Special vehicle torsion bar support welding positioning device

Abstract

The utility model provides a welding and positioning device for a torsion bar support of a special vehicle. The welding and positioning device comprises a universal box body assembly, a special bottom plate and a special positioning plate. A main body of the device adopts a universal box body design, a special bottom plate is connected with a porous platform, and a special positioning plate is used for fixing a torsion bar bracket, so that the XYZ three-dimensional accurate positioning design of the torsion bar bracket and a power chamber is realized, and the inclination requirements in the XY direction are controlled at the same time. The special bottom plate is connected with the multi-hole platform through the quick locking pins, various vehicle bodies can be compatible by changing the size, and the universality of the device is improved. And the special positioning plate adopts a bidirectional inclination design, so that the spatial form and position requirements of the torsion bar bracket can be met. The universal box body assembly is matched with a rack shaft through a gear, so that the rapid positioning requirement in the welding process is met; precise positioning is achieved through cooperation of the sliding sleeve and the sliding key, and precision control and working efficiency under the complex working condition of welding can be improved by designing the sliding key ruler and the check pin.

Description

Technical Field

[0001] This utility model belongs to the field of welding positioning technology, specifically relating to a welding positioning device for a torsion bar bracket of a special vehicle. Background Technology

[0002] Torsion bar brackets are crucial components of special vehicle bodies, serving as mounting bases for torsion shafts and playing a vital role in the load-bearing capacity of the motion system. Structurally, the torsion bar brackets are symmetrically distributed 180° to the left and right sides of the vehicle body. During the body assembly welding stage, they are welded together with the base plate and side plates. Therefore, they must simultaneously meet the XYZ three-dimensional positioning requirements of the power compartment and their own XY tilt control requirements. Due to the unique design of the torsion bar brackets, spatial positioning is employed during welding. To avoid cumulative errors from multiple positioning positions, ensure compliance with three-dimensional spatial dimensional requirements and their own bidirectional tilt requirements, and integrate with a novel multi-hole platform for rapid clamping and compatibility with various vehicle bodies, a welding positioning device capable of rapid and precise positioning needs to be designed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] This utility model proposes a welding and positioning device for a torsion bar bracket of a special vehicle to solve the technical problems of low positioning accuracy, high adjustment difficulty, and incompatibility with various vehicle bodies of the torsion bar bracket, and realizes rapid adjustment and precise positioning of the torsion bar bracket.

[0005] (II) Technical Solution

[0006] To address the aforementioned technical problems, this utility model proposes a welding positioning device for a torsion bar bracket of a special vehicle. This welding positioning device includes a universal housing assembly, a dedicated base plate, and a dedicated positioning plate; wherein...

[0007] The universal housing assembly includes a housing, gears, a copper sleeve, a rack shaft, and a sliding key. The housing includes a rack shaft mounting section at the top and a gear mounting section at the bottom, which are internally connected. A gear is installed in the gear mounting section. The rack shaft mounting section is a cylindrical structure extending from front to back. A copper sleeve is installed at the front opening of the cylindrical section. The rack shaft is inserted into the rack shaft mounting section through the center hole of the copper sleeve, and the front end of the rack shaft is fixedly connected to a dedicated positioning plate. A sliding key is installed at the top of the rack shaft, and guide teeth are provided at the bottom of the rack shaft, meshing with the gear. By rotating the gear, the rack shaft can move back and forth within the rack shaft mounting section, and the precise positioning of the torsion bar bracket is achieved through the cooperation of the copper sleeve and the sliding key. A base plate connecting plate is installed at the bottom of the gear mounting section, and the base plate connecting plate is fixedly connected to a dedicated base plate by bolts. The dedicated base plate is fixedly connected to a multi-hole platform by a quick-locking pin, thus achieving a fixed connection between the universal housing assembly and the multi-hole platform.

[0008] The front end of the special positioning plate is equipped with a torsion bar bracket positioning rod and a clamping plate. The torsion bar bracket is positioned by the torsion bar bracket positioning rod and is pressed against the front end face of the special positioning plate by the clamping plate.

[0009] Furthermore, a rack and pinion shaft is installed at the rear end opening of the cylinder to house the housing.

[0010] Furthermore, the front end of the rack shaft is fixedly connected to a special positioning plate by screws.

[0011] Furthermore, an eccentric locking component is provided between the top of the rack shaft and the top inner wall of the housing to lock the rack shaft.

[0012] Furthermore, the gears are rotated by a rotating device located outside the housing.

[0013] Furthermore, the surface of the slide key is engraved with scales.

[0014] Furthermore, a vertically arranged rotating fixing pin is installed on the top of the housing. The rotating fixing pin can be inserted into the fixing hole of the scale. When the gear is rotated, the rotating fixing pin is positioned by impacting the front face of the housing, eliminating the clearance error when the gear meshes.

[0015] Furthermore, the dedicated positioning plate adopts a two-way slope design, with a vertical slope on one side and a horizontal slope on the other side, providing XY two-way slope for the torsion bar bracket.

[0016] (III) Beneficial Effects

[0017] This utility model proposes a welding positioning device for a torsion bar bracket in special vehicles, comprising a universal housing assembly, a dedicated base plate, and a dedicated positioning plate. The main body of the device adopts a universal housing design, connected to a multi-hole platform via the dedicated base plate. The dedicated positioning plate fixes the torsion bar bracket, achieving precise XYZ three-dimensional positioning of the torsion bar bracket and the power compartment, while simultaneously controlling its XY direction inclination requirements. The dedicated base plate is connected to the multi-hole platform via a quick-locking pin, and its size can be changed to accommodate various vehicle bodies, improving the device's versatility. The dedicated positioning plate features a bidirectional inclination design to meet the spatial positional requirements of the torsion bar bracket. The universal housing assembly uses gears and rack shafts to meet the rapid positioning requirements during welding; precise positioning is achieved through sliding sleeves and sliding keys; and the design of sliding key scales and check pins improves accuracy control and work efficiency under complex welding conditions.

[0018] The welding positioning device provided by this utility model can realize the rapid clamping and precise positioning of torsion bar brackets, meet the multi-dimensional size requirements of space, and is suitable for rapid and precise operation in complex welding conditions, ensuring the welding quality of torsion bar brackets and improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the special vehicle torsion bar bracket welding positioning device of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the general-purpose housing assembly in this utility model. Detailed Implementation

[0021] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Positioning and welding torsion bar brackets for special vehicles presents significant challenges in three-dimensional spatial positioning. To achieve rapid and precise positioning, while also considering high strength and versatility across different vehicle bodies, thereby improving welding efficiency and product quality, this embodiment proposes a welding positioning device for torsion bar brackets for special vehicles. Its structure is as follows: Figure 1 As shown, it mainly includes a general-purpose housing assembly 1, a special base plate 2, and a special positioning plate 3.

[0023] like Figure 2 As shown, the general-purpose housing assembly 1 specifically includes a housing 1-1, a gear 1-2, a copper sleeve 1-3, a rack shaft 1-4, and a sliding key 1-5. The housing 1-1 includes a rack shaft mounting section at the top and a gear mounting section at the bottom, which are internally connected. The gear 1-2 is installed in the gear mounting section. The rack shaft mounting section is a cylindrical structure that extends from front to back. A copper sleeve 1-3 is installed at the front opening of the cylindrical body, and a rack shaft housing is installed at the rear opening of the cylindrical body using screws. The rack shaft 1-4 is inserted into the rack shaft mounting section through the center hole of the copper sleeve 1-3, and the front end of the rack shaft 1-4 is fixedly connected to a special positioning plate 3 using screws.

[0024] A sliding key 1-5 is mounted on the top of the rack shaft 1-4, and a guide tooth is provided at the bottom of the rack shaft 1-4, which meshes with the gear 1-2. An eccentric locking component is provided between the top of the rack shaft 1-4 and the top inner wall of the housing 1-1. By rotating the gear 1-2 through a rotating device located outside the housing 1-1, the rack shaft 1-4 can be driven to move back and forth rapidly within the rack shaft mounting part. The precise positioning of the torsion bar bracket is achieved by the cooperation of the copper sleeve 1-3 and the sliding key 1-5, while the rack shaft 1-4 is locked by the locking component.

[0025] The surface of slide key 1-5 is engraved with a scale, enabling rapid and accurate positioning. A vertically arranged rotating fixing pin is installed on the top of housing 1-1. The rotating fixing pin can be inserted into the fixing hole of the scale. When gear 1-2 is rotated, the rotating fixing pin is positioned by impacting the front end face of housing 1-1, which can eliminate the clearance error during gear meshing.

[0026] A base plate connecting plate is installed at the bottom of the gear mounting part. The base plate connecting plate is fixedly connected to the special base plate 2 by bolts. The special base plate 2 is fixedly connected to the multi-hole platform by quick-locking pin 4, so as to realize the fixed connection between the general housing assembly 1 and the multi-hole platform.

[0027] The front end of the dedicated positioning plate 3 is equipped with a torsion bar bracket positioning rod and a clamping plate. The torsion bar bracket is positioned by the torsion bar bracket positioning rod and pressed against the front end face of the dedicated positioning plate 3 by the clamping plate, preventing displacement of the torsion bar bracket due to excessive stress during welding. The dedicated positioning plate 3 adopts a two-way slope design, with a vertical slope on one side and a horizontal slope on the other side, which can provide XY two-way slope for the torsion bar bracket and meet the spatial position requirements of the torsion bar bracket.

[0028] The welding positioning device of this utility model adopts a universal box assembly 1. By changing the size of the special base plate 2 and the special positioning plate 3, it can be compatible with the positioning requirements of torsion bar brackets of various vehicle bodies.

[0029] The process steps for welding torsion bar brackets using the special vehicle torsion bar bracket welding positioning device of this utility model are as follows:

[0030] S1. Select a special base plate 2 and a special positioning plate 3 according to the dimensions of the vehicle body and platform.

[0031] S2. Verify the absolute position dimensions of the welding positioning device.

[0032] S3. Install and position the vehicle body on the platform, and install the torsion bar bracket.

[0033] S4. Insert the rotary fixing pin, operate the welding positioning device, and lock the rack shaft 1-4 through the eccentric locking component to quickly and accurately position the torsion bar bracket.

[0034] S5. Position welding of the torsion bar bracket.

[0035] S6. Remove the bolts and reset the welding positioning device.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A special vehicle torsion bar support welding positioning device, characterized in that, The welding positioning device comprises a general box assembly, a special base plate and a special positioning plate. The general box assembly comprises a box, a gear, a copper sleeve, a rack shaft and a sliding key. The top of the rack shaft is provided with the sliding key, and the bottom of the rack shaft is provided with a guide tooth which is engaged with the gear.

2. The special vehicle torsion bar hanger welding fixture of claim 1 wherein, The bottom of the gear mounting portion is provided with a base plate connecting plate which is fixedly connected with the special base plate through bolts.

3. The special vehicle torsion bar hanger welding fixture of claim 1 wherein, The front end of the rack shaft is fixedly connected with the special positioning plate through a screw.

4. The special vehicle torsion bar hanger welding fixture of claim 1 wherein, The top of the rack shaft and the inner wall of the top of the box are provided with a locking part of an eccentric structure.

5. The special vehicle torsion bar hanger welding fixture of claim 1 wherein, The gear is rotated through a rotating device located outside the box.

6. The special vehicle torsion bar hanger welding fixture of claim 1 wherein, The surface of the sliding key is engraved with a scale.

7. The special vehicle torsion bar hanger welding fixture of claim 6 wherein, The top of the box is provided with a rotary fixing pin which is vertically arranged and can be inserted into the fixed hole of the scale.

8. The specialty vehicle torsion bar hanger welding fixture of claim 1, wherein, The special positioning plate is designed with a two-way slope, one side of which has a vertical slope and the other side has a horizontal slope, thereby providing the XY two-way slope for the torsion bar support.

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