A swing type clamping and releasing device

Abstract

The present invention discloses a swing-type clamping and releasing device, including a swing arm assembly, a flexible capture assembly, a clamping seat, a releasing device and a rotating shaft assembly; the swing arm assembly is fixedly connected to the load by clamping, and the swing arm assembly and the clamping seat are rotationally connected by the rotating shaft assembly, and the clamping seat is used to be fixedly connected to an external star; a releasing device is provided at the center of the clamping seat for releasing the swing arm assembly; flexible capture assemblies are provided on both sides of the clamping seat, and when the swing arm assembly is released, the swing arm assembly is captured by the flexible deformation of the flexible capture assembly. The present invention achieves better load adaptability than traditional locking joints and reduces unlocking impact by symmetrically clamping the load; by actively swinging open the swing arm assembly with a large gap, a separation action that is independent of load movement is achieved, thereby increasing separation reliability; by the flexible capture assembly, lightweight and repeatable storage of movable parts is achieved, thereby improving economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of space mechanism compression and release devices, and in particular to a swing type compression and release device. Background Art

[0002] The clamping and releasing device, especially the clamping and releasing device involved in the spacecraft, in the satellite launch phase, constrains all the degrees of freedom of the mechanism, payload and other loads by reliably connecting them to the satellite body to resist the mechanical load of the rocket launch phase; when the satellite enters orbit, the connection between the mechanism, payload and other loads and the satellite body is reliably cut off to release the mechanism and loads, so that they have the corresponding degrees of freedom of movement to achieve normal movement.

[0003] The clamping and releasing device in the technical field of space structure connection mechanism usually consists of two parts, which are fixed to the load or satellite body respectively, and the clamping rod, rope and other connection methods are used to connect the load and the satellite body at the same time by punching holes on the load, so as to transmit the clamping force. When released, the energy sources such as pyrotechnics and fuses convert chemical energy and electrical energy into mechanical energy and thermal energy to cut off the connection and release the load. The above-mentioned clamping and releasing device requires that the separation surface is perpendicular to the direction of the clamping force application, and perpendicular to the tangent direction of the initial motion trajectory after the load is released, that is, the separation action is coupled with the mechanism movement; the load movement is constrained by the separation surface, and after unlocking, it can only move in one direction, and has poor adaptability to loads with complex motion envelopes and complex motion processes; at the same time, the perforated clamping method often requires holes to be opened on the load surface, which cannot meet the requirements of loads with high surface state requirements such as high-precision reflective surfaces. Summary of the invention

[0004] In view of this, the present invention provides a swing-type clamping and releasing device, which is independent of the separation action of the load movement and can achieve a reliable connection between the clamped load and the satellite body.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A swing type clamping and releasing device comprises a swing arm assembly, a flexible capture assembly, a clamping seat, a releasing device and a rotating shaft assembly;

[0007] The swing arm assembly is fixedly connected to the load through clamping, and the swing arm assembly and the clamping seat are rotationally connected through a rotating shaft assembly. The clamping seat is used to be fixedly connected to an external star body. A releasing device is provided in the center of the clamping seat for releasing the swing arm assembly. Flexible capture assemblies are provided on both sides of the clamping seat. When the swing arm assembly is released, the swing arm assembly is captured by the flexible deformation of the flexible capture assembly.

[0008] Further, the swing arm assembly includes a swing arm, a clamping connector, a force nut, a recovery spring, a fixing nut, a guide plate and a recovery cylinder assembly;

[0009] The swing arm assembly is a symmetrical structure, and the structures on both sides are connected by a clamping connector. Taking one side as an example, a locking groove is provided at the upper end of the swing arm for clamping the load; the lower end of the swing arm is used to connect with the clamping connector;

[0010] The recovery cylinder assembly is fixed to the outer side of the lower end of the swing arm, the end of the clamping connector is fixedly connected to the force nut, a recovery spring is sleeved on the outside of the force nut, the guide plate presses the recovery spring onto the outer end surface of the swing arm, and the guide plate is fixed to the clamping connector by a fixing nut.

[0011] Furthermore, the recovery cylinder assembly includes a cylinder body, a buffer element, a bearing plate and a capture column;

[0012] The cylinder is open at one end and has a central hole at the other end. A flange is provided on the outer side of the open end for fixed connection with the swing arm. The load-bearing plate fixes the buffer element on the inner wall surface of the central hole end. The capture column is columnar and located at the edge of the flange. After the swing arm is swung open, it is captured by the flexible capture component.

[0013] Furthermore, the flexible capture assembly includes four flexible sheets, two of which form a group, which surround the outer circumference of the recovery barrel assembly, and the two groups are symmetrical about the load movement direction axis; taking one flexible sheet as an example, it includes a guide sheet and a storage portion;

[0014] The storage portion is provided with a storage groove and an installation interface, and the guide piece and the plane where the storage groove is located form a certain angle; the flexible capture component is installed on both sides of the pressing seat through the installation interface.

[0015] Furthermore, the clamping seat is provided with a release device channel, a shaft hole, a clamping connector channel, an anti-rotation pin hole and a flexible capture component installation interface;

[0016] The release device channel and the clamping connector channel are both cylindrical holes, and their axes intersect at one point, which are respectively used to install the release device and the clamping connector; the anti-rotation pin hole is arranged on the side of the clamping seat, and the shaft hole intersects with the anti-rotation pin hole at 90°. By inserting a limiting part in the anti-rotation pin hole, the shaft assembly itself is constrained from rotating.

[0017] Furthermore, the release device is located between the two swing arms, and cuts off the compression connection piece through mechanical energy or thermal energy.

[0018] Furthermore, the rotating shaft assembly includes a rotating shaft, a coil spring and a sliding sheet;

[0019] There are hexagonal grooves on both end faces of the shaft, which are twisted by the corresponding hexagonal wrench to add force to the coil spring; there are round holes on both ends of the shaft, which are used to cooperate with the anti-rotation pin hole and the limit parts to achieve axial positioning and rotation constraint of the shaft assembly;

[0020] One end of the coil spring is connected to the rotating shaft, and the other end is connected to the swing arm assembly. The slide is a hollow cylinder, fixed at both ends of the rotating shaft, and is located between the clamping seat and the swing arm assembly, with a gap between the two.

[0021] Furthermore, the swing arm is T-shaped, and the vertical side of the T-shape is provided with a rectangular lightening groove, a spherical segment-shaped lubrication groove, a central through hole, a limit column and a rotating shaft hole;

[0022] The shaft hole is used to cooperate with the shaft assembly, and the limit column is arranged at the lower end of the swing arm to cooperate with the clamping seat; the central through hole intersects with the lubrication groove and the axis passes through the center of the lubrication groove; the T-shaped horizontal side is provided with an outer convex portion, and the locking groove is arranged on the outer convex portion, which is a trapezoidal groove.

[0023] Furthermore, a chamfer is provided on the outer bottom of the clamping seat for cooperating with the limiting column to prevent the swing arm assembly from moving out of control.

[0024] Further, the swing arm assembly also includes a lubrication pad placed in the spherical segment-shaped lubrication groove;

[0025] The lubricating pad is composed of a spherical segment and a cylindrical segment, wherein the diameter of the spherical segment is smaller than the diameter of the lubricating groove.

[0026] Beneficial effects:

[0027] 1. The present invention realizes a reliable connection between the load in a clamped state and the satellite body by clamping the cylindrical and prismatic structures of the inherent structure of the load. Compared with the traditional clamping release device partially connected to the load, there is no need to drill holes on the load or install the clamping rod connector related parts, which simplifies the load configuration, does not require secondary design of the load structure, and reduces the additional mass.

[0028] Secondly, through the reasonable layout of the swing arm assembly, the clamping seat, and the rotating shaft assembly, a large-gap symmetrical active swinging and a separation action that is independent of the load movement are achieved. The load can move in any direction, which improves the flexibility of the load kinematic design, while reducing the risk of hooking of the clamping release device and increasing the separation reliability. Compared with the one-way release of the traditional clamping release device, the symmetrical swinging can further reduce the unlocking impact and optimize the mechanical environment of the load.

[0029] Furthermore, through the flexible capture of the flexible capture component, the effective storage of the swing arm assembly is achieved. Compared with the traditional compression release device, the above-mentioned part can be stored near the designated position. At the same time, the capture function is realized by utilizing the flexible deformation of the material. It is light in weight, reusable, and improves the economic benefits.

[0030] 2. The present invention can effectively design the storage position of the swing arm assembly to avoid interference with the celestial body by modifying the position of the installation interface and the shape of the storage groove on the flexible capture assembly.

[0031] 3. The paired swing arms of the present invention can clamp the load through the locking grooves arranged thereon, and the locking grooves of the present invention are trapezoidal grooves, which can effectively restrain the load and facilitate separation when unlocking.

[0032] 4. The slide plate of the present invention is located between the pressing seat and the swing arm assembly, and there is a small gap between the two, which can play a role of limiting and lubricating between the two.

[0033] 5. The outer bottom of the pressing seat of the present invention is provided with a chamfer to cooperate with the limiting column to prevent the swing arm assembly from moving out of control.

[0034] 6. The lubricating pad of the present invention is composed of a spherical segment and a cylindrical segment, wherein the diameter of the spherical segment is smaller than the diameter of the lubricating groove, which can ensure that the lubricating pad can rotate at a small angle in the lubricating groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention in a compacted state.

[0036] Figure 2 It is a structural schematic diagram of the present invention in an unlocked state.

[0037] Figure 3 This is the load side view.

[0038] Figure 4 It is a schematic diagram of the structure of the swing arm assembly.

[0039] Fig. 5(a), Fig. 5(b) and Fig. 5(c) are respectively a left view, a right view and a cross-sectional view of the swing arm.

[0040] Figure 6 It is a schematic diagram of the structure of the recovery tube assembly.

[0041] Figure 7(a) and Figure 7(b) are the front view and side view of the flexible capture component respectively.

[0042] Figure 8(a) and Figure 8(b) are respectively a cross-sectional view and a side view of the pressing seat.

[0043] Fig. 9 It is a structural schematic diagram of the shaft assembly.

[0044] Among them, 1-swing arm assembly; 11-swing arm; 111-lightening groove; 112-lubricating groove; 113-center hole; 114-limiting column; 115-rotating shaft hole; 116-front end of the swing arm, 117-locking groove; 12-pressing connector; 13-lubricating pad; 14-force nut; 15-recovery spring; 16-fixing nut; 17-guide plate; 18-recovery cylinder assembly; 181-cylinder; 182-buffer element; 183-load-bearing plate; 184-capture column;

[0045] 2-flexible capture component; 21-guide plate; 22-storage slot; 23-installation interface;

[0046] 3-compression seat; 31-release device channel; 32-rotation shaft hole; 33-compression connector channel; 34-anti-rotation pin hole; 35-bottom plate; 36-flexible capture component installation interface;

[0047] 4-Release device;

[0048] 5-rotating shaft assembly; 51-rotating shaft; 52-coil spring; 53-sliding plate. DETAILED DESCRIPTION

[0049] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0050] The present invention provides a swinging clamping and releasing device, which can provide reliable clamping when the deployment mechanism is folded, without the need to add mass or openings to the scientific load or its deployment mechanism. At the same time, it actively swings open after unlocking, providing the deployment mechanism with a six-degree-of-freedom motion space within a certain range.

[0051] like Figure 1 , Figure 2 , Figure 3 As shown, the swing type clamping and releasing device comprises: a swing arm assembly 1, a flexible capture assembly 2, a clamping seat 3, a releasing device 4 and a rotating shaft assembly 5.

[0052] The swing arm assembly 1 is fixedly connected to the load by clamping, and the swing arm assembly 1 and the clamping seat 3 are rotationally connected by the rotating shaft assembly 5, and the clamping seat 3 is fixedly connected to the external star body by screws or the like; a releasing device 4 is provided in the center of the clamping seat 3 for releasing the swing arm assembly 1; flexible capture assemblies 2 are provided on both sides of the clamping seat 3, and when the swing arm assembly 1 is released, the swing arm assembly 1 is captured by the flexible deformation of the flexible capture assembly 2.

[0053] like Figure 4 As shown, in order to realize the clamping, locking and rotation functions of the swing arm assembly 1, the swing arm assembly 1 in this embodiment includes a swing arm 11, a clamping connector 12, a lubrication pad 13, a force nut 14, a recovery spring 15, a fixing nut 16, a guide plate 17 and a recovery cylinder assembly 18.

[0054] The swing arm assembly 1 is a symmetrical structure, and the structures on both sides are connected by a clamping connector 12. Taking one side as an example, a locking groove 117 is provided at the upper end of the swing arm 11 for clamping the load; the lower end of the swing arm 11 is used to connect with the clamping connector 12; the recovery tube assembly 18 is fixed to the outer side of the lower end of the swing arm 11, and the end of the clamping connector 12 is fixedly connected to the force nut 14, and the recovery spring 15 is sleeved on the outside of the force nut 14, and the guide plate 17 presses the recovery spring 15 onto the outer end face of the swing arm 11, and the guide plate 17 is fixed to the clamping connector 12 by the fixing nut 16.

[0055] like Figure 5a , Figure 5b , Figure 5c As shown, the swing arm 11 is T-shaped as a whole, and the vertical side of the T is provided with a rectangular lightening groove 111, a spherical lubrication groove 112, a central through hole 113, a limiting column 114 and a shaft hole 115; wherein the shaft hole 115 is used to cooperate with the shaft assembly 5, and the limiting column 114 is arranged at the lower end of the swing arm 11, and is used to cooperate with the clamping seat 3; the central through hole 113 intersects with the lubrication groove 112 and the axis passes through the spherical center of the lubrication groove 112; the horizontal side of the T is provided with an outer protrusion, i.e., the front end 116 of the swing arm, and a locking groove 117 is arranged at the front end 116 of the swing arm, wherein the paired swing arms 11 can clamp the load through the locking groove 117. Preferably, the locking groove 117 is a trapezoidal groove, and the projections of the locking groove 117 on its two symmetric planes are both trapezoidal, which can effectively restrain the load and facilitate separation when unlocking, and the angle between the above-mentioned trapezoidal surface and the corresponding symmetric surface can be taken as 30°. The diameter of the center through hole 113 should be determined based on the diameter of the clamping connector 12 and the deformation angle of the swing arm 11 after the preload force is applied, so that the clamping rod connector 12 does not interfere with the center through hole 113. A reasonable set of diameter data is a center through hole 113 diameter of 6.5 mm and a clamping connector 12 diameter of 4.3 mm.

[0056] The clamping connector 12 is a long multi-stage cylindrical shape; the middle is a fixed-length cylinder, and the two ends are threaded. The threaded ends can be connected to the force nut 14 and the fixing nut 16. By controlling the rotation angle of the force nut 14, the length of the fixed-length cylinder can be controlled, thereby applying a specific preload. The rotation control of the force nut 14 should be symmetrical and applied slowly to avoid bending of the clamping connector 12.

[0057] The lubricating pad 13 is placed in the spherical segment-shaped lubricating groove 112 ; the lubricating pad 13 is composed of a spherical segment and a cylindrical segment, wherein the diameter of the spherical segment is smaller than the diameter of the lubricating groove 112 , ensuring that the lubricating pad 13 can rotate at a small angle in the lubricating groove 112 .

[0058] The recovery spring 15 is a hollow cylindrical spring, and should ensure that one end of the recovery spring 15 is always in contact with the swing arm 11 and the other end is in contact with the guide plate 17 in the released state.

[0059] The guide plate 17 is a hollow cylinder, and both sides of the cylindrical surface should have rounded corners to accommodate the deflection during the guiding process.

[0060] like Figure 6 As shown, the recovery cylinder assembly 18 includes a cylinder body 181 , a buffer element 182 , a bearing plate 183 and a capture column 184 .

[0061] The cylinder 181 is open at one end and has a central hole at the other end. A square flange is provided on the outside of the open end for fixed connection with the swing arm 11. The load-bearing plate 183 fixes the buffer element 182 on the inner wall surface of the central hole end. The buffer element 182 and the load-bearing plate 183 are both hollow cylinders, capable of buffering the impact of the guide plate 17. The capture column 184 is columnar and located at the edge of the square flange, corresponding to the position of the flexible capture component 2. After the swing arm 11 is swung open, it is captured by the flexible capture component 2. Preferably, a ball head is added to the columnar end of the capture column 184, which is more conducive to the entry of the flexible capture component 2. According to the test results, the capture effect is best when the ball head of the capture column 184 exceeds the installation interface 23 by 1.5mm.

[0062] like Figure 7a , Figure 7b As shown, the flexible capture assembly 2 includes four flexible sheets, two of which form a group, which surround the outer circumference of the recovery barrel assembly 18, and the two groups are symmetrical about the load movement direction axis; taking one flexible sheet as an example, it includes a guide sheet 21 and a storage portion.

[0063] The storage portion is provided with a storage groove 22 and an installation interface 23. The guide sheet 21 forms a certain angle with the plane where the storage groove 22 is located to play a guiding function. The flexible capture component 2 is installed on both sides of the clamping seat 3 through the installation interface 23. Preferably, the flexible capture component 2 uses a 0.1 mm thick copper sheet to maintain the basic shape and withstand greater force. Although its density is greater than that of commonly used aluminum alloys and titanium alloys, it is lighter in weight due to a more significant volume reduction factor. By modifying the position of the installation interface 23 and the shape of the storage groove 22, the storage position of the swing arm assembly 1 can be effectively designed to avoid interference with the celestial body.

[0064] like Figure 8a , Figure 8b As shown, the pressing seat 3 is provided with a release device channel 31 , a shaft hole 32 , a pressing connector channel 33 , an anti-rotation pin hole 34 , a bottom plate 35 and a flexible capture component mounting interface 36 .

[0065] The release device channel 31 and the clamping connector channel 33 are both cylindrical holes, and their axes intersect at one point, which are used to install the release device 4 and the clamping connector 12 respectively; the anti-rotation pin hole 34 is set on the side of the clamping seat, and the shaft hole 32 intersects with the anti-rotation pin hole 34 at 90°. The rotation of the shaft assembly 5 is restricted by inserting a limiting part into the anti-rotation pin hole 34. There is a chamfer on the open side of the bottom plate 35, which can cooperate with the limiting column 114 to prevent the swing arm assembly 1 from moving out of control. The flexible capture assembly installation interface 36 is used to install the flexible capture assembly 2.

[0066] Preferably, since the swing arm assembly 1 is unidirectionally rotatable, the clamping connector channel 33 may not be symmetrical about the clamping connector 12 in the clamped state, so as to give full play to the anti-interference function of the clamping connector channel 33. By reasonably adjusting the distance between the clamping seat 3 and the front end 116 of the swing arm, and correspondingly modifying the gap between the rotating shaft 51 and the rotating shaft hole 115, the rotating shaft 51 can be not on the main force transmission path, ensuring the reliable swing-opening function.

[0067] The release device 4 is located between the two swing arms 11, and can cut off the compression connector 12 through mechanical energy and thermal energy. Preferably, the release device 4 can be a fuse, etc., to further reduce the impact force.

[0068] like Fig. 9 As shown, the rotating shaft assembly 5 includes a rotating shaft 51 , a coil spring 52 and a sliding sheet 53 .

[0069] Hexagonal grooves are provided at both end surfaces of the rotating shaft 51, and the corresponding hexagonal wrench is used to twist the coil spring 52 to apply force; at the same time, a small plane is provided at the center part of the cylindrical surface, which can fix the starting end of the coil spring 52; circular holes are provided at both ends of the rotating shaft 51, which are used to cooperate with the anti-rotation pin hole 34 and the limiting parts to realize the axial positioning and rotation constraint of the rotating shaft assembly 5;

[0070] One end of the coil spring 52 is connected to the rotating shaft 51, and the other end is connected to the swing arm 11. The slide 53 is a hollow cylinder, fixed at both ends of the rotating shaft 51, and is located between the clamping seat 3 and the swing arm 11, with a gap between the two, which can play a role in limiting and lubricating the two.

[0071] During the swinging process of the swing arm 11, the movement trajectory of the locking groove 117 needs to be away from the load, and the movement envelope of the cut-off locking connector 12 does not interfere with the clamping connector channel 33. At the same time, it can adapt to the axis uncertainty caused by the gap between the swing arm 11 and the rotating shaft assembly 5.

[0072] The swing-type clamping and releasing device of the present invention can effectively clamp a 2kg load under 0-100Hz and 15g sinusoidal excitation, and the movement form after release is linear motion. At the same time, there is no need to add additional mass or punch holes to the load, and the release impact is reduced by 60% compared with the traditional clamping and releasing device. By reasonably modifying the parameters, it can also adapt to lightweight loads with complex motion envelopes and complex motion processes and their precise deployment mechanisms.

[0073] The working principle of the present invention is:

[0074] In the clamping state, the two swing arms 11 hold the cylindrical or prismatic part on the load, and the clamping connector 12 is tightened to make the swing arms 11 close to the clamping seat 3 to generate a specified clamping force. The clamping seat 3 is fixedly connected to the star body, thereby realizing a reliable connection between the load and the star body and applying a preload; in the releasing state, the releasing device 4 fixedly mounted on the clamping seat 3 works to cut off the clamping connector 12, and the two swing arms 11 rotate around the rotating shaft assembly 5 and the clamping seat 3 on a fixed axis, and are finally captured by the flexible capturing assembly 2 through the capturing column 184, thereby realizing the functions of reliable clamping, releasing and storing movable parts.

[0075] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A swing type clamping and releasing device, characterized in that: It includes a swing arm assembly, a flexible capture assembly, a pressing seat, a release device and a rotating shaft assembly; The swing arm assembly is fixedly connected to the load by clamping, and the swing arm assembly and the pressing seat are rotationally connected by the rotating shaft assembly, and the pressing seat is used to be fixedly connected to the external star body; a release device is provided at the center of the pressing seat to release the swing arm assembly; flexible capture assemblies are provided on both sides of the pressing seat, and when the swing arm assembly is released, the swing arm assembly is captured by the flexible deformation of the flexible capture assembly; The swing arm assembly includes a swing arm, a clamping connector, a force nut, a recovery spring, a fixing nut, a guide plate and a recovery cylinder assembly; the swing arm assembly is a symmetrical structure, and the structures on both sides are connected by a clamping connector. Taking one side as an example, a locking groove is provided at the upper end of the swing arm for clamping the load; the lower end of the swing arm is used to connect with the clamping connector; the recovery cylinder assembly is fixed to the outer side of the lower end of the swing arm, the end of the clamping connector is fixedly connected to the force nut, a recovery spring is sleeved on the outer side of the force nut, the recovery spring is pressed onto the outer end face of the swing arm by the guide plate, and the guide plate is fixed to the clamping connector by a fixing nut; The recovery cylinder assembly includes a cylinder body, a buffer element, a bearing plate and a capture column; the cylinder body is open at one end and has a central opening at the other end, and a flange is provided on the outer side of the open end for fixed connection with the swing arm; the bearing plate fixes the buffer element on the inner wall surface of the central opening end; the capture column is columnar and located at the edge of the flange, and is captured by the flexible capture assembly after the swing arm is swung open; The flexible capture component includes four flexible sheets, two of which form a group, which embrace the outer circumference of the recovery barrel component, and the two groups are symmetrical about the load movement direction axis; taking one flexible sheet as an example, it includes a guide sheet and a storage portion; a storage groove and an installation interface are provided on the storage portion, and the guide sheet forms a certain angle with the plane where the storage groove is located; the flexible capture component is installed on both sides of the clamping seat through the installation interface.

2. The swing type clamping release device according to claim 1, characterized in that: The clamping seat is provided with a release device channel, a shaft hole, a clamping connector channel, an anti-rotation pin hole and a flexible capture component installation interface; The release device channel and the clamping connector channel are both cylindrical holes, and their axes intersect at one point, which are respectively used to install the release device and the clamping connector; the anti-rotation pin hole is arranged on the side of the clamping seat, and the shaft hole intersects with the anti-rotation pin hole at 90°. By inserting a limiting part in the anti-rotation pin hole, the shaft assembly itself is constrained from rotating.

3. The swing type clamping release device according to claim 2, characterized in that: The release device is located between the two swing arms and cuts off the compression connection piece through mechanical energy or thermal energy.

4. The swing type clamping release device according to claim 2, characterized in that: The rotating shaft assembly includes a rotating shaft, a coil spring and a sliding sheet; There are hexagonal grooves on both end faces of the shaft, which are twisted by the corresponding hexagonal wrench to add force to the coil spring; there are round holes on both ends of the shaft, which are used to cooperate with the anti-rotation pin hole and the limit parts to achieve axial positioning and rotation constraint of the shaft assembly; One end of the coil spring is connected to the rotating shaft, and the other end is connected to the swing arm assembly. The slide is a hollow cylinder, fixed at both ends of the rotating shaft, and is located between the clamping seat and the swing arm assembly, with a gap between the two.

5. The swing type clamping and releasing device according to claim 1, characterized in that: The swing arm is T-shaped, and the vertical side of the T is provided with a rectangular lightening groove, a spherical segment lubrication groove, a central through hole, a limit column and a shaft hole; The shaft hole is used to cooperate with the shaft assembly, and the limit column is arranged at the lower end of the swing arm to cooperate with the clamping seat; the central through hole intersects with the lubrication groove and the axis passes through the center of the lubrication groove; the T-shaped horizontal side is provided with an outer convex portion, and the locking groove is arranged on the outer convex portion, which is a trapezoidal groove.

6. The swing type clamping release device according to claim 5, characterized in that: The outer bottom of the clamping seat is provided with a chamfer for cooperating with the limiting column to prevent the swing arm assembly from moving out of control.

7. The swing type clamping release device according to claim 5, characterized in that: The swing arm assembly also includes a lubrication pad placed in the spherical segment-shaped lubrication groove; The lubricating pad is composed of a spherical segment and a cylindrical segment, wherein the diameter of the spherical segment is smaller than the diameter of the lubricating groove.

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