CN220639693U

CN220639693U - Automatic ladder stand of working vehicle and working vehicle

Info

Publication number: CN220639693U
Application number: CN202322446756.6U
Authority: CN
Inventors: 李文静; 李恩荣; 田忠猛; 宋萍; 崔文涛
Original assignee: Tongya Automobile Manufacturing Co Ltd
Current assignee: Tongya Automobile Manufacturing Co Ltd
Priority date: 2023-09-10
Filing date: 2023-09-10
Publication date: 2024-03-22
Anticipated expiration: 2033-09-10

Abstract

The utility model relates to an automatic ladder stand for a working vehicle and the working vehicle, which belong to the technical field of special working vehicles and comprise a plurality of pedal assemblies, wherein each pedal assembly comprises a pedal and a scissor arm connected to two sides of the pedal, the scissor arm is hinged to the side edge of the pedal through the middle part, and the plurality of pedal assemblies are hinged and connected to form a scissor telescopic structure; the top of the topmost pedal assembly is connected with a connecting plate parallel to the pedal, the connecting plate is used for connecting a ladder and a working vehicle, the front end of the pedal of the topmost pedal assembly is provided with a bracket, and the bracket is respectively hinged with the pedal and the connecting plate; a telescopic driving piece is also connected between the connecting plate and the bracket and used for driving the telescopic expansion and retraction of the scissor-fork type telescopic structure; when the telescopic driving piece drives the scissor type telescopic structure to be unfolded, the connecting plate is horizontal; when the utility model is operated, the horizontal unfolding, the retraction and other actions of the ladder stand pedal can be realized only by operating the control button, and the operation is convenient and flexible.

Description

Automatic ladder stand of working vehicle and working vehicle

Technical Field

The utility model relates to the technical field of heavy trucks and special working vehicles, in particular to an automatic ladder stand of a working vehicle and the working vehicle.

Background

The heavy special working vehicles are various, and commonly include environment-friendly working types, road obstacle clearing types, lifting loading and unloading types, engineering construction emergency fire fighting types, medical rescue types and the like. Generally, these vehicles have high vehicle height, complex structure and compact upper space due to various functional requirements and running and passing performances of the vehicles. However, in general, such a vehicle is usually operated at the rear upper part of the vehicle, and when the vehicle arrives at the work site, the vehicle must climb onto the rear body to perform an operation, maintenance inspection, and the like, and therefore, it is necessary to climb a ladder by means of a boarding ladder.

In the prior art, the boarding ladder structure of many vehicles is a fixed boarding ladder or a manually pulled telescopic ladder structure, such as a vehicle ladder and a working vehicle disclosed in the patent with the publication number of CN213144357U, which comprises a pedal assembly and a first connecting piece, wherein the pedal assembly is connected with a supporting piece through the first connecting piece, the tread surface of the pedal is arranged opposite to the supporting piece, so that the deformation or tipping of the supporting piece can be reduced, and the stability of the ladder is improved; and the height of the vehicle ladder stand can adapt to vehicle types with different heights through the combination of pedal assemblies with different numbers.

The above-mentioned prior art structure does not have any layout influence on a vehicle with a simple working mechanism, but has some influence on various links such as the layout of the working mechanism of the vehicle, the overall size of the vehicle, etc. in the case of a vehicle with a complex structure and a compact space.

Therefore, the automatic ladder stand is small in occupied space, can be automatically telescopic and folded, can be randomly combined into automatic ladder stands with different heights and spans through standardized design, can be operated up and down conveniently by an operator, can effectively utilize limited space of a vehicle, and improves safety of the vehicle.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an automatic crawling ladder for an electric control operation vehicle and the operation vehicle, wherein the operation such as unfolding and retracting of the crawling ladder can be realized only by operating a control button during operation, and the operation is convenient and flexible.

The technical scheme for solving the technical problems is as follows:

on one hand, the utility model provides an automatic ladder stand for a working vehicle, which is characterized by comprising a plurality of pedal assemblies, wherein each pedal assembly comprises a pedal and scissor arms connected to two sides of the pedal, the scissor arms are hinged to the side edges of the pedal through the middle part, and the plurality of pedal assemblies are hinged to form a scissor telescopic structure;

the top of the topmost pedal assembly is connected with a connecting plate parallel to the pedal, the connecting plate is used for connecting a ladder and a working vehicle, the front end of the pedal of the topmost pedal assembly is provided with a bracket, and the bracket is respectively hinged with the pedal and the connecting plate;

a telescopic driving piece is further connected between the connecting plate and the bracket and used for driving the telescopic expansion and retraction of the scissor-fork type telescopic structure; when the telescopic driving piece drives the scissor type telescopic structure to be unfolded, the connecting plate is horizontal.

Further, the scissor arms are hinged to the middle of the lateral edges of the pedals through the middle.

Further, the bottom of the pedal assembly at the bottom is connected with a bottom pedal parallel to the pedal, the front end of the bottom pedal is hinged with the bottom end of the scissor arm of the pedal assembly at the bottom, the middle part of the bottom pedal is hinged with a hinge arm, and the hinge arm is hinged with the tail end of the pedal assembly at the bottom.

Further, the bottom of bottom footboard is provided with the anti-skidding callus on sole with adjustable height.

Further, a step-down space is provided on the pedal of the topmost pedal assembly corresponding to the telescopic driving member, for providing an accommodating space for the telescopic driving member when the scissor type telescopic structure is retracted.

Further, the connecting plate is used for being connected with the tail of the working vehicle in a hinged mode through the front end of the connecting plate, and the connecting plate is connected with a turnover driving piece used for driving the connecting plate to turn around a hinge point of the connecting plate and the working vehicle.

Furthermore, the overturning driving piece and the telescopic driving piece adopt an air cylinder, a hydraulic oil cylinder or an electric telescopic cylinder.

Furthermore, the connecting plate is also connected with handrails.

In another aspect, the utility model provides a work vehicle, comprising a vehicle body and a ladder attached to the rear of the vehicle body, wherein the ladder is an automatic work vehicle ladder as described above.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the pedal assembly consisting of the pedal and the scissor fork arms is arranged, the plurality of pedal assemblies are hinged to form the scissor fork type telescopic structure, and the telescopic driving piece for driving the scissor fork type telescopic structure to stretch is arranged, so that the pedal steps can be unfolded in a horizontal state, and can be retracted when not used, so that the space is saved; the actions such as the expansion and the retraction of the cat ladder can be realized only by electric control, and the operation is simple.

2. According to the utility model, the overturning driving piece and the connection relation between the overturning driving piece and the vehicle body and the ladder pedal can realize overturning when the ladder is retracted and not used.

3. The beneficial effects of the working vehicle with the ladder stand structure are the same as those of the ladder stand, and are not repeated here.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a usage state reference diagram of an embodiment of the present utility model;

FIG. 3 is a schematic view of the pedal assembly of the present utility model;

FIG. 4 is a schematic view of the structure of the scissor type telescoping structure of the present utility model;

in the figure: 1. the bicycle comprises pedals, 2, scissor arms, 3, connecting plates, 4, brackets, 5, a telescopic driving piece, 51, a yielding space, 6, a bottom pedal, 7, an articulated arm, 8, an adjustable foot pad, 9, a turnover driving piece, 10, an armrest, 100, a pedal assembly, 200, a scissor telescopic structure and 300, and a bicycle body.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the illustrated embodiments are provided for illustration only and are not intended to limit the scope of the present utility model.

As shown in fig. 1-4, the present embodiment provides an automatic ladder for a working vehicle, which includes a plurality of pedal assemblies 100, each pedal assembly 100 includes a pedal 1 and scissor arms 2 respectively connected to two sides of the pedal 1, the scissor arms 2 are hinged to the middle of the side edges of the pedal 1 through the middle, and the plurality of pedal assemblies 100 are hinged to form a scissor telescopic structure 200;

the top of the topmost pedal assembly 100 is connected with a connecting plate 3 parallel to the pedal 1, the rear end of the connecting plate 3 is hinged with the top of the corresponding scissor arm 2, the connecting plate 3 is used for connecting a ladder and a working vehicle, the front end of the topmost pedal assembly 100, namely the pedal 1, is provided with a bracket 4, the bracket 4 in the implementation is of a U-shaped structure, on one hand, the bottom of the bracket 4 is hinged with the front end of the pedal 1, on the other hand, two side arms of the bracket 4 are parallel to the scissor arm 2, and the top end of the bracket is hinged with the side edges of the connecting plate 3;

a telescopic driving piece 5 is further connected between the connecting plate 3 and the bracket 4 and is used for driving the telescopic expansion and retraction of the scissor type telescopic structure 200, the telescopic driving piece 5 of the embodiment adopts an air cylinder, and in other embodiments, the telescopic driving piece can also adopt a structural form of a hydraulic oil cylinder or an electric telescopic cylinder; one end of the telescopic driving piece 5 in the embodiment is hinged with the bracket 4, the other end of the telescopic driving piece is hinged with the connecting plate 3, and the telescopic driving piece 5 forms an acute angle with the connecting plate 3; when the telescopic driving piece 5 drives the scissor type telescopic structure 200 to be unfolded, the connecting plate 3 is horizontal, and all pedals 1 are horizontal at the moment. In addition, a throttle valve can be arranged on a control air path or an oil path connected with the telescopic driving piece to control the expanding and retracting speed of the ladder.

In addition, the bottom of the bottommost pedal assembly 100 is connected with a bottom pedal 6 parallel to the pedal 1, the front end of the bottom pedal 6 is hinged with the bottom end of the scissor arm 2 of the bottommost pedal assembly 100, the middle part of the bottom pedal 6 is hinged with a hinge arm 7, the lower end of the hinge arm 7 is connected with the bottom pedal 6, the top end of the hinge arm 7 is hinged with the tail end of the pedal 1 of the bottommost pedal assembly 100, and the bottom pedal 6 and the pedals 1 form a step structure together.

When the telescopic ladder is used, the plurality of pedal assemblies 100 are hinged and connected to form the scissor type telescopic structure 200, and the automatic telescopic of the ladder can be realized by controlling the telescopic driving piece 5 to stretch, namely, the automatic 45-degree backward unfolding and 45-degree forward tilting and the automatic 45-degree forward tilting of the ladder are realized, and the telescopic ladder is shown in fig. 2. In order to avoid the influence of the telescopic driving piece 5 on retraction in the retraction process, a stepping board 1 at the rear side of the telescopic driving piece 5, namely, the stepping board 1 of the topmost stepping board assembly 100, may be provided with a yielding space 51 corresponding to the telescopic driving piece 5, so as to provide an accommodating space for the telescopic driving piece 5 when the scissor type telescopic structure 200 is retracted, so that the scissor type telescopic structure 200 is in a fully compressed state after retraction, the compressed structural volume is reduced, and the telescopic driving piece 5 is hidden therein at the moment.

In addition, in order to ensure the light weight requirement, the pedals and the scissor arms can be made of aluminum alloy materials, the strength is high, the weight is light, the device can be widely applied to operation maintenance and material handling on various vehicles, and the working efficiency and the safety are greatly improved.

In another preferred embodiment of the present utility model, the bottom of the bottom pedal 6 is provided with a height-adjustable anti-slip foot pad 8, specifically, a screw structure with a certain length can be adopted as the main body, the height of the foot pad is adjusted by screwing in or screwing out the screw so as to make the foot pad contact with the ground, and an anti-slip rubber pad can be adopted as the bottom so as to realize the contact stress of the pedal with the ground after the pedal is stretched, thereby preventing the bottom of the ladder from not contacting the ground and the unstable ladder support from shaking.

In another preferred embodiment of the utility model, the pedal and the scissor arms of the ladder are in universal design, the installation is connected by adopting pins, and the number of steps can be combined according to the actual height of the vehicle, so that the universality is realized.

In another preferred embodiment of the utility model, the connecting plate 3 is used for being hinged with the tail of the working vehicle through the front end of the connecting plate, the connecting plate 3 is connected with a turnover driving piece 9, the turnover driving piece 9 of the embodiment adopts an air cylinder, and a hydraulic oil cylinder or an electric telescopic cylinder can also be adopted in other embodiments; one end of the overturning driving piece 9 is hinged to the tail of the vehicle body, the other end of the overturning driving piece is hinged to a hinged seat fixedly arranged on the connecting plate 3 and used for driving the connecting plate 3 to overturn around a hinged point of the connecting plate and the working vehicle, and the overturning driving piece can overturn when the crawling ladder is retracted and not used.

In another preferred embodiment of the utility model, the connecting plate 3 is also connected with handrails 10, which are convenient for people to walk up when ascending stairs.

The utility model also provides a working vehicle, as shown in fig. 2, which comprises a vehicle body 300 and a ladder connected to the tail of the vehicle body 300, wherein the ladder is the automatic ladder of the working vehicle, and the front end of the ladder, namely the connecting plate 3, is hinged with the vehicle body 300.

Claims

1. The automatic ladder stand for the working vehicle is characterized by comprising a plurality of pedal assemblies (100), wherein each pedal assembly (100) comprises a pedal (1) and scissor arms (2) connected to two sides of the pedal (1), the scissor arms (2) are hinged to the side edges of the pedal (1) through the middle part, and the plurality of pedal assemblies (100) are hinged to form a scissor telescopic structure (200);

the top of the topmost pedal assembly (100) is connected with a connecting plate (3) parallel to the pedal (1), the connecting plate (3) is used for connecting a ladder stand and a working vehicle, the front end of the pedal (1) of the topmost pedal assembly (100) is provided with a bracket (4), and the bracket (4) is respectively hinged with the pedal (1) and the connecting plate (3);

a telescopic driving piece (5) is further connected between the connecting plate (3) and the bracket (4) and used for driving the telescopic expansion and retraction of the scissor type telescopic structure (200); when the telescopic driving piece (5) drives the scissor type telescopic structure (200) to be unfolded, the connecting plate (3) is horizontal.

2. The automatic ladder stand for a working vehicle according to claim 1, characterized in that the scissor arms (2) are hinged in the middle of the lateral edges of the pedal (1) by means of a middle part.

3. The automatic ladder stand for a working vehicle according to claim 2, characterized in that the bottom of the bottommost pedal assembly (100) is connected with a bottom pedal (6) parallel to the pedal (1), the front end of the bottom pedal (6) is hinged with the bottom end of the scissor arm (2) of the bottommost pedal assembly (100), the middle part of the bottom pedal (6) is hinged with an articulated arm (7), and the articulated arm (7) is hinged with the tail end of the pedal (1) of the bottommost pedal assembly (100).

4. An automatic ladder for a working vehicle according to claim 3, characterized in that the bottom of the bottom pedal (6) is provided with a height-adjustable anti-slip foot pad (8).

5. The automatic ladder of a work vehicle according to claim 1, characterized in that a step-down space is provided on the step (1) of the topmost step assembly (100) corresponding to the telescopic driving member (5) for providing a receiving space for the telescopic driving member (5) when the scissor telescopic structure (200) is retracted.

6. The automatic ladder stand of a working vehicle according to claim 1, characterized in that the connection plate (3) is adapted to be connected with the tail of the working vehicle by means of its front end in a hinged manner, the connection plate (3) being connected with a tilting drive (9) for driving the connection plate (3) to tilt about its hinge point with the working vehicle.

7. The automatic ladder of a work vehicle according to claim 6, characterized in that the tilting drive (9) is a cylinder, a hydraulic cylinder or an electric telescopic cylinder.

8. The working vehicle automatic ladder according to claim 1, characterized in that the telescopic drive (5) is a cylinder, a hydraulic cylinder or an electric telescopic cylinder.

9. The working vehicle automatic ladder according to claim 1, characterized in that the connection plate (3) is also connected with handrails (10).

10. A working vehicle comprising a vehicle body (300) and a ladder attached to the rear of the vehicle body (300), wherein the ladder is the working vehicle automatic ladder according to any one of claims 1 to 9.