Long-arm telescopic device

Abstract

The utility model discloses a long-arm telescopic device which comprises a telescopic arm, a walking guide rail and a supporting structure. The multiple sections of telescopic arms are sequentially nested and stretch out and draw back, and the walking guide rail is arranged on the outer walls of the multiple sections of telescopic arms and stretches out and draws back synchronously along with the multiple sections of telescopic arms. The supporting structure is installed on the telescopic arm at the tail end and used for extending to make contact with the bottom to form supporting. The long arm telescopic device has high synchronism and tail end support, so as to meet the detection requirements of long stroke and high stability.

Description

Technical Field

[0001] This utility model relates to the field of bridge inspection technology, specifically to a long-arm telescopic device. Background Technology

[0002] With the rapid development of the bridge inspection industry, stringent requirements have been placed on the lightweight, high-precision, and environmentally adaptable mobile carriers that house inspection equipment. Traditional telescopic boom systems generally employ steel structures, achieving their telescopic function through multi-stage hydraulic cylinders or rack and pinion drives. While possessing high end-load capacity, they still exhibit the following significant drawbacks in practical applications:

[0003] Firstly, in terms of structural design, traditional devices adopt a split structure, with the traveling guide rail and telescopic boom installed independently. This design means that the traveling guide rail cannot extend and retract synchronously during the extension of the telescopic boom, requiring manual segmentation or other methods for connection. This necessitates reinstallation and adjustment of the guide rail, severely impacting operational efficiency.

[0004] Secondly, in terms of synchronization performance, traditional hydraulic drive or multi-stage gear transmission systems have obvious motion lag problems, which causes the vehicle's running trajectory to deviate from the design route and affect the detection accuracy.

[0005] Finally, regarding stability: due to the large extension of the existing telescopic boom, the rigidity of the boom may be insufficient and the deflection may be large, thus affecting the operation of the testing equipment. At the same time, due to the large lateral extension of the telescopic boom, slight vibration may occur after extension, which may also affect the data acquisition of the testing equipment. In addition, due to the large unilateral extension of the telescopic boom, the traveling device under the installed telescopic boom may tilt or derail. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a long-arm telescopic device that has both high synchronization and end support to meet the detection requirements of long stroke and high stability.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a long-arm telescopic device, comprising a multi-section telescopic arm, a travel guide rail, and a support structure;

[0008] The multiple telescopic arms are nested and extend in sequence, and the traveling guide rail is arranged on the outer wall of the multiple telescopic arms and extends and extends synchronously with the multiple telescopic arms;

[0009] The support structure is installed on the telescopic arm at the far end, and the support structure is used to extend to the bottom to form support.

[0010] Furthermore, the telescopic arm comprises a reference arm and at least one extension arm. The first extension arm and the reference arm are telescopically connected via a synchronous belt power module. Adjacent extension arms are connected via a pull rope structure module, so that the remaining extension arms telescopically extend and retract synchronously with the first extension arm.

[0011] Furthermore, the synchronous belt power module includes a belt rotary motor, a belt connector, a synchronous belt, and two synchronous pulleys. The two synchronous pulleys are rotatably fixed at the beginning and end of the reference arm, respectively. The belt rotary motor is used to drive one of the synchronous pulleys to rotate. The synchronous belt is connected between the two synchronous pulleys. The belt connector is used to connect the synchronous belt to the first section of the extension arm.

[0012] Furthermore, the pull rope structure module includes a steel wire rope, a fixed pulley assembly, and hooks. In every three adjacent telescopic arm sections, the telescopic arm located at the front and rear ends is provided with the hooks. The fixed pulley assembly is located on the middle telescopic arm. After the steel wire rope passes around the fixed pulley assembly, its two ends are respectively connected to the two hooks.

[0013] Furthermore, the telescopic arm includes a pipe frame, which includes multiple pipe rods, and the multiple pipe rods are spliced ​​together to form the pipe frame.

[0014] Furthermore, the tube is a carbon fiber tube.

[0015] Furthermore, the telescopic arm also includes a support ring, which is disposed inside the pipe frame and supported on the pipe rod.

[0016] Furthermore, it also includes an auxiliary guide, which is mounted on the telescopic arm and slidably clamps the nested telescopic arm to guide the extension and retraction of the nested telescopic arm.

[0017] Furthermore, the auxiliary guide includes a first swing arm seat, a second swing arm seat, and rollers. The second swing arm seat is fixed to the end of the telescopic arm. The middle part of the first swing arm seat is hinged to one end of the second swing arm seat. There are six rollers, which are arranged in pairs at both ends of the first swing arm seat and the other end of the second swing arm seat. All the rollers can roll and clamp with the nested telescopic arm.

[0018] Furthermore, the support structure includes a lifting assembly, a support member, and an elastic buffer member. The lifting assembly is installed at the end of the multi-section telescopic arm and is used to drive the support member to descend and touch the bottom to form support. The support member is connected to the lifting assembly through the elastic buffer member.

[0019] The beneficial effects of this utility model are:

[0020] The above-mentioned long-arm telescopic device has the following advantages:

[0021] 1. High structural integration: By integrating the travel guide rail into the outer wall of the telescopic arm, the synchronous extension and retraction of the guide rail and the telescopic arm are achieved, avoiding the problem of manual segment connection required by the traditional split structure, and significantly improving the work efficiency.

[0022] 2. Good motion synchronization: The multi-section nested telescopic boom structure, combined with the synchronous belt power module and the pull rope structure module, ensures the synchronous precision control of the extension and retraction of each stage of the boom, effectively solving the motion lag problem of traditional hydraulic drive systems.

[0023] 3. Strong support stability: The end support structure forms a multi-point force structure by touching the bottom, which effectively suppresses the deflection and vibration after the long arm is extended. This not only ensures the stable operation of the testing equipment, but also improves the accuracy of data acquisition. At the same time, it prevents the risk of tilting and derailment of the walking mechanism due to unilateral force. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 A schematic diagram of the state of a long-arm telescopic device provided in an embodiment of the present invention (Figure a is a schematic diagram of the retracted state, Figure b is a schematic diagram of the unfolded state).

[0026] Figure 2 for Figure 1 A partial three-dimensional schematic diagram of the multi-section telescopic arm of the aforementioned long-arm telescopic device;

[0027] Figure 3 for Figure 1 A schematic diagram of the synchronous belt power module in the aforementioned long-arm telescopic device;

[0028] Figure 4 for Figure 1 A schematic diagram of the rope structure module in the aforementioned telescopic arm device;

[0029] Figure 5 for Figure 1 A schematic diagram of the installation of the fixed pulley assembly in the aforementioned long-arm telescopic device;

[0030] Figure 6 for Figure 1 A schematic diagram of the auxiliary guide component in the bridge box girder internal inspection robot;

[0031] Figure 7 for Figure 1 A side view of the support structure in the aforementioned long-arm telescopic device;

[0032] Figure label:

[0033] 300. Long-arm telescopic device; 310. Multi-section telescopic arm; 311. Pipe rack; 312. Support ring; 320. Synchronous belt power module; 321. Synchronous belt pulley; 322. Belt connector; 323. Synchronous belt; 330. Pull rope structure module; 331. Steel wire rope; 332. Fixed pulley assembly; 333. Hook; 340. Travel guide rail; 350. Folding arm structure; 351. Swing arm assembly; 352. Spreading drive component; 360. Support structure; 361. Lifting assembly; 362. Support component; 363. Elastic buffer component; 370. Auxiliary guide component; 371. Swing arm seat one; 372. Swing arm seat two; 373. Roller; Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0035] Please see Figures 1 to 7 The telescopic boom 300 includes multiple telescopic boom sections 310, a travel guide rail 340, and a support structure 360. The multiple telescopic boom sections 310 extend and retract sequentially, nested within each other. The travel guide rail 340 is arranged on the outer wall of the multiple telescopic boom sections 310 and extends and retracts synchronously with the multiple telescopic boom sections 310. The support structure 360 ​​is installed on the outermost telescopic boom and is used to extend and touch the bottom to form support.

[0036] In this way, since the multi-section telescopic boom 310 and the traveling guide rail 340 extend and retract synchronously, asynchronous extension and retraction can be prevented. At the same time, the support structure 360 ​​can reduce the deformation and shaking of the multi-section telescopic boom 310 and prevent the long boom telescopic device 300 from tipping over.

[0037] See Figures 1 to 5 The multi-section telescopic boom 310 includes a base boom and at least one extension boom. The first extension boom is connected to the base boom by a synchronous belt power module 320 for telescopic transmission. Adjacent extension booms are connected by a pull rope structure module 330 for transmission, so that the remaining extension booms telescopically extend and retract with the first extension boom.

[0038] The synchronous drive module 320 and the rope structure module 330 operate in sync, avoiding the situation where traditional devices typically rely on a single power source, leading to the need for the telescopic boom to move in stages and the accumulation of transmission errors. Furthermore, it avoids the problems associated with hydraulic systems, such as their bulky size, complex maintenance, and the tendency for the gear and rack structure to wear and jam during long strokes, thus affecting dynamic stability.

[0039] See Figure 3 and Figure 4 Specifically, the synchronous belt power module 320 includes a belt rotary motor, a belt connector 322, a synchronous belt 323, and two synchronous pulleys 321. The two synchronous pulleys 321 are rotatably fixed at the beginning and end of the reference arm, respectively. The belt rotary motor is used to drive one of the synchronous pulleys 321 to rotate. The synchronous belt 323 is connected between the two synchronous pulleys 321. The belt connector 322 is used to connect the synchronous belt 323 to the first extension arm.

[0040] When the belt-driven motor 321 starts, it drives the synchronous belt 323 to move, which in turn drives the second telescopic arm to extend or retract.

[0041] See Figure 4 , Figure 6 and Figure 7 The cable structure module 330 includes a wire rope 331, a fixed pulley assembly 332, and hooks 333. In every three adjacent telescopic arm sections, hooks 333 are provided at the front and rear ends of the telescopic arm. The fixed pulley assembly 332 is located on the middle telescopic arm. After the wire rope 331 passes around the fixed pulley assembly 332, its two ends are connected to two hooks 333 respectively.

[0042] With the synchronous belt power module 320 and the rope structure module 330, when the belt rotary motor 321 is started, all telescopic arms can be driven to telescopically move synchronously.

[0043] See Figure 5 In this embodiment, the telescopic boom includes a tube frame 311, which comprises multiple tube rods joined together to form the tube frame. Preferably, the tube rods are carbon fiber tubes. This reduces the overall weight of the device and minimizes deformation, shaking, and tipping of the long-stroke telescopic boom. Similarly, the travel guide rail 340 can be constructed by connecting multiple sections of carbon fiber tubes. In a more preferred embodiment, the telescopic boom also includes a support ring 312, which is disposed within the tube frame 311 and supported on the tube rods. The support ring 312 further enhances the rigidity of the entire telescopic boom.

[0044] In practice, each telescopic boom section can be connected to a truss structure using 12 carbon fiber tubes.

[0045] Please see Figure 6As a more efficient implementation, the multi-section telescopic arm 310 also includes an auxiliary guide 370, which is mounted on the telescopic arm and slidably clamps the nested telescopic arm to guide the extension and retraction of the nested telescopic arm.

[0046] Specifically, the auxiliary guide 370 includes a first swing arm seat 371, a second swing arm seat 372, and rollers 373. The second swing arm seat 372 is fixed to the end of the telescopic arm, and the middle part of the first swing arm seat 371 is hinged to one end of the second swing arm seat 372. There are six rollers 373, which are arranged in pairs at both ends of the first swing arm seat 371 and the other end of the second swing arm seat 372. All rollers 373 can roll and clamp with the nested telescopic arm.

[0047] During the movement of the telescopic boom, the six rollers 373 provide clamping force and guidance, thus ensuring the smooth operation of the telescopic boom.

[0048] In practical implementation, four sets of auxiliary guide members 370 arranged in the up, down, left, and right directions can be used to clamp and guide at the same end of the telescopic arm to further improve the clamping and guiding effect.

[0049] See Figure 7 In this embodiment, the support structure 360 ​​includes a lifting assembly 361, a support member 362, and an elastic buffer member 363. The lifting assembly 361 is installed at the end of the multi-section telescopic arm 310 and is used to drive the support member 362 to descend and touch the bottom to form support. The support member 362 is connected to the lifting assembly 361 through the elastic buffer member 363.

[0050] In use, the lifting assembly 361 drives the support member 362 to descend and form a support, which can prevent the multi-section telescopic boom 310 from bending, deforming, shaking, or tipping due to gravity, length, etc., thereby further improving operational stability. The elastic buffer member 363 can buffer the support member 362.

[0051] Specifically, the lifting assembly 361 includes a guide rail fixing plate 3611, a lifting power source 3612, a guide rail, a slider 3613, and a lower fixing seat 3614. The guide rail fixing plate 3611 is fixed to the end of the multi-section telescopic arm 310, and the lifting power source 3612 is fixed to the guide rail fixing plate 3611 to drive the slider 3613 to move vertically. The guide rail is fixed to the guide rail fixing plate 3611 to guide the slider 3613, and the support member 362 is connected to the slider 3613 through the lower fixing seat 3614.

[0052] In use, activating the lifting assembly 3612 will raise or lower the support component 362, causing it to touch the bottom and form a support. The elastic buffer component 363 can both dampen the vibration of the support component 362 and adapt more flexibly to the conditions at the bottom of the steel box girder bridge.

[0053] In this embodiment, the support member 362 includes a mounting frame 3621 and casters 3622. The mounting frame 3621 is connected to the lifting assembly 361, and the casters 3622 are mounted on the bottom of the mounting frame 3621. The casters 3622 can roll within a certain range to adapt to the conditions at the bottom of the steel box girder bridge.

[0054] This 300 long-arm telescopic device combines high synchronization and end support to meet the testing requirements of long stroke and high stability.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A long-arm telescopic device, characterized in that, Includes a multi-section telescopic boom, a travel guide rail, and a support structure; The multiple telescopic arms are nested and extend in sequence, and the traveling guide rail is arranged on the outer wall of the multiple telescopic arms and extends and extends synchronously with the multiple telescopic arms; The support structure is installed on the telescopic arm at the far end, and the support structure is used to extend to the bottom to form support.

2. The long-arm telescopic device according to claim 1, characterized in that, The telescopic arm comprises a base arm and at least one extension arm. The first extension arm and the base arm are telescopically connected by a synchronous belt power module. Adjacent extension arms are connected by a pull rope structure module so that the remaining extension arms telescopically extend and retract synchronously with the first extension arm.

3. The long-arm telescopic device according to claim 2, characterized in that, The synchronous belt power module includes a belt rotary motor, a belt connector, a synchronous belt, and two synchronous pulleys. The two synchronous pulleys are rotatably fixed at the beginning and end of the reference arm, respectively. The belt rotary motor is used to drive one of the synchronous pulleys to rotate. The synchronous belt is connected between the two synchronous pulleys. The belt connector is used to connect the synchronous belt to the first extension arm.

4. The long-arm telescopic device according to claim 2, characterized in that, The pull rope structure module includes a steel wire rope, a fixed pulley assembly, and hooks. In every three adjacent telescopic arm sections, the telescopic arm located at the front and rear ends is equipped with the hooks. The fixed pulley assembly is located on the middle telescopic arm. After the steel wire rope passes around the fixed pulley assembly, its two ends are respectively connected to the two hooks.

5. The long-arm telescopic device according to claim 1, characterized in that, The telescopic boom includes a pipe frame, which includes multiple pipe rods, and the multiple pipe rods are spliced ​​together to form the pipe frame.

6. The long-arm telescopic device according to claim 5, characterized in that, The tube is a carbon fiber tube.

7. The long-arm telescopic device according to claim 5, characterized in that, The telescopic arm also includes a support ring, which is disposed inside the pipe frame and supported on the pipe rod.

8. The long-arm telescopic device according to claim 1, characterized in that, It also includes an auxiliary guide, which is mounted on the telescopic arm and slidably clamps the nested telescopic arm to guide the extension and retraction of the nested telescopic arm.

9. The long-arm telescopic device according to claim 8, characterized in that, The auxiliary guide includes a first swing arm seat, a second swing arm seat, and rollers. The second swing arm seat is fixed to the end of the telescopic arm. The middle part of the first swing arm seat is hinged to one end of the second swing arm seat. There are six rollers, which are arranged in pairs at both ends of the first swing arm seat and the other end of the second swing arm seat. All the rollers can roll and clamp with the nested telescopic arm.

10. The long-arm telescopic device according to claim 1, characterized in that, The support structure includes a lifting assembly, a support member, and an elastic buffer member. The lifting assembly is installed at the end of the multi-section telescopic arm and is used to drive the support member to descend and touch the bottom to form support. The support member is connected to the lifting assembly through the elastic buffer member.

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