CN217394788U

CN217394788U - Vehicle body pressing positioning device

Info

Publication number: CN217394788U
Application number: CN202220325963.9U
Authority: CN
Inventors: 杜继霖; 廖孟军; 张�杰; 杨建楠
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-09-09
Anticipated expiration: 2032-02-17

Abstract

The utility model relates to a vehicle body pushing positioning device, which comprises a base, a support frame, a positioning piece and a first driving component, wherein the support frame is movably arranged on the base along a first direction and a second direction, the first direction is parallel to the up-and-down direction, and the second direction is perpendicular to the first direction; the positioning piece is arranged on the support frame and used for positioning the vehicle body in the first direction; first drive assembly establishes on the base, just first drive assembly with the support frame links to each other, so that the drive the support frame is followed first direction with the second direction removes, the utility model discloses an automobile body pushes down positioner has the security height, advantage that the cost of labor is low.

Description

Vehicle body pressing positioning device

Technical Field

The utility model relates to an automobile processing technology field specifically relates to an automobile body pushes down positioner.

Background

When the automobile body and the chassis are assembled, the automobile body can be jacked up by the elasticity of the chassis shock absorber, and the assembly efficiency is influenced. In the related art, in order to avoid jacking up the vehicle body, the rope is connected with the vehicle body manually, the vehicle body is fixed on the ground, the rope is removed from the vehicle body after assembly is completed, and the risk of falling of the rope exists in the assembly process. Therefore, the related art has the problems of low safety and high labor cost.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a positioner is pushed down to automobile body is proposed, and this positioner is pushed down to automobile body has the security height, advantage that the cost of labor is low.

The utility model discloses automobile body pushes down positioner, include: a base; the supporting frame is movably arranged on the base along a first direction and a second direction, the first direction is parallel to the vertical direction, and the second direction is perpendicular to the first direction; the positioning piece is arranged on the support frame and used for positioning the vehicle body in the first direction; and the first driving assembly is arranged on the base and is connected with the supporting frame so as to drive the supporting frame to move along the first direction and the second direction.

The utility model discloses automobile body pushes down positioner utilizes a drive assembly drive support frame to remove, can drive the setting element and remove along first direction and second direction to realize fixing a position the automobile body on the first direction, the reliability is high, and has saved the cost of labor.

Therefore, the utility model discloses automobile body pushes down positioner has the security height, advantage that the cost of labor is low.

In some embodiments, the support frame includes first support arm and second support arm, the setting element includes first setting element and second setting element, first setting element is established on the first support arm, the second setting element is established on the second support arm, the length direction of first support arm with the length direction's of second support arm contained angle more than or equal to 30 degrees and less than or equal to 90 degrees.

In some embodiments, the first support arm includes a first end and a second end opposite to each other in a length direction thereof, the second support arm includes a third end and a fourth end opposite to each other in the length direction thereof, the first end is connected to the third end, the first positioning element is disposed at the second end, and the second positioning element is disposed at the third end.

In some embodiments, the first positioning member includes a first connecting portion connected to the first support arm and a first positioning portion for positioning a vehicle body in the first direction,

the second positioning part comprises a second connecting part and a second positioning part, the second connecting part is connected with the second supporting arm, and the second positioning part is used for positioning the vehicle body in the first direction.

In some embodiments, the first positioning portion and the second positioning portion are made of flexible materials.

In some embodiments, the first positioning member is rotatably disposed on the first support arm, and the extending direction of the rotation axis of the first positioning member is parallel to the first direction,

and/or the presence of a gas in the atmosphere,

the second positioning piece is rotatably arranged on the second supporting arm, and the extending direction of the rotating axis of the second positioning piece is parallel to the first direction;

the vehicle body pressing positioning device further comprises a second driving assembly, the second driving assembly is arranged on the supporting piece, and the second driving assembly is connected with the first positioning piece and/or the second positioning piece so as to drive the first positioning piece and/or the second positioning piece to rotate.

In some embodiments, the vehicle body pressing positioning device further comprises a limiting assembly, the limiting assembly is arranged on the first supporting arm and/or the second supporting arm, and the first positioning piece and/or the second positioning piece are/is provided with a contact portion which is in contact with the limiting assembly.

In some embodiments, the first positioning element is fixedly connected to the first support arm, the second positioning element is rotatably disposed on the second support arm around a rotation axis of the second positioning element, the limiting assembly includes a first limiting element and a second limiting element, the first limiting element is disposed on one side of the second positioning element in a third direction, the second limiting element is disposed on the other side of the second positioning element in the third direction, and the third direction is perpendicular to the first direction and the second direction.

In some embodiments, the supporting frame further includes a mounting bracket fixed to the second supporting arm, one of the first limiting member and the second limiting member is disposed on the mounting bracket, and the other of the first limiting member and the second limiting member is disposed on the second supporting arm.

In some embodiments, the first driving assembly comprises a movable base, a first driver and a second driver, the movable base is movably arranged on the base along the first direction, the supporting frame is movably arranged on the movable base along the second direction,

the first driver is arranged on the base and connected with the movable seat so as to drive the movable seat to move along the first direction,

the second driver is arranged on the moving seat and connected with the supporting frame so as to drive the supporting frame to move along the second direction.

Drawings

Fig. 1 is a schematic structural view of a vehicle body pressing positioning device according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a schematic view of a part of the structure of the vehicle body pressing positioning device according to the embodiment of the present invention.

Reference numerals are as follows:

a base 10; a base plate 11; a base 12; a connecting seat 13; the first guide portion 131;

a support frame 20; a frame body 21; the second sliding portion 211; a first support arm 22; a first end 221; a second end 222; a second support arm 23; a third end 231; a fourth end 232; a mounting bracket 24;

a positioning member 30; a first positioning member 31; a first connection portion 311; a first positioning portion 312; a second positioning member 32; the second connection portion 321; a contact portion 3211; a second positioning portion 322;

a first drive assembly 40; a movable base 41; a first sliding portion 411; a second guide portion 412; a second driver 42;

a spacing assembly 50; a second stopper 51; a second contact 511;

a second drive assembly 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The vehicle body hold-down positioning device according to the embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1-3, a positioning device for pressing a vehicle body according to an embodiment of the present invention includes a base 10, a supporting frame 20, a positioning member 30, and a first driving assembly 40.

The supporting frame 20 is movably disposed on the base 10 along a first direction parallel to the up-down direction and a second direction perpendicular to the first direction, i.e., the first direction is the up-down direction in fig. 1, and the second direction is the front-back direction in fig. 1. That is, the stand 20 is movable in the up-down direction and the front-rear direction.

The positioning member 30 is disposed on the supporting frame 20, and is used for positioning the vehicle body in a first direction, the first driving assembly 40 is disposed on the base 10, and the first driving assembly 40 is connected to the supporting frame 20 so as to drive the supporting frame 20 to move in the first direction and a second direction.

It is understood that the positioning member 30 is fixed to the supporting frame 20, and the first driving assembly 40 drives the supporting frame 20 to move in the up-down direction and the front-rear direction. In the assembly process of the vehicle body and the chassis, after the vehicle body moves to the upper part of the chassis, the first driving component 40 drives the support frame 20 to enter the vehicle body in the front-rear direction, then drives the support frame 20 to move downwards, and presses the vehicle body downwards for positioning.

That is to say, the utility model discloses the automobile body pushes down positioner utilizes first drive assembly 40 drive support frame 20 to remove, drives setting element 30 and removes along first direction and second direction to realize fixing a position the automobile body in the first direction, the reliability is high, and has saved the cost of labor.

In some embodiments, as shown in fig. 1 and 3, the supporting frame 20 includes a frame body 21, a first supporting arm 22 and a second supporting arm 23, the first supporting arm 22 and the second supporting arm 23 are fixed on the frame body 21, and the positioning member 30 includes a first positioning member 31 and a second positioning member 32. The first positioning element 31 is arranged on the first support arm 22, the second positioning element 32 is arranged on the second support arm 23, and an included angle between the length direction of the first support arm 22 and the length direction of the second support arm 23 is greater than or equal to 30 degrees and less than or equal to 90 degrees.

Preferably, the angle between the length direction of the first support arm 22 and the length direction of the second support arm 23 is 60 degrees.

It can be understood that the first support arm 22 and the second support arm 23 are opened at a certain angle, and the two sides of the vehicle body are pressed down and positioned by the first positioning member 31 and the second positioning member 32, respectively, so as to improve reliability and stability.

Therefore, the utility model discloses automobile body pushes down positioner has the advantage that the reliability is high, stability is high.

In some embodiments, as shown in fig. 1 and 3, the first support arm 22 includes a first end 221 (e.g., a front end of the first support arm 22 in fig. 1) and a second end 222 (e.g., a rear end of the first support arm 22 in fig. 1) opposite to each other in a length direction thereof, the second support arm 23 includes a third end 231 (e.g., a front end of the second support arm 23 in fig. 1) and a fourth end 232 (e.g., a rear end of the second support arm 23 in fig. 1) opposite to each other in a length direction thereof, the first end 221 is connected to the third end 231, the first positioning element 31 is disposed at the second end 222, and the second positioning element 32 is disposed at the third end 231.

That is, the first support arm 22 and the second support arm 23 form a figure-of-eight structure, the first positioning member 31 is disposed at the rear end of the first support arm 22, and the second positioning member 32 is disposed at the rear end of the first support arm 22.

It can be understood that, under the condition that the positions of the first positioning member 31 and the second positioning member 32 for positioning the vehicle body by pressing down are fixed, the first positioning member 31 is arranged at the rear end of the first support arm 22, the second positioning member 32 is arranged at the rear end of the first support arm 22, the lengths of the first support arm 22 and the second support arm 23 are minimum, and the opening angle of the first support arm 22 and the second support arm 23 is minimum, so that the size of the support frame 20 can be reduced, and the support frame 20 can be prevented from interfering with other equipment or other parts of the vehicle body.

In some embodiments, as shown in fig. 1, the first positioning member 31 includes a first connecting portion 311 and a first positioning portion 312, the first connecting portion 311 is connected to the first support arm 22, and the first positioning portion 312 is used for positioning the vehicle body in the first direction. The second positioning member 32 includes a second connecting portion 321 and a second positioning portion 322, the second connecting portion 321 is connected to the second support arm 23, and the second positioning portion 322 is used for positioning the vehicle body in the first direction.

It is understood that the first positioning portion 312 is provided below the first connecting portion 311 and the second positioning portion 322 is provided below the second connecting portion 321, thereby facilitating press-down positioning of the vehicle body.

In addition, the first connecting portion 311 and the first positioning portion 312 are made of different materials, the second connecting portion 321 and the second positioning portion 322 are made of different materials, the first connecting portion 311 and the first support arm 22 are made of the same material or have the same hardness, and the second connecting portion 321 and the second support arm 23 are made of the same material or have the same hardness, so that the first connecting portion 311 and the first support arm 22 are connected, and the second connecting portion 321 and the second support arm 23 are connected.

The first positioning portion 312 and the second positioning portion 322 are made of flexible materials, so as to prevent the vehicle body from being scratched when the vehicle body contacts.

Alternatively, the first positioning portion 312 and the second positioning portion 322 are made of nylon, rubber, or plastic.

Preferably, the first positioning portion 312 and the second positioning portion 322 are made of nylon

In some embodiments, as shown in fig. 1 and 2, a vehicle body hold-down positioning apparatus of an embodiment of the present invention further includes a second drive assembly 60. The first positioning member 31 is rotatably disposed on the first support arm 22, and the extending direction of the rotation axis of the first positioning member 31 is parallel to the first direction, and/or the second positioning member 32 is rotatably disposed on the second support arm 23, and the extending direction of the rotation axis of the second positioning member 32 is parallel to the first direction.

The second driving assembly 60 is disposed on the supporting member, and the second driving assembly 60 is connected to the first positioning member 31 and/or the second positioning member 32 so as to drive the first positioning member 31 and/or the second positioning member 32 to rotate.

That is, the first positioning element 31 is rotatably disposed on the first supporting arm 22, the second positioning element 32 is fixedly connected to the second supporting arm 23, the second driving assembly 60 is connected to the first positioning element 31, and the second driving assembly 60 drives the first positioning element 31 to rotate around its rotation axis; or, the second positioning element 32 is rotatably disposed on the second support arm 23, the first positioning element 31 is fixedly connected to the first support arm 22, the second driving assembly 60 is connected to the second positioning element 32, and the second driving assembly 60 drives the second positioning element 32 to rotate around its rotation axis; or, the first positioning element 31 is rotatably disposed on the first supporting arm 22, the second positioning element 32 is rotatably disposed on the second supporting arm 23, the second driving assembly 60 is connected to the first positioning element 31 and the second positioning element 32, the second driving assembly 60 drives the first positioning element 31 to rotate around its rotation axis, and the second driving assembly 60 drives the second positioning element 32 to rotate around its rotation axis.

It can be understood that, when the vehicle body pressing positioning device of the embodiment of the present invention utilizes the first driving assembly 40 to drive the supporting frame 20 to enter the vehicle body, the second driving assembly 60 is utilized to drive the first positioning member 31 and/or the second positioning member 32 to rotate, so as to avoid collision with other devices or other parts of the vehicle body.

Therefore, the utility model discloses automobile body pushes down positioner has the high advantage of security.

In some embodiments, as shown in fig. 1 to 3, the positioning device for pressing down a vehicle body according to the embodiment of the present invention further includes a limiting assembly 50, the limiting assembly 50 is disposed on the first supporting arm 22 and/or the second supporting arm 23, and the first positioning element 31 and/or the second positioning element 32 is disposed with a contact portion 3211 contacting the limiting assembly 50.

That is to say, when the first positioning element 31 is rotatably arranged on the first supporting arm 22, the first positioning element 31 is provided with the contact portion 3211 which is in contact with the limiting component 50, so that the first positioning element 31 is limited, the first positioning element 31 is prevented from rotating when being pressed downwards for positioning, the rotation angle of the first positioning element 31 is prevented from being too large, and the first positioning element can be prevented from colliding with other devices or other parts of the vehicle body, so that the safety and the reliability are improved.

When the second positioning element 32 is rotatably arranged on the second supporting arm 23, the second positioning element 32 is provided with a contact portion 3211 which is in contact with the limiting component 50, so that the second positioning element 32 is limited, the first positioning element 31 is prevented from rotating when being pressed down for positioning, the rotation angle of the first positioning element 31 is prevented from being too large, and the first positioning element can be prevented from colliding with other equipment or other parts of the vehicle body, and the safety and the reliability are improved.

Therefore, the utility model discloses automobile body pushes down positioner has the advantage that the reliability is high, the security is high.

In some embodiments, as shown in fig. 1-3, the first positioning element 31 is fixedly connected to the first supporting arm 22, the second positioning element 32 is rotatably disposed on the second supporting arm 23 around the rotation axis thereof, the limiting assembly 50 includes a first limiting element (not shown) disposed on one side of the second positioning element 32 in a third direction (e.g., a left-right direction in fig. 1) and a second limiting element 51 disposed on the other side of the second positioning element 32 in the third direction, and the third direction is perpendicular to the first direction and the second direction.

That is, the first limiting member is located at the left side of the second positioning member 32, and the second limiting member 51 is located at the right side of the second positioning member 32, so that the second positioning member 32 is limited in two directions, thereby improving safety and reliability.

It is understood that the second positioning member 32 has a contact portion 3211, the first limiting member is provided with a first contact for contacting the contact portion 3211, and the second limiting member 51 is provided with a second contact 511 for contacting the contact portion 3211. When the second positioning member 32 rotates, the contact portion 3211 contacts the first contact or the second contact 511, and stops rotating and is kept at the current position.

Specifically, when the first driving assembly 40 drives the supporting frame 20 to move in and out of the vehicle body, the second driving assembly 60 drives the second positioning member 32 to rotate leftward (inward), so as to avoid other devices or other parts of the vehicle body and avoid collision; after the first driving assembly 40 drives the supporting frame 20 to enter the vehicle body, the second driving assembly 60 drives the second positioning member 32 to rotate rightward (outward), and then the first driving assembly 40 drives the supporting frame 20 to move downward, so that the vehicle body is pressed downward to be positioned.

In some embodiments, as shown in fig. 1 to fig. 3, the supporting frame 20 further includes a mounting bracket 24, the mounting bracket 24 is fixed on the second supporting arm 23, one of the first limiting member and the second limiting member 51 is disposed on the mounting bracket 24, and the other of the first limiting member and the second limiting member 51 is disposed on the second supporting arm 23.

Specifically, the first limiting member is disposed on the mounting bracket 24, and the second limiting member 51 is disposed on the second supporting arm 23. Therefore, the mounting bracket 24 provides a mounting position for the first limiting member, so that the first limiting member and the second limiting member 51 respectively limit the second positioning member 32 at the left and right sides.

In some embodiments, the second driving assembly 60 comprises at least one air cylinder, and the first and second limiting members 51 are both pneumatic valve limit switches.

It can be understood that the cylinder body of the air cylinder is connected with the second supporting arm 23, and the telescopic rod of the air cylinder is connected with the second positioning member 32, so that the second positioning member 32 can be driven to rotate on the second supporting arm 23. The first limiting member and the second limiting member 51 are both air-operated valve limit switches arranged on an air path of the air cylinder, and after the first contact point of the first limiting member or the second contact point 511 of the second limiting member 51 contacts with the contact portion 3211, the first limiting member or the second limiting member 51 closes the air path, so that the air cylinder stops operating.

Therefore, the limiting component 50 can control the action of the second driving component 60, thereby realizing the limiting function and improving the safety and the reliability.

In some embodiments, as shown in FIG. 1, the first drive assembly 40 includes a movable mount 41, a first driver, and a second driver 42. The movable base 41 is movably disposed on the base 10 along a first direction, the supporting frame 20 is movably disposed on the movable base 41 along a second direction, the first driver is disposed on the base 10 and connected to the movable base 41 to drive the movable base 41 to move along the first direction, the second driver 42 is disposed on the movable base 41 and connected to the supporting frame 20 to drive the supporting frame 20 to move along the second direction.

That is, the first driver drives the movable base 41 to move up and down with respect to the base 10, and the second driver 42 drives the supporting frame 20 to move back and forth with respect to the movable base 41.

Specifically, the base 10 includes a base plate 11, a base 12 and a connecting seat 13, the connecting seat 13 is arranged above the base 12, the base plate 11 is arranged at the bottom of the base 12, and the base plate 11 is installed on the ground after being leveled by anchor bolts, so as to ensure the levelness of the base 10.

The connecting base 13 is provided with a first guiding portion 131, the moving base 41 is provided with a first sliding portion 411, and the first guiding portion 131 is matched with the first sliding portion 411, so that the moving base 41 is movably arranged on the base 10 along a first direction.

The movable base 41 is provided with a second guiding portion 412, the frame body 21 of the supporting frame 20 is provided with a second sliding portion 211, and the second guiding portion 412 is matched with the second sliding portion 211, so that the supporting frame 20 is movably arranged on the movable base 41 along the second direction.

Alternatively, the first and second actuators 42 may be electric, pneumatic, oil or other linear actuators.

Preferably, the first and second drivers 42 are both electric cylinders and are driven by servo motors to facilitate automated control.

Furthermore, the utility model discloses the automobile body pushes down positioner sets up safe region scanning device to avoid operation process personnel health to be close to or stretch into the utility model discloses the automobile body pushes down positioner's workspace.

It should be noted that, when the vehicle body is assembled with the chassis, the height of the vehicle body jacked up by the shock absorber on the chassis does not exceed 10mm, and the assembly of the vehicle body and the chassis is not affected. The utility model discloses when automobile body pushing down positioner's setting element 30 pushed down the location to the automobile body, setting element 30 had 2-4 mm's distance with the automobile body, can not influence the assembly on automobile body and chassis, avoided the automobile body to receive big external pressure and warp moreover to the security has been improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A vehicle body push-down positioning device, comprising:

a base;

the supporting frame is movably arranged on the base along a first direction and a second direction, the first direction is parallel to the vertical direction, and the second direction is perpendicular to the first direction;

the positioning piece is arranged on the supporting frame and used for positioning the vehicle body in the first direction; and

the first driving assembly is arranged on the base and connected with the supporting frame so as to drive the supporting frame to move along the first direction and the second direction.

2. The vehicle body downward pressing positioning device according to claim 1, wherein the support frame comprises a first support arm and a second support arm, the positioning member comprises a first positioning member and a second positioning member, the first positioning member is arranged on the first support arm, the second positioning member is arranged on the second support arm, and an included angle between the length direction of the first support arm and the length direction of the second support arm is greater than or equal to 30 degrees and less than or equal to 90 degrees.

3. The vehicle body push-down positioning device according to claim 2, wherein the first support arm includes a first end and a second end opposite to each other in a longitudinal direction thereof, the second support arm includes a third end and a fourth end opposite to each other in the longitudinal direction thereof, the first end is connected to the third end, the first positioning member is provided at the second end, and the second positioning member is provided at the third end.

4. The vehicle body press-down positioning device according to claim 2, wherein the first positioning member includes a first connecting portion connected to the first support arm and a first positioning portion for positioning the vehicle body in the first direction,

5. The vehicle body push down positioning device according to claim 4, wherein the first positioning portion and the second positioning portion are made of a flexible material.

6. The vehicle body depression positioning apparatus according to any one of claims 2 to 5, wherein the first positioning member is rotatably provided on the first support arm, and a direction of extension of a rotational axis of the first positioning member is parallel to the first direction,

and/or the presence of a gas in the gas,

7. The vehicle body press-down positioning device according to claim 6, further comprising a limiting assembly, wherein the limiting assembly is arranged on the first support arm and/or the second support arm, and the first positioning member and/or the second positioning member is provided with a contact portion which is in contact with the limiting assembly.

8. The vehicle body downward-pressing positioning device according to claim 7, wherein the first positioning element is fixedly connected to the first support arm, the second positioning element is rotatably disposed on the second support arm about a rotation axis thereof, the limiting assembly includes a first limiting element and a second limiting element, the first limiting element is disposed on one side of the second positioning element in a third direction, the second limiting element is disposed on the other side of the second positioning element in the third direction, and the third direction is perpendicular to the first direction and the second direction.

9. The vehicle body hold-down positioning device according to claim 8, wherein the support frame further comprises a mounting bracket fixed to the second support arm, one of the first and second limiting members is provided on the mounting bracket, and the other of the first and second limiting members is provided on the second support arm.

10. The vehicle body press-down positioning device according to any one of claims 1 to 5, and 7 to 9, wherein the first driving assembly includes a moving base, a first driver, and a second driver, the moving base being movably provided on the base in the first direction, the support frame being movably provided on the moving base in the second direction,

the second driver is arranged on the movable seat and connected with the support frame so as to drive the support frame to move along the second direction.