Clamp for fixing longitudinal beam mounting bracket

Abstract

The utility model discloses a fixture for fixing a longitudinal beam mounting bracket, which comprises a fixing plate, a clamping device and a positioning plate, the clamping device and the positioning plate are fixedly connected with the fixing plate and respectively positioned on two sides of the fixing plate, the longitudinal beam mounting bracket is provided with a positioning hole, and the surface of the positioning plate is provided with a positioning bump matched with the positioning hole; the clamping device comprises an air cylinder and three pressing block clamping jaw structures rotationally connected with the air cylinder, the air cylinder is fixedly connected with the fixing plate, one end of each pressing block clamping jaw structure is connected with the air cylinder, the middle of each pressing block clamping jaw structure is rotationally connected with the fixing plate, and the other end of each pressing block clamping jaw structure is provided with a pressing block used for pressing the longitudinal beam mounting support. And the three pressing block clamping jaw structures act at the same time to press and loosen the longitudinal beam mounting bracket. The mounting bracket for fixing the longitudinal beam is simple in structure, and the use space of a clamp can be saved while the longitudinal beam mounting bracket is reliably positioned.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, specifically to a fixture for fixing a longitudinal beam mounting bracket. Background Technology

[0002] The longitudinal beam is one of the core load-bearing structures of a vehicle chassis or frame. It is typically made of high-strength steel, aluminum alloy, or composite materials, and is long and narrow, arranged along the front-to-rear direction of the vehicle body. It plays a crucial role in vehicle design, safety, and performance. Longitudinal beam mounting brackets are welded to the ends of the beams for positioning and mating with other components of the vehicle.

[0003] The longitudinal beam mounting bracket is a vertically placed piece structure. During the splicing of the longitudinal beam mounting bracket to the longitudinal beam, it is necessary to position the piece of longitudinal beam mounting bracket to ensure that the longitudinal beam mounting bracket will not shake during the welding process.

[0004] Currently, the positioning fixture for longitudinal beam mounting brackets includes positioning pins and clamping blocks. The positioning pins restrict the position of the longitudinal beam mounting bracket, and then the clamping blocks fix the bracket in place. To prevent the longitudinal beam mounting bracket from shaking during welding, clamping blocks are typically placed in three directions corresponding to the three protruding positions of the bracket to ensure its stability. Using three clamping blocks usually requires three corresponding cylinders. However, due to the small area of ​​the longitudinal beam mounting bracket, the available space near it on the welding fixture in automated welding production lines is limited. It is difficult to arrange three clamping cylinders and one positioning pin within this limited space. Therefore, longitudinal beam mounting brackets are difficult to weld on automated production lines, affecting the improvement of longitudinal beam production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a clamp for fixing a longitudinal beam mounting bracket. This clamp has a simple structure and can save space while achieving reliable positioning of the longitudinal beam mounting bracket.

[0006] To achieve the above objectives, this utility model provides a clamp for fixing a longitudinal beam mounting bracket, including a fixing plate, a clamping device and a positioning plate. The clamping device and the positioning plate are fixedly connected to the fixing plate and are located on both sides of the fixing plate. The longitudinal beam mounting bracket has positioning holes, and the surface of the positioning plate is provided with positioning protrusions that cooperate with the positioning holes.

[0007] The clamping device includes a cylinder and three pressure block claw structures rotatably connected to the cylinder. The cylinder is fixedly connected to the fixed plate. One end of the pressure block claw structure is connected to the cylinder, the middle is rotatably connected to the fixed plate, and the other end is provided with a pressure block for pressing the longitudinal beam mounting bracket. By extending and retracting the cylinder, the three pressure block claw structures move simultaneously to achieve the pressing and releasing of the longitudinal beam mounting bracket.

[0008] Preferably, the clamping jaw structure includes a clamping jaw and a first connecting member. The first connecting member is fixedly connected to the front end of the cylinder. One end of the clamping jaw is connected to the first connecting member. The middle part of the clamping jaw is connected to the fixed plate. The clamping block is disposed at the other end of the clamping jaw.

[0009] Preferably, the clamping jaw structure further includes a second connecting member fixedly connected to the fixed plate. The second connecting member is rotatably connected to the clamping jaw via a second connecting pin. The second connecting member is provided with a second guide groove, and the clamping jaw is at least partially located in the second guide groove.

[0010] Preferably, the clamping jaws are provided with a first guide groove, which cooperates with a second connecting pin, and the second connecting pin slides within the first guide groove.

[0011] Preferably, the first guide groove includes an inclined section and a horizontal section, with the horizontal section positioned away from the cylinder.

[0012] Preferably, the clamp for fixing the longitudinal beam mounting bracket further includes a manual structure for pushing the first connector, the manual structure being rotatably connected to the first connector.

[0013] Preferably, the handle and the fixed plate are connected by a fourth connector, one end of which is rotatably connected to the handle and the other end of which is rotatably connected to the fixed plate.

[0014] According to the above technical solution, the positioning plates and clamping devices located on both sides of the fixed plate of this utility model can respectively realize the positioning and clamping of the longitudinal beam mounting bracket.

[0015] The positioning of the longitudinal beam mounting bracket can be achieved by the cooperation of the positioning hole and the positioning protrusion.

[0016] There are three clamping blocks, and the clamping blocks of the three clamping blocks correspond to the three protruding positions of the longitudinal beam mounting bracket.

[0017] Because the middle part of the pressure block gripper structure is rotatably connected to the fixed plate, the pressure block gripper structure can rotate around the position where it is connected to the fixed plate. The pressure block gripper structure is also rotatably connected to the cylinder. During the extension and retraction of the cylinder, it can simultaneously drive the pressure block gripper structure to move closer to or away from the fixed plate. During the process of the pressure block gripper structure moving closer to or away from the fixed plate, the pressure block gripper structure rotates around the connection point with the fixed plate, thereby driving the pressure block to move upward or downward, thus tightening or loosening the longitudinal beam mounting bracket.

[0018] In one embodiment, the cylinder's telescopic rod is fixedly connected to a fixed plate, and the pressure block gripper structure is fixedly connected to the front end face of the cylinder. The three pressure block gripper structures are evenly distributed along the end face of the cylinder, ensuring consistent movement of the three gripper structures when the cylinder's telescopic rod moves linearly. After the cylinder extends and is inlet air, it moves away from the fixed plate, simultaneously pushing the pressure block gripper structure to rotate. The pressure block at the other end moves downwards to tighten the longitudinal beam mounting bracket.

[0019] When the cylinder is vented and the telescopic rod extends, the end of the clamping block structure connected to the cylinder also moves linearly with the cylinder. However, during the rotation of the clamping block structure, the connection point with the cylinder needs to have displacement in both the X and Z directions. If the clamping block structure is only rotated to connect with the cylinder, interference will occur at the connection point. Preferably, a U-shaped hole can be provided at the connection point between the clamping block structure and the cylinder. This U-shaped hole allows the clamping block structure to displace simultaneously in both the X and Y directions during rotation.

[0020] In one embodiment, a U-shaped groove is provided at the position where the pressure block gripper structure is connected to the cylinder. The pressure block gripper structure and the cylinder are rotatably connected by a pin. During the movement of the cylinder, the pin slides in the U-shaped groove, so that the gripper structure can be displaced in both the X and Y directions simultaneously during rotation.

[0021] By properly setting the specific shape of the clamping block structure, it is possible to achieve clamping of the clamping block onto the longitudinal beam mounting bracket during the rotation of the clamping block structure.

[0022] In summary, the positioning plate in front of the fixed plate of this fixture can be used as a positioning pin for the longitudinal beam mounting bracket. The cylinder behind the fixed plate can drive the clamping device to simultaneously position the three protruding positions of the longitudinal beam mounting bracket, making the fixture structure more compact and thus saving space. Furthermore, the fixture can be conveniently connected to welded tooling via the fixed connection points on the fixed plate, which is beneficial for use in automated production lines.

[0023] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of a clamp used to fix a longitudinal beam mounting bracket;

[0026] Figure 2 This is a schematic diagram of a positioning plate;

[0027] Figure 3 This is a schematic diagram of a fixing plate;

[0028] Figure 4 This is a schematic diagram of a first connecting member;

[0029] Figure 5 This is a schematic diagram of a second connector;

[0030] Figure 6 It is a three-dimensional diagram of a clamping jaw;

[0031] Figure 7 yes Figure 6 The main view.

[0032] Explanation of reference numerals in the attached figures

[0033] 1. Fixed plate 2. Positioning plate 2

[0034] 3-cylinder 32-clamping jaws

[0035] 33 Second connector 31 First connector

[0036] 321 First guide groove 331 Second guide groove

[0037] 41 Handle 42 Fourth Connector 42

[0038] 21 Positioning protrusion 11 Second connector mounting position

[0039] 12 Fixed connection position 311 First rotation position 311

[0040] 312 Second Rotation Position 332 Connecting Pin Hole Detailed Implementation

[0041] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0042] In this utility model, unless otherwise stated, directional terms such as "one end," "middle," and "other end" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0043] See Figure 1 The fixture for fixing the longitudinal beam mounting bracket includes a fixing plate 1, a clamping device and a positioning plate 2. The clamping device and the positioning plate 2 are fixedly connected to the fixing plate 1 and are located on both sides of the fixing plate 1 respectively. The longitudinal beam mounting bracket has positioning holes, and the surface of the positioning plate 2 is provided with positioning protrusions 21 that cooperate with the positioning holes.

[0044] The clamping device includes a cylinder 3 and three pressure block claw structures rotatably connected to the cylinder 3. The cylinder 3 is fixedly connected to the fixed plate 1. One end of the pressure block claw structure is rotatably connected to the cylinder 3, the middle is rotatably connected to the fixed plate 1, and the other end is provided with a pressure block for pressing the longitudinal beam mounting bracket. By extending and retracting the cylinder 3, the pressure block claw structure can press and release the longitudinal beam mounting bracket.

[0045] By implementing the above technical solution, the positioning plates 2 and clamping devices located on both sides of the fixed plate 1 can respectively position and clamp the longitudinal beam mounting bracket.

[0046] The positioning of the longitudinal beam mounting bracket can be achieved by the cooperation of the positioning hole and the positioning protrusion 21.

[0047] There are three clamping blocks, and the clamping blocks of the three clamping blocks correspond to the three protruding positions of the longitudinal beam mounting bracket.

[0048] Since the middle part of the pressure block gripper structure is rotatably connected to the fixed plate 1, the pressure block gripper structure can rotate around the position where it is connected to the fixed plate 1. The pressure block gripper structure is also rotatably connected to the cylinder 3. During the extension and retraction of the cylinder 3, it can simultaneously drive the pressure block gripper structure to move closer to or away from the fixed plate 1. During the process of the pressure block gripper structure moving closer to or away from the fixed plate 1, the pressure block gripper structure rotates around the connection point with the fixed plate 1, thereby driving the pressure block to move upward or downward, thereby tightening or loosening the longitudinal beam mounting bracket.

[0049] In one embodiment, the telescopic rod of cylinder 3 is fixedly connected to the fixed plate 1, and the pressure block gripper structure is fixedly connected to the front end face of cylinder 3. The three pressure block gripper structures are evenly distributed along the end face of cylinder 3, ensuring the consistency of the movement of the three pressure block gripper structures when the telescopic rod of cylinder 3 moves in a straight line. After cylinder 3 extends with air intake, cylinder 3 moves away from the fixed plate 1, simultaneously pushing the pressure block gripper structure to rotate, and the pressure block at the other end moves downward to tighten the longitudinal beam mounting bracket.

[0050] When cylinder 3 is vented and the telescopic rod extends, the end of the clamping block structure connected to cylinder 3 also moves linearly with cylinder 3. However, during the rotation of the clamping block structure, the connection point with cylinder 3 needs to have displacement in both the X and Z directions. If the clamping block structure is only rotated to connect with cylinder 3, interference will occur at the connection point. Preferably, a U-shaped hole can be provided at the connection point of the clamping block structure with cylinder 3. This U-shaped hole allows the clamping block structure to be displaced simultaneously in the X and Y directions during rotation.

[0051] In one embodiment, a U-shaped groove is provided at the position where the pressure block gripper structure is connected to the cylinder 3. The pressure block gripper structure and the cylinder 3 are rotatably connected by a pin. During the movement of the cylinder 3, the pin slides in the U-shaped groove, so that the gripper structure can be displaced in both the X and Y directions simultaneously during the rotation.

[0052] By properly setting the specific shape of the clamping block structure, it is possible to achieve clamping of the clamping block onto the longitudinal beam mounting bracket during the rotation of the clamping block structure.

[0053] In summary, the positioning plate 2 located in front of the fixed plate 1 can be used as a positioning pin for the longitudinal beam mounting bracket. The cylinder 3 located behind the fixed plate 1 can drive the clamping device to simultaneously position the three protruding positions of the longitudinal beam mounting bracket, making the fixture structure more compact and saving space. Furthermore, the fixture can be conveniently connected to the welded tooling via the fixed connection points on the fixed plate 1, which is beneficial for use in automated production lines.

[0054] In this embodiment, preferably, the clamping jaw structure includes a clamping jaw 32 and a first connecting member 31. The first connecting member 31 is fixedly connected to the cylinder 3. One end of the clamping jaw 32 is connected to the first connecting member 31, the middle part of the clamping jaw 32 is connected to the fixing plate 1, and the other end of the clamping jaw 32 is provided with a clamping block for clamping the longitudinal beam mounting bracket.

[0055] The initial position of the clamping jaw 32 can be adjusted by setting the first connecting member 31. The first connecting member 31 has a first rotating position 311, and the clamping jaw 32 is rotatably connected to the first connecting member 31 through the first rotating position 311. Setting the height of the first rotating position 311 to be close to that of the second connecting member 33 allows the clamping jaw 32 to clamp and release the longitudinal beam mounting bracket with only a small rotation angle. This effectively shortens the working stroke of the cylinder 3, allowing it to clamp the longitudinal beam mounting bracket with only slight extension or retraction. This further saves space occupied by the fixture.

[0056] The first connector 31 is provided with a connecting hole corresponding to the position of the first rotation position 311, and the clamping jaw 32 is connected to the first connector 31 through the connecting hole.

[0057] In this embodiment, preferably, the clamping jaw structure further includes a second connecting member 33 fixedly connected to the fixed plate 1. The second connecting member 33 is rotatably connected to the clamping jaw 32 via a second connecting pin. The second connecting member 33 is provided with a second guide groove 331, and the clamping jaw 32 is at least partially located in the second guide groove 331.

[0058] By setting the second guide groove 331 to guide the clamping jaw 32, during the rotation of the clamping jaw, the part of the clamping jaw located in the second guide groove 331 can restrict the movement of the clamping jaw in the direction perpendicular to the Y axis, avoid the clamping jaw from deviating during the movement, and ensure the stability of the clamping jaw movement.

[0059] In this preferred embodiment, the clamping jaw 32 is provided with a first guide groove 321, which engages with a second connecting pin, and the second connecting pin slides within the first guide groove 321.

[0060] The clamping jaw 32 is rotatably connected to the first connecting part 31 via a pin. When the cylinder 3 performs telescopic movement, the clamping jaw 32 will rotate. During the rotation, the connection position between the clamping jaw 32 and the first connecting part will be displaced in both the X and Z directions. However, the telescopic movement of the cylinder 3 is only at the stroke position in the X direction. If the clamping jaw 32 and the fixed plate 1 cannot be relatively displaced in the Z direction, the clamping jaw 32 cannot rotate.

[0061] The first guide groove 321 is configured to cooperate with the second connecting pin. During the rotation of the pressure block jaws, the second connecting pin can slide along the first guide groove 321. By setting the shape of the guide groove, displacement space in the X direction can be provided for the second connecting pin.

[0062] The second connecting pin is connected to the second connecting piece 33 through the connecting pin hole 332.

[0063] The first guide groove 321 is configured to have a certain length. When the cylinder 3 is not ventilated, the end of the clamping jaw near the cylinder 3 is lower, and the end of the clamping jaw is higher. The first guide groove 321 extends obliquely upward. When the cylinder 3 is ventilated and the telescopic rod extends, the end face of the cylinder 3 will move backward, causing the clamping jaw 32 to retract. The second connecting pin moves obliquely upward within the first guide groove 321, thereby satisfying the displacement requirement of the clamping jaw relative to the fixed plate 1 and avoiding interference during the movement.

[0064] As the second connecting pin moves upward relative to the first guide groove 321, the clamping jaws between the second connecting pin and the first connecting plate lengthen. Therefore, the angle between the clamping jaws and the telescopic rod of the cylinder 3 decreases. Consequently, the end of the clamping jaw with the clamping block moves towards the longitudinal beam mounting bracket relative to the cylinder 3 before its movement, while simultaneously moving downward. This is precisely what is needed to clamp the longitudinal beam mounting bracket. Therefore, by appropriately setting the shape of the clamping jaws, the clamping of the longitudinal beam mounting bracket can be achieved.

[0065] In this manner, preferably, the first guide groove 321 includes an inclined section and a horizontal section connected to the inclined section, the horizontal section being away from the cylinder 3.

[0066] The inclined section of the first guide groove 321 allows one end of the clamping jaw 32 to approach the longitudinal beam mounting bracket horizontally, while simultaneously undergoing a vertical downward displacement. This means the clamping jaw is angled towards the longitudinal beam mounting bracket to clamp it. However, the fact that all three clamping jaws are angled towards the longitudinal beam mounting bracket may affect its position, potentially leading to inaccurate positioning.

[0067] A horizontal section is provided in the first guide groove 321 at a position away from the cylinder 3, allowing the pressure block to move linearly after the tilting motion. That is, when the second connecting pin moves along the tilting section, the pressure block tilts closer to the longitudinal beam mounting bracket until it reaches the same height as the protruding position on the longitudinal beam mounting bracket. Then, the second connecting pin moves along the horizontal section towards the pressure block, and correspondingly, the pressure block is pulled horizontally back until it presses against the longitudinal beam mounting bracket. This method allows the pressure block to approach the longitudinal beam mounting bracket in a direction perpendicular to the positioning plate 2, thereby achieving reliable clamping of the longitudinal beam mounting bracket.

[0068] In this embodiment, preferably, the clamp for fixing the longitudinal beam mounting bracket further includes a manual structure for pushing the first connector 31, the manual structure being connected to the first connector 31.

[0069] Under normal circumstances, the extension and retraction of cylinder 3 can easily drive the pressure block to clamp or loosen the longitudinal beam mounting bracket. However, when the gas supply or power fails and cylinder 3 cannot move, it is difficult to manually change the state of the pressure block due to the self-locking effect of the mechanism.

[0070] Therefore, a manual mechanism is set up so that the air-cut cylinder 3 can be pushed manually. By controlling the movement of the end face of cylinder 3, the clamping and loosening of the longitudinal beam mounting bracket can be achieved manually.

[0071] In one embodiment, the manual structure is directly fixedly connected to the first connecting member 31. By applying a pushing or pulling force to the first connecting member 31, the cylinder end face can be pushed or pulled.

[0072] In this embodiment, preferably, the handle 41 is connected to the fixing plate 1 by a fourth connector 42, one end of the fourth connector 42 is rotatably connected to the handle 41, and the other end is rotatably connected to the fixing plate 1.

[0073] The operator holds handle 41 and can drive cylinder 3 to move linearly by rotating handle 41, which is very labor-saving. The rotational motion of the hand end of handle 41 is converted into linear motion of the end by the swing of the fourth connector 42. Moreover, by setting the fourth connector 42, the movement of handle 41 is more streamlined.

[0074] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0075] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0076] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A clamp for fixing a longitudinal beam mounting bracket, characterized in that, It includes a fixed plate (1), a clamping device and a positioning plate (2). The clamping device and the positioning plate (2) are fixedly connected to the fixed plate (1) and are located on both sides of the fixed plate (1). The longitudinal beam mounting bracket has positioning holes, and the surface of the positioning plate (2) is provided with positioning protrusions (21) that cooperate with the positioning holes. The clamping device includes a cylinder (3) and three pressure block claw structures rotatably connected to the cylinder (3). The cylinder (3) is fixedly connected to the fixed plate (1). One end of the pressure block claw structure is connected to the cylinder (3), the middle is rotatably connected to the fixed plate (1), and the other end is provided with a pressure block for pressing the longitudinal beam mounting bracket. By extending and retracting the cylinder (3), the three pressure block claw structures move simultaneously to achieve pressing and releasing of the longitudinal beam mounting bracket.

2. The clamp for fixing the longitudinal beam mounting bracket according to claim 1, characterized in that, The clamping jaw structure includes a clamping jaw (32) and a first connecting member (31). The first connecting member (31) is fixedly connected to the front end of the cylinder (3). One end of the clamping jaw (32) is connected to the first connecting member (31), the middle part of the clamping jaw (32) is connected to the fixing plate (1), and the clamping block is set at the other end of the clamping jaw (32).

3. The clamp for fixing the longitudinal beam mounting bracket according to claim 2, characterized in that, The clamping jaw structure also includes a second connector (33) fixedly connected to the fixed plate (1). The second connector (33) is rotatably connected to the clamping jaw (32) via a second connecting pin. The second connector (33) is provided with a second guide groove (331), and the clamping jaw (32) is at least partially located in the second guide groove (331).

4. The clamp for fixing the longitudinal beam mounting bracket according to claim 3, characterized in that, The clamping jaw (32) is provided with a first guide groove (321), which cooperates with a second connecting pin, and the second connecting pin slides in the first guide groove (321).

5. The clamp for fixing the longitudinal beam mounting bracket according to claim 4, characterized in that, The first guide groove (321) includes an inclined section and a horizontal section, with the horizontal section located away from the cylinder (3).

6. The clamp for fixing the longitudinal beam mounting bracket according to claim 2, characterized in that, The clamp for fixing the longitudinal beam mounting bracket also includes a manual mechanism for pushing the first connector (31), the manual mechanism being connected to the first connector (31).

7. The clamp for fixing the longitudinal beam mounting bracket according to claim 6, characterized in that, The handle (41) is connected to the fixed plate (1) by a fourth connector (42). One end of the fourth connector (42) is rotatably connected to the handle (41), and the other end is rotatably connected to the fixed plate (1).

Images