Clamping device and clamping device

Abstract

The invention discloses a clamping device and a clamp, and the clamping device comprises a seat body which is provided with a working cavity; the clamping piece comprises a driving end and a clamping end which are connected, the driving end is located in the working cavity, and the clamping end is used for abutting against and fixing an object to be clamped; the adjusting part is installed in the working cavity, the adjusting part, the driving end and the working cavity are matched to form a driving cavity, the driving cavity is used for containing a working medium, the working medium is used for pushing the driving end to move so that the clamping end can abut against an object to be clamped, and when the working medium is discharged from the driving cavity, the driving end can abut against the adjusting part so as to loosen the object to be clamped; in the working cavity, the position of the adjusting piece can be adjusted so as to change the gap between the clamping end and the object to be clamped in the loosening state. The clamping device is applied to the clamping device.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, and in particular to a clamping device and a clamp. Background Art

[0002] The clamp is a high-performance functional component used in conjunction with rolling linear guides. It is widely used in CNC machine tools, automated production lines and other mechanical equipment that require high precision and high stability. Because the clamp has a strong clamping force, it can effectively prevent vibration during operation and achieve precise positioning. For example, in linear motor-driven machine tools, the clamp can be used to fix the workbench to prevent vibration and improve processing accuracy; in glass double-edged machines, the clamp can be used to clamp the glass plate to ensure stability and safety during processing.

[0003] Among them, the types of clamps are classified into hydraulic clamps or pneumatic clamps. Compared with pneumatic clamps, hydraulic clamps have the advantages of stable and strong clamping force and less movement of objects when clamping objects. However, the hydraulic clamps currently on the market have complex structures, high difficulty in parts processing, high costs, and higher requirements for installation space. The hydraulic clamps are too large and cannot be used in smaller installation spaces. And when clamping and positioning require a clamp with greater clamping force, the clamping force can only be increased by selecting a larger clamp or increasing the number of clamps, resulting in high production costs. In addition, when processing workpieces, the clamping device needs to be repeatedly positioned. After multiple clamping and loosening, the gap between the clamping device and the workpiece is prone to deviation, resulting in a decrease in the subsequent workpiece processing accuracy, affecting the product precision and quality. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a clamping device and a clamp, wherein the clamping device is applied to the clamp, which has a compact structure and a small size, and can be installed and used even when the installation space is small. In addition, the structure is simple and the manufacturing cost is low, which can reduce the production cost. At the same time, the clamp of the present application can provide strong holding force, stable clamping, high rigidity, ensure the processing requirements for strong holding force and processing accuracy, meet the processing needs of users, and by changing the size of the gap, the clamp can be applied to workpieces of various sizes, thereby improving the versatility of the clamp.

[0005] In a first aspect, a clamping device according to an embodiment of the present invention comprises: A seat body having a working cavity; The clamping member comprises a driving end and a clamping end connected to each other, wherein the driving end is located in the working cavity, and the clamping end is used to abut against and fix the object to be clamped; An adjusting member is installed in the working chamber. The adjusting member, the driving end and the working chamber cooperate to form a driving chamber. The driving chamber is used to accommodate a working medium. The working medium is used to push the driving end to move so that the clamping end abuts against the object to be clamped. When the working medium is discharged from the driving chamber, the driving end can abut against the adjusting member to release the object to be clamped. In the working chamber, the adjusting member can be positionally adjusted to change the gap between the clamping end and the object to be clamped in a loosened state.

[0006] The clamping device according to the embodiment of the present invention has at least the following beneficial effects: by adjusting the position of the member in the working chamber to change the gap between the clamping end of the clamping member and the object to be clamped, it has high flexibility and adaptability, can meet the clamping of guide rails of different sizes, and improves the versatility of the clamp. The specific working principle is: when the working medium continues to enter and fill the driving chamber, the working medium pushes the driving end of the clamping member to move, so that the clamping end moves toward the object to be clamped, so that the gap between the clamping end and the object to be clamped gradually decreases until the clamping member clamps the object to be clamped. When the object is processed, the working medium is discharged. At this time, the driving end is reset and drives the clamping end away from the object. When the clamping end is separated from the object, the object can be in a loose state, and the driving end continues to approach the adjusting member and finally abuts against the adjusting member. Among them, the gap between the clamping end of the clamping member and the object to be clamped can be adjusted by adjusting the position of the adjusting member in the working chamber, so as to meet the fixation of workpieces of different sizes, and improve the versatility of the clamp. It is understandable that if the size of the object to be clamped is larger than the distance between the two clamping ends, the user can adjust the position of the adjusting member in the working chamber to increase the distance between the two clamping ends to meet the clamping and fixing of the object of the current size. That is, when the size of the object to be clamped changes, the clamping device can be easily adjusted to adapt to objects of different sizes by adjusting the position of the adjusting member, which improves the versatility and flexibility of the clamping device. There is no need to replace the entire clamping device or clamping member. Only the position of the adjusting member can be adjusted to adapt to objects of different sizes. By adjusting the gap to adapt to objects of different sizes, the need for frequent replacement of the clamping device or clamping member is avoided, thereby reducing production costs and maintenance costs. And the gap size between the clamping end and the object to be clamped can be accurately controlled, which is particularly important for application scenarios that require strict control of the clamping force or gap, such as precision manufacturing, automated assembly, etc. In addition, an appropriate gap can ensure that the clamping end can be evenly distributed when applying the clamping force, avoiding excessive local stress that causes damage to the object or poor clamping effect. By adjusting the gap, the clamping effect can be optimized and the stability and reliability of the clamping can be improved. In some cases, too tight clamping may cause damage to the surface of the object being clamped. By adjusting the gap, the pressure of the clamping end on the object can be reduced, thus protecting the surface of the object from damage.

[0007] It should be noted that the working medium may be hydraulic oil or other media. This application does not specifically limit the type of working medium, and the user may choose according to actual conditions.

[0008] According to a clamp of an embodiment of the present invention, the adjusting member comprises an outer ring groove, the outer ring groove is located on a side of the adjusting member close to the driving end, the outer ring groove is open toward the driving end, and the outer ring groove is used to form a driving cavity; And / or, the adjusting member includes a boss, the boss is located on a side of the adjusting member close to the driving end, the adjusting member abuts against the driving end through the top of the boss, and the gap around the boss is used to form the driving cavity.

[0009] According to a clamp of an embodiment of the present invention, an adjusting member has a first groove, the first groove is located on the side of the adjusting member close to the driving end, the first groove is used to form a driving cavity, the adjusting member has a gas-liquid boosting device, the gas-liquid boosting device has a connecting hole connected to the driving cavity, and the connecting hole is located at the bottom of the first groove.

[0010] According to a clamp of an embodiment of the present invention, the adjusting member and / or the driving end is provided with a positioning ring groove, the positioning ring groove is sleeved with a sealing ring and a sealing ring, and the sealing ring and the sealing ring are used to abut against the cavity wall of the working cavity for sealing.

[0011] According to a clamp of an embodiment of the present invention, a working chamber is provided with an elastic member, the elastic member is located at a side of the driving end away from the adjusting member, and the elastic member is used to drive the driving end to approach and abut against the adjusting member.

[0012] According to a clamp of an embodiment of the present invention, the working medium is hydraulic oil, the adjusting member has an oil supply circuit for providing the hydraulic oil, and the oil supply circuit is connected to a gas-liquid boosting device.

[0013] According to a clamp of an embodiment of the present invention, the number of the clamping members and the adjusting members is a plurality of pairs, and a pair of the clamping members clamps the object to be clamped.

[0014] According to a clamp of an embodiment of the present invention, the seat body has a clamping cavity, and the side wall of the clamping cavity is provided with a clamping piece.

[0015] According to a clamp of an embodiment of the present invention, the working medium is hydraulic oil, the seat body has an oil supply circuit for providing hydraulic oil, and the oil supply circuit is connected to a gas-liquid booster device.

[0016] In a second aspect, a clamp according to an embodiment of the present invention uses the above-mentioned clamping device.

[0017] A clamp according to an embodiment of the present invention has at least the following beneficial effects: by adjusting the position of the member in the working chamber to change the gap between the clamping end of the clamping member and the object to be clamped, it has high flexibility and adaptability, can meet the clamping of guide rails of different sizes, and improves the versatility of the clamp. The specific working principle is: when the working medium continues to enter and fill the driving chamber, the working medium pushes the driving end of the clamping member to move, so that the clamping end moves toward the object to be clamped, so that the gap between the clamping end and the object to be clamped gradually decreases until the clamping member clamps the object to be clamped. When the object is processed, the working medium is discharged. At this time, the driving end is reset and drives the clamping end away from the object. When the clamping end is separated from the object, the object can be in a loose state, and the driving end continues to approach the adjusting member and finally abuts against the adjusting member. Among them, the gap between the clamping end of the clamping member and the object to be clamped can be adjusted by adjusting the position of the adjusting member in the working chamber, so as to meet the fixation of workpieces of different sizes, and improve the versatility of the clamp. It is understandable that if the size of the object to be clamped is larger than the distance between the two clamping ends, the user can adjust the position of the adjusting member in the working chamber to increase the distance between the two clamping ends to meet the clamping and fixing of the object of the current size. That is, when the size of the object to be clamped changes, the clamping device can be easily adjusted to adapt to objects of different sizes by adjusting the position of the adjusting member, which improves the versatility and flexibility of the clamping device. There is no need to replace the entire clamping device or clamping member. Only the position of the adjusting member can be adjusted to adapt to objects of different sizes. By adjusting the gap to adapt to objects of different sizes, the need for frequent replacement of the clamping device or clamping member is avoided, thereby reducing production costs and maintenance costs. And the gap size between the clamping end and the object to be clamped can be accurately controlled, which is particularly important for application scenarios that require strict control of the clamping force or gap, such as precision manufacturing, automated assembly, etc. In addition, an appropriate gap can ensure that the clamping end can be evenly distributed when applying the clamping force, avoiding excessive local stress that causes damage to the object or poor clamping effect. By adjusting the gap, the clamping effect can be optimized and the stability and reliability of the clamping can be improved. In some cases, too tight clamping may cause damage to the surface of the object being clamped. By adjusting the gap, the pressure of the clamping end on the object can be reduced, thus protecting the surface of the object from damage.

[0018] It should be noted that the working medium may be hydraulic oil or other media. This application does not specifically limit the type of working medium, and the user may choose according to actual conditions.

[0019] The clamp of the present application has a compact structure and a small volume, and can be installed and used even when the installation space is small. In addition, the structure is simple and the manufacturing cost is low, which can reduce the production cost. At the same time, the clamp of the present application can provide strong holding force, stable clamping, high rigidity, ensure the processing requirements for strong holding force, and meet the processing requirements of users.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a cross-sectional view of a clamping device according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of the area marked A; Figure 3 This is a structural exploded view of a clamping device according to an embodiment of the present invention; Figure 4 A structural diagram of an adjusting member and a clamping member according to an embodiment of the present invention; Figure 5 A perspective view of a clamping device according to an embodiment of the present invention; Figure 6 It is an isometric view of a clamping device according to an embodiment of the present invention; Figure 7 This is an exploded view of an embodiment of the present invention in which the piston rod is arranged on the oil supply line; Figure 8 This is a structural diagram of an embodiment of the present invention in which multiple clamping members are provided.

[0022] Description of reference numerals: Workpiece 1; Seat body 100; working chamber 110; driving chamber 120; oil supply passage 130; clamping chamber 140; Clamping member 200; driving end 210; clamping end 220; Adjusting member 300; outer ring groove 310; boss 320; first groove 330; communicating hole 340; Positioning ring groove 400; sealing ring 410; sealing ring 420; Piston rod 500. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of the first or the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figures 1 to 6 , an embodiment of the present invention provides a clamping device.

[0028] Specifically, as shown in the figure, the clamping device includes a base body 100, which has a working chamber 110; a clamping member 200, which includes a connected driving end 210 and a clamping end 220, the driving end 210 is located in the working chamber 110, and the clamping end 220 is used to abut and fix the object to be clamped; an adjusting member 300, which is installed in the working chamber 110, and the adjusting member 300, the driving end 210 and the working chamber 110 cooperate to form a driving chamber 120, and the driving chamber 120 is used to accommodate a working medium, and the working medium is used to push the driving end 210 to move so that the clamping end 220 abuts against the object to be clamped, and when the working medium is discharged from the driving chamber 120, the driving end 210 can abut against the adjusting member 300 to loosen the object to be clamped; in the working chamber 110, the adjusting member 300 can be adjusted in position to change the gap between the clamping end 220 and the object to be clamped in the loosened state.

[0029] The seat body 100 has a clamping cavity 140 , and a clamping member 200 is disposed on a side wall of the clamping cavity 140 .

[0030] By adjusting the position of the adjusting member 300 in the working chamber 110 to change the gap between the clamping end 220 of the clamping member 200 and the object to be clamped, the clamping member 200 has high flexibility and adaptability, can meet the clamping of guide rails of different sizes, and improves the versatility of the clamp. The specific working principle is: when the working medium continues to enter and fill the driving chamber 120, the working medium pushes the driving end 210 of the clamping member 200 to move, so that the clamping end 220 moves toward the object to be clamped, so that the gap between the clamping end 220 and the object to be clamped gradually decreases until the clamping member 200 clamps the object to be clamped. When the object is processed, the working medium is discharged. At this time, the driving end 210 is reset and drives the clamping end 220 away from the object. When the clamping end 220 is separated from the object, the object can be in a loose state, and the driving end 210 continues to approach the adjusting member 300 and finally abuts against the adjusting member 300. Among them, the gap between the clamping end 220 of the clamping member 200 and the object to be clamped can be adjusted by adjusting the position of the adjusting member 300 and the working chamber 110, so as to meet the fixation of workpieces 1 of different sizes, thereby improving the versatility of the clamp. It is understandable that if the size of the object to be clamped is greater than the distance between the two clamping ends, the user can increase the distance between the two clamping ends by adjusting the position of the adjusting member 300 in the working chamber 110 to meet the clamping and fixing of the object of the current size. That is, when the size of the object to be clamped changes, by adjusting the position of the adjusting member 300, the clamping device can be easily adjusted to adapt to objects of different sizes, thereby improving the versatility and flexibility of the clamping device, without replacing the entire clamping device or the clamping member 200, only the position of the adjusting member 300 can be adjusted to adapt to objects of different sizes, and by adjusting the gap to adapt to objects of different sizes, the need for frequent replacement of the clamping device or the clamping member 200 is avoided, thereby reducing production costs and maintenance costs. And the size of the gap between the clamping end 220 and the object to be clamped can be precisely controlled, which is particularly important for application scenarios that require strict control of the clamping force or gap, such as precision manufacturing, automated assembly, etc. In addition, an appropriate gap can ensure that the clamping end 220 can be evenly distributed when applying the clamping force, avoiding excessive local stress that causes damage to the object or poor clamping effect. By adjusting the gap, the clamping effect can be optimized and the stability and reliability of the clamping can be improved. In some cases, over-tight clamping may cause damage to the surface of the object to be clamped. By adjusting the gap, the pressure of the clamping end 220 on the object can be reduced, thereby protecting the surface of the object from damage.

[0031] According to some embodiments of the present application, as shown in the figure, the present application provides a first embodiment of the adjustment member 300. Specifically, the adjustment member 300 includes an outer ring groove 310, which is located on the side of the adjustment member 300 close to the driving end 210, and the outer ring groove 310 is open toward the driving end 210, and the outer ring groove 310 is used to form the driving cavity 120.

[0032] Alternatively, the adjusting member 300 includes a boss 320 , which is located on the side of the adjusting member 300 close to the driving end 210 , and the adjusting member 300 abuts against the driving end 210 through the top of the boss 320 , and the gap between the boss 320 and the inner wall of the working chamber 110 cooperates to form the driving chamber 120 .

[0033] According to some embodiments of the present application, as shown in the figure, the present application provides a second embodiment of the adjustment member 300. Specifically, the adjustment member 300 has a first groove 330, the first groove 330 is located on the side of the adjustment member 300 close to the driving end 210, the first groove 330 is used to form the driving chamber 120, further, the groove bottom of the first groove 330 is provided with a connecting hole 340, the connecting hole 340 is connected with the working chamber 110, the connecting hole 340 can be used as an oil supply path 130, and hydraulic oil can be input into the working chamber 110 through the connecting hole 340 to achieve the purpose of pushing the clamping member 200 to move.

[0034] According to some embodiments of the present application, the seat body 100 has an oil supply circuit 130 for providing hydraulic oil, and the adjustment member 300 has a gas-liquid pressurizing device. Figure 1 As shown, the adjusting member 300 is provided with a connecting hole 340, and the adjusting member 300 is provided with a piston rod 500, and one end of the piston rod 500 is connected to the connecting hole 340. The specific working principle is: the user pre-inputs a certain amount of hydraulic oil into the driving chamber 120, and when the piston rod 500 starts to move, the hydraulic oil in the driving chamber 120 is squeezed. Since the space of the driving chamber 120 is small, the piston rod pushes the hydraulic oil in the driving chamber 120, and the hydraulic oil in the driving chamber 120 is squeezed. The area ratio of the two pistons (i.e., equivalent to the piston rod 500 and the clamping member 200 of the present application) produces a pressure ratio (pressurization ratio), (pressure ratio*gas driving pressure=output pressure), achieving the function of gas-liquid conversion and increasing hydraulic pressure, and the high-pressure hydraulic oil pushes the clamping member 200 to produce displacement to clamp the workpiece 1. When the gas pressure direction is switched, the piston rod 500 retreats, the hydraulic pressure decreases, and the clamping member 200 resets the clamping member 200 under the rebound action of the elastic member to release the clamping workpiece 1.

[0035] Alternatively, the seat body 100 has an oil supply circuit 130 for providing hydraulic oil. Optionally, when a gas-liquid booster device is provided on the oil supply circuit 130, a pneumatic hydraulic pump is provided outside the clamping device to provide high-pressure hydraulic oil for the clamping device, thereby providing a higher output pressure for the clamping device, thereby improving the clamping force of the clamping device, meeting the need for a large clamping force, ensuring stable clamping of the object, and ensuring the processing accuracy of the object.

[0036] Alternatively, the seat body 100 has an oil supply passage 130 for providing hydraulic oil. Figure 7As shown, a piston rod 500 may be provided on the oil supply circuit 130. Specifically, the user inputs a certain amount of hydraulic oil in advance, and then the piston rod 500 is provided on the oil supply circuit 130. The piston rod 500 is powered by an external air pressure device. When the piston rod 500 moves in the oil supply circuit 130, the piston rod 500 pushes the hydraulic oil, and the hydraulic oil is squeezed. The area ratio of the two pistons (i.e., equivalent to the piston rod and the clamping member 200 of the present application) produces a pressure ratio (pressurization ratio), (pressure ratio*gas driving pressure=output pressure), to achieve the function of gas-liquid conversion and increase the hydraulic pressure. The high-pressure hydraulic oil pushes the clamping member 200 to produce displacement, thereby clamping the workpiece 1. When the air pressure direction is switched, the piston rod retreats, the hydraulic pressure drops, and the clamping member 200 is reset under the rebound action of the elastic member, thereby releasing the clamping workpiece 1. It should be noted that when the seat body 100 is provided with the oil supply passage 130 , the adjusting member 300 is not provided with the communicating hole 340 , or the communicating hole 340 of the adjusting member is blocked with a plug.

[0037] It is understandable that by utilizing gas-to-liquid conversion to provide high-pressure hydraulic oil to the clamping device, a higher output pressure can be provided to the clamping device to increase the clamping force of the clamping device, meet the need for large clamping force, ensure stable clamping of the object, and ensure the processing accuracy of the object.

[0038] According to some embodiments of the present application, the adjustment member 300 and / or the driving end 210 is provided with a positioning ring groove 400, and the positioning ring groove 400 is provided with a sealing ring 410 and a sealing ring 420, and the sealing ring 410 and the sealing ring 420 are used to abut against the cavity wall of the working cavity 110 for sealing, so as to ensure the sealing of the working medium and avoid leakage or seepage of the working medium when the object is repeatedly clamped or clamped for a long time, thereby affecting the stability of the clamping force of the clamp and avoiding affecting the processing accuracy of the object.

[0039] According to some embodiments of the present application, the working chamber 110 is provided with an elastic member, which is located on the side of the driving end 210 away from the adjusting member 300 , and is used to drive the driving end 210 to approach and abut against the adjusting member 300 .

[0040] It can be understood that when the working medium is discharged from the driving chamber 120, due to the pressure drop in the driving chamber 120, under the elastic recovery action of the elastic member, the elastic member pushes the clamping member 200 to reset, so that the driving end 210 gradually approaches the adjusting member 300, and finally makes the driving end 210 abut against the adjusting member 300. When the driving end 210 is completely abutted against the adjusting member 300, the clamping member 200 stops moving. At this time, the clamping end 220 has been released from the object and the object can be taken out.

[0041] It should be noted that the present application does not specifically limit the type of the elastic member, and the elastic member may be a component with deformation recovery capability such as a spring.

[0042] According to some embodiments of the present application, the number of the clamping members 200 and the adjusting members 300 is a plurality of pairs, and a pair of the clamping members 200 clamps the object to be clamped.

[0043] It is understandable that the number of the clamping members 200 and the adjusting members 300 can be adjusted according to the actual length of the object. As shown in the figure, the clamping members 200 are arranged on both sides of the object, and the two clamping members 200 form a pair to hold and fix the object together. Figure 8 As shown, when the user has certain requirements on the clamping force of the object, the number of the clamping members 200 can be increased to improve the clamping force of the object, ensure the clamping stability of the object, ensure the processing accuracy, and meet the needs of the user.

[0044] It should be noted that the working medium may be hydraulic oil or other media, and the present application does not specifically limit the type of the working medium, and the user may select according to actual conditions. Preferably, the working medium is hydraulic oil.

[0045] The present application also provides a clamp using the above clamping device.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clamping device, characterized in that: include: A seat body having a working cavity; A clamping member, comprising a driving end and a clamping end connected to each other, wherein the driving end is located in the working cavity, and the clamping end is used to abut against and fix an object to be clamped; An adjusting member is installed in the working chamber, wherein the adjusting member, the driving end and the working chamber cooperate to form a driving chamber, wherein the driving chamber is used to accommodate a working medium, and the working medium is used to push the driving end to move so that the clamping end abuts against the object to be clamped, and when the working medium is discharged from the driving chamber, the driving end can abut against the adjusting member to release the object to be clamped; In the working chamber, the adjusting member can be positionally adjusted to change the gap between the clamping end and the object to be clamped in a loosened state.

2. The clamping device according to claim 1, characterized in that The adjusting member comprises an outer ring groove, the outer ring groove is located on a side of the adjusting member close to the driving end, the outer ring groove is open toward the driving end, and the outer ring groove is used to form the driving cavity; And / or, the adjusting member includes a boss, the boss is located on a side of the adjusting member close to the driving end, the adjusting member abuts against the driving end through the top of the boss, and the gap around the boss is used to form the driving cavity.

3. The clamping device according to claim 1, characterized in that: The adjusting member has a first groove, which is located on the side of the adjusting member close to the driving end. The first groove is used to form the driving cavity. The adjusting member has a gas-liquid boosting device, which has a connecting hole connected to the driving cavity, and the connecting hole is located at the bottom of the first groove.

4. The clamping device according to claim 1, characterized in that: The adjusting member and / or the driving end is provided with a positioning ring groove, and the positioning ring groove is sleeved with a sealing ring and a sealing ring, and the sealing ring and the sealing ring are used to abut against the cavity wall of the working cavity for sealing.

5. The clamping device according to claim 1, characterized in that: The working chamber is provided with an elastic member, the elastic member is located at a side of the driving end away from the adjusting member, and the elastic member is used to drive the driving end to approach and abut against the adjusting member.

6. The clamping device according to claim 1, characterized in that: The working medium is hydraulic oil, the adjusting component has an oil supply circuit for providing the hydraulic oil, and the oil supply circuit is connected to a gas-liquid boosting device.

7. The clamping device according to claim 1, characterized in that: The number of the clamping members and the adjusting members is a plurality of pairs, and a pair of the clamping members clamps the object to be clamped.

8. The clamping device according to claim 7, characterized in that The seat body has a clamping cavity, and the clamping piece is arranged on the side wall of the clamping cavity.

9. The clamping device according to claim 1, characterized in that: The working medium is hydraulic oil, the seat body has an oil supply circuit for providing the hydraulic oil, and the oil supply circuit is connected to a gas-liquid boosting device.

10. A clamp, characterized in that: A clamping device comprising any one of claims 1 to 9.

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