Self-locking clamp device

Abstract

The utility model relates to the technical field of clamps, in particular to a self-locking clamp device. Comprising a fixing plate, a rotating disc is rotatably mounted at the top of the fixing plate, a U-shaped support is fixedly mounted at the top of the rotating disc, a first mounting plate is fixedly mounted at the top of the U-shaped support, and a hydraulic cylinder is fixedly mounted at the bottom of the first mounting plate; an output rod of the hydraulic cylinder slidably penetrates through the first mounting plate and is fixedly provided with a second mounting plate, clamping blocks are arranged on one side of the first mounting plate and one side of the second mounting plate, the two clamping blocks are matched with each other, a round hole is formed in the rotating disc in a penetrating mode, a rotating shaft rotatably penetrates through the round hole and is fixed to the top of a fixing plate, and the fixing plate is fixed to the top of the rotating disc. An annular groove is formed in the inner wall of the round hole. By means of the simple rotation adjusting structure, the opening direction of the clamp can be conveniently and rapidly adjusted, then rotation adjustment can be conveniently conducted on a clamped mechanical part, and subsequent machining operation of the mechanical part is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a self-locking clamp device. Background Technique

[0002] In the process of machining, it is often necessary to use a clamp device to clamp and fix the mechanical parts to be machined, so as to facilitate the machining operation. The existing clamps can be mainly divided into screw and hydraulic drive methods. The hydraulic drive clamp is widely used because of its advantages of firm clamping, fast action, and convenience in clamping small and large mechanical parts. A kind of adjustable self-locking strong clamp for grooves or holes disclosed in the prior art with the authorization announcement number of CN212552804U includes a connecting seat, an eccentric camshaft, a base plate, a rotating shaft, a pressing rod and an adjusting pressing head. A connecting seat is arranged at the bottom of the base plate, a pressing rod is sleeved on the base plate, and an eccentric camshaft and a rotating shaft are arranged between the pressing rod and the base plate. An adjusting pressing head is arranged at the outer end of the pressing rod; an installation part is arranged at one end of the pressing rod, a base plate is arranged inside the installation part, a first rotating shaft hole and an adjusting long hole are arranged on the side wall of the installation part, the rotating shaft hole penetrates through the rotating shaft, and the adjusting long hole penetrates through the eccentric camshaft; a second rotating shaft hole and an eccentric wheel are arranged on the base plate, the rotating shaft penetrates through the second rotating shaft hole, the rotation center of the eccentric wheel is eccentrically arranged, and the eccentric camshaft is arranged at the rotation center; the device has a simple and light structure and can realize functions of fast, strong, adaptive and self-locking.

[0003] However, it is found in the use of the existing self-locking clamp device that it is not convenient to quickly adjust the opening orientation of the clamp, resulting in inconvenience in rotating and adjusting the clamped mechanical parts, which brings a lot of trouble to the subsequent machining operation of the mechanical parts. Content of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a self-locking clamp device, which is convenient for quickly adjusting the opening orientation of the clamp, convenient for rotating and adjusting the clamped mechanical parts, and convenient for the subsequent machining operation of the mechanical parts, and solves the problems put forward in the above background technique.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: A self-locking clamp device, including a fixed plate, a turntable is rotatably installed on the top of the fixed plate, a U-shaped bracket is fixedly installed on the top of the turntable, a first mounting plate is fixedly installed on the top of the U-shaped bracket, a hydraulic cylinder is fixedly installed on the bottom of the first mounting plate, the output rod of the hydraulic cylinder slidably penetrates through the first mounting plate and is fixedly installed with a second mounting plate, clamping blocks are arranged on one side of the first mounting plate and the second mounting plate respectively, the two clamping blocks are adapted to each other, a circular hole penetrates through the turntable, a rotating shaft rotatably penetrates through the circular hole, the rotating shaft is fixed on the top of the fixed plate, an annular groove is formed on the inner wall of the circular hole, a gear is rotatably installed in the annular groove, the gear is fixedly sleeved on the rotating shaft, a rectangular groove is formed on one side inner wall of the annular groove, an arc-shaped tooth block is slidably installed in the rectangular groove, one end of the arc-shaped tooth block extends into the annular groove and meshes with the gear, a first lead screw is rotatably installed on the turntable, and the first lead screw is threadedly connected with the arc-shaped tooth block.

[0006] In order to facilitate adaptation to different mechanical components:

[0007] As a further improvement of the above technical solution: The first mounting plate and the second mounting plate both further include clamping grooves, the two clamping grooves are respectively formed on the sides of the first mounting plate and the second mounting plate close to each other, a connecting block is slidably installed in the clamping groove, the connecting block is fixed at one end of the corresponding clamping block, a rectangular through hole penetrates through one side inner wall of the clamping groove, a clamping plate slidably penetrates through the rectangular through hole, the clamping plate is fixed on the corresponding connecting block, a circular groove is formed on one side inner wall of the rectangular through hole, an internally threaded cylinder is slidably installed in the circular groove, the internally threaded cylinder slidably penetrates through the corresponding clamping plate, a second lead screw is threadedly installed in the internally threaded cylinder, one end of the second lead screw extends out of the internally threaded cylinder, a first bevel gear is fixedly sleeved on the second lead screw, a rotating rod is arranged on both sides of the first mounting plate and the second mounting plate away from each other, one end of the rotating rod extends into the corresponding circular groove and is provided with a second bevel gear, and the second bevel gear meshes with the first bevel gear.

[0008] The beneficial effect of this improvement is that by setting like this, it is convenient to quickly install and disassemble the clamping block, and then it is convenient to replace the clamping block, so as to facilitate adaptation to different mechanical components, bringing great convenience to the mechanical processing work.

[0009] In order to facilitate the limitation of the arc-shaped tooth block:

[0010] As a further improvement of the above technical solution: A first limiting groove is formed on the top inner wall of the rectangular groove, a first limiting block is slidably installed in the first limiting groove, and the first limiting block is fixed on the arc-shaped tooth block.

[0011] The beneficial effects of this improvement are as follows: By providing the first limiting groove and the first limiting block, it is convenient to limit the arc-shaped tooth block.

[0012] To facilitate the movement of the arc-shaped tooth block driven by the first lead screw:

[0013] As a further improvement of the above technical solution: A threaded groove is formed on one side of the arc-shaped tooth block, and the first lead screw is threadedly installed in the threaded groove.

[0014] The beneficial effects of this improvement are as follows: By providing the threaded groove, it is convenient for the first lead screw to drive the arc-shaped tooth block to move.

[0015] To facilitate the support and limitation of the first lead screw:

[0016] As a further improvement of the above technical solution: A first through hole penetrates through one inner wall of the rectangular groove, and the first lead screw rotatably penetrates through the first through hole.

[0017] The beneficial effects of this improvement are as follows: By providing the first through hole, it is convenient to support and limit the first lead screw.

[0018] To facilitate the improvement of the structural stability of the device:

[0019] As a further improvement of the above technical solution: A limiting rod slidably penetrates through the first mounting plate, and one end of the limiting rod is fixed on the second mounting plate.

[0020] The beneficial effects of this improvement are as follows: By providing the limiting rod, it is convenient to improve the structural stability of the device.

[0021] To facilitate the locking of the clamping plate by the internal thread cylinder:

[0022] As a further improvement of the above technical solution: A second through hole penetrates through the clamping plate, the internal thread cylinder slidably penetrates through the second through hole, a third through hole penetrates through one inner wall of the circular groove, and the rotating rod rotatably penetrates through the third through hole.

[0023] The beneficial effects of this improvement are as follows: By providing the second through hole, it is convenient for the internal thread cylinder to lock the clamping plate.

[0024] To facilitate the support and limitation of the second lead screw:

[0025] As a further improvement of the above technical solution: A vertical plate is fixedly installed in the circular groove, the second lead screw rotatably penetrates through the vertical plate, a second limiting groove is formed on one inner wall of the circular groove, a second limiting block is slidably installed in the second limiting groove, and the second limiting block is fixed on the internal thread cylinder.

[0026] The beneficial effects of this improvement are as follows: By providing a vertical plate, it is convenient to support and limit the second lead screw.

[0027] The beneficial effects of the present utility model are as follows: Through a simple rotation adjustment structure, it is convenient to quickly adjust the opening orientation of the clamp, and further convenient to rotate and adjust the clamped mechanical components, thus facilitating the subsequent processing operations of the mechanical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the schematic front sectional view of the structure of the present utility model;

[0029] Figure 2 is the present utility model Figure 1 the enlarged schematic view of part A in;

[0030] Figure 3 is the schematic three-dimensional sectional view of the arc-shaped tooth block in the present utility model;

[0031] Figure 4 is the present utility model Figure 1 the enlarged schematic view of part B in;

[0032] Figure 5 is the schematic three-dimensional sectional combined assembly structure view of the clamp block, connecting block and clamping plate in the present utility model.

[0033] In the figure: 1, fixed plate; 2, turntable; 3, U-shaped bracket; 4, first mounting plate; 5, hydraulic cylinder; 6, second mounting plate; 7, clamp block; 8, round hole; 9, rotating shaft; 10, annular groove; 11, gear; 12, rectangular groove; 13, arc-shaped tooth block; 14, first lead screw; 15, clamping groove; 16, connecting block; 17, rectangular through hole; 18, clamping plate; 19, round groove; 20, internal thread cylinder; 21, second lead screw; 22, first bevel gear; 23, rotating rod; 24, second bevel gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.

[0035] As Figures 1-5As shown in the figure, a self-locking clamp device includes a fixed plate 1. A turntable 2 is rotatably installed on the top of the fixed plate 1. A U-shaped bracket 3 is fixedly installed on the top of the turntable 2. A first mounting plate 4 is fixedly installed on the top of the U-shaped bracket 3. A hydraulic cylinder 5 is fixedly installed at the bottom of the first mounting plate 4. The output rod of the hydraulic cylinder 5 slidably penetrates through the first mounting plate 4 and is fixedly installed with a second mounting plate 6. Clamping blocks 7 are provided on one side of the first mounting plate 4 and the second mounting plate 6 respectively, and the two clamping blocks 7 are adapted to each other. A circular hole 8 penetrates through the turntable 2, and a rotating shaft 9 rotatably penetrates through the circular hole 8. The rotating shaft 9 is fixed on the top of the fixed plate 1. An annular groove 10 is formed on the inner wall of the circular hole 8. A gear 11 is rotatably installed in the annular groove 10. The gear 11 is fixedly sleeved on the rotating shaft 9. A rectangular groove 12 is formed on one side inner wall of the annular groove 10. An arc-shaped tooth block 13 is slidably installed in the rectangular groove 12. One end of the arc-shaped tooth block 13 extends into the annular groove 10 and meshes with the gear 11. A first lead screw 14 is rotatably installed on the turntable 2. The first lead screw 14 is threadedly connected with the arc-shaped tooth block 13. Through a simple rotation adjustment structure, it is convenient to quickly adjust the opening orientation of the clamp, and then it is convenient to rotate and adjust the clamped mechanical parts, so as to facilitate the subsequent processing operation of the mechanical parts. The first mounting plate 4 and the second mounting plate 6 also each include a clamping groove 15. The two clamping grooves 15 are respectively formed on the sides of the first mounting plate 4 and the second mounting plate 6 close to each other. A connecting block 16 is slidably installed in the clamping groove 15. The connecting block 16 is fixed at one end of the corresponding clamping block 7. A rectangular through hole 17 penetrates through one side inner wall of the clamping groove 15. A clamping plate 18 slidably penetrates through the rectangular through hole 17. The clamping plate 18 is fixed on the corresponding connecting block 16. A circular groove 19 is formed on one side inner wall of the rectangular through hole 17. An internally threaded cylinder 20 is slidably installed in the circular groove 19. The internally threaded cylinder 20 slidably penetrates through the corresponding clamping plate 18. A second lead screw 21 is threadedly installed in the internally threaded cylinder 20. One end of the second lead screw 21 extends out of the internally threaded cylinder 20. A first bevel gear 22 is fixedly sleeved on the second lead screw 21. Rotating rods 23 are provided on the sides of the first mounting plate 4 and the second mounting plate 6 away from each other. One end of the rotating rod 23 extends into the corresponding circular groove 19 and is provided with a second bevel gear 24. The second bevel gear 24 meshes with the first bevel gear 22. By setting like this, it is convenient to quickly install and disassemble the clamping block 7, and then it is convenient to replace the clamping block 7, so as to facilitate adapting to different mechanical parts, which brings great convenience to the mechanical processing work. A first limiting groove is formed on the top inner wall of the rectangular groove 12. A first limiting block is slidably installed in the first limiting groove. The first limiting block is fixed on the arc-shaped tooth block 13. By setting the first limiting groove and the first limiting block, it is convenient to limit the arc-shaped tooth block 13. A threaded groove is formed on one side of the arc-shaped tooth block 13.The first lead screw 14 is threadedly installed in the threaded groove. By providing the threaded groove, it is convenient for the first lead screw 14 to drive the arc-shaped tooth block 13 to move. A first through hole penetrates through one inner wall of the rectangular groove 12, and the first lead screw 14 rotates through the first through hole. By providing the first through hole, it is convenient to support and limit the first lead screw 14. A limiting rod slidably penetrates through the first mounting plate 4, and one end of the limiting rod is fixed on the second mounting plate 6. By providing the limiting rod, it is convenient to improve the structural stability of the device. A second through hole penetrates through the clamping plate 18, and the internal thread cylinder 20 slidably penetrates through the second through hole. A third through hole penetrates through one inner wall of the circular groove 19, and the rotating rod 23 rotates through the third through hole. By providing the second through hole, it is convenient for the internal thread cylinder 20 to lock the clamping plate 18. A vertical plate is fixedly installed in the circular groove 19, and the second lead screw 21 rotates through the vertical plate. A second limiting groove is formed in one inner wall of the circular groove 19, and a second limiting block is slidably installed in the second limiting groove. The second limiting block is fixed on the internal thread cylinder 20. By providing the vertical plate, it is convenient to support and limit the second lead screw 21.,

[0036] The working principle of the present utility model is as follows: When in use, first fix the clamp device on the moving mechanism through the fixing plate 1, then place the mechanical component between the two clamping blocks 7, and then turn on the hydraulic cylinder 5. The output rod of the hydraulic cylinder 5 drives the second mounting plate 6 to approach the first mounting plate 4, so that the two clamping blocks 7 approach each other until the mechanical component is clamped, and then processing can be carried out. When it is necessary to rotate and adjust the processing orientation of the mechanical component, first rotate the first lead screw 14. The first lead screw 14 drives the arc-shaped tooth block 13 to slide into the rectangular groove 12, so that the fixation of the gear 11 is released. Then rotate the two clamping blocks 7. At the same time, the two clamping blocks 7 drive the first mounting plate 4 and the second mounting plate 6 to rotate. The first mounting plate 4 drives the U-shaped bracket 3 to rotate, so that the turntable 2 is driven to rotate on the fixing plate 1. At the same time, the rotating shaft 9 rotates in the round hole 8 until the orientations of the two clamping blocks 7 are appropriate. Then rotate the first lead screw 14 in the reverse direction, so that the arc-shaped tooth block 13 meshes with the gear 11 again, and the turntable 2 is fixed. The opening orientations of the two clamping blocks 7 are appropriate. Through such a setting, it is convenient to quickly adjust the opening orientation of the clamp, and further convenient to rotate and adjust the clamped mechanical component, thus facilitating the subsequent processing operation of the mechanical component. When it is necessary to replace the clamping block 7, first rotate the two rotating rods 23. The rotating rods 23 drive the second bevel gear 24 to rotate. The second bevel gear 24 drives the first bevel gear 22 to rotate. The first bevel gear 22 drives the second lead screw 21 to rotate. The second lead screw 21 drives the internal thread cylinder 20 to slide out of the corresponding clamping plate 18, so that the fixation of the clamping plate 18 is released. Then pull the clamping block 7, so that the connecting block 16 is driven to slide out of the corresponding card slot 15. At the same time, the connecting block 16 drives the clamping plate 18 to slide out of the corresponding rectangular through hole 17, and the clamping block 7 is removed. Then the required clamping block 7 can be replaced. Through such a setting, it is convenient to quickly install and disassemble the clamping block 7, and further convenient to replace the clamping block 7, thus facilitating the adaptation to different mechanical components and bringing great convenience to the mechanical processing work.

[0037] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, retouches or changes can be made, and the above technical features can also be combined in an appropriate way; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.

Claims

1. A self-locking clamp device, comprising a fixing plate (1), characterized in that: A turntable (2) is rotatably installed on the top of the fixed plate (1). A U-shaped bracket (3) is fixedly installed on the top of the turntable (2). A first mounting plate (4) is fixedly installed on the top of the U-shaped bracket (3). A hydraulic cylinder (5) is fixedly installed on the bottom of the first mounting plate (4). The output rod of the hydraulic cylinder (5) slidably penetrates through the first mounting plate (4) and is fixedly installed with a second mounting plate (6). Clamping blocks (7) are arranged on one side of the first mounting plate (4) and the second mounting plate (6). The two clamping blocks (7) are adapted to each other. A round hole (8) penetrates through the turntable (2). A rotating shaft (9) rotatably penetrates through the round hole (8). The rotating shaft (9) is fixed on the top of the fixed plate (1). An annular groove (10) is formed on the inner wall of the round hole (8). A gear (11) is rotatably installed in the annular groove (10). The gear (11) is fixedly sleeved on the rotating shaft (9). A rectangular groove (12) is formed on one side inner wall of the annular groove (10). An arc-shaped tooth block (13) is slidably installed in the rectangular groove (12). One end of the arc-shaped tooth block (13) extends into the annular groove (10) and meshes with the gear (11). A first lead screw (14) is rotatably installed on the turntable (2). The first lead screw (14) is threadedly connected to the arc-shaped tooth block (13).

2. The self-locking clamp device according to claim 1, characterized in that: The first mounting plate (4) and the second mounting plate (6) both further include clamping grooves (15). The two clamping grooves (15) are respectively formed on the sides of the first mounting plate (4) and the second mounting plate (6) close to each other. A connecting block (16) is slidably installed in the clamping groove (15). The connecting block (16) is fixed at one end of the corresponding clamping block (7). A rectangular through hole (17) penetrates through one side inner wall of the clamping groove (15). A clamping plate (18) slidably penetrates through the rectangular through hole (17). The clamping plate (18) is fixed on the corresponding connecting block (16). A round groove (19) is formed on one side inner wall of the rectangular through hole (17). An internally threaded cylinder (20) is slidably installed in the round groove (19). The internally threaded cylinder (20) slidably penetrates through the corresponding clamping plate (18). A second lead screw (21) is threadedly installed in the internally threaded cylinder (20). One end of the second lead screw (21) extends out of the internally threaded cylinder (20). A first bevel gear (22) is fixedly sleeved on the second lead screw (21). Rotating rods (23) are arranged on the sides of the first mounting plate (4) and the second mounting plate (6) away from each other. One end of the rotating rod (23) extends into the corresponding round groove (19) and is provided with a second bevel gear (24). The second bevel gear (24) meshes with the first bevel gear (22).

3. The self-locking clamp device according to claim 1, characterized in that: A first limiting groove is formed on the top inner wall of the rectangular groove (12). A first limiting block is slidably installed in the first limiting groove. The first limiting block is fixed on the arc-shaped tooth block (13).

4. A self-locking clamp device according to claim 1, characterized in that: A threaded groove is formed on one side of the arc-shaped tooth block (13). The first lead screw (14) is threadedly installed in the threaded groove.

5. The self-locking clamp device according to claim 1, characterized in that: One inner wall of the rectangular groove (12) is penetrated by a first through hole, and the first lead screw (14) rotatably penetrates the first through hole.

6. The self-locking clamp device according to claim 1, characterized in that: A limiting rod slidably penetrates through the first mounting plate (4), and one end of the limiting rod is fixed on the second mounting plate (6).

7. The self-locking clamp device according to claim 2, characterized in that: A second through hole is penetrated through the clamping plate (18), the internal thread cylinder (20) slidably penetrates through the second through hole, a third through hole is penetrated through one inner wall of the circular groove (19), and the rotating rod (23) rotatably penetrates through the third through hole.

8. The self-locking clamp device according to claim 2, characterized in that: A vertical plate is fixedly installed in the circular groove (19), the second lead screw (21) rotatably penetrates through the vertical plate, a second limiting groove is formed in one inner wall of the circular groove (19), a second limiting block is slidably installed in the second limiting groove, and the second limiting block is fixed on the internal thread cylinder (20).

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