Friction plate type pulling-free device

Abstract

The utility model relates to the technical field of diesel engine starting, and discloses a friction plate type pulling-free device which comprises a ratchet wheel, a flat gasket, a bearing, an input gear shaft and a shell, the flat gasket is located on the front side of the ratchet wheel, and the bearing is located on the front side of the flat gasket. The surface of the rear side of the input gear shaft is connected with inner cavities of a bearing, a flat gasket and a ratchet wheel in a sleeved mode, and an inner cavity of the shell is rotationally connected with the surface of the input gear shaft. A claw disc friction mechanism used in cooperation with a diesel engine is arranged on the front side of the shell. An energy storage mechanism used in cooperation with the claw disc friction mechanism is arranged on the rear side of the claw disc friction mechanism. The friction plate type pulling-free device solves the problems that in the process of auxiliary starting of a diesel engine through a friction plate type pulling-free device, the friction effect is low, the diesel engine cannot be stably driven to be started through the friction end, and therefore the using effect of the friction plate type 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 friction plate type pull-free device. Background Art

[0002] A friction plate-type starter for diesel engines is a starting aid that utilizes the friction of the friction plate to manually generate sufficient torque to help overcome initial starting resistance. The device primarily consists of a friction plate, spring, drive shaft, and operating handle. When the handle is operated, friction between the friction plate and the drive shaft creates friction, in turn driving the engine. Compared to traditional starting methods, the friction plate-type starter offers advantages such as simple structure, ease of operation, and high starting efficiency. It is widely used in various diesel engine starting processes, particularly in conditions with frequent starts and harsh environments. Furthermore, it requires no external power source and can provide engine starting power even when a battery is not available or low on charge, making it an economical and practical starting solution.

[0003] When starting a diesel engine, a friction plate-type pull-free device is an important auxiliary device. Its main function is to reduce starting resistance and simplify the starting process. It effectively transfers the spring force generated by the pull-free device's spiral spring to the engine through the friction between the internal friction plate and the engine starter cup, thereby achieving a smooth start of the engine. The friction plate-type pull-free device has the characteristics of simple structure, easy maintenance, and high starting efficiency. It can provide stable starting performance in low-temperature environments, reduce energy consumption and wear during the starting process, and extend the service life of the engine. The problem with the above technology is that during the process of assisting the start of the diesel engine with the friction plate-type pull-free device, there is a low friction effect, and it is impossible to stably drive the diesel engine to start through the friction end, thereby reducing the effectiveness of the friction plate-type pull-free device. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a friction plate 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 friction plate type pull-free device includes a ratchet, a flat washer, a bearing, an input gear shaft and a housing, the flat washer is located on the front side of the ratchet, the bearing is located on the front side of the flat washer, the surface on the rear side of the input gear shaft is respectively sleeved and connected with the inner cavity of the bearing, the flat washer and the ratchet, and the inner cavity of the housing is rotatably connected with the surface of the input gear shaft; the front side of the housing is provided with a claw disk friction mechanism used in conjunction with a diesel engine; the rear side of the claw disk friction mechanism is provided with an energy storage mechanism used in conjunction with the claw disk friction mechanism; the rear side of the housing is provided with an energy storage retention mechanism used in conjunction with the energy storage mechanism.

[0006] In order to improve the connection stability between the friction plate type pull-free device and the diesel engine, preferably, the claw plate friction mechanism includes a claw plate upper cover, a claw plate friction part and a claw plate lower cover, the claw plate upper cover is located on the front side of the claw plate lower cover, the rear side of the claw plate upper cover and the front side of the claw plate lower cover are fixed and installed by rivets, the claw plate friction part is located at the opposite ends of the claw plate upper cover and the claw plate lower cover and is connected by a rivet combination, by setting the claw plate friction mechanism, the claw plate upper cover can cooperate with the claw plate lower cover to achieve the effect of quickly fitting and fixing the claw plate friction part, thereby achieving the effect of stable docking and fitting with the starting end of the diesel engine through the claw plate friction part.

[0007] The transmission gear is located at the rear side of the output shaft and is fixedly installed on the output shaft, and the rear side of the transmission gear is meshed with the surface of the front side of the input gear shaft. The coil spring is located in the inner cavity of the coil spring box and is fixedly installed at the screw of the coil spring box. The other side of the coil spring is plugged into the inner cavity of the output shaft, and the coil spring box cover is located at the front side of the coil spring box and is locked with the screw by a nut, and the front side of the output shaft is plugged into and fit with the inner cavity of the friction part of the claw disk. By setting up the energy storage mechanism, the transmission gear can achieve the effect of quickly driving the coil spring to be wound through the mutual cooperation of the output shaft, and when the tightening force of the coil spring is released, the friction part of the claw disk can be driven outward by the cam part.

[0008] In order to improve the use effect of the energy storage mechanism, preferably, the energy storage holding mechanism includes a pawl and a pawl return torsion spring, the pawl is located on the rear side of the shell and is movably connected to the rear side of the shell through a rotating shaft, the front side of the pawl return torsion spring is fixedly installed on the rear side of the shell, and the rear side of the pawl return torsion spring is fixedly installed on the surface of the pawl. By setting up the energy storage holding mechanism, the pawl can maintain the tightening force of the coil spring through mutual cooperation with the ratchet wheel, and after the pawl is disengaged from the abutment with the ratchet wheel, the tightening force of the coil spring can be quickly released.

[0009] In order to improve the use effect of the claw disk friction mechanism, preferably, the claw disk friction part is composed of three support plates, and the outer side of the claw disk friction part is fitted with a friction plate, and the three support plates are connected by a tension spring, one side of the tension spring is fixedly installed at the through hole in the inner cavity of the friction part and the other side of the tension spring is fixedly installed to the surface of the claw disk cover plate. By setting the claw disk friction part, the tightening force of the coil spring can be released, and the claw disk friction part can be quickly pushed outward through the cam part. When the claw disk friction part is pushed outward, the inner wall of the starting cup of the diesel engine can be driven to rotate through the outermost friction plate, thereby achieving the effect of stably driving the diesel engine for rapid starting.

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

[0011] The utility model is provided with a ratchet, a flat washer, a bearing, an input gear shaft, a housing, a pawl plate friction mechanism, an energy storage mechanism and an energy storage holding mechanism. The input gear shaft is started by the output device, and the input gear shaft drives the transmission gear through the gear end on the front side. The input gear shaft drives the ratchet and the pawl to abut and dock during the rotation process, and the transmission gear drives the output shaft to rotate during the rotation process. The output shaft rotates and tightens the coil spring through the connection end with the coil spring during the kinetic energy output process. After the coil spring is rotated and tightened, the pawl and the ratchet cooperate with each other to maintain the tightening kinetic energy. At this time, the pawl and the ratchet are in a state of abutment and engagement, and the output shaft rotates and outputs through its own The raised end of the output shaft drives the pawl to disengage from the tight connection with the ratchet, thereby achieving a quick release effect, and the tightening kinetic energy of the coil spring is released instantly. The tightening kinetic energy of the coil spring will quickly drive the friction part of the claw plate to move outward through the raised end of the output shaft during the release process, so that the friction part of the claw plate can be quickly and stably connected with the starting cup of the diesel engine. In the process of rotation of the friction part of the claw plate, the inner wall of the starting cup of the diesel engine will be driven to rotate through the outermost friction plate, thereby realizing rapid starting of the diesel engine. After the diesel engine is started, the friction part can be pulled to reset by the tension of the tension spring, thereby improving the use effect of the friction-type pull-free device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] In the figure: 1. ratchet; 2. flat washer; 3. bearing; 4. input gear shaft; 5. housing; 6. pawl plate friction mechanism; 7. energy storage mechanism; 8. energy storage holding mechanism; 601. pawl plate upper cover; 602. pawl plate friction part; 603. pawl plate lower cover; 701. coil spring box; 702. coil spring box cover; 703. output shaft; 704. coil spring box cover bearing; 705. coil spring; 706. transmission gear; 801. pawl; 802. pawl return torsion spring. DETAILED DESCRIPTION

[0014] 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.

[0015] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0016] like Figure 1As shown, a friction plate type pull-free device provided by an embodiment of the present invention includes a ratchet 1, a flat washer 2, a bearing 3, an input gear shaft 4 and a housing 5. The flat washer 2 is located on the front side of the ratchet 1, the bearing 3 is located on the front side of the flat washer 2, and the surface of the rear side of the input gear shaft 4 is respectively sleeved with the inner cavity of the bearing 3, the flat washer 2 and the ratchet 1, and the inner cavity of the housing 5 is rotatably connected to the surface of the input gear shaft 4; the front side of the housing 5 is provided with a claw disk friction mechanism 6 used in conjunction with the diesel engine; the rear side of the claw disk friction mechanism 6 is provided with an energy storage mechanism 7 used in conjunction with the claw disk friction mechanism 6; the rear side of the housing 5 is provided with an energy storage holding mechanism 8 used in conjunction with the energy storage mechanism 7, and the claw disk friction mechanism 6 includes a claw disk upper cover 601, a claw disk friction part 602 and a claw disk lower cover 603. 03, the claw plate upper cover 601 is located on the front side of the claw plate lower cover 603, the rear side of the claw plate upper cover 601 and the front side of the claw plate lower cover 603 are fixed and installed by rivets, the claw plate friction part 602 is located at the opposite ends of the claw plate upper cover 601 and the claw plate lower cover 603 and is connected by rivets. By setting the claw plate friction mechanism 6, the claw plate upper cover 601 can cooperate with the claw plate lower cover 603 to achieve the effect of quickly fitting and fixing the claw plate friction part 602, so that the claw plate friction part 602 can be stably docked and fitted with the starting end of the diesel engine. The energy storage mechanism 7 includes a coil spring box 701, a coil spring box cover plate 702, an output shaft 703, a coil spring box cover plate bearing 704, a coil spring 705 and a transmission gear The front side of the output shaft 703 is plugged into the inner cavity of the claw plate friction part 602. By setting the energy storage mechanism 7, the transmission gear 706 plays a role in passing the output shaft 703 through the inner cavity of the output shaft 703. The pawl 801 is in the state of being rotated and the pawl 802 is in the state of being rotated.This can achieve the effect of quickly releasing the tightening force of the coil spring 705. The claw plate friction part 602 is composed of three support plates. The outer side of the claw plate friction part 602 is fitted with a friction plate. The three support plates are connected by a tension spring. One side of the tension spring is fixedly installed at the through hole in the inner cavity of the friction part, and the other side of the tension spring is fixedly installed to the surface of the claw plate cover. By setting the claw plate friction part 602, when the tightening force of the coil spring 705 is released, the claw plate friction part 602 can be quickly pushed outward by the cam part. When the claw plate friction part 602 is pushed outward, the inner wall of the starting cup of the diesel engine can be driven to rotate through the outermost friction plate, thereby achieving the effect of stably driving the diesel engine for rapid starting.

[0017] The working principle of this utility model:

[0018] When in use, the input gear shaft 4 is started through the output device, and the input gear shaft 4 will drive the transmission gear 706 through the gear end on the front side, and the input gear shaft 4 will drive the ratchet 1 to abut against the pawl 801 during the rotation, and the transmission gear 706 will drive the output shaft 703 to rotate during the rotation. During the kinetic energy output process, the output shaft 703 will rotate and tighten the coil spring 705 through the connection end with the coil spring 705. After the coil spring 705 is rotated and tightened, it will maintain the tightening kinetic energy through the mutual cooperation between the pawl 801 and the ratchet 1. At this time, the pawl 801 and the ratchet 1 are in abutment and engagement state, and during the rotation output process, the output shaft 703 will drive the pawl 80 1 is disengaged from the tight docking with the ratchet 1, thereby achieving a quick release effect, and the tightening kinetic energy of the coil spring 705 is released instantly, and the tightening kinetic energy of the coil spring 705 will quickly drive the claw plate friction part 602 to move outward through the raised end of the output shaft 703 during the release process, thereby achieving the effect that the claw plate friction part 602 can be quickly and stably connected with the starting cup of the diesel engine, and in the process of rotation of the claw plate friction part 602, the inner wall of the starting cup of the diesel engine will be driven to rotate through the outermost friction plate, thereby realizing rapid starting of the diesel engine. After the diesel engine is started, the friction part can be pulled to reset by the tension of the tension spring, thereby improving the use effect of the friction-type pull-free device.

[0019] 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.

[0020] 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 friction plate type pull-free device, comprising a ratchet (1), a flat washer (2), a bearing (3), an input gear shaft (4) and a housing (5), characterized in that: The flat washer (2) is located on the front side of the ratchet (1), the bearing (3) is located on the front side of the flat washer (2), the surface of the rear side of the input gear shaft (4) is sleeve-connected to the inner cavity of the bearing (3), the flat washer (2) and the ratchet (1), respectively, and the inner cavity of the housing (5) is rotatably connected to the surface of the input gear shaft (4); The front side of the housing (5) is provided with a claw-disc friction mechanism (6) for use with a diesel engine; An energy storage mechanism (7) is provided on the rear side of the claw disc friction mechanism (6) and is used in conjunction with the claw disc friction mechanism (6); An energy storage and holding mechanism (8) used in conjunction with the energy storage mechanism (7) is provided on the rear side of the housing (5).

2. The friction plate type pull-free device according to claim 1, characterized in that: The claw disc friction mechanism (6) comprises a claw disc upper cover (601), a claw disc friction portion (602) and a claw disc lower cover (603); the claw disc upper cover (601) is located at the front side of the claw disc lower cover (603); the rear side of the claw disc upper cover (601) and the front side of the claw disc lower cover (603) are fixedly mounted via rivets; the claw disc friction portion (602) is located at opposite ends of the claw disc upper cover (601) and the claw disc lower cover (603) and is connected via a rivet assembly.

3. The friction plate type pull-free device according to claim 2, characterized in that: The energy storage mechanism (7) comprises a coil spring box (701), a coil spring box cover (702), an output shaft (703), a coil spring box cover bearing (704), a coil spring (705) and a transmission gear (706). Both sides of the output shaft (703) are assembled with the coil spring box cover bearing (704) via bearings (3). The transmission gear (706) is located at the rear side of the output shaft (703) and is fixedly mounted to the output shaft (703). The rear side of the transmission gear (706) is connected to the input gear. The surface of the front side of the shaft (4) is meshed and connected, the coil spring (705) is located in the inner cavity of the coil spring box (701) and is fixedly installed on the screw of the coil spring box (701), the other side of the coil spring (705) is plugged and installed with the inner cavity of the output shaft (703), the coil spring box cover (702) is located on the front side of the coil spring box (701) and is locked with the front side of the coil spring box (701) through a nut and a screw, and the front side of the output shaft (703) is plugged and fitted with the inner cavity of the claw disk friction part (602).

4. The friction plate type pull-free device according to claim 1, characterized in that: The energy storage and holding mechanism (8) comprises a pawl (801) and a pawl return torsion spring (802), wherein the pawl (801) is located at the rear side of the housing (5) and is movably connected to the rear side of the housing (5) via a rotating shaft, the front side of the pawl return torsion spring (802) is fixedly mounted to the rear side of the housing (5), and the rear side of the pawl return torsion spring (802) is fixedly mounted to the surface of the pawl (801).

5. The friction plate type pull-free device according to claim 2, characterized in that: The claw disc friction part (602) is composed of three support plates, the outer side of the claw disc friction part (602) is fitted with a friction plate, and the three support plates are connected by a tension spring, one side of the tension spring is fixedly installed at the through hole in the inner cavity of the friction part, and the other side of the tension spring is fixedly installed on the surface of the claw disc cover plate.

Images