Boom vehicle frame point splicing tool

Abstract

The utility model discloses a jib frame splicing tool which comprises a front axle support, a seat ring support and a rear axle support which are sequentially and coaxially arranged on a base, the front axle support and the rear axle support are respectively and fixedly installed on the base, a front axle reference part is arranged on the front axle support, a frame front axle is installed with the front axle support through the front axle reference part, and a frame rear axle is installed with the rear axle support through the seat ring support. The seat ring support is connected with the base in a sliding mode, a seat ring reference part is arranged on the seat ring support, the frame seat ring and the seat ring support are installed through the seat ring reference part, a rear axle positioning part is arranged on the rear axle support, the frame rear axle and the rear axle support are installed through the rear axle positioning part, and at least three sets of front axle supports are arranged in the direction perpendicular to the frame front axle. The size of the whole frame is positioned in advance through welding, the precision of the frame is improved, the positions of a front axle support and a seat ring support are selected according to the design size, the tool adaptation range is widened, a front axle hole, a rear axle hole and a seat ring hole do not need to be machined after being welded, and the machining time is omitted.

Description

Technical Field

[0001] The utility model relates to a jig for assembling and aligning the frame of an articulated vehicle, belonging to the technical field of jigs for assembling and aligning. Background Art

[0002] The frame of an articulated vehicle plays a crucial role in modern manufacturing. However, the technical defects and challenges in its production process not only affect production efficiency but also bring high costs. The traditional manual assembling and aligning process is particularly cumbersome and time-consuming due to the large size and heavy weight of the frame parts.

[0003] Firstly, the size of the articulated vehicle frame is usually large, resulting in a large number of parts to be processed and heavy weights during the assembling process. The traditional manual assembling and aligning process becomes extremely laborious in this case. Workers need to manually splice and align each part, which is not only time-consuming but also poses a high safety hazard during the operation. When dealing with heavy parts, workers are prone to the risk of mechanical injuries, especially in the case of long-term operation and repetitive labor, the probability of safety accidents increases significantly. In addition, manual assembling and aligning are also likely to cause a decrease in the accuracy of the frame due to improper operation, thus affecting the final quality of the frame.

[0004] Secondly, the traditional manufacturing process often fails to meet the requirements of high precision. During the production process of the articulated vehicle frame, due to insufficient manufacturing precision, key parts such as the seat ring, front axle hole, and rear axle hole often require post-welding processing. This post-welding processing not only increases the complexity of the production process but also relies on large gantry machining centers. The investment cost of these devices is very high, not only occupying a large amount of production resources but also imposing a huge financial pressure on manufacturing enterprises. The high investment and maintenance costs of the equipment directly lead to high manufacturing costs of the product, thus affecting the competitiveness of the enterprise.

[0005] Furthermore, the productivity problem in the machining process cannot be ignored. Compared with other processes, the productivity of machining is often restricted by equipment conditions. The processing capacity of machining equipment often becomes a bottleneck process during the peak production season. This problem is particularly prominent during the peak demand period, restricting the overall productivity improvement of the production line. The overloading of machining equipment may not only cause production delays but also affect the quality stability of products. In this case, the production efficiency cannot be effectively improved, thus limiting the overall production capacity and market response speed of the enterprise. Summary of the Invention

[0006] Object of the Invention: To solve the above technical problems, the utility model provides a jig for assembling and aligning the frame of an articulated vehicle, which pre-position the dimensions of the overall frame welding through the front axle reference part on the front axle support, the seat ring reference part on the seat ring support, and the rear axle positioning part on the rear axle support, so as to improve the accuracy of the frame dimensions during welding.

[0007] Technical solution: An arm vehicle frame assembly point tooling, which includes a front axle support, a seat ring support, and a rear axle support that are coaxially arranged on a base in sequence. The front axle support and the rear axle support are respectively fixedly installed on the base. A front axle reference part is provided on the front axle support, and the front axle of the frame is installed on the front axle support through the front axle reference part. The seat ring support is slidably connected to the base and reciprocates in a direction perpendicular to the front axle of the frame. A seat ring reference part is provided on the seat ring support, and the seat ring of the frame is installed on the seat ring support through the seat ring reference part. A rear axle positioning part is provided on the rear axle support, and the rear axle of the frame is installed on the rear axle support through the rear axle positioning part. At least three groups of front axle supports are arranged in a direction perpendicular to the front axle of the frame.

[0008] The utility model pre-dimensionally positions the welding of the overall frame through the front axle reference part on the front axle support, the seat ring reference part on the seat ring support, and the rear axle positioning part on the rear axle support, improving the accuracy of the frame size during welding. By adjusting the position of the seat ring support, the tooling can be adapted to different vehicle models. Based on the rear axle support as the reference for the frame length, different positions of the front axle support can be selected to install the front axle of the frame, making it applicable to frames of different lengths.

[0009] Before welding, first select the front axle support with the corresponding size according to the structural dimensions of the frame, with the rear axle support as the reference for the length. The front axle supports can be used in combination. Then move the seat ring support to the position corresponding to the seat ring of the frame and fix it. After all the positioning is completed, install the front axle and rear axle of the frame in sequence. The front axle of the frame is positioned and installed through the front axle reference part, and the rear axle of the frame is positioned and installed through the rear axle positioning part. Then install the frame beams on both sides in sequence. Finally, install the seat ring of the frame according to the seat ring reference part to complete the frame assembly point tooling. Among them, the front axle hole, rear axle hole, and turntable seat ring hole of the frame have been machined before welding and do not need to be machined after welding, eliminating machining and reducing manufacturing costs and time.

[0010] Preferred option: In order to achieve precise positioning of the height dimension of the front axle of the frame, the front axle reference part includes a reference groove that runs through the front axle support in a direction perpendicular to the front axle of the frame and a reference shaft installed on the reference groove. The front axle of the frame is positioned and installed on the reference groove through the reference shaft.

[0011] A hole for the reference shaft to pass through is provided on the front axle of the frame. After passing the reference shaft through the front axle of the frame, it is installed in the reference groove to complete the precise positioning of the front axle of the frame in terms of height.

[0012] Preferred option: To provide support for the front axle of the frame, prevent it from shaking, and further improve the installation accuracy of the reference axis, the front axle support also includes support parts symmetrically arranged along the reference groove. The support parts are higher than the reference groove. Support shafts corresponding to the support parts are arranged on the front axle of the frame. Equally spaced gaps are respectively arranged between the support shafts and the support parts in the vertical direction.

[0013] Openings corresponding to the support parts are also arranged on the front axle of the frame. After the support shafts pass through these openings respectively, due to the equally spaced gaps arranged between the support parts and the support shafts, these equally spaced gaps are adjustment allowances. During installation, the front axle of the frame will tilt to any side, that is, the outer cylindrical surface of any support shaft contacts the top of any support part, and there is a gap between the other support shaft and the other support part, so as to ensure the accurate positioning of the reference axis. If no gap is set, it will cause the reference axis to be suspended, thereby reducing the accuracy of the overall frame size. The equally spaced gap between the support part and the support shaft is 0.5 mm. After the front axle of the frame tilts to any side, the height difference between the two sides does not exceed 1 mm. On the basis of not affecting the product performance, the accuracy of the overall vehicle size is improved. At the same time, after the frame beam is welded, the front axle of the frame is completely fixed and will no longer shake.

[0014] Preferred option: To position the frame seat ring, positioning holes corresponding to the frame seat ring are arranged on the seat ring reference part. The seat ring reference part is positioned and installed with the frame seat ring through the positioning holes.

[0015] Holes corresponding to the seat ring reference part are arranged on the frame seat ring. After aligning the two holes, they are fixed by a pin shaft, and then the frame seat ring and the frame beam are welded to complete the installation and positioning of the frame seat ring.

[0016] Preferred option: To achieve the positioning and installation of the rear axle of the frame, the rear axle positioning part is a stepped wheel. The rear axle of the frame is positioned and installed with the rear axle support through the stepped wheel.

[0017] Holes for installing the stepped wheel are arranged on the rear axle of the frame. Select a stepped wheel of the corresponding size according to the designed hole size. The stepped wheel is positioned and installed with the rear axle support, thereby ensuring the accuracy of the positioning of the rear axle of the frame.

[0018] Preferred option: To achieve the installation of the internal structure of the frame, it further includes mounting plate supports. The mounting plate supports are respectively arranged on both sides of the seat ring support and are arranged in opposite directions. The mounting plate supports are slidably connected to the base and reciprocate in the direction perpendicular to the front axle of the frame.

[0019] The position of the mounting plate is also located according to the corresponding dimensions to position the mounting plate support, and then the mounting plate is installed on the mounting plate support, and the internal structure is installed on the mounting plate, so that this tooling structure can be applicable to different frame structures. When welding the frame, the mounting plate is installed before installing the frame beam, and when installing the frame beam, the mounting plate is welded to the frame beam.

[0020] As an optimization option, in order to improve the strength of the frame, it further includes rib plate supports which are symmetrically arranged along the seat ring support. The rib plate supports are slidably connected to the base and reciprocate in a direction perpendicular to the front axle of the frame.

[0021] The rib plate supports are symmetrically arranged along the seat ring support. The rib plate supports are positioned according to the rib plate positions, and the rib plates are installed on the rib plate supports. When welding the frame, the rib plates are installed before installing the frame beam, and when installing the frame beam, the rib plates are welded to the frame beam to improve the strength of the frame.

[0022] As an optimization option, in order to realize the movement and positioning of the seat ring support, the mounting plate support and the rib plate support, moving devices are respectively arranged between the seat ring support, the mounting plate support, the rib plate support and the base. The moving devices include slide rails and limit holes respectively corresponding to the slide rails and the bottoms of the seat ring support, the mounting plate support and the rib plate support. The seat ring support, the mounting plate support and the rib plate support are respectively slidably connected to the base through the slide rails and are detachably connected to the slide rails through the limit holes after the movement is completed.

[0023] As an optimization option, in order to ensure the levelness of the frame seat ring, a level detection part is further arranged on the seat ring support. The level detection part is rotatably connected to the seat ring support, and the bottoms of both ends of the level detection part are in contact with the upper end surface of the frame seat ring.

[0024] When detecting the levelness of the frame seat ring, any detection point is selected, and the level detection part is rotated to detect the distance difference between the bottom of the level detection part at the detection point and the upper end surface of the frame seat ring. If the distance differences are the same, it means that the frame seat ring is in a horizontal state; if the distance differences are different, it means that the frame seat ring is in a non-horizontal state and needs to be leveled again, further improving the accuracy of the whole vehicle.

[0025] As an optimization option, in order to ensure the accuracy during the welding of the frame beam, it further includes a controller and hydraulic clamping devices arranged on both sides of the frame. At least two groups of the hydraulic clamping devices are symmetrically arranged, and the controller controls the hydraulic clamping devices to be closely attached to the outer surface of the frame beam.

[0026] Before welding the frame beam, the outer surface of the frame beam is closely attached by the hydraulic clamping devices to prevent a gap between the frame beam and the front axle, which affects the dimensional accuracy of the whole vehicle.

[0027] Beneficial effects: The utility model pre-dimensionally positions the welding of the overall vehicle frame through the front axle reference part on the front axle support, the seat ring reference part on the seat ring support, and the rear axle positioning part on the rear axle support, improving the dimensional accuracy of the vehicle frame during welding. By adjusting the position of the seat ring support, the tooling can be adapted to different vehicle models. Based on the rear axle support in the length of the vehicle frame, the front axle of the vehicle frame can be installed by selecting the front axle support at different positions, making it applicable to vehicle frames of different lengths. The front axle holes of the vehicle frame, the rear axle holes of the vehicle frame, and the turntable seat ring holes are machined before welding, eliminating the need for machining after welding, thus reducing the manufacturing cost and time. The front axle size is accurately positioned by three axes; the levelness of the seat ring is ensured by the horizontal detection part; the welding accuracy of the vehicle frame beam is ensured by the hydraulic clamping device, overall improving the overall accuracy of the vehicle frame, reducing the machining time, and improving the manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0029] Figure 1 It is the overall structure diagram of the vehicle frame tooling of the present utility model;

[0030] Figure 2 It is the top view of the present utility model;

[0031] Figure 3 It is the structure diagram of the tooling of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0034] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] As Figures 1-3 shown, an arm vehicle frame splicing point tooling includes a front axle support 2, a seat ring support 3, and a rear axle support 4 that are coaxially arranged on a base 1 in sequence. The front axle support 2 and the rear axle support 4 are respectively fixedly installed on the base 1. A front axle reference portion 21 is provided on the front axle support 2, and the vehicle frame front axle is installed with the front axle support 2 through the front axle reference portion 21. The seat ring support 3 is slidably connected to the base 1 and reciprocates in a direction perpendicular to the vehicle frame front axle. A seat ring reference portion 31 is provided on the seat ring support 3, and the vehicle frame seat ring is installed with the seat ring support 3 through the seat ring reference portion 31. A rear axle positioning portion 41 is provided on the rear axle support 4, and the vehicle frame rear axle is installed with the rear axle support 4 through the rear axle positioning portion 41. At least three groups of the front axle supports 2 are arranged in a direction perpendicular to the vehicle frame front axle.

[0036] Through the front axle reference portion 21 on the front axle support 2, the seat ring reference portion 31 on the seat ring support 3, and the rear axle positioning portion 41 on the rear axle support 4, the pre - dimensional positioning of the welding of the overall vehicle frame is carried out, improving the accuracy of the vehicle frame dimensions during welding. By adjusting the position of the seat ring support 3, this tooling can be adapted to different vehicle models. Taking the rear axle support 4 as the reference in the vehicle frame length, by selecting the front axle supports 2 at different positions to install the vehicle frame front axle, it can be applicable to vehicle frames of different lengths;

[0037] Before welding, first select the front axle support 2 with the corresponding size according to the structural dimensions of the vehicle frame, with the rear axle support 4 as the reference in terms of length. The front axle supports 2 can be used in combination. Then move the seat ring support 3 to the position corresponding to the vehicle frame seat ring and fix it. After all the positioning is completed, install the vehicle frame front axle and rear axle in sequence. The vehicle frame front axle is positioned and installed through the front axle reference portion 21, and the vehicle frame rear axle is positioned and installed through the rear axle positioning portion 41. Then install the vehicle frame beams on both sides in sequence, and finally install the vehicle frame seat ring according to the seat ring reference portion 31 to complete the vehicle frame splicing point tooling. Among them, the vehicle frame front axle holes, vehicle frame rear axle holes, and turntable seat ring holes have been machined before welding, eliminating the need for machining after welding, thus reducing the manufacturing cost and time.

[0038] In order to achieve precise positioning of the height dimension of the front axle of the vehicle frame, the front axle reference part 21 includes a reference groove 211 that penetrates through the front axle support 2 along a direction perpendicular to the front axle of the vehicle frame, and a reference shaft 212 installed on the reference groove 211. The front axle of the vehicle frame is positioned and installed through the cooperation of the reference shaft 212 and the reference groove 211.

[0039] The front axle of the vehicle frame is provided with a hole for the reference shaft 212 to pass through. After passing the reference shaft 212 through the front axle of the vehicle frame, it is installed in the reference groove 211 to complete the precise positioning of the front axle of the vehicle frame in terms of height.

[0040] In order to provide a supporting force to the front axle of the vehicle frame to prevent it from shaking and further improve the installation accuracy of the reference shaft 212, the front axle support 2 further includes support parts 22 symmetrically arranged along the reference groove 211. The support parts 22 are higher than the reference groove 211. The front axle of the vehicle frame is provided with support shafts 23 corresponding to the support parts 22 respectively, and equidistant gaps are respectively arranged between the support shafts 23 and the support parts 22 in the vertical direction.

[0041] The front axle of the vehicle frame is also provided with openings corresponding to the support parts 22. After passing the support shafts 23 through the openings respectively, due to the equidistant gaps arranged between the support parts 22 and the support shafts 23, these equidistant gaps serve as adjustment margins. During installation, the front axle of the vehicle frame will tilt to any side, that is, the outer circumferential surface of any one support shaft 23 contacts the top of any one support part 22, and there is a gap between the other support shaft 23 and the other support part 22, so as to ensure the accurate positioning of the reference shaft 212. If no gap is set, it will cause the reference shaft 212 to be suspended, thereby reducing the accuracy of the overall vehicle frame size. The equidistant gap between the support part 22 and the support shaft 23 is 0.5 mm. After the front axle of the vehicle frame tilts to any side, the height difference between the two sides does not exceed 1 mm. On the basis of not affecting the product performance, the accuracy of the overall vehicle size is improved. At the same time, after the vehicle frame beam is welded, the front axle of the vehicle frame is completely fixed and will no longer shake.

[0042] In order to position the vehicle frame seat ring, the seat ring reference part 31 is provided with positioning holes 311 corresponding to the vehicle frame seat ring, and the seat ring reference part 31 is positioned and installed with the vehicle frame seat ring through the positioning holes 311.

[0043] The vehicle frame seat ring is provided with holes corresponding to the seat ring reference part 31. After aligning the two holes, they are fixed by a pin shaft, and then the vehicle frame seat ring is welded to the vehicle frame beam to complete the installation and positioning of the vehicle frame seat ring.

[0044] In order to achieve the positioning and installation of the rear axle of the vehicle frame, the rear axle positioning part 41 is a stepped wheel, and the rear axle of the vehicle frame is positioned and installed through the stepped wheel and the rear axle support 4.

[0045] There are holes for installing variable-diameter wheels on the rear axle of the vehicle frame. Select a variable-diameter wheel of the corresponding size according to the designed hole size, and position and install the variable-diameter wheel with the rear axle support 4, thereby ensuring the accuracy of the positioning of the rear axle of the vehicle frame.

[0046] To realize the installation of the internal structure of the vehicle frame, it also includes a mounting plate support 5. The mounting plate supports 5 are respectively arranged on both sides of the seat ring support 3 and are arranged in opposite directions respectively. The mounting plate support 5 is slidably connected to the base 1 and reciprocates along the direction perpendicular to the front axle of the vehicle frame.

[0047] The position of the mounting plate is also positioned and installed according to the corresponding dimensions of the mounting plate support 5. Then, the mounting plate is installed on the mounting plate support 5, and the internal structure is installed on the mounting plate, so that the structure of this tooling can be applied to different vehicle frame structures. The internal structure in this utility model is a valve group. Therefore, in order to prevent water accumulation, the mounting plate is inclined. When welding the vehicle frame, the mounting plate is installed before installing the vehicle frame beam. When installing the vehicle frame beam, the mounting plate is welded to the vehicle frame beam.

[0048] To improve the strength of the vehicle frame, it also includes a rib plate support 6. The rib plate supports 6 are symmetrically arranged along the seat ring support 3. The rib plate support 6 is slidably connected to the base 1 and reciprocates along the direction perpendicular to the front axle of the vehicle frame.

[0049] The rib plate supports 6 are symmetrically arranged along the seat ring support 3. The position of the rib plate support 6 is positioned according to the position of the rib plate, and the rib plate is installed on the rib plate support 6. When welding the vehicle frame, the rib plate is installed before installing the vehicle frame beam. When installing the vehicle frame beam, the rib plate is welded to the vehicle frame beam to improve the strength of the vehicle frame.

[0050] To realize the movement and positioning of the seat ring support 3, the mounting plate support 5, and the rib plate support 6, a moving device 7 is provided between the seat ring support 3, the mounting plate support 5, the rib plate support 6 and the base 1. The moving device 7 includes a slide rail 71 and limit holes 72 respectively corresponding to be arranged on the slide rail and at the bottoms of the seat ring support 3, the mounting plate support 5, and the rib plate support 6. The seat ring support 3, the mounting plate support 5, and the rib plate support 6 are respectively slidably connected to the base 1 through the slide rail 71 and are detachably connected to the slide rail 71 through the limit holes 72 after the movement is completed.

[0051] To ensure the levelness of the seat ring of the vehicle frame, a level detection part 8 is also provided on the seat ring support 3. The level detection part 8 is rotatably connected to the seat ring support 3, and the bottoms of both ends of the level detection part 8 are in contact with the upper end surface of the vehicle frame seat ring.

[0052] When detecting the levelness of the frame seat ring, select any detection point, rotate the horizontal detection part 8, and detect the distance difference between the bottom of the horizontal detection part 8 at the detection point and the upper end face of the frame seat ring. If the distance differences are the same, it indicates that the frame seat ring is in a horizontal state. If the distance differences are different, it indicates that the frame seat ring is in a non-horizontal state and needs to be leveled again, further improving the accuracy of the whole vehicle.

[0053] To ensure the accuracy during the welding of the frame beam, it further includes a controller and hydraulic clamping devices 9 arranged on both sides of the frame. At least two sets of the hydraulic clamping devices 9 are symmetrically arranged, and the controller controls the hydraulic clamping devices 9 to be closely attached to the outer surface of the frame beam.

[0054] Before welding the frame beam, the hydraulic clamping devices 9 are closely attached to the outer surface of the frame beam to prevent gaps between the frame beam and the front axle, which may affect the dimensional accuracy of the whole vehicle.

[0055] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A boom truck frame assembly tool, characterized in that: The invention comprises a front axle support (2), a seat ring support (3), and a rear axle support (4) which are coaxially arranged on a base (1) in sequence, wherein the front axle support (2) and the rear axle support (4) are respectively fixedly mounted on the base (1), the front axle support (2) is provided with a front axle reference portion (21), and the front axle of the frame is mounted on the front axle support (2) via the front axle reference portion (21), the seat ring support (3) is slidably connected to the base (1), and reciprocates in a direction perpendicular to the front axle of the frame, the seat ring support (3) is provided with a seat ring reference portion (31), and the seat ring of the frame is mounted on the seat ring support (3) via the seat ring reference portion (31), the rear axle support (4) is provided with a rear axle positioning portion (41), and the rear axle of the frame is mounted on the rear axle support (4) via the rear axle positioning portion (41), and at least three groups of the front axle supports (2) are arranged in a direction perpendicular to the front axle of the frame.

2. The arm truck frame assembly tool according to claim 1, characterized in that: The front axle reference portion (21) comprises a reference groove (211) arranged perpendicular to the direction of the front axle of the vehicle frame and penetrating the front axle support (2), and a reference shaft (212) mounted on the reference groove (211); the front axle of the vehicle frame is positioned and mounted via the reference shaft (212) and the reference groove (211).

3. The arm truck frame assembly tool according to claim 2, characterized in that: The front axle support (2) further comprises a support portion (22) symmetrically arranged along the reference groove (211), the support portion (22) being higher than the reference groove (211), and a support shaft (23) corresponding to the support portion (22) is arranged on the front axle of the vehicle frame, and equidistant gaps are respectively arranged between the support shaft (23) and the support portion (22) in the vertical direction.

4. The arm truck frame assembly tool according to claim 1, characterized in that: The seat ring reference portion (31) is provided with a positioning hole (311) corresponding to the frame seat ring, and the seat ring reference portion (31) is positioned and installed with the frame seat ring through the positioning hole (311).

5. The arm truck frame assembly tool according to claim 1, characterized in that: The rear axle positioning portion (41) is a variable diameter wheel, and the rear axle of the frame is positioned and installed with the rear axle support (4) via the variable diameter wheel.

6. The arm truck frame assembly tool according to claim 1, characterized in that: It also includes a mounting plate support (5), the mounting plate support (5) being respectively arranged on both sides of the seat ring support (3) and respectively arranged in opposite directions, the mounting plate support (5) being slidably connected to the base (1) and reciprocating in a direction perpendicular to the front axle of the frame.

7. The arm truck frame assembly tool according to claim 6, characterized in that: It also comprises a rib support (6), wherein the rib support (6) is symmetrically arranged along the seat ring support (3), the rib support (6) is slidably connected to the base (1), and reciprocates in a direction perpendicular to the front axle of the frame.

8. The arm truck frame assembly tool according to claim 7, characterized in that: A moving device (7) is provided between the seat ring support (3), the mounting plate support (5), the rib plate support (6) and the base (1). The moving device (7) comprises a slide rail (71) and position limiting holes (72) respectively provided on the slide rail and the bottom of the seat ring support (3), the mounting plate support (5) and the rib plate support (6). The seat ring support (3), the mounting plate support (5) and the rib plate support (6) are respectively connected to the base (1) in a sliding manner via the slide rail (71) and are detachably connected to the slide rail (71) via the position limiting holes (72) after the movement is completed.

9. The arm truck frame assembly tool according to claim 1, characterized in that: The seat ring support (3) is also provided with a horizontal detection part (8), the horizontal detection part (8) is rotatably connected to the seat ring support (3), and the bottoms of both ends of the horizontal detection part (8) are in contact with the upper end surface of the frame seat ring.

10. The arm truck frame assembly tool according to claim 1, characterized in that: It also includes a controller and hydraulic clamping devices (9) arranged on both sides of the frame, wherein at least two groups of the hydraulic clamping devices (9) are symmetrically arranged, and the controller controls the hydraulic clamping devices (9) to be pressed against the outer surface of the frame beam.

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