Water pump pliers jaw adjusting mechanism and water pump pliers

Abstract

The present application relates to a kind of water pump pliers jaw adjusting mechanism and water pump pliers, by reducing the width of slider, support body and elastomer are simultaneously arranged on the same side of slider, and support body and elastomer are separately arranged at both ends of slider, both sides of pivot, so that the movable ratchet of slider can be swung around support body by the radial pulling of pivot along long hole, and then the fixed ratchet is disengaged, then the lateral force can pull the pivot to quickly move the slider to the rear end of guide body, simplify the structure of jaw adjusting mechanism and the operation process of jaw adjustment, improve the jaw adjustment speed, and also can reduce production cost.

Description

Technical Field

[0001] This invention belongs to the field of clamping tool technology, specifically relating to a water pump clamp jaw adjustment mechanism and a water pump clamp. Background Technology

[0002] Pump pliers are a common clamping tool used for holding pipe-like workpieces. Their adjustable jaw size makes them highly versatile. The jaw adjustment of pump pliers primarily relies on an adjustment mechanism consisting of a slider with movable ratchet teeth (also referred to as a "ratchet" in some background art) and an elongated hole with fixed ratchet teeth on the fixed jaw body. This mechanism can quickly narrow the jaws, but widening them is more complex. For example, the invention patent ZL201410767671.0 discloses a "self-adjusting pump pliers," which has a lever at the end of the slider away from the spring and an unlocking pin corresponding to the lever on the movable jaw body. To widen the jaws, the movable jaw body is rotated to open the jaws to a certain angle. The unlocking pin then presses against the lever, causing the end of the slider with ratchet teeth to lift, thus separating the ratchet teeth on the slider from those on the fixed jaw. Maintaining this jaw opening, the movable jaw body is pulled, causing the slider to slide along the elongated hole, thereby widening the jaws of the pump pliers.

[0003] However, this adjustment structure has a series of drawbacks, such as complex structure, difficult assembly, and difficulty in operation due to the need to press the unlocking pin to insert it into the long hole. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a water pump clamp jaw adjustment mechanism, which solves the technical problems of complex structure and inconvenient operation of traditional water pump clamp jaw adjustment mechanisms.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a water pump pliers jaw adjustment mechanism, including a guide body located on the fixed jaw body of the water pump pliers and a slider connected to the movable jaw body. The front end of the guide body is used to connect to the fixed jaw of the fixed jaw body, and the rear end is used to connect to the fixed jaw handle of the fixed jaw body. A pivot is connected to the slider, which is used to hinge the movable jaw body. The guide body has an elongated hole extending from the front end to the rear end. The slider is embedded in the elongated hole and slides along the long axis of the elongated hole, causing the movable jaw of the movable jaw body to move away from or towards the fixed jaw. A large number of wedge-shaped grooves are provided on an inner side wall extending along the long axis of the elongated hole. The wedge-shaped grooves are arranged sequentially and continuously along the long axis of the elongated hole, and a fixed ratchet of the same shape is formed between adjacent wedge-shaped grooves. The top of the fixed ratchet is flush with the inner wall of the elongated hole where the wedge-shaped grooves are formed. The side of the slider facing the fixed ratchet is provided with at least one... The slider has a fixed ratchet mechanism with movable ratchet teeth, each movable ratchet tooth located at one end of the slider. An elastic body is located on the side of the slider facing away from the fixed ratchet teeth, at the same end as the movable ratchet teeth. One end of the elastic body is connected to the slider, and the other end slides against the inner wall of the corresponding elongated hole. The engagement of the fixed and movable ratchet teeth ensures that when the slider is subjected to force only in the long diameter direction of the elongated hole, it can only move towards the front end of the guide body in one direction. The sum of the width of the slider and the height of the movable ratchet teeth along the short diameter direction of the elongated hole is less than the short diameter of the elongated hole. A support body is also provided on the side of the slider facing away from the fixed ratchet teeth. This support body protrudes out of the slider along the short diameter direction of the elongated hole, and its height is less than the difference between the short diameter of the elongated hole and the width of the slider. The support body and the elastic body are located at opposite ends of the slider. The inner wall of the elongated hole against which the elastic body abuts is parallel and directly opposite to the inner wall of the elongated hole with a wedge-shaped groove. The pivot is located in the middle of the slider along the axial direction of the elongated hole, with the support body and the elastic body located on either side of the pivot.

[0006] As a preferred embodiment, the support body and the slider are integrally formed, and the top of the support body is a raised arc-shaped surface.

[0007] As a preferred embodiment, the support body is a roller shaft, and the side of the slider facing away from the fixed ratchet is provided with a round-bottomed U-shaped groove for embedding the roller shaft. Part of the roller shaft is embedded in the round-bottomed U-shaped groove and part of it is exposed outside the slider. The roller shaft is slidably engaged with the inner wall of the round-bottomed U-shaped groove, or the two ends of the roller shaft are rotatably connected to the two end walls of the round-bottomed U-shaped groove through end shafts.

[0008] As a preferred embodiment, the support body consists of multiple balls arranged sequentially along the axial direction of the elongated hole, with the balls partially slidably embedded within the slider.

[0009] As a preferred embodiment, the elastic body is a pre-compressed spring. A spring blind hole extending along the width direction of the slider is provided on the side of the slider facing away from the fixed ratchet. The spring blind hole and the movable ratchet are located at the same end of the slider. The spring is inserted into the spring blind hole, and one end of the spring extends out of the spring blind hole and slides against the inner wall of the corresponding elongated hole.

[0010] As a preferred embodiment, the elastic body is a pre-compressed round-bottomed "V"-shaped spring. A round-bottomed "V"-shaped groove is provided on the side of the slider facing away from the fixed ratchet. The "V"-shaped groove is closed at both ends along the axis. The "V"-shaped groove and the movable ratchet are located at the same end of the slider. The bottom of the spring is embedded in the "V"-shaped groove, and the two tops of the spring extend out of the "V"-shaped groove and slide against the inner wall of the corresponding elongated hole. The included angle at the bottom of the "V"-shaped groove is greater than the included angle at the bottom of the spring.

[0011] The further technical problem to be solved by the present invention is to provide a water pump clamp that solves the technical problem of inconvenient jaw adjustment operation of traditional water pump clamps.

[0012] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a water pump clamp, comprising a fixed clamp body and a movable clamp body, characterized in that it further comprises the water pump clamp jaw adjustment mechanism as described in any one of claims 1 to 6, wherein the fixed jaw of the fixed clamp body is connected to the front end of the guide body of the water pump clamp jaw adjustment mechanism, the fixed handle of the fixed clamp body is connected to the rear end of the guide body, and the two ends of the pivot extend out of the slider respectively; the movable clamp body comprises a movable jaw, a pivot part and a movable handle connected in sequence, wherein the pivot part has an assembly hole for the guide body to pass through, the guide body is inserted into the assembly hole, the slider is opposite to the pivot parts on both sides of the assembly hole and is rotatably connected to the pivot parts through the pivot, the movable jaw is opposite to the fixed jaw, the assembly hole allows the guide body to swing around the pivot inside, and the wedge-shaped groove is provided on the inner wall of the elongated hole near the water pump clamp jaw.

[0013] The beneficial effects of this invention are as follows: By reducing the width of the slider and simultaneously setting a support body and an elastic body on the same side of the slider, and distributing the support body and the elastic body at both ends of the slider and on both sides of the pivot, this invention enables the movable ratchet end of the slider to swing around the support body by pulling the pivot radially along the elongated hole, thereby disengaging from the fixed ratchet. Then, by using lateral force to pull the pivot, the slider can be quickly moved towards the rear end of the guide body. This simplifies the structure of the jaw adjustment mechanism and the jaw adjustment operation process, improves the jaw adjustment speed, and also reduces production costs.

[0014] The configuration of the support body and the relative positions of the support body, the elastic body and the pivot are crucial. The support body can reduce the swing range of the slider away from the fixed ratchet end, thereby improving the stability of the pivot and reducing the movement of the pivot along the short diameter direction in the long hole. This, in turn, reduces the lateral misalignment between the moving jaw and the fixed jaw of the pump clamp, and improves the clamping accuracy and stability of the pump clamp when holding pipe fittings. Attached Figure Description

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1This is a schematic diagram of the jaw adjustment mechanism described in Embodiment 1; Figure 2 yes Figure 1 Enlarged view of part A shown; Figure 3 This is a schematic diagram of another specific structure of the elastomer described in Example 1; Figure 4 This is a schematic diagram of another specific structure of the support described in Example 1; Figure 5 This is an exploded three-dimensional view of the water pump clamp described in Example 2; Figure 6 This is a schematic diagram of the connection structure between the movable clamp body and the fixed clamp body, and the water pump clamp jaw adjustment mechanism in a semi-split state. Figures 1-6 In the middle: 1. Guide body; 2. Slider; 3. Pivot; 4. Long hole; 5. Wedge groove; 6. Fixed ratchet; 7. Movable ratchet; 8. Elastic body; 9. Support body; 9a. End shaft; 10. Round bottom U-shaped groove; 11. Spring blind hole; 12. "V" shaped groove; 13. Nut; 100. Fixed jaw; 101. Fixed jaw; 102. Fixed jaw handle; 200. Movable jaw; 201. Movable jaw; 202. Pivot joint; 203. Movable jaw handle; 204. Assembly hole; 300. Water pump pliers jaw adjustment mechanism. Detailed Implementation

[0016] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example 1

[0017] like Figure 1 and Figure 2 The pump clamp jaw adjustment mechanism shown includes a guide body 1 located on the fixed clamp body of the pump clamp and a slider 2 connected to the movable clamp body. The front end of the guide body 1 is used to connect to the fixed jaw 101 of the fixed clamp body, and the rear end is used to connect to the fixed handle 102 of the fixed clamp body. A pivot 3 is connected to the slider 2, which is used to hinge the movable clamp body. The guide body 1 has an elongated hole 4 that extends from the front end to the rear end. The slider 2 is embedded in the elongated hole 4 and slides along the long axis of the elongated hole 4, causing the movable jaw of the movable clamp body to move away from or close to the fixed jaw. A large number of wedge-shaped grooves 5 are provided on an inner sidewall of the elongated hole 4 that extends along the long axis. The wedge-shaped grooves 5 are arranged continuously along the long axis of the elongated hole 4, and a fixed ratchet 6 of the same shape is formed between adjacent wedge-shaped grooves 5. The top of the fixed ratchet 6 is flush with the inner wall of the elongated hole 4 where the wedge-shaped grooves 5 are provided.

[0018] In this embodiment, the wedge-shaped groove 5 is provided on the inner wall of the elongated hole 5 near the jaws of the water pump clamp. The fixed ratchet 6 and the movable ratchet 7 cooperate to ensure that the slider 2 can only approach the front end of the guide body 1 in one direction when it is only subjected to the force in the long axis direction of the elongated hole 4.

[0019] The slider 2 has two movable ratchet teeth 7 that cooperate with the fixed ratchet tooth 6 on the side facing the fixed ratchet tooth 6. Each movable ratchet tooth 7 is located at the same end of the slider 2. An elastic body 8 is provided on the side of the slider 2 facing away from the fixed ratchet tooth 6. The elastic body 8 and the movable ratchet teeth 7 are located at the same end of the slider 2. One end of the elastic body 8 is connected to the slider, and the other end slides against the inner wall of the corresponding elongated hole 4.

[0020] like Figure 2 As shown, in this embodiment, the elastic body 8 is a pre-compressed spring. The slider 2 has a spring blind hole 11 extending along the width direction of the slider 2 on the side facing away from the fixed ratchet 6. The spring blind hole 11 and the movable ratchet 7 are located at the same end of the slider 2. The spring is inserted into the spring blind hole 11, and one end of the spring extends out of the spring blind hole 11 and slides against the inner wall of the corresponding elongated hole 4.

[0021] Using a spring as the elastic body 8 has the advantage of high assembly stability. Most of the spring is inserted into the spring blind hole 11, so there will be no problem of the spring falling off.

[0022] like Figure 3 As shown, in practical applications, the elastic body 8 can also be a pre-compressed round-bottomed "V"-shaped spring. A round-bottomed "V"-shaped groove 12 is provided on the side of the slider 2 facing away from the fixed ratchet 6. The two ends of the "V"-shaped groove 12 are closed in the axial direction. The "V"-shaped groove 12 and the movable ratchet 7 are located at the same end of the slider 2. The bottom of the spring is embedded in the "V"-shaped groove 12, and the two tops of the spring extend out of the "V"-shaped groove 12 and slide against the inner wall of the corresponding elongated hole 4. The included angle α at the bottom of the "V"-shaped groove 12 is greater than the included angle β at the bottom of the spring.

[0023] use Figure 3 The spring shown is an elastic body 8, and it cooperates with a "V" shaped groove 12 with a bottom angle α greater than the bottom angle β of the spring. First, it can increase the contact area between the elastic body 8 and the inner wall of the elongated hole 4, thereby reducing the pressure per unit area and facilitating the sliding of the elastic body 8. At the same time, it can also keep both tops of the elastic body 8 abutting against the inner wall of the elongated hole 4 during the swing of the slider 2.

[0024] In this embodiment, the sum of the width of the slider 2 and the height of the movable ratchet 7 along the minor axis of the long hole 4 is less than the minor axis of the long hole 4, to ensure that the movable ratchet 7 can completely disengage from the fixed ratchet 6. A support body 9 is also provided on the side of the slider 2 facing away from the fixed ratchet 6. This support body 9 protrudes out of the slider 2 along the minor axis of the long hole 4. The height of the support body 9 is less than the difference between the minor axis of the long hole 4 and the width of the slider 2. The support body 9 and the elastic body 8 are respectively located at both ends of the slider 2. The inner wall of the long hole 4 that the elastic body 8 abuts against is parallel and directly opposite to the inner wall of the long hole 4 with the wedge-shaped groove 5. The pivot 3 is located in the middle of the slider 2 along the axial direction of the long hole 4, and the support body 9 and the elastic body 8 are respectively located on both sides of the pivot 3.

[0025] The support body 9 effectively reduces the swing range of the slider 2 away from the movable ratchet, thereby further limiting the movement of the pivot 3 along the short diameter within the elongated hole 4, improving the clamping accuracy and stability of the pump clamp. Simultaneously, the support body 9, in conjunction with the narrow slider 2, allows the pivot 3 to be pushed away from the fixed ratchet 5 by a force, causing the movable ratchet 6 end of the slider 2 to swing rapidly away from the fixed ratchet 5, without requiring additional components to drive the slider 2's swing. This effectively simplifies the jaw adjustment mechanism, reduces production costs, and improves operational convenience.

[0026] In this embodiment, the support body 9 is preferably integrally formed with the slider 2, and the top of the support body 9 is a raised arc-shaped surface to ensure that the swing of the slider 2 does not affect the stable sliding contact between the support body 9 and the inner wall of the elongated hole 4.

[0027] Of course, in practical applications, the structure of the support 9 can vary.

[0028] like Figure 4 The diagram shows another structure of the support body 9, which is a roller shaft. The slider 2 has a round-bottomed U-shaped groove 10 for embedding the roller shaft on the side facing away from the fixed ratchet 6. The round-bottomed U-shaped groove 10 is closed at both ends. The roller shaft is partially embedded in the round-bottomed U-shaped groove 10 and partially exposed outside the slider 2. The roller shaft and the inner wall of the round-bottomed U-shaped groove 10 are rotatably connected to the end shafts 9a at both ends of the roller shaft and the end walls of the round-bottomed U-shaped groove 10.

[0029] Using a roller shaft as the support body 9 changes the sliding contact between the support body 9 and the inner wall of the elongated hole 4 to a rolling contact. The roller shaft is also connected to the end shaft 9a for rotational purposes to further reduce the rotational resistance of the roller shaft. In practical applications, the roller shaft can also be directly slidably fitted within the round-bottomed U-shaped groove 10, or further lubricated with grease.

[0030] Similar to rollers, multiple balls can be used as support bodies 9. The multiple balls are arranged discretely along the axial direction of the elongated hole 4, and the balls are partially slidably embedded in the slider 2.

[0031] The working process of this invention is as follows: Figure 1 and Figure 2 As shown, when the user needs to enlarge the jaws of the water pump clamp, a thrust in the direction F is applied to the pivot 3. Under the action of the thrust, the slider 2 moves away from the fixed ratchet 6 along with the pivot. Then, the support 9 first contacts the inner wall of the elongated hole 4 opposite to the fixed ratchet 6, forming a support. While the pivot 3 continues to move in the original direction, the slider 2 swings at one end of the movable ratchet 7. Since the distance between the movable ratchet 7 and the support 9 is greater than the distance between the pivot 3 and the support 9, the swing speed of the movable ratchet 7 is greater than the moving speed of the pivot 3, thereby causing the movable ratchet 7 to quickly disengage from the fixed ratchet 6.

[0032] After the movable ratchet 7 disengages from the fixed ratchet 6, one state is that the support body 9 and the elastic body 8 abut against the inner wall of the elongated hole 4, and the other state is that the end of the slider 2 away from the support body 9 also abuts against the inner wall of the elongated hole 4. These two states depend on the magnitude of the force applied by the user to the pivot 3.

[0033] After disengaging the movable ratchet 7 from the fixed ratchet 6, the user, while maintaining a force in the F direction, pushes the guide body 1 forward along the long axis of the elongated hole 4, causing the slider 2 to slide towards the rear end of the guide body 1, thus widening the jaws of the water pump clamp. Alternatively, while maintaining a force in the F direction, the user can pull the pivot 3 backward along the long axis of the elongated hole 4, causing the slider 2 to slide towards the rear end of the guide body 1, further widening the jaws of the water pump clamp.

[0034] It is evident that the water pump clamp jaw adjustment mechanism described in Embodiment 1 has a simpler structure and is more convenient to operate compared with the prior art. Example 2

[0035] like Figure 5 and Figure 6 The diagram shows a water pump clamp, including a fixed clamp body 100 and a movable clamp body 200, and also includes the water pump clamp jaw adjustment mechanism 300 described in Embodiment 1 above. The fixed jaw 101 of the fixed clamp body 100 is connected to the front end of the guide body 1 of the water pump clamp jaw adjustment mechanism 300, and the fixed clamp handle 102 of the fixed clamp body 100 is connected to the rear end of the guide body 1. The two ends of the pivot 3 extend out of the slider 2, respectively. The movable clamp body 200 includes a movable jaw 201 and a pivot part 2 connected in sequence. 02 and movable jaw 203, the pivot part 202 is provided with an assembly hole 204 for the guide body 1 to pass through, the guide body 1 is inserted into the assembly hole 204, the slider 2 is opposite to the pivot parts 202 on both sides of the assembly hole 204 and is rotatably connected to the pivot part 202 through the pivot 3, the movable jaw 201 is opposite to the fixed jaw 101, the assembly hole 204 allows the guide body 1 to swing around the pivot 3 inside it, and the wedge-shaped groove 5 is provided on the inner wall of the long hole 4 near the water pump jaw.

[0036] In this embodiment, the pivot 3 is a screw, which passes through the pivot joint 202 and is locked by the nut 13.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A water pump clamp jaw adjustment mechanism, comprising a guide body (1) located on the fixed clamp body of the water pump clamp and a slider (2) connected to the movable clamp body. The front end of the guide body (1) is used to connect to the fixed jaw of the fixed clamp body, and the rear end is used to connect to the fixed clamp handle of the fixed clamp body. A pivot (3) is connected to the slider (2), and the pivot (3) is used to hinge the movable clamp body. An elongated hole (4) is provided on the guide body (1). The elongated hole (4) extends from the front end to the rear end of the guide body (1). The slider (2) is embedded in the elongated hole (4) and slides along the long axis of the elongated hole (4), causing the movable jaw of the movable clamp body to move away from or close to the fixed jaw. A large number of wedge-shaped grooves (5) are provided on an inner side wall of the elongated hole (4) extending along the long axis. The wedge-shaped grooves (5) are arranged sequentially and continuously along the long axis of the elongated hole (4). A fixed ratchet (6) of the same shape is formed between adjacent wedge-shaped grooves (5). The top of the fixed ratchet (6) is flush with the inner wall of the elongated hole (4) where the wedge-shaped grooves (5) are provided. The slider (2) is provided with at least one movable ratchet (7) that cooperates with the fixed ratchet (6) on the side facing the fixed ratchet (6). Each movable ratchet (7) is located at one end of the slider (2). An elastic body (8) is provided on the side of the slider (2) facing away from the fixed ratchet (6). The elastic body (8) and the movable ratchet (7) are located at the same end of the slider (2). One end of the elastic body (8) is connected to the slider, and the other end slides against the inner wall of the long hole (4) directly opposite. The fixed ratchet (6) and the movable ratchet (7) work together to ensure that when the slider (2) is only subjected to the force in the long axis direction of the long hole (4), it can only approach the front end of the guide body (1) in one direction. Its features are, The sum of the width of the slider (2) and the height of the movable ratchet (7) along the short diameter of the long hole (4) is less than the short diameter of the long hole (4). A support body (9) is also provided on the side of the slider (2) facing away from the fixed ratchet (6). The support body (9) protrudes out of the slider (2) along the short diameter of the long hole (4). The height of the support body (9) is less than the difference between the short diameter of the long hole (4) and the width of the slider (2). The support body (9) and the elastic body (8) are respectively located at both ends of the slider (2). The inner wall of the long hole (4) that the elastic body (8) abuts is parallel to the inner wall of the long hole (4) with the wedge-shaped groove (5). The pivot (3) is located in the middle of the slider (2) along the axial direction of the long hole (4). The support body (9) and the elastic body (8) are respectively located on both sides of the pivot (3).

2. The water pump clamp jaw adjustment mechanism according to claim 1, characterized in that, The support (9) and the slider (2) are integrally formed, and the top of the support (9) is a raised arc-shaped surface.

3. The water pump clamp jaw adjustment mechanism according to claim 1, characterized in that, The support (9) is a roller shaft. The side of the slider (2) facing away from the fixed ratchet (6) is provided with a round-bottomed U-shaped groove (10) for embedding the roller shaft. The roller shaft is partially embedded in the round-bottomed U-shaped groove (10) and partially exposed outside the slider (2). The roller shaft slides in cooperation with the inner wall of the round-bottomed U-shaped groove (10) or the two ends of the roller shaft are rotatably connected to the two end walls of the round-bottomed U-shaped groove (10) through the end shaft (9a).

4. The water pump clamp jaw adjustment mechanism according to claim 1, characterized in that, The support (9) consists of multiple balls arranged sequentially along the axial direction of the long hole (4), with the balls partially slidably embedded in the slider (2).

5. The water pump clamp jaw adjustment mechanism according to claim 1, characterized in that, The elastic body (8) is a pre-compressed spring. A spring blind hole (11) extending along the width direction of the slider (2) is provided on the side of the slider (2) facing away from the fixed ratchet (6). The spring blind hole (11) and the movable ratchet (7) are located at the same end of the slider (2). The spring is inserted into the spring blind hole (11). One end of the spring extends out of the spring blind hole (11) and slides against the inner wall of the opposite long hole (4).

6. The water pump clamp jaw adjustment mechanism according to claim 1, characterized in that, The elastic body (8) is a pre-compressed round-bottom "V" shaped spring. A round-bottom "V" shaped groove (12) is provided on the side of the slider (2) facing away from the fixed ratchet (6). The "V" shaped groove (12) is closed at both ends in the axial direction. The "V" shaped groove (12) and the movable ratchet (7) are located at the same end of the slider (2). The bottom of the spring is embedded in the "V" shaped groove (12). The two tops of the spring extend out of the "V" shaped groove (12) and slide against the inner wall of the opposite long hole (4). The included angle at the bottom of the "V" shaped groove (12) is greater than the included angle at the bottom of the spring.

7. A water pump clamp, comprising a fixed clamp body (100) and a movable clamp body (200), characterized in that, It also includes the water pump clamp jaw adjustment mechanism (300) according to any one of claims 1 to 6 above, wherein the fixed jaw (101) of the fixed clamp body (100) is connected to the front end of the guide body (1) of the water pump clamp jaw adjustment mechanism (300), the fixed clamp handle (102) of the fixed clamp body (100) is connected to the rear end of the guide body (1), and the two ends of the pivot (3) extend out of the slider (2) respectively. The movable clamp body (200) includes a movable jaw (201), a pivot part (202) and a movable clamp handle (203) connected in sequence. The part (202) has an assembly hole (204) for the guide body (1) to pass through. The guide body (1) is inserted into the assembly hole (204). The slider (2) is opposite to the pivot part (202) on both sides of the assembly hole (204) and is rotatably connected to the pivot part (202) through the pivot (3). The movable jaw (201) is opposite to the fixed jaw (101). The assembly hole (204) satisfies the guide body (1) to swing around the pivot (3) inside it. The wedge-shaped groove (5) is set on the inner wall of the long hole (4) near the water pump clamp jaw.

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