EP3895845A1 - Clé dynamométrique hydraulique - Google Patents
Clé dynamométrique hydraulique Download PDFInfo
- Publication number
- EP3895845A1 EP3895845A1 EP20213999.4A EP20213999A EP3895845A1 EP 3895845 A1 EP3895845 A1 EP 3895845A1 EP 20213999 A EP20213999 A EP 20213999A EP 3895845 A1 EP3895845 A1 EP 3895845A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- wrench
- hydraulic
- unit
- driver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
- B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
Definitions
- the present invention relates to a hydraulic torque wrench, and more particularly, to a hydraulic torque wrench capable of providing an output torque value in real time.
- a hydraulic torque wrench as a tool that fastens bolts with a target torque value by the power of hydraulic pressure sent from a hydraulic pump is essentially widely used for bolts fastened in various structures such as a power plant, petrochemical, construction, automobile, shipbuilding, railway, etc.
- a method for tightening the bolt of the hydraulic torque wrench includes a torque method, a rotation angle method, and a torque inclination method, but the torque method is most commonly used, and the torque method requires that a tightening area is an elastic range of the bolt and does not exceed a yield tightening axial force.
- the torque value for each facility determined by trial and error for a long time based on standard and theoretical calculations, is set as the target torque value when tightening the bolts, and the bolting work is carried out under thorough management.
- the hydraulic torque wrench is continuously exposed to changes in output torque values due to friction-based variables and changes in working conditions at the site, but because the exposure cannot be solved by checking the output torque values in real time, it is very important to carry out regular or irregular examination and calibration in order to overcome the problem and in general, the examination and calibration are carried out at a period of 3 months, 6 months, 12 months or special schedule depending on work contents and a frequency of use.
- changes in the output torque value may occur as the work environment changes such as hydraulic pump replacement and operator change, and even in this case, the torque value output from the hydraulic torque wrench should be checked in real time to respond and it also necessary to develop a technology that can acquire the output torque value as real-time digital data in preparation for the use of product service.
- the present invention is to solve the problem, and the present invention has been made in an effort to mount a sensor and an electronic circuit device capable of sensing an output torque value in a hydraulic torque wrench and provide a measured torque value to an external terminal in real time or display or provide the measured torque value through a display.
- the present invention has been made in an effort to allow a worker to check the output torque value in real time at the time of tightening a bolt or nut by using the hydraulic torque wrench to enable a immediate site response so as to maintain the output value to be the same as a target torque value set differently according to a work facility.
- the present invention has been made in an effort to acquire the torque value measured in real time as digital data and apply the acquired torque value for a product utilizing loT.
- a hydraulic torque wrench includes: a hydraulic unit into which hydraulic pressure applied from the outside is input; a driving unit providing driving force by the hydraulic pressure applied through the hydraulic unit; and a ratchet unit including a wrench driver which is rotated by the driving force and a wrench socket coupled to the wrench driver, in which the ratchet unit includes a torque measurement unit installed in the wrench driver and providing data of measured torque.
- a sensor and an electronic circuit device capable of sensing an output torque value in a hydraulic torque wrench and provide a measured torque value to an external terminal in real time or display or provide the measured torque value through a display.
- FIG. 1 is a perspective view illustrating an exterior of a hydraulic torque wrench according to an embodiment of the present invention
- FIG. 2 is a configuration diagram of a hydraulic torque wrench according to an embodiment of the present invention
- FIGS. 3 and 4 are diagrams illustrating a wrench driver of the hydraulic torque wrench according to an embodiment of the present invention
- FIG. 5 is a configuration diagram of a torque measurement unit of the hydraulic torque wrench according to an embodiment of the present invention.
- a hydraulic torque wrench 100 is configured to include a hydraulic unit 110, a driving unit 120, and a ratchet unit 130.
- the hydraulic unit 110 may include a hydraulic port unit having an input port and an output port for applying hydraulic pressure. That is, as a hose of an external hydraulic generating device (e.g., a hydraulic pump, etc.) is coupled to the hydraulic port unit, the hydraulic pressure generated from the external hydraulic generating device may be applied through the hydraulic unit 110.
- an external hydraulic generating device e.g., a hydraulic pump, etc.
- the driving unit 120 is a component for providing driving force by the hydraulic pressure applied through the hydraulic unit 110, and may include a driving motor and a driving driver.
- the ratchet unit 130 includes a wrench driver 131, a wrench socket 139, and a torque measurement unit 140 as illustrated in FIG. 2 .
- the wrench driver 131 is rotated by the driving force applied through the driving unit 120.
- One surface of the wrench socket 139 is coupled to a square driver unit 132 of the wrench driver 131 and the other surface is manufactured by a shape and a size corresponding to the shape and the size of a circumferential surface of a nut used for tightening a bolt to be fastened to be utilized for fastening the nut to the bolt to be tightened according to the rotation of the wrench driver 131.
- the torque measurement unit 140 as a component capable of measuring an output torque value (actual torque value) at the time of driving fastening between the bolt and the nut is installed in the wrench driver 131 in the ratchet 130.
- the wrench driver 131 may be manufactured to include a square driver portion 132, a body portion 133, and a receiving portion 135.
- a gear 134 is formed on the surface of the body portion 133 so that the driving force of the driving portion 120 is applied.
- the receiving portion 135 for receiving a circuit portion A in the torque measurement unit 140 may be formed in the body portion 133.
- the torque measurement unit 140 may be configured to a torque sensor 141 and a predetermined circuit portion (amplifier 142, A/D converter 143 and a communication module 144, a battery (not illustrated), etc.).
- a torque sensor 141 a strain gauge capable of measuring a torque value may be used.
- the torque sensor 141 may be installed in the wrench driver 131 to measure the output torque during fastening driving between the bolt and the nut, and the amplifier 142 may amplify the measured torque signal, the A/D converter 143 may convert the amplified torque signal into a digital signal, and the communication module 144 may transmit the digital signal to an external terminal 200.
- the external terminal 200 such as a smart phone, a tablet, a notebook, a PC, etc., may receive torque data measured by the torque sensor 141 in real time (see FIG. 2 ).
- a display may be manufactured to be installed on the hydraulic torque wrench 100, and in this case, the measured torque value may be directly disposed in the hydraulic torque wrench 100 itself.
- the hydraulic torque wrench 100 when used, it is possible to allow a worker to check the output torque value in real time at the time of tightening a bolt or nut by using the hydraulic torque wrench to enable an immediate site response so as to maintain the output value to be the same as a target torque value set differently according to a work facility.
- the torque sensor 141 may be installed on the surface of an intermediate space (i.e., a portion (hereinafter, referred to as a sensor mounted portion 136) where the gear 134 is not formed in the body portion 133) between a portion where the square driver unit 132 and a portion where the gear 134 is formed in the wrench driver 131.
- the sensor mounted portion 136 is provided to be recessed inside a circumference than the portion where the gear 134 is formed so that a height when the torque sensor 141 is installed may be lower than a thread height of the gear 134 when considering a thickness of the torque sensor 141.
- the torque sensors 141 may be arranged at a predetermined interval along the circumference of a cylindrical body portion 133 of the wrench driver 131 (for example, four torque sensors may be arranged in the sensor mounted portion 136 of the cylindrical body portion 133. After the torque sensor 141 is installed, the entirety of the sensor mounted portion 136 may be taping-processed for fixing and sealing the torque sensor 141.
- circuit portion A in the torque measurement unit 140 except for the torque sensor 141 is installed in the receiving portion 135 inside the body portion 133 of the wrench driver 131 and in this case, a through-hole is provided at a predetermined position of the body portion 133 for connecting wires between the circuit portion A and the torque sensor 141.
- the through-hole extends up to the receiving portion 135 by penetrating the surface of the body portion 133 and to this end, one end of the through-hole may be formed at a predetermined position of a boundary between the gear 134 and the sensor mounted portion 136 on an outer circumferential surface of the body portion 133 and the other end may be formed at a predetermined position of an inner circumferential surface of the receiving portion 135.
- the torque sensor 141 installed on the surface of the outer circumferential surface of the body portion 133 and the circuit portion A mounted inside the receiving portion 135 are electrically connected by wires through the through-hole.
- a predetermined sealing cap (not illustrated) may be hermetically coupled to an upper surface of the receiving portion 135 in order to seal the circuit portion A.
- a coupling portion e.g., threads for screw coupling
- the sealing cap may be provided on the upper end of the inner circumferential surface of the receiving portion 135.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200046885A KR102414904B1 (ko) | 2020-04-17 | 2020-04-17 | 유압 토크 렌치 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3895845A1 true EP3895845A1 (fr) | 2021-10-20 |
Family
ID=73838910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20213999.4A Withdrawn EP3895845A1 (fr) | 2020-04-17 | 2020-12-15 | Clé dynamométrique hydraulique |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3895845A1 (fr) |
| KR (2) | KR102414904B1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115356035A (zh) * | 2022-10-20 | 2022-11-18 | 华东交通大学 | 一种螺栓拧紧转矩检测系统及检测方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230113010A (ko) | 2022-01-21 | 2023-07-28 | 한전케이피에스 주식회사 | 유압 토크 렌치 |
| KR102671619B1 (ko) * | 2022-03-30 | 2024-06-03 | 주식회사 건호엔지니어링 | 유압 토크 렌치 |
| KR102706567B1 (ko) * | 2022-03-30 | 2024-09-13 | 주식회사 건호엔지니어링 | 유압식 토크렌치의 제어 시스템 |
| KR102705607B1 (ko) | 2022-07-22 | 2024-09-23 | 주식회사 티에스 | 유압 토크 렌치 |
| KR102662341B1 (ko) | 2022-07-22 | 2024-04-29 | 이태구 | 유압 토크 렌치 |
| KR20250028832A (ko) | 2023-08-22 | 2025-03-04 | 신우산업 주식회사 | 유압식 토크렌치 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29607207U1 (de) * | 1996-04-20 | 1997-08-21 | Wagner, Paul-Heinz, 53804 Much | Hydraulischer Kraftschrauber |
| DE20112833U1 (de) * | 2001-07-07 | 2002-11-14 | Wagner, Paul-Heinz, 53804 Much | Druckbetriebener Kraftschrauber |
| WO2003013797A1 (fr) * | 2001-08-02 | 2003-02-20 | Paul-Heinz Wagner | Procede de commande d'une visseuse fonctionnant par intermittence |
| US20040187650A1 (en) * | 2001-07-07 | 2004-09-30 | Ulf Sittig | Pressure-operated power screwdriver having a measuring section |
| WO2012114361A1 (fr) * | 2011-02-25 | 2012-08-30 | Scs Concept Italia S.R.L. | Clé hydraulique |
| DE102015103903A1 (de) * | 2015-03-17 | 2016-09-22 | Juko Technik Gmbh | Kraftschrauber mit direkter Drehwinkel- und/oder Drehmomentmessung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017062556A (ja) * | 2015-09-24 | 2017-03-30 | ローム株式会社 | 電動工具の作業状態管理システムおよび作業状態管理方法、および電動工具 |
-
2020
- 2020-04-17 KR KR1020200046885A patent/KR102414904B1/ko active Active
- 2020-12-15 EP EP20213999.4A patent/EP3895845A1/fr not_active Withdrawn
-
2022
- 2022-05-30 KR KR1020220066291A patent/KR20220078549A/ko not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29607207U1 (de) * | 1996-04-20 | 1997-08-21 | Wagner, Paul-Heinz, 53804 Much | Hydraulischer Kraftschrauber |
| DE20112833U1 (de) * | 2001-07-07 | 2002-11-14 | Wagner, Paul-Heinz, 53804 Much | Druckbetriebener Kraftschrauber |
| US20040187650A1 (en) * | 2001-07-07 | 2004-09-30 | Ulf Sittig | Pressure-operated power screwdriver having a measuring section |
| WO2003013797A1 (fr) * | 2001-08-02 | 2003-02-20 | Paul-Heinz Wagner | Procede de commande d'une visseuse fonctionnant par intermittence |
| WO2012114361A1 (fr) * | 2011-02-25 | 2012-08-30 | Scs Concept Italia S.R.L. | Clé hydraulique |
| DE102015103903A1 (de) * | 2015-03-17 | 2016-09-22 | Juko Technik Gmbh | Kraftschrauber mit direkter Drehwinkel- und/oder Drehmomentmessung |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115356035A (zh) * | 2022-10-20 | 2022-11-18 | 华东交通大学 | 一种螺栓拧紧转矩检测系统及检测方法 |
| CN115356035B (zh) * | 2022-10-20 | 2023-02-07 | 华东交通大学 | 一种螺栓拧紧转矩检测系统及检测方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20210128790A (ko) | 2021-10-27 |
| KR20220078549A (ko) | 2022-06-10 |
| KR102414904B1 (ko) | 2022-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3895845A1 (fr) | Clé dynamométrique hydraulique | |
| AU2019257498B2 (en) | Pipe fitting with sensor | |
| RU2530182C2 (ru) | Устройство для создания момента затяжки с точным крутящим моментом для резьбовых соединений | |
| EP1409880B1 (fr) | Systeme et procede pour mesurer la flexion dans un ergot | |
| US20060225511A1 (en) | Device for measuring pre-stressing force in a bolt-nut connection | |
| US9574952B2 (en) | Pressure detection device | |
| US20170016469A1 (en) | Intelligent washer | |
| CN104792445A (zh) | 无线联动式扭矩传感器 | |
| CN101629862A (zh) | 压力计 | |
| US11598682B2 (en) | Sensor device and method for monitoring a clamping force exerted by a clamping element of a clamping device on a component | |
| US11536618B2 (en) | External tie-rod load indicator | |
| US20220349462A1 (en) | Slew drive systems and methods of use thereof | |
| KR20230171686A (ko) | 유압 토크 렌치 안전 체결장치 | |
| KR20250045096A (ko) | 디지털 인디케이터를 포함하는 유압 토크 렌치 | |
| CN108008142B (zh) | 角速度传感器以及角速度的测量方法 | |
| EP4410488A1 (fr) | Clé dynamométrique | |
| CN223426121U (zh) | 一种力传感器 | |
| KR20240002780A (ko) | 안전밸브 검교정 및 개방 작동 압력 검사장치에서 데이터 신뢰성 향상 방법 | |
| EP0845654A1 (fr) | Capteur de position, notamment pour les unités cylindre-piston | |
| TWM617171U (zh) | 螺栓鎖固作業用的螺栓夾緊力傳感器 | |
| HK1256340B (en) | Pipe fitting with sensor | |
| RILL et al. | SensorDisc–a novel approach to in-situ assessment of bolt load and condition. | |
| AU1020100A (en) | Monitoring tension of threaded fasteners | |
| JP2019018290A (ja) | センサ付き締め付け工具およびこれを用いたシステム |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| B565 | Issuance of search results under rule 164(2) epc |
Effective date: 20210602 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20220420 |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20230519 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20230930 |