CN114658824A

CN114658824A - Spliced combined gearbox gear

Info

Publication number: CN114658824A
Application number: CN202210494945.8A
Authority: CN
Inventors: 陈奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-06-24
Also published as: WO2023216340A1

Abstract

The invention discloses a spliced combined gearbox gear, which comprises a gear, wherein a plurality of front pin holes which are conical and penetrate through the rear end face of the gear are formed in the front end face of the gear; the front pin hole and the rear pin hole of the gear are respectively inserted with a conical front positioning pin and a conical rear positioning pin, the rear end surface of the front positioning pin and the front end surface of the rear positioning pin are respectively provided with a front stud and a rear stud, the rear stud and the front stud respectively extend out of the front end surface and the rear end surface of the gear and penetrate through a stop washer to be screwed with a fastening nut, and the stop washer is clamped between the fastening nut and the end surface of the gear.

Description

Spliced combined gearbox gear

Technical Field

The invention relates to the technical field of gearbox gears, in particular to a spliced combined gearbox gear.

Background

At present, a gearbox is a gear box for changing a transmission ratio and a movement direction, is a device for changing a rotating speed ratio and a movement direction, is widely applied to automobiles, tractors, ships, machine tools and various machines, and is used for changing torque, rotating speed and movement direction transmitted from a driving shaft to a driven shaft according to different working conditions. The change of the rotating speed in the gear box is mainly realized based on the gear transmission of different specifications, the gear is generally installed and fixed on a transmission shaft, an input shaft or an output shaft, some gears are fixedly connected with the rotating shaft through a key groove structure, but the key grooves are not tightly matched, so that the problem that the gears are separated from the rotating shaft can occur, and therefore some gears and the rotating shaft are integrally manufactured, namely the gear with the shaft is manufactured, but when the gear is worn and needs to be replaced, the rotating shaft also needs to be replaced, and the replacement cost is high; therefore, the gear thermal sleeve is fixed on the rotating shaft, so that the problem of separation cannot occur, and meanwhile, when the gear needs to be replaced, the gear only needs to be replaced; however, the gear of the hot jacket is replaced, and corresponding problems exist: the gear of the thermal sleeve is difficult to disassemble on the rotating shaft.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a splicing combined type gearbox gear, wherein the gear is combined by an inner ferrule for a shrink fit and an outer gear ring in transmission connection, when teeth on the gear are worn and need to be replaced, only the outer gear ring needs to be replaced, and the outer gear ring is convenient and quick to disassemble and assemble.

In order to realize the purpose, the technical scheme adopted by the invention is as follows:

a spliced combined gearbox gear comprises a gear, wherein a plurality of front pin holes which are conical and penetrate through the rear end face of the gear are formed in the front end face of the gear, a plurality of rear pin holes which are conical and penetrate through the front end face of the gear are formed in the rear end face of the gear, an annular cutting groove communicated with the front pin holes and the rear pin holes is formed in the gear, and the gear is divided into an inner ring a and an outer gear ring b by the annular cutting groove; the front pin hole and the rear pin hole of the gear are respectively inserted with a conical front positioning pin and a conical rear positioning pin, the rear end surface of the front positioning pin and the front end surface of the rear positioning pin are respectively provided with a front stud and a rear stud, the rear stud and the front stud respectively extend out of the front end surface and the rear end surface of the gear and penetrate through a stop washer to be screwed with a fastening nut, and the stop washer is clamped between the fastening nut and the end surface of the gear.

Preferably, the central axis of the front pin hole and the central axis of the rear pin hole on the gear are both positioned in the annular cutting groove of the gear, and the central axes of the annular cutting groove and the gear are on the same straight line; the front pin holes and the rear pin holes are at least two, the number of the front pin holes is equal to that of the rear pin holes, and the front pin holes and the rear pin holes are uniformly distributed in an annular mode around the central axis of the gear.

Preferably, the taper angle of the inner wall of the front pin hole on the gear is equal to the taper angle of the outer wall of the front positioning pin, the taper angle of the inner wall of the rear pin hole is equal to the taper angle of the outer wall of the rear positioning pin, and the lengths of the rear positioning pin and the front positioning pin are both smaller than the thickness of the gear.

Preferably, a rear limiting insertion hole and a front limiting insertion hole which are in a regular hexagonal shape are formed in the rear end face of the rear positioning pin and the front end face of the front positioning pin respectively.

Preferably, the length of the rear positioning pin is equal to the length of the front positioning pin.

Preferably, the diameter of the inner wall of the front end of the front pin hole is larger than that of the inner wall of the rear end of the front pin hole; the diameter of the inner wall of the front end of the rear pin hole is smaller than that of the inner wall of the rear end.

Preferably, the stop gasket comprises a main gasket in a shape like a Chinese character 'shan', the middle part of the main gasket is inserted and sleeved on the front stud or the rear stud, the two ends of the main gasket are bent and formed with arc-shaped inserting pieces, and the inserting pieces are inserted and connected in annular cutting grooves on the two sides of the front stud or the rear stud; the middle part of the main gasket is formed with a plurality of stop lugs, the fastening nut adopts an outer hexagon nut, and the stop lugs are bent and then abut against the outer side wall of the fastening nut.

The invention has the beneficial effects that: the gear of the gearbox is combined by the inner ring which is used for heat sleeve and the outer gear ring which is connected in a transmission way, when the gear on the gear is worn and needs to be replaced, only the outer gear ring needs to be replaced, and the outer gear ring is convenient and quick to disassemble and assemble.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a side view, partially in section, of the present invention.

In the figure: 1. a gear; 11. a front pin hole; 12. a rear pin hole; 13. annular grooving; a. an inner ferrule; b. an outer ring gear; 2. a front locating pin; 21. a front stud; 22. a front limiting jack; 3. a rear positioning pin; 31. a rear stud; 32. a rear limiting jack; 4. fastening a nut; 5. a stopper spacer; 51. a main gasket; 511. inserting sheets; 512. stopping the support lug.

Detailed Description

The embodiment is as follows: as shown in fig. 1 to 4, a splicing combination type gearbox gear comprises a gear 1, wherein a plurality of front pin holes 11 which are conical and penetrate through the rear end face of the gear 1 are formed in the front end face of the gear 1, a plurality of rear pin holes 12 which are conical and penetrate through the front end face of the gear 1 are formed in the rear end face of the gear 1, an annular cutting groove 13 communicated with the front pin holes 11 and the rear pin holes 12 is formed in the gear 1, and the annular cutting groove 13 divides the gear 1 into an inner ring a and an outer gear ring b; the front pin hole 11 and the rear pin hole 12 of the gear 1 are respectively inserted with a conical front positioning pin 2 and a conical rear positioning pin 3, the rear end surface of the front positioning pin 2 and the front end surface of the rear positioning pin 3 are respectively provided with a front stud 21 and a rear stud 31, the rear stud 31 and the front stud 21 respectively extend out of the front end surface and the rear end surface of the gear 1 and penetrate through a stop washer 5 to be screwed with a fastening nut 4, and the stop washer 5 is clamped between the fastening nut 4 and the end surface of the gear 1.

The central axis of the front pin hole 11 and the central axis of the rear pin hole 12 on the gear 1 are both positioned in the annular cutting groove 13 of the gear 1, and the central axes of the annular cutting groove 13 and the gear 1 are on the same straight line; the number of the front pin holes 11 and the number of the rear pin holes 12 are at least two, the number of the front pin holes 11 is equal to that of the rear pin holes 12, and the front pin holes 11 and the rear pin holes 12 are uniformly distributed in an annular shape around the central axis of the gear 1.

The taper angle of the inner wall of a front pin hole 11 on the gear 1 is equal to the taper angle of the outer wall of the front positioning pin 2, the taper angle of the inner wall of a rear pin hole 12 is equal to the taper angle of the outer wall of the rear positioning pin 3, and the lengths of the rear positioning pin 3 and the front positioning pin 2 are both smaller than the thickness of the gear 1.

And a rear limiting jack 32 and a front limiting jack 22 in a regular hexagonal shape are respectively formed on the rear end surface of the rear positioning pin 3 and the front end surface of the front positioning pin 2.

The length of the rear positioning pin 3 is equal to that of the front positioning pin 2.

The diameter of the inner wall of the front end of the front pin hole 11 is larger than that of the inner wall of the rear end; the diameter of the inner wall of the front end of the rear pin hole 12 is smaller than that of the inner wall of the rear end.

The stop washer 5 comprises a main washer 51 in a shape like a Chinese character 'shan', the middle part of the main washer 51 is inserted and sleeved on the front stud 21 or the rear stud 31, two ends of the main washer 51 are bent to form arc-shaped inserting pieces 511, and the inserting pieces 511 are inserted and connected in annular cutting grooves 13 on two sides of the front stud 21 or the rear stud 31; a plurality of stop lugs 512 are formed in the middle of the main gasket 51, the fastening nut 4 is an outer hexagon nut, and the stop lugs 512 are bent and abut against the outer side wall of the fastening nut 4.

The working principle is as follows: the invention is a splicing combined type gearbox gear, the main parts of the gearbox gear are an inner ring a and an outer gear ring b, the outer gear ring b is used for transmission connection, the inner ring a is used for hot sleeve fixation on a rotating shaft, the main abrasion part of a gear 1 in the gearbox is arranged on the teeth of the gear 1, or the teeth of the gear 1 which is broken are mainly arranged on the gear 1, when in replacement, only the outer gear ring b needs to be replaced, and two groups of positioning pins (a front positioning pin 2 and a rear positioning pin 3) which are conical and have opposite directions are adopted between the outer gear ring b and the inner ring a and are matched with a thread structure to be positioned and fixed together; when the outer gear ring b is disassembled, the outer gear ring b can be taken down from the inner ring a only by disassembling the fastening nut 4 and taking down the front positioning pin 2 and the rear positioning pin 3, and the outer gear ring b is convenient and fast to disassemble and replace.

The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.

Claims

1. A split-combination gearbox gear comprising a gear (1), characterized in that: a plurality of front pin holes (11) which are conical and penetrate through the rear end face of the gear (1) are formed in the front end face of the gear (1), a plurality of rear pin holes (12) which are conical and penetrate through the front end face of the gear (1) are formed in the rear end face of the gear (1), an annular cutting groove (13) communicated with the front pin holes (11) and the rear pin holes (12) is formed in the gear (1), and the gear (1) is divided into an inner ring (a) and an outer gear ring (b) by the annular cutting groove (13); the front pin hole (11) and the rear pin hole (12) of the gear (1) are respectively inserted with a conical front positioning pin (2) and a conical rear positioning pin (3), the rear end face of the front positioning pin (2) and the front end face of the rear positioning pin (3) are respectively provided with a front stud (21) and a rear stud (31), the rear stud (31) and the front stud (21) respectively extend out of the front end face and the rear end face of the gear (1) and penetrate through a stop washer (5) to be connected with a fastening nut (4) in a threaded manner, and the stop washer (5) is clamped between the fastening nut (4) and the end face of the gear (1).

2. A split compound transmission gear according to claim 1, wherein: the central axis of a front pin hole (11) and the central axis of a rear pin hole (12) on the gear (1) are both positioned in an annular cutting groove (13) of the gear (1), and the central axes of the annular cutting groove (13) and the gear (1) are on the same straight line; the front pin holes (11) and the rear pin holes (12) are at least two, the number of the front pin holes (11) is equal to that of the rear pin holes (12), and the front pin holes (11) and the rear pin holes (12) are uniformly distributed in an annular shape around the central axis of the gear (1).

3. A split compound transmission gear according to claim 2, wherein: the taper angle of the inner wall of a front pin hole (11) on the gear (1) is equal to the taper angle of the outer wall of the front positioning pin (2), the taper angle of the inner wall of a rear pin hole (12) is equal to the taper angle of the outer wall of the rear positioning pin (3), and the lengths of the rear positioning pin (3) and the front positioning pin (2) are both smaller than the thickness of the gear (1).

4. A split compound transmission gear according to claim 3 wherein: and a regular hexagonal rear limiting jack (32) and a regular hexagonal front limiting jack (22) are respectively formed on the rear end surface of the rear positioning pin (3) and the front end surface of the front positioning pin (2).

5. A split compound transmission gear according to claim 4 wherein: the length of the rear positioning pin (3) is equal to that of the front positioning pin (2).

6. A split compound transmission gear according to claim 3 wherein: the diameter of the inner wall of the front end of the front pin hole (11) is larger than that of the inner wall of the rear end; the diameter of the inner wall of the front end of the rear pin hole (12) is smaller than that of the inner wall of the rear end.

7. A split compound transmission gear according to claim 1, wherein: the stop gasket (5) comprises a main gasket (51) in a shape like a Chinese character 'shan', the middle part of the main gasket (51) is inserted and sleeved on the front stud (21) or the rear stud (31), two ends of the main gasket (51) are bent and formed with arc-shaped inserting pieces (511), and the inserting pieces (511) are inserted and connected in annular cutting grooves (13) on two sides of the front stud (21) or the rear stud (31); a plurality of stop lugs (512) are formed in the middle of the main gasket (51), the fastening nut (4) adopts an outer hexagon nut, and the stop lugs (512) are bent and then abut against the outer side wall of the fastening nut (4).