CN216519475U

CN216519475U - Transmission crankshaft timing gear

Info

Publication number: CN216519475U
Application number: CN202123436055.1U
Authority: CN
Inventors: 江洪; 江火平
Original assignee: Yuhuan Hongkun Machinery Co ltd
Current assignee: Yuhuan Hongkun Machinery Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-13
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a crankshaft timing gear of a transmission, and belongs to the technical field of machinery. It has solved current timing gear and has produced very big wearing and tearing easily at the meshing transmission in-process, leads to the not good problem of transmission effect. This derailleur bent axle timing gear, this timing gear outer lane has a plurality of wheel tooth portion, form the tooth's socket between the two-wheel tooth portion, this timing gear still includes the dabber and cooperates the gear assembly that sets up at the spindle, the gear assembly is by integrative gear one that constitutes, gear two and gear sleeve are constituteed, dabber fixed fit stretches into in the gear sleeve, dabber left end perisporium has radial outside extension and prevents the spacing abduction circle that gear one drops, dabber right-hand member middle part has the evagination circle of radial evagination, the spacing circle that prevents gear two drops has been cup jointed to the evagination circle fixedly. The utility model has the advantages of reducing the abrasion of the gear and prolonging the service life.

Description

Transmission crankshaft timing gear

Technical Field

The utility model belongs to the technical field of machinery, relates to a transmission, and particularly relates to a crankshaft timing gear of the transmission.

Background

Timing gears are gears that perform a time-scale orientation of the associated control functions performed in a mechanical device. At present, a timing gear of a crankshaft of a transmission is easy to generate great abrasion in the process of meshing transmission, the transmission effect of the timing gear is influenced, and even the integral work is influenced.

Disclosure of Invention

The present invention addresses the above-identified problems of the prior art by providing a transmission crankshaft timing gear that reduces wear and improves service life.

The purpose of the utility model can be realized by the following technical scheme: a timing gear of a crankshaft of a transmission is characterized by further comprising a mandrel and a gear assembly which is arranged on the mandrel in a matched mode, wherein the gear assembly comprises a first gear, a second gear and a gear sleeve which are integrally formed, the mandrel is fixedly matched and extends into the gear sleeve, a limiting outward-extending ring which extends outwards in the radial direction and prevents the first gear from falling off is arranged on the peripheral wall of the left end of the mandrel, a radially outward-protruding outer convex ring is arranged in the middle of the right end of the mandrel, and a limiting ring which prevents the second gear from falling off is fixedly sleeved on the outer convex ring;

the limiting expansion ring is provided with a first stretching ring stretching into the first gear, the first gear is provided with a first annular groove for the first stretching ring to stretch into, the first annular groove is internally provided with a first sealing pressing ring in a sealing manner, the middle part of the outer wall of the first sealing pressing ring is provided with a first annular bulge, one end of the first annular bulge is sleeved with a first spring, the first spring abuts against the first stretching ring, the other end of the first spring abuts against the first sealing pressing ring, a first lubricating cavity is sealed by the first sealing pressing ring in the first annular groove, lubricating oil is filled in the first lubricating cavity, a first lubricating groove communicated with the first lubricating cavity is formed in the first gear, and the first lubricating groove penetrates through the surface of the first gear to form a first lubricating port;

the limiting ring is internally provided with a second stretching ring extending into the second gear, the second gear is provided with a second annular groove for the second stretching ring to extend into, a second sealing pressing ring is arranged in the second annular groove in a sealing manner, the middle part of the outer wall of the second sealing pressing ring is provided with a second annular bulge, the outer sleeve of the second annular bulge is provided with a second spring, one end of the second spring is abutted against the second stretching ring, the other end of the second spring is abutted against the second sealing pressing ring, a second lubricating cavity is sealed by the second sealing pressing ring in the second annular groove, the second lubricating cavity is filled with lubricating oil, the second gear is internally provided with a second lubricating groove communicated with the second lubricating cavity, and the second lubricating groove penetrates through the surface of the second gear to form a second lubricating opening.

In the above transmission crankshaft timing gear, the front end of the first annular protrusion is guided into the first extending ring, and the front end of the second annular protrusion is guided into the second extending ring.

In the crankshaft timing gear of the transmission, the sealing rubber sleeves are respectively sleeved between the first sealing pressing ring and the second sealing pressing ring and between the first gear and the second gear in a sliding manner.

In the crankshaft timing gear of the transmission, the first extending ring and the second extending ring are respectively connected with the first gear and the second gear in a sealing manner through sealing connecting sleeves.

In the above transmission crankshaft timing gear, a bushing is arranged between the gear assembly and the spindle.

In the crankshaft timing gear of the transmission, the front end surface and the rear end surface of the first gear and the second gear are respectively provided with a plurality of heat dissipation grooves.

Compared with the prior art, this derailleur bent axle timing gear reaches beneficial effect: the abrasion of the gear during transmission is reduced through the self-lubricating structure, so that the service life of the whole body is prolonged; and the contact area is increased through the plurality of radiating grooves, so that the radiating effect is achieved.

Drawings

FIG. 1 is a perspective view of the crankshaft timing gear of the present transmission.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

In the figure, 1, a gear tooth part; 2. a mandrel; 3. a first gear; 4. a second gear; 5. a gear sleeve; 6. a limiting outward-extending ring; 7. an outer convex ring; 8. a limiting ring; 9. extending into the first ring; 10. a first sealing pressing ring; 11. the annular bulge I; 12. a first spring; 13. a first lubricating cavity; 14. a first lubricating groove; 15. sealing the rubber sleeve; 16. sealing the connecting sleeve; 17. a bushing; 18. a heat dissipation groove.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 2, this transmission crankshaft timing gear, this timing gear outer lane has a plurality of wheel tooth portion 1, form the tooth's socket between two wheel tooth portions 1, this timing gear still includes dabber 2 and the gear assembly of cooperation setting on dabber 2, the gear assembly is by integrative gear one 3 that constitutes, gear two 4 and gear sleeve 5 are constituteed, 2 fixed coordination of dabber stretch into in the

gear sleeve

5, 2 left end perisporium of dabber have radial outside extension and prevent the spacing abduction circle 6 that gear one 3 drops, 2 right-hand member middle parts of dabber have the outer convex circle 7 of radial evagination, the fixed spacing collar 8 that prevents that gear two 4 from dropping that has cup jointed on the outer convex circle 7.

Preferably, the limiting outward-extending ring 6 is provided with a first extending ring 9 extending into the first gear 3, the first gear 3 is provided with a first annular groove for the first extending ring 9 to extend into, the first annular groove is internally sealed with a first sealing pressing ring 10, the middle part of the outer wall of the first sealing pressing ring 10 is provided with a first annular bulge 11, the first annular bulge 11 is sleeved with a first spring 12, one end of the first annular bulge abuts against the first extending ring 9, the other end of the first spring abuts against the first sealing pressing ring 10, the first annular groove is internally sealed by the first sealing pressing ring 10 to form a first lubricating cavity 13, lubricating oil is filled in the first lubricating cavity 13, the first gear 3 is internally provided with a first lubricating groove 14 communicated with the first lubricating cavity 13, and the first lubricating groove 14 penetrates through the surface of the first gear 3 to form a first lubricating port.

Preferably, the limiting ring 8 is provided with a second stretching ring extending into the second gear 4, the second gear 4 is provided with a second annular groove for the second stretching ring to extend into, the second annular groove is internally provided with a second sealing pressing ring in a sealing manner, the middle part of the outer wall of the second sealing pressing ring is provided with a second annular bulge, the outer sleeve of the second annular bulge is provided with a second spring with one end abutting against the second stretching ring and the other end abutting against the second sealing pressing ring, the second annular groove is internally provided with a second lubricating cavity in a sealing manner by the second sealing pressing ring, the second lubricating cavity is also filled with lubricating oil, the second gear 4 is internally provided with a second lubricating groove communicated with the second lubricating cavity, the second lubricating groove penetrates through the surface of the second gear 4 to form a second lubricating port, and the structure between the limiting ring 8 and the second gear 4 is basically the same as the structure between the limiting flared ring 6 and the first gear 3, so that repeated marking is avoided in the attached drawings.

Preferably, the front end of the first annular protrusion 11 is guided into the first extension ring 9, and the front end of the second annular protrusion is guided into the second extension ring.

Preferably, the sealing rubber sleeve 15 is respectively sleeved between the first sealing pressing ring 10 and the second sealing pressing ring and between the first gear 3 and the second gear 4 in a sliding manner.

When spacing abduction circle 6 of fixed mounting, stretch into in ring 9 gets into ring channel one and supply protruding 11 direction of annular to stretch into its diapire department, and then drive sealed compact ring 10 backshifts and make in lubricating chamber 13 pressurized, and then drive lubricating oil and enter into lubricating groove 14, gear 3 during operations of being convenient for, the quick lubrication of lubricating oil, spacing abduction circle 6 tight fittings is in gear sleeve 5, later at gear 3 during operations of gear assembly, produce centrifugal force, lubricating oil lubricates from lubricating mouthful a discharge wheel tooth portion 1 and gear through lubricating groove 14. In this embodiment, a first lubrication groove 14 communicating with the first lubrication cavity 13 is formed in each gear tooth portion 1.

The lubrication principle of the second gear 4 is basically the same as that of the first gear 3, and therefore, the description is not repeated.

Preferably, the first extending ring 9 and the second extending ring are respectively connected with the first gear 3 and the second gear 4 in a sealing way through sealing connecting sleeves 16.

Preferably, a bushing 17 is provided between the gear assembly and the spindle 2.

In a further elaboration, a plurality of radiating grooves 18 are formed in the front end face and the rear end face of the first gear 3 and the second gear 4, the contact area is increased through the radiating grooves 18, and then the first gear 3 and the second gear 4 are enabled to radiate.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A timing gear of a crankshaft of a transmission is characterized in that the timing gear further comprises a mandrel (2) and a gear assembly arranged on the mandrel (2) in a matched mode, the gear assembly consists of a first gear (3), a second gear (4) and a gear sleeve (5) which are integrally formed, the mandrel (2) is fixedly matched and extends into the gear sleeve (5), the peripheral wall of the left end of the mandrel (2) is provided with a limiting outward-extending ring (6) which extends outwards in the radial direction and prevents the first gear (3) from falling off, the middle part of the right end of the mandrel (2) is provided with an outward-protruding ring (7) which protrudes outwards in the radial direction, and a limiting ring (8) which prevents the second gear (4) from falling off is fixedly sleeved on the outward-protruding ring (7);

the limiting outward-extending ring (6) is provided with a first extending ring (9) extending into the first gear (3), the first gear (3) is provided with a first annular groove into which the first extension ring (9) extends, a first sealing pressing ring (10) is arranged in the first annular groove in a sealing manner, a first annular bulge (11) is arranged in the middle of the outer wall of the first sealing pressing ring (10), one end of the first annular bulge (11) is abutted against the first extension ring (9) while the other end is abutted against the first sealing pressing ring (10), a lubricating cavity I (13) is sealed in the annular groove I by a sealing pressing ring I (10), the first lubricating cavity (13) is filled with lubricating oil, the first gear (3) is internally provided with a first lubricating groove (14) communicated with the first lubricating cavity (13), the first lubricating groove (14) penetrates through the surface of the first gear (3) to form a first lubricating opening;

the limiting ring (8) is provided with a second stretching ring extending into the second gear (4), the second gear (4) is provided with a second annular groove for the second stretching ring to extend into, a second sealing pressing ring is arranged in the second annular groove in a sealing manner, the middle of the outer wall of the second sealing pressing ring is provided with a second annular protrusion, the second annular protrusion is externally sleeved with a second spring, one end of the second annular protrusion is abutted against the second stretching ring, the other end of the second annular protrusion is abutted against the second sealing pressing ring, a second lubricating cavity is sealed in the second annular groove by the second sealing pressing ring, the second lubricating cavity is filled with lubricating oil, the second gear (4) is internally provided with a second lubricating groove communicated with the second lubricating cavity, and the second lubricating groove penetrates through the surface of the second gear (4) to form a second lubricating port.

2. A transmission crankshaft timing gear according to claim 1, characterized in that the front end of said first annular projection (11) is directed into the first projecting ring (9) and the front end of said second annular projection is directed into the second projecting ring.

3. The transmission crankshaft timing gear according to claim 1, characterized in that a sealing rubber sleeve (15) is respectively sleeved between the first sealing pressing ring (10) and the second sealing pressing ring and between the first gear (3) and the second gear (4) in a sliding manner.

4. A transmission crankshaft timing gear according to claim 1, characterized in that a sealing connection sleeve (16) is sealingly connected between said first (9) and second (4) protruding rings and said first (3) and second (4) gears, respectively.

5. A transmission crankshaft timing gear according to claim 1, characterized in that a bushing (17) is provided between the gear assembly and the spindle (2).

6. The transmission crankshaft timing gear of claim 1, characterized in that a plurality of heat dissipation grooves (18) are formed on the front and rear end surfaces of the first gear (3) and the second gear (4).