Clamp

Abstract

The utility model relates to a clamp. The clamp comprises a fixing frame; the first clamping mechanism comprises a first lead screw, a first clamping frame and a second clamping frame, the first clamping frame and the second clamping frame are both in threaded connection with the first lead screw, and the first lead screw and the fixing frame are rotationally arranged relative to each other; the second clamping mechanism comprises a second lead screw, a third clamping frame and a fourth clamping frame, the third clamping frame and the fourth clamping frame are both in threaded connection with the second lead screw, the second lead screw and the fixing frame are rotationally arranged relatively, and the length direction of the second lead screw is perpendicular to the length direction of the first lead screw; the transmission part is connected with the first screw rod and the second screw rod; the first motor is connected with the first lead screw so as to drive the first lead screw and the second lead screw to synchronously rotate relative to the fixing frame, and the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame are gathered or dispersed.

Description

Technical Field

[0001] The present disclosure relates to the field of terminal technology, and in particular to a clamp. Background Art

[0002] The flywheel shaft is an important part of the engine, mainly used to balance and store the engine's kinetic energy. Conventionally, in the process of connecting the flywheel shaft and the crankshaft, a special fixing fixture is required to fix the flywheel shaft. However, the current fixing fixture can only position a flywheel shaft of a single specification, and different engines usually have flywheel shafts of different models and specifications. Obviously, the fixing fixture cannot flexibly adapt to flywheel shafts of different specifications, which is not conducive to reducing production costs. Utility Model Content

[0003] The present disclosure provides a clamp to solve the deficiencies in the related art.

[0004] According to an embodiment of the present disclosure, there is provided a clamp, comprising:

[0005] Fixed frame;

[0006] A first clamping mechanism, the first clamping mechanism comprising a first screw rod, a first clamping frame and a second clamping frame, the first clamping frame and the second clamping frame are both threadedly connected to the first screw rod, and the first screw rod and the fixing frame are arranged to rotate relative to each other;

[0007] A second clamping mechanism, wherein the second clamping mechanism comprises a second screw rod, a third clamping frame and a fourth clamping frame, wherein the third clamping frame and the fourth clamping frame are both threadedly connected to the second screw rod, the second screw rod and the fixing frame are relatively rotatably arranged, and the length direction of the second screw rod is perpendicular to the length direction of the first screw rod;

[0008] A transmission part, the transmission part connecting the first screw rod and the second screw rod;

[0009] A first motor is connected to the first screw rod to drive the first screw rod and the second screw rod to rotate synchronously relative to the fixed frame, and the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame are gathered or dispersed.

[0010] Optionally, the transmission part includes a worm wheel and a worm meshing with the worm wheel, and one of the worm wheel and the worm is fixedly connected to the first screw rod, and the other is fixedly connected to the second screw rod.

[0011] Optionally, the worm is connected to the first screw, the worm wheel is connected to the second screw, the worm is located between the first clamping frame and the second clamping frame, and the worm wheel is located between the third clamping frame and the fourth clamping frame.

[0012] Optionally, the fixing frame includes a groove, and the second screw rod is rotatably disposed in the groove relative to the fixing frame.

[0013] Optionally, it further includes a track groove fixedly connected to the fixing frame, and the first screw rod is rotatably disposed in the track groove relative to the fixing frame.

[0014] Optionally, the fixing frame includes a bottom plate and a frame fixedly connected to the bottom plate, and the frame is fixedly connected to the track groove;

[0015] The groove is formed by being recessed inward from the surface of the frame.

[0016] Optionally, the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame respectively include a slider and a clamping block fixedly connected to the slider, the slider is threadedly connected to the first screw rod or the second screw rod, and the clamping block is used to support the workpiece.

[0017] Optionally, it further includes a receiving platform, which is fixedly connected to the fixing frame, the receiving platform includes a socket, and the top projection of the receiving platform is circular.

[0018] Optionally, it also includes a lifting mechanism, which includes a bracket, a movable rod, a second motor and an adsorption assembly, the bracket is connected to the fixed frame, the second motor is fixed relative to the bracket, the second motor is connected to the movable rod, and the movable rod is connected to the adsorption assembly.

[0019] Optionally, the adsorption assembly includes a connecting rod, a fixed plate, an air pump and a suction cup, the fixed plate is connected to the connecting rod, the connecting rod is connected to the movable rod, the air pump is fixedly arranged on the first side of the fixed plate and partially penetrates the fixed plate, the suction cup is connected to the air pump, and the suction cup is located on the second side of the fixed plate.

[0020] Optionally, the fixing plate includes an arc-shaped avoidance groove, and a plurality of air pumps are arranged in an arc shape.

[0021] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0022] It can be seen from the above embodiments that in the present disclosure, the first motor can drive the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame to move toward the middle for gathering, and drive the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame to move away from the middle for dispersion, so that the size of the clamping space formed by the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame can be adjusted, so as to match flywheel shafts of different specifications and sizes, which is beneficial to reducing production costs.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 The figure is a schematic diagram of a process of clamping a flywheel shaft with a clamp according to an exemplary embodiment.

[0026] Figure 2 The figure is a schematic diagram showing a state in which a clamp clamps a flywheel shaft according to an exemplary embodiment.

[0027] Figure 3 yes Figure 1 Partial schematic diagram of the middle fixture.

[0028] Figure 4 It is a partial schematic diagram of a material lifting structure according to an exemplary embodiment. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0031] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0032] Figure 1 is a schematic diagram showing a process of clamping a flywheel shaft with a clamp according to an exemplary embodiment. Figure 2 is a schematic diagram showing a state in which a fixture clamps a flywheel shaft according to an exemplary embodiment. Figure 3 yes Figure 1 A partial schematic diagram of the clamp. Figure 1-Figure 3 As shown, the clamp includes a fixed frame 1, a first clamping mechanism 2, a second clamping mechanism 3, a transmission part 4 and a first motor 5. The fixed frame 1 is mainly used to fix the clamp as a whole to equipment such as a machine tool or a workbench. The first clamping mechanism 2 includes a first screw rod 21, a first clamping frame 22 and a fourth clamping frame 33. The first clamping frame 22 and the fourth clamping frame 33 are respectively threadedly connected to the first screw rod 21. The first screw rod 21 is relatively rotatably arranged with the fixed frame 1, that is, the first screw rod 21 can be rotatably connected with the fixed frame 1, or can be relatively rotated with the fixed frame 1 through other brackets. Based on this, the first clamping frame 22 and the fourth clamping frame 33 are moved relative to the first screw rod 21 in the length direction of the first screw rod 21 by utilizing the rotation of the first screw rod 21 relative to the fixed frame 1.

[0033] The second clamping mechanism 3 includes a second screw rod 31, a third clamping frame 32 and a fourth clamping frame 33. The third clamping frame 32 and the fourth clamping frame 33 are respectively threadedly connected to the second screw rod 31. The second screw rod 31 is arranged to rotate relative to the fixed frame 1, that is, the second screw rod 31 can be rotatably connected to the fixed frame 1, or can be relatively rotated with the fixed frame 1 through other brackets. Based on this, the third clamping frame 32 and the fourth clamping frame 33 are moved relative to the second screw rod 31 in the length direction of the second screw rod 31 by rotating the second screw rod 31 relative to the fixed frame 1. The length direction of the first screw rod 21 is perpendicular to the length direction of the second screw rod 31, so that the side-by-side direction of the first clamping frame 22 and the second clamping frame 23 is perpendicular to the side-by-side direction of the third clamping frame 32 and the fourth clamping frame 33.

[0034] The transmission part 4 connects the first screw rod 21 and the second screw rod 31, and the first motor 5 is connected to the first screw rod 21. Through the design of the transmission part 4, the power output by the first motor 5 can be transmitted to the first screw rod 21, and further output to the second screw rod 31 through the transmission part 4, so that the first screw rod 21 and the second screw rod 31 can be driven by the same first motor 5 to rotate synchronously relative to the fixed frame 1, and at the same time, the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33 can move synchronously. Moreover, by reasonably designing the rotation direction of the first screw rod 21, the rotation direction of the second screw rod 31, the relative rotation direction of the first clamping frame 22 and the first screw rod 21, the relative rotation direction of the second clamping frame 23 and the first screw rod 21, the relative rotation direction of the third clamping frame 32 and the second screw rod 31, and the relative rotation direction of the fourth clamping frame 33 and the second screw rod 31, when the first motor 5 outputs power, the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33 can be gathered together or dispersed. For example, as Figure 3 As shown, the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33 can all move toward the middle to gather, and then the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33 can disperse when they move away from the middle. In this way, the size of the clamping space formed by the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33 can be adjusted to match flywheel shafts of different specifications and sizes, which is beneficial to reducing production costs.

[0035] In some embodiments, the transmission part 4 may include a worm wheel 41 and a worm 42 meshing with the worm wheel 41. Figure 3 As shown, the worm wheel 41 is fixedly connected to the second screw rod 31, and the worm 42 is fixedly connected to the first screw rod 21, so that on the one hand, the power transmission between the first screw rod 21 and the second screw rod 31 can be realized through the meshing between the worm wheel 41 and the worm 42, and on the other hand, the power transmission direction can be changed to realize the vertical setting of the length direction between the first screw rod 21 and the second screw rod 31. Among them, the worm wheel 41 and the second screw rod 31 can be independent parts, and then fixedly connected with the help of other parts, or the worm wheel 41 can be a part of the second screw rod 31; similarly, the worm 42 and the first screw rod 21 can be independent parts, and then fixedly connected with the help of other parts, or the worm 42 can be a part of the first screw rod 21.

[0036] Here, the worm wheel 41 is fixedly connected to the second screw rod 31, and the worm 42 is fixedly connected to the first screw rod 21 as an example for explanation. In other embodiments, the worm wheel 41 is fixedly connected to the first screw rod 21, and the worm 42 is fixedly connected to the second screw rod 31. The specific connection method can refer to the above embodiment, which will not be repeated here. In some other embodiments, the transmission part 4 can also be implemented by other transmission parts such as bevel gears.

[0037] In the embodiment provided by the present disclosure, the worm 42 can be located between the first clamping frame 22 and the second clamping frame 23, and the worm wheel 41 can be located between the third clamping frame 32 and the fourth clamping frame 33. Based on this, the transmission part 4 can be basically located at the overlapped position of the projection of the first screw rod 21 and the second screw rod 31, which is beneficial to the stability of the clamp as a whole.

[0038] In some embodiments, the fixing frame 1 may include a protruding mounting seat, and the relative rotation setting between the fixing frame 1 and the second screw rod 31 is realized by the rotation connection between the mounting seat and the second screw rod 31; in other embodiments, such as Figure 3 As shown, the fixing frame 1 may include a groove 11, and the second screw rod 31 is rotatably arranged in the groove 11 relative to the fixing frame 1, so that the second screw rod 31 is accommodated by the groove 11, which is beneficial to reducing the overall height of the clamp, thereby reducing the clamp's requirements for assembly space.

[0039] Furthermore, the fixture also includes a track groove 6 fixedly connected to the fixing frame 1, and the first screw rod 21 is rotatably arranged in the track groove 6 relative to the fixing frame 1, so as to realize the vertical arrangement between the first screw rod 21 and the second screw rod 31. The fixing frame 1 may include a bottom plate 12 and a frame 13 fixedly connected to the bottom plate 12, the frame 13 is fixedly connected to the track groove 6, the groove 11 may be formed by being recessed inward from the surface of the frame 13, and a mounting hole may be arranged on the bottom plate 12, through which the fixture is mounted to the workshop equipment or the workbench. The arrangement of the frame 13 is conducive to reducing the weight of the fixture and facilitating the movement of the fixture.

[0040] In the above-mentioned embodiments, the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33 respectively include a slider and a clamping block fixedly connected to the slider, the slider is threadedly connected to the first screw rod 21 or the second screw rod 31, and the clamping block is used to hold the workpiece. For example, the first clamping frame 22 includes a slider 221 and a clamping block 222 connected to the slider 221, the slider 221 is threadedly connected to the first screw rod 21, so that when the first screw rod 21 rotates relative to the fixed frame 1, the slider 221 drives the clamping block 222 to move relative to the first screw rod 21, so that the clamping block 222 and the workpiece are moved closer or farther away from each other, and the workpiece is clamped and unlocked. Among them, the clamping block 222 can be extended upward from the slider 221 and then bent, and the whole can be set in an L-shape, so that it can better contact with the surface of the workpiece, such as contacting with the flywheel of the flywheel shaft, to improve the stability and convenience of clamping and positioning. The above description is made by taking the first clamping frame 22 as an example. The second clamping frame 23 , the third clamping frame 32 and the fourth clamping frame 33 may be implemented with reference to the first clamping frame 22 , and will not be described one by one here.

[0041] In each of the above embodiments, the clamp further includes a receiving platform 7, and the receiving platform 7 is fixedly connected to the fixing frame 1. For example, the receiving platform 7 can be directly fixedly connected to the fixing frame 1, or the receiving platform 7 can be indirectly fixedly connected to the fixing frame 1 with the aid of other parts. The receiving platform 7 includes a socket 71, and the receiving platform 7 is circular in top view. In this way, the receiving platform 7 can be adapted to the shaft body of the flywheel shaft through the socket 71 to achieve the positioning of the flywheel shaft. The receiving platform 7, which is circular in top view, can better match the wheel body shape of the flywheel shaft and has good receiving performance.

[0042] In the above embodiments, Figure 4 As shown, the clamp may also include a lifting mechanism 8, through which the flywheel shaft can be easily and quickly assembled and disassembled, which is conducive to improving production efficiency. The lifting mechanism 8 includes a bracket 81, a movable rod 82, a second motor 83 and an adsorption assembly 84. The bracket 81 is connected to the fixed frame 1, the second motor 83 is fixedly arranged relative to the bracket 81, and the movable rod 82 is connected to the second motor 83. The movable rod 82 can be driven to move by the second motor 83, and the movable rod 82 is connected to the adsorption assembly 84, so that the adsorption assembly 84 can be driven to move toward the workpiece to adsorb the workpiece and transport the workpiece to the receiving table 7, and then the workpiece is clamped by the first clamping frame 22, the second clamping frame 23, the third clamping frame 32 and the fourth clamping frame 33.

[0043] For example, the bracket 81 may be a frame structure, and the second motor 83 may be fixedly disposed in the frame structure, thereby enhancing the protection of the second motor 83. In some embodiments, the movable rod 82 may be directly connected to the adsorption assembly 84, or in other embodiments, the movable rod 82 may be indirectly connected to the adsorption assembly 84 through other parts.

[0044] In the embodiment provided by the present disclosure, the adsorption assembly 84 includes a connecting rod 841, a fixed plate 842, an air pump 843 and a suction cup 844, the fixed plate 842 is connected to the connecting rod 841, and the connecting rod 841 is connected to the movable rod 82, so that when the second motor 83 outputs power, the power can be transmitted to the connecting rod 841 through the movable rod 82, thereby driving the connecting rod 841 and the fixed plate 842 to move. The air pump 843 can be fixedly connected to the first side of the fixed plate 842, and a part of the air pump 843 can penetrate the fixed plate 842, and the suction cup 844 is located on the second side of the fixed plate 842, and the first side and the second side are arranged, and the suction cup 844 is connected to the air pump 843, so that negative pressure can be generated by the air pump 843 later, so that the suction cup 844 adsorbs the workpiece to achieve the grasping of the workpiece, and the power output by the second motor 83 can further transport the workpiece to the receiving table 7 or other assembly positions.

[0045] The fixing plate 842 may include an arc-shaped avoidance groove 8431, through which the part of the workpiece protruding from the suction cup 844 can be avoided when the suction cup 844 adsorbs the workpiece, thereby avoiding interference. The plurality of air pumps 843 are arranged in an arc shape, so that the suction cup 844 can also be arranged in an arc shape, which is conducive to matching the wheel body shape of the flywheel shaft, thereby improving the adsorption strength.

[0046] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0047] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A clamp, characterized in that: include: Fixed frame; A first clamping mechanism, the first clamping mechanism comprising a first screw rod, a first clamping frame and a second clamping frame, the first clamping frame and the second clamping frame are both threadedly connected to the first screw rod, and the first screw rod and the fixing frame are arranged to rotate relative to each other; A second clamping mechanism, wherein the second clamping mechanism comprises a second screw rod, a third clamping frame and a fourth clamping frame, wherein the third clamping frame and the fourth clamping frame are both threadedly connected to the second screw rod, the second screw rod and the fixing frame are relatively rotatably arranged, and the length direction of the second screw rod is perpendicular to the length direction of the first screw rod; A transmission part, the transmission part connecting the first screw rod and the second screw rod; A first motor is connected to the first screw rod to drive the first screw rod and the second screw rod to rotate synchronously relative to the fixed frame, and the first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame are gathered or dispersed.

2. The clamp according to claim 1, characterized in that: The transmission part includes a worm wheel and a worm meshing with the worm wheel. One of the worm wheel and the worm is fixedly connected to the first screw rod, and the other is fixedly connected to the second screw rod.

3. The clamp according to claim 2, characterized in that: The worm is connected to the first screw, the worm wheel is connected to the second screw, the worm is located between the first clamping frame and the second clamping frame, and the worm wheel is located between the third clamping frame and the fourth clamping frame.

4. The clamp according to claim 1, characterized in that: The fixing frame comprises a groove, and the second screw rod is rotatably disposed in the groove relative to the fixing frame.

5. The clamp according to claim 4, characterized in that: It also includes a track groove fixedly connected to the fixing frame, and the first screw rod is rotatably arranged in the track groove relative to the fixing frame.

6. The clamp according to claim 5, characterized in that: The fixing frame comprises a bottom plate and a frame fixedly connected to the bottom plate, and the frame is fixedly connected to the track groove; The groove is formed by being recessed inward from the surface of the frame.

7. The clamp according to claim 1, characterized in that: The first clamping frame, the second clamping frame, the third clamping frame and the fourth clamping frame respectively include a slider and a clamping block fixedly connected to the slider, the slider is threadedly connected to the first screw rod or the second screw rod, and the clamping block is used to support the workpiece.

8. The clamp according to claim 1, characterized in that: It also includes a receiving platform, which is fixedly connected to the fixing frame. The receiving platform includes a socket, and the top projection of the receiving platform is circular.

9. The clamp according to claim 1, characterized in that: It also includes a lifting mechanism, which includes a bracket, a movable rod, a second motor and an adsorption assembly. The bracket is connected to the fixed frame, the second motor is fixed relative to the bracket, the second motor is connected to the movable rod, and the movable rod is connected to the adsorption assembly.

10. The clamp according to claim 9, characterized in that: The adsorption assembly includes a connecting rod, a fixed plate, an air pump and a suction cup, the fixed plate is connected to the connecting rod, the connecting rod is connected to the movable rod, the air pump is fixedly arranged on the first side of the fixed plate and partially penetrates the fixed plate, the suction cup is connected to the air pump, and the suction cup is located on the second side of the fixed plate.

11. The clamp according to claim 10, characterized in that: The fixing plate comprises an arc-shaped avoidance groove, and a plurality of air pumps are arranged in an arc shape.

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