A clamping and locking mechanism with automatic centering function

Abstract

The present application relates to a kind of clamping locking mechanism with automatic centering function, belong to equipment clamping technical field, solve the problem that existing clamping mechanism cannot be automatically centered and clamping speed is slow;Clamping locking mechanism with automatic centering function, including clamping support, first mobile slider, rack, first fixed slider, second slider, push-pull trapezoidal block and clamping push device;First fixed slider is fixed in the rack, the first fixed slider is slidably connected with two symmetrical first mobile sliders, the first mobile slider has first slope, and the first slope of the first mobile slider is fixed with second slider.The clamping locking mechanism of the present application, the setting of clamping support, first mobile slider, first fixed slider and push-pull trapezoidal block makes first mobile slider always about trapezoidal push-pull block symmetry, realizes the centering clamping to the article to be clamped.

Description

Technical Field

[0001] This invention relates to the field of equipment clamping technology, and in particular to a clamping and locking mechanism with automatic centering function. Background Technology

[0002] Clamping devices are common and widely used in various stages of industrial production assembly. After the attitude adjustment of a missile thruster is completed, it needs to be fixed to prevent misalignment, tilting, overturning, or other changes in attitude during subsequent transportation, which could affect subsequent work.

[0003] The clamping and fixing device is a mechanism that secures the thruster to the propulsion stage attitude adjustment device by clamping the thruster adapter ring. Traditional thruster fixing methods involve creating bolt holes in the thruster adapter ring and using several sets of bolts to fasten it to a frame. While simple and reliable, this bolting method cannot achieve proper centering and clamping. Therefore, for specific operating conditions requiring reloading and transportation, or other suitable industrial production scenarios, an attitude centering adjustment, fixing, clamping, and locking mechanism suitable for missile thruster adapter rings needs to be developed.

[0004] Existing clamping mechanisms typically adjust the clamping width by rotating the handle. When the width of the clamped item varies significantly, it usually requires ten or even dozens of rotations. Therefore, we need a clamping mechanism to solve the problems of existing clamping mechanisms, such as the inability to automatically center and slow clamping speed. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide a clamping and locking mechanism with automatic centering function to solve the problems of inability to automatically center and slow clamping speed of existing clamping mechanisms mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A clamping and locking mechanism with automatic centering function includes a clamping bracket, a first movable slider, a frame, a first fixed slider, a second slider, a push-pull trapezoidal block, and a clamping and pushing device. The frame has a first fixed slider fixed inside, and the first fixed slider is slidably connected to two symmetrical first movable sliders. The first movable slider has a first inclined surface, and the first inclined surface of the first movable slider is fixed to the second slider. A clamping bracket is installed on one side of the first movable slider, and a slidable push-pull trapezoidal block is installed between the two second sliders. A clamping and pushing device is installed on one side of the push-pull trapezoidal block.

[0008] Furthermore, a rubber base plate is installed on one side of the clamping bracket.

[0009] Furthermore, a pressure sensor plate is installed between the clamping bracket and the rubber base plate.

[0010] Furthermore, slider limiting plates are fixed on both sides of the frame.

[0011] Furthermore, the frame has through holes on both sides.

[0012] Furthermore, the clamping bracket and the first movable slider are fixed together with bolts.

[0013] Furthermore, the push-pull trapezoidal block and the clamping and pushing device are connected by a rotating mechanism, which includes a ball groove and a ball block; a ball groove is provided on one side of the push-pull trapezoidal block, a ball block is installed in the ball groove, and the ball block is fixedly connected to the clamping and pushing device.

[0014] Furthermore, both the frame and the clamping bracket have an anti-rust coating on their surfaces.

[0015] Furthermore, the clamping and pushing device includes a threaded rod, and a threaded hole is provided in the middle of the frame, with the threaded rod threadedly connected to the threaded hole.

[0016] Furthermore, the clamping and pushing device includes a positioning cylinder, an externally threaded rod, an internally threaded cylinder, a first rod body, a rotating disk, and a sliding cylinder; the positioning cylinder is fixed to one side of the frame, and an internally threaded cylinder is slidably connected inside the positioning cylinder. A quick positioning mechanism is installed between the internally threaded cylinder and the positioning cylinder, and an externally threaded rod is internally threaded to the internally threaded cylinder. A rotating disk is installed at one end of the externally threaded rod, and the first rod body is rotatably connected to the rotating disk. The tail of the internally threaded cylinder can rotate freely relative to the main body of the internally threaded cylinder, and the tail of the sliding cylinder can rotate freely relative to the main body of the sliding cylinder.

[0017] Furthermore, the free rotation between the tail end and the main body of the internally threaded cylinder and the sliding cylinder is achieved through the cooperation of the annular slider and the annular groove.

[0018] Furthermore, a handle is installed at one end of the first rod.

[0019] Furthermore, the rapid positioning mechanism includes a ratchet groove, a square groove, a movable ratchet, a lightweight spring, a limiting protrusion ring, and a sliding groove; the positioning cylinder has ratchet grooves arranged along the axial direction, the internally threaded cylinder has grooves arranged along the axial direction, the grooves have movable ratchets hinged inside, the middle of the movable ratchets is connected to the concave surface of the grooves by a lightweight spring, one side of the internally threaded cylinder has a long through groove parallel to the grooves, the long through groove is slidably connected to a sliding cylinder, the sliding cylinder has a square groove inside, and the external side of the internally threaded cylinder is fixed with a limiting protrusion ring.

[0020] Furthermore, the outer diameter of the internally threaded cylinder between the groove and the long through groove is reduced by 6 mm.

[0021] Furthermore, an elastic telescopic pad is installed between the sidewall of the elongated groove and the sidewall of the sliding cylinder.

[0022] Furthermore, an inclined rod is fixed to the end of the sliding cylinder, and one end of a hollow rod is hinged to the end of the internally threaded cylinder. The other end of the hollow rod is slidably connected to a groove in the middle of the first rod body, and one end of the inclined rod is slidably connected to the middle of the hollow rod.

[0023] The above technical solution has at least one of the following beneficial effects:

[0024] (1) The clamping and locking mechanism of the present invention, wherein the clamping bracket, the first movable slider, the first fixed slider and the push-pull trapezoidal block are arranged so that the first movable slider is always symmetrical about the trapezoidal push-pull block, thereby realizing the centering clamping of the item to be clamped;

[0025] (2) The clamping and locking mechanism of the present invention can quickly bring the clamping bracket close to the item to be clamped through the quick positioning mechanism, and then clamp the item by rotating the handle. The quick positioning mechanism greatly reduces the number of rotations of the handle, reduces the clamping operation time, and increases the work efficiency in scenarios such as loading and unloading and transportation.

[0026] (3) The clamping and locking mechanism of the present invention can be quickly approached to the item to be clamped, clamped, and the clamping and locking mechanism can be quickly reset by rotating or pushing and pulling the handle. It is convenient and quick to use and easy to operate.

[0027] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0028] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0029] Figure 1 This is a schematic diagram of the structure of a clamping and locking mechanism with automatic centering function according to the present invention. Figure 1 .

[0030] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0032] Figure 4 This is a schematic diagram of the frame structure of a clamping and locking mechanism with automatic centering function according to the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of a clamping and locking mechanism with automatic centering function according to the present invention. Figure 2 .

[0034] In the diagram: 1. Rubber base plate, 2. Clamping bracket, 3. First moving slider, 4. Frame, 5. First fixed slider, 6. Positioning cylinder, 7. Rattle groove, 8. Second slider, 9. Push-pull trapezoidal block, 10. Ball groove, 11. External threaded rod, 12. Internal threaded cylinder, 13. Handle, 14. First rod body, 15. Rotating disk, 16. Sliding cylinder, 17. Square groove, 18. Movable ratchet, 19. Lightweight spring, 20. Elastic telescopic pad, 21. Limiting protrusion ring, 22. Hollow rod, 23. Slide groove, 24. Threaded rod, 25. Threaded hole. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0036] Example 1

[0037] One specific embodiment of the present invention discloses a clamping and locking mechanism with an automatic centering function, such as... Figure 4 ,and Figure 5 As shown, a clamping and locking mechanism with automatic centering function includes a clamping bracket 2, a first movable slider 3, a frame 4, a first fixed slider 5, a second slider 8, a push-pull trapezoidal block 9, and a clamping and pushing device. The frame 4 has a first fixed slider 5 fixed inside it. The first fixed slider 5 is slidably connected to two symmetrical first movable sliders 3. The first movable slider 3 has a first inclined surface. The first inclined surface of the first movable slider 3 is fixed with the second slider 8. The clamping bracket 2 is installed on one side of the first movable slider 3. A slidable push-pull trapezoidal block 9 is installed between the two second sliders 8. The clamping and pushing device is installed on one side of the push-pull trapezoidal block 9.

[0038] The sliding trapezoidal block 9 has second sliding grooves on both sides, which cooperate with the second slider 8. When the sliding trapezoidal block 9 moves to the left or right (e.g., Figure 1As shown), the push-pull trapezoidal block 9 drives the second slider 8 to move. The first movable slider 3 has a first movable groove, which is slidably connected to the first fixed slider 5. With the cooperation of the first fixed slider 5 and the first movable slider 3, the first movable slider 3 moves to the center or both sides, thereby driving the clamping bracket 2 to clamp or contact the object.

[0039] Preferably, a rubber base plate 1 is installed on one side of the clamping bracket 2.

[0040] The rubber base plate 1 is used to increase the friction of the object to be clamped. At the same time, when facing objects with a small clamping contact area, the rubber base plate 1 can increase the contact area of ​​the object to be clamped by slight deformation.

[0041] Preferably, a pressure sensor plate is installed between the clamping bracket 2 and the rubber base plate 1.

[0042] When dealing with soft materials that cannot withstand large clamping forces, the pressure sensor can display the clamping force on the object, thereby adjusting the clamping and locking mechanism to have sufficient clamping force while avoiding damage to the object.

[0043] Preferably, slider limiting plates are fixed on both sides of the frame 4.

[0044] Preferably, the frame 4 has through holes on both sides.

[0045] The through holes are designed to facilitate the fixing of the frame 4.

[0046] Preferably, the clamping bracket 2 and the first movable slider 3 are fixed together by bolts.

[0047] When faced with items of different shapes to be clamped, and when different styles of clamping brackets 2 are required, the threaded connection makes it easy to disassemble and replace.

[0048] Preferably, the push-pull trapezoidal block 9 and the clamping and pushing device are connected by a rotating mechanism. A ball groove 10 is provided on one side of the push-pull trapezoidal block 9, and a ball block is installed in the ball groove 10. The ball block is fixedly connected to the clamping and pushing device.

[0049] As the ball rotates, it moves to one side, and the push-pull trapezoidal block 9 moves to one side along with the ball under the action of the ball groove 10.

[0050] Preferably, both the frame 4 and the clamping bracket 2 have an anti-rust coating.

[0051] The anti-rust coating is used to increase the service life of the frame 4 and the clamping bracket 2.

[0052] Preferably, the surface of the rubber base plate 1 is provided with anti-slip texture.

[0053] The anti-slip texture is designed to increase the friction of the rubber base plate 1.

[0054] Preferably, the clamping and pushing device includes a threaded rod 24, and a threaded hole 25 is provided in the middle of the frame 4, and the threaded rod 24 is threadedly connected in the threaded hole 25.

[0055] Example 2

[0056] This embodiment 2 is based on embodiment 1, but replaces the clamping and pushing device in embodiment 1, such as... Figure 1 , Figure 2 and Figure 3 As shown, preferably, the clamping and pushing device includes a positioning cylinder 6, an external threaded rod 11, an internal threaded cylinder 12, a first rod body 14, a rotating disk 15, and a sliding cylinder 16; the positioning cylinder 6 is fixed to one side of the frame 4, the internal threaded cylinder 12 is slidably connected inside the positioning cylinder 6, a quick positioning mechanism is installed between the internal threaded cylinder 12 and the positioning cylinder 6, and the external threaded rod 11 is internally threadedly connected to the internal threaded cylinder 12. A rotating disk 15 is installed at one end of the external threaded rod 11, and the first rod body 14 is rotatably connected to the rotating disk 15. The tail of the internal threaded cylinder 12 can rotate freely relative to the main body of the internal threaded cylinder 12, and the tail of the sliding cylinder 16 can rotate freely relative to the main body of the sliding cylinder 16.

[0057] Preferably, the free rotation between the tail end and the main body of the internally threaded cylinder 12 and the sliding cylinder 16 is achieved by the cooperation of an annular slider and an annular groove.

[0058] The annular slider and annular groove ensure that the first rod 14 will not be unable to rotate during its rotation around the external thread rod 11 due to the main body limitation of the internal thread cylinder 12 and the sliding cylinder 16.

[0059] The external threaded rod 11 and the internal threaded cylinder 12 work together to clamp the object to be clamped.

[0060] Preferably, a handle 13 is installed at one end of the first rod 14.

[0061] Used to increase the feel of pulling or rotating the first rod 14.

[0062] Preferably, the quick positioning mechanism includes a ratchet groove 7, a square groove 17, a movable ratchet 18, a lightweight spring 19, a limiting protrusion ring 21, and a sliding groove 23; the positioning cylinder 6 has a ratchet groove 7 arranged along the axial direction, the internally threaded cylinder 12 has a groove arranged along the axial direction, the movable ratchet 18 is hinged inside the groove, the middle part of the movable ratchet 18 is connected to the concave surface of the groove by a lightweight spring 19, one side of the internally threaded cylinder 12 has a long through groove parallel to the groove, the long through groove is slidably connected to a sliding cylinder 16, the sliding cylinder 16 has a square groove 17 inside, and the limiting protrusion ring 21 is fixed on the outside of the internally threaded cylinder 12.

[0063] The ratchet groove 7 and the movable ratchet 18 are used to quickly move the clamping bracket 2 to the vicinity of the item to be clamped. The sliding cylinder 16 and the square groove 17 are used to push the movable ratchet 18 out of the ratchet groove 7, which facilitates the reset of the clamping and locking mechanism.

[0064] Preferably, the outer diameter of the internally threaded cylinder between the groove and the elongated slot is reduced by 6 mm to facilitate the sliding of the sliding cylinder 16.

[0065] Preferably, an elastic telescopic pad 20 is installed between the sidewall of the elongated groove and the sidewall of the sliding cylinder 16.

[0066] When the elastic expansion pad 20 is not subjected to external force applied by the operator, the sliding cylinder 16 does not limit the movable ratchet 18. When the elastic expansion pad 20 receives external force applied by the operator, the sliding cylinder 16 moves to one side, pushing the movable ratchet 18 located in the ratchet groove 7 out of the ratchet groove 7, so that the internal thread cylinder 12 can slide in the positioning cylinder 6.

[0067] Preferably, an inclined rod is fixed to the end of the sliding cylinder 16, and one end of the hollow rod 22 is hinged to the end of the internally threaded cylinder 12. The other end of the hollow rod 22 is slidably connected to the groove 23 in the middle of the first rod body 14, and one end of the inclined rod is slidably connected to the middle of the hollow rod 22.

[0068] The first rod 14 has a groove in the middle. One end of the hollow rod 22 is slidably connected to the groove 23. The end of the hollow rod 22 that is connected to the groove is cylindrical, so that the hollow rod can rotate and slide relative to the first rod 14. The groove 23 is used to drive the hollow rod 22 to rotate when the first rod 14 rotates.

[0069] The end of the inclined rod is slidably connected to the hollow groove of the hollow rod 22, and the end of the inclined rod used for connection is cylindrical, so that the inclined rod can slide and rotate relative to the hollow rod 22, so that the sliding cylinder 16 slides under the rotation of the hollow rod 22.

[0070] When it is necessary to clamp and lock the item, pull the handle 13. The handle 13 drives the first rod 14 to receive the pulling force. Due to the presence of the limiting protrusion 21, the first rod 14 cannot rotate. The first rod 14 moves in the direction of the pulling force. The first rod 14 drives the movable ratchet 18 to move in the direction of the pulling force through the rotating disk 15, the external thread rod 11 and the internal thread cylinder 12. The movable ratchet 18 repeatedly enters the ratchet groove 7 under the action of the light spring 19. The principle of the movable ratchet 18 moving in the ratchet groove 7 is that the inclined surface of the ratchet groove 7 and the light spring 19 make the movable ratchet 18 move in the direction of the pulling force while repeatedly moving within a certain angle range.

[0071] When both rubber base plates 1 touch the object to be clamped, the handle 13 cannot be pulled. At this time, the movable ratchet 18 is in one of the ratchet grooves 7 or between two ratchet grooves 7. Pushing the rotating disk 15 causes the movable ratchet 18 to move in the opposite direction. Due to the unidirectional movement principle of the ratchet, the movable ratchet 18 in the ratchet groove 7 remains in that ratchet groove 7, and the movable ratchet 18 between two ratchet grooves 7 retracts to one of the ratchet grooves 7, thereby moving the push-pull trapezoidal block 9 to the appropriate position, and thus enabling the clamping bracket 2 to quickly approach the object to be clamped.

[0072] Rotate the handle 13 in the forward direction. The handle 13 drives the external thread rod 11 to rotate through the first rod body 14 and the rotating disk 15. The external thread rod 11 rotates and moves to one side under the action of the internal thread cylinder 12, thereby driving the ball block to rotate and move to one side, pushing and pulling the trapezoidal block 9 to move to one side, thereby clamping the item.

[0073] The clamping push device for clamping items can save the number of times the handle 13 is frequently turned, shorten the time required to clamp items, and greatly improve clamping efficiency.

[0074] When it is necessary to resolve the clamping and locking of the item and reset it, rotate the handle 13 in the opposite direction three to five times to eliminate the force between the ratchet groove 7 and the movable ratchet 18, allowing movement between them. Push the handle 13 towards the positioning cylinder 6, causing the first rod 14 to rotate around the edge of the rotating disk 15. The first rod 14 drives the hollow rod 22 to rotate, which in turn pushes the tilting rod. The tilting rod drives the sliding cylinder 16 to rotate, and the wall of the sliding cylinder 16 pushes the movable ratchet 18 out of the ratchet groove 7. The limit between the internal threaded cylinder 12 and the positioning cylinder 6 disappears. Push the handle 13, which, through the action of the first rod 14, the rotating disk 15, the external threaded rod 11, the ball block, and the ball groove 10, pushes the trapezoidal push-pull block to move, thus resetting the clamping and locking mechanism.

[0075] When clamping an item using this clamping and locking mechanism, it is only necessary to pull the handle 13 (which quickly positions the clamping bracket 2 close to the item via a quick positioning mechanism) and rotate the handle 13 clockwise around the rotating disk 15 (the handle 13 drives the first rod 14 to rotate, the first rod 14 drives the rotating disk 15 to rotate, the rotating disk 15 drives the external threaded rod 11 to rotate, the external threaded rod 11 moves to one side under the action of the internal threaded cylinder 12, thereby pushing the push-pull trapezoidal block 9 to one side, and the push-pull trapezoidal block 9 drives the two clamping brackets 2 to move closer, thereby achieving centering clamping of the item). Compared with existing clamping devices, this mechanism has the advantages of significantly reducing the number of rotations of the handle 13, reducing the clamping operation time, and increasing work efficiency in scenarios such as centering clamping and transportation.

[0076] After clamping an item using this clamping mechanism, the clamping mechanism needs to be reset to complete the clamping function. This can be done by rotating the handle 13 in the opposite direction around the rotating disk 15 (the principle is the same as the forward rotation); rotating the first handle 13 towards the positioning cylinder 6 (so that the movable ratchet 18 disengages from the ratchet groove 7, allowing the internal thread cylinder 12 to slide freely between the positioning cylinder 6); and pushing the first handle 13 towards the positioning cylinder 6 (so that the quick positioning mechanism is reset; the rotation of the handle 13 towards the positioning cylinder 6 will automatically reset after the clamping bracket 2 is reset and the operator releases their hand, the reset relying on the elastic telescopic pad 20's telescopic characteristics).

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A clamping and locking mechanism with automatic centering function, characterized in that, The device includes a clamping bracket (2), a first movable slider (3), a frame (4), a first fixed slider (5), a second slider (8), a push-pull trapezoidal block (9), and a clamping and pushing device. The frame (4) has a first fixed slider (5) fixed inside it. The first fixed slider (5) is slidably connected to two symmetrical first movable sliders (3). The first movable slider (3) has a first inclined surface. The first inclined surface of the first movable slider (3) is fixed with a second slider (8). The clamping bracket (2) is installed on one side of the first movable slider (3). A slidable push-pull trapezoidal block (9) is installed between the two second sliders (8). A clamping and pushing device is installed on one side of the push-pull trapezoidal block (9). The clamping and pushing device includes a positioning cylinder (6), an external threaded rod (11), an internal threaded cylinder (12), a first rod body (14), a rotating disk (15), and a sliding cylinder (16); the positioning cylinder (6) is fixed on one side of the frame (4), the internal threaded cylinder (12) is slidably connected inside the positioning cylinder (6), a quick positioning mechanism is installed between the internal threaded cylinder (12) and the positioning cylinder (6), and the internal threaded cylinder (12) is internally threadedly connected to the external threaded rod (11), a rotating disk (15) is installed at one end of the external threaded rod (11), the rotating disk (15) is rotatably connected to the first rod body (14), the tail of the internal threaded cylinder (12) can rotate freely relative to the main body of the internal threaded cylinder (12), and the tail of the sliding cylinder (16) can rotate freely relative to the main body of the sliding cylinder (16); The rapid positioning mechanism includes a ratchet groove (7), a square groove (17), a movable ratchet (18), a light spring (19), a limiting protrusion (21), and a sliding groove (23). The positioning cylinder (6) has a ratchet groove (7) arranged along the axial direction, and the internal thread cylinder (12) has a groove arranged along the axial direction. The groove is hinged with a movable ratchet (18). The middle part of the movable ratchet (18) is connected to the concave surface of the groove by a light spring (19). The internal thread cylinder (12) has a long through groove parallel to the groove on one side. The long through groove is slidably connected to a sliding cylinder (16). The sliding cylinder (16) has a square groove (17) inside. The internal thread cylinder (12) has a limiting protrusion (21) fixed on the outside.

2. The clamping and locking mechanism with automatic centering function according to claim 1, characterized in that, A rubber base plate (1) is installed on one side of the clamping bracket (2).

3. A clamping and locking mechanism with automatic centering function according to claim 2, characterized in that, A pressure sensor plate is installed between the clamping bracket (2) and the rubber base plate (1).

4. A clamping and locking mechanism with automatic centering function according to claim 1, characterized in that, The frame (4) has slider limiting plates fixed on both sides.

5. A clamping and locking mechanism with automatic centering function according to claim 1, characterized in that, The frame (4) has through holes on both sides.

6. A clamping and locking mechanism with automatic centering function according to claim 1, characterized in that, The clamping bracket (2) and the first movable slider (3) are fixed together by bolts.

7. A clamping and locking mechanism with automatic centering function according to claim 1, characterized in that, The push-pull trapezoidal block (9) and the clamping and pushing device are connected by a rotating mechanism, which includes a ball groove (10) and a ball block; a ball groove (10) is provided on one side of the push-pull trapezoidal block (9), a ball block is installed in the ball groove (10), and the ball block is fixedly connected to the clamping and pushing device.

8. A clamping and locking mechanism with automatic centering function according to claim 1, characterized in that, The surfaces of the frame (4) and the clamping bracket (2) are both provided with anti-rust coating.

9. A clamping and locking mechanism with automatic centering function according to claim 2, characterized in that, The surface of the rubber base plate (1) is provided with anti-slip texture.

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