Self-adaptive locking clamp

Abstract

The utility model discloses a self-adaptive locking clamp, and relates to the technical field of clamps, the self-adaptive locking clamp comprises a cylinder body, a piston rod, a locking block, an extrusion ring, a reset piece, a pressing arm and a connecting arm; according to the self-adaptive locking clamp, the piston rod drives the pressing arm to move, the pressing arm clamps a workpiece on a workbench or loosens the workpiece, the inner side and the outer side of the locking block and the inner circumferential face of the extrusion ring are in taper design, and the taper of a third conical face of the inner circumference of the extrusion ring is smaller than that of a second conical face of the inner side of the locking block; the locking function is formed by means of the difference value of different tapers, locking can be conducted at any position within the axial length range of the third conical face, automatic height compensation within a certain range can be met, and then the clamp can accurately clamp a workpiece.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to an adaptive locking clamp. Background Technology

[0002] The locking mechanism of existing telescopic clamps can only lock properly when the piston rod moves to a fixed position. That is, the locking height or locking position of the telescopic cylinder piston rod is fixed. In actual operation, when there are error fluctuations in the working surface of the object to be clamped or held and in contact with the clamp, the locking position cannot automatically adapt to the height of the current working surface, which will cause the clamp to fail to lock properly or to produce clamping misalignment after locking. Utility Model Content

[0003] This invention provides an adaptive locking fixture to solve the problem in the prior art where the locking position of the fixture cannot automatically adapt to the working surface and there are errors.

[0004] This utility model discloses an adaptive locking clamp, including a cylinder, a piston rod, a locking block, a compression ring, a reset component, a pressure arm, and a connecting arm. The piston rod is slidably disposed within the cylinder, and its outer circumferential surface includes a cylindrical surface of equal diameter connected along its axial direction and a first conical surface. The locking block is located on the radial side of the piston rod, and a second conical surface is provided on the side of the locking block facing the piston rod. The second conical surface can wedge with the first conical surface to realize the relative radial movement between the locking block and the piston rod. The compression ring is sleeved on the piston rod and compresses along the axial direction of the piston rod. The pressure ring is located on one side of the locking block. The inner circumferential surface of the pressure ring includes a first inclined surface and a third conical surface that are connected along the piston rod axial direction. A fourth conical surface is provided on the side of the locking block away from the piston rod. The first inclined surface can slide in contact with the locking block, and the third conical surface can wedge with the fourth conical surface. The taper of the third conical surface is smaller than that of the second conical surface. The two ends of the reset member are respectively connected to the cylinder body and the pressure ring. The reset member has a reset force on the pressure ring along the piston rod axial direction. One end of the pressure arm is hinged to the piston rod, and the other end is used to clamp the workpiece. The two ends of the connecting arm are respectively hinged to the cylinder body and the pressure arm.

[0005] The beneficial effects of this utility model are:

[0006] This utility model's adaptive locking fixture uses a piston rod to drive a pressure arm, which clamps the workpiece onto the worktable or releases it. The fixture's reset component applies a downward force to the compression ring. During the piston rod's extension, the reset component drives the first inclined surface of the compression ring to press against the locking block. Because the piston rod and the locking block have a first and second conical surface that can slide relative to each other in a wedge shape, the locking block can be displaced horizontally radially towards the piston rod's axis under the action of the reset component until the fourth conical surface of the locking block contacts the third conical surface of the compression ring. At this point, the downward displacement space of the piston rod completely disappears, thus achieving the purpose of locking and limiting. The inner and outer surfaces of the locking block and the inner circumference of the compression ring are all tapered. Furthermore, the taper of the third conical surface on the inner circumference of the compression ring is smaller than the taper of the second conical surface on the inner side of the locking block. Utilizing the difference in taper, a stopping function is formed, enabling locking at any position within the axial length range of the third conical surface. This satisfies automatic height compensation within a certain range, allowing the fixture to accurately clamp the workpiece. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0008] Figure 1 This is the first vertical cross-sectional view of the adaptive locking fixture of this application;

[0009] Figure 2 This is the second vertical cross-sectional view of the adaptive locking fixture of this application;

[0010] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0011] Figure 4 This is a schematic diagram of the locking block and the annular connector in this application;

[0012] Figure 5 This is a schematic diagram of the first working state of the adaptive locking fixture of this application;

[0013] Figure 6 This is a schematic diagram of the second working state of the adaptive locking fixture of this application;

[0014] Figure 7 This is a schematic diagram of the third working state of the adaptive locking fixture of this application;

[0015] Figure 8This is a schematic diagram of the fourth working state of the adaptive locking fixture of this application;

[0016] Figure 9 This is a schematic diagram of the fifth working state of the adaptive locking fixture of this application;

[0017] Figure 10 This is a schematic diagram of the sixth working state of the adaptive locking fixture of this application;

[0018] Figure 11 This is a schematic diagram of the seventh working state of the adaptive locking fixture of this application;

[0019] Figure 12 This is a schematic diagram of the eighth working state of the adaptive locking fixture of this application;

[0020] The annotations in the attached figures are explained as follows:

[0021] 100. Cylinder block; 101. Partition plate; 102. First chamber; 103. Second chamber; 104. Rod chamber; 105. Rodless chamber; 106. Second sub-chamber; 107. First sub-chamber; 108. First air port; 109. Second air port; 1010. Third air port; 1011. Support ring; 1012. Cylinder barrel; 1013. Bottom cover; 1014. Top cover;

[0022] 200. Piston rod; 201. Cylindrical surface of equal diameter; 202. First conical surface;

[0023] 300. Locking block; 301. Second conical surface; 302. Fourth conical surface; 303. Second inclined surface; 304. Inner annular surface of equal diameter; 305. Resettling groove; 306. Annular connector;

[0024] 400, extrusion ring; 401, first inclined surface; 402, third conical surface;

[0025] 500. Reset component;

[0026] 600, pressure arm; 601, elastic pressure head;

[0027] 700, Connecting arm;

[0028] 800. Workpiece;

[0029] 900, Piston. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0031] Example:

[0032] like Figure 1As shown, this embodiment discloses an adaptive locking fixture. The adaptive locking fixture includes a cylinder body 100, a piston rod 200, a locking block 300, a compression ring 400, a reset member 500, a pressure arm 600, and a connecting arm 700.

[0033] like Figure 2 As shown, the upper end of the piston rod 200 is hinged to one end of the pressure arm 600, and the other end of the pressure arm 600 is used to clamp the workpiece 800 on the worktable. In some preferred embodiments, the other end of the pressure arm 600 is provided with an elastic pressure head 601 facing the workpiece. The elastic pressure head 601 is made of an elastic material to avoid damaging the product. One end of the connecting arm 700 is hinged to the cylinder body 100, and the other end is hinged to the middle position of the pressure arm 600. The connecting arm 700 allows the pressure arm 600 to clamp or release the workpiece 800 when the piston rod 200 extends or retracts. When the piston rod 200 extends, the pressure arm 600 moves toward the workpiece and finally clamps the workpiece. When the piston rod 200 retracts, the pressure arm 600 rotates and releases the workpiece.

[0034] like Figure 2 As shown, the cylinder body 100 includes a cylinder barrel 1012, a bottom cover 1013, and a top cover 1014. The cylinder barrel 1012 is a hollow cylindrical tube open at both ends. The bottom cover 1013 and the top cover 1014 are respectively located at the upper and lower open ends of the cylinder barrel 1012, forming a closed cylinder body 100. A partition 101 is horizontally arranged inside the cylinder body 100, dividing the interior of the cylinder body 100 into a first cavity 102 and a second cavity 103. The partition 101 is provided with a sliding hole for the piston rod 200 to slide axially through. A piston 900 is provided inside the first cavity 102. The lower end of the piston rod 200 is connected to the piston 900. The piston 900 divides the first cavity 102 into an upper and lower rod cavity 104 and a rodless cavity 105. The piston rod 200 passes through a sliding hole, a second cavity 103 and an upper cover 1014, and extends to the outside of the cylinder body 100.

[0035] like Figure 3 As shown, the outer circumferential surface of the piston rod 200 includes a cylindrical surface 201 of equal diameter and a first conical surface 202. The cylindrical surface 201 of equal diameter has a certain axial length. The first conical surface 202 is connected to the cylindrical surface 201 of equal diameter in the axial direction of the piston rod 200. During the upward extension of the piston rod 200, the cylindrical surface 201 of equal diameter first slides into contact with the locking block 300, and then the first conical surface 202 slides into contact with the locking block 300. The first conical surface 202 is formed by a conical segment at the middle position of the piston rod 200. The small end of the conical segment is away from the locking block 300, that is, the small end of the conical segment faces the piston 900.

[0036] like Figure 2 and 3As shown, the locking block 300 is disposed within the cylinder body 100, specifically within the second cavity 103. Along the radial direction of the piston rod 200, the locking block 300 is located on one side of the piston rod 200. Under the push of the compression ring 400, the locking block 300 can move radially toward the piston rod 200. Along the radial direction of the piston rod 200, the locking block 300 has a second conical surface 301 on its inner side facing the piston rod 200. The second conical surface 301 can wedge-fit with the first conical surface 202 on the piston rod 200, thereby allowing the locking block 300 to have space for displacement toward the axis of the piston rod 200. In this embodiment, the locking block 300 is provided with a second conical surface 301 and an equal-diameter inner ring surface 304 on the inner side facing the piston rod 200. The second conical surface 301 and the equal-diameter inner ring surface 304 are connected in the axial direction of the piston rod 200. The second conical surface 301 is located on the side of the equal-diameter inner ring surface 304 away from the piston 900. When the equal-diameter inner ring surface 304 is in contact with the equal-diameter cylindrical surface 201 of the piston rod 200, the locking block 300 cannot move towards the axis of the piston rod 200.

[0037] like Figure 4 As shown, there can be one or more locking blocks 300. In this embodiment, it is preferred that there are two or more locking blocks 300 (two are shown in this embodiment). The two locking blocks 300 are spaced apart circumferentially along the piston rod 200, and the two locking blocks 300 can be closed to form a ring structure, which is called a locking ring. In this embodiment, it is preferred to design multiple locking blocks 300, which can improve the stability of the structure and the stability during locking.

[0038] like Figure 4 As shown, along the radial direction of the piston rod 200, each locking block 300 has a mounting groove 305 on the side opposite to the piston rod 200. An annular connector 306 is disposed within the mounting grooves 305 of all locking blocks 300. The annular connector 306 can circumferentially surround all locking blocks 300. The annular connector 306 connects multiple locking blocks 300, allowing them to be encircled by the annular connector 306 to form a ring structure, preventing the multiple locking blocks 300 from scattering outwards. In some preferred embodiments, the annular connector 306 is made of an elastic material. The elastic material of the annular connector 306 allows the multiple locking blocks 300 to shift a certain distance outwards from the axis of the piston rod 200 without scattering, facilitating the change of the inner diameter of the ring structure formed by the multiple locking blocks 300 under the influence of the piston rod 200 and the compression ring 400.

[0039] like Figure 2As shown, in some embodiments, a support ring 1011 is provided on the partition 101, extending axially toward the compression ring 400 along the piston rod 200. The support ring 1011 is located inside the second cavity 103 and is coaxially sleeved on the outer periphery of the piston rod 200. The upper end face of the support ring 1011 contacts the lower surface of the locking block 300, and the locking block 300 is supported by the support ring 1011.

[0040] like Figure 2 As shown, the compression ring 400 is slidably disposed in the second cavity 103 of the cylinder 100. The compression ring 400 divides the second cavity 103 into a first sub-cavity 107 and a second sub-cavity 106. The reset member 500 is disposed in the first sub-cavity 107, and the locking block 300 and the support ring 1011 are disposed in the second sub-cavity 106.

[0041] like Figure 2 As shown, the cylinder barrel 1012 of the cylinder body 100 is provided with a first air port 108 and a second air port 109. The first air port 108 is connected to the rodless chamber 105, and the second air port 109 is connected to the second sub-chamber 106. The second sub-chamber 106 is connected to the rod chamber 104 through a sliding hole on the partition plate 101. When air enters through the first air port 108, the piston 900 drives the piston rod 200 to move upward. When air enters through the second air port 109, the piston 900 drives the piston rod 200 to move downward, and at the same time, the compression ring 400 moves upward. In some preferred embodiments, the cylinder barrel 1012 of the cylinder body 100 is also provided with a third air port 1010. The third air port 1010 is connected to the first sub-chamber 107. After the locking action is completed, airflow can be introduced into the third air port 1010, so that the compression ring 400 has downward pressing pressure, further enhancing the locking effect.

[0042] like Figure 3As shown, the compression ring 400 is coaxially sleeved on the outer circumference of the piston rod 200. Along the axial direction of the piston rod 200, the compression ring 400 is located on the side of the locking block 300 opposite to the partition plate 101. The inner circumferential surface of the compression ring 400 includes a first inclined surface 401 and a third conical surface 402, which are connected axially to the piston rod 200. Along the radial direction of the piston rod 200, the locking block 300 is provided with a second inclined surface 303 and a fourth conical surface 302 on the side opposite to the piston rod 200. The second inclined surface 303 can wedge-fit the first inclined surface 401. The wedge-fit means that the second inclined surface 303 can fit tightly against the first inclined surface 401 and can slide relative to it. Along the axial direction of the piston rod 200, the fourth conical surface 302 of the locking block 300 and the third conical surface 402 of the compression ring 400 are located on both sides of the second inclined surface 303, and the third conical surface 402 of the compression ring 400 can wedge with the fourth conical surface 302 of the locking block 300. In some other embodiments, the locking block 300 may not have the second inclined surface 303. The top surface and outer surface of the locking block 300 can be rounded so that the contact position between the locking block 300 and the first inclined surface 401 is an arc contact. This can also achieve a smooth contact between the locking block 300 and the first inclined surface 401, and the inward displacement of the locking block 300 can be achieved by means of the slope of the first inclined surface 401.

[0043] In this embodiment, as Figure 3 As shown, the taper α of the third conical surface 402 is smaller than the taper β of the second conical surface 301. Thus, the difference between the different tapers can be used to form a stop function, restricting the retraction of the piston rod 200 and forming a locked state.

[0044] like Figure 2 As shown, the reset member 500 is disposed between the inner wall of the cylinder 100 and the compression ring 400. The two ends of the reset member 500 are connected to the cylinder 100 and the compression ring 400, respectively. The reset force direction of the reset member 500 is consistent with the axial direction of the piston rod 200. The reset member 500 provides a force to the compression ring 400 to move axially in the piston rod. In this embodiment, the reset member 500 can provide an elastic force to the compression ring 400 to move towards the locking block 300. The reset member 500 includes a spring, which is coaxially sleeved on the piston rod 200. The upper end of the spring abuts against the upper cover 1014 of the cylinder 100, and the lower end of the spring abuts against the compression ring 400. The extension and retraction direction of the spring is consistent with the axial direction of the piston rod 200.

[0045] like Figure 2 As shown, in this embodiment, annular sealing rings are provided between the piston 900 and the inner wall of the first cavity 102, between the compression ring 400 and the inner wall of the second cavity 103, and between the piston rod 200 and the compression ring 400. Annular wear-resistant plates are provided between the piston 900 and the inner wall of the first cavity 102, and between the compression ring 400 and the inner wall of the second cavity 103.

[0046] This embodiment also discloses a locking method for an adaptive locking fixture, including the use of an adaptive locking fixture, the locking method comprising:

[0047] In step S100, the piston rod 200 extends outward toward the cylinder body 100, and the equal-diameter cylindrical surface 201 of the piston rod 200 prevents the locking block 300 from moving radially toward the piston rod 200.

[0048] Step S200: As the piston rod 200 continues to extend, the first conical surface 202 of the piston rod 200 contacts the second conical surface 301 of the locking block 300 and forms a wedge fit, so that the locking block 300 has space to move toward the piston rod axis. Under the action of the reset force of the reset member 500, the locking block 300 is pushed by the first inclined surface 401 of the extrusion ring 400 and moves toward the piston rod 200 along the radial direction of the piston rod 200. The third conical surface 402 of the extrusion ring 400 slowly fits onto the locking block 300. As the extrusion ring 400 continues to slide down, the third conical surface 402 of the extrusion ring 400 comes into contact with the fourth conical surface 302 of the locking block 300 and forms a wedge fit, so that the pressure arm 600 clamps the workpiece and the piston rod 200 stops extending. The reset force of the reset member 500 restricts the piston rod 200 from retracting inward into the cylinder 100.

[0049] Step S300: When the piston rod 200 has not reached the predetermined extension position, the piston rod 200 continues to extend outward by a certain stroke so that the pressure arm 600 can tightly press the workpiece 800. At the same time, the locking block 300 continues to move toward the axis of the piston rod 200 under the guidance of the first conical surface 202. The third conical surface 402 of the compression ring 400 and the fourth conical surface 302 of the locking block 300 slide relative to each other under the action of the reset member 500.

[0050] The locking method in this embodiment is as follows:

[0051] like Figure 5 As shown, in the initial state, the piston 900 is in contact with the bottom cover 1013 (as shown in C1), the piston rod 200 is in the lowest position, the compression ring 400 is in the highest position (as shown in C2), the equal-diameter inner ring surface 304 on the locking block 300 is in contact with the equal-diameter cylindrical surface 201 of the piston rod 200, and the first inclined surface 401 of the compression ring 400 is in contact with the second inclined surface 303 of the locking block 300 (as shown in C3).

[0052] like Figure 6As shown, when the piston rod 200 needs to extend, the airflow enters the rodless chamber 105 from the first air port 108. The airflow pushes the piston 900 upward. Since the piston rod 200 is connected to the piston 900 through a screw, the piston rod 200 and the piston 900 move upward together. In the current state, the equal-diameter cylindrical surface 201 of the piston rod 200 is in contact with the equal-diameter inner ring surface 304 of the locking block 300 (as shown in C4). The locking block 300 has no space to move further toward the piston rod 200. Under the action of the reset force of the reset member 500, the equal-diameter inner ring surface 304 of the locking block 300 can only be tightly attached to the equal-diameter cylindrical surface 201 of the piston rod 200. Since the thrust of the piston 900 is greater than the reset force of the reset member 500, the piston rod 200 can move flexibly. The piston rod 200 drives the pressure arm 600 to move toward the workpiece.

[0053] like Figure 7 As shown, when the first conical surface 202 of the piston rod 200 moves to the position where it wedges with the second conical surface 301 of the locking block 300, a certain space is formed (as shown in C5), so that the locking block 300 can move horizontally inward along the radial direction of the piston rod 200 under the compression of the compression ring 400, and the first conical surface 202 and the second conical surface 301 fit together during the movement.

[0054] like Figure 8 As shown, the piston rod 200 continues to extend, and the locking block 300 is continuously compressed and contracted by the compression ring 400 until all the second conical surfaces 301 of the locking block 300 are completely in contact with and adhere to the first conical surface 202 of the piston rod 200. At the same time, the fourth conical surface 302 of the locking block 300 enters the range of the third conical surface 402 of the compression ring 400. The locking block 300 is further compressed until all gaps between the fourth conical surface 302 and the third conical surface 402 are eliminated (as shown in C6), thereby completely locking the piston rod 200. At this time, the pressure arm 600 presses down on the workpiece, realizing the clamping of the workpiece.

[0055] like Figure 8 As shown, Figure 8 The position shown is the lowest locking position. The inner top surface of the compression ring 400 and the upper surface of the locking block 300 have a first predetermined distance H1, and the piston 900 and the lower surface of the partition 101 have a second predetermined distance H2. This second predetermined distance H2 is the automatic height compensation range distance of the adaptive locking fixture. After the locking action is completed, airflow can be introduced into the third air port 1010, so that the compression ring 400 has downward pressure, further enhancing the locking effect.

[0056] like Figure 9As shown, if there is an error in the working surface, the piston rod 200 will continue to rise and contact the working surface; the first conical surface 202 of the piston rod 200 will rise, so that the locking block 300 can continue to retract inward, and the compression ring 400 will continue to descend under the drive of the reset member 500 until the piston rod 200 is completely locked. At this time, the pressure arm 600 is in the correct clamping position. Figure 9 The position shown is the highest locking position. As shown in C7, the top surface of the locking block 300 is in contact with the inner top surface of the compression ring 400. At the same time, as shown in C8, the upper surface of the piston 900 is in contact with the lower surface of the partition 101.

[0057] like Figure 10 As shown, if the piston rod 200 needs to retract, airflow is introduced into the second air port 109, and the airflow pushes the compression ring 400 and the piston 900 to move in opposite directions simultaneously.

[0058] like Figure 11 As shown, when the compression ring 400 and the piston 900 move in opposite directions, since the third cone surface 402 of the compression ring 400 has risen and disengaged from the fourth cone surface 302 of the locking block 300, the piston rod 200 uses the first cone surface 202 to push open the second cone surface 301 of the locking block 300, causing the locking block 300 to move horizontally outward in the radial direction (as shown in C9) until the first cone surface 202 completely disengages from the second cone surface 301, and the equal-diameter inner ring surface 304 on the locking block 300 and the equal-diameter cylindrical surface 201 of the piston rod 200 are once again in contact, completing the release and unlocking action;

[0059] like Figure 12 As shown, piston 900 moves to its lowest position, contacts bottom cover 1013, and stops moving (as shown in C). 10 As shown), the compression ring 400 is pushed upward by the airflow and contacts the bottom surface of the upper cover 1014, where it stops moving (as shown in C). 11 (As shown), reset to the initial state.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adaptive locking clamp, characterized in that, It includes a cylinder body (100), a piston rod (200), a locking block (300), a compression ring (400), a reset component (500), a pressure arm (600), and a connecting arm (700); The piston rod (200) is slidably disposed in the cylinder (100), and the outer peripheral surface of the piston rod (200) includes a cylindrical surface (201) of equal diameter connected along its axial direction and a first conical surface (202); The locking block (300) is located on one side of the piston rod. The locking block (300) has a second conical surface (301) on the side facing the piston rod (200). The second conical surface (301) can wedge with the first conical surface (202) to realize the relative movement of the locking block (300) and the piston rod (200) in the radial direction of the piston rod. The compression ring (400) is sleeved on the piston rod (200). Along the axial direction of the piston rod, the compression ring (400) is located on one side of the locking block (300). The inner circumferential surface of the compression ring (400) includes a first inclined surface (401) and a third conical surface (402) connected along the axial direction of the piston rod. The locking block (300) has a fourth conical surface (302) on the side away from the piston rod (200). The first inclined surface (401) can slide in contact with the locking block (300), and the third conical surface (402) can wedge with the fourth conical surface (302). The taper of the third conical surface (402) is smaller than the taper of the second conical surface (301). The two ends of the reset member (500) are respectively connected to the cylinder body (100) and the compression ring (400), and the reset member (500) has a reset force on the compression ring (400) along the piston rod axis; One end of the pressure arm (600) is hinged to the piston rod (200), and the other end is used to clamp the workpiece (800); the two ends of the connecting arm (700) are respectively hinged to the cylinder body (100) and the pressure arm (600).

2. The adaptive locking clamp according to claim 1, characterized in that, The locking block (300) has a fourth conical surface (302) and a second inclined surface (303) connected along the piston rod axially on the side opposite to the piston rod. The second inclined surface (303) slides in contact with the first inclined surface (401). Along the piston rod axially, the third conical surface (402) and the fourth conical surface (302) are located on both sides of the second inclined surface (303).

3. The adaptive locking clamp according to claim 2, characterized in that, The locking block (300) is provided with a second conical surface (301) and an equal-diameter inner ring surface (304) on the side facing the piston rod. The second conical surface (301) and the equal-diameter inner ring surface (304) are connected along the axial direction of the piston rod. The equal-diameter inner ring surface (304) can contact the equal-diameter cylindrical surface (201) of the piston rod (200).

4. The adaptive locking clamp according to claim 3, characterized in that, The plurality of locking blocks (300) are arranged circumferentially along the piston rod, and the plurality of locking blocks (300) form a ring structure.

5. The adaptive locking clamp according to claim 4, characterized in that, The locking block (300) has a mounting groove (305) on the side opposite to the piston rod. An annular connector (306) is disposed in the mounting groove (305) of the locking block. The annular connector (306) is used to connect multiple locking blocks (300). The annular connector (306) is made of an elastic material.

6. The adaptive locking clamp according to claim 1, characterized in that, The reset component (500) includes a spring, which is coaxially sleeved on the outer periphery of the piston rod (200). The two ends of the spring abut against the cylinder body (100) and the compression ring (400) respectively, and the extension and retraction direction of the spring is configured to be the axial direction of the piston rod.

7. The adaptive locking clamp according to any one of claims 1 to 6, characterized in that, The cylinder body (100) is provided with a partition (101) inside, which divides the interior of the cylinder body (100) into a first cavity (102) and a second cavity (103). The partition (101) is provided with a sliding hole, through which the piston rod (200) slides, and the piston rod (200) is connected to a piston (900) provided in the first cavity (102). The piston (900) divides the first cavity (102) into a rod cavity (104) and a rodless cavity (105). The rodless cavity (105) is connected to a first air port (108) provided on the cylinder body (100). The compression ring (400) is slidably disposed in the second cavity (103), and the compression ring (400) divides the second cavity (103) into a first sub-cavity (107) and a second sub-cavity (106). The reset member (500) is disposed in the first sub-cavity (107). The locking block (300) is disposed in the second sub-cavity (106), and the second sub-cavity (106) is connected to the rod cavity (104) and the second air port (109) disposed on the cylinder (100).

8. The adaptive locking clamp according to claim 7, characterized in that, The cylinder body (100) is provided with a third air port (1010) that communicates with the first sub-chamber (107).

9. The adaptive locking clamp according to claim 7, characterized in that, The partition (101) is provided with a support ring (1011) extending axially along the piston rod, the support ring (1011) being used to support the locking block (300) axially along the piston rod.

10. The adaptive locking clamp according to claim 1, characterized in that, An elastic pressure head (601) is provided on the other end of the pressure arm.

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