A high-altitude work platform frame positioning fixture device

Abstract

This utility model relates to the field of tooling positioning technology and discloses a high-altitude work vehicle frame positioning tooling device, including: a tooling chassis, positioning component one symmetrically arranged on the front and rear left side of the top of the tooling chassis, positioning component two arranged between the front and rear positioning components one, multiple sets of support members arranged in the top center of the tooling chassis, positioning component three symmetrically arranged on the left and right sides of the support members, positioning component four arranged on the left side of positioning component three, and a tail support component arranged on the right side of positioning component three. Positioning component one, positioning component two, positioning component three, positioning component four and the tail support component are used to position the front side, the center of the front side, the four corners of the middle, the bottom and the rear side of the workpiece, respectively. The positioning component one, positioning component two, positioning component three, positioning component four and the tail support component achieve comprehensive coverage positioning of the key parts of the workpiece, reduce production costs, and ensure the positional stability of the workpiece during processing.

Description

Technical Field

[0001] This utility model relates to the field of tooling positioning technology, specifically a high-altitude work vehicle frame positioning tooling device. Background Technology

[0002] In the manufacturing process of aerial work platforms, the frame, as the core load-bearing structure, directly determines the overall performance, safety, and service life of the platform through its machining precision. Welding and cutting are critical processes in frame machining. Before these processes, the frame workpiece must be precisely and stably fixed using positioning fixtures to ensure that subsequent machining dimensions meet design standards.

[0003] Currently, the positioning fixtures for aerial work platforms in the industry use relatively simple positioning methods, generally employing either side positioning or top-bottom positioning structures. Side positioning typically involves fixing the workpiece horizontally by setting clamping or limiting components on both sides; top-bottom positioning uses a combination of top clamping and bottom support to achieve vertical positioning. However, in actual processing, welding processes generate localized high temperatures, causing thermal deformation stress on the workpiece, while cutting processes exert impact forces on the workpiece. Under these external forces, tooling devices relying solely on side or top-bottom positioning are insufficient to provide comprehensive and stable constraint on the workpiece.

[0004] Specifically, when using two-sided positioning, key parts such as the front and rear ends, the four corners in the middle, and the bottom of the workpiece lack effective positioning support. Welding thermal deformation or cutting impact force can easily cause the workpiece to shift in the unconstrained area. If top and bottom positioning is used, although it can limit the displacement of the workpiece in the vertical direction, the positioning stability in the horizontal direction, especially the front and rear direction, is insufficient, which will also cause the workpiece to have positional deviation during processing.

[0005] This workpiece misalignment problem not only causes welding joints to be misaligned and cutting dimensions to exceed accuracy standards, but also increases the workload of subsequent correction processes. In severe cases, it can lead to workpiece scrapping, reduce production efficiency, increase manufacturing costs, and make it difficult to meet the needs of large-scale, high-precision production of aerial work platform frames. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a high-altitude work platform frame positioning fixture device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A high-altitude work platform frame positioning fixture device includes: a fixture chassis, a positioning component 1 symmetrically arranged on the front and rear left side of the top of the fixture chassis, a positioning component 2 arranged between the front and rear positioning components 1, a plurality of support members arranged at the top center of the fixture chassis, positioning components 3 symmetrically arranged on the left and right sides of the support members, a positioning component 4 arranged on the left side of the positioning component 3, and a tail support component arranged on the right side of the positioning component 3. The positioning components 1, 2, 3, 4 and the tail support component are used to position the front side, the center of the front side, the four corners of the middle, the bottom and the rear side of the workpiece, respectively.

[0008] Preferably, the positioning component includes: a guide rail, two sets of guide rails are arranged in parallel on the top left side of the tooling chassis, a movable block is slidably mounted on the guide rail, a positioning seat is fixedly mounted on the movable block, and multiple sets of round shaft pins are provided on the side of the positioning seat near the center of the tooling chassis. The round shaft pins are used to embed into the workpiece and position the front side of the workpiece. The guide rail is used to realize the positioning seat moving back and forth on the guide rail.

[0009] Preferably, the positioning component three includes: a support base, the support bases are arranged in pairs on the front and rear sides of the tooling chassis, each pair of support bases are symmetrically arranged on the left and right sides of the tooling chassis, a limit piece is fixedly provided on the lower front side of each support base, an L-shaped plate is movably provided on the top of the support base through a rotating shaft, and short pins and long pins are respectively provided on the left and right L-shaped plates, the short pins and long pins can be connected by embedding an external pin, the short pins and long pins are used to fix the middle right side plate of the workpiece after connection; The tooling chassis is also equipped with support seats on the front and rear sides of the top left side. These support seats have only long pins, which are used to connect with external pins to fix the middle left side plate of the workpiece.

[0010] Preferably, the positioning component two includes: a support column one, which is located at the top center of the left side of the tooling chassis; support columns two and three are respectively provided on the left and right sides of support column one; positioning pins are fixedly provided on the upper part of support column one and the lower front part of support columns two and three; buffer pads are provided on the top of support columns two and three; and the positioning pins are used to connect and position with the front side plate of the workpiece.

[0011] Preferably, the positioning component four includes: guide rail two, which are arranged in pairs on the front and rear sides of the top of the tooling chassis. A movable seat is embedded in the guide rail two. A connecting plate is provided on the top of the movable seat on the left and right sides. A limiting protrusion is provided on the side of the movable seat away from the center of the tooling chassis. A hydraulic cylinder seat is provided on the side of the movable seat close to the center of the tooling chassis. A hydraulic cylinder is fixedly installed on the hydraulic cylinder seat. The top of the telescopic rod of the hydraulic cylinder is fixedly connected to the movable seat. The hydraulic cylinder is used to drive the movable seat to move along the guide rail two. After the limiting protrusion contacts the workpiece, it limits the bottom of the workpiece.

[0012] Compared with the prior art, this utility model provides a positioning fixture for a high-altitude work vehicle frame, which has the following advantages: Positioning component one moves the positioning seat back and forth via guide rail one, and uses a round shaft pin to embed into the workpiece, accurately positioning the front side of the workpiece; positioning component two connects to the front side plate of the workpiece with positioning pins on support columns one, two, and three, further fixing the center of the front side of the workpiece; positioning component three, through paired support seats, and in conjunction with long pins, short pins, and external pins, limits and fixes the left and right side plates and four corners of the middle part of the workpiece respectively; positioning component four uses a hydraulic cylinder to drive the moving seat to move along guide rail two, and constrains the bottom of the workpiece through limiting protrusions; the tail support component supports and positions the rear side of the workpiece.

[0013] The components work together to achieve comprehensive coverage positioning of key parts from the front, front center, four corners of the middle, bottom to the rear of the workpiece. This effectively offsets the effects of welding heat deformation stress and cutting impact on the workpiece, solves the problem of workpiece offset caused by incomplete positioning in existing devices, and ensures the positional stability of the workpiece during processing.

[0014] Because of its stable positioning and lack of obstruction to processing, it effectively reduces the rework rate caused by positioning adjustments or workpiece offsets, further reducing production costs and making it more suitable for mass production and continuous production scenarios of aerial work platform frames. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of positioning component three in this utility model; Figure 3 This is a side-view perspective view of the three-dimensional structure of the positioning component three in this utility model; Figure 4 This is a three-dimensional structural diagram of the positioning component one in this utility model; Figure 5 This is a three-dimensional structural diagram of positioning component four in this utility model; Figure 6 This is a three-dimensional structural diagram of positioning component two in this utility model; Figure 7 This is a three-dimensional structural diagram of the present invention combined with the workpiece; Figure 8 This is a three-dimensional structural diagram of the present invention separated from the workpiece.

[0016] The components include: 1. Tooling chassis; 2. Positioning component one; 3. Positioning component three; 4. Positioning component two; 5. Positioning component four; 7. Workpiece; 101. Support component; 201. Guide rail one; 202. Moving block; 203. Positioning seat; 204. Round shaft pin; 301. Support seat; 302. L-shaped plate; 303. Limiting component; 304. Long pin; 305. Short pin; 401. Supporting square column two; 402. Supporting square column one; 403. Supporting square column three; 404. Positioning pin; 501. Guide rail two; 502. Moving seat; 503. Connecting plate; 504. Hydraulic cylinder; 505. Hydraulic cylinder seat. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-8 As shown, this embodiment of a high-altitude work vehicle frame positioning fixture includes a fixture chassis 1. The fixture chassis 1 serves as the basic load-bearing structure of the entire device, providing a stable installation platform for each positioning component. Its material is high-strength steel to ensure that it can withstand the weight of the workpiece 7 and the external impact during the processing.

[0019] Positioning components 1-2 are symmetrically arranged on the top left side of the tooling chassis 1. The two sets of positioning components 1-2 are fixedly connected to the tooling chassis 1 by bolts, facilitating future maintenance and replacement. Positioning components 2-4 are arranged between the front and rear positioning components 1-2, and are fixed to the tooling chassis 1 by welding, ensuring a firm connection. Multiple sets of support members 101 are arranged at the top center of the tooling chassis 1. The support members 101 are evenly distributed in the central area of ​​the tooling chassis 1 and are detachably connected to the tooling chassis 1 by bolts, allowing for easy adjustment of their number and position according to the size of the workpiece 7.

[0020] Positioning components 3 are symmetrically arranged on the left and right sides of the support component 101. Positioning components 3 are fixed to the tooling base 1 by a combination of welding and bolts, balancing connection strength and ease of adjustment. A positioning component 4 is located on the left side of positioning component 3, connected to the tooling base 1 via an embedded installation to ensure stability during operation. A tail support component is located on the right side of positioning component 3, detachably connected to the tooling base 1 by bolts, allowing for flexible position adjustment according to the rear dimensions of the workpiece 7.

[0021] Positioning component 2 includes guide rails 201. Two sets of guide rails 201 are arranged parallel to each other on the top left side of the tooling base 1. The guide rails 201 are fixedly connected to the tooling base 1 by bolts. A moving block 202 is slidably fitted on the guide rail 201. A wear-resistant coating is provided between the moving block 202 and the guide rail 201 to reduce wear when they slide relative to each other. A positioning seat 203 is fixedly mounted on the moving block 202. The positioning seat 203 is connected to the moving block 202 by welding. Multiple sets of round shaft pins 204 are provided on the side of the positioning seat 203 near the center of the tooling base 1. The round shaft pins 204 are detachably connected to the positioning seat 203 by threads for easy replacement after wear.

[0022] Positioning component 3 includes a support base 301, which is arranged in pairs on the front and rear sides of the tooling chassis 1. Each pair of support bases 301 is symmetrically arranged on the left and right sides of the tooling chassis 1, and the support bases 301 are fixedly connected to the tooling chassis 1 by welding. A limiting component 303 is fixedly installed on the lower front side of each support base 301, and the limiting component 303 is connected to the support base 301 by bolts. An L-shaped plate 302 is movably mounted on the top of the support base 301 via a rotating shaft. Grease is provided between the rotating shaft, the support base 301, and the L-shaped plate 302 to ensure smooth rotation of the L-shaped plate 302. Short pins 305 and long pins 304 are respectively provided on the left and right sides of the L-shaped plate 302, and both short pins 305 and long pins 304 are detachably connected to the L-shaped plate 302 by threads.

[0023] Positioning component 2 4 includes a first support column 402, which is located at the top center of the left side of the tooling base 1 and is fixedly connected to the tooling base 1 by welding. Second support columns 401 and third support columns 403 are respectively located on the left and right sides of the first support column 402, and both are connected to the tooling base 1 by welding. Positioning pins 404 are fixedly installed on the upper part of the first support column 402 and on the lower front side of the second and third support columns 401 and 403. The positioning pins 404 are detachably connected to each support column by threads. Buffer pads made of rubber are installed on the top of the second and third support columns 401 and 403, and are bonded to the support columns to prevent collision damage to the workpiece 7 during placement.

[0024] Positioning component four 5 includes guide rail two 501, which are arranged in pairs on the front and rear sides of the top of the tooling chassis 1. The guide rail two 501 is connected to the tooling chassis 1 by embedded mounting. A movable seat 502 is embedded and movably mounted on the guide rail two 501. A guide bar is provided between the movable seat 502 and the guide rail two 501 to ensure that the movable seat 502 moves smoothly along the guide rail two 501. A connecting plate 503 is provided on the top of the movable seat 502 on the left and right sides, and the connecting plate 503 is connected to the movable seat 502 by bolts. A limiting protrusion is provided on the side of the movable seat 502 away from the center of the tooling chassis 1. The limiting protrusion is connected to the movable seat 502 by welding. A hydraulic cylinder seat 505 is provided on the side of the movable seat 502 close to the center of the tooling chassis 1. The hydraulic cylinder seat 505 is connected to the movable seat 502 by bolts. A hydraulic cylinder 504 is fixedly installed on the hydraulic cylinder seat 505. The hydraulic cylinder 504 is connected to the hydraulic cylinder seat 505 by bolts. The top of the telescopic rod of the hydraulic cylinder 504 is fixedly connected to the movable seat 502.

[0025] In some examples, the guide rail 201 of the positioning component 2 is provided with travel limit blocks at both ends, and the travel limit blocks are detachably connected to the guide rail 201 by bolts. The travel limit blocks can limit the movement range of the moving block 202, prevent the moving block 202 from slipping off the two ends of the guide rail 201 due to operational errors, protect the structural integrity of the positioning component 2, and at the same time avoid the misalignment between the round shaft pin 204 and the workpiece 7 due to excessive movement of the moving seat 502.

[0026] In some examples, a return spring is provided between the L-shaped plate 302 and the support base 301 of the positioning component 3, with both ends of the return spring connected to the L-shaped plate 302 and the support base 301 respectively. When the external pin is removed, the return spring can automatically reset the L-shaped plate 302, eliminating the need for manual adjustment of the L-shaped plate 302 position, reducing the workload of operators, and improving the efficiency of loading and unloading workpieces 7, which is especially suitable for scenarios involving the processing of large batches of workpieces 7.

[0027] In some examples, a pressure sensor is installed on the hydraulic cylinder 504 of the positioning component 4 5. The pressure sensor is connected to an external control system via a wire. The pressure sensor can monitor the output pressure of the hydraulic cylinder 504 in real time. When the pressure exceeds the preset value, the external control system will issue an alarm and stop the operation of the hydraulic cylinder 504 to prevent the workpiece 7 from deforming or the positioning component from being damaged due to excessive pressure in the hydraulic cylinder 504, thus ensuring the safety of the processing process and the processing accuracy of the workpiece 7.

[0028] In some examples, a height adjustment bolt is provided on the top of the tail support assembly, which is connected to the tail support assembly via threads. By rotating the height adjustment bolt, the support height of the tail support assembly can be adjusted, allowing the tail support assembly to adapt to the rear side of workpieces 7 of different thicknesses, ensuring the stability of the support on the rear side of workpiece 7, and avoiding positioning offset caused by inconsistent heights on the rear side of workpiece 7.

[0029] The working principle of this utility model is as follows: When using this aerial work platform frame positioning fixture, the initial preparation and debugging of the device must be completed according to the dimensions and specifications of the aerial work platform frame of the workpiece 7 to be processed. Place the fixture chassis 1 on a flat surface in the workshop, ensuring that the fixture chassis 1 is level to provide a stable foundation for subsequent positioning. Simultaneously, check and adjust the number and spacing of the central support members 101 at the top of the fixture chassis 1 according to the length and width of the workpiece 7. Fix the support members 101 to the appropriate positions for supporting the bottom of the workpiece 7 by removing or installing bolts, ensuring that the workpiece 7 receives uniform support after placement.

[0030] Next, we proceed to the positioning operation stage of workpiece 7, starting with front and front center positioning. For positioning component 12, the operator pushes the moving block 202 to slide back and forth along guide rail 1201. According to the position of the positioning hole on the front side of workpiece 7, the positioning seat 203 is adjusted to the corresponding position. Then, the multiple sets of round shaft pins 204 on the positioning seat 203 are aligned with the positioning hole on the front side of workpiece 7 and inserted. Through the cooperation of the round shaft pins 204 and the positioning hole, the initial positioning of the front side of workpiece 7 is achieved. At the same time, positioning component 24 plays a role. The front side plate of workpiece 7 is attached to the front side of support column 1 402, support column 2 401 and support column 3 403. The positioning pins 404 on the upper part of support column 1 402, support column 2 401 and support column 3 403 are inserted into the corresponding holes on the front side plate of workpiece 7, further fixing the center of the front side of workpiece 7. The rubber buffer pads on the top of support column 2 401 and support column 3 403 can prevent collision damage to workpiece 7 when it is placed, ensuring accurate and stable front positioning.

[0031] Next, the four corners and bottom of the middle part of workpiece 7 are positioned. For positioning component 3, the left and right side plates of the middle part of workpiece 7 are respectively attached to the support seats 301 arranged in pairs on the front and rear sides of the tooling chassis 1. The limiting part 303 on the lower front side of the support seat 301 first limits the bottom of the middle side plate of workpiece 7 to prevent the workpiece 7 from shifting left and right. The operator rotates the L-shaped plate 302 on the top of the support seat 301. For the middle right side plate, the short pins 305 and long pins 304 on the left and right L-shaped plates 302 are aligned and the external pins are inserted to connect the two, thereby clamping and fixing the middle right side plate. For the middle left side plate, the long pins 304 on the support seat 301 are directly engaged with the external pins to fix the middle left side plate. In this way, the four corners of the middle part of workpiece 7 are stably limited. At the same time, the hydraulic cylinder 504 of the positioning component 4 is activated. The telescopic rod of the hydraulic cylinder 504 pushes the moving seat 502 to move along the guide rail 2 501 until the limiting protrusion on the side of the moving seat 502 away from the center of the tooling chassis 1 contacts the bottom edge of the workpiece 7. The hydraulic cylinder 504 stops running, and the limiting protrusion constrains the bottom of the workpiece 7 to prevent the workpiece 7 from moving up and down during processing.

[0032] Finally, the positioning of the rear side of workpiece 7 is completed. Based on the height and width of the rear side of workpiece 7, the position of the tail support component is adjusted. The tail support component is detachably connected to the tooling base 1 by bolts, which is easy to adjust. The top of the tail support component is tightly fitted with the bottom of the rear side of workpiece 7, providing stable support for the rear side of workpiece 7 and preventing the rear side of workpiece 7 from sagging and shifting during processing due to lack of support.

[0033] Once workpiece 7 is fully positioned, welding or cutting processes can begin. During processing, positioning components 1 (2), 2 (4), 3 (3), and 4 (5), along with the tail support component, work together to form a comprehensive constraint from the front, center, four corners, and bottom of workpiece 7 to the rear. This effectively counteracts the thermal deformation stress from welding and the impact force from cutting, preventing workpiece 7 from shifting and ensuring processing accuracy. Furthermore, the structural design of each positioning component avoids the main processing areas of workpiece 7, preventing obstruction of the operator's work and eliminating the need for frequent disassembly of the positioning components, thus improving processing efficiency.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aerial device frame positioning tooling apparatus, comprising: include: The tooling chassis (1) has a positioning component 1 (2) symmetrically arranged on the top left side of the tooling chassis (1), and a positioning component 2 (4) arranged between the positioning components 1 (2) on the front and back sides. Multiple sets of support components (101) are arranged in the center of the top of the tooling chassis (1). Positioning components 3 (3) are symmetrically arranged on the left and right sides of the support components (101). Positioning component 4 (5) is arranged on the left side of positioning component 3 (3), and a tail support component is arranged on the right side of positioning component 3 (3). Positioning components 1 (2), 2 (4), 3 (3), 4 (5) and the tail support component are used to position the front side, the center of the front side, the four corners of the middle part, the bottom and the rear side of the workpiece (7) respectively.

2. The high aerial work platform frame positioning tooling device of claim 1, wherein, The positioning component 1 (2) includes: guide rail 1 (201), two sets of guide rail 1 (201) are arranged in parallel on the top left side of the tooling chassis (1), a moving block (202) is slidably fitted on the guide rail 1 (201), a positioning seat (203) is fixedly installed on the moving block (202), and multiple sets of round shaft pins (204) are provided on the side of the positioning seat (203) near the center of the tooling chassis (1). The round shaft pins (204) are used to embed into the workpiece (7) and position the front side of the workpiece (7). The guide rail 1 (201) is used to realize the positioning seat (203) moving back and forth on the guide rail 1 (201).

3. The high aerial work platform frame positioning tooling device of claim 1, wherein, Positioning component three (3) includes: support base (301), the support base (301) is arranged in pairs on the front and rear sides of the tooling chassis (1), each pair of support bases (301) is symmetrically arranged on the left and right sides of the tooling chassis (1), the lower front side of the support base (301) is fixedly provided with limit piece (303), the top of the support base (301) is movably provided with L-shaped plate (302) through a rotating shaft, the left and right sides of the L-shaped plate (302) are respectively provided with short pin (305) and long pin (304), the short pin (305) and long pin (304) can be connected by embedding external pin, the short pin (305) and long pin (304) are used to connect and fix the middle right side plate of the workpiece (7); The tooling chassis (1) is also provided with a support seat (301) on the front and rear sides of the top left side. The support seat (301) has only a long pin (304), which is used to connect with an external pin to fix the middle left side plate of the workpiece (7).

4. The high aerial work platform frame positioning tooling device of claim 1, wherein, Positioning component two (4) includes: support column one (402), which is located at the top center of the left side of the tooling chassis (1). Support column two (401) and support column three (403) are respectively provided on the left and right sides of support column one (402). Positioning pins (404) are fixedly provided on the upper part of support column one (402), the lower front part of support column two (401) and support column three (403). Buffer pads are provided on the top of support column two (401) and support column three (403). Positioning pins (404) are used to connect and position with the front side plate of workpiece (7).

5. The aerial work platform frame positioning fixture device according to claim 1, characterized in that, Positioning component four (5) includes: guide rail two (501), guide rail two (501) is arranged in pairs on the front and rear sides of the top of the tooling chassis (1), a movable seat (502) is embedded in the guide rail two (501), a connecting plate (503) is provided on the top of the movable seat (502) on the left and right sides, a limiting protrusion is provided on the side of the movable seat (502) away from the center of the tooling chassis (1), a hydraulic cylinder seat (505) is provided on the side of the movable seat (502) close to the center of the tooling chassis (1), a hydraulic cylinder (504) is fixedly provided on the hydraulic cylinder seat (505), the top of the telescopic rod of the hydraulic cylinder (504) is fixedly connected to the movable seat (502), the hydraulic cylinder (504) is used to drive the movable seat (502) to move along the guide rail two (501), and after the limiting protrusion contacts the workpiece (7), it limits the bottom of the workpiece (7).

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