A flexible clamp

Abstract

The utility model relates to a kind of flexible clamps, for clamping cylindrical workpiece, flexible clamp includes two clamping jaws, two The clamping jaws are oppositely arranged;Transmission mechanism, it is set to one end of two The clamping jaws, the transmission mechanism is configured to be able to drive two The clamping jaws move towards each other or rotate away from each other, to clamp or loosen The cylindrical workpiece;And chuck, it is set to the inner side of two The clamping jaws towards each other, the chuck is hinged to the inner wall of two The clamping jaws, can swing relative to two The clamping jaws, chuck can be automatically adjusted angle when grabbing to be adapted with cylindrical workpiece (hydraulic cylinder) Therefore, so that the utility model flexible clamp can be applicable to different types of cylindrical workpiece, and it is strong in versatility, reduce the frequency of replacing gripper when clamping operation, improve clamping efficiency, and by chuck and the outer surface of cylindrical workpiece cooperation, can tightly clamp cylindrical workpiece, reduce the risk of falling, and it is more secure.

Description

Technical Field

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

[0002] With the increasing demand for large mining trucks, the load-bearing capacity of these trucks is increasing, which in turn places higher demands on the hydraulic cylinders in their cargo beds. During operation, damage to the hydraulic cylinders due to excessive loads is inevitable, affecting their working condition. Therefore, it is necessary to solve the problem of how to replace damaged hydraulic cylinders in a timely and efficient manner.

[0003] Currently, hydraulic mechanical grippers are generally used to replace damaged hydraulic cylinders in mine cars. They are mounted on a vehicle-mounted arm, and the machine is operated manually or automatically. Traditional hydraulic cylinder grippers can only grasp hydraulic cylinders compatible with their designed grippers, and are not applicable to all hydraulic cylinders. Traditional mechanical grippers require precise positioning during gripping, which is time-consuming and inefficient. Furthermore, traditional grippers are prone to slippage during gripping, leading to safety accidents and other safety issues.

[0004] Therefore, it is necessary to design a better fixture to solve the above problems. Utility Model Content

[0005] This utility model provides a flexible clamp that is applicable to different types of cylindrical workpieces, has strong versatility, and can firmly clamp cylindrical workpieces, reducing the risk of falling and improving safety.

[0006] This utility model provides a flexible clamp for clamping cylindrical workpieces. The flexible clamp includes: Two grippers, the two grippers being arranged opposite to each other; A transmission mechanism, disposed at one end of the two grippers, is configured to drive the two grippers to move toward or away from each other to clamp or release the cylindrical workpiece; and A chuck is disposed on the inner side of the jaws facing each other. The chuck is hinged to the inner wall of the jaws and can swing relative to the jaws to adapt the chuck to the outer surface of the cylindrical workpiece.

[0007] In one embodiment, a spring is provided between the chuck and the jaws.

[0008] In one embodiment, the chuck includes a first chuck and a second chuck, the first chuck being disposed at the end of the jaws away from the transmission mechanism, and the second chuck being disposed at the end of the jaws close to the transmission mechanism.

[0009] In one embodiment, the spring is disposed between the first chuck and the jaw.

[0010] In one embodiment, the inner wall of the chuck is arc-shaped, and its curvature is consistent with the curvature of the outer surface of the cylindrical workpiece.

[0011] In one embodiment, the surfaces of the two grippers facing each other are curved, and the curvature of the grippers is smaller than that of the chuck.

[0012] In one embodiment, the inner wall of the chuck is provided with an anti-slip pad.

[0013] In one embodiment, the chuck has a first hinge seat on its surface facing the jaws, and the jaws have a second hinge seat on their inner walls. The first hinge seat is hinged to the second hinge seat via a pivot, so that the chuck swings relative to the jaws.

[0014] In one embodiment, each gripper includes a plurality of parallel gripping arms, adjacent gripping arms are connected by a connecting shaft, and each gripping arm is provided with a gripper head.

[0015] In one embodiment, the gripper includes an upper gripper and a lower gripper, with the gripping arm of the lower gripper located between adjacent gripping arms of the upper gripper.

[0016] Compared with the prior art, the advantages of this utility model are that the grippers have chucks on their inner surfaces facing each other, and the chucks are hinged to the inner wall of the grippers and can swing relative to the grippers. During gripping, the chucks can automatically adjust their angle to adapt to the cylindrical workpiece (hydraulic cylinder), so that the flexible clamp of this utility model can be applied to different types of cylindrical workpieces, with strong versatility, reducing the number of times the grippers need to be changed during gripping operations, improving gripping efficiency, and by cooperating with the outer surface of the cylindrical workpiece, the chucks can firmly clamp the cylindrical workpiece, reducing the risk of falling and making it safer. Attached Figure Description

[0017] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the flexible clamp of this utility model; Figure 2 yes Figure 1 The front view; Figure 3 This is a schematic diagram of the structure of one of the clamps in the flexible clamp of this utility model; Figure 4 yes Figure 2 A magnified view of a section at point A in the middle; Figure label: 1. Clamping jaw; 11. Second hinge seat; 12. Clamping arm; 13. Connecting shaft; 14. Upper clamping jaw; 15. Lower clamping jaw; 2. Transmission mechanism; 21. First transmission arm; 22. Second transmission arm; 23. Third transmission arm; 3. Chuck; 31. First chuck; 32. Second chuck; 33. Anti-slip pad; 34. First hinge seat; 4. Spring; 5. Shaft. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] Currently, hydraulic grippers are generally used to replace damaged hydraulic cylinders in mine cars. They are mounted on a vehicle-mounted arm, and the machine is operated manually or automatically. Traditional hydraulic grippers can only grasp hydraulic cylinders compatible with their designed grippers, making them unsuitable for all types of hydraulic cylinders and limiting their applicability.

[0023] like Figure 1As shown, this utility model provides a flexible clamp for gripping cylindrical workpieces, especially suitable for gripping large hydraulic cylinders. The flexible clamp includes two opposing grippers 1, one end of which is connected to a transmission mechanism 2. Grippers 3 are provided on the inner surfaces of the two grippers 1 facing each other. The grippers 3 are hinged to the inner walls of the grippers 1 and can swing relative to the grippers 1 to adapt to the outer surface of the cylindrical workpiece. When gripping a cylindrical workpiece (hydraulic cylinder), the grippers 3 can automatically adjust their angle to adapt to the outer surface of the cylindrical workpiece. This allows the flexible clamp of this utility model to be applied to different types of cylindrical workpieces, offering strong versatility, reducing the number of times grippers need to be changed during gripping operations, improving gripping efficiency, and, through the engagement of the grippers 3 with the outer surface of the cylindrical workpiece, it can firmly clamp the cylindrical workpiece, avoiding the risk of falling and providing higher safety.

[0024] Example 1 like Figure 2 and Figure 4 As shown, a spring 4 is provided between the chuck 3 and the jaw 1, which transforms the rigid contact between the jaw 1 and the cylindrical workpiece into a flexible contact between the chuck 3 and the cylindrical workpiece. During the clamping process, the spring 4 can play a buffering role, ensuring that cylindrical workpieces of different types or complex structures can be clamped smoothly. In addition, the setting of the spring 4 can adjust the clamping angle, increase the contact area between the chuck 3 and the cylindrical workpiece, so that the chuck 3 can make close contact with the cylindrical workpiece, improve the gripping firmness, avoid the problem of falling after clamping, and make the safety higher.

[0025] In this embodiment, the chuck 3 includes a first chuck 31 and a second chuck 32. The first chuck 31 is disposed at the end of the jaw 1 away from the transmission mechanism 2, and the second chuck 32 is disposed at the end of the jaw 1 close to the transmission mechanism 2. The first chuck 31 and the second chuck 32 are arranged along the front-back direction of the jaw 1, which can clamp cylindrical workpieces in multiple directions to ensure the clamping effect.

[0026] In one embodiment, a spring 4 is disposed between the first chuck 31 and the jaw 1, while no spring is disposed between the second chuck 32 and the jaw 1. That is, the spring 4 is disposed between the first chuck 31 at the front end of the jaw 1 and the jaw 1, allowing adjustment of the entry and exit angle when gripping a cylindrical workpiece, making the fixture suitable for cylindrical workpieces of different sizes or structures. The second chuck 32 at the rear end of the jaw 1 contacts the surface of the cylindrical workpiece, providing support and fixation, ensuring that the second chuck 32 and the first chuck 31 together fit tightly against the outer surface of the cylindrical workpiece. After gripping, the gripping angle is fixed to ensure a clamping effect.

[0027] like Figure 2 As shown, in one embodiment, the inner wall of the chuck 3 is set to be arc-shaped, and its curvature is consistent with the curvature of the outer surface of the cylindrical workpiece. When clamping the cylindrical workpiece, the arc-shaped chuck 3 can fit tightly against the outer surface of the cylindrical workpiece, thereby improving the clamping degree.

[0028] In one embodiment, the surfaces of the two grippers 1 facing each other are curved, and the curvature of the grippers 1 is smaller than that of the chuck 3. The curved grippers 1 can clamp cylindrical workpieces, while the curved chuck 3 can fit tightly against the outer surface of the cylindrical workpiece, ensuring that the cylindrical workpiece can be clamped.

[0029] The curvature of the chuck 3 is adapted to the curvature of the outer surface of the cylindrical workpiece. When the curvatures of the two are the same or not significantly different, the cylindrical workpiece can be clamped by the chuck 3. If the curvature of the chuck 3 differs significantly from the curvature of the cylindrical workpiece, the chuck 3 can be replaced to accommodate cylindrical workpieces with large curvature differences. This makes the fixture of this invention applicable to cylindrical workpieces of different diameters, thus enhancing its applicability.

[0030] like Figure 3 As shown, in one embodiment, the inner wall of the chuck 3 is provided with an anti-slip pad 33. In this embodiment, the anti-slip pad 33 is a rubber pad, which plays a role in buffering and increasing friction. When the clamp grips, it can increase the friction between the chuck 3 and the cylindrical workpiece, preventing the cylindrical workpiece from falling off. Furthermore, the anti-slip pad 33 on the inner wall of the chuck 3 provides buffering protection when it contacts the cylindrical workpiece, preventing the chuck 3 from damaging or wearing down the cylindrical workpiece.

[0031] like Figure 1 and Figure 2 As shown, the gripper 1 includes an upper gripper 14 and a lower gripper 15. The transmission mechanism 2 includes a first transmission arm 21, a second transmission arm 22, and a third transmission arm 23 that are hinged to each other. One end of the first transmission arm 21 is fixed to the end of the upper gripper 14, and the other end of the first transmission arm 21 is hinged to the second transmission arm 22. One end of the second transmission arm 22 is hinged to the first transmission arm 21, and the other end is hinged to the end of the lower gripper 15. The first transmission arm 21 and the second transmission arm 22 form a V-shape. The first transmission arm 21 and the second transmission arm 22 respectively drive the upper gripper 14 and the lower gripper 15 to rotate toward or away from each other, so as to clamp or release the cylindrical workpiece.

[0032] A third transmission arm 23 is hinged to the middle of the second transmission arm 22. One end of the third transmission arm 23 is hinged to the end of the second transmission arm 22 and fixed to the lower chuck 3. The other end of the third transmission arm 23 is connected to a drive mechanism (not shown). The drive mechanism drives the third transmission arm 23 to rotate, thereby causing the lower chuck 15 to rotate relative to the upper chuck 14.

[0033] In this embodiment, the drive mechanism is generally hydraulically driven to accommodate the gripping of large hydraulic cylinders.

[0034] When the fixture is in use, the third transmission arm 23 is driven to rotate by the drive mechanism, which causes the lower jaw 15 and the upper jaw 14 to rotate in a direction away from each other, opening the front opening of the jaw 1 to clamp the cylindrical workpiece. Then, the drive mechanism controls the third transmission arm 23 to rotate, causing the lower jaw 15 and the upper jaw 14 to rotate in a direction away from each other. At the same time, the chuck 3 automatically adjusts the angle to fit the surface of the cylindrical workpiece. The drive mechanism controls the jaw 1 to clamp and lock, preventing the cylindrical workpiece from falling off.

[0035] Example 2 like Figure 2 and Figure 4 As shown, a spring 4 is provided between the chuck 3 and the jaw 1, which transforms the rigid contact between the jaw 1 and the cylindrical workpiece into a flexible contact between the chuck 3 and the cylindrical workpiece. During the clamping process, the spring 4 can play a buffering role, ensuring that cylindrical workpieces of different types or complex structures can be clamped smoothly. In addition, the setting of the spring 4 can adjust the clamping angle, increase the contact area between the chuck 3 and the cylindrical workpiece, so that the chuck 3 can make close contact with the cylindrical workpiece, improve the gripping firmness, avoid the problem of falling after clamping, and make the safety higher.

[0036] In this embodiment, the chuck 3 includes a first chuck 31 and a second chuck 32. The first chuck 31 is disposed at the end of the jaw 1 away from the transmission mechanism 2, and the second chuck 32 is disposed at the end of the jaw 1 close to the transmission mechanism 2. The first chuck 31 and the second chuck 32 are arranged along the front-back direction of the jaw 1, which can clamp cylindrical workpieces in multiple directions to ensure the clamping effect.

[0037] In one embodiment, a spring 4 is disposed between the first chuck 31 and the jaw 1, while no spring is disposed between the second chuck 32 and the jaw 1. That is, the spring 4 is disposed between the first chuck 31 at the front end of the jaw 1 and the jaw 1, allowing adjustment of the entry and exit angle when gripping a cylindrical workpiece, making the fixture suitable for cylindrical workpieces of different sizes or structures. The second chuck 32 at the rear end of the jaw 1 contacts the surface of the cylindrical workpiece, providing support and fixation, ensuring that the second chuck 32 and the first chuck 31 together fit tightly against the outer surface of the cylindrical workpiece. After gripping, the gripping angle is fixed to ensure a clamping effect.

[0038] like Figure 2 As shown, in one embodiment, the inner wall of the chuck 3 is set to be arc-shaped, and its curvature is consistent with the curvature of the outer surface of the cylindrical workpiece. When clamping the cylindrical workpiece, the arc-shaped chuck 3 can fit tightly against the outer surface of the cylindrical workpiece, thereby improving the clamping degree.

[0039] In one embodiment, the surfaces of the two grippers 1 facing each other are curved, and the curvature of the grippers 1 is smaller than that of the chuck 3. The curved grippers 1 can clamp cylindrical workpieces, while the curved chuck 3 can fit tightly against the outer surface of the cylindrical workpiece, ensuring that the cylindrical workpiece can be clamped.

[0040] The curvature of the chuck 3 is adapted to the curvature of the outer surface of the cylindrical workpiece. When the curvatures of the two are the same or not significantly different, the cylindrical workpiece can be clamped by the chuck 3. If the curvature of the chuck 3 differs significantly from the curvature of the cylindrical workpiece, the chuck 3 can be replaced to accommodate cylindrical workpieces with large curvature differences. This makes the fixture of this invention applicable to cylindrical workpieces of different diameters, thus enhancing its applicability.

[0041] like Figure 3 As shown, in one embodiment, the inner wall of the chuck 3 is provided with an anti-slip pad 33. In this embodiment, the anti-slip pad 33 is a rubber pad, which plays a role in buffering and increasing friction. When the clamp grips, it can increase the friction between the chuck 3 and the cylindrical workpiece, preventing the cylindrical workpiece from falling off. Furthermore, the anti-slip pad 33 on the inner wall of the chuck 3 provides buffering protection when it contacts the cylindrical workpiece, preventing the chuck 3 from damaging or wearing down the cylindrical workpiece.

[0042] like Figure 1 and Figure 2 As shown, the gripper 1 includes an upper gripper 14 and a lower gripper 15. The transmission mechanism 2 includes a first transmission arm 21, a second transmission arm 22, and a third transmission arm 23 that are hinged to each other. One end of the first transmission arm 21 is fixed to the end of the upper gripper 14, and the other end of the first transmission arm 21 is hinged to the second transmission arm 22. One end of the second transmission arm 22 is hinged to the first transmission arm 21, and the other end is hinged to the end of the lower gripper 15. The first transmission arm 21 and the second transmission arm 22 form a V-shape. The first transmission arm 21 and the second transmission arm 22 respectively drive the upper gripper 14 and the lower gripper 15 to rotate toward or away from each other, so as to clamp or release the cylindrical workpiece.

[0043] A third transmission arm 23 is hinged to the middle of the second transmission arm 22. One end of the third transmission arm 23 is hinged to the end of the second transmission arm 22 and fixed to the lower chuck 3. The other end of the third transmission arm 23 is connected to a drive mechanism (not shown). The drive mechanism drives the third transmission arm 23 to rotate, thereby causing the lower chuck 15 to rotate relative to the upper chuck 14.

[0044] In this embodiment, the drive mechanism is generally hydraulically driven to accommodate the gripping of large hydraulic cylinders.

[0045] When the fixture is in use, the third transmission arm 23 is driven to rotate by the drive mechanism, which causes the lower jaw 15 and the upper jaw 14 to rotate in a direction away from each other, opening the front opening of the jaw 1 to clamp the cylindrical workpiece. Then, the drive mechanism controls the third transmission arm 23 to rotate, causing the lower jaw 15 and the upper jaw 14 to rotate in a direction away from each other. At the same time, the chuck 3 automatically adjusts the angle to fit the surface of the cylindrical workpiece. The drive mechanism controls the jaw 1 to clamp and lock, preventing the cylindrical workpiece from falling off.

[0046] like Figures 2 to 4 As shown, the surface of the chuck 3 facing the jaw 1 is provided with a first hinge seat 34, and the inner wall of the jaw 1 is provided with a second hinge seat 11. The first hinge seat 34 is hinged to the second hinge seat 11 via a pivot 5, so that the chuck 3 can swing relative to the jaw 1. In this embodiment, the chuck 3 and the jaw 1 are movably connected, so that the chuck 3 can swing left and right during operation, making it suitable for contacting various cylindrical workpieces. The chuck 3 can automatically adjust the clamping angle according to the shape and size of the cylindrical workpiece, thereby adapting to the outer surface of the cylindrical workpiece and improving the adaptability of the fixture of this utility model to different working scenarios.

[0047] Example 3 like Figure 2 and Figure 4 As shown, a spring 4 is provided between the chuck 3 and the jaw 1, which transforms the rigid contact between the jaw 1 and the cylindrical workpiece into a flexible contact between the chuck 3 and the cylindrical workpiece. During the clamping process, the spring 4 can play a buffering role, ensuring that cylindrical workpieces of different types or complex structures can be clamped smoothly. In addition, the setting of the spring 4 can adjust the clamping angle, increase the contact area between the chuck 3 and the cylindrical workpiece, so that the chuck 3 can make close contact with the cylindrical workpiece, improve the gripping firmness, avoid the problem of falling after clamping, and make the safety higher.

[0048] In this embodiment, the chuck 3 includes a first chuck 31 and a second chuck 32. The first chuck 31 is disposed at the end of the jaw 1 away from the transmission mechanism 2, and the second chuck 32 is disposed at the end of the jaw 1 close to the transmission mechanism 2. The first chuck 31 and the second chuck 32 are arranged along the front-back direction of the jaw 1, which can clamp cylindrical workpieces in multiple directions to ensure the clamping effect.

[0049] In one embodiment, a spring 4 is disposed between the first chuck 31 and the jaw 1, while no spring is disposed between the second chuck 32 and the jaw 1. That is, the spring 4 is disposed between the first chuck 31 at the front end of the jaw 1 and the jaw 1, allowing adjustment of the entry and exit angle when gripping a cylindrical workpiece, making the fixture suitable for cylindrical workpieces of different sizes or structures. The second chuck 32 at the rear end of the jaw 1 contacts the surface of the cylindrical workpiece, providing support and fixation, ensuring that the second chuck 32 and the first chuck 31 together fit tightly against the outer surface of the cylindrical workpiece. After gripping, the gripping angle is fixed to ensure a clamping effect.

[0050] like Figure 2 As shown, in one embodiment, the inner wall of the chuck 3 is set to be arc-shaped, and its curvature is consistent with the curvature of the outer surface of the cylindrical workpiece. When clamping the cylindrical workpiece, the arc-shaped chuck 3 can fit tightly against the outer surface of the cylindrical workpiece, thereby improving the clamping degree.

[0051] In one embodiment, the surfaces of the two grippers 1 facing each other are curved, and the curvature of the grippers 1 is smaller than that of the chuck 3. The curved grippers 1 can clamp cylindrical workpieces, while the curved chuck 3 can fit tightly against the outer surface of the cylindrical workpiece, ensuring that the cylindrical workpiece can be clamped.

[0052] The curvature of the chuck 3 is adapted to the curvature of the outer surface of the cylindrical workpiece. When the curvatures of the two are the same or not significantly different, the cylindrical workpiece can be clamped by the chuck 3. If the curvature of the chuck 3 differs significantly from the curvature of the cylindrical workpiece, the chuck 3 can be replaced to accommodate cylindrical workpieces with large curvature differences. This makes the fixture of this invention applicable to cylindrical workpieces of different diameters, thus enhancing its applicability.

[0053] like Figure 3 As shown, in one embodiment, the inner wall of the chuck 3 is provided with an anti-slip pad 33. In this embodiment, the anti-slip pad 33 is a rubber pad, which plays a role in buffering and increasing friction. When the clamp grips, it can increase the friction between the chuck 3 and the cylindrical workpiece, preventing the cylindrical workpiece from falling off. Furthermore, the anti-slip pad 33 on the inner wall of the chuck 3 provides buffering protection when it contacts the cylindrical workpiece, preventing the chuck 3 from damaging or wearing down the cylindrical workpiece.

[0054] like Figure 1 and Figure 2 As shown, the gripper 1 includes an upper gripper 14 and a lower gripper 15. The transmission mechanism 2 includes a first transmission arm 21, a second transmission arm 22, and a third transmission arm 23 that are hinged to each other. One end of the first transmission arm 21 is fixed to the end of the upper gripper 14, and the other end of the first transmission arm 21 is hinged to the second transmission arm 22. One end of the second transmission arm 22 is hinged to the first transmission arm 21, and the other end is hinged to the end of the lower gripper 15. The first transmission arm 21 and the second transmission arm 22 form a V-shape. The first transmission arm 21 and the second transmission arm 22 respectively drive the upper gripper 14 and the lower gripper 15 to rotate toward or away from each other, so as to clamp or release the cylindrical workpiece.

[0055] A third transmission arm 23 is hinged to the middle of the second transmission arm 22. One end of the third transmission arm 23 is hinged to the end of the second transmission arm 22 and fixed to the lower chuck 3. The other end of the third transmission arm 23 is connected to a drive mechanism (not shown). The drive mechanism drives the third transmission arm 23 to rotate, thereby causing the lower chuck 15 to rotate relative to the upper chuck 14.

[0056] In this embodiment, the drive mechanism is generally hydraulically driven to accommodate the gripping of large hydraulic cylinders.

[0057] When the fixture is in use, the third transmission arm 23 is driven to rotate by the drive mechanism, which causes the lower jaw 15 and the upper jaw 14 to rotate in a direction away from each other, opening the front opening of the jaw 1 to clamp the cylindrical workpiece. Then, the drive mechanism controls the third transmission arm 23 to rotate, causing the lower jaw 15 and the upper jaw 14 to rotate in a direction away from each other. At the same time, the chuck 3 automatically adjusts the angle to fit the surface of the cylindrical workpiece. The drive mechanism controls the jaw 1 to clamp and lock, preventing the cylindrical workpiece from falling off.

[0058] like Figures 2 to 4 As shown, the surface of the chuck 3 facing the jaw 1 is provided with a first hinge seat 34, and the inner wall of the jaw 1 is provided with a second hinge seat 11. The first hinge seat 34 is hinged to the second hinge seat 11 via a pivot 5, so that the chuck 3 can swing relative to the jaw 1. In this embodiment, the chuck 3 and the jaw 1 are movably connected, so that the chuck 3 can swing left and right during operation, making it suitable for contacting various cylindrical workpieces. The chuck 3 can automatically adjust the clamping angle according to the shape and size of the cylindrical workpiece, thereby adapting to the outer surface of the cylindrical workpiece and improving the adaptability of the fixture of this utility model to different working scenarios.

[0059] like Figure 1 As shown, each gripper 1 includes multiple parallel gripping arms 12, which are connected by a connecting shaft 13. Each gripping arm 12 is equipped with a chuck 3. By setting multiple gripping arms 12, and each gripping arm 12 is equipped with a chuck 3, it can be ensured that the cylindrical workpiece has multiple gripping points in the length direction, thus ensuring the uniformity and stability of the gripping force.

[0060] In one embodiment, the gripper 1 includes an upper gripper 14 and a lower gripper 15. The gripping arm 12 of the lower gripper 15 is located between adjacent gripping arms 12 of the upper gripper 14. The gripping arms 12 of the upper gripper 14 and the lower gripper 15 are staggered in the length direction of the cylindrical workpiece, so that there are more force points when gripping the cylindrical workpiece, making it more stable.

[0061] In this embodiment, the upper jaw 14 is provided with three clamping arms 12, and the lower jaw 15 is provided with two clamping arms 12. The clamping arms 12 of the lower jaw 15 are located between two adjacent clamping arms 12 of the upper jaw 14. The multiple clamping arms 12 are distributed along the length of the cylindrical workpiece, which improves the clamping stability.

[0062] This utility model of a flexible clamp improves upon the problem of poor self-adaptability of hydraulic cylinder grippers, which can only adapt to one specific type of hydraulic cylinder. A chuck 3 is added to the inner wall of the gripper 1, and the chuck 3 is hinged to the gripper 1, allowing the chuck 3 to automatically adjust the gripping angle, thus adapting to the outer surface of different types of hydraulic cylinders and broadening its applicability. Furthermore, a spring 4 is installed between the front-end chuck 3 and the gripper 1, which not only buffers the gripping force but also adjusts the entry and exit angle of the hydraulic cylinder, increasing the contact area between the chuck 3 and the hydraulic cylinder and improving the gripping stability.

[0063] Compared to traditional hydraulic cylinder grippers, this utility model's clamp, through the design of the chuck 3, is unaffected by the type of hydraulic cylinder it grips, making it suitable for various hydraulic cylinders. This improves the clamp's flexibility, reduces the frequency of gripper changes during operation, and increases gripping efficiency. Furthermore, by using a spring 4 to change rigid contact to flexible contact, it improves the gripping accuracy of the hydraulic cylinder, reduces the time required for angle adjustment during gripping, shortens the gripping time, and, with the spring 4 for buffering and pre-tensioning, provides a larger gripping surface, stronger gripping force, and a lower probability of falling after gripping, thus enhancing safety. This utility model's flexible clamp is suitable for replacing hydraulic cylinders in large trucks, has a wider range of applications, and reduces the maintenance and management costs of clamps.

[0064] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A flexible clamp for clamping cylindrical workpieces, characterized in that, include: Two grippers, the two grippers being arranged opposite to each other; A transmission mechanism is provided at one end of the two grippers. The transmission mechanism is configured to drive the two grippers to move toward each other or rotate away from each other in order to grip or release the cylindrical workpiece. as well as A chuck is disposed on the inner side of the jaws facing each other. The chuck is hinged to the inner wall of the jaws and can swing relative to the jaws to adapt the chuck to the outer surface of the cylindrical workpiece.

2. The flexible clamp according to claim 1, characterized in that, A spring is provided between the chuck and the jaws.

3. The flexible clamp according to claim 2, characterized in that, The chuck includes a first chuck and a second chuck, the first chuck being disposed at the end of the jaws away from the transmission mechanism, and the second chuck being disposed at the end of the jaws close to the transmission mechanism.

4. The flexible clamp according to claim 3, characterized in that, The spring is disposed between the first chuck and the jaw.

5. The flexible clamp according to claim 1, characterized in that, The inner wall of the chuck is arc-shaped, and its curvature is consistent with the curvature of the outer surface of the cylindrical workpiece.

6. The flexible clamp according to claim 5, characterized in that, The surfaces of the two grippers facing each other are curved, and the curvature of the grippers is smaller than that of the chuck.

7. The flexible clamp according to claim 1, characterized in that, The inner wall of the clamp is provided with an anti-slip pad.

8. The flexible clamp according to claim 1, characterized in that, The chuck has a first hinge seat on its surface facing the jaws, and the jaws have a second hinge seat on their inner walls. The first hinge seat is hinged to the second hinge seat via a pivot, so that the chuck can swing relative to the jaws.

9. The flexible clamp according to claim 1, characterized in that, Each gripper includes multiple gripping arms arranged in parallel, adjacent gripping arms are connected by a connecting shaft, and each gripping arm is provided with a gripper head.

10. The flexible clamp according to claim 9, characterized in that, The gripper includes an upper gripper and a lower gripper, with the gripping arm of the lower gripper located between adjacent gripping arms of the upper gripper.

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