Quick change device

Abstract

The utility model relates to the field of medical instruments, and provides a quick-change device which comprises a device body connected with a body component and provided with a connecting hole matched with a to-be-connected component, and the to-be-connected component is inserted into the connecting hole; the device body is provided with a window for the locking tongue to penetrate through, the window is communicated with the connecting hole, the locking tongue is arranged in the window in a sliding mode, and the locking tongue moves in a reciprocating mode in the direction close to or away from the to-be-connected component so as to press or loosen the to-be-connected component; the cam shaft is rotationally connected with the device main body, is connected with the locking tongue and is used for driving the locking tongue to move; the driving handle is fixedly connected with the cam shaft and used for driving the cam shaft to rotate so that the cam shaft can drive the locking tongue to move. The cam shaft is driven to rotate by rotating the handle, and the cam shaft drives the locking tongue to reciprocate, so that a to-be-connected part can be locked or loosened. The operation is simple, the to-be-connected part can be quickly disassembled, assembled and replaced only by rotating the handle, the workload is greatly reduced, and the requirement for frequent disassembly is met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a quick-change device. Background Art

[0002] Currently, people pay particular attention to the portability of medical devices, so the demand for convenient portability of medical devices is getting higher and higher. In portable medical devices, on the one hand, it is reflected in the portable movement of medical devices. For example, medical devices are usually installed on a base, and the medical devices can be flexibly transported by moving the base. On the other hand, it is also reflected in the convenient disassembly of medical function components on medical devices, such as the disassembly and assembly of function components of medical devices such as visual cameras on medical devices.

[0003] Currently, the functional connection interfaces of medical devices mainly adopt the following two connection methods: one is to use multiple bolts for connection, and the other is to use setscrews for connection.

[0004] However, in the actual operation process, when using multiple bolts for fixation, the connection is cumbersome during installation and the workload is large. And when using setscrews for fixation, the requirement of frequent disassembly cannot be met. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a quick-change device to solve the defects and deficiencies in the prior art.

[0006] To achieve the above purpose, the utility model provides a quick-change device, which is suitable for detachably connecting a main body component and a component to be connected, including:

[0007] A device main body for connecting with the main body component, the device main body is provided with a connection hole adapted to the component to be connected, and the component to be connected is inserted into the connection hole;

[0008] A locking tongue for pressing or relaxing the component to be connected, the device main body is further provided with a window through which the locking tongue passes, the window is communicated with the connection hole, and the locking tongue is slidably arranged in the window, and the locking tongue reciprocates along the direction close to or away from the component to be connected to press or relax the component to be connected;

[0009] A camshaft rotatably connected to the device main body, and the camshaft is connected to the locking tongue, and the camshaft is used to drive the locking tongue to perform a linear motion;

[0010] A driving handle fixedly connected to the camshaft, and the driving handle is used to drive the camshaft to rotate so that the camshaft drives the locking tongue to move.

[0011] According to the quick-change device provided by the utility model, it further includes:

[0012] A baffle, disposed on a side of the locking tongue away from the component to be connected, and the baffle is connected to the device body;

[0013] An elastic member, one end of which abuts against the baffle, and the other end abuts against the locking tongue. The elastic member is used to keep the locking tongue in a pressed state with the component to be connected.

[0014] According to the quick-change device provided by the present invention, the elastic members are a pair, and the pair of elastic members are arranged at intervals along the width direction of the locking tongue.

[0015] According to the quick-change device provided by the present invention, the locking tongue is provided with a first through hole adapted to the camshaft, and the camshaft is disposed through the first through hole.

[0016] The quick-change device further includes:

[0017] A wear-resistant sleeve, inserted into the first through hole, and the wear-resistant sleeve is disposed between the locking tongue and the camshaft.

[0018] According to the quick-change device provided by the present invention, the wear-resistant sleeves are a pair, and the pair of wear-resistant sleeves are respectively disposed at two ends of the first through hole.

[0019] According to the quick-change device provided by the present invention, it further includes:

[0020] A limiting protrusion, protruding from the driving handle;

[0021] A limiting member, disposed on the device body, and the limiting member is used to limit the rotation angle of the driving handle. The limiting member is provided with a clamping portion adapted to the limiting protrusion, and the limiting protrusion abuts against the clamping portion.

[0022] According to the quick-change device provided by the present invention, one of the driving handle and the camshaft is provided with a polygonal hole, and the other is provided with a polygonal prism portion adapted to the polygonal hole, and the polygonal prism portion is inserted into the polygonal hole.

[0023] According to the quick-change device provided by the present invention, the driving handle and the camshaft are correspondingly provided with mounting holes for inserting fasteners.

[0024] According to the quick-change device provided by the present invention, it further includes:

[0025] A pair of bearings, distributed at intervals along the axial direction of the camshaft, and the camshaft is rotatably connected to the device body through the bearings.

[0026] According to the quick-change device provided by the present invention, it further includes:

[0027] At least two snap rings for fixing a pair of the bearings, the snap rings are sleeved on the camshaft, and the device body is provided with an annular groove adapted to the snap rings, and the snap rings are embedded in the annular groove.

[0028] The quick-change device provided by the present utility model is suitable for detachably connecting a main body component and a component to be connected, and includes: a device body for connecting with the main body component, the device body is provided with a connection hole adapted to the component to be connected, and the component to be connected is inserted into the connection hole; a locking tongue for pressing or relaxing the component to be connected, the device body is further provided with a window through which the locking tongue passes, the window is communicated with the connection hole, and the locking tongue is slidably arranged in the window, and the locking tongue moves along the direction close to or away from the component to be connected to press or relax the component to be connected; a camshaft rotatably connected to the device body, and the camshaft is connected to the locking tongue, and the camshaft is used to drive the locking tongue to perform a linear motion; a driving handle fixedly connected to the camshaft, and the driving handle is used to drive the camshaft to rotate so that the camshaft drives the locking tongue to move. With such a setting, by rotating the driving handle to drive the camshaft to rotate, the camshaft drives the locking tongue to reciprocate, and the component to be connected can be locked or loosened. Its operation is simple, and only by rotating the handle can the quick disassembly, assembly and replacement of the component to be connected be realized, greatly reducing the workload of the operator and meeting the use requirements of frequent disassembly. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0030] Figure 1 is a schematic structural diagram of the quick-change device provided by the present utility model.

[0031] Figure 2 is an internal sectional view of the quick-change device provided by the present utility model.

[0032] Figure 3 is a schematic structural diagram of the device body provided by the present utility model.

[0033] Figure 4 is a schematic structural diagram of the locking tongue provided by the present utility model.

[0034] Figure 5 is a schematic structural diagram of the baffle provided by the present utility model.

[0035] Figure 6 is a schematic structural diagram of the wear-resistant sleeve provided by the present utility model.

[0036] Figure 7 It is a schematic structural view of the limiting member provided by the present utility model.

[0037] Figure 8 It is a schematic structural view of the camshaft provided by the present utility model.

[0038] Figure 9 It is one of the schematic structural views of the driving handle provided by the present utility model.

[0039] Figure 10 It is the other schematic structural view of the driving handle provided by the present utility model.

[0040] Reference numerals:

[0041] 1: Component to be connected; 2: Device main body; 21: Connection seat; 211: First assembly hole; 22: Connection main body; 23: Connection plate; 231: Second assembly hole; 232: Second through hole; 3: Connection hole; 4: Locking tongue; 41: First through hole; 42: Second groove; 43: Contact part; 5: Window; 6: Camshaft; 7: Driving handle; 71: Magnetic part; 72: Connection part; 8: Baffle; 81: First groove; 82: Threaded hole; 9: Elastic part; 10: Wear-resistant sleeve; 101: Connection flange; 1011: Third assembly hole; 102: Sleeve; 11: Limiting protrusion; 12: Limiting member; 121: Clamping part; 13: Polygonal hole; 14: Prismatic part; 15: Mounting hole; 16: Bearing; 17: Snap ring; 18: Annular groove; 19: Magnet. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0043] The following combines Figures 1 to 10 to describe the quick-change device of the present utility model.

[0044] As Figures 1 to 10As shown in the figure, an embodiment of the present utility model provides a quick-change device, which is applicable to the disassembly and assembly between a main body component and a component to be connected 1, so as to achieve the quick connection, quick removal, and quick replacement of the component to be connected 1 and the main body component. Specifically, it is applied to the connection between a medical device and a base, or the connection between a medical device and a medical functional component. When the main body component is the base, the component to be connected 1 is the medical device; when the main body component is the medical device, the component to be connected 1 is the medical functional component.

[0045] The quick-change device includes a device main body 2, a locking tongue 4, a camshaft 6, and a driving handle 7. Specifically, as Figure 1 shown, the device main body 2 is used to be connected to the main body component. The device main body 2 is provided with a connection hole 3 adapted to the component to be connected 1, and the component to be connected 1 is inserted into the connection hole 3. Specifically, as Figure 3 shown, the device main body 2 includes a connection seat 21 and a connection main body 22, and the connection main body 22 is fixedly installed on the connection seat 21. The connection seat 21 is provided with a plurality of first assembly holes 211, which can be pre-installed on the main body component through bolts, such as the installation position of the medical device corresponding to the base on the base, as a part of the base, or pre-installed at the functional connection interface position of the medical device through bolts, as a part of the medical device. The connection main body 22 is provided with a connection hole 3 that penetrates axially along it. The shape, size, etc. of the connection hole 3 need to be adaptively designed according to the specific structure of the component to be connected 1. In addition, as Figure 2 shown, the connection hole 3 can extend into the connection seat 21 to make the connection between the component to be connected 1 and the device main body 2 more reliable. The first assembly holes 211 can be designed as counterbores so that the bolts will not protrude from its surface. It should be noted that in terms of the placement position of the quick-change device as Figure 3 shown, the up-down direction in the figure is the axial direction of the connection main body 22.

[0046] As Figure 2 shown, the locking tongue 4 is used to press or loosen the component to be connected 1. The locking tongue 4 generally selects a material with a large friction force, such as aluminum. As Figure 4 shown, the locking tongue 4 is provided with a contact portion 43 adapted to the component to be connected 1 to increase the contact area between the two. The device main body 2 is also provided with a window 5 for the locking tongue 4 to pass through, and the window 5 is communicated with the connection hole 3. The locking tongue 4 is slidably arranged in the window 5, and the locking tongue 4 moves along the direction close to or away from the component to be connected 1 to press or loosen the component to be connected 1. Specifically, as Figure 3 shown, the connection main body 22 is also provided with a window 5. In this way, the locking tongue 4 can pass through the window 5, extend into the connection hole 3, and abut against the component to be connected 1. As Figure 2As shown, when the locking tongue 4 moves towards the direction close to the component 1 to be connected, that is, moves leftward, the locking tongue 4 extends into the window 5 and presses the component 1 to be connected in the connection hole 3. At this time, the component 1 to be connected is fixed on the main body component. When the locking tongue 4 moves away from the component 1 to be connected, that is, moves rightward, the locking tongue 4 withdraws from the window 5 and releases the component 1 to be connected. At this time, the component 1 to be connected is released, and the component 1 to be connected can be disassembled and replaced. It should be noted that, taking the placement position of the quick-change device as shown in Figure 2 as an example, the left and right directions in the figure are the indicated left and right orientations.

[0047] As Figure 2 shown, the camshaft 6 is rotatably connected to the device main body 2, and the camshaft 6 is connected to the locking tongue 4. The camshaft 6 is used to drive the locking tongue 4 to perform linear reciprocating motion. As Figure 1 shown, the driving handle 7 is fixedly connected to the camshaft 6. The driving handle 7 is used to drive the camshaft 6 to rotate, so that the camshaft 6 drives the locking tongue 4 to move. In this way, the operator rotates the driving handle 7 to drive the camshaft 6 to rotate accordingly, and thus realizes the reciprocating linear motion of the locking tongue 4 by relying on the cam structure, and further realizes the quick installation and replacement of the component 1 to be connected, without the need to use special tools, which is convenient for disassembly and installation.

[0048] With such a setting, by rotating the driving handle 7 to drive the camshaft 6 to rotate, and the camshaft 6 drives the locking tongue 4 to reciprocate, the component 1 to be connected can be locked or loosened. Its operation is simple. Just rotating the handle can realize the quick disassembly, installation and replacement of the component 1 to be connected, greatly reducing the workload of the operator and meeting the use requirements of frequent disassembly.

[0049] Furthermore, in the embodiment of the present invention, the quick-change device further includes a baffle 8 and an elastic member 9. As Figure 2 shown, the baffle 8 is arranged on the side of the locking tongue 4 away from the component 1 to be connected, and the baffle 8 is connected to the device main body 2. Specifically, as Figure 3 shown, the device main body 2 further includes a pair of connecting plates 23 protruding from the connecting main body 22. The pair of connecting plates 23 are respectively arranged at the upper and lower ends of the window 5, and the locking tongue 4 is located between the pair of connecting plates 23. A plurality of second assembly holes 231 are correspondingly provided on the pair of connecting plates 23 and the baffle 8. The baffle 8 is fixedly installed on the device main body 2 by inserting bolts. The opening on the baffle 8 can be designed as a counterbore to prevent the bolts from protruding from the surface of the baffle 8. It should be noted that, taking the placement position of the quick-change device as shown in Figure 3 as an example, the up and down directions in the figure are the indicated up and down orientations.

[0050] The elastic member 9 can be selected as a spring. One end of it abuts against the baffle 8, and the other end abuts against the locking tongue 4. The elastic member 9 is used to keep the locking tongue 4 in a pressed state with the component 1 to be connected. Specifically, as Figure 5 andFigure 4 As shown in the figure, the baffle 8 is provided with a first groove 81, and the locking tongue 4 is provided with a second groove 42 opposite to the first groove 81. One end of the elastic member 9 abuts against the first groove 81, and the other end abuts against the second groove 42 to limit and fix the elastic member 9 so that it can act on the locking tongue 4 reliably.

[0051] During installation, the driving handle 7 can be rotated by an external force to overcome the elastic force of the elastic member 9, drive the camshaft 6 to rotate, and make the locking tongue 4 withdraw from the window 5. At this time, the component 1 to be connected can be inserted into the connection hole 3. Rotate the driving handle 7 in the reverse direction, and under the action of the elastic force of the elastic member 9, push the locking tongue 4 into the window 5 to lock the component 1 to be connected in the device main body 2. If it is necessary to replace and remove the component 1 to be connected, just rotate the driving handle 7 again.

[0052] With such a setting, the elastic member 9 is always in a compressed state to provide a thrust force to the locking tongue 4, so that the locking tongue 4 always has a tendency to press the component 1 to be connected, thereby ensuring that the component 1 to be connected is fixed reliably and improving the connection reliability and stability. At the same time, the elastic member 9 also has an elastic reset function to promote the switching of the locking tongue 4 from the relaxed state to the compressed state.

[0053] In an alternative embodiment of the present utility model, as Figure 1 shown, there are a pair of elastic members 9, and the pair of elastic members 9 are arranged at intervals along the width direction of the locking tongue 4. With such a setting, a stable elastic pressing force can be provided, which acts on the locking tongue 4 reliably to ensure the stable movement of the locking tongue 4. In addition, the baffle 8 is also provided with a threaded hole 82 opposite to the elastic member 9 to adjust the pressure of the elastic member 9 during pre-adjustment. When the elastic force of the elastic member 9 is insufficient, a bolt can be screwed into the threaded hole 82 to squeeze the elastic member 9. It should be noted that taking the placement position of the quick-change device as shown in Figure 1 the figure, the direction indicated by the arrow in the figure is the width direction of the locking tongue 4.

[0054] As an alternative embodiment of the present utility model, as Figure 4 shown, the locking tongue 4 is provided with a first through hole 41 adapted to the camshaft 6. The camshaft 6 is disposed through the first through hole 41 to drive the locking tongue 4 to move therewith. As Figure 2 shown, the quick-change device further includes a wear-resistant sleeve 10, and the wear-resistant sleeve 10 is inserted into the first through hole 41, and the wear-resistant sleeve 10 is disposed between the locking tongue 4 and the camshaft 6. Specifically, as Figure 6As shown in the figure, the wear-resistant sleeve 10 includes a connecting flange 101 and a sleeve 102 that are connected to each other. The connecting flange 101 and the locking tongue 4 are respectively provided with a plurality of third assembly holes 1011 for fixedly connecting the two by bolts. The third assembly holes 1011 on the connecting flange 101 can be designed as counterbores to prevent the bolts from protruding from its surface and avoid installation interference. The sleeve 102 is adapted to the first through hole 41, and the camshaft 6 passes through the sleeve 102. With such a setting, the wear-resistant sleeve 10 can reduce the frictional wear between the camshaft 6 and the locking tongue 4, protect the locking tongue 4, and extend the service life of the locking tongue 4.

[0055] Furthermore, in the embodiment of the present invention, as Figure 1 shown, there are a pair of wear-resistant sleeves 10, and the pair of wear-resistant sleeves 10 are respectively arranged at both ends of the first through hole 41. With such a setting, the wear-resistant sleeves 10 can be inserted from the upper and lower ends of the first through hole 41 respectively, which is convenient for installation and can better protect the locking tongue 4. It should be noted that, taking the placement position of the quick-change device as shown in Figure 1 the figure, the up and down directions in the figure are the indicated up and down orientations.

[0056] In a specific embodiment of the present invention, the quick-change device further includes a limit protrusion 11 and a limit member 12. As Figure 9 shown, the limit protrusion 11 protrudes from the driving handle 7. As Figure 1 shown, the limit member 12 is arranged on the device main body 2, for example, it can be connected by bolts. The limit member 12 is used to limit the rotation angle of the driving handle 7. As Figure 7 shown, the limit member 12 is provided with a clamping portion 121 adapted to the limit protrusion 11, and the limit protrusion 11 abuts against the clamping portion 121.

[0057] Specifically, as Figure 1 shown, when the driving handle 7 is rotated counterclockwise to drive the locking tongue 4 to withdraw from the window 5, when the limit protrusion 11 abuts against the clamping portion 121, the driving handle 7 stops rotating. At this time, the component 1 to be connected can be installed or replaced.

[0058] With such a setting, through the cooperation of the limit protrusion 11 on the handle and the limit member 12, the rotation angles of the driving handle 7 and the camshaft 6 can be limited, ensuring the accuracy of rotation, avoiding over-position operation, improving the reliability and effectiveness of the device, and the operation is efficient and convenient. In addition, as Figure 1As shown, a magnet 19 is further provided on the surface of the device main body 2 opposite to the driving handle 7, and a magnetic part 71 attracted to the magnet 19 is correspondingly provided on the driving handle 7. The magnetic part 71 is attracted to the magnet 19 to prevent the driving handle 7 from accidentally loosening and rotating, ensuring that the component to be connected 1 is reliably locked, and improving the safety and stability of the connection. In other embodiments, a magnet 19 may be provided on the surface of the device main body 2 opposite to the driving handle 7, and the driving handle 7 itself may be a magnetic part, such as an iron part or a magnetic component, etc., and the driving handle 7 can be magnetically fixed to the device main body 2 as a whole.

[0059] In an alternative embodiment of the present utility model, one of the driving handle 7 and the camshaft 6 is provided with a polygonal hole 13, and the other is provided with a polygonal prism part 14 adapted to the polygonal hole 13, and the polygonal prism part 14 is inserted into the polygonal hole 13. That is to say, the driving handle 7 is provided with a polygonal hole 13, and the camshaft 6 is provided with a polygonal prism part 14; or, the camshaft 6 is provided with a polygonal hole 13, and the driving handle 7 is provided with a polygonal prism part 14. For example, as Figure 8 shown, the camshaft 6 is provided with a polygonal prism part 14 such as a hexagonal prism. As Figure 10 shown, the driving handle 7 is correspondingly provided with a polygonal hole 13 such as a hexagonal hole. With such a setting, through the cooperation connection of the polygonal structure, it is convenient to lock the driving handle 7, and the driving handle 7 can reliably drive the camshaft 6 to rotate synchronously.

[0060] Furthermore, in the embodiment of the present utility model, the driving handle 7 and the camshaft 6 are correspondingly provided with mounting holes 15 for inserting fasteners. Specifically, as Figure 8 shown, a mounting hole 15 is provided at the top of the camshaft 6, and the mounting hole 15 is a threaded hole. As Figure 9 shown, the driving handle 7 includes a connected magnetic part 71 and a connecting part 72. The shape of the magnetic part 71 can be consistent with the shape of the connecting main body 22 for their cooperation. The connecting part 72 is provided with a polygonal hole 13 for inserting and connecting with the camshaft 6, and the connecting part 72 is further provided with a mounting hole 15 communicating with the polygonal hole 13. The mounting hole 15 can be a stepped hole, and the hole diameter of the hole section close to the polygonal hole 13 is smaller, and the hole diameter of the hole section far from the polygonal hole 13 is larger. As Figure 2 shown, with such a setting, the locking bolt enters the threaded hole of the camshaft 6 through the through hole of the driving handle 7 and is screwed into the threaded hole of the camshaft 6 to fixedly connect the driving handle 7 and the camshaft 6, which can ensure that the camshaft 6 will not fall off and enable the device to work reliably. In addition, as Figure 10 shown, a limiting protrusion 11 protrudes from the connecting part 72 for cooperation with the limiting part 12. It should be noted that taking the placement position of the quick-change device as shown in Figure 8 as an example, the upper end in the figure is the top of the camshaft 6.

[0061] In a specific embodiment of the present utility model, the quick-change device further includes a pair of bearings 16. As Figure 2 shown, the pair of bearings 16 are spaced apart along the axial direction of the camshaft 6, and the camshaft 6 is rotatably connected to the device main body 2 through the bearings 16. Specifically, a pair of connecting plates 23 are respectively provided with second through holes 232 for the camshaft 6 to pass through, and the bearings 16 are correspondingly installed in the second through holes 232. Thus, the upper and lower ends of the camshaft 2 are respectively rotatably connected to the pair of connecting plates 23 through the bearings 16. With such a setting, the friction during the rotation of the camshaft 6 can be reduced, enabling the camshaft 6 to rotate flexibly and smoothly, which is convenient for operation. It should be noted that, taking the placement position of the quick-change device as shown in Figure 2 as an example, the up-and-down direction in the figure is the up-and-down orientation and the axial direction of the camshaft 6 referred to.

[0062] Furthermore, in the embodiment of the present utility model, the quick-change device further includes at least two snap rings 17, and each snap ring 17 is used to fix the pair of bearings 16. As Figure 2 shown, the snap rings 17 are sleeved on the camshaft 6, and the device main body 2 is provided with an annular groove 18 adapted to the snap rings 17, and the snap rings 17 are embedded in the annular groove 18. Specifically, as Figure 2 shown, there are four snap rings 17, which are respectively arranged at the upper and lower ends of the pair of bearings 16. And as Figure 3 shown, the hole wall of the second through hole 232 is correspondingly provided with an annular groove 18 adapted to the snap rings 17. With such a setting, the positioning and installation of the bearings 16 can be realized through the snap rings 17, which is convenient for assembly.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A quick-change device, suitable for detachably connecting a main component to a component to be connected (1), characterized in that: include: A device body (2) is used to connect with the main body component, the device body (2) is provided with a connection hole (3) adapted to the component to be connected (1), and the component to be connected (1) is inserted into the connection hole (3); A locking tongue (4) is used to compress or loosen the component to be connected (1); the device body (2) is further provided with a window (5) for the locking tongue (4) to pass through; the window (5) is communicated with the connecting hole (3), and the locking tongue (4) is slidably arranged in the window (5); the locking tongue (4) reciprocates in a direction approaching the component to be connected (1) or away from the component to be connected (1) to compress or loosen the component to be connected (1); A cam shaft (6) is rotatably connected to the device body (2), and the cam shaft (6) is connected to the locking tongue (4), and the cam shaft (6) is used to drive the locking tongue (4) to perform linear motion; A driving handle (7) is fixedly connected to the cam shaft (6), and the driving handle (7) is used to drive the cam shaft (6) to rotate, so that the cam shaft (6) drives the locking tongue (4) to move.

2. The quick-change device according to claim 1, characterized in that: Also includes: a baffle (8) disposed on a side of the locking tongue (4) away from the component to be connected (1), and the baffle (8) is connected to the device body (2); An elastic member (9) has one end abutting against the baffle (8) and the other end abutting against the locking tongue (4), and the elastic member (9) is used to keep the locking tongue (4) and the component to be connected (1) in a compressed state.

3. The quick-change device according to claim 2, characterized in that: The elastic members (9) are a pair, and the pair of elastic members (9) are arranged at intervals along the width direction of the locking tongue (4).

4. The quick-change device according to claim 1, characterized in that: The locking tongue (4) is provided with a first through hole (41) adapted to the cam shaft (6), and the cam shaft (6) is arranged to pass through the first through hole (41). The quick-change device also includes: A wear-resistant sleeve (10) is inserted into the first through hole (41), and the wear-resistant sleeve (10) is arranged between the locking tongue (4) and the camshaft (6).

5. The quick-change device according to claim 4, characterized in that: The wear-resistant sleeves (10) are a pair, and the pair of wear-resistant sleeves (10) are respectively arranged at two ends of the first through hole (41).

6. The quick-change device according to claim 1, characterized in that: Also includes: A limiting protrusion (11) protrudingly disposed on the driving handle (7); A limiter (12) is arranged on the device body (2), and is used to limit the rotation angle of the driving handle (7). The limiter (12) is provided with a clamping portion (121) adapted to the limiter protrusion (11), and the limiter protrusion (11) is in abutment with the clamping portion (121).

7. The quick-change device according to claim 1, characterized in that: One of the driving handle (7) and the cam shaft (6) is provided with a polygonal hole (13), and the other is provided with a polygonal column portion (14) adapted to the polygonal hole (13), and the polygonal column portion (14) is inserted into the polygonal hole (13).

8. The quick-change device according to claim 1, characterized in that: The driving handle (7) and the cam shaft (6) are correspondingly provided with mounting holes (15) for inserting fasteners.

9. The quick-change device according to claim 1, characterized in that: Also includes: A pair of bearings (16) are spaced apart along the axial direction of the camshaft (6); the camshaft (6) is rotatably connected to the device body (2) via the bearings (16).

10. The quick-change device according to claim 9, characterized in that: Also includes: At least two clamping rings (17) are used to fix a pair of bearings (16); the clamping rings (17) are sleeved on the camshaft (6); and the device body (2) is provided with an annular groove (18) matching the clamping ring (17); the clamping ring (17) is embedded in the annular groove (18).

Images