Special-shaped supporting pipe clamping mechanism for four-wheel vehicle body frame

Abstract

The utility model relates to a special-shaped supporting pipe clamping mechanism for a four-wheel vehicle body frame, which comprises an outer frame, the inner left side and the inner right side of the outer frame are respectively provided with a clamping mechanism, the lower ends of the clamping mechanisms are connected with sliding rods in a sliding mode, the sliding rods are fixedly connected with the outer frame, and meanwhile, the close sides of the two clamping mechanisms are respectively provided with a driving plate. Each driving plate is fixedly connected with the clamping mechanism on the same side through a connecting rod, and a screw I is in threaded connection with each driving plate, so that the outer frame is rotationally connected through restraining the screws I, and the guiding effect of the sliding rods on the clamping mechanisms and the linkage effect of the connecting rods are combined; the two clamping mechanisms can adjust the relative positions of the two clamping mechanisms on the horizontal layer according to needs in practice, so that the two ends of the special-shaped supporting pipe are clamped and fixed correspondingly, and it is guaranteed that the position of the special-shaped clamping pipe cannot deviate in the machining process.

Description

Technical Field

[0001] The utility model relates to the technical field of special-shaped support tube clamping mechanisms, in particular to a special-shaped support tube clamping mechanism for a four-wheel vehicle body frame. Background Art

[0002] A four-wheeled vehicle frame is a frame structure composed of multiple circular tubular parts. In practice, to reduce the number of processing steps and minimize the impact of joints on the overall frame's impact resistance, vehicle frames often use special-shaped support tubes to reduce the number of parts.

[0003] Therefore, for the vehicle body frame, whether the clamping process of the special-shaped support tube is important, the corresponding clamping mechanism will be used many times in the production process to clamp the special-shaped support tube to complete the remaining steps.

[0004] Most of the existing technical devices are dedicated to completing the clamping of special-shaped support tubes in one go, that is, through corresponding rotation and flexible structures, the angle of the clamping plate can fit the side end face of the special-shaped support tube as much as possible. Although this method has fewer operating steps, it is not suitable for parts with larger bending angles. In practice, the clamping plate cannot fit both side ends of the part with a larger bending angle at the same time, which makes it in an under-positioned state during the actual processing process.

[0005] Therefore, we believe that there is a need for a special-shaped support tube clamping mechanism for a four-wheel vehicle body frame that has a wider range of applications and can effectively and stably clamp a variety of special-shaped support tubes. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the utility model proposes a special-shaped support tube clamping mechanism for a four-wheel vehicle body frame, which has the advantages of strong adaptability and can still stably clamp special-shaped tubes with large bending angles. It solves the shortcomings of the existing technology device that is focused on one-time clamping and cannot adapt well to special-shaped support tubes with large bending angles.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A special-shaped support tube clamping mechanism for a four-wheel vehicle body frame includes an outer frame with a U-shaped structure projected on the vertical plane, and a clamping mechanism is respectively provided at the left and right ends of the inner side of the outer frame. A front-to-rear axial through hole is opened at the lower end of each clamping mechanism, a sliding rod is inserted into the through hole, and the two axial ends of each sliding rod are fixedly connected to the outer frame. A driving plate is respectively provided on the near side of the two clamping mechanisms, and each driving plate is fixedly connected to the clamping mechanism on the same side through a connecting rod. An internal threaded hole I is opened on each driving plate through the front and rear, a screw rod I is screwed in each internal threaded hole, and the screw rod I is rotatably connected to the outer frame.

[0009] Preferably, the clamping mechanism includes a support frame with a U-shaped structure projected on the vertical plane, and a clamping plate is respectively provided at the front and rear ends of the inner side of the support frame. An internal threaded hole II is opened through the front and rear ends of each clamping plate, and a screw rod II is screwed into the internal threaded hole II. In addition, the screw rod II is rotatably connected to the support frame. Each screw rod II is a bidirectional screw, and each screw rod II is screwed to the corresponding two clamping plates through the internal threaded hole II at the same time.

[0010] Preferably, a plurality of internal threaded holes II are provided on each of the splints from left to right, and a screw rod II is screwed into each of the internal threaded holes II.

[0011] Preferably, the axial end of each screw rod II is coaxially fixedly connected to a transmission wheel I, a transmission belt I is commonly sleeved on the outer side of adjacent transmission wheels I, and each transmission belt I is interference fit with the corresponding transmission wheel I.

[0012] Preferably, the two clamping plates in each clamping mechanism are respectively provided with an arc-shaped notch groove near their ends, and the two notch grooves in a single clamping mechanism are respectively fixedly connected with a rubber damping pad near their ends.

[0013] Preferably, each of the driving plates is provided with a plurality of internal threaded holes I arranged in parallel from left to right, and a screw rod I is threaded into each of the internal threaded holes I.

[0014] Preferably, the axial end of each screw rod I is coaxially fixedly connected to a transmission wheel II, a transmission belt II is commonly sleeved on the outer side of adjacent transmission wheels II, and each transmission belt II is interference fit with the corresponding transmission wheel II.

[0015] Preferably, the rotation directions of the external threads on the outer sides of the screw rods I corresponding to the two drive plates are completely opposite. When multiple screw rods I rotate in the same direction, the movement directions of the two drive plates are completely opposite. A transmission wheel III is provided on one side of each drive plate. The transmission wheel III is coaxially fixedly connected to the screw rod I screwed to the corresponding drive plate, and a transmission belt III is commonly sleeved on the outer sides of the two transmission wheels III, and the transmission belt III and the transmission wheel III are interference fit.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model cooperates with the screw rod and the internal threaded hole I to enable the driving plate to make forward and backward linear motion relative to the outer frame as needed. At this time, combined with the guiding effect of the slide rod on the clamping mechanism and the linkage effect of the connecting rod, the two clamping mechanisms can actually adjust their relative positions on the horizontal plane as needed, thereby clamping and fixing the two ends of the special-shaped support tube respectively, ensuring that the special-shaped clamping tube cannot be offset in the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the clamping mechanism and the drive plate of the utility model.

[0020] In the figure: 1. Outer frame; 2. Slide rod; 3. Screw rod I; 4. Clamping mechanism; 401. Clamping plate; 402. Support frame; 403. Screw rod II; 404. Through hole; 405. Transmission wheel I; 406. Transmission belt I; 407. Damping pad; 5. Transmission wheel III; 6. Transmission belt III; 7. Transmission belt II; 8. Transmission wheel II; 9. Drive plate; 10. Internal threaded hole I; 11. Connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] Please refer to Figure 1-2 A special-shaped support tube clamping mechanism for a four-wheel vehicle frame includes an outer frame 1 whose vertical plane projection is a U-shaped structure. In practice, the outer frame 1 can be regarded as a workbench. For ease of understanding, this application simplifies it to the outer frame 1.

[0024] Specifically, the device is provided with a clamping mechanism 4 at the left and right ends of the inner side of the outer frame 1, respectively, for respectively targeting the two ends of the special-shaped support tube, and limiting the entire support tube by limiting the two ends.

[0025] Specifically, the clamping mechanism 4 includes two clamping plates 401 arranged in front and back, which fix the end of the heterogeneous support tube by abutting, clamping and fixing.

[0026] Furthermore, the two clamping plates 401 in each clamping mechanism 4 are each provided with an arc-shaped notch groove near the end, which increases the contact area and wrapping degree between the device and the heterosexual support tube, thereby improving the position constraint capability of the heterosexual support tube.

[0027] At the same time, the two notched grooves in the single clamping mechanism 4 are fixedly connected to the near ends with a rubber damping pad 407. This can not only utilize the friction resistance of the rubber material itself, but also utilize the deformable characteristics of the rubber material to further increase the contact area with the special-shaped support tube.

[0028] Furthermore, in order to adapt to special-shaped support tubes of different sizes, the device has an internal threaded hole II running through the front and back of each clamping plate 401, and a screw rod II 403 is screwed into the internal threaded hole II. Therefore, after the screw rod II 403 is positionally constrained, the distance between the two clamping plates 401 in a single clamping mechanism 4 can be changed by rotating the screw rod II 403, so that the distance is adapted to the diameter of the special-shaped support tube.

[0029] Specifically, the clamping mechanism 4 further includes a support frame 402 having a U-shaped structure when projected on a vertical plane, and the screw rod II 403 is rotatably connected to the support frame 402 to thereby realize position constraint on the screw rod II 403 .

[0030] Furthermore, the constraint screw II 403 of this device is a bidirectional screw, and each screw II 403 is simultaneously screwed to the two splints 401 through the internal threaded hole II. This allows a single screw II 403 to simultaneously control its corresponding two splints 401 to move toward or away from each other when it rotates. This can quickly adjust the distance between the two splints 401 to a position that is compatible with the special-shaped support tube.

[0031] Furthermore, in order to prevent the splint 401 from rotating along with the screw Ⅱ 403 during its rotation, thereby rendering the screw Ⅱ 403 ineffective in adjusting the position of the splint 401, the device provides a plurality of internal threaded holes Ⅱ from left to right on each splint 401, and each internal threaded hole Ⅱ is threaded with a screw Ⅱ 403. Therefore, the mutual constraints of multiple screws Ⅱ 403 fully ensure that the splint 401 cannot rotate relative to the screw Ⅱ 403.

[0032] Furthermore, in order to avoid travel conflicts between screw Ⅱ 403 and clamping plate 401 caused by different rotation speeds of multiple screws, the device has a transmission wheel Ⅰ 405 coaxially fixedly connected to the axial end of screw Ⅱ 403, and a transmission belt Ⅰ 406 is commonly provided on the outer side of adjacent transmission wheels Ⅰ 405. At this time, by constraining the interference fit between each transmission belt Ⅰ 406 and the corresponding transmission wheel Ⅰ 405, it can be fully ensured that the multiple screws Ⅱ 403 in a single clamping mechanism 4 can always maintain the same direction and the same rotation speed.

[0033] It should be noted that the present invention provides a clamping mechanism 4 at each end of the special-shaped support tube to limit the position of the special-shaped support tube. Therefore, the two clamping mechanisms 4 in the device should be able to perform forward and backward linear motion relative to the outer frame 1.

[0034] Specifically, the device is provided with a front-to-rear axial through hole 404 at the lower end of each clamping mechanism 4, that is, each supporting frame 402, and a sliding rod 2 is inserted into the through hole 404. By constraining the two axial ends of each sliding rod 2 to be fixedly connected to the outer frame 1, a sliding connection between the clamping mechanism 4 and the outer frame 1 is achieved, so that the supporting mechanism can slide relative to the outer frame 1.

[0035] Specifically, the device is provided with a driving plate 9 on each side close to the two clamping mechanisms 4, and each driving plate 9 is fixedly connected to the clamping mechanism 4 on the same side through a connecting rod 11, so that the movement of the driving plate 9 can drive the clamping mechanism 4 to move.

[0036] Therefore, this device has an internal threaded hole II running through each drive plate 9 in the front and back, and a screw rod Ⅰ3 is screwed into each internal threaded hole, and the screw rod Ⅰ3 is rotatably connected to the outer frame 1. At this time, by rotating the screw rod Ⅰ3, the drive plate 9 can be moved and the position of the drive plate 9 can be kept adapted to the shape of the special-shaped support tube.

[0037] Furthermore, the device constrains that a plurality of internal threaded holes Ⅰ10 are arranged in parallel from left to right on the driving plate 9, and a screw rod Ⅰ3 is screwed into each internal threaded hole Ⅰ10, so that the multiple screw rods Ⅰ3 are mutually constrained to ensure that the driving plate 9 cannot rotate relative to the screw rod Ⅰ3, and the screw rod Ⅰ3 can drive the driving plate 9 to move during rotation.

[0038] Furthermore, in order to avoid travel conflicts between the screw Ⅰ3 and the drive plate 9 caused by inconsistent rotational speeds of multiple screws Ⅰ3, the device has a transmission wheel Ⅱ8 coaxially fixedly connected to the axial end of the screw Ⅰ3, and a transmission belt Ⅱ7 is commonly provided on the outer side of adjacent transmission wheels Ⅱ8. By constraining the interference fit between each transmission belt Ⅱ7 and the corresponding transmission wheel Ⅱ8, it is fully guaranteed that the multiple screws Ⅰ3 corresponding to a single drive plate 9 can rotate synchronously.

[0039] Furthermore, in order to quickly adjust the positions of the two drive plates 9 to match the shape of the special-shaped support tube, this device constrains the rotation directions of the external threads on the outside of the screw rods Ⅰ3 corresponding to the two drive plates 9 to be completely opposite. Therefore, when multiple screw rods Ⅰ3 keep rotating in the same direction, the movement directions of the two drive plates 9 are completely opposite, that is, the two drive plates 9 move toward or away from each other.

[0040] Therefore, the device is provided with a transmission wheel III5 on one side of each driving plate 9, and the transmission wheel III5 is coaxially fixedly connected to the screw rod I3 screwed to the corresponding driving plate 9, and a transmission belt III6 is commonly sleeved on the outer side of the two transmission wheels III5. By constraining the interference fit between the transmission belt III6 and the transmission wheel III5, multiple screw rods I3 can maintain the same movement trend.

[0041] It should be emphasized that although the axial ends of screw Ⅰ3 and screw Ⅱ403 of the present invention are not described as having a driving mechanism, in practice, in order to make them rotate, it is necessary to set up a corresponding driving mechanism, such as a handle, a driving motor and other structures. This utility model omits them only for the convenience of explanation.

[0042] During actual use, the utility model:

[0043] First, the user uses the drive mechanism corresponding to the screw rod I3 to drive one of the screw rods I3 to rotate. At this time, under the action of the transmission belt II7 and the transmission belt III6, the multiple screw rods keep rotating synchronously, and the two drive plates 9 move towards or away from each other.

[0044] Afterwards, the driving plate 9 is continuously moved until the position of the driving plate 9 matches the shape of the special-shaped support tube, and the two ends of the special-shaped support tube are respectively placed between the two clamping mechanisms 4;

[0045] Finally, the driving mechanisms corresponding to the two screw rods II 403 are turned on to make the two clamps move toward each other, thereby achieving the clamping and fixing of the special-shaped support tube by the clamping plate 401.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special-shaped support tube clamping mechanism for a four-wheel vehicle frame, characterized in that: It comprises an outer frame (1) having a U-shaped structure when projected in a vertical plane, and a clamping mechanism (4) is respectively arranged at the left and right ends of the inner side of the outer frame (1); A front-to-rear axial through hole (404) is formed at the lower end of each clamping mechanism (4), a sliding rod (2) is inserted into the through hole (404), and two axial ends of each sliding rod (2) are fixedly connected to the outer frame (1); A driving plate (9) is respectively provided on the near side of the two clamping mechanisms (4), and each driving plate (9) is fixedly connected to the clamping mechanism (4) on the same side via a connecting rod (11); Each of the driving plates (9) is provided with an internal threaded hole I (10) extending through the front and rear sides, and a screw rod I (3) is threadedly connected in each internal threaded hole, and the screw rod I (3) is rotatably connected to the outer frame (1).

2. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 1, characterized in that: The clamping mechanism (4) comprises a support frame (402) having a U-shaped structure when projected in a vertical plane, and a clamping plate (401) is respectively arranged at the front and rear ends of the inner side of the support frame (402); Each of the clamping plates (401) is provided with an internal threaded hole II extending through the front and rear sides, a screw rod II (403) is threadedly connected to the internal threaded hole II, and the screw rod II (403) is rotatably connected to the support frame (402); Each of the screw rods II (403) is a bidirectional screw rod, and each screw rod II (403) is screwed to the corresponding two clamping plates (401) through the internal threaded hole II.

3. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 2, characterized in that: A plurality of internal thread holes II are formed on each of the clamping plates (401) from left to right, and a screw rod II (403) is threadedly connected in each of the internal thread holes II.

4. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 3, characterized in that: The axial end of each screw rod II (403) is coaxially fixedly connected to a transmission wheel I (405), and a transmission belt I (406) is commonly sleeved on the outer side of adjacent transmission wheels I (405), and each transmission belt I (406) is interference fit with the corresponding transmission wheel I (405).

5. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 2, characterized in that: The two clamping plates (401) in each of the clamping mechanisms (4) are each provided with a notch groove with an arc-shaped structure at the near end thereof, and a damping pad (407) made of rubber material is respectively fixedly connected to the near end of the two notch grooves in a single clamping mechanism (4).

6. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 1, characterized in that: A plurality of internal thread holes I (10) are arranged in parallel from left to right on each of the driving plates (9), and a screw rod I (3) is threadedly connected in each of the internal thread holes I (10).

7. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 6, characterized in that: The axial end of each screw rod I (3) is coaxially fixedly connected to a transmission wheel II (8), and a transmission belt II (7) is commonly sleeved on the outer side of adjacent transmission wheels II (8), and each transmission belt II (7) is interference fit with the corresponding transmission wheel II (8).

8. The special-shaped support tube clamping mechanism for a four-wheel vehicle frame according to claim 6, characterized in that: The external threads on the outer sides of the screw rods Ⅰ (3) corresponding to the two drive plates (9) rotate in completely opposite directions. When the multiple screw rods Ⅰ (3) rotate in the same direction, the movement directions of the two drive plates (9) are completely opposite. A transmission wheel III (5) is respectively arranged on one side of each of the driving plates (9), and the transmission wheel III (5) is coaxially fixedly connected to a screw rod I (3) screwed to the corresponding driving plate (9), and a transmission belt III (6) is commonly sleeved on the outer sides of the two transmission wheels III (5), and the transmission belt III (6) and the transmission wheel III (5) are interference fit.

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