Claw disc type pulling-free device

Abstract

The utility model relates to the technical field of diesel engine starting, and discloses a claw disc type pulling-free device which comprises an input gear shaft, a plurality of bearings, a shell and a ratchet wheel, the bearings are arranged on the surface of the input gear shaft in a sleeved mode, and the bearings are evenly distributed on the surfaces of a plurality of connecting pieces. The input gear shaft is rotationally connected with an inner cavity of the shell through a bearing, a sector space is formed in an inner cavity of the ratchet wheel and makes contact with the surface of the input gear shaft, the ratchet wheel and the input gear shaft are fixedly installed through a snap spring flat gasket, a pin is connected to the inner cavity of the input gear shaft in an inserted mode, and the pin is located in the sector space of the ratchet wheel. The pulling-free device solves the problem that in the using process of the pulling-free device, the pulling-free device and a starting cup of the diesel engine are prone to slipping off, so that a user cannot stably drive the diesel engine to start through the pulling-free device, and the using effect of the pulling-free device is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engine starting, in particular to a claw-disc type pull-free device. Background Art

[0002] The no-pull starter for diesel engines is an auxiliary starting device that replaces the traditional manual pull-rope starting method, reducing starting labor and improving starting efficiency and safety. In cold weather or when the diesel engine has not been used for an extended period, the no-pull starter effectively helps start the engine, preventing damage caused by improper manual starting.

[0003] The no-pull device for diesel engine starting is an auxiliary starting device that generates power through a built-in scroll spring, replacing the traditional manual pull-rope starting method. Its main function is to simplify the starting process, reduce the labor intensity during starting, and improve starting efficiency and success rate. In low temperature environments or when the diesel engine has difficulty starting, the no-pull device can provide a stable starting force to ensure a smooth start of the engine. The problem with the above technology is that during the use of the no-pull device, there is a problem that the no-pull device and the diesel engine's starting cup are prone to slipping and disconnecting. As a result, the user cannot stably start the diesel engine through the no-pull device, thereby reducing the effectiveness of the no-pull device. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a claw-disc type pull-free device which can overcome the above problems or at least partially solve the above problems.

[0005] The utility model is implemented as follows: a claw-disc type pull-free device includes an input gear shaft, a bearing, a housing, and a ratchet. The surface of the input gear shaft is sleeved with a bearing, and the number of the bearings is multiple and evenly distributed on the surfaces of multiple connecting parts. The input gear shaft is rotatably connected to the inner cavity of the housing through the bearing. The inner cavity of the ratchet is provided with a fan-shaped space and contacts the surface of the input gear shaft. The ratchet is fixed to the input gear shaft through a retaining ring flat washer. The inner cavity of the input gear shaft is plug-connected with a pin, and the pin is located inside the fan-shaped space of the ratchet; the front side of the housing is provided with a claw-disc mechanism used in conjunction with a diesel engine; the rear side of the claw-disc mechanism is provided with a connecting mechanism used in conjunction with the claw-disc mechanism; the inner cavity of the housing is provided with an energy storage mechanism used in conjunction with the claw-disc mechanism; the rear side of the housing is provided with a release mechanism used in conjunction with the claw-disc mechanism.

[0006] In order to improve the docking effect between the pull-free device and the diesel engine, preferably, the claw plate mechanism includes a grab plate gasket, a starting claw, an upper cover plate and a lower cover plate, and the rear side of the upper cover plate and the front side of the lower cover plate are fixedly installed by rivets. The number of the starting claws is multiple and is distributed in a ring at the opposite ends of the upper cover plate and the lower cover plate. The claw plate gasket is located on the rear side of the starting claw and is fixedly installed with the rear side of the starting claw. The inner cavity of the starting claw is rotatably connected to the surface of the rivet on the front side of the lower cover plate. By setting up the claw plate mechanism, the multiple starting claws can cooperate with the starting cup to achieve the effect of quick docking and locking with the starting port of the diesel engine, thereby achieving the effect of quickly starting the diesel engine through the energy storage mechanism.

[0007] In order to improve the use effect of the claw plate mechanism, preferably, the connecting mechanism includes a claw plate pressure cap, a wave washer, a friction plate and a claw plate outer cover, and the wave washer and the friction plate are fixedly installed on the rear side of the claw plate outer cover through the claw plate pressure cap, and the groove of the claw plate outer cover is fit-connected with the extended end of the starting claw. By setting the connecting mechanism, the claw plate pressure cap can generate pressure on the wave washer, thereby achieving the effect of making the wave washer generate elastic force toward the front side and generating a certain resistance through mutual cooperation with the friction plate, so as to achieve the function of controlling the extension and retraction of the starting claw through the formed resistance, avoiding the situation where the starting claw cannot be quickly controlled for extension and retraction.

[0008] In order to improve the resetting effect of the claw disk mechanism, preferably, the energy storage mechanism includes a coil spring box, a coil spring cover plate, an output shaft and a spiral spring, the spiral spring is located in the inner cavity of the coil spring box and is fixedly installed in the inner cavity of the coil spring box, the coil spring cover plate is located on the front side of the coil spring box and is installed in fit with the front side of the coil spring box, the front side of the coil spring cover plate is connected to the rear side of the claw disk pressure cover by interference fit, the inner cavity of the output shaft is plugged into and connected to the inner end of the spiral spring, the front and rear sides of the output shaft surface are respectively rotatably connected to the coil spring cover plate and the coil spring box through bearings, and the square end of the front side of the output shaft is plugged into and fit with the square hole in the inner cavity of the starting claw. By setting up an energy storage mechanism, the energy storage mechanism provides power for starting the diesel engine. After starting the diesel engine, the excess elastic force will generate inertia on the starting claw, causing the starting claw to retract, thereby further improving the use effect of the pull-free device.

[0009] In order to improve the release effect of the energy storage mechanism, preferably, the release mechanism includes a transmission gear, a pawl and a return torsion spring, the front side of the transmission gear is fixedly installed with the rear side of the output shaft through a clamp, the rear side of the transmission gear is meshed with the front side of the input gear shaft, the pawl is located at the tooth root of the ratchet wheel, the rear side of the return torsion spring is fixedly installed with the pawl, and the fixed end of the front side of the return torsion spring is fixedly installed with the rear side of the shell. By setting the release mechanism, the transmission gear can achieve the effect of function transmission through mutual cooperation with the input gear shaft, so as to achieve the effect of quickly driving the claw disk mechanism for use through the output shaft, and through the mutual cooperation between the pawl and the return torsion spring, the effect of maintaining the tightening and stored force of the spiral spring can be achieved. After the pawl is disengaged from the docking with the ratchet wheel, the tightening and stored force of the spiral spring can be quickly released, and the pawl can be reset by the pawl return spring.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] The utility model starts the input gear shaft by arranging an input gear shaft, a bearing, a housing, a ratchet, a pin, a pawl plate mechanism, a connecting mechanism, an energy storage mechanism and a release mechanism. The input gear shaft drives the transmission gear to rotate through its own gear end, and the input gear shaft drives the pin to rotate along with it during the rotation. The pin is located in the fan-shaped space of the ratchet. When the pin swings inside the fan-shaped space, it will achieve the effect of rotating a certain angle after being tightened. During the rotation of the transmission gear, it will cooperate with the output shaft to control the extension of multiple starting pawls, and during the rotation of the output end, it will cooperate with the volute spring to drive the volute spring to tighten. At this time, one side of the pawl rests on the tooth root of the ratchet, so that the volute spring is kept in a tightened state. During the extension process, the starting pawl will rotate around the connection end with the rivet, and will pass through the rivet during the rotation. The square hole inner cavity of the starting cup fits tightly with the starting port of the diesel engine, so as to achieve the effect of stable docking of the pull-free device with the starting port of the diesel engine. After the docking is completed, the other side of the pawl is pressed to disengage the pawl from the ratchet. At this time, the torsion of the return torsion spring rotates, thereby achieving the effect of driving the pawl to quickly reset. When the pawl thrust is docked with the ratchet, the tightening torque of the spiral spring will be quickly released, thereby achieving the effect of driving the output shaft to rotate in the opposite direction. During the rotation, the output shaft will be subjected to downward force and upward elastic force on the wave washer through the interference fit of the pawl plate pressure cap and the coil spring cover plate, so that the wave washer and the friction plate can generate a certain resistance. This resistance can control the extension and retraction function of the starting pawl, and through the mutual cooperation with the reverse rotation of the output shaft, the starting pawl can be quickly retracted, and the output force of the reverse rotation and the mutual cooperation of the starting cup can achieve the effect of stable starting of the diesel engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure provided by an embodiment of the utility model;

[0013] Figure 2 This is a front view assembly and decomposition diagram of the pull-free device provided by an embodiment of the utility model;

[0014] Figure 3 This is a rear view assembly exploded diagram of the pull-free device provided by an embodiment of the utility model.

[0015] In the figure: 1. Input gear shaft; 2. Bearing; 3. Housing; 4. Ratchet; 5. Pin; 6. Claw plate mechanism; 7. Connecting mechanism; 8. Energy storage mechanism; 9. Release mechanism; 601. Claw plate gasket; 602. Starting claw; 603. Upper cover; 604. Lower cover; 701. Claw plate pressure cap; 702. Wave washer; 703. Friction plate; 704. Claw plate outer cover; 801. Coil spring box; 802. Coil spring cover; 803. Output shaft; 804. Volute spring; 901. Transmission gear; 902. Ratchet; 903. Return torsion spring. DETAILED DESCRIPTION

[0016] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0017] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0018] like Figures 1 to 3As shown, a claw-disc type pull-free device provided by an embodiment of the present invention includes an input gear shaft 1, a bearing 2, a housing 3, and a ratchet 4. The surface of the input gear shaft 1 is sleeved with a bearing 2. The number of bearings 2 is multiple and evenly distributed on the surfaces of multiple connecting parts. The input gear shaft 1 is rotatably connected to the inner cavity of the housing 3 through the bearing 2. The inner cavity of the ratchet 4 is provided with a fan-shaped space and contacts the surface of the input gear shaft 1. The ratchet 4 is fixed to the input gear shaft 1 through a retaining ring flat washer. The inner cavity of the input gear shaft 1 is plugged and connected with a pin 5. The pin 5 is located in the fan-shaped space of the ratchet 4. inside the room; the front side of the shell 3 is provided with a claw disk mechanism 6 used in conjunction with the diesel engine; the rear side of the claw disk mechanism 6 is provided with a connecting mechanism 7 used in conjunction with the claw disk mechanism 6; the inner cavity of the shell 3 is provided with an energy storage mechanism 8 used in conjunction with the claw disk mechanism 6; the rear side of the shell 3 is provided with a release mechanism 9 used in conjunction with the claw disk mechanism 6. By setting the ratchet 4, when the input gear shaft 1 is tightened, the pin 5 abuts against one side of the sector, driving the ratchet 4 to rotate. When the tightening action is completed, the input gear shaft 1 rotates in the opposite direction to the angle of the sector inner cavity, and the pin 5 abuts against the other side of the sector. The cam 602 is pressed against the starter cap 604 and the starter cap 602 is pressed against the starter cap 604. The wiper 703 and the claw plate outer cover 704, the wave washer 702 and the friction plate 703 are fixedly installed on the rear side of the claw plate outer cover 704 through the claw plate pressure cap 701. The groove of the claw plate outer cover 704 is fitted and connected with the extended end of the starting claw 602. By setting the connecting mechanism 7, the claw plate pressure cap 701 can generate pressure on the wave washer 702, thereby achieving the elastic force of the wave washer 702 to the forward side and generating a certain degree of friction through the mutual cooperation with the friction plate 703. Resistance, thereby achieving the extension and retraction function of the starting claw 602 through the resistance formed, avoiding the situation where the starting claw 602 cannot be quickly controlled to be extended and retracted, the energy storage mechanism 8 includes a coil spring box 801, a coil spring cover 802, an output shaft 803 and a spiral spring 804, the spiral spring 804 is located in the inner cavity of the coil spring box 801 and is fixedly installed with the inner cavity of the coil spring box 801, the coil spring cover 802 is located at the front side of the coil spring box 801 and is installed in contact with the front side of the coil spring box 801,The front side of the coil spring cover 802 is connected to the rear side of the claw plate pressure cover 701 by an interference fit, and the inner cavity of the output shaft 803 is plugged into the inner end of the spiral spring 804. The front and rear sides of the output shaft 803 surface are rotatably connected to the coil spring cover 802 and the coil spring box 801 through bearings 2 respectively. The square end of the front side of the output shaft 803 is plugged into the square hole in the inner cavity of the starting claw 602. By setting up an energy storage mechanism 8, the energy storage mechanism 8 provides power for starting the diesel engine. After starting the diesel engine, the excess elastic force will generate inertia on the starting claw 602, causing the starting claw 602 to retract, thereby further improving the use effect of the pull-free device. The release mechanism 9 includes a transmission gear 901, a ratchet 902 and a return torsion spring 903. The front side of the transmission gear 901 is fixedly installed with the rear side of the output shaft 803 through a clamp. The rear side of the transmission gear 901 The side is meshed with the front side of the input gear shaft 1, the pawl 902 is located at the root of the ratchet wheel 4, the rear side of the return torsion spring 903 is fixed to the pawl 902, and the fixed end of the front side of the return torsion spring 903 is fixed to the rear side of the housing 3. By setting the release mechanism 9, the transmission gear 901 can achieve the effect of function transmission through the mutual cooperation with the input gear shaft 1, so as to achieve the effect of quickly driving the claw disk mechanism 6 for use through the output shaft 803, and through the mutual cooperation between the pawl 902 and the return torsion spring 903, it can also achieve the effect of maintaining the tightening and storing force of the spiral spring 804. After the pawl 902 is separated from the docking with the ratchet wheel 4, the tightening and storing force of the spiral spring 804 can be quickly released, and the pawl 902 can be reset by the pawl 902 return spring.

[0019] The working principle of this utility model:

[0020] When in use, start the input gear shaft 1, the input gear shaft 1 will drive the transmission gear 901 to rotate through its own gear end, and the input gear shaft 1 will drive the pin 5 to rotate along with it during the rotation. The pin 5 is located in the fan-shaped space of the ratchet 4. After the pin 5 swings inside the fan-shaped space, it will achieve the effect of rotating a certain angle after being tightened. During the rotation of the transmission gear 901, it will cooperate with the output shaft 803 to control the extension of multiple starting claws 602, and during the rotation of the output end, it will cooperate with the volute spring 804 to drive the volute spring 804 to tighten. At this time, one side of the pawl 902 rests on the tooth root of the ratchet 4, so that the volute spring 804 remains in a tightened state. During the extension process, the starting claw 602 will rotate around the connection end with the rivet, and during the rotation process, it will pass through the square hole cavity of the starting cup and fit tightly with the starting port of the diesel engine, thereby achieving When the pawl 902 is pushed and the ratchet 4 is docked, the tightening torque of the spiral spring 804 is quickly released, thereby driving the output shaft 803 to rotate in the opposite direction. During the rotation of the output shaft 803, the interference fit between the claw plate pressure cap 701 and the coil spring cover 802 is achieved, which applies downward force to the wave washer 702 and provides an upward elastic force, thereby generating a certain resistance between the wave washer 702 and the friction plate 703. This resistance can control the extension and retraction function of the starting pawl 602, and through the mutual cooperation with the reverse rotation of the output shaft 803, the starting pawl 602 can be quickly retracted, and the effect of stably starting the diesel engine can be achieved through the output force of the reverse rotation and the mutual cooperation of the starting cup.

[0021] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0022] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent will not depart from the scope of the technical solution of the present invention.

Claims

1. A claw-disc type pull-free device, comprising an input gear shaft (1), a bearing (2), a housing (3), and a ratchet (4), characterized in that: The surface of the input gear shaft (1) is sleeved with a bearing (2), and the number of the bearings (2) is multiple and evenly distributed on the surfaces of multiple connecting parts. The input gear shaft (1) is rotatably connected to the inner cavity of the housing (3) through the bearing (2). The inner cavity of the ratchet (4) is provided with a fan-shaped space and contacts the surface of the input gear shaft (1). The ratchet (4) is fixedly installed with the input gear shaft (1) through a retaining spring flat washer. The inner cavity of the input gear shaft (1) is plugged with a pin (5), and the pin (5) is located inside the fan-shaped space of the ratchet (4). The front side of the housing (3) is provided with a claw disc mechanism (6) for use with the diesel engine; A connecting mechanism (7) for use with the claw disc mechanism (6) is provided on the rear side of the claw disc mechanism (6); The inner cavity of the housing (3) is provided with an energy storage mechanism (8) used in conjunction with the claw disc mechanism (6); A release mechanism (9) is provided on the rear side of the housing (3) and is used in conjunction with the claw disc mechanism (6).

2. The claw-disc type pull-free device according to claim 1, characterized in that: The claw plate mechanism (6) comprises a claw plate gasket (601), a starting claw (602), an upper cover plate (603) and a lower cover plate (604); the rear side of the upper cover plate (603) and the front side of the lower cover plate (604) are fixedly mounted by rivets; the starting claws (602) are in plurality and are distributed in a ring at the opposite ends of the upper cover plate (603) and the lower cover plate (604); the claw plate gasket (601) is located at the rear side of the starting claw (602) and is fixedly mounted to the rear side of the starting claw (602); the inner cavity of the starting claw (602) is rotatably connected to the surface of the rivet on the front side of the lower cover plate (604).

3. The claw-disc type pull-free device according to claim 2, characterized in that: The connecting mechanism (7) comprises a claw disc pressure cap (701), a wave washer (702), a friction plate (703) and a claw disc outer cover (704); the wave washer (702) and the friction plate (703) are fixedly mounted on the rear side of the claw disc outer cover (704) via the claw disc pressure cap (701); the groove of the claw disc outer cover (704) is fitted and connected to the extended end of the starting claw (602).

4. The claw-disc type pull-free device according to claim 2, characterized in that: The energy storage mechanism (8) comprises a coil spring box (801), a coil spring cover plate (802), an output shaft (803) and a spiral spring (804); the spiral spring (804) is located in the inner cavity of the coil spring box (801) and is fixedly installed with the inner cavity of the coil spring box (801); the coil spring cover plate (802) is located at the front side of the coil spring box (801) and is installed in contact with the front side of the coil spring box (801); the coil spring cover plate (802) The front side is connected to the rear side of the claw plate pressure cap (701) through interference fit, the inner cavity of the output shaft (803) is plug-connected to the inner end of the spiral spring (804), the front side and the rear side of the output shaft (803) surface are rotatably connected to the coil spring cover (802) and the coil spring box (801) through bearings (2), and the square end of the front side of the output shaft (803) is plug-fitted to the square hole in the inner cavity of the starting claw (602).

5. The claw-disc type pull-free device according to claim 1, characterized in that: The release mechanism (9) comprises a transmission gear (901), a ratchet (902) and a return torsion spring (903); the front side of the transmission gear (901) is fixedly mounted to the rear side of the output shaft (803) via a clamp; the rear side of the transmission gear (901) is meshedly connected to the front side of the input gear shaft (1); the ratchet (902) is located against the tooth root of the ratchet (4); the rear side of the return torsion spring (903) is fixedly mounted to the ratchet (902); and the fixed end of the front side of the return torsion spring (903) is fixedly mounted to the rear side of the housing (3).

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