A chassis compatible grip for automobile assembly

Abstract

This invention discloses a chassis-compatible mounting bracket for automobile assembly, comprising a horizontal hanger with a support movably connected to it. The support has a front hanger and a rear hanger at both ends. The bottom end of the front hanger has a positioning pin, the bottom end of the rear hanger has a support block, and the top end of the rear hanger has a position locking structure. The chassis-compatible mounting bracket of this invention is suitable for the co-production of front-mounted and non-load-bearing vehicles, reducing the number of planned mounting bracket loops and lowering costs.

Description

Technical Field

[0001] This invention belongs to the field of vehicle body clamps, specifically, this invention relates to a vehicle assembly chassis compatible clamp. Background Technology

[0002] Monocoque chassis: Also known as frameless or unibody construction, this type of chassis integrates the body and chassis into a single, integrated structure, without a separate frame. During chassis assembly, chassis cranes are needed to lift the body skirts for transport. Body-on-frame chassis: Also known as frame-type chassis, this type of chassis has a separate frame (chassis), with the body structure mounted on it. During chassis assembly, before the frame is fully assembled, chassis cranes need to lift the body skirts for mounting. After the frame assembly is complete, due to the increased curb weight, chassis cranes are needed to lift the entire frame assembly for transport.

[0003] Because there are significant differences in vehicle structure between unibody and non-unibody vehicles, the traditional production model requires two chassis lines or two types of chassis clamps for switching between coupling and chassis assembly due to the large differences in the support point position of the vehicle lifting and vehicle structure. However, using two sets of chassis clamps requires a large workshop area and production line layout, resulting in high investment costs for production line equipment.

[0004] Utility model patent with publication number CN 207087200U, published on March 13, 2018, discloses a body-in-white clamp entitled "A Body-in-White Clamp". This clamp includes a main frame, fixed claws connected to the main frame, and movable claws connected to and retractable relative to the fixed claws. However, this body-in-white clamp does not solve the aforementioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a chassis-compatible mounting bracket suitable for co-line production of both front-mounted and non-load-bearing vehicles, reducing the number of planned lifting loops, and lowering costs.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] The vehicle assembly chassis compatible mounting bracket includes a horizontal hanger with a support movably connected to it. The support has a front hanger and a rear hanger at both ends. The bottom end of the front hanger has a positioning pin, the bottom end of the rear hanger has a support block, and the top end of the rear hanger has a position locking structure.

[0008] The position locking structure includes a locking block, a locking plate on the side of the bracket, a locking groove at the end of the locking plate, and the locking block engaging with the locking groove; a connecting bracket is provided at the top of the rear boom, a mounting shaft is provided on the connecting bracket, the locking block is fixedly connected to the mounting shaft, a torsion spring is provided between one side of the connecting bracket and the locking block, a stop bar is fixedly connected to the locking block, the stop bar is parallel to the mounting shaft, and one end of the torsion spring abuts against the stop bar.

[0009] The rear boom is provided with support rods on both sides. The top of the support rod is fixedly connected to the bottom of the bracket, and the bottom of the support rod is connected to a sliding rod. The middle part of the rear boom is sleeved on the sliding rod.

[0010] The front boom is provided with a first support at its bottom end, and a first guide rail is provided on the second support. A first mounting plate is provided on the first guide rail, and a positioning pin is provided at the end of the first mounting plate. The rear boom is provided with a second support at its bottom end, and a second guide rail is provided on the second support. A second mounting plate is provided on the guide rail, and a support block is provided at the end of the second mounting plate.

[0011] The top of the support block is provided with a limiting block, and a positioning groove is provided between the limiting blocks. One end of the positioning groove is provided with a limiting groove, and the limiting groove is a trapezoidal structure.

[0012] The horizontal hanger is provided with a connecting rod at the top, and a movable wheel is provided at the top of the connecting rod. The horizontal hanger is also provided with a bearing seat, and a rotating shaft is connected to the bearing seat at the end of the bracket.

[0013] Both the first support and the second support are provided with adjustment plates on their sides, and the adjustment plates are provided with adjustment pins and multiple connection holes.

[0014] Both the first and second guide rails are provided with multiple positioning holes.

[0015] The positioning pin includes a pin seat and a pin head, and the top of the pin head has an arc-shaped structure.

[0016] The card block is equipped with a lever at the top.

[0017] The technical advantages of this invention are as follows: Using the automotive assembly chassis compatible clamp of this invention, the rear boom moves via a guide rod, allowing for X-axis spacing adjustment of the support block and positioning pin. After adjustment, the rear boom position is mechanically locked via a locking block and slot, making rear boom position switching convenient and highly stable, thus improving overall stability. The support block and positioning pin are movable on the guide rail and adjustable in the Y-axis position, making it suitable for co-production of load-bearing and non-load-bearing vehicles. It allows for the sharing of chassis clamps before and after frame assembly, and is suitable for production modes compatible with multiple platform vehicles, multiple wheelbase vehicles, and multiple support positions. It eliminates the need for two sets of chassis clamps to correspond to both vehicle types, saving clamp development and manufacturing costs, reducing the planning of clamp loops, and improving frame assembly efficiency. Attached Figure Description

[0018] This manual includes the following figures, which illustrate the following:

[0019] Figure 1 This is a structural schematic diagram of the automobile assembly chassis compatible mounting bracket of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the horizontal hanger of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the bracket of the present invention;

[0022] Figure 4 This is a schematic diagram of the position locking structure of the present invention;

[0023] Figure 5 This is a top view schematic diagram of the position locking structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the bottom end of the front boom of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the bottom end of the rear boom of the present invention.

[0026] The markings in the diagram are as follows: 1. Horizontal hanger; 11. Bracket; 12. Locking plate; 13. Slot; 14. Connecting rod; 15. Moving wheel; 16. Bearing seat; 17. Rotating shaft; 2. Front boom; 3. Rear boom; 31. Support rod; 32. Slide rod; 33. Connecting bracket; 34. Mounting shaft; 35. Locking block; 36. Torsion spring; 37. Stop bar; 38. Toggle bar; 4. Positioning pin; 41. First support; 42. First guide rail; 43. First mounting plate; 44. Pin seat; 45. Pin head; 5. Support block; 51. Second support; 52. Second guide rail; 53. Second mounting plate; 54. Limiting block; 55. Positioning groove; 56. Limiting groove; 6. Adjusting plate; 61. Adjusting pin; 62. Connecting hole; 63. Positioning hole. Detailed Implementation

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0028] like Figure 1 As shown, the vehicle assembly chassis compatible mounting bracket includes a horizontal hanger 1, on which a bracket 11 is movably connected. The bracket 11 has a front hanger 2 and a rear hanger 3 at its two ends, respectively. The bottom end of the front hanger 2 is provided with a positioning pin 4, the bottom end of the rear hanger 3 is provided with a support block 5, and the top end of the rear hanger 3 is provided with a position locking structure.

[0029] The movement of the support bracket 11 is powered by a rotary cylinder outside the gripper. The movement of the support bracket 11 allows the pair of brackets to open and close, moving the support block 5 and positioning pin 4 to the bottom of the vehicle body for normal lifting operations. The movement of the rear boom 3 on the slide bar 32 allows for adjustment in the X-direction of the vehicle body coordinate system and variation in the X-direction distance between the positioning pin 4 and the support block 5, thus adapting to vehicles with different wheelbases. The movement of the positioning pin 4 and the support block 5 on the guide rail allows for adjustment in the Y-direction of the vehicle body coordinate system, adapting to vehicles of different widths. The movement of the rear boom 3, positioning pin 4, and support block 5 can meet the lifting and hoisting requirements of different support points on different vehicle bodies, thus achieving the effect of co-line production of load-bearing and non-load-bearing vehicles. The horizontal hanger 1, support bracket 11, front boom 2, and rear boom 3 are all constructed from welded square tubing, resulting in low weight and low manufacturing cost.

[0030] like Figures 3 to 5 As shown, the position locking structure includes a locking block 35, a locking plate 12 on the side of the bracket 11, a locking groove 13 at the end of the locking plate 12, and the locking block 35 cooperating with the locking groove 13; a connecting bracket 33 is provided at the top of the rear boom 3, and an installation shaft 34 is provided on the connecting bracket 33, the locking block 35 is fixedly connected to the installation shaft 34, a torsion spring 36 is provided between one side of the connecting bracket 33 and the locking block 35, a stop bar 37 is fixedly connected to the locking block 35, the stop bar 37 is arranged parallel to the installation shaft 34, and one end of the torsion spring 36 abuts against the stop bar 37. In the above structure, the locking of the rear boom 3 is achieved through the cooperation of the slot 13 and the locking block 35. One end of the torsion spring 36 abuts against the stop lever 37 to apply force, while the other end extends into the connecting bracket 33. Therefore, the torsion spring 36 has an automatic reset function for the locking block 35, ensuring that the locking block 35 is always engaged with the slot 13 without external force. Under the elastic reset action of the torsion spring 36, the stop block is tightly engaged in the slot 13 and will not easily come out, thus achieving mechanical locking of the rear boom 3 and ensuring the stability of the rear boom 3. This ensures stability during the subsequent transportation of the vehicle body. Multiple slots 13 are designed, and the locking block 35 can switch positions between each slot 13, facilitating the adjustment of the position of the locking block 35 according to the vehicle model. This allows for adjustment of the distance between the support block 5 and the positioning pin 4, adapting to different vehicle body support points. Both the slot 13 and the block 35 are square structures. When they are fixed together, they have multiple surfaces in contact, ensuring reliable fixing stability. To prevent wear during the alignment and engagement of the two, rounded corners are provided at the end edges of the slot 13.

[0031] like Figures 1 to 3As shown, the rear boom 3 has support rods 31 on both sides. The top of the support rods 31 is fixedly connected to the bottom of the bracket 11, and the bottom of the support rods 31 is connected to a sliding rod 32. The middle part of the rear boom 3 is sleeved on the sliding rod 32. The sliding rod 32 provides a support point for the middle part of the rear boom 3, stabilizing the posture of the rear boom 3 and providing linear guidance for the position adjustment of the rear boom 3. The front boom 2 and the two support rods 31 stabilize the position of the sliding rod 32. The rear boom 3 can move axially on the sliding rod 32, reducing the moving resistance. The process of adjusting the distance between the rear boom 3 and the front boom 2 is smooth. One end of the sliding rod 32 passes through the support rod 31 and is fixedly connected to the front boom 2. It is set parallel to the horizontal hanger 1. The linear movement of the rear boom 3 is powered by an external cylinder of the gripper.

[0032] like Figure 6 and Figure 7 As shown, the front boom 2 has a first support 41 at its bottom end, a second support 51 with a first guide rail 42, a first mounting plate 43 on the first guide rail 42, and a positioning pin 4 at the end of the first mounting plate 43. The rear boom 3 has a second support 51 at its bottom end, a second guide rail 52 on the second support 51, a second mounting plate 53 on the guide rail, and a support block 5 at the end of the second mounting plate 53. The first mounting plate 43 engages with the first guide rail 42, and the second mounting plate 53 engages with the second guide rail 52. The positioning pin 4 moves linearly along the first mounting plate 43 on the first guide rail 42, and the support block 5 moves similarly. The movement of the first mounting plate 43 and the second mounting plate 53 is powered by an external cylinder of the gripper. When the positioning pin 4 and the support block 5 are in use, the first guide rail 42 and the second guide rail 52 are both horizontally positioned to ensure stable support.

[0033] like Figure 7 As shown, the top of the support block 5 is provided with a limiting block 54, and a positioning groove 55 is provided between the limiting blocks 54. One end of the positioning groove 55 is provided with a limiting groove 56, which has a trapezoidal structure. For non-load-bearing vehicles, the positioning groove 55 supports the frame beam, which is located between the limiting blocks 54, ensuring stability. For load-bearing vehicles, the positioning groove 55 supports the body skirt, and the limiting groove 56 can also limit the protrusions of the body skirt.

[0034] like Figure 2 As shown, the horizontal hanger 1 has a connecting rod 14 at its top, and a movable wheel 15 at the top of the connecting rod 14. The horizontal hanger 1 also has a bearing seat 16, and a rotating shaft 17 is connected to the bearing seat 16 at the end of the support 11. The movable wheel 15 is used for moving the gripper on the hoisting track. There are four movable wheels 15 to ensure the stability of the gripper. The support 11 rotates around the bearing seat 16 via the rotating shaft 17, reducing the rotational resistance of the rotating shaft 17 and realizing the unfolding or retracting clamping action of the support 11.

[0035] like Figure 6As shown, the locating pin 4 includes a pin seat 44 and a pin head 45, with the top of the pin head 45 having an arc-shaped structure. The arc-shaped design of the pin head 45 serves a guiding function and will not damage the vehicle body structure.

[0036] like Figure 6 and Figure 7 As shown, both the first support 41 and the second support 51 are provided with adjusting plates 6 on their sides. Adjusting plates 6 have adjusting pins 61 and multiple connecting holes 62. The bottom end of the adjusting pin 61 connects to the adjusting hole. Multiple adjusting holes are designed to change the position of the adjusting pin 61, allowing adjustment according to the body structure of different vehicle models to ensure accurate and stable positioning support for the vehicle body. The adjusting plate 6 has an L-shaped cross-section to ensure that the upper surface of the adjusting plate 6 is horizontal.

[0037] like Figure 6 and Figure 7 As shown, both the first guide rail 42 and the second guide rail 52 are provided with multiple positioning holes 63. The positioning holes 63 on the guide rails make full use of the installation position of the guide rails. The end of the mounting plate is offset from the guide rail in the vertical direction to ensure that the positioning holes 63 are unobstructed. Each positioning hole 63 corresponds to a support position, and the positioning is switched according to the body of different vehicle models to ensure the position adjustment accuracy of the gripper.

[0038] like Figure 4 and Figure 5 As shown, a lever 38 is provided on the top of the locking block 35. The lever 38 is located on the top of the locking block 35, and there are no other parts obstructing this position. The lever 38 is made of a bent round tube, which increases the lever arm of the locking block 35 on the mounting shaft 34, making it easy to manually or mechanically operate the lever 38 to unlock the position of the locking block 35. This allows the locking block 35 to be switched according to the vehicle model, thereby adjusting the distance between the positioning pin 4 and the support block 5.

[0039] The working principle of the chassis-compatible clamp for automobile assembly is as follows: The vehicle body moves to the underside of the clamp along the assembly conveyor line. After the chassis clamp is clamped and positioned, the clamp automatically adjusts according to the vehicle configuration requirements, automatically switching the positions of the clamp lifting positioning pin 4, the support block, and the rear boom 3. The bracket 11 rotates to move the support block 5 and the positioning pin 4 under the vehicle body. According to the position of the vehicle body support point, the position of the support block 5 and the positioning pin 4 on the guide rail is adjusted in the Y direction. The lever 38 is moved to rotate the locking block 35 by a certain angle. According to the vehicle body type, the locking block 35 is moved to the corresponding slot 13. Under the reset action of the torsion spring 36, the locking block 35 is engaged in the slot 13, forming a mechanical lock. That is, the distance between the rear boom 3 and the front boom 2 is adjusted in the X direction, so that the support block 5 and the positioning pin 4 are accurately aligned with the vehicle body support point. After the above structure is adjusted in place, the chassis clamp positioning and clamping mechanism automatically opens, allowing the positioning pin 4 and the support block to move under the vehicle body. Then, the frame beam or body skirt can be lifted by the support block 5 and the positioning pin 4, and the body can be unlocked in the Z direction so that the corresponding position of the body falls on the adjusting pin 61, thus ensuring the stability of the body lifting.

[0040] This automotive assembly chassis is compatible with a mounting bracket. The rear boom 3 moves via a guide rod 32, allowing for X-axis spacing adjustment of the support block 5 and positioning pin 4. After adjustment, the rear boom 3 is mechanically locked to the slot 13 via a locking block 35. The rear boom 3 position switching is convenient and highly stable, improving overall stability. The support block 5 and positioning pin 4 are movable on the guide rail and adjustable in the Y-axis, making it suitable for co-production of load-bearing and non-load-bearing vehicles. It allows for the sharing of chassis mounting brackets before and after frame assembly, making it suitable for production modes compatible with multiple platform vehicles, multiple wheelbase vehicles, and multiple support positions. It eliminates the need for two sets of chassis mounting brackets to correspond to both vehicle types, saving on bracket development and manufacturing costs, reducing the planning of mounting bracket loops, and improving frame assembly efficiency.

[0041] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A chassis-compatible clamp for automobile assembly, characterized in that: The system includes a horizontal hanger (1), on which a bracket (11) is movably connected. The bracket (11) has a front arm (2) and a rear arm (3) at its two ends. The bottom end of the front arm (2) has a positioning pin (4), and the bottom end of the rear arm (3) has a support block (5). The top end of the rear arm (3) has a position locking structure. The position locking structure includes a locking block (35), and the side of the bracket (11) has a locking plate (12). The end of the locking plate (12) has a slot (13), and the locking block (35) engages with the slot (13). The top end of the rear arm (3) has a connecting bracket (33). The connecting bracket (33) is provided with an installation shaft (34), and the locking block (35) is fixedly connected to the installation shaft (34). A torsion spring (36) is provided between one side of the connecting bracket (33) and the locking block (35). A stop bar (37) is fixedly connected to the locking block (35). The stop bar (37) is parallel to the installation shaft (34), and one end of the torsion spring (36) abuts against the stop bar (37). Support rods (31) are provided on both sides of the rear boom (3). The top end of the support rod (31) is fixedly connected to the bottom of the bracket (11), and a sliding rod (32) is connected to the bottom end of the support rod (31). The rear boom (3) The middle part is sleeved on the slide rod (32); the bottom end of the front boom (2) is provided with a first support (41), the first support (41) is provided with a first guide rail (42), the first guide rail (42) is provided with a first mounting plate (43), and the positioning pin (4) is provided at the end of the first mounting plate (43); the bottom end of the rear boom (3) is provided with a second support (51), the second support (51) is provided with a second guide rail (52), the guide rail is provided with a second mounting plate (53), and the support block (5) is provided at the end of the second mounting plate (53); the top of the support block (5) is provided with a limiting block (54), and the limiting block (54) is provided with a limiting block (54). A positioning groove (55) is provided between the two supports (41 and 51), and a limiting groove (56) is provided at one end of the positioning groove (55). The limiting groove (56) is a trapezoidal structure. A connecting rod (14) is provided at the top of the horizontal hanger (1). A moving wheel (15) is provided at the top of the connecting rod (14). A bearing seat (16) is also provided on the horizontal hanger (1). A rotating shaft (17) is connected to the bearing seat (16) at the end of the support (11). An adjusting plate (6) is provided on the side of both the first support (41) and the second support (51). An adjusting pin (61) is provided on the adjusting plate (6). A plurality of connecting holes (62) are provided on the adjusting plate (6).

2. The automotive assembly chassis compatible mounting bracket according to claim 1, characterized in that: The first guide rail (42) and the second guide rail (52) are each provided with multiple positioning holes (63).

3. The automotive assembly chassis compatible mounting bracket according to claim 1, characterized in that: The positioning pin (4) includes a pin seat (44) and a pin head (45), the top of which is an arc-shaped structure.

4. The automobile assembly chassis compatible mounting bracket according to claim 1, characterized in that: The top of the card block (35) is provided with a lever (38).

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