Rotary fastener and push-pull mechanism

Abstract

The utility model discloses a rotating fastener and a push-pull mechanism. The rotating fastener comprises a bearing plate, a first rotating seat and a telescopic motor, wherein the first rotating seat and the telescopic motor are mounted on the bearing plate; the output end of the telescopic motor faces the first rotating seat; a rotating rod penetrates through the first rotating seat, a convex column is arranged on a rod body at one end, close to the telescopic motor, of the rotating rod, and a grabbing plate is arranged at the other end of the rotating rod; the output end of the telescopic motor is provided with a sleeve, and the end, away from the telescopic motor, of the sleeve slidably sleeves the rotating rod. A first sliding groove is rotationally formed in a sleeve body of the sleeve in the length direction of the sleeve. The protruding column is located in the first sliding groove. According to the utility model, the three-layer (two-stage) telescopic structure of the push-pull mechanism and the rotary fastener are utilized to grab and move the battery. By means of the design, the number of devices is remarkably reduced, and the overall manufacturing cost is further reduced. Meanwhile, due to the fact that the number of driving devices is reduced, the fault probability is greatly reduced, the number of times that maintenance personnel enter the battery replacement cabinet for maintenance is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement for electric vehicles, and in particular to an angle measuring and angle resetting device. Background Art

[0002] In existing battery swap systems, batteries typically rely on motor-driven rollers, tracks, or other similar devices to move them in and out of battery swap cabinets or battery transport vehicles. This traditional technology requires a drive device consisting of a motor and rollers or tracks at the bottom of each battery compartment. However, this model has several significant drawbacks:

[0003] High cost: Since each battery compartment requires the installation of a drive device, the hardware cost of the entire system increases significantly.

[0004] Increased probability of failure: As the number of devices increases, so does the complexity of the system and the potential points of failure. If the drive mechanism at the bottom of a battery compartment fails, it will need to be repaired or replaced, which not only increases maintenance costs but may also affect the normal operation of the entire battery swap system.

[0005] Inconvenient maintenance: The cramped interior of the battery swap cabinet, with its dense concentration of batteries and high-voltage charging lines, makes maintenance work on the internal drive units extremely difficult. Maintenance personnel need to enter the cabinet to perform operations, which is not only time-consuming and labor-intensive, but also poses potential safety risks.

[0006] Safety hazards: When performing maintenance work inside the battery swap cabinet, maintenance personnel may be exposed to safety hazards such as electric shock due to the presence of batteries and high-voltage charging lines. In addition, due to the limited space inside the battery swap cabinet, maintenance personnel may also cause other safety accidents due to improper operation during work.

[0007] In summary, the application of battery-driven devices in the existing technology in the battery replacement system has many shortcomings, and a more efficient, safe and economical battery mobile solution is urgently needed to replace it. Utility Model Content

[0008] The purpose of the present invention is to provide a rotary fastener and a push-pull mechanism to solve the problems raised in the above background technology.

[0009] To achieve the above purpose, the present invention provides the following solutions:

[0010] A rotary fastener comprises a bearing plate, a first rotating seat mounted on the bearing plate, and a telescopic motor;

[0011] The output end of the telescopic motor faces the first rotating seat;

[0012] A rotating rod is provided on the first rotating seat, a convex column is provided on one end of the rotating rod close to the telescopic motor, and a grab plate is provided on the other end of the rotating rod;

[0013] A sleeve is installed on the output end of the telescopic motor, and the end of the sleeve away from the telescopic motor is slidably sleeved on the rotating rod;

[0014] A first sliding groove is formed on the sleeve body along the length direction of the sleeve;

[0015] The protruding column is located in the first sliding groove.

[0016] Furthermore, a plurality of rotating wheels are installed on the grabbing plate.

[0017] Furthermore, a sliding seat is further provided on the carrying plate, and the sliding seat is located between the first rotating seat and the telescopic motor;

[0018] The sliding seat is a U-shaped structure, the bottom plate of the sliding seat is mounted on the bearing plate, and the two side plates of the sliding seat are correspondingly provided with second sliding grooves, and the length direction of the second sliding grooves is parallel to the movement direction of the output end of the telescopic motor;

[0019] The output end of the telescopic motor and the sleeve both pass through the notch of the sliding seat;

[0020] A pin is installed in the second sliding groove, and the pin passes through the output end of the telescopic motor and the sleeve.

[0021] The present invention also provides a push-pull mechanism, comprising a plurality of the above-mentioned rotating fasteners, a mounting frame, a driving portion and a push-pull assembly;

[0022] A plurality of the rotating fasteners are respectively arranged on both sides of the push-pull assembly, and the rotating fasteners on the same side are arranged in opposite directions;

[0023] The driving part is installed in the installation frame, and the push-pull assembly is arranged at the bottom of the installation frame and connected to the driving part;

[0024] The driving part includes a driving motor, a driving ratchet, two sets of first driven wheels, two sets of second driven wheels and a driving belt;

[0025] The output end of the driving motor is sleeved with the active ratchet, the two groups of the first driven wheels are arranged on both sides of the active ratchet, and the two groups of the second driven wheels are respectively arranged at opposite sides of the two groups of the first driven wheels;

[0026] The driving belt is sleeved on the two groups of the second driven wheels, the upper belt body of the driving belt located between the two groups of the second driven wheels is pressed against the rotating surfaces of the two groups of the first driven wheels, and the rotating surface of the active ratchet wheel is pressed against the upper belt body of the driving belt located between the two groups of the first driven wheels.

[0027] Furthermore, it also includes a rotating part;

[0028] The rotating part includes a rotating motor, a fixing plate, a bearing gear and a rotating gear;

[0029] The outer ring of the bearing gear is fixedly mounted on the top of the mounting frame, and the inner ring of the bearing gear is fixedly mounted on the bottom of the fixing plate;

[0030] The output end of the rotating motor vertically passes through the fixing plate and is sleeved with the rotating gear;

[0031] The rotating gear is meshed with the gear outer ring of the bearing gear.

[0032] Furthermore, the push-pull assembly includes a primary push-pull portion;

[0033] The first-level push-pull part includes a first-level push-pull plate, a first-level slide rail and a first-level slide bar;

[0034] The primary slide rail is installed at the bottom end of the installation frame, and the layout direction of the primary slide rail is the same as the layout direction of the driving belt;

[0035] The first-level slide bar is installed on the first-level push-pull plate, and the first-level slide bar is slidably arranged on the first-level slide rail;

[0036] A rack is provided at the top end of the primary push-pull plate, and the arrangement direction of the rack is the same as the arrangement direction of the driving belt; and teeth similar to the rack are installed on the belt body of the driving belt corresponding to the rack.

[0037] Furthermore, the push-pull assembly further includes a secondary push-pull portion;

[0038] The secondary push-pull part includes a secondary push-pull plate, a secondary slide rail and a secondary slide bar;

[0039] The secondary push-pull plate is arranged at the bottom of the primary push-pull plate;

[0040] The secondary slide rail is arranged on the primary push-pull plate, and the layout direction of the secondary slide rail is the same as the layout direction of the primary slide rail;

[0041] The secondary sliding bar is provided on the secondary push-pull plate, and the secondary sliding bar is slidably arranged on the secondary sliding rail;

[0042] The first-stage push-pull plate is staggeredly installed with a first-stage pulley and a second-stage pulley at both ends along the arrangement direction of the rack;

[0043] A primary belt is fixed to the mounting frame, one end of the primary belt is fixed to the bottom of the mounting frame, and the other end extends away from the mounting frame and is sleeved on the primary pulley and rotatably fixed to the top of the secondary push-pull plate;

[0044] A secondary belt is fixed on the secondary push-pull plate, one end of the secondary belt is fixed to the top of the secondary push-pull plate, and the other end extends toward the direction close to the mounting frame, is sleeved on the secondary pulley, and is rotatably fixed to the bottom of the mounting frame;

[0045] The laying directions of the primary belt and the secondary belt are both the same as the laying direction of the driving belt.

[0046] Furthermore, the driving unit further comprises a pinch wheel mounted in the mounting frame, wherein a rotating surface of the pinch wheel presses on a lower belt body of the driving belt located between the two groups of the second driven wheels.

[0047] Furthermore, a primary ball bearing is provided between the sliding contact surface of the primary slide bar and the primary slide rail.

[0048] Furthermore, a secondary ball bearing is provided between the sliding contact surface of the secondary slide bar and the secondary slide rail.

[0049] It can be seen from the above technical solutions that, compared with the prior art, the beneficial effects of the present invention are:

[0050] Significantly Reduces Manufacturing Costs and Maintenance Difficulty: By eliminating the motor and drive devices (such as rollers or tracks) at the bottom of each battery compartment in the battery swap cabinet, this utility model utilizes a three-layer (two-stage) telescopic push-pull mechanism and rotating fasteners to grasp and move the batteries. This design significantly reduces the number of equipment required, thereby lowering the overall cost. Furthermore, the lack of drive devices significantly reduces the probability of failure, reducing the number of times maintenance personnel need to enter the battery swap cabinet for repairs, thereby reducing maintenance costs.

[0051] Improved maintenance safety: In existing technologies, when the internal drive device of a battery swap cabinet fails, maintenance personnel need to enter the cabinet to perform repairs, facing potential risks such as limited space and densely packed batteries and high-voltage charging lines. However, the present utility model uses a push-pull mechanism and a rotating fastener design to externalize the battery movement function, eliminating the need for maintenance personnel to enter the cabinet, thereby improving the safety of maintenance operations.

[0052] Enhanced battery handling flexibility: The push-pull mechanism of this utility model not only has a telescopic function, but also achieves flexible battery handling through the rotation design of the rotating fastener. This function improves the flexibility and efficiency of battery handling, making it easier to load and unload batteries into and out of the battery swap cabinet or battery transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0054] Figure 1 This is a structural diagram of a rotary fastener in an embodiment of the present utility model;

[0055] Figure 2 This is a schematic structural diagram of the push-pull mechanism in an embodiment of the present utility model;

[0056] Figure 3 This is a schematic diagram of the structure of the rotating part connected to the mounting frame in an embodiment of the present utility model;

[0057] Figure 4-6 This is a schematic diagram of the structure of the driving part connected to the primary push-pull part in an embodiment of the present utility model;

[0058] Figure 7-8 This is a schematic diagram of the structure of the driving part connecting the primary push-pull part and the secondary push-pull part in an embodiment of the present utility model;

[0059] Figure 9 This is a schematic diagram of the installation of the primary belt and the secondary belt in an embodiment of the present utility model.

[0060] Description of reference numerals:

[0061] 1. Rotating fastener; 1-1. Loading plate; 1-2. First rotating seat; 1-3. Telescopic motor; 1-4. Rotating rod; 1-5. Boss; 1-6. Grab plate; 1-7. Sleeve; 1-8. First chute; 1-9. Rotating wheel; 1-10. Sliding seat; 1-11. Second chute; 1-12. Pin;

[0062] 2. Install the frame;

[0063] 3. Driving unit; 3-1. Driving motor; 3-2. Driving ratchet; 3-3. First driven pulley; 3-4. Second driven pulley; 3-5. Driving belt; 3-6. Second rotating base; 3-7. Belt pressure roller;

[0064] 4. First-level push-pull unit; 4-1. First-level push-pull plate; 4-2. First-level slide rail; 4-3. First-level slide bar; 4-4. Rack; 4-5. First-level pulley; 4-6. First-level belt; 4-7. First-level ball bearing;

[0065] 5. Secondary push-pull unit; 5-1. Secondary push-pull plate; 5-2. Secondary slide rail; 5-3. Secondary slide bar; 5-4. Secondary pulley; 5-5. Secondary belt; 5-6. Secondary ball bearing;

[0066] 6. Rotating part; 6-1. Rotating motor; 6-2. Fixed plate; 6-3. Bearing gear; 6-4. Rotating gear. DETAILED DESCRIPTION

[0067] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0068] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0071] In order to better understand the purpose, structure and function of the present invention, the present invention is described in further detail below with reference to the accompanying drawings.

[0072] Example 1

[0073] See Figure 1 As shown, a rotary fastener provided in this embodiment includes a bearing plate 1-1, a first rotating seat 1-2 mounted on the bearing plate 1-1, and a telescopic motor 1-3;

[0074] The output end of the telescopic motor 1-3 faces the first rotating seat 1-2;

[0075] A rotating rod 1-4 is provided on the first rotating seat 1-2. A protruding column 1-5 is provided on one end of the rotating rod 1-4 close to the telescopic motor 1-3, and a grab plate 1-6 is provided on the other end of the rotating rod 1-4.

[0076] A sleeve 1-7 is installed on the output end of the telescopic motor 1-3, and the end of the sleeve 1-7 away from the telescopic motor 1-3 is slidably sleeved on the rotating rod 1-4;

[0077] A first sliding groove 1-8 is formed on the sleeve 1-7 along the length direction of the sleeve 1-7;

[0078] The boss 1-5 is located in the first sliding groove 1-8.

[0079] Specifically, when the output end of the telescopic motor 1-3 performs telescopic operation, it will drive the sleeve 1-7 to move. Due to the cooperation between the first slide groove 1-8 and the boss 1-5, it will drive the rotating rod 1-4 to rotate around the first rotating seat 1-2, thereby causing the grab plate 1-6 to rotate.

[0080] It should be noted that several wheels 1-9 can be installed on the grab plate 1-6. For specific installation methods, please refer to Figure 1 As shown, the friction on the grasped object can be reduced.

[0081] To further optimize the solution, a sliding seat 1-10 is further provided on the carrying plate 1-1, and the sliding seat 1-10 is located between the first rotating seat 1-2 and the telescopic motor 1-3;

[0082] The sliding seat 1-10 is a "U"-shaped structure. The bottom plate of the sliding seat 1-10 is installed on the bearing plate 1-1. The two side plates of the sliding seat 1-10 are correspondingly provided with second sliding grooves 1-11. The length direction of the second sliding grooves 1-11 is parallel to the movement direction of the output end of the telescopic motor 1-3.

[0083] The output end of the telescopic motor 1-3 and the sleeve 1-7 both pass through the notch of the sliding seat 1-10;

[0084] A pin 1-12 is installed in the second slide groove 1-11, and the pin 1-12 passes through the output end of the telescopic motor 1-3 and the sleeve 1-7.

[0085] Specifically, the sliding seat 1-10 cooperates with the second sliding groove 1-11 and the latch to guide the displacement process of the output end of the telescopic motor 1-3 and the sleeve 1-7, prevents displacement, and enhances stability.

[0086] Example 2

[0087] See Figure 4-6 As shown, this embodiment provides a push-pull mechanism, including the rotary fastener 1 in the first embodiment, as well as the mounting frame 2, the driving part 3 and the push-pull assembly;

[0088] A plurality of rotating fasteners 1 are respectively arranged on both sides of the push-pull assembly, and the rotating fasteners 1 on the same side are arranged in opposite directions (the number of rotating fasteners 1 is preferably an even number and is greater than or equal to 4);

[0089] The driving part 3 is installed in the installation frame 2 , and the push-pull assembly is arranged at the bottom of the installation frame 2 and connected to the driving part 3 .

[0090] Specifically, the driving unit 3 includes a driving motor 3-1, a driving ratchet 3-2, two sets of first driven wheels 3-3, two sets of second driven wheels 3-4 and a driving belt 3-5;

[0091] The output end of the driving motor 3-1 is sleeved with an active ratchet 3-2, two sets of first driven wheels 3-3 are arranged on both sides of the active ratchet 3-2, and two sets of second driven wheels 3-4 are arranged at opposite ends of the two sets of first driven wheels 3-3;

[0092] The driving belt 3-5 is sleeved on the two groups of second driven wheels 3-4. The upper belt body of the driving belt 3-5 located between the two groups of second driven wheels 3-4 is pressed on the rotating surfaces of the two groups of first driven wheels 3-3, and the rotating surface of the active ratchet 3-2 is pressed on the upper belt body of the driving belt 3-5 located between the two groups of first driven wheels 3-3.

[0093] It should be noted that the push-pull assembly includes a primary push-pull portion 4;

[0094] The first-level push-pull part 4 includes a first-level push-pull plate 4-1, a first-level slide rail 4-2 and a first-level slide bar 4-3;

[0095] The primary slide rail 4-2 is installed at the bottom end of the installation frame 2, and the layout direction of the primary slide rail 4-2 is the same as the layout direction of the drive belt 3-5;

[0096] A first-level slide bar 4-3 is installed on the first-level push-pull plate 4-1, and the first-level slide bar 4-3 is slidably mounted on the first-level slide rail 4-2;

[0097] A rack 4-4 is provided at the top of the first-level push-pull plate 4-1. The layout direction of the rack 4-4 is the same as that of the drive belt 3-5. The belt body of the drive belt 3-5 corresponding to the rack 4-4 is equipped with teeth similar to those of the rack 4-4.

[0098] The rotary fastener 1 is installed on the first-level push-pull plate 4-1 (it should be noted that the number and installation method of the rotary fasteners can be selected according to actual needs, this embodiment does not limit it, and the drawings do not show the effect of the rotary fastener).

[0099] Specifically, the driving motor 3-1 drives the active ratchet 3-2 to rotate, and with the cooperation of the second driven wheel 3-4, the first driven wheel 3-3, and the active ratchet 3-2, the driving belt 3-5 rotates, thereby driving the teeth on the driving belt 3-5 to move, which in turn drives the rack 4-4 to move, and finally drives the first-level push-pull plate 4-1 to move, thereby making the first-level push-pull plate 4-1 extend and retract relative to the mounting frame 2.

[0100] The components of the driving part 3 can also be increased, such as setting a pinch roller 3-7 inside the mounting frame 2, such as Figure 4 As shown, multiple pressure rollers 3-7 can be arranged. The rotating surface of the pressure roller 3-7 presses the lower belt body of the drive belt 3-5 located between the two sets of second driven wheels 3-4, which can provide downward pressure on the drive belt 3-5 to ensure the engagement of the rack 4-4 and the teeth.

[0101] In addition, if Figure 6 As shown, a primary ball 4-7 is provided between the sliding contact surfaces of the primary slide bar 4-3 and the primary slide rail 4-2, which can reduce the friction force during the sliding process between the primary slide bar 4-3 and the primary slide rail 4-2.

[0102] Example 3

[0103] See Figure 7-9 As shown, this embodiment provides a push-pull mechanism, which differs from the second embodiment in that the push-pull assembly is additionally provided with a secondary push-pull portion 5;

[0104] The secondary push-pull part 5 includes a secondary push-pull plate 5-1, a secondary slide rail 5-2 and a secondary slide bar 5-3;

[0105] The secondary push-pull plate 5-1 is arranged at the bottom of the primary push-pull plate 4-1;

[0106] A secondary slide rail 5-2 is provided on the primary push-pull plate 4-1, and the layout direction of the secondary slide rail 5-2 is the same as that of the primary slide rail 4-2;

[0107] A secondary slide bar 5-3 is provided on the secondary push-pull plate 5-1, and the secondary slide bar 5-3 is slidably provided on the secondary slide rail 5-2;

[0108] The first-stage push-pull plate 4-1 is staggeredly installed with a first-stage pulley 4-5 and a second-stage pulley 5-4 at both ends along the layout direction of the rack 4-4;

[0109] A primary belt 4-6 is fixed to the mounting frame 2, one end of the primary belt 4-6 is fixed to the bottom of the mounting frame 2, and the other end extends away from the mounting frame 2 and is sleeved on the primary pulley 4-5 and rotatably fixed to the top of the secondary push-pull plate 5-1;

[0110] A secondary belt 5-5 is fixed on the secondary push-pull plate 5-1. One end of the secondary belt 5-5 is fixed to the top of the secondary push-pull plate 5-1, and the other end extends toward the direction close to the mounting frame 2 and is sleeved on the secondary pulley 5-4 and rotatably fixed to the bottom of the mounting frame 2.

[0111] The laying direction of the primary belt 4-6 and the secondary belt 5-5 is the same as the laying direction of the driving belt 3-5.

[0112] The rotary fastener 1 is installed on the secondary push-pull plate 5-1 (it should be noted that the number and installation method of the rotary fasteners can be selected according to actual needs, this embodiment does not limit it, and the drawings do not show the effect of the rotary fastener).

[0113] Specifically, the addition of the secondary push-pull portion 5 can transform the push-pull mechanism from a two-layer (one-level) telescopic structure to a three-layer (two-level) telescopic structure, thus providing a better telescopic function.

[0114] The additional primary belt 4-6 and secondary belt 5-5 enable the secondary push-pull part 5 to extend and retract without the need for a motor drive, and can be driven by belts.

[0115] In addition, if Figure 8 As shown, a secondary ball 5-6 is provided between the sliding contact surfaces of the secondary slide bar 5-3 and the secondary slide rail 5-2, which can reduce the friction force during the sliding process between the secondary slide bar 5-3 and the secondary slide rail 5-2.

[0116] Example 4

[0117] See Figure 2 、 7 As shown, this embodiment provides a push-pull mechanism, which differs from the third embodiment in that the driving part 3 and the first-level push-pull part 4 are respectively arranged into two groups (the driving motor 3-1 is still one), and two correspondingly arranged second rotating seats 3-6 are added between the active ratchet wheels 3-2 of the two groups of driving parts 3. The output shaft of the driving motor 3-1 passes through the two active ratchets 3-2 and the two second rotating seats 3-6 in sequence, so that one driving motor 3-1 drives the two driving parts 3 to operate, and also drives the two first-level push-pull parts 4 to extend and retract at the same time.

[0118] Correspondingly, such as Figure 7 As shown, on this basis, the secondary push-pull parts 5 are also increased to two groups (the secondary push-pull plate 5-1 is still one), thereby achieving a more stable push-pull effect.

[0119] like Figure 7 As shown, the rotating fasteners 1 are preferably provided in four groups, which are installed in pairs on the two side walls of the secondary push-pull portion 5, so as to better achieve the grasping of objects such as batteries.

[0120] Example 5

[0121] See Figure 2 、 3 As shown, this embodiment provides a push-pull mechanism, which differs from the fourth embodiment in that a rotating part 6 is additionally provided;

[0122] The rotating part 6 includes a rotating motor 6-1, a fixing plate 6-2, a bearing gear 6-3 and a rotating gear 6-4;

[0123] The outer ring of the bearing gear 6-3 is fixedly mounted on the top of the mounting frame 2, and the inner ring of the bearing gear 6-3 is fixedly mounted on the bottom of the fixing plate 6-2;

[0124] The output end of the rotating motor 6-1 vertically passes through the fixed plate 6-2 and is sleeved with the rotating gear 6-4;

[0125] The rotating gear 6-4 meshes with the gear outer ring of the bearing gear 6-3.

[0126] Specifically, when the rotating motor 6-1 drives the rotating gear 6-4 to rotate, it will drive the outer ring of the bearing gear 6-3 to rotate around the inner ring of the bearing gear 6-3, thereby driving the mounting frame to rotate, thereby driving the first-level push-pull part 4 and the second-level push-pull part 5 to rotate.

[0127] It should be noted that the present invention is not limited to the three-layer (two-stage) telescopic function, but can also add new push-pull parts to achieve the four-layer (three-stage) telescopic function, the five-layer (four-stage) telescopic function, and so on; it can be achieved by simply adding the same structure to the structure of the first-level push-pull part 4 and the second-level push-pull part 5, and no further details will be given here.

[0128] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A rotary fastener, characterized in that: It comprises a bearing plate, a first rotating seat mounted on the bearing plate, and a telescopic motor; The output end of the telescopic motor faces the first rotating seat; A rotating rod is provided on the first rotating seat, a convex column is provided on one end of the rotating rod close to the telescopic motor, and a grab plate is provided on the other end of the rotating rod; A sleeve is installed on the output end of the telescopic motor, and the end of the sleeve away from the telescopic motor is slidably sleeved on the rotating rod; A first sliding groove is formed on the sleeve body along the length direction of the sleeve; The protruding column is located in the first sliding groove.

2. A rotary fastener according to claim 1, characterized in that: A plurality of rotating wheels are installed on the grabbing plate.

3. The rotary fastener according to claim 1, characterized in that: The carrying plate is further provided with a sliding seat, and the sliding seat is located between the first rotating seat and the telescopic motor; The sliding seat is a "U"-shaped structure, the bottom plate of the sliding seat is mounted on the bearing plate, and the two side plates of the sliding seat are correspondingly provided with second sliding grooves, and the length direction of the second sliding grooves is parallel to the movement direction of the output end of the telescopic motor; The output end of the telescopic motor and the sleeve both pass through the notch of the sliding seat; A pin is installed in the second sliding groove, and the pin passes through the output end of the telescopic motor and the sleeve.

4. A push-pull mechanism comprising a plurality of rotary fasteners according to any one of claims 1 to 3, characterized in that: It also includes an installation frame, a drive unit and a push-pull assembly; A plurality of the rotating fasteners are respectively arranged on both sides of the push-pull assembly, and the rotating fasteners on the same side are arranged in opposite directions; The driving part is installed in the installation frame, and the push-pull assembly is arranged at the bottom of the installation frame and connected to the driving part; The driving part includes a driving motor, a driving ratchet, two sets of first driven wheels, two sets of second driven wheels and a driving belt; The output end of the driving motor is sleeved with the active ratchet, the two groups of the first driven wheels are arranged on both sides of the active ratchet, and the two groups of the second driven wheels are respectively arranged at opposite sides of the two groups of the first driven wheels; The driving belt is sleeved on the two groups of the second driven wheels, the upper belt body of the driving belt located between the two groups of the second driven wheels is pressed against the rotating surfaces of the two groups of the first driven wheels, and the rotating surface of the active ratchet wheel is pressed against the upper belt body of the driving belt located between the two groups of the first driven wheels.

5. A push-pull mechanism according to claim 4, characterized in that: Also includes a rotating portion; The rotating part includes a rotating motor, a fixing plate, a bearing gear and a rotating gear; The outer ring of the bearing gear is fixedly mounted on the top of the mounting frame, and the inner ring of the bearing gear is fixedly mounted on the bottom of the fixing plate; The output end of the rotating motor vertically passes through the fixing plate and is sleeved with the rotating gear; The rotating gear is meshed with the gear outer ring of the bearing gear.

6. A push-pull mechanism according to claim 4 or 5, characterized in that: The push-pull assembly includes a primary push-pull portion; The first-level push-pull part includes a first-level push-pull plate, a first-level slide rail and a first-level slide bar; The primary slide rail is installed at the bottom end of the installation frame, and the layout direction of the primary slide rail is the same as the layout direction of the driving belt; The first-level slide bar is installed on the first-level push-pull plate, and the first-level slide bar is slidably arranged on the first-level slide rail; A rack is provided at the top end of the primary push-pull plate, and the arrangement direction of the rack is the same as the arrangement direction of the driving belt; and teeth similar to the rack are installed on the belt body of the driving belt corresponding to the rack.

7. A push-pull mechanism according to claim 6, characterized in that: The push-pull assembly further includes a secondary push-pull portion; The secondary push-pull part includes a secondary push-pull plate, a secondary slide rail and a secondary slide bar; The secondary push-pull plate is arranged at the bottom of the primary push-pull plate; The secondary slide rail is arranged on the primary push-pull plate, and the layout direction of the secondary slide rail is the same as the layout direction of the primary slide rail; The secondary sliding bar is provided on the secondary push-pull plate, and the secondary sliding bar is slidably arranged on the secondary sliding rail; The first-stage push-pull plate is staggeredly installed with a first-stage pulley and a second-stage pulley at both ends along the arrangement direction of the rack; A primary belt is fixed to the mounting frame, one end of the primary belt is fixed to the bottom of the mounting frame, and the other end extends away from the mounting frame and is sleeved on the primary pulley and rotatably fixed to the top of the secondary push-pull plate; A secondary belt is fixed on the secondary push-pull plate, one end of the secondary belt is fixed to the top of the secondary push-pull plate, and the other end extends toward the direction close to the mounting frame, is sleeved on the secondary pulley, and is rotatably fixed to the bottom of the mounting frame; The laying directions of the primary belt and the secondary belt are both the same as the laying direction of the driving belt.

8. A push-pull mechanism according to claim 6, characterized in that: The driving part further includes a pinch wheel installed in the installation frame, wherein the rotating surface of the pinch wheel presses the lower belt body of the driving belt between the two groups of the second driven wheels.

9. The push-pull mechanism according to claim 6, characterized in that: A primary ball bearing is provided between the sliding contact surface of the primary slide bar and the primary slide rail.

10. The push-pull mechanism according to claim 7, characterized in that: A secondary ball bearing is provided between the sliding contact surface of the secondary slide bar and the secondary slide rail.

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