Toothed clutch separation and avoidance mechanism

Abstract

The utility model relates to a kind of toothed clutch separation avoidance mechanisms, it relates to aerospace equipment and device technical field.The utility model solves the problem that existing folding wing unfolding mechanism is difficult to realize separation with folding wing after completing folding wing unfolding action, and cannot completely avoid interference and collision with aircraft wing surface and body during throwing-off process.The end of the drive shaft is fixedly connected with upper toothed clutch, the both ends of spring are respectively abutted with the upper part of lower toothed clutch and the lower part of upper toothed clutch, the bottom of external connecting cylinder is fixedly connected with the bottom of lower toothed clutch, the top of external connecting cylinder is rotatably connected with the first end of folding connecting rod by pin shaft, one end of torsion spring is pressed on the upper surface of external connecting cylinder, the other end of torsion spring is clamped on the mounting column of folding connecting rod, the end of folding wing clutch is provided with folding wing clutch key groove, and the end of folding connecting rod is provided with folding wing clutch key matched with folding wing clutch key groove.The utility model is used to realize the avoidable throwing-off of folding wing unfolding mechanism.

Description

Technical Field

[0001] This invention relates to the field of aerospace equipment and technology, specifically to a jaw clutch separation and avoidance mechanism. Background Technology

[0002] The use of folding wings in aircraft can meet the lateral dimensional constraints of the launch platform, the different control capability requirements of different flight segments in the flight profile, and also improve the platform's loading capacity, enabling multi-platform adaptability and facilitating ground maintenance. In contrast, traditional folding wing deployment mechanisms are fixedly connected to the aircraft, becoming useless load-bearing components after fulfilling their intended function, thus affecting the overall weight of the aircraft and reducing its range. Therefore, to reduce the aircraft's weight and increase its range, a folding wing design is necessary.

[0003] To achieve the goals of weight reduction and increased range for aircraft, the folding wing deployment mechanism needs to be able to detach and be jettisoned after the folding wings have fully deployed. Simultaneously, interference with the aircraft's wings and fuselage during jettisoning must be avoided, requiring obstacle avoidance maneuvers. Because of the uncertainty of environmental conditions during separation, interference and collisions between the separation components and the aircraft are common, potentially leading to damage and crashes. Therefore, before jettisoning the separation components, the drive mechanism must be separated from the folding wings, and obstacle avoidance maneuvers must be implemented to ensure the safe jettisoning of the components, thereby reducing aircraft weight and increasing range.

[0004] Therefore, there is an urgent need for a folding wing deployment mechanism that can achieve avoidance and ejection, thereby reducing the weight of the aircraft and increasing its range.

[0005] The purpose of this invention is to solve the problem that in existing folding wing deployment mechanisms, the drive mechanism is difficult to separate from the folding wing after the folding wing deployment action is completed, and interference and collision with the aircraft wing surface and fuselage cannot be completely avoided during the jettison process. Therefore, this invention provides a jaw clutch separation and avoidance mechanism.

[0006] The technical solution of this invention is:

[0007] A jaw clutch separation and avoidance mechanism includes a drive shaft 1, a bracket 2, a lower jaw clutch 3, an upper jaw clutch 4, an external connecting cylinder 5, a folding connecting rod 6, a folding wing clutch 7, a torsion spring 8, and a spring 9. The bracket 2 has bearing mounting holes. The drive shaft 1 is rotatably connected via bearings. The first end of the drive shaft 1 is connected to an external drive mechanism, and the second end of the drive shaft 1 is fixedly connected to the upper jaw clutch 4. The lower jaw clutch 3 is sleeved on the drive shaft 1. A spring 9 is provided between the lower jaw clutch 3 and the upper jaw clutch 4. The spring 9 is sleeved on the drive shaft 1, and its two ends abut against the upper part of the lower jaw clutch 3 and the lower part of the upper jaw clutch 4, respectively. The external connecting cylinder 5 is sleeved outside the lower jaw clutch 3, and its bottom is flush with the lower jaw clutch 4. The clutch 3 is fixedly connected at the bottom. The bearing mounting hole end of the bracket 2 is provided with a bracket groove 2-1. The bottom end face of the lower tooth clutch 3 is provided with an extension key 3-1 that matches the bracket groove 2-1. The top of the external connecting cylinder 5 is rotatably connected to the head end of the folding connecting rod 6 through a pin. The side of the head end of the folding connecting rod 6 is provided with a mounting post 6-1. The mounting post 6-1 is arranged parallel to the pin. A torsion spring 8 is installed on the pin. One end of the torsion spring is pressed against the upper surface of the external connecting cylinder 5, and the other end of the torsion spring 8 is snapped into the mounting post 6-1 of the folding connecting rod 6. The folding wing clutch 7 is installed on the folding wing. The end of the folding wing clutch 7 is provided with a folding wing clutch keyway. The end of the folding connecting rod 6 is provided with a folding wing clutch key 6-2 that matches the folding wing clutch keyway.

[0008] Furthermore, the lower tooth clutch 3 includes a lower tooth clutch body, a lower tooth clutch end plate, and multiple lower teeth. The lower tooth clutch body has a hollow sleeve structure. The bottom of the lower tooth clutch body is provided with an integrally formed lower tooth clutch end plate. The lower tooth clutch end plate has a lower tooth clutch shaft hole in the center. The inner diameter of the lower tooth clutch shaft hole is smaller than the inner diameter of the lower tooth clutch body. The diameter of the drive shaft 1 is smaller than the inner diameter of the lower tooth clutch shaft hole. Multiple lower teeth are evenly distributed along the circumferential direction on the top end face of the lower tooth clutch body.

[0009] Furthermore, the upper tooth clutch 4 includes an upper tooth clutch body, an upper tooth clutch end plate, and multiple upper teeth. The upper tooth clutch body has a hollow sleeve structure. The bottom of the upper tooth clutch body is provided with an integrally formed upper tooth clutch end plate. The upper tooth clutch end plate has an upper tooth clutch shaft hole in the center. The inner diameter of the upper tooth clutch shaft hole is smaller than the inner diameter of the upper tooth clutch body. The diameter of the drive shaft 1 is smaller than the inner diameter of the upper tooth clutch shaft hole. Multiple upper teeth are evenly distributed along the circumferential direction on the bottom end face of the upper tooth clutch body.

[0010] Furthermore, the lower tooth type clutch 3 and the upper tooth type clutch 4 engage through the teeth on their two end faces.

[0011] Furthermore, one end of the spring 9 is coaxially inserted into the inner hole of the lower tooth clutch body, and the end of the spring 9 abuts against the upper surface of the lower tooth clutch end plate. The other end of the spring 9 is coaxially inserted into the inner hole of the upper tooth clutch body, and the end of the spring 9 abuts against the lower surface of the upper tooth clutch end plate.

[0012] Furthermore, the inner side of the upper tooth clutch 4 is uniformly provided with multiple upper tooth clutch splines along the circumferential direction, and the side of the end of the drive shaft 1 is machined with multiple upper tooth clutch spline grooves that match the multiple upper tooth clutch splines. The upper tooth clutch 4 is connected to the drive shaft 1 through splines, and the end of the drive shaft 1 is machined with external threads. The lock nut is threadedly connected to the end of the drive shaft 1.

[0013] Furthermore, the bottom side of the lower tooth clutch 3 is uniformly provided with multiple lower tooth clutch splines along the circumferential direction, and the bottom end face of the external connecting cylinder 5 is provided with multiple lower tooth clutch spline grooves that match the multiple lower tooth clutch splines. The lower tooth clutch 3 and the external connecting cylinder 5 are connected by splines.

[0014] Furthermore, the outer connecting cylinder 5 has a radially machined threaded hole 5-2 for connecting the outer connecting cylinder, and the lower tooth clutch 3 has a threaded hole for connecting the lower tooth clutch that matches the threaded hole 5-2 for connecting the outer connecting cylinder. The outer connecting cylinder 5 and the lower tooth clutch 3 are connected by screws.

[0015] Furthermore, the top of the external connecting cylinder 5 is provided with two side ear plates arranged side by side, and the front end of the folding connecting rod 6 is provided with a middle ear plate. The side ear plates and the middle ear plates are machined with matching connecting pin holes. The side ear plates at the top of the external connecting cylinder 5 are rotatably connected to the middle ear plate at the front end of the folding connecting rod 6 by means of a pin.

[0016] Furthermore, locking pin holes are machined radially on both sides of the pin shaft, and cotter pins are inserted into the locking pin holes at both ends of the pin shaft.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The jaw clutch separation and avoidance mechanism of the present invention is used as an auxiliary operation in the process of jettisoning the separation component after the folding wing of an aircraft has completed the unfolding action. In order to avoid interference and collision between the separation component and the aircraft during jettison, the present invention can also realize the separation and avoidance of the folding wing unfolding mechanism after the folding wing unfolding action is completed, thereby ultimately achieving the requirements of reducing the weight of the aircraft and increasing its range.

[0019] 2. The tooth clutch separation and avoidance mechanism of the present invention has a simple mechanical structure and can solve the problem of mechanism separation after the folding wings of small aircraft are unfolded.

[0020] 3. The tooth clutch separation and avoidance mechanism of the present invention uses a tooth-shaped clutch for separation and drives the folding link to avoid interference with the folding wing during the separation process by using a torsion spring.

[0021] 4. The deployment mechanism of the jaw clutch separation and avoidance mechanism of the present invention can be folded into the required cavity of a small aircraft, with high storage efficiency, small size and high reliability. Attached Figure Description

[0022] Figure 1 This is an isometric view of the tooth clutch separation and avoidance mechanism of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the tooth clutch separation and avoidance mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the separation state of the tooth clutch separation and avoidance mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the separation and avoidance mechanism of the dental clutch of the present invention.

[0026] In the diagram: 1 is the drive shaft; 2 is the bracket; 2-1 is the bracket groove; 3 is the lower tooth clutch; 3-1 is the extension key; 4 is the upper tooth clutch; 5 is the external connecting cylinder; 5-2 is the threaded hole for connecting the external connecting cylinder; 6 is the folding connecting rod; 6-1 is the mounting post; 6-2 is the folding wing clutch key; 7 is the folding wing clutch; 8 is the torsion spring; 9 is the spring. Detailed Implementation

[0027] Specific implementation method one: Combining Figures 1 to 4This embodiment describes a jaw clutch separation and avoidance mechanism, comprising a drive shaft 1, a bracket 2, a lower jaw clutch 3, an upper jaw clutch 4, an external connecting cylinder 5, a folding connecting rod 6, a folding wing clutch 7, a torsion spring 8, and a spring 9. The bracket 2 has bearing mounting holes. The drive shaft 1 is rotatably connected via bearings. The first end of the drive shaft 1 is connected to an external drive mechanism, and the second end of the drive shaft 1 is fixedly connected to the upper jaw clutch 4. The lower jaw clutch 3 is sleeved on the drive shaft 1, and a spring 9 is provided between the lower jaw clutch 3 and the upper jaw clutch 4. The spring 9 is sleeved on the drive shaft 1, and its two ends abut against the upper part of the lower jaw clutch 3 and the lower part of the upper jaw clutch 4, respectively. The external connecting cylinder 5 is sleeved outside the lower jaw clutch 3. 5 is fixedly connected to the bottom of the lower tooth clutch 3. The bearing mounting hole end of the bracket 2 is provided with a bracket groove 2-1. The bottom end face of the lower tooth clutch 3 is provided with an extension key 3-1 that matches the bracket groove 2-1. The top of the external connecting cylinder 5 is rotatably connected to the head end of the folding connecting rod 6 through a pin. The side of the head end of the folding connecting rod 6 is provided with a mounting post 6-1. The mounting post 6-1 is arranged parallel to the pin. A torsion spring 8 is installed on the pin. One end of the torsion spring is pressed against the upper surface of the external connecting cylinder 5. The other end of the torsion spring 8 is snapped into the mounting post 6-1 of the folding connecting rod 6. The folding wing clutch 7 is installed on the folding wing. The end of the folding wing clutch 7 is provided with a folding wing clutch keyway. The end of the folding connecting rod 6 is provided with a folding wing clutch key 6-2 that matches the folding wing clutch keyway.

[0028] In this embodiment, the two ends of the torsion spring 8 are fixed to the external connecting cylinder 5 and the folding connecting rod 6, respectively, and the torsion spring 8 is in a compressed state in the initial state. After the folding connecting rod 6 disengages from the folding wing clutch 7, the folding connecting rod 6 rotates around the pin under the force of the torsion spring 8 until it contacts the bracket 2 and stops, completing the throwing and avoidance action.

[0029] In this embodiment, the bottom spline of the lower tooth clutch 3 is machined with an extension key 3-1 that matches the bracket groove 2-1, so that the extension key 3-1 of the lower tooth clutch 3 can be inserted into the bracket groove 2-1 under the action of spring force.

[0030] Specific Implementation Method Two: Combining Figures 1 to 4 This embodiment describes a lower-tooth clutch 3 comprising a lower-tooth clutch body, a lower-tooth clutch end plate, and multiple lower teeth. The lower-tooth clutch body is a hollow sleeve structure. An integrally formed lower-tooth clutch end plate is located at the bottom of the lower-tooth clutch body. A lower-tooth clutch shaft hole is formed at the center of the lower-tooth clutch end plate. The inner diameter of the lower-tooth clutch shaft hole is smaller than the inner diameter of the lower-tooth clutch body. The diameter of the drive shaft 1 is smaller than the inner diameter of the lower-tooth clutch shaft hole. Multiple lower teeth are evenly distributed along the circumferential direction on the top end face of the lower-tooth clutch body. Other components and connections are the same as in specific embodiment one.

[0031] Specific implementation method three: Combining Figures 1 to 4 This embodiment describes the upper-tooth clutch 4, which includes an upper-tooth clutch body, an upper-tooth clutch end plate, and multiple upper teeth. The upper-tooth clutch body has a hollow sleeve-like structure. An integrally formed upper-tooth clutch end plate is located at the bottom of the upper-tooth clutch body. An upper-tooth clutch shaft hole is formed at the center of the upper-tooth clutch end plate. The inner diameter of the upper-tooth clutch shaft hole is smaller than the inner diameter of the upper-tooth clutch body. The diameter of the drive shaft 1 is smaller than the inner diameter of the upper-tooth clutch shaft hole. Multiple upper teeth are evenly distributed along the circumferential direction on the bottom end face of the upper-tooth clutch body. Other components and connections are the same as in specific embodiments one or two.

[0032] Specific implementation method four: Combination Figures 1 to 4 In this embodiment, the lower tooth type clutch 3 and the upper tooth type clutch 4 engage through the teeth on their two end faces. Other components and connections are the same as in specific embodiments one, two, or three.

[0033] Specific Implementation Method Five: Combining Figures 1 to 4 In this embodiment, one end of the spring 9 is coaxially inserted into the inner hole of the lower tooth clutch body, and the end of the spring 9 abuts against the upper surface of the lower tooth clutch end plate. The other end of the spring 9 is coaxially inserted into the inner hole of the upper tooth clutch body, and the end of the spring 9 abuts against the lower surface of the upper tooth clutch end plate. With this configuration, in the initial state, the spring 9 is in a compressed state, and the lower tooth clutch 3 and the upper tooth clutch 4 are in an engaged state. Other components and connections are the same as in specific embodiments one, two, three, or four.

[0034] Specific Implementation Method Six: Combination Figures 1 to 4 In this embodiment, the inner surface of the upper toothed clutch 4 is uniformly provided with multiple upper toothed clutch splines along the circumferential direction. The end side of the drive shaft 1 is machined with multiple upper toothed clutch spline grooves that match the multiple upper toothed clutch splines. The upper toothed clutch 4 and the drive shaft 1 are connected via splines. The end of the drive shaft 1 is machined with external threads, and a lock nut is threaded onto the end of the drive shaft 1. This configuration, with the drive shaft 1 and the upper toothed clutch 4 connected by splines, allows the drive shaft 1 to drive the upper toothed clutch 4 to rotate together, thus preventing slippage. A lock nut is provided at the upper end of the upper toothed clutch 4 to prevent it from disengaging from the drive shaft 1. A spring 9 is used at the lower end of the upper toothed clutch 4 to abut against it, preventing axial movement of the upper toothed clutch 4. Other components and connections are the same as in specific embodiments one, two, three, four, or five.

[0035] Specific implementation method seven: Combination Figures 1 to 4In this embodiment, the lower tooth clutch 3 has multiple lower tooth clutch splines evenly distributed along its circumferential direction on its bottom side. The bottom end face of the external connecting cylinder 5 has multiple lower tooth clutch spline grooves that match the multiple lower tooth clutch splines. The lower tooth clutch 3 and the external connecting cylinder 5 are connected by splines. This configuration, with the lower tooth clutch 3 and the external connecting cylinder 5 connected by splines, allows the lower tooth clutch 3 to drive the external connecting cylinder 5 to rotate and slide along its axial direction. Other components and connections are the same as in specific embodiments one, two, three, four, five, or six.

[0036] Specific implementation method eight: Combination Figures 1 to 4 In this embodiment, the outer connecting cylinder 5 has a radially machined threaded hole 5-2 on its side, and the lower-tooth clutch 3 has a matching threaded hole on its side. The outer connecting cylinder 5 and the lower-tooth clutch 3 are connected by screws. This configuration not only connects the outer connecting cylinder 5 and the lower-tooth clutch 3 via splines, but also provides both the threaded hole 5-2 and the lower-tooth clutch threaded hole, facilitating a secure connection with screws and preventing relative movement. Other components and connections are the same as in specific embodiments one, two, three, four, five, six, or seven.

[0037] Specific Implementation Method Nine: Combining Figure 1 branch Figure 4 In this embodiment, the external connecting cylinder 5 has two side lugs arranged side-by-side at its top, and the folding connecting rod 6 has a central lug at its front end. Matching connecting pin holes are machined on the side lugs and the central lug. The side lugs at the top of the external connecting cylinder 5 are rotatably connected to the central lug at the front end of the folding connecting rod 6 via pins. With this configuration, the external connecting cylinder 5 is connected to the folding connecting rod 6 via pins, and the folding connecting rod 6 can rotate around the pins. The rotation of the external connecting cylinder 5 drives the folding connecting rod 6 to rotate. The folding connecting rod 6 has a folding wing clutch key 6-2 that matches the end of the folding wing clutch 7. The two are connected via the folding wing clutch key 6-2, forming a keyed clutch. They can transmit torque and can separate along the axial direction of the drive shaft 1. The folding wing clutch 7 and the folding connecting rod 6 rotate simultaneously, causing the folding wing to unfold. Other components and connections are the same as in specific embodiments one, two, three, four, five, six, seven, or eight.

[0038] Specific Implementation Method Ten: Combining Figures 1 to 4In this embodiment, locking pin holes are machined radially on both ends of the pin shaft, and cotter pins are inserted into the locking pin holes at both ends of the pin shaft. This arrangement allows the cotter pins on both sides to secure the pin shaft to the external connecting cylinder 5 and the torsion spring 8, preventing the external connecting cylinder 5 and the torsion spring 8 from detaching from the pin shaft. Other components and connections are the same as in embodiments one, two, three, four, five, six, seven, eight, or nine.

[0039] Working principle

[0040] Combination Figures 1 to 4 The working principle of the tooth clutch separation and avoidance mechanism of the present invention is explained as follows: the throwing and avoidance action is achieved by two clutch devices, located at the upper tooth type clutch 4 and the lower tooth type clutch 3, respectively, the folding link 6 and the folding wing clutch 7.

[0041] I. Folding Wing Deployment Stage:

[0042] An external drive mechanism mounted on bracket 2 drives drive shaft 1 to rotate, which in turn drives upper tooth clutch 4 to rotate. Initially, lower tooth clutch 3 is engaged with upper tooth clutch 4 and therefore rotates along with it. Lower tooth clutch 3 is fixedly connected to external connecting cylinder 5, causing it to rotate as well. External connecting cylinder 5 is connected to folding linkage 6 via a pin, causing it to rotate as well. The end of folding linkage 6 engages with folding wing clutch 7 via folding wing clutch key 6-2, causing folding wing clutch 7 to rotate as well, thus driving the folding wing to unfold.

[0043] II. The phase of throwing off and avoiding obstacles:

[0044] After the folding wing rotates to its final position, the extension key 3-1 machined on the lower part of the lower tooth clutch 3 corresponds precisely to the bracket groove 2-1 of the bracket 2. Therefore, under the action of the spring 9, the lower tooth clutch 3 moves axially, causing the extension key 3-1 to precisely engage with the bracket groove 2-1, thus disengaging the upper tooth clutch 4 from the lower tooth clutch 3. As the lower tooth clutch 3 moves axially, it drives the external connecting cylinder 5 to move as well, causing the folding linkage 6 to also move axially and disengage from the folding wing clutch 7. After disengagement, the folding linkage 6 rotates around the pin under the force of the torsion spring 8 until it contacts the bracket 2 and stops, completing the throwing and avoidance action.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tooth clutch separation and avoidance mechanism, characterized in that: It includes a drive shaft (1), a bracket (2), a lower tooth clutch (3), an upper tooth clutch (4), an external connecting cylinder (5), a folding connecting rod (6), a folding wing clutch (7), a torsion spring (8), and a spring (9). The bracket (2) is provided with bearing mounting holes. The drive shaft (1) is rotatably connected through bearings. The head end of the drive shaft (1) is connected to an external drive mechanism. The end of the drive shaft (1) is fixedly connected to the upper tooth clutch (4). The lower tooth clutch (3) is sleeved on the drive shaft (1). A spring (9) is provided between the lower tooth clutch (3) and the upper tooth clutch (4). The spring (9) is sleeved on the drive shaft (1). The two ends of the spring (9) abut against the upper part of the lower tooth clutch (3) and the lower part of the upper tooth clutch (4), respectively. The external connecting cylinder (5) is sleeved outside the lower tooth clutch (3). The bottom of the external connecting cylinder (5) is connected to the lower tooth clutch (4). The bottom of the clutch (3) is fixedly connected. The bearing mounting hole end of the bracket (2) is provided with a bracket groove (2-1). The bottom end face of the lower tooth clutch (3) is provided with an extension key (3-1) that matches the bracket groove (2-1). The top of the external connecting cylinder (5) is rotatably connected to the head end of the folding connecting rod (6) through a pin. The side of the head end of the folding connecting rod (6) is provided with a mounting post (6-1). The mounting post (6-1) is arranged parallel to the pin. A torsion spring (8) is installed on the pin. One end of the torsion spring is pressed against the upper surface of the external connecting cylinder (5). The other end of the torsion spring (8) is snapped onto the mounting post (6-1) of the folding connecting rod (6). The folding wing clutch (7) is installed on the folding wing. The end of the folding wing clutch (7) is provided with a folding wing clutch keyway. The end of the folding connecting rod (6) is provided with a folding wing clutch key (6-2) that matches the folding wing clutch keyway.

2. The tooth clutch separation and avoidance mechanism according to claim 1, characterized in that: The lower tooth clutch (3) includes a lower tooth clutch body, a lower tooth clutch end plate and multiple lower teeth. The lower tooth clutch body is a hollow sleeve structure. The bottom of the lower tooth clutch body is provided with an integrally formed lower tooth clutch end plate. The lower tooth clutch end plate has a lower tooth clutch shaft hole in the center. The inner diameter of the lower tooth clutch shaft hole is smaller than the inner diameter of the lower tooth clutch body. The diameter of the drive shaft (1) is smaller than the inner diameter of the lower tooth clutch shaft hole. Multiple lower teeth are evenly distributed along the circumferential direction on the top end face of the lower tooth clutch body.

3. The tooth clutch separation and avoidance mechanism according to claim 2, characterized in that: The upper tooth clutch (4) includes an upper tooth clutch body, an upper tooth clutch end plate and multiple upper teeth. The upper tooth clutch body is a hollow sleeve structure. The bottom of the upper tooth clutch body is provided with an integrally formed upper tooth clutch end plate. The upper tooth clutch end plate has an upper tooth clutch shaft hole in the center. The inner diameter of the upper tooth clutch shaft hole is smaller than the inner diameter of the upper tooth clutch body. The diameter of the drive shaft (1) is smaller than the inner diameter of the upper tooth clutch shaft hole. Multiple upper teeth are evenly distributed along the circumferential direction on the bottom end face of the upper tooth clutch body.

4. The tooth clutch separation and avoidance mechanism according to claim 3, characterized in that: The lower tooth type clutch (3) and the upper tooth type clutch (4) engage through the teeth on the two end faces.

5. A tooth clutch separation and avoidance mechanism according to claim 1 or 4, characterized in that: One end of the spring (9) is coaxially inserted into the inner hole of the lower tooth clutch body, and the end of the spring (9) abuts against the upper surface of the lower tooth clutch end plate. The other end of the spring (9) is coaxially inserted into the inner hole of the upper tooth clutch body, and the end of the spring (9) abuts against the lower surface of the upper tooth clutch end plate.

6. The tooth clutch separation and avoidance mechanism according to claim 5, characterized in that: The inner side of the upper tooth clutch (4) is uniformly provided with multiple upper tooth clutch splines along the circumferential direction. The side of the end of the drive shaft (1) is machined with multiple upper tooth clutch spline grooves that match the multiple upper tooth clutch splines. The upper tooth clutch (4) and the drive shaft (1) are connected by splines. The end of the drive shaft (1) is machined with external threads. The lock nut is threadedly connected to the end of the drive shaft (1).

7. A tooth clutch separation and avoidance mechanism according to claim 6, characterized in that: The bottom side of the lower tooth clutch (3) is evenly provided with multiple lower tooth clutch splines along the circumferential direction. The bottom end face of the external connecting cylinder (5) is provided with multiple lower tooth clutch spline grooves that match the multiple lower tooth clutch splines. The lower tooth clutch (3) and the external connecting cylinder (5) are connected by splines.

8. The tooth clutch separation and avoidance mechanism according to claim 7, characterized in that: The outer connecting cylinder (5) has a radially machined threaded hole (5-2) for connecting the outer connecting cylinder, and the lower tooth clutch (3) has a threaded hole for connecting the lower tooth clutch that matches the threaded hole (5-2) for connecting the outer connecting cylinder. The outer connecting cylinder (5) and the lower tooth clutch (3) are connected by screws.

9. A tooth clutch separation and avoidance mechanism according to claim 1 or 8, characterized in that: The top of the external connecting cylinder (5) is provided with two side ear plates arranged side by side, and the front end of the folding connecting rod (6) is provided with a middle ear plate. The side ear plates and the middle ear plates are machined with matching connecting pin holes. The side ear plates at the top of the external connecting cylinder (5) are rotatably connected to the middle ear plate at the front end of the folding connecting rod (6) by means of a pin.

10. A tooth clutch separation and avoidance mechanism according to claim 9, characterized in that: Locking pin holes are machined radially on both sides of the pin shaft, and cotter pins are inserted into the locking pin holes at both ends of the pin shaft.

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