement performed by the electrician.
[004] Dessa forma, algumas soluções do estado da técnica almejam substituir parte do esforço do eletricista por máquinas elétricas portáteis, em vista da natureza dessa operação. [004] Thus, some state-of-the-art solutions aim to replace part of the electrician's effort with portable electrical machines, in view of the nature of this operation.
[005] O documento CN108808575 se refere a um decapador de cabos que inclui um motor, uma garra, uma pinça cortante fixa e uma pinça cortante móvel. O motor é conectado a uma extremidade da garra, e a outra extremidade possui uma ranhura de conexão, a garra cortante fixa e a garra cortante móvel são ambas conectadas à ranhura de conexão. Sob ação do motor a pinça cortante móvel é empurrada para perto da pinça cortante fixa de forma que o espaço entre as pinças é reduzido e o cabo é pinçado. As pinças podem ser trocadas para realizar a decapagem para cabos de diâmetros diferentes. A extremidade direita da segunda parte conectora é conectada de maneira fixa ao motor e a extremidade esquerda é conectada de maneira roscada ao furo conector na extremidade direita da pinça cortante móvel. A solução do CN 108808575 consegue substituir parte do esforço humano, no entanto ainda apresenta complicadores. Em especial, este dispositivo hidráulico apresenta alto custo, o que limita a viabilidade de seu uso em operações de manutenção de via aérea. Não obstante, a troca das matrizes de corte necessita desmontar o dispositivo. Dessa forma, caso o operador necessite decapar cabos de diâmetros diferentes, a desmontagem do dispositivo é necessária, o que é difícil no momento em que o operador está suspenso para manutenção da via aérea. [005] Document CN108808575 refers to a cable stripper that includes a motor, a claw, a fixed cutting clamp and a mobile cutting clamp. The motor is connected to one end of the claw, and the other end has a connecting groove, the fixed cutting jaw and the movable cutting jaw are both connected to the connecting groove. Under the action of the motor, the movable cutting clamp is pushed close to the fixed cutting clamp of so that the space between the clamps is reduced and the cable is clamped. The collets can be interchanged to perform stripping for cables of different diameters. The right end of the second connecting part is fixedly connected to the motor and the left end is threadedly connected to the connecting hole on the right end of the movable cutter collet. The CN 108808575 solution manages to replace part of the human effort, however it still has complications. In particular, this hydraulic device has a high cost, which limits the viability of its use in airway maintenance operations. However, changing the cutting dies requires disassembling the device. Thus, if the operator needs to strip cables of different diameters, disassembly of the device is necessary, which is difficult when the operator is suspended for airway maintenance.
[006] Outro tipo de solução encontrada no estado da técnica para ser exemplificada no documento US20130074345 Al se refere a um decapador de cabos que inclui uma montagem para alojamento composta por três partes: uma parte para manuseio, onde, em sua região interna, é alojada a bateria, uma parte de tração por um conjunto de engrenagens e um cabeçote por onde o cabo é inserido. A decapagem é realizada pelo movimento circular de um cabeçote rotativo em tomo no cabo. Uma engrenagem cônica acoplada à placa de engrenagem do cabeçote rotativo, que é composto por três superfícies cortantes que giram conjuntamente em tomo do eixo do cabo performando, dessa forma, a decapagem coaxialmente. Este documento revela uma solução diferente para decapagem de cabos, mas necessita acesso a uma das extremidades do cabo. Portanto, esses dispositivos não são desejáveis em manutenção de via aérea. [006] Another type of solution found in the state of the art to be exemplified in document US20130074345 Al refers to a cable stripper that includes an assembly for housing composed of three parts: a part for handling, where, in its internal region, it is housed the battery, a traction part by a set of gears and a head through which the cable is inserted. Stripping is carried out by the circular motion of a rotating head around the cable. A bevel gear coupled to the gear plate of the rotating head, which is composed of three cutting surfaces that rotate together around the cable axis, thus performing coaxially stripping. This document discloses a different solution for cable stripping, but it requires access to one end of the cable. Therefore, these devices are not desirable in airway maintenance.
[007] Dessa forma, surge a necessidade de um dispositivo para decapagem de cabos que seja capaz de substituir parte do esforço humano na decapagem, e que ainda possua baixo custo e alta praticidade no manuseio, de modo que possa ter disponibilidade aos eletricistas que trabalham em manutenção de vias aéreas. [007] Thus, there is a need for a cable stripping device that is capable of replacing part of the human effort in stripping, and that still has low cost and high practicality in handling, so that it can be made available to electricians who work in airway maintenance.
[008] Além disso, surge a necessidade de um dispositivo para decapagem de cabos que seja capaz de substituir parte do esforço humano na decapagem, e que permita a fácil substituição de uma matriz de corte, de modo que esta possa ser facilmente substituída durante o uso. [008] In addition, there is a need for a device for stripping cables that is capable of replacing part of the human effort in stripping, and that allows the easy replacement of a cutting die, so that it can be easily replaced during the use.
SUMÁRIO DA INVENÇÃO SUMMARY OF THE INVENTION
[009] A presente invenção se refere a um cabeçote decapador de cabos que compreende uma base, uma pinça fixa fixada na base, um fuso conectado à base por meio de um furo passante rosqueado, uma pinça móvel conectada ao fuso, e duas matrizes de corte para decapagem acopláveis na pinça fixa e na pinça móvel. O fuso possui um cabeçote com rasgo para receber torque de um dispositivo aplicador de torque, em que o torque aplicado no fuso desloca a pinça móvel no sentido longitudinal na direção da pinça fixa. [009] The present invention relates to a cable stripping head comprising a base, a fixed clamp fixed to the base, a spindle connected to the base through a threaded through hole, a mobile clamp connected to the spindle, and two dies of stripping cutters attachable to the fixed clamp and mobile clamp. The spindle has a slotted head to receive torque from a torque applicator device, in which the torque applied to the spindle moves the movable collet longitudinally towards the fixed collet.
BREVE DESCRIÇÃO DOS DESENHOS BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Uma compreensão mais completa da presente divulgação pode ser obtida em referência à descrição detalhada quando considerada em conjunto com as Figuras ilustrativas que se seguem. Nas seguintes Figuras, números de referência iguais se referem a elementos e etapas semelhantes ao longo das Figuras. [0010] A more complete understanding of the present disclosure can be obtained by referring to the detailed description when considered in conjunction with the illustrative Figures that follow. In the following Figures, like reference numerals refer to like elements and steps throughout the Figures.
[0011] A Figura 1 ilustra uma vista em perspectiva de um decapador de cabos com as pinças em contato, conforme a concretização preferencial da presente invenção; [0011] Figure 1 illustrates a perspective view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention;
A Figura 2 ilustra a vista frontal de um decapador de cabos com as pinças em contato, conforme a concretização preferencial da presente invenção; Figure 2 illustrates the front view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention;
A Figura 3 ilustra a montagem da matriz no berço da pinça em perspectiva, conforme a concretização preferencial da presente invenção; A Figura 4 ilustra o decapador de cabos com as matrizes montadas em perspectiva, conforme a concretização preferencial da presente invenção; Figure 3 illustrates the assembly of the matrix in the clamp's cradle in perspective, according to the preferred embodiment of the present invention; Figure 4 illustrates the cable stripper with the matrices mounted in perspective, according to the preferred embodiment of the present invention;
A Figura 5 ilustra a vista frontal do decapador com as matrizes montadas, conforme a concretização preferencial da presente invenção; Figure 5 illustrates the front view of the stripper with the matrices mounted, according to the preferred embodiment of the present invention;
A Figura 6 ilustra uma vista em corte longitudinal de um decapador de cabos com as pinças em contato, conforme a concretização preferencial da presente invenção; Figure 6 illustrates a longitudinal sectional view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention;
A Figura 7 ilustra uma vista lateral de um decapador de cabos, conforme a concretização preferencial da presente invenção; Figure 7 illustrates a side view of a cable stripper, according to the preferred embodiment of the present invention;
A Figura 8 ilustra uma outra vista lateral de um decapador de cabos, conforme a concretização preferencial da presente invenção; Figure 8 illustrates another side view of a cable stripper, according to the preferred embodiment of the present invention;
A Figura 9 ilustra a vista superior de um decapador de cabos com as pinças em contato, conforme a concretização preferencial da presente invenção; Figure 9 illustrates the top view of a cable stripper with the clamps in contact, according to the preferred embodiment of the present invention;
[0012] Elementos nas Figuras são ilustrados para simplicidade e clareza e não necessariamente foram apresentados em escala. [0012] Elements in the Figures are illustrated for simplicity and clarity and are not necessarily shown to scale.
DESCRIÇÃO DETALHADA DETAILED DESCRIPTION
[0013] Na descrição detalhada de modalidades exemplificadoras aqui faz referência aos desenhos anexos que mostram modalidades exemplificadoras a título de ilustração. Embora estas modalidades exemplificadoras sejam descritas em detalhes suficientes para permitir que aqueles versados na técnica pratiquem as divulgações, deve ser compreendido que outras modalidades podem ser realizadas e que mudanças e adaptações lógicas em projeto e construção podem ser feitas de acordo com esta divulgação e com os ensinamentos do presente documento. Dessa forma, a descrição detalhada aqui é apresentada para fins de ilustração apenas e não de limitação. [0013] In the detailed description of exemplary embodiments herein, reference is made to the attached drawings showing exemplary embodiments by way of illustration. While these exemplary embodiments are described in sufficient detail to allow those skilled in the art to practice the disclosures, it should be understood that other embodiments may be realized and that logical changes and adaptations in design and construction may be made in accordance with this disclosure and with the teachings of this document. As such, the detailed description here is presented for the purposes of illustration only and not limitation.
[0014] Na Figura 1 é divulgado um cabeçote decapador para decapagem de cabos tensão, conforme a concretização preferencial da presente invenção. O uso de tal equipamento gera uma minimização de torque de rotação na empunhadura para uma maior força axial ortogonal à linha de corte, promovendo maior conforto durante o processo de decapagem. [0014] In Figure 1, a stripper head is disclosed for stripping of tension cables, according to the preferred embodiment of the present invention. The use of such equipment generates a minimization of rotational torque on the handle for greater axial force orthogonal to the cutting line, promoting greater comfort during the stripping process.
[0015] Tal cabeçote possui sua base 1, uma pinça fixa 2 fixada na base 1 , um fuso 6 conectado à base 1 por um engate rosqueado, e uma pinça móvel 3 conectada ao fuso 6. São providas duas matrizes de corte para decapagem acopláveis na pinça fixa 2 e na pinça móvel 3, em que o fuso 6 possui um cabeçote com rasgo para receber torque de um dispositivo aplicador de torque, em que o torque aplicado no fuso 6 desloca a pinça móvel 3 no sentido longitudinal na direção da pinça fixa 2. [0015] This head has its base 1, a fixed collet 2 fixed to the base 1, a spindle 6 connected to the base 1 by a threaded coupling, and a movable collet 3 connected to the spindle 6. Two attachable stripping dies are provided in the fixed gripper 2 and in the mobile gripper 3, in which the spindle 6 has a slotted head to receive torque from a torque applicator device, in which the torque applied to the spindle 6 moves the mobile gripper 3 longitudinally in the direction of the gripper fixed 2.
[0016] A utilização deste equipamento provê um menor esforço, já que a força motriz utilizada na movimentação das arestas cortantes provém de um dispositivo aplicador de torque movido a bateria. Isto promove uma ergonomia postural mais adequada, pois o movimento de corte ocorre pelo movimento relativo de partes do cabeçote, não necessitando que os braços do eletricista acompanhe o movimento de corte, consequentemente a realização do procedimento ocorre mais rapidamente e, por fim, há envolvido um menor risco de choque elétrico durante a operação. [0016] The use of this equipment provides less effort, since the driving force used in moving the cutting edges comes from a battery-powered torque applicator device. This promotes a more adequate postural ergonomics, as the cutting movement occurs by the relative movement of parts of the head, not requiring the electrician's arms to follow the cutting movement, consequently the procedure is carried out more quickly and, finally, there is a lower risk of electric shock during operation.
[0017] A base 1 do referido cabeçote é preferencialmente confeccionada em alumínio. O fuso 6 do referido cabeçote é preferencialmente confeccionado em aço SAE 1045 temperado. A pinça fixa 2 e a pinça móvel 3 são preferencialmente fabricadas em aço SAE 1045 temperado. Quando suas peças são confeccionadas utilizando os respectivos materiais acima discriminados, o cabeçote decapador apresenta peso total de cerca de 1,5 kg. [0017] The base 1 of said head is preferably made of aluminum. Spindle 6 of said head is preferably made of hardened SAE 1045 steel. The fixed gripper 2 and the mobile gripper 3 are preferably made of hardened SAE 1045 steel. When its parts are made using the respective materials listed above, the stripping head has a total weight of about 1.5 kg.
[0018] Na Figura 2, a pinça fixa 2 e a pinça móvel 3 possuem berços 2B, 3B para receber matrizes de corte, que são adequadas para a decapagem de diferentes bitolas. As matrizes são fixadas aos respectivos berços 2B e 3B por meio de esferas posicionadoras 7. As esferas posicionadoras 7 são ligadas em molas e sua região externa é roscada para fixação nas áreas de apoio 2A e 3A. Quando a matriz é inserida no berço a esfera é pressionada e a mola comprimida, a mola retomando para sua posição relaxada quando a esfera posicionadora é devidamente centralizada com o furo na matriz. Este método de fixação impede todos os tipos de translação e, quando fixado em dois pontos impede também a rotação. [0018] In Figure 2, the fixed clamp 2 and the mobile clamp 3 have cradles 2B, 3B to receive cutting dies, which are suitable for stripping different gauges. The matrices are fixed to the respective cradles 2B and 3B by means of positioning spheres 7. The positioning spheres 7 are connected to springs and their external region is threaded for fixation in the support areas 2A and 3A. When the die is inserted into the cradle the ball is depressed and the spring compressed, the spring returning to its relaxed position when the locating ball is properly centered with the hole in the die. This method of fixation prevents all types of translation and, when fixed at two points, also prevents rotation.
[0019] Na Figura 2 é possível ver que na posição relaxada das molas, parte das esferas posicionadoras 7 presentes na pinça móvel 2 e na pinça fixa 3 ficam expostas. O encaixe das matrizes de corte 12 pode ser melhor observado na Figura 3. [0019] In Figure 2 it is possible to see that in the relaxed position of the springs, part of the positioning spheres 7 present in the mobile clamp 2 and in the fixed clamp 3 are exposed. The fit of the cutting dies 12 can be better observed in Figure 3.
[0020] A Figura 3 revela duas ranhuras na face externa das matrizes para acomodação de anéis de desgaste meia lua. Estes anéis evitam o contato direto entra as faces externa da matriz e interna da pinça. As matrizes possuem adicionalmente furos para a acomodação das esferas posicionadoras 7 e consequente fixação. [0020] Figure 3 reveals two grooves on the outer face of the dies to accommodate half moon wear rings. These rings avoid direct contact between the outer faces of the die and the inner face of the gripper. The matrices additionally have holes for the accommodation of the positioning spheres 7 and consequent fixation.
[0021] A Figura 4 mostra uma vista em perspectiva do decapador de cabos, em que a matriz de corte 12 está em sua posição fechada. Na concretização ilustrada na figura 4, a pinça fixa 2 e a pinça móvel 3 possuem formato de semicircunferência. As matrizes de corte 12 possuem formato de semicircunferência correspondente ao da pinça fixa 2 e da pinça móvel 3, e são munidas de arestas cortantes 13 A, 13B. Preferencialmente, cada matriz de corte 12 possui três arestas cortantes 13 A, 13B são dispostas de modo tal que três segmentos de corte são realizados por cada conjunto pinça/matriz. Os cortes realizados na capa protetora do cabo ocorrem, para cada pinça, na direção longitudinal do cabo e na altura de seu centro geométrico, em adição a outros dois cortes realizados nas extremidades da matriz, ao longo da seção transversal radial do cabo. Cada corte ao longo da seção transversal radial do cabo é posicionado a uma distância de 50 milímetros um do outro. [0022] Na Figura 5 é revelado que as pinças possuem sobressaltos nas suas extremidades que acomodam as matrizes de corte 12, evitando que elas rotacionem. Assim, as matrizes de corte 12 podem apenas ser acopladas e desacopladas do cabeçote pelo movimento deslizante a partir de sua lateral. [0021] Figure 4 shows a perspective view of the cable stripper, in which the cutting die 12 is in its closed position. In the embodiment illustrated in figure 4, the fixed clamp 2 and the mobile clamp 3 have a semicircle shape. The cutting dies 12 have a semicircle shape corresponding to the fixed gripper 2 and the mobile gripper 3, and are provided with cutting edges 13A, 13B. Preferably, each cutting die 12 has three cutting edges 13A, 13B are arranged such that three cutting segments are performed by each gripper/die assembly. The cuts made in the protective cover of the cable occur, for each gripper, in the longitudinal direction of the cable and at the height of its geometric center, in addition to two other cuts made at the ends of the die, along the radial cross-section of the cable. Each cut along the radial cross-section of the cable is positioned at a distance of 50 millimeters from each other. [0022] In Figure 5 it is revealed that the tweezers have bumps at their ends that accommodate the cutting dies 12, preventing them from rotating. Thus, the cutting dies 12 can only be coupled and uncoupled from the head by sliding movement from its side.
[0023] Como pode ser observado na Figura 5, a pinça móvel 3 é conectada ao fuso 6. O movimento da pinça móvel 3 ocorre por meio do mecanismo de rosca helicoidal da parte roscada do fuso 6 com engate quadrado 6A, que é centralizada em um furo na base 1 no qual uma bucha 5A estabelece a interface entre a base 1 , estática, e a parte roscada do fuso com engate quadrado 6 A, móvel. [0023] As can be seen in Figure 5, the mobile clamp 3 is connected to the spindle 6. The movement of the mobile clamp 3 occurs through the helical thread mechanism of the threaded part of the spindle 6 with square coupling 6A, which is centered in a hole in the base 1 in which a bushing 5A establishes the interface between the base 1, static, and the threaded part of the spindle with square coupling 6A, movable.
[0024] Ainda com referência à Figura 5, preferencialmente uma arruela de encosto 4 está presente na face externa da base de apoio 3A da pinça móvel 3, o que aumenta a integridade do conjunto, pois evita o desgaste tanto do batente da bucha 5A como da pinça móvel 3 no movimento de alta repetibilidade de abertura total das pinças. [0024] Still referring to Figure 5, preferably a thrust washer 4 is present on the external face of the support base 3A of the mobile clamp 3, which increases the integrity of the set, as it prevents wear of both the bushing stop 5A and of mobile gripper 3 in the highly repeatable movement of full opening of the grippers.
[0025] A Figura 6 ilustra um corte longitudinal do decapador de cabos com as pinças fechadas. A pinça fixa 2 é fixada na base através de dois parafusos de fixação 8. A pinça móvel 3 é fixada na parte roscada do fuso com engate quadrado 6A por meio de um parafuso de trava 9. [0025] Figure 6 illustrates a longitudinal section of the cable stripper with the clamps closed. The fixed clamp 2 is fixed to the base by means of two fixing screws 8. The mobile clamp 3 is fixed to the threaded part of the spindle with square coupling 6A by means of a locking screw 9.
[0026] A Figura 6 revela adicionalmente um furo roscado na região central da extremidade direita da parte roscada do fuso 6A para receber o parafuso de trava 9. Além disso, um rebaixo para acoplar o fuso 6E na extremidade direita da parte roscada permite o encaixe deste na pinça móvel 3. Em adição ao rebaixo para acoplar o fuso 6E há ainda uma região vizinha para a acomodação da arruela de encosto 6F. [0026] Figure 6 additionally reveals a threaded hole in the central region of the right end of the threaded part of the spindle 6A to receive the lock screw 9. In addition, a recess to couple the spindle 6E to the right end of the threaded part allows the fitting this in the mobile clamp 3. In addition to the recess to couple the spindle 6E, there is also a neighboring region for the accommodation of the thrust washer 6F.
[0027] Ainda na Figura 6 é revelado a parte interna da bucha 5, que apresenta rosca interna 5B. Está rosca interna forma uma interface com a parte roscada do fuso 6A. Assim, a bucha 5 é formada por um batente de bucha 5A com rosca interna 5B inserida no furo passante rosqueado da base 1 , que atua como apoio que intermeia o fuso 6 e a base 1. [0027] Still in Figure 6, the inner part of the bushing 5 is revealed, which has an internal thread 5B. This internal thread forms an interface with the threaded portion of spindle 6A. Thus, the bushing 5 is formed by a bushing stop 5A with an internal thread 5B inserted in the threaded through hole of the base 1 , which acts as a support between spindle 6 and base 1.
[0028] A Figura 7 mostra uma vista lateral esquerda do cabeçote decapador de acordo com a presente invenção, onde é possível observar o lado da pinça fixa. Preferencialmente, a base 1 compreende um reforço da base IA que serve como apoio para a empunhadura do operador. [0028] Figure 7 shows a left side view of the stripping head according to the present invention, where it is possible to observe the side of the fixed gripper. Preferably, the base 1 comprises a base reinforcement 1A which serves as a support for the operator's grip.
[0029] A Figura 8 mostra uma vista lateral direita do cabeçote decapador de acordo com a presente invenção, onde é possível observar o lado da pinça móvel. Na Figura 8 são revelados quatro parafusos de fixação 10 radialmente equidistantes. Estes parafusos são inseridos através da face externa da base 1 através de um furo passante que se estende até o batente da bucha 5A. Os parafusos são, preferencialmente, parafusos sextavados. [0029] Figure 8 shows a right side view of the stripper head according to the present invention, where it is possible to observe the mobile clamp side. In Figure 8, four radially equidistant fixing screws 10 are shown. These screws are inserted through the outer face of the base 1 through a through hole which extends to the stop of the bushing 5A. The screws are preferably hex screws.
[0030] Ainda com referência à Figura 8 é revelado um rebaixo, que é o rasgo para chave de impacto 6G. Esta região oferece ainda um furo para a esfera travante da chave de impacto 6C. O cabeçote decapador é acoplado a um dispositivo aplicador de torque através do rasgo para chave 6G presente no engate para chave de impacto 6B que, por sua vez, possui um furo para esfera travante 6C da chave de impacto. Detalhes dos elementos 6 A, 6B e 6C podem ser observados na Figura 2. Desta forma, garante-se o movimento rotacional síncrono entre a parte móvel do cabeçote e o dispositivo aplicador de torque. [0030] Still referring to Figure 8, a recess is revealed, which is the slot for the 6G impact wrench. This region also offers a hole for the locking ball of the 6C impact wrench. The stripping head is coupled to a torque applicator device through the slot for the wrench 6G present in the hitch for the impact wrench 6B, which, in turn, has a hole for the locking ball 6C of the impact wrench. Details of elements 6A, 6B and 6C can be seen in Figure 2. In this way, the synchronous rotational movement between the moving part of the head and the torque applicator device is guaranteed.
[0031] Preferencialmente, o dispositivo aplicador de torque é uma parafusadeira de impacto. [0031] Preferably, the torque applicator device is an impact screwdriver.
[0032] Opcionalmente, o rasgo para chave é um rasgo de (12,7 mm). [0032] Optionally, the key slot is a key slot (12.7 mm).
[0033] Na concretização preferencial ilustrada na Figura 9, o fuso com engate quadrado 6 é uma peça maciça. [0033] In the preferred embodiment illustrated in Figure 9, the spindle with square engagement 6 is a solid piece.
[0034] A Figura 9 ilustra uma vista superior do cabeçote decapador de acordo com a presente invenção, onde é possível observar que as pinças 2 e 3 são constituídas de modo tal que sua largura é maior que a largura da base 1. [0035] Na concretização opcional da Figura 9, o cabeçote decapador compreende ainda uma guia para a pinça móvel 1C com extremidade direita adoçada. Os adoçamentos conferem maior integridade às superfícies em contato, ou seja, a face externa da pinça 3 e a face da guia 1C, presente na base por meio da ausência de concentradores de tensão. [0034] Figure 9 illustrates a top view of the stripping head according to the present invention, where it is possible to observe that the clamps 2 and 3 are constituted in such a way that their width is greater than the width of the base 1. [0035] In the optional embodiment of Figure 9, the stripper head further comprises a guide for the mobile clamp 1C with a straight edge sweetened. The sweeteners provide greater integrity to the surfaces in contact, that is, the external face of the clamp 3 and the face of the guide 1C, present at the base due to the absence of stress concentrators.
[0036] A Figura 9 revela ainda que o batente da bucha 5A possui diâmetro de mesmo valor que a largura da base. Aumentando a região para distribuição de esforços para a base 1 quando o batente da bucha 5A entra em contato com a arruela de encosto 4. [0036] Figure 9 also reveals that the bushing stopper 5A has a diameter of the same value as the width of the base. Increasing the region for distribution of efforts to the base 1 when the bushing stop 5A comes into contact with the thrust washer 4.
[0037] Portanto, a presente invenção provê um dispositivo para decapagem de cabos capaz de substituir parte do esforço humano na decapagem, e que ainda dispensa uma ferramenta elétrica dedicada de alto custo, tal como dispositivos hidráulicos. Assim, a solução apresenta baixo custo e alta praticidade no manuseio, podendo ser disponibilizado aos eletricistas que trabalham em manutenção de vias aéreas. [0037] Therefore, the present invention provides a device for stripping cables capable of replacing part of the human effort in stripping, and which still dispenses with a dedicated high-cost electrical tool, such as hydraulic devices. Thus, the solution is low cost and highly practical in handling, and can be made available to electricians who work in airway maintenance.
[0038] Em adição, a invenção prove um dispositivo para decapagem de cabos que permite a fácil substituição de uma matriz de corte durante o uso. [0038] In addition, the invention provides a device for stripping cables that allows easy replacement of a cutting die during use.
[0039] Inúmeras variações incidindo no escopo de proteção do presente pedido são permitidas. Dessa forma, reforça-se o fato de que a presente invenção não está limitada às configurações/concretizações particulares acima descritas. [0039] Numerous variations affecting the scope of protection of this application are allowed. This reinforces the fact that the present invention is not limited to the particular configurations/embodiments described above.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR1020210236299 | 2021-11-24 | ||
| BR102021023629A BR102021023629A2 (en) | 2021-11-24 | 2021-11-24 | CABLE TRIPPING HEAD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023092207A1 true WO2023092207A1 (en) | 2023-06-01 |
Family
ID=84192021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2022/050448 Ceased WO2023092207A1 (en) | 2021-11-24 | 2022-11-17 | Cable stripping head |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR102021023629A2 (en) |
| WO (1) | WO2023092207A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8101114U (en) * | 2001-05-16 | 2003-02-18 | Lien-Huang Liu | Electric cable stripper. |
| US20130074345A1 (en) * | 2011-09-22 | 2013-03-28 | Milwaukee Electric Tool Corporation | Wire stripping tool |
| CN104124649A (en) * | 2014-08-14 | 2014-10-29 | 国家电网公司 | Cable stripping tool |
| CN108808575A (en) * | 2018-09-04 | 2018-11-13 | 广东电网有限责任公司 | Wire stripper |
| CN209088422U (en) * | 2018-12-25 | 2019-07-09 | 国网北京市电力公司 | A kind of auxiliary tool of conducting wire skin stripping |
| CN111404088A (en) * | 2020-03-26 | 2020-07-10 | 国网安徽省电力有限公司霍邱县供电公司 | A kind of fast wire stripper for insulated wire |
| CN211790463U (en) * | 2020-05-22 | 2020-10-27 | 宁志海 | Multifunctional cutter with rotary cutter head |
-
2021
- 2021-11-24 BR BR102021023629A patent/BR102021023629A2/en unknown
-
2022
- 2022-11-17 WO PCT/BR2022/050448 patent/WO2023092207A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8101114U (en) * | 2001-05-16 | 2003-02-18 | Lien-Huang Liu | Electric cable stripper. |
| US20130074345A1 (en) * | 2011-09-22 | 2013-03-28 | Milwaukee Electric Tool Corporation | Wire stripping tool |
| CN104124649A (en) * | 2014-08-14 | 2014-10-29 | 国家电网公司 | Cable stripping tool |
| CN108808575A (en) * | 2018-09-04 | 2018-11-13 | 广东电网有限责任公司 | Wire stripper |
| CN209088422U (en) * | 2018-12-25 | 2019-07-09 | 国网北京市电力公司 | A kind of auxiliary tool of conducting wire skin stripping |
| CN111404088A (en) * | 2020-03-26 | 2020-07-10 | 国网安徽省电力有限公司霍邱县供电公司 | A kind of fast wire stripper for insulated wire |
| CN211790463U (en) * | 2020-05-22 | 2020-10-27 | 宁志海 | Multifunctional cutter with rotary cutter head |
Also Published As
| Publication number | Publication date |
|---|---|
| BR102021023629A2 (en) | 2022-11-29 |
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