Bidirectional pneumatic clutch

Abstract

The utility model discloses a bidirectional pneumatic clutch, which belongs to the field of clutches and comprises a hollow through shaft tube connected with a power shaft through a flat key, a flange fluted disc mounted at one end of the hollow through shaft tube, a driving fluted disc mounted on the outer wall of the hollow through shaft tube through a spline and axially moving along the hollow through shaft tube, and a bidirectional driving mechanism. A reset spring which extends out of the driving fluted disc and makes contact with the side wall of the flange fluted disc all the time is inserted into the driving fluted disc. According to the clutch, through the arrangement of the two driving pieces of the first air cylinder body and the second air cylinder body and the double-pressure-source structure, the working occasions needing high combination and separation use frequency and rapid action are better met, pressure sources are used for traction and separation in the separation process, the separation action is rapid and flexible, even if a reset spring fails, separation can be thorough, and the working efficiency is improved. And the conditions of tooth breakage and bumping caused by incomplete separation of the end face teeth are avoided, and an excellent failure protection effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the clutch technical field, specifically a kind of bidirectional pneumatic clutch. BACKGROUND

[0002] Clutch is located in the flywheel housing between engine and gearbox, clutch assembly is fixed on the rear plane of flywheel with screw, the output shaft of clutch is the input shaft of gearbox.In the process of driving, driver can step on or release clutch pedal according to need, make engine and gearbox temporarily separate and gradually engage, to cut off or transmit the power inputted from engine to gearbox.Clutch is a commonly used component in mechanical transmission, which can separate or engage transmission system at any time.The basic requirements are: smooth engagement, rapid and complete separation;Convenient adjustment and repair;Small external dimensions;Small mass;Good wear resistance and sufficient heat dissipation capacity;Convenient and labor-saving operation, commonly divided into gear meshing type and friction type.

[0003] Now the gear type clutch used in industrial transmission field in market, its principle is that after clutch is installed on equipment, power shaft is installed into hollow through shaft pipe, flange plate is fixed on fixed plate, at this time clutch is in disconnected state, driving end carries hollow through shaft pipe and driving gear disc to rotate;When pressure source is inputted from inlet, piston is pushed, driving gear disc and teeth on flange gear disc end surface start to mesh, realize the function of braking;When the pressure of pressure source is disconnected, separation spring pushes driving gear disc to move rightwards along axial direction, clutch is disconnected, realizes the function of separation, driving end rotates again.But, after long-term work of this kind of clutch, reset spring is prone to permanent deformation or fracture phenomenon, once reset spring fails, end surface teeth are not separated completely, which will lead to breakage and bruise in high-speed impact of end surface teeth.

[0004] Therefore, the present application provides a bidirectional pneumatic clutch to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a bidirectional pneumatic clutch, which aims to solve the problems of permanent deformation or fracture of reset spring after long-term work of existing clutch, incomplete separation of end surface teeth after reset spring fails, and breakage and bruise in high-speed impact of end surface teeth.

[0006] To achieve the above object, the application provides the following technical scheme: a bidirectional pneumatic clutch, comprising a hollow through shaft pipe, a flange gear plate rotatably installed at one end of the hollow through shaft pipe, a driving gear plate movably installed on the outer wall of the hollow through shaft pipe and moving along the axial direction of the hollow through shaft pipe, two end face gears fixedly installed on the opposite surfaces of the flange gear plate and the driving gear plate respectively, and a bidirectional driving mechanism installed on the outer wall of the hollow through shaft pipe and used for controlling the movement of the driving gear plate on the hollow through shaft pipe, wherein the driving gear plate is inserted with a reset spring having two ends fixedly connected with the hollow through shaft pipe and the driving gear plate respectively.

[0007] The bidirectional driving mechanism comprises a cylinder body one and a cylinder body two rotatably installed outside the hollow through shaft pipe, and a piston installed in the cylinder body one and the cylinder body two and connected with the driving gear plate and used for pushing the driving gear plate to move close to or away from the flange gear plate, wherein the cylinder body one is provided with a pressure source inlet one used for introducing pressure to make the piston drive the driving gear plate to move away from the flange gear plate, the cylinder body two is provided with a pressure source inlet two used for introducing pressure to make the piston drive the driving gear plate to move close to the flange gear plate, a pressure source guide hole one is arranged between the pressure source inlet one and one side end surface of the piston and connected with each other, and a pressure source guide hole two is arranged between the pressure source inlet two and the other side end surface of the piston and connected with each other, so that, by arranging the two driving members of the cylinder body one and the cylinder body two, when no pressure source is introduced into the pressure source inlet one and the pressure source inlet two, the driving gear plate can move away from the flange gear plate by the support of the elastic force of the two ends of the reset spring due to the sliding connection between the driving gear plate and the hollow through shaft pipe, so that the two end face gears are not in contact, and the clutch is in a separated state, when the pressure source inlet one is not introduced with the pressure source and only the pressure source inlet two is introduced with the pressure source, the pressure source enters the piston through the pressure source guide hole two, the piston drives the driving gear plate to move leftward on the hollow through shaft pipe through the precise bearing one, the end face gears on the flange gear plate are engaged, and the clutch is combined, when the pressure source inlet two stops inputting and only the pressure source inlet one is introduced with the pressure source, the piston drives the driving gear plate to move rightward on the hollow through shaft pipe, and the clutch is separated, the double pressure source structure is arranged, the working occasion requiring high combination and separation frequency and quick action is better satisfied, the separation is driven by the pressure source, the separation action is quick and flexible, the reset spring only plays an auxiliary role, the reset spring is not easy to be damaged, broken and failed, has a long service life, and is free of maintenance, even if the reset spring is failed, the separation is complete, the end face gears are not broken and hurt due to incomplete separation, and an excellent failure protection effect is achieved.

[0008] Preferably, in order to connect the driving gear plate, the output end of the piston is fixedly connected with the driving gear plate through the precise bearing one, and the cylinder body two is fixedly connected with the outer wall of the hollow through shaft pipe through the precise bearing two, so that the piston drives the driving gear plate to rotate and move through the precise bearing one, and the cylinder body two is rotatably connected between the precise bearing two and the hollow through shaft pipe, and rotation is facilitated.

[0009] Preferably, in order to ensure the use of the piston, a sealing ring one is radially installed between the piston and the cylinder block one, and a sealing ring two is radially installed between the piston and the cylinder block two, the piston and the cylinder block one and the cylinder block two are sealed by the sealing ring one and the sealing ring two, and the stable work of the piston is ensured.

[0010] Preferably, in order to fix the cylinder block one and the cylinder block two, the cylinder block one and the cylinder block two are fixedly connected by the internal hexagon screw, the outer wall of the cylinder block two is provided with a stop hole, the cylinder block one and the cylinder block two are tightly fixed by the internal hexagon screw, and the cylinder block two is fixed with external equipment through the stop hole, so that the cylinder block two and the cylinder block one are always in a fixed state, and the stable work of the equipment is ensured.

[0011] Preferably, in order to normally rotate the flange gear disc, the inner wall of the flange gear disc and the outer wall of the hollow through shaft pipe are fixedly connected by at least two groups of closely fitted precision bearings three, so that the flange gear disc is synchronously rotated with the driving gear disc.

[0012] Preferably, in order to install the flange gear disc, an end face of the flange gear disc, which is away from the end face gear, is provided with a stop opening, a plurality of uniformly distributed threaded holes are circumferentially arranged outside the stop opening, and the output end of the butt joint transmission member is connected and fixed with a threaded screw through the threaded hole after the butt joint, so that the braking is realized.

[0013] The clutch, by setting two driving members of the cylinder block one and the cylinder block two, is provided with a double pressure source structure, better meets the working occasions which require high frequency of combination and separation and quick action, is pulled off by the pressure source when separated, has quick and flexible separation action, can be completely separated even if the return spring fails, and cannot cause the tooth breaking and bruising of the end face gear due to incomplete separation, and has an excellent failure protection effect.

[0014] The clutch, since the combination and separation of the driving gear disc and the flange gear disc are mainly realized by the bidirectional driving mechanism, the return spring only plays an auxiliary role, the return spring is not easy to be damaged, broken and failed, has a long service life, and is maintenance-free. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of a bidirectional pneumatic clutch.

[0016] Figure 2 It is Figure 1 It is an enlarged schematic view of A in the middle.

[0017] In the figure:

[0018] 1. Hollow through-shaft tube; 2. Flange gear plate; 3. Drive gear plate; 4. End face teeth; 5. Bidirectional drive mechanism; 51. Cylinder body one; 52. Cylinder body two; 53. Piston; 54. Pressure source inlet one; 55. Pressure source inlet two; 56. Pressure source inlet hole one; 57. Pressure source inlet hole two; 58. Precision bearing one; 59. Precision bearing two; 510. Sealing ring one; 511. Sealing ring two; 512. Socket head cap screw; 513. Stop hole; 6. Return spring; 7. Precision bearing three; 8. Stop; 9. Threaded hole. Detailed Implementation

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

[0020] Example 1

[0021] This embodiment provides a bidirectional pneumatic clutch, such as Figures 1-2 As shown, the device includes a hollow through-shaft tube 1, a flange gear 2 rotatably mounted at one end of the hollow through-shaft tube 1, a drive gear 3 movably mounted on the outer wall of the hollow through-shaft tube 1 and moving axially along the hollow through-shaft tube 1, two end face teeth 4 respectively fixedly mounted on the opposite surfaces of the flange gear 2 and the drive gear 3, and a bidirectional drive mechanism 5 mounted on the outer wall of the hollow through-shaft tube 1 for controlling the movement of the drive gear 3 on the hollow through-shaft tube 1. A return spring 6 is inserted inside the drive gear 3, with both ends fixedly connected to the hollow through-shaft tube 1 and the drive gear 3 respectively.

[0022] The bidirectional drive mechanism 5 includes a cylinder body 51 and a cylinder body 52 rotatably mounted outside the hollow through-shaft tube 1, and a piston 53 installed inside the cylinder body 51 and the cylinder body 52 and connected to the drive gear 3 for pushing the drive gear 3 closer to or away from the flange gear 2. The cylinder body 51 is provided with a pressure source inlet 54 for introducing pressure to drive the piston 53 to drive the drive gear 3 away from the flange gear 2. The cylinder body 52 is provided with a pressure source inlet 55 for introducing pressure to drive the piston 53 to drive the drive gear 3 closer to the flange gear 2. A pressure source inlet hole 56 is provided between the pressure source inlet 54 and one end face of the piston 53, and a pressure source inlet hole 57 is provided between the pressure source inlet 55 and the other end face of the piston 53.

[0023] In use, by setting the two driving members of the cylinder body one 51 and the cylinder body two 52, when the pressure source inlet one 54 and the pressure source inlet two 55 are not connected to the pressure source, since the driving tooth disc 3 is connected between the hollow through shaft pipe 1, the elastic support of the reset spring 6 at both ends can make the driving tooth disc 3 away from the flange tooth disc 2, so that the two end face teeth 4 are not in contact, so that the clutch is in a separated state, when the pressure source inlet one 54 is not connected to the pressure source, only the pressure source inlet two 55 is connected to the pressure source, the pressure source enters the push piston 53 through the pressure source inlet hole two 57, the piston 53 pushes the driving tooth disc 3 to move axially on the hollow through shaft pipe 1 to the left, and engages with the end face teeth 4 on the flange tooth disc 2, so that the clutch is combined, when the pressure source inlet two 55 stops input, only the pressure source inlet one 54 is connected to the pressure source, the piston 53 pulls the driving tooth disc 3 to move axially on the hollow through shaft pipe 1 to the right, so that the clutch is separated, the double pressure source structure is set, which better meets the working conditions that require high frequency of combination and separation, quick action, and the like, the separation is pulled by the pressure source, the separation action is quick and flexible, the reset spring 6 only plays an auxiliary role, the reset spring 6 is not easy to be damaged, broken and failed, has a long service life, and is maintenance-free, even if the reset spring 6 fails, the separation can be completely, and the end face teeth 4 will not be broken and scratched due to incomplete separation, which plays an excellent failure protection role.

[0024] Wherein, the output end of the piston 53 is fixedly connected with the driving tooth disc 3 through the precise bearing one 58, and the cylinder body two 52 is fixedly connected with the outer wall of the hollow through shaft pipe 1 through the precise bearing two 59. In use, the piston 53 drives the driving tooth disc 3 to rotate and move through the precise bearing one 58, and the cylinder body two 52 is rotatably connected with the hollow through shaft pipe 1 through the precise bearing two 59, facilitating rotation.

[0025] Specifically, the sealing ring one 510 is radially arranged between the piston 53 and the cylinder body one 51, and the sealing ring two 511 is radially arranged between the piston 53 and the cylinder body two 52. In use, the piston 53, the cylinder body one 51 and the cylinder body two 52 are sealed by the sealing ring one 510 and the sealing ring two 511, to ensure stable work of the piston 53.

[0026] More specifically, the cylinder body one 51 and the cylinder body two 52 are fixedly connected through the inner hexagonal screw 512, and the outer wall of the cylinder body two 52 is provided with the stop hole 513. In use, the cylinder body one 51 and the cylinder body two 52 are tightly fixed by the inner hexagonal screw 512, and the cylinder body two 52 is fixed with external equipment through the stop hole 513, to ensure that the cylinder body one 51 is always in a fixed state with the cylinder body two 52, and to ensure stable work of the equipment without deviation.

[0027] Further, the inner wall of the flange gear plate 2 and the outer wall of the hollow through shaft tube 1 are fixedly connected through at least two groups of closely fitted precision bearings three 7. In use, the precision bearings three 7 are sleeved on the outer wall of the hollow through shaft tube 1, and then the flange gear plate 2 is sleeved on the precision bearings three 7. When the driving gear plate 3 rotates, the flange gear plate 2 engaged with the driving gear plate 3 through the end face teeth 4 rotates on the hollow through shaft tube 1 through the precision bearings three 7.

[0028] Further, a stop opening 8 is formed on an end face of the flange gear plate 2 away from the end face teeth 4, and a plurality of uniformly distributed threaded holes 9 are formed on the flange gear plate 2 outside the outer ring of the stop opening 8. In use, after the output end of the transmission member is butted against the stop opening 8, a fixing screw is connected and fixed through the threaded holes 9, so as to be fixed with the external output end, thereby achieving braking.

[0029] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical solution and concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A bidirectional pneumatic clutch, comprising a hollow through shaft tube (1), a flange gear plate (2) rotatably mounted at one end of the hollow through shaft tube (1), a driving gear plate (3) movably mounted on the outer wall of the hollow through shaft tube (1) and moving along the axial direction of the hollow through shaft tube (1), two end face gears (4) fixedly mounted on the opposite surfaces of the flange gear plate (2) and the driving gear plate (3) respectively, and a bidirectional driving mechanism (5) mounted on the outer wall of the hollow through shaft tube (1) for controlling the movement of the driving gear plate (3) on the hollow through shaft tube (1), wherein a reset spring (6) is inserted into the driving gear plate (3) and fixedly connected with the hollow through shaft tube (1) and the driving gear plate (3) at both ends, characterized in that: the bidirectional driving mechanism (5) comprises a cylinder body one (51) and a cylinder body two (52) rotatably mounted on the outside of the hollow through shaft tube (1), and a piston (53) mounted in the cylinder body one (51) and the cylinder body two (52) and connected with the driving gear plate (3) for pushing the driving gear plate (3) to move close to or away from the flange gear plate (2), a pressure source inlet one (54) is arranged on the cylinder body one (51) for introducing pressure to drive the piston (53) to move the driving gear plate (3) away from the flange gear plate (2), a pressure source inlet two (55) is arranged on the cylinder body two (52) for introducing pressure to drive the piston (53) to move the driving gear plate (3) close to the flange gear plate (2), a pressure source guide hole one (56) is arranged between the pressure source inlet one (54) and one side end face of the piston (53) for communication, and a pressure source guide hole two (57) is arranged between the pressure source inlet two (55) and the other side end face of the piston (53) for communication. The output end of the piston (53) is fixedly connected with the driving gear plate (3) through a precision bearing one (58), and the cylinder body two (52) is fixedly connected with the outer wall of the hollow through shaft tube (1) through a precision bearing two (59).

2. A bidirectional pneumatic clutch according to claim 1, characterized in that: A sealing ring one (510) is radially mounted between the piston (53) and the cylinder body one (51), and a sealing ring two (511) is radially mounted between the piston (53) and the cylinder body two (52).

3. A bidirectional pneumatic clutch according to claim 1, characterized in that: The cylinder body one (51) and the cylinder body two (52) are fixedly connected through an internal hexagonal screw (512), and a stop hole (513) is formed on the outer wall of the cylinder body two (52).

4. A bidirectional pneumatic clutch according to claim 1, characterized in that: The inner wall of the flange gear plate (2) and the outer wall of the hollow through shaft tube (1) are fixedly connected through at least two groups of closely fitted precision bearing three (7).

5. A bidirectional pneumatic clutch as claimed in claim 1, wherein: A stop opening (8) is formed on one end of the flange gear plate (2) away from the end face gear (4), and a plurality of thread holes (9) are circumferentially formed on the flange gear plate (2) outside the stop opening (8).

6. A bidirectional pneumatic clutch as claimed in claim 1, wherein: ​

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