Positioning device for welding processing of boxcar

Abstract

The invention relates to the technical field of mounting and positioning devices, and provides a positioning device for welding of a boxcar, which is used for positioning a to-be-processed boxcar plate and comprises a frame main body, a lifting part arranged on the top surface of the frame main body and arranged on the bottom surface of the frame main body; the middle of the first clamping plate is hinged to the frame body, one end of the first clamping plate abuts against the lifting piece, the other end of the first clamping plate is located on one side of the top of the frame body, and the first clamping plate is used for pressing and positioning one side edge of the carriage plate; one end of the second clamping plate is hinged to the lifting piece, the other end of the second clamping plate is located on the top of the frame body, the middle of the second clamping plate is arranged on the side wall of the frame body in a sliding mode, and the second clamping plate is used for pressing and positioning the other side edge of the carriage plate. By means of the technical scheme, the problems that in the prior art, a positioning device for welding machining is inaccurate in positioning and poor in universality are solved.

Description

Technical Field

[0001] The invention relates to the technical field of installation positioning devices, and in particular to a positioning device for welding processing of a truck compartment. Background Art

[0002] In the manufacturing process of truck compartments, welding is an extremely critical link, and its quality directly affects the overall strength, sealing and service life of the compartment. Before welding, accurate positioning of the compartment panels is an important prerequisite for ensuring welding quality.

[0003] With the continuous improvement of the automation and intelligence level of the manufacturing industry, the market has put forward higher requirements for the quality and efficiency of truck body welding processing. Although some existing simple positioning fixtures can assist in positioning to a certain extent, they generally have the problem of poor versatility and are difficult to adapt to the positioning needs of car body panels of different specifications and models. There is still a lot of room for improvement in positioning accuracy and stability. In addition, although some complex automated positioning equipment has high accuracy, it is often complex in structure and high in cost, which limits its wide application in the industry.

[0004] Therefore, a positioning device for truck compartment welding processing which can ensure high-precision positioning, has good versatility and relatively reasonable cost is needed to solve the above problems. Summary of the invention

[0005] The present invention provides a positioning device for welding processing of a truck compartment, which solves the problems of inaccurate positioning and poor versatility of the positioning device for welding processing in the related art.

[0006] The technical solution of the present invention is as follows: A positioning device for welding a truck compartment, used for positioning a compartment plate to be processed, comprising: The frame body, the carriage plate is placed on the top surface of the frame body A lifting member is arranged on the bottom surface of the frame body; A first clamping plate, wherein the middle portion of the first clamping plate is hinged to the frame body, one end of the first clamping plate abuts against the lifting member, and the other end of the first clamping plate is located on one side of the top of the frame body, and the first clamping plate is used to press and position one side of the carriage plate; A second clamping plate, one end of the second clamping plate is hinged on the lifting member, the other end of the second clamping plate is located at the top of the frame body, the middle part of the second clamping plate is slidably set on the side wall of the frame body, and the second clamping plate is used to press and position the other side edge of the car body plate.

[0007] Optionally, also include: There are several support seats, which are respectively located on both sides of the frame body. The support seats have a rotating connection end, and the side end of the frame body is arranged on the rotating connection end. The rotating connection end is used to drive the deflection angle of the frame body.

[0008] Optionally, the framework body includes: The installation frame is rectangular; The bottom plate is arranged at the bottom of the installation frame, and the lifting member is arranged on the bottom plate.

[0009] Optionally, also include: A carrying plate is arranged on the movable end of the lifting member, and the first clamping plate and the second clamping plate are both connected to the lifting member through the carrying plate.

[0010] Optionally, the first clamping plate is L-shaped, and the inflection point of the first clamping plate is hinged to the bottom plate; further comprising: An abutment rod, disposed on one end of the first clamping plate, wherein the first clamping plate is slidably abutted against the bearing plate through the abutment rod; The first extrusion rod is arranged on the other end of the first clamping plate, and the first extrusion rod is located on one side of the top of the installation frame.

[0011] Optionally, also include: A spring, one end of which is in contact with the bottom surface of the installation frame and the other end of which is in contact with the top surface of the first clamping plate, is used to provide the first clamping plate with a force to press the carriage plate.

[0012] Optionally, the second clamping plate is C-shaped, and a strip groove is provided at a bending portion of the second clamping plate, and the strip groove is bent, and further comprises: A round rod is arranged at the bottom of the installation frame, and the round rod penetrates and is slidably arranged in the strip groove. After the lifting member drives the second clamping plate to move upward, the round rod guides the strip groove to deflect.

[0013] Optionally, also include: A second extrusion rod is arranged at one end of the second clamping plate, and the second extrusion rod is located at the top of the installation frame, and the second extrusion rod is used to press the top and side of the carriage plate.

[0014] Optionally, both the first extrusion rod and the second extrusion rod have a friction surface.

[0015] Optionally, also include: There are several connecting plates, each of which is provided with one connecting plate, and the installation frame is provided on the rotating connecting end through the connecting plate.

[0016] The working principle and beneficial effects of the present invention are: In the present invention, the car body panel to be processed is first placed on the top surface of the frame body. Then the lifting member is started. When the lifting member rises, the lifting member pushes one end of the first clamping plate to move upward. Since the middle part of the first clamping plate is hinged on the frame body, the other end of the first clamping plate will deflect and open around the hinge point. When the lifting member moves down and resets, the first clamping plate presses one side of the car body panel. At the same time, the rise of the lifting member will also drive one end of the second clamping plate to move upward, because the middle part of the second clamping plate is slidably set on the side wall of the frame body. During the upward movement, the other end of the second clamping plate will move toward the outside of the top of the frame body. When the lifting member moves down, the second clamping plate presses the other side of the car body panel to achieve clamping of both sides of the car body panel. A plurality of first clamping plates and second clamping plates are arranged in the length direction of the frame body. When positioning and clamping are required, all lifting parts move synchronously. Therefore, it is only necessary to place the car body plate on the frame body, and then drive the first clamping plate and the second clamping plate to move through the lifting parts to position and clamp the car body plate. This is not only simple to operate, but also accurate in positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of the main frame of the present invention from the first perspective; Figure 2 This is a schematic diagram of the structure of the framework body of the present invention from a second viewing angle; Figure 3 for Figure 2 A partial enlarged view of the middle part; Figure 4 This is the main front view of the framework of the present invention; Figure 5 for Figure 4 A partial enlarged view of the middle AA; Figure 6 It is a schematic diagram of the position relationship between the welding device and the frame body.

[0019] In the figure: 1. frame body, 101. mounting frame, 102. bottom plate, 2. lifting member, 3. first clamping plate, 4. second clamping plate, 401. strip groove, 5. support seat, 6. rotating connection end, 7. bearing plate, 8. abutting rod, 9. spring, 10. first extrusion rod, 11. second extrusion rod, 12. round rod, 13. connecting plate. DETAILED DESCRIPTION In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0020] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] Reference Figure 1 to Figure 6 , which is an embodiment of the present invention, proposes a positioning device for welding processing of a truck compartment, which is used for positioning a compartment panel to be processed, and includes a frame body 1, and the compartment panel is placed on the top surface of the frame body 1; a lifting member 2 is arranged on the bottom surface of the frame body 1; the middle part of a first clamping plate 3 is hinged on the frame body 1, one end of the first clamping plate 3 abuts on the lifting member 2, and the other end of the first clamping plate 3 is located on one side of the top of the frame body 1, and the first clamping plate 3 is used to press and position one side of the compartment panel; one end of a second clamping plate 4 is hinged on the lifting member 2, and the other end of the second clamping plate 4 is located on the top of the frame body 1, and the middle part of the second clamping plate 4 is slidably arranged on the side wall of the frame body 1, and the second clamping plate 4 is used to press and position the other side of the compartment panel.

[0024] In the above scheme, the frame body 1 can be welded with metal square tubes or long strips, and the top surface is flat and smooth, which is convenient for the stable placement of the car body. The lifting member 2 can be a hydraulic jack or an electric lifting rod. When working, first place the car body to be processed on the top surface of the frame body 1. Then start the lifting member 2. When the lifting member 2 rises, its top pushes one end of the first clamping plate 3 to move up. Since the middle part of the first clamping plate 3 is hinged to the frame body 1, the other end of the first clamping plate 3 will rotate downward around the hinge point, thereby pressing one side of the car body. At the same time, the rise of the lifting member 2 will also drive one end of the second clamping plate 4 to move up, because the middle part of the second clamping plate 4 is slidably set on the side wall of the frame body 1. During the rising process, the other end of the second clamping plate 4 will move to the middle of the top of the frame body 1, and then press the other side of the car body, so as to achieve the clamping of both sides of the car body. It should be noted that a plurality of first clamping plates 3 and second clamping plates 4 are arranged in the length direction of the frame body 1. When positioning and clamping are required, all the lifting parts 2 act synchronously, so it is only necessary to place the car body plate on the frame body 1, and then drive the first clamping plates 3 and the second clamping plates 4 to move through the lifting parts 2 to position and clamp the car body plate.

[0025] Furthermore, it also includes a support seat 5, which has a plurality of support seats 5. The plurality of support seats 5 are respectively located on both sides of the frame body 1. The support seat 5 has a rotating connection end 6. The side end of the frame body 1 is arranged on the rotating connection end 6. The rotating connection end 6 is used to drive the deflection angle of the frame body 1.

[0026] In the above scheme, the support seat 5 has a stable base. The rotating connection end 6 adopts a high-precision slewing bearing, the inner ring of the slewing bearing is fixedly connected to the support seat 5, and the outer ring is fixedly connected to the connecting plate 13 at the side end of the frame body 1. Two support seats 5 can be provided, distributed at the two ends of the frame body 1.

[0027] The support base 5 provides stable support for the frame body 1, and the structure of the rotating connection end 6 can make the frame body 1 deflect within a certain range, increasing the flexibility of the device and facilitating the positioning of the carriage plate to meet different welding angle requirements. Moreover, during welding, it can also cooperate with the welding manipulator to perform actions.

[0028] Working process: When the deflection angle of the frame body 1 needs to be adjusted, the rotating connection end 6 is driven to rotate by the driving device installed in the support seat 5, and the rotational force is applied to the frame body 1, so that it rotates around the slewing bearing of the rotating connection end 6, thereby changing the angle of the car body plate on the frame body 1 to meet the special welding process or the car body plate splicing angle requirements.

[0029] Furthermore, the frame body 1 includes a mounting frame 101 , which is rectangular; a bottom plate 102 is disposed at the bottom of the mounting frame 101 , and the lifting member 2 is disposed on the bottom plate 102 .

[0030] In the above scheme, the mounting frame 101 constitutes the main space frame for placing the carriage plate, and its rectangular structure is conducive to the placement and positioning of the carriage plate. The bottom plate 102, on the one hand, enhances the overall strength of the frame body 1, and on the other hand, provides a stable installation foundation for the lifting member 2. When the entire positioning device is working, the mounting frame 101 carries the carriage plate, and the bottom plate 102 bears the force from the lifting member 2 and transfers the overall weight of the frame body 1 to the working platform, ensuring the stability of the entire device during operation.

[0031] Furthermore, it also includes: a bearing plate 7, which is arranged on the movable end of the lifting member 2, and the first clamping plate 3 and the second clamping plate 4 are both connected to the lifting member 2 through the bearing plate 7.

[0032] In the above scheme, the load-bearing plate 7 is made of steel plate in the shape of a rectangular strip, and its size is selected according to the connection requirements of the first clamping plate 3 and the second clamping plate 4. The load-bearing plate 7 is fixed to the movable end of the lifting member 2 by welding or bolting, and the first clamping plate 3 and the second clamping plate 4 are connected to the load-bearing plate 7 by corresponding hinges or connecting structures. The load-bearing plate 7 plays the role of connecting the lifting member 2 with the first clamping plate 3 and the second clamping plate 4, transmitting the power of the lifting member 2 to the two clamping plates simultaneously and evenly, and ensuring the stability and accuracy of the clamping plates during the lifting process.

[0033] Working process: When the lifting member 2 is working, its movable end drives the bearing plate 7 to move up and down, and the bearing plate 7 then drives the first clamping plate 3 to rotate around its hinge point, and at the same time drives one end of the second clamping plate 4 to move up and down and make the middle part slide along the side wall of the frame body 1, thereby realizing the clamping and positioning action of the car body plate.

[0034] Furthermore, the first clamping plate 3 is L-shaped, and the inflection point of the first clamping plate 3 is hinged to the bottom plate 102; it also includes an abutment rod 8, which is arranged on one end of the first clamping plate 3, and the first clamping plate 3 is slidably abutted against the supporting plate 7 through the abutment rod 8; the first extrusion rod 10 is arranged on the other end of the first clamping plate 3, and the first extrusion rod 10 is located on the top side of the installation frame 101.

[0035] In the above scheme, one end of the abutment rod 8 is welded to one end of the first clamping plate 3, and the other end is in contact with the side of the bearing plate 7. When the first clamping plate 3 moves, the abutment rod 8 can slide on the bearing plate 7. The first extrusion rod 10 is a metal rod wrapped with rubber. The rubber layer is used to increase the friction and cushioning when in contact with the car body plate. The metal rod is used to ensure sufficient clamping strength. One end of the metal rod is welded to the other end of the first clamping plate 3. It should be noted that in order to meet the positioning and clamping requirements of car body plates of different specifications, the first extrusion rod 10 can be adjusted at the end of the first clamping plate 3, such as adjusting the extension distance, or the first extrusion rod 10 can be tilted at the end of the first clamping plate 3.

[0036] The structure of the abutment rod 8 enables the first clamping plate 3 to stably rotate around the hinge point under the action of the lifting member 2, and limits its rotation range by sliding abutment with the bearing plate 7, thereby ensuring the accuracy of positioning. The rubber wrapping design of the first extrusion rod 10 can not only effectively press the car body panel, but also prevent damage to the surface of the car body panel.

[0037] Working process: when the lifting member 2 rises, the supporting plate 7 moves upward, and the abutment rod 8 slides in the groove or slide on the top surface of the supporting plate 7 (by setting the groove or slide, the spring 9 can be omitted between the first clamping plate 3 and the mounting frame 101, and the clamping of one side of the car body plate can be completed by the pulling force of the supporting plate 7), pushing the first clamping plate 3 to rotate around the hinge point, and the first extrusion rod 10 gradually approaches and presses one side of the car body plate, the rubber layer contacts the car body plate and generates friction, and the car body plate is firmly positioned on the frame body 1.

[0038] Furthermore, a spring 9 is included, one end of which abuts against the bottom surface of the installation frame 101, and the other end abuts against the top surface of the first clamping plate 3. The spring 9 is used to provide the first clamping plate 3 with a force to press the car body plate.

[0039] In the above scheme, the spring 9 is a high-strength stainless steel spring 9, one end of which is hung on the connecting ring on the bottom surface of the mounting frame 101 through a hook, and the other end is hung on the connecting ring on the top surface of the first clamping plate 3 through a hook. The arrangement of the spring 9 provides a pressing force for the first clamping plate 3, and even when the lifting member 2 is underpowered or has a slight displacement, the first clamping plate 3 can be ensured to stably press the carriage plate, thereby improving the reliability of positioning.

[0040] Working process: When the lifting member 2 pushes the first clamping plate 3 to open, the spring 9 is compressed. When the movable end of the lifting member 2 drops and resets, the spring 9 presses one end of the first clamping plate 3. At this time, the bearing plate 7 supports the abutting end. Therefore, the spring 9 will not return to its normal state. The spring 9 still has a moving pressure, which is the clamping force.

[0041] Furthermore, the second clamping plate 4 is C-shaped, and has a strip groove 401 at the bending part of the second clamping plate 4. The strip groove 401 is bent and also includes: a round rod 12, which is arranged at the bottom of the installation frame 101. The round rod 12 passes through and is slidably arranged in the strip groove 401. After the lifting member 2 drives the second clamping plate 4 to move upward, the round rod 12 guides the strip groove 401 to deflect.

[0042] In the above scheme, the round rod 12 is a stainless steel round rod 12, and its two ends are fixed to the two side walls of the bottom of the installation frame 101 by welding or threaded connection, and correspond to the position of the strip groove 401 of the second clamping plate 4. The bending angle of the strip groove 401 is designed according to the movement trajectory of the second clamping plate 4, and the groove width and depth are adapted according to the size of the round rod 12. The matching structure of the round rod 12 and the strip groove 401 limits the movement trajectory of the second clamping plate 4, so that the second clamping plate 4 can move along a predetermined path under the action of the lifting member 2, realize accurate pressing and positioning of the side of the car body plate, and can automatically adjust the angle during the lifting process to adapt to the positioning requirements of car body plates of different shapes.

[0043] Working process: when the lifting member 2 rises, one end of the second clamping plate 4 moves up with the supporting plate 7. Since the round rod 12 passes through the strip groove 401, during the rising process, the strip groove 401 slides along the round rod 12, forcing the other end of the second clamping plate 4 to move toward the outside of the top of the frame body 1 and to be in an open state. When the lifting member 2 descends and resets, the supporting plate 7 will pull one end of the second clamping plate 4 to move, and the second clamping plate 4 will have a certain angle of deflection. At this time, it is in a clamped state to better fit the shape of the car body plate for positioning.

[0044] Furthermore, it also includes a second extrusion rod 11, which is arranged at one end of the second clamping plate 4 and located at the top of the installation frame 101. The second extrusion rod 11 is used to press the top and side of the car body plate.

[0045] In the above scheme, the second extrusion rod 11 adopts a rubber and metal composite structure. The metal rod part ensures sufficient compression strength, and the rubber part is wrapped around one end of the metal rod to increase the friction and cushioning with the car body plate. It is fixed to one end of the second clamping plate 4 by welding or bolting, and the installation angle matches the angle between the top and side of the car body plate.

[0046] The second extrusion rod 11 can simultaneously press the top and sides of the car body panel. Its rubber part increases the friction and cushioning with the car body panel, and the metal rod part ensures sufficient pressing strength. This structural design improves the stability and reliability of positioning the car body panel.

[0047] Working process: When the second clamping plate 4 is pressed against the side of the car body panel by the spring 9, the rubber part of the second extrusion rod 11 first contacts the car body panel. As the second clamping plate 4 is pressed against the spring 9, the rubber is compressed, and the metal rod part gradually approaches and presses the car body panel. At the same time, due to its installation angle, it can effectively press against the top and sides of the car body panel to prevent displacement of the car body panel during welding.

[0048] Furthermore, both the first extrusion rod 10 and the second extrusion rod 11 have friction surfaces.

[0049] In the above scheme, the friction surface of the first extrusion rod 10 is made of rubber material, bonded to the surface of the metal extrusion block by a vulcanization process, and the surface has an anti-slip texture. The friction surface of the second extrusion rod 11 is made of polyurethane material, bonded to the surface of the metal extrusion block by glue, and the surface has an anti-slip structure. The friction surface design of the first extrusion rod 10 and the second extrusion rod 11 can effectively increase the friction between the car body plate, prevent the car body plate from sliding during positioning and welding, and ensure the welding quality. Different materials and anti-slip structures can be selected according to the material and surface characteristics of the car body plate to improve applicability.

[0050] Working process: When the first extrusion rod 10 and the second extrusion rod 11 press the car body panel respectively, their friction surfaces are in close contact with the surface of the car body panel, and the elastic deformation of the rubber or polyurethane material fills the tiny bumps on the surface of the car body panel. The anti-slip texture or anti-slip structure further increases the friction, so that the car body panel is firmly positioned on the frame body 1, and can remain stable even if there is a certain external force during the welding process.

[0051] Furthermore, it also includes a connecting plate 13 . There are a plurality of connecting plates 13 . One connecting plate 13 is disposed on each rotating connecting end 6 . The mounting frame 101 is disposed on the rotating connecting end 6 through the connecting plate 13 .

[0052] In the above solution, the connecting plate 13 adopts a structure of angle steel plus ribbed plate, which is fixed to the side end of the installation frame 101 by welding or bolt connection, and the other end is connected to the outer ring of the rotating connection end 6 by bolts. The connecting plate 13 serves as a connecting component between the frame body 1 and the rotating connection end 6 of the support seat 5, stably installing the frame body 1 on the support seat 5, and can effectively transmit force and torque, ensuring the stability and reliability of the frame body 1 during the rotation process.

[0053] Working process: When the frame body 1 needs to rotate around the rotating connection end 6 of the support seat 5, the connecting plate 13 rotates with the frame body 1. The connecting plate 13 ensures that the connection between the frame body 1 and the support seat 5 is firm during the rotation process, and there will be no loosening or displacement.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A positioning device for welding a truck compartment, used for positioning a compartment plate to be processed, characterized in that: include: The frame body (1) is provided with the carriage plate placed on the top surface of the frame body (1). A lifting member (2) is arranged on the bottom surface of the frame body (1); a first clamping plate (3), wherein the middle portion of the first clamping plate (3) is hinged to the frame body (1), one end of the first clamping plate (3) abuts against the lifting member (2), and the other end of the first clamping plate (3) is located on one side of the top of the frame body (1), and the first clamping plate (3) is used to press and position one side of the carriage plate; A second clamping plate (4), one end of the second clamping plate (4) is hinged on the lifting member (2), the other end of the second clamping plate (4) is located at the top of the frame body (1), the middle part of the second clamping plate (4) is slidably arranged on the side wall of the frame body (1), and the second clamping plate (4) is used to press and position the other side edge of the car body plate.

2. A positioning device for welding of a truck compartment according to claim 1, characterized in that: Also includes: A plurality of support seats (5) are provided, wherein the plurality of support seats (5) are respectively located on both sides of the frame body (1), and the support seat (5) has a rotating connection end (6). A side end of the frame body (1) is arranged on the rotating connection end (6), and the rotating connection end (6) is used to drive the deflection angle of the frame body (1).

3. A positioning device for welding of a truck compartment according to claim 2, characterized in that: The frame body (1) comprises: The installation frame (101) is rectangular; A bottom plate (102) is arranged at the bottom of the installation frame (101), and the lifting component (2) is arranged on the bottom plate (102).

4. A positioning device for welding of a truck compartment according to claim 3, characterized in that: Also includes: A bearing plate (7) is arranged on the movable end of the lifting member (2), and the first clamping plate (3) and the second clamping plate (4) are both connected to the lifting member (2) via the bearing plate (7).

5. A positioning device for welding of a truck compartment according to claim 4, characterized in that: The first clamping plate (3) is L-shaped, and the inflection point of the first clamping plate (3) is hinged to the bottom plate (102); and further comprises: An abutment rod (8) is arranged on one end of the first clamping plate (3), and the first clamping plate (3) is slidably abutted against the bearing plate (7) via the abutment rod (8); A first extrusion rod (10) is arranged on the other end of the first clamping plate (3), and the first extrusion rod (10) is located on one side of the top of the installation frame (101).

6. A positioning device for welding of a truck compartment according to claim 3, characterized in that: Also includes: A spring (9) has one end abutting against the upper bottom surface of the mounting frame (101) and the other end abutting against the top surface of the first clamping plate (3), the spring (9) being used to provide the first clamping plate (3) with a force to press the carriage plate.

7. A positioning device for welding of a truck compartment according to claim 3, characterized in that: The second clamping plate (4) is C-shaped, and a strip groove (401) is provided at a bending portion of the second clamping plate (4), the strip groove (401) being in a bending shape, and further comprising: A round rod (12) is arranged at the bottom of the installation frame (101); the round rod (12) penetrates and is slidably arranged in the strip groove (401); after the lifting member (2) drives the second clamping plate (4) to move upward, the round rod (12) guides the strip groove (401) to deflect.

8. A positioning device for welding of a truck compartment according to claim 5, characterized in that: Also includes: A second extrusion rod (11) is arranged at one end of the second clamping plate (4), and the second extrusion rod (11) is located at the top of the installation frame (101), and the second extrusion rod (11) is used to press the top and side of the carriage plate.

9. A positioning device for welding of a truck compartment according to claim 8, characterized in that: The first extrusion rod (10) and the second extrusion rod (11) both have a friction surface.

10. A positioning device for truck compartment welding processing according to claim 3, characterized in that: Also includes: There are a plurality of connecting plates (13), one connecting plate (13) being arranged on each rotating connecting end (6), and the mounting frame (101) is arranged on the rotating connecting end (6) via the connecting plate (13).

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