Telescopic claw disc and engine auxiliary starter

Abstract

The utility model relates to the field of machine manufacturing, in particular to a telescopic claw disc and an engine auxiliary starter in the field of engine auxiliary starting. The telescopic claw disc comprises a bottom plate (1), a plurality of hinged columns (2) are arranged on the circumference of the bottom plate (1), clamping claws (3) are arranged on the hinged columns (2) in a one-to-one correspondence mode, and the clamping claws (3) are in running fit with the hinged columns (2). By combining the design of the clamping part and the starting cup in advance, the impact during formal starting of equipment can be greatly reduced, the service life of related parts is prolonged to a certain extent, and the clamping jaw can be kept in a retracted state for a long time due to the arrangement of the elastic piece, so that the equipment is prevented from being damaged by misoperation and card punching. And meanwhile, the modular change is small, the modularization rate is high, the situation that the whole telescopic claw disc is replaced due to damage of a certain single component is avoided, the use cost is saved, and the large popularization value is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical manufacturing field, especially is related to a kind of telescopic claw disc and engine auxiliary starter in engine auxiliary starting field. BACKGROUND

[0002] With the acceleration of agricultural modernization process, the performance requirement of agricultural machinery equipment is continuously improved, especially in starting system, how to realize efficient and reliable starting air-cooled diesel engine becomes an important issue. The traditional starting mode usually relies on hand crank starting device, and energy is transmitted to starting mechanism by mechanical transmission, and the connection mode of starting mechanism and engine directly affects the reliability and service life of starting.

[0003] In the prior art, starting device usually adopts clutch mechanism (including claw base and starting claw) to be connected with the starting cup of engine. The common method is to drive the rotating shaft by hand crank starting device, and the high-speed rotation is generated when the elastic force of scroll spring is released, to drive the engine starting. However, this mode has a significant problem: when the starting claw is thrown out at high speed, violent impact will occur between the starting claw and the starting cup, which can cause deformation or fracture on the surface of the starting claw and the starting cup, and seriously shorten the service life.

[0004] Therefore, the technical personnel in the art are committed to developing a telescopic claw disc and engine auxiliary starter which is convenient to operate and has high modularization degree. CONTENT OF THE UTILITY MODEL

[0005] In view of the above defects of the prior art, the technical problem to be solved by the utility model is to provide a telescopic claw disc and engine auxiliary starter.

[0006] To achieve the above-mentioned purpose, the utility model provides a telescopic claw disc, which comprises a bottom plate, a plurality of hinge columns are circumferentially arranged on the bottom plate, a plurality of clamping claws are arranged on the hinge columns one by one in a corresponding manner, and the clamping claws are rotationally matched with the hinge columns. The bottom plate provides a mounting base for the hinge columns, and the hinge columns provide a mounting base for the clamping claws. The clamping claws can rotate around the hinge columns as the shaft.

[0007] Preferably, a limiting portion and a clamping portion are arranged on the clamping claw, and the limiting portion and the clamping portion are both extended outward from the side wall of the clamping claw.

[0008] Preferably, a limiting column is arranged beside the clamping claw in a one-to-one corresponding manner, the limiting column is located on the rotation path of the limiting portion, and the inner side of the limiting portion abuts against the limiting column when the clamping portion rotates away from the center of the bottom plate. The rotation angle of the clamping claw outward is controlled by arranging the limiting column.

[0009] Preferably, a top plate is arranged at the end of the hinge column away from the bottom plate, and the top plate is arranged in parallel with the bottom plate.

[0010] Preferably, the hinge column is provided as 6.

[0011] The utility model also provides a engine auxiliary starter, including the telescopic claw disc of any above described.

[0012] Preferably, it further includes a starting cover gap-fitted outside the telescopic claw disc, the starting cover is the cover structure of one end opening, and the opening end is close to one end of the bottom plate, and the opposite end is a closed end.

[0013] Preferably, the starting cover is provided with a plurality of axial tooth-shaped openings corresponding to the clamping portions one by one close to one end of the bottom plate, and the end portion of the clamping portion protrudes outside the axial tooth-shaped opening.

[0014] Preferably, the elastic member is provided with a plurality of axial tooth-shaped openings corresponding to the clamping portions one by one close to one end of the bottom plate, and the end portion of the clamping portion protrudes outside the axial tooth-shaped opening.

[0015] Preferably, the width of the clamping portion is less than the width of the axial tooth-shaped opening, and the length of the clamping portion is greater than the width of the axial tooth-shaped opening.

[0016] The utility model discloses the beneficial effects are: the utility model discloses the design of pre-combining the clamping portion and starting cup can greatly reduce the impact when the equipment is formally started, prolongs the service life of relevant components to some extent, and the setting of elastic member makes the claw can keep retracted state for a long time to prevent misoperation and damage the equipment. At the same time, the application has little modification, and the modularization rate is high, so that the utility model discloses a single component is damaged and is replaced with the whole telescopic claw disc, saves the use cost, and has greater popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic drawing of the claw in a specific embodiment of the utility model.

[0018] Figure 2 It is the assembly schematic drawing of the claw and the bottom plate in a specific embodiment of the utility model.

[0019] Figure 3 It is the assembly schematic drawing of the claw in a specific embodiment of the utility model.

[0020] Figure 4 It is the assembly schematic drawing of the top plate and the bottom plate in a specific embodiment of the utility model.

[0021] Figure 5This is a schematic diagram of the structure of the starter cover in a specific embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of the assembly of the starter cover and the telescopic claw plate in a specific embodiment of this utility model.

[0023] Figure 7 This is a bottom view of a specific embodiment of the present invention.

[0024] 1. Base plate; 2. Hinge column; 3. Claw; 3a. Limiting part; 3b. Snap-fit ​​part; 4. Limiting column; 5. Top plate; 6. Starter cover; 7. Axial toothed opening; 8. Elastic element; 9. Drive shaft. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-2 As shown, a telescopic claw disc includes a base plate 1. A plurality of hinge posts 2 are arranged circumferentially on the base plate 1. In this embodiment, there are six hinge posts 2, spaced apart. In other embodiments, there may be at least one hinge post 2. The base plate 1 provides the mounting base for the hinge posts 2. Each hinge post 2 has a corresponding claw 3, which rotatably engages with the hinge posts 2. In this embodiment, the rotatable engagement is a clearance fit. The hinge posts 2 provide the mounting base for the claws 3, which can rotate around the hinge posts 2 as an axis.

[0027] The claw 3 is provided with a limiting part 3a and a locking part 3b. Both the limiting part 3a and the locking part 3b are formed by extending outward from the side wall of the claw 3 in two different directions. The length of the locking part 3b is greater than that of the limiting part 3a.

[0028] like Figure 3 As shown, each claw 3 is provided with a corresponding limiting post 4. In this embodiment, there are also 6 limiting posts 4, which are distributed at intervals along the circumference of the base plate 1. The limiting posts 4 are located on the rotation path of the limiting part 3a. When the locking part 3b rotates away from the center of the base plate 1, the inner side of the limiting part 3a abuts against the limiting post 4, thereby limiting the outward rotation angle of the claw 3.

[0029] like Figure 4As shown, a top plate 5 is provided at the end of the hinged column 2 away from the base plate 1, and the top plate 5 is arranged parallel to the base plate 1. The base plate 1 and the top plate 5 together provide support for the hinged column 2 and the limiting column 4.

[0030] like Figures 5-7 As shown, this utility model also provides an engine auxiliary starter, including a telescopic claw disc as described above, and a starter cover 6 that is clearance-fitted to the outside of the telescopic claw disc. The starter cover 6 is a cover-shaped structure with one end open. The end of the starter cover 6 near the base plate 1 is the open end, and the other end is the closed end.

[0031] The starter cover 6 has several axial toothed openings 7 near the bottom plate 1, each corresponding to a locking part 3b. In this embodiment, the axial toothed openings 7 are also arranged in 6 groups, with the 6 groups of axial toothed openings 7 distributed in a ring at intervals. The width of the axial toothed openings 7 is greater than the width of the locking parts 3b, and the length of the locking parts 3b is greater than the width of the axial toothed openings 7. The end of the locking parts 3b extends out of the axial toothed openings 7. This arrangement allows the two sides of the locking parts 3b to abut against the two sides of the axial toothed openings 7 respectively. In actual use, one side of the locking part 3b abuts against one side of the axial toothed opening 7, and the axial toothed opening 7 applies a reaction force to push the pawl 3 to swing about the hinge post 2 towards the center of the bottom plate 1. Since the length of the locking part 3b is greater than the width of the axial toothed opening 7, when the pawl 3 swings about the hinge post 2 towards the center of the bottom plate 1, the other side of the locking part 3b abuts against the other side of the axial toothed opening 7, thereby making the locking part 3b and the starter cover 6 engage with each other.

[0032] An elastic element 8 is fitted onto the hinge post 2. In this embodiment, the elastic element 8 is a torsion spring; other similar products may also be used in other embodiments. One end of the torsion spring is connected to the base plate 1, and the other end is connected to the snap-fit ​​part 3b. When the torsion spring is stretched, the inner side of the snap-fit ​​part 3b abuts against one side wall of the axial toothed opening 7.

[0033] In use, the base plate 1 rotates under the drive of the drive shaft 9, and the locking part 3b engages with the starter cover 6, thereby causing the starter cover 6 to rotate synchronously. When the drive shaft 9 reverses (the principle of reversing the drive shaft 9 is irrelevant to the inventive point of this application and will not be described here), the base plate 1 reverses synchronously, and the circumferential toothed opening applies a reaction force to the locking part 3b, causing it to rotate away from the center of the disc seat about the hinge post 2 as the axis. At this time, the elastic element 8 is further stretched until the inner side of the limiting part 3a abuts against the limiting post 4, thereby causing the end of the locking part 3b to engage with the starter cup (not shown in the figure) on the engine.

[0034] This application, through the pre-integration design of the locking part 3b and the start-up cup, significantly reduces the impact during the formal start-up of the equipment, extending the service life of related components to a certain extent. Furthermore, the elastic element 8 ensures that the claw 3 remains in the retracted state for an extended period, preventing accidental locking and damage to the equipment. Simultaneously, this application requires minimal module modification and has a high modularity, eliminating the need to replace the entire telescopic claw disc due to the failure of a single component, thus saving on operating costs and possessing significant promotional value.

[0035] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A telescopic claw disc, characterized in that: Includes a base plate (1), on which a plurality of hinge posts (2) are provided around the circumference of the base plate (1), and each of the hinge posts (2) is provided with a corresponding claw (3), and the claw (3) is rotatably engaged with the hinge post (2); The claw (3) is provided with a limiting part (3a) and a locking part (3b), both of which are formed by extending outward from the side wall of the claw (3); Each of the claws (3) is provided with a limiting post (4) corresponding to it. The limiting post (4) is located on the rotation path of the limiting part (3a). When the locking part (3b) rotates away from the center of the base plate (1), the inner side of the limiting part (3a) abuts against the limiting post (4).

2. The telescopic claw disc as described in claim 1, characterized in that: The hinge column (2) has a top plate (5) at the end away from the base plate (1), and the top plate (5) is arranged parallel to the base plate (1).

3. The telescopic claw disc as described in claim 1, characterized in that: The hinged posts (2) are configured to be 6 in number.

4. An engine auxiliary starter, characterized in that: Includes the telescopic claw disc as described in any one of claims 1-3.

5. The engine auxiliary starter as described in claim 4, characterized in that: It also includes a starter cover (6) that is fitted with the telescopic claw disk with clearance. The starter cover (6) is a cover-shaped structure with one end open. The end of the starter cover (6) near the base plate (1) is an open end, and the other end is a closed end.

6. The engine auxiliary starter as described in claim 5, characterized in that: The starter cover (6) has a plurality of axial toothed openings (7) that correspond one-to-one with the snap-fit ​​part (3b) at one end near the bottom plate (1), and the end of the snap-fit ​​part (3b) extends out of the axial toothed opening (7).

7. The engine auxiliary starter as described in claim 6, characterized in that: An elastic element (8) is sleeved on the hinge post (2). One end of the elastic element (8) is connected to the base plate (1), and the other end is connected to the snap-fit ​​part (3b). When the elastic element (8) is stretched, the inner side of the snap-fit ​​part (3b) abuts against the side wall of the axial toothed opening (7).

8. The engine auxiliary starter as described in claim 7, characterized in that: The width of the snap-fit ​​portion (3b) is smaller than the width of the axial toothed opening (7); The length of the snap-fit ​​portion (3b) is greater than the width of the axial toothed opening (7).

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