CN210370991U

CN210370991U - Starting device for engine

Info

Publication number: CN210370991U
Application number: CN201921504067.3U
Authority: CN
Inventors: 林勇; 何洪伟
Original assignee: Taizhou Kunzheng Technology Co ltd
Current assignee: Taizhou Kunzheng Technology Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-04-21
Anticipated expiration: 2029-09-10

Abstract

The utility model provides a starting drive for engine belongs to auxiliary starting technical field. It solves the problem of how to further improve the stability of use. This a starting drive for engine includes the shell and sets up the pivot in the shell, the pivot includes the spacing axle sleeve in the shell of axial and wears to establish the axis body in the axle sleeve, the axis body is fixed with axle sleeve sliding connection and circumference, the inner of axle sleeve is connected with and can drives its pivoted actuating mechanism, the axis body outer end stretches out the axle sleeve outside and is connected with the clutching mechanism who is used for combining together with the engine, the axle sleeve lateral part runs through and is provided with two at least locating holes, the axial distribution of axle sleeve is followed to each locating hole, the axis body lateral part is equipped with the mounting hole, be equipped with the elastic locating element in the mounting hole, elastic locating element one end can stretch into one of them locating hole in the part under the spring action of. The utility model discloses stability when having improved the use better, life is also longer.

Description

Starting device for engine

Technical Field

The utility model belongs to the technical field of the auxiliary start, a starting drive is related to, especially, relate to a starting drive for engine.

Background

The degree of agricultural mechanization is higher and higher, and agricultural ploughs are more and more commonly used, and the power source of the agricultural ploughs is an air-cooled diesel engine which can only enter a running state by means of a starter. The traditional starter basically comprises a shell, a rotating shaft and a volute spiral spring which are arranged in the shell, the rotating shaft is axially limited in the shell, the rotating shaft penetrates through the volute spiral spring, the inner end of the volute spiral spring is connected with the rotating shaft, the outer end of the volute spiral spring is fixed on the shell, one end of the rotating shaft is connected with a starting machine, the other end of the rotating shaft is connected with a clutch mechanism, the shell of the starter is fixed on a shell of the air-cooled diesel engine when in use, the clutch mechanism is located in a starting cup on a flywheel of the air-cooled diesel engine and used for driving the rotating shaft to rotate through the starting mechanism to enable the elastic force of the volute spiral spring to be tightened, then the elastic force of the volute spiral spring is released to drive the rotating shaft to rotate reversely at a high speed, the clutch mechanism is opened outwards under the. However, the mounting height of the starting cup on each air-cooled diesel engine is uniquely determined and cannot be adjusted, and the position of the clutch mechanism on the traditional starter after being connected to the rotating shaft cannot be adjusted, so that the starter cannot be commonly used with air-cooled diesel engines of different models.

Therefore, the applicant has proposed a starter with application number 201820808229.1 for an air-cooled diesel engine, which includes a housing and a rotating shaft disposed in the housing, the inner end of the rotating shaft is connected with a starting mechanism capable of driving the rotating shaft to rotate, the outer end of the rotating shaft is connected with a clutch mechanism for combining with a starting cup of the air-cooled diesel engine, the rotating shaft includes a shaft sleeve axially limited in the housing and a shaft body penetrating in the shaft sleeve, the shaft body is slidably connected with the shaft sleeve and circumferentially fixed, the starting mechanism is connected to the inner end of the shaft sleeve, the outer end of the shaft body extends out of the shaft sleeve, the clutch mechanism is connected to the outer end of the shaft body, the outer side of the shaft body is provided with at least one elastic friction ring, the outer side wall of the friction ring abuts against the inner side wall of the shaft. This starter is through setting up the pivot into sliding connection's axle sleeve and axis body for the pivot can extend or retract, thereby makes the starter can carry out generally on the air-cooled diesel engine of various models, utilizes the self elasticity of friction ring to form certain resistance to the slip of axis body simultaneously, in order to offset the power that is used in the axis body because of air-cooled diesel engine vibrations.

However, in practical application, the actual vibration amplitude of the air-cooled diesel engine is often greater than that of an indoor test, and an effective integral relation between the shaft body and the shaft sleeve after the rotating shaft is adjusted cannot be formed only by the elasticity of the friction ring, so that the stability of the starter in use cannot be effectively guaranteed; in addition, the vibration of the air-cooled diesel engine causes the friction ring to be easy to have eccentric wear, so that the effect of the friction ring is ineffective, and the service life and the stability are influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a starting drive for engine, the technical problem that solve is how to further improve the stability of using.

The purpose of the utility model can be realized by the following technical proposal:

a starting drive for engine, including the shell and set up the pivot in the shell, the pivot includes that the axial is spacing in the shell the axle sleeve and wears to establish the axis body in the axle sleeve, and the axis body is fixed with axle sleeve sliding connection and circumference, and the inner of axle sleeve is connected with and can drives its pivoted actuating mechanism, and the axis body outer end stretches out the axle sleeve and outer and be connected with the clutching mechanism who is used for combining together with the engine, a serial communication port, the axle sleeve lateral part runs through and is provided with two at least locating holes, and each locating hole distributes along the axial of axle sleeve, and the axis body lateral part is equipped with the mounting hole, is equipped with the elastic locating element in the mounting hole, and elastic locating element one end can stretch into one of them locating hole under the.

During the use, the user realizes lengthening and retracting of pivot through the sliding connection of axis body and axle sleeve for the user can adjust the length of pivot according to the actual installation condition, thereby makes this starting drive carry out generally on the engine of various models, has improved the suitability well. Simultaneously, set up two at least locating holes at the axle sleeve lateral part, length when matching each locating hole position and pivot and each model engine corresponds for the elastic positioning spare can partially stretch into corresponding locating hole after the length setting of pivot, thereby plays and prevents the relative slip of axis body and axle sleeve when starting drive during operation, guarantees the stability when using.

Compare in prior art and only utilize the frictional force of friction ring to form the location, this starting drive utilizes the cooperation of elastic positioning piece and locating hole to make axis body and axle sleeve can link and become whole, has improved the stability when using from this better, and elastic positioning piece does not age like the friction ring, and life is also longer.

In the starting device for the engine, the elastic positioning element includes a positioning spring and a positioning steel ball which are both arranged in the mounting hole, and the positioning steel ball is partially embedded into one of the positioning holes under the elastic force of the positioning spring.

In the starting device for the engine, the shaft sleeve, the shaft body and the positioning steel balls are all made of metal materials.

The shaft sleeve, the shaft body and the positioning steel balls are all made of metal materials, so that rigid connection can be formed between the shaft sleeve and the shaft body, and stability in use is higher.

In the starting device for the engine, as another technical solution, the elastic positioning member is a ball plunger.

In foretell starting drive for engine, be equipped with volute spiral spring in the shell, volute spiral spring is passed in the pivot, and the axle sleeve outside is equipped with along the axial and steps down the groove and run through the lateral wall of axle sleeve, and the axis body outside is equipped with the spread groove along the axial, and the spread groove sets up with stepping down the groove relatively, and volute spiral spring's one end is passed and is stepped down the groove and insert in the spread groove, and volute spiral spring's the other end is connected with the shell, and the mounting hole is linked together with the spread groove, and the orientation of seting up of mounting hole is.

The opening direction of the mounting hole is vertical to the connecting groove, so that the arrangement of the elastic positioning piece can not influence the normal assembly of the volute spiral spring.

Compared with the prior art, the starting device for the engine realizes the extension and retraction of the rotating shaft through the sliding connection of the shaft body and the shaft sleeve, and ensures that the starting device can be used universally on engines of various types; utilize the cooperation of elastic positioning piece and locating hole to make axis body and axle sleeve can link and become whole, improved the stability when using from this better, and elastic positioning piece can not age, and life is also longer.

Drawings

Fig. 1 is a schematic diagram of the starting apparatus for an engine of the present invention.

Fig. 2 is another angle schematic diagram of the starting apparatus for an engine of the present invention.

Fig. 3 is a sectional view of the starting apparatus for an engine.

FIG. 4 is another angular cross-sectional view of the shaft body and the sleeve according to one embodiment.

In the figure, 1, a housing; 2. a rotating shaft; 21. a shaft sleeve; 211. positioning holes; 212. a yielding groove; 22. a shaft body; 221. mounting holes; 222. connecting grooves; 3. a starting mechanism; 4. a clutch mechanism; 5. an elastic positioning member; 51. a positioning spring; 52. positioning the steel balls; 6. a spiral spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, 2 and 3, the starting device for the engine includes a housing 1 and a rotating shaft 2 disposed in the housing 1, the inner end of the rotating shaft 2 is connected with a starting mechanism 3 capable of driving the rotating shaft 2 to rotate, and the outer end of a shaft body 22 is connected with a clutch mechanism 4 for combining with the engine. Specifically, the rotating shaft 2 includes a shaft sleeve 21 axially limited in the housing 1 and a shaft body 22 inserted in the shaft sleeve 21, and the shaft body 22 is slidably connected and circumferentially fixed to the shaft sleeve 21. The starting mechanism 3 is connected to the inner end of the shaft sleeve 21, the outer end of the shaft body 22 extends out of the shaft sleeve 21, and the clutch mechanism 4 is connected to the outer end of the shaft body 22.

The specific structure and principle of the starting mechanism 3 and the clutch mechanism 4 in the starting device for the engine can refer to a starter disclosed by application number 201910227825.X, and the specific structure between the shaft body 22 and the shaft sleeve 21 for realizing axial limiting and circumferential fixing of the shaft body and the shaft sleeve can refer to a starter disclosed by application number 201820808229.1 for the air-cooled diesel engine.

As shown in fig. 4, at least two positioning holes 211 are formed through the side of the sleeve 21, and the positioning holes 211 are distributed along the axial direction of the sleeve 21. The side of the shaft body 22 is provided with a mounting hole 221, an elastic positioning element 5 is arranged in the mounting hole 221, one end of the elastic positioning element 5 can extend into any one of the positioning holes 211 under the action of the self elasticity of the elastic positioning element 5, and the surface of one end of the elastic positioning element 5 extending into the positioning hole 211 is a spherical surface. In the present embodiment, the elastic positioning element 5 includes a positioning spring 51 and a positioning steel ball 52 both disposed in the mounting hole 221, and the positioning steel ball 52 is partially inserted into the positioning hole 211 under the elastic force of the positioning spring 51. The shaft body 22, the shaft sleeve 21 and the positioning steel balls 52 are all made of metal materials.

As shown in fig. 3 and 4, a scroll spring 6 is disposed in the housing 1, the rotating shaft 2 passes through the scroll spring 6, the shaft sleeve 21 is axially provided with a relief groove 212, the relief groove 212 penetrates through a side wall of the shaft sleeve 21, the shaft body 22 is axially provided with a connecting groove 222, the connecting groove 222 is opposite to the relief groove 212, one end of the scroll spring 6 passes through the relief groove 212 and is inserted into the connecting groove 222, the other end of the scroll spring 6 is connected with the housing 1, the mounting hole 221 is communicated with the connecting groove 222, and the opening direction of the mounting hole 221 is perpendicular to the connecting groove 222.

When in use, the shell 1 of the starting device is fixed on the shell of the engine, and the clutch mechanism 4 is ensured to be positioned in the starting cup of the engine. The starting device starts the engine in the same way as the starter in the prior art, and the starting device firstly utilizes the starting mechanism 3 to drive the rotating shaft 2

The user realizes the extension and the retraction of the rotating shaft 2 through the sliding connection of the shaft body 22 and the shaft sleeve 21, so that the user can adjust the length of the rotating shaft 2 according to the actual installation condition, the starting device can be universal on engines of various types, and the applicability is well improved. Meanwhile, at least two positioning holes 211 are formed in the side portion of the shaft sleeve 21, and the positions of the positioning holes 211 correspond to the lengths of the rotating shaft 2 matched with engines of various types, so that the elastic positioning piece 5 can partially extend into the corresponding positioning holes 211 after the length of the rotating shaft 2 is set, relative sliding between the shaft body 22 and the shaft sleeve 21 is prevented when the starting device works, and stability in use is guaranteed.

Compared with the prior art that the friction force of the friction ring is only utilized to form positioning, the starting device utilizes the positioning steel balls 52 to partially extend into the positioning holes 211 under the action of the elastic force of the positioning springs 51, so that the shaft body 22 and the shaft sleeve 21 can form rigid connection, the shaft body 22 and the shaft sleeve 21 are connected into a whole, the stability in use is better improved, the elastic positioning piece 5 is not aged or has eccentric wear phenomenon like the friction ring, and the service life is longer.

Example two

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in the present embodiment, the elastic positioning member 5 is a ball plunger.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A starting drive for engine, including shell (1) and set up pivot (2) in shell (1), pivot (2) are including the axle sleeve (21) of axial spacing in shell (1) and wear to establish axis body (22) in axle sleeve (21), axis body (22) and axle sleeve (21) sliding connection and circumference are fixed, the inner of axle sleeve (21) is connected with and drives its pivoted actuating mechanism (3), axis body (22) outer end stretches out outside axle sleeve (21) and is connected with clutch mechanism (4) that are used for combining together with the engine, a serial communication port, axle sleeve (21) lateral part is run through and is provided with two at least locating hole (211), each locating hole (211) distributes along the axial of axle sleeve (21), axis body (22) lateral part is equipped with mounting hole (221), be equipped with elasticity setting element (5) in mounting hole (221), elasticity setting element (5) one end can stretch into one of them locating hole (211) under the elasticity effect of self, and one end surface of the elastic positioning piece (5) extending into the positioning hole (211) is a spherical surface.

2. The starting device for the engine according to claim 1, wherein the elastic positioning member (5) comprises a positioning spring (51) and a positioning steel ball (52) which are both arranged in the mounting hole (221), and the positioning steel ball (52) is partially embedded into one of the positioning holes (211) under the action of the elastic force of the positioning spring (51).

3. The starting device for the engine according to claim 2, wherein the shaft sleeve (21), the shaft body (22) and the positioning steel balls (52) are made of metal materials.

4. Starting device for an engine according to claim 1, characterized in that said elastic positioning element (5) is a ball plunger.

5. The starting device for the engine according to claim 1, wherein a scroll spring (6) is arranged in the housing (1), the rotating shaft (2) penetrates through the scroll spring (6), the shaft sleeve (21) is axially provided with a relief groove (212) in the outer side and the relief groove (212) penetrates through the side wall of the shaft sleeve (21), the shaft body (22) is axially provided with a connecting groove (222) in the outer side, the connecting groove (222) is opposite to the relief groove (212), one end of the scroll spring (6) penetrates through the relief groove (212) and is inserted into the connecting groove (222), the other end of the scroll spring (6) is connected with the housing (1), the mounting hole (221) is communicated with the connecting groove (222), and the opening direction of the mounting hole (221) is perpendicular to the connecting groove (222).