CN218030428U

CN218030428U - Gear motor with double driven teeth and double rotation directions and high rotation speed

Info

Publication number: CN218030428U
Application number: CN202222326699.3U
Authority: CN
Inventors: 张颖; 郑金朝; 花根
Original assignee: Hefei Changyuan Hydraulics Co Ltd
Current assignee: Hefei Changyuan Hydraulics Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-13
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a gear motor with double driven gears rotating in double directions to high rotating speed, which comprises a shell and a rear cover, wherein one end of the shell is provided with a gear installation cavity, a driving gear, a driven gear I and a driven gear II are arranged in the gear installation cavity, and the driven gear I and the driven gear II are symmetrically arranged and are simultaneously meshed with the driving gear; the rear cover is provided with a first oil inlet and outlet, a second oil inlet and outlet, a first oil way, a second oil way, a third oil way and a fourth oil way. The gear motor adopts a double-slave-tooth structure, two slave teeth are symmetrical relative to a master tooth, double oil supply amount in the same space is realized, radial force borne by a driving gear is balanced, and the service life of the gear pump is prolonged; the gear motor is integrally cylindrical, so that the integral material is saved, the installation mode is that clamping grooves on two sides of a pump body are installed in a clamping mode, and the installation space is greatly saved in the axial direction and the radial direction; through setting up the oil blanket that uses the oil blanket seat as the skeleton, star type sealing washer as the sealing material, can bear higher backpressure, higher rotational speed, be difficult to lead to the oil blanket to be washed out by high-pressure oil.

Description

Gear motor with double driven teeth and double rotation directions and high rotation speed

Technical Field

The utility model relates to a hydraulic power equipment technical field, concretely relates to two from two rotations of tooth to high rotational speed gear motor.

Background

The hydraulic motor is an actuator of the hydraulic system, which converts the hydraulic pressure energy provided by the hydraulic pump into mechanical energy (torque and rotational speed) of its output shaft. Liquids are the medium that transmits forces and motion. Hydraulic motors, also known as oil motors, are mainly used in injection molding machines, ships, cranes, engineering machines, construction machines, coal mine machines, mining machines, metallurgical machines, marine machines, petrochemical machines, port machines, and the like.

In the prior art, a conventional hydraulic motor generally has a spigot, a mounting hole, a threaded oil port or a flange oil port, and has an irregular shape, so that the conventional hydraulic motor occupies a mounting space; meanwhile, in the conventional hydraulic motor in the prior art, one driving gear and one driven gear are adopted, radial force is required to be applied to the driving gear in the working process, the service life of the gear motor is possibly shortened, and in addition, the conventional gear motor is mostly sealed by a rotary shaft lip-shaped sealing ring, so that the pressure born by the sealing is small, and the gear motor cannot operate under the conditions of high rotating speed and high back pressure.

Disclosure of Invention

For overcoming prior art's defect, the utility model aims to provide a two from the two rotatory gear motor to high rotational speed of tooth to solve the problem that initiative gear wheel working process needs to receive radial force.

Therefore, the utility model provides a gear motor with double driven gears rotating in double directions to high rotation speed, which comprises a shell and a rear cover, wherein one end of the shell is provided with a gear installation cavity, a driving gear, a driven gear I and a driven gear II are arranged in the gear installation cavity, and the driven gear I and the driven gear II are symmetrically arranged and are simultaneously meshed with the driving gear; the rear cover is provided with a first oil inlet and outlet, a second oil inlet and outlet, a first oil way, a second oil way, a third oil way and a fourth oil way; the first oil inlet and outlet is communicated to the gear installation cavity through the first oil way and the second oil way, and the second oil inlet and outlet is communicated to the gear installation cavity through the third oil way and the fourth oil way.

Furthermore, the first oil way and the second oil way are arranged in a central symmetry manner and are communicated through a first communication cavity channel which is communicated with the first oil inlet and outlet; the third oil way and the fourth oil way are arranged in a central symmetry mode and are communicated through a second communication cavity channel, and the second communication cavity channel is communicated with the second oil inlet and outlet.

Furthermore, the first communicating cavity channel and the second communicating cavity channel are blind holes, the outer ends of the blind holes are provided with plugs, and the blind holes extend along the radial direction of the rear cover.

Furthermore, the shell and the rear cover are cylindrical, a pair of installation clamping grooves are formed in the circumferential surface of the shell, and the installation clamping grooves extend along the axial direction of the shell.

Furthermore, be equipped with the oil blanket between the pivot of driving gear and the casing, the oil blanket includes oil seal seat and star type sealing washer.

Further, a first reversing oil way and a second reversing oil way are arranged on the shell, and one ends of the first reversing oil way and the second reversing oil way are communicated with the gear installation cavity; the other ends of the first reversing oil way and the second reversing oil way are communicated with each other and extend to the position of the oil seal seat, a first one-way valve is arranged in the first reversing oil way, and a second one-way valve is arranged in the second reversing oil way.

Furthermore, the first check valve and the second check valve are respectively provided with a plug and a ball.

The utility model provides a gear motor with double slave teeth rotating to high rotation speed, which adopts a double slave tooth structure, two slave teeth are symmetrical relative to the master tooth, double oil supply amount in the same space is realized, and the radial force borne by the driving gear wheel is balanced to prolong the service life of the gear pump; the gear motor is integrally cylindrical, so that the integral material is saved, the installation mode is that clamping grooves on two sides of a pump body are installed in a clamping mode, and compared with the motor with the same specification, the installation space is greatly saved in the axial direction and the radial direction; by arranging the oil seal with the oil seal seat as a framework and the star-shaped sealing ring as a sealing material, higher back pressure can be borne, and the oil seal is not easy to be washed down by high-pressure oil; through setting up four check valves, any spiral downward homoenergetic realizes that the gear stabilizes output hydraulic medium, and the switching-over is simple easy to operate.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of a gear motor with double driven teeth and double rotation directions at high rotation speed according to the present invention;

fig. 2 is a top view of the double-driven-tooth double-rotation-direction high-rotation-speed gear motor of the present invention;

FIG. 3 is a right side view of the dual slave tooth dual direction high speed gear motor of the present invention;

FIG. 4 is a sectional view of the gear motor with dual driven gears rotating at high speed in the F-F direction;

FIG. 5 isbase:Sub>A sectional view of the gear motor with double driven teeth rotating at high speed in the direction of A-A according to the present invention;

fig. 6 is a sectional view of the gear motor with double driven teeth rotating in double directions to high rotation speed in the direction from B to B;

FIG. 7 is a C-C sectional view of the gear motor with dual driven gears rotating at high speed;

fig. 8 is a cross-sectional view of the gear motor with double driven teeth rotating to high speed in the direction of D-D according to the present invention;

FIG. 9 is a cross-sectional view of the gear motor with dual driven gears rotating at high speed in the E-E direction;

description of the reference numerals

1. A housing; 2. a rear cover; 3. a driving gear; 4. a first driven gear; 5. a driven gear II; 6. an oil seal seat; 7. a star-shaped sealing ring; 11. installing a clamping groove; 13. a one-way valve I; 14. a second one-way valve; 15. a reversing oil way I; 16. a reversing oil way II; 21. an oil inlet and an oil outlet I; 22. an oil inlet and an oil outlet are formed; 23. a first communicating cavity is formed; 24. a second cavity channel is communicated; 25. a first oil way; 26. an oil path II; 27. an oil way III; 28. and the oil way is four.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 9, the gear motor with double driven gears and double rotation directions at high rotation speed of the present invention comprises a housing 1 and a rear cover 2, wherein one end of the housing 1 is provided with a gear installation cavity, a driving gear 3, a first driven gear 4 and a second driven gear 5 are arranged in the gear installation cavity, the first driven gear 4 and the second driven gear 5 are symmetrically arranged and are simultaneously engaged with the driving gear 3; the rear cover 2 is provided with a first oil inlet/outlet port 21 and a second oil inlet/outlet port 22 which are communicated with an external oil path, the rear cover 2 is further provided with a first oil path 25, a second oil path 26, a third oil path 27 and a fourth oil path 28, the first oil inlet/outlet port 21 is communicated with the gear installation cavity through the first oil path 25 and the second oil path 26, and the second oil inlet/outlet port 22 is communicated with the gear installation cavity through the third oil path 27 and the fourth oil path.

Specifically, as shown in fig. 6 to 8, the first oil path 25 and the second oil path 26 are arranged in a central symmetry manner, and are communicated with each other through the first communication channel 23, and the first oil path 25 and the second oil path 26 are connected to the first oil inlet/outlet port 21 through the first communication channel 23; the third oil path 27 and the fourth oil path 28 are arranged in a central symmetry mode and are communicated through the second communication cavity channel 24, and the third oil path 27 and the fourth oil path 28 are connected to the second oil inlet and outlet port 22 through the second communication cavity channel 24. The first communicating cavity channel 23 and the second communicating cavity channel 24 comprise blind holes and plugs arranged at the outer ends of the blind holes, and the blind holes extend along the radial direction of the rear cover 2.

When the gear motor works, a hydraulic medium enters the rear cover 2 from the oil inlet/outlet port I21, then enters the gear installation cavity through the communication cavity I23, the oil path I25 and the oil path II 26, then flows into the communication cavity II 24 through the oil path III 27 and the oil path IV 28, and finally flows out from the oil inlet/outlet port II 22 to form a closed-loop oil path. In the process of unidirectional flow of the hydraulic medium, the first driven gear 4 and the second driven gear 5 are driven to synchronously rotate, and then the driving gear 3 is driven to rotate, so that the process of converting the hydraulic pressure energy into the mechanical energy of the output shaft is completed.

The hydraulic medium transmitted by the hydraulic gear motor through one oil inlet is respectively supplied to two meshed gears after being shunted by an oil way cavity channel, and the hydraulic medium transmitted by the gears is integrated and converged to the same oil outlet through the oil way cavity channel. The two pairs of meshing gears share the same oil inlet and outlet, so that the oil supply amount is doubled.

As shown in fig. 1 to 3, the casing 1 and the rear cover 2 are both cylindrical as a whole, a pair of mounting slots 11 is provided on the circumferential surface of the casing 1, the mounting slots 11 extend in the axial direction, and the hydraulic gear motor is installed in a clamping manner with an external connecting piece through the mounting slots 11. This hydraulic motor wholly is cylindric, practices thrift whole material, adopts the draw-in groove clamp type installation, compares in the motor with the specification in the axial with radially all great saving the installation space.

As shown in fig. 4, an oil seal is provided between the rotating shaft of the driving gear 3 and the housing 1, and the oil seal includes an oil seal seat 6 and a star-shaped seal ring 7. The utility model discloses a gear motor is because of its high rotational speed that requires, the performance index of high backpressure, unique seal structure has been adopted, its sealed mode is sealed by traditional rotation axis lip seal, change to and use the oil blanket seat as the skeleton, the star type sealing washer is the integrated configuration of sealing material, the traditional 0.6MPa that can bear of comparing, the backpressure that 3MPa can be born to oil blanket seat 6 structure, the inside star type sealing washer 7 that encircles of oil blanket seat is for winding the structure, abundant assurance gear motor has better ductility under receiving pressure shock, bear higher backpressure, be difficult to lead to the oil blanket to be washed down by high-pressure oil. In addition, compare in traditional seal structure, the linear velocity that this application hydraulic motor's high rotational speed performance required is higher, and the star type sealing washer linear velocity bearing capacity of oil seal seat is superior to ordinary rotation axis lip oil blanket.

As shown in fig. 5 and 9, a first reversing oil path 15 and a second reversing oil path 16 are arranged on the shell 1, and one ends of the first reversing oil path 15 and one ends of the second reversing oil path 16 are communicated with the gear mounting cavity; the other ends of the first reversing oil way 15 and the second reversing oil way 16 extend to the oil seal seat and are communicated with each other, a one-way valve I13 is arranged in the first reversing oil way 15, and a one-way valve II 14 is arranged in the second reversing oil way 16; wherein, the first check valve 13 and the second check valve 14 are respectively provided with a plug and a ball.

When the oil inlet and the oil outlet of the hydraulic motor are interchanged, the oil pressure in the first reversing oil way 15 and the second reversing oil way 16 is instantly increased or reduced, the first check valve 13 and the second check valve 14 are pushed to move, the steering directions of the driving gear 3, the driven gear 4 and the driven gear 5 are also changed, and the first reversing oil way 15 and the second reversing oil way 16 are communicated to complete pressure relief; by arranging the one-way valve I13 and the one-way valve II 14, the situation that pressure oil in a gear cavity cannot be removed when the hydraulic motor is reversed is avoided, the impact of the quick steering of the driving gear 3 on the oil seal seat is relieved, and the service life of the oil seal is prolonged.

The utility model discloses a hydraulic gear motor sets up four check valves in the oil circuit, and different pressure is thrown off or is closed in according to the pipeline, realizes exchanging with the business turn over hydraulic fluid port that the oil blanket is connected one end, and any downward homoenergetic that revolves realizes that the gear stabilizes the output hydraulic medium, and the simple easy operation of switching-over.

The working process of the gear motor with double driven teeth and double rotation directions at high rotation speed of the present invention will be briefly described with reference to the accompanying drawings.

When the oil inlet and the oil outlet of the hydraulic motor are interchanged, the oil pressure in the first reversing oil way 15 and the second reversing oil way 16 is instantly increased or decreased, the first check valve 13 and the second check valve 14 are pushed to move, and the first reversing oil way 15 and the second reversing oil way 16 are communicated to complete pressure relief; the problem that pressure oil in a gear cavity cannot be removed when a hydraulic motor is reversed is avoided, impact on an oil seal seat caused by rapid steering of the driving gear 3 is relieved, and the service life of an oil seal is prolonged.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gear motor with double driven teeth and double rotation directions to high rotation speed is characterized by comprising a shell (1) and a rear cover (2),

one end of the shell (1) is provided with a gear installation cavity, a driving gear (3), a driven gear I (4) and a driven gear II (5) are arranged in the gear installation cavity, and the driven gear I (4) and the driven gear II (5) are symmetrically arranged and are simultaneously meshed with the driving gear (3) in a gear manner;

the rear cover (2) is provided with a first oil inlet/outlet (21), a second oil inlet/outlet (22), a first oil way (25), a second oil way (26), a third oil way (27) and a fourth oil way (28); the first oil inlet and outlet (21) is communicated with the gear installation cavity through the first oil way (25) and the second oil way (26), and the second oil inlet and outlet (22) is communicated with the gear installation cavity through the third oil way (27) and the fourth oil way (28).

2. The gear motor with double driven teeth and double rotation directions at high rotation speed according to claim 1, wherein the first oil passage (25) and the second oil passage (26) are arranged in a central symmetry manner and are communicated through a first communication cavity (23), and the first communication cavity (23) is communicated with the first oil inlet/outlet (21); the oil way III (27) and the oil way IV (28) are arranged in a central symmetry mode, the oil way III and the oil way IV are communicated through a communicating cavity channel II (24), and the communicating cavity channel II (24) is communicated with the oil inlet/outlet port II (22).

3. The double-slave-tooth double-rotation-direction high-rotation-speed gear motor according to claim 2, wherein the first communication channel (23) and the second communication channel (24) are blind holes with plugs mounted at outer ends, and the blind holes extend in the radial direction of the rear cover (2).

4. The double-driven-tooth double-rotation-direction high-rotation-speed gear motor according to claim 1, wherein the housing (1) and the rear cover (2) are cylindrical, and a pair of mounting notches (11) are provided on a circumferential surface of the housing (1), the mounting notches (11) extending in an axial direction of the housing (1).

5. The double-driven-tooth double-rotation-direction high-rotation-speed gear motor according to claim 1, wherein an oil seal is arranged between a rotating shaft of the driving gear (3) and the housing (1), and the oil seal comprises an oil seal seat (6) and a star-shaped sealing ring (7).

6. The double-slave-tooth double-rotation-direction high-rotation-speed gear motor according to claim 5, wherein a first reversing oil path (15) and a second reversing oil path (16) are arranged on the housing (1), and one ends of the first reversing oil path (15) and the second reversing oil path (16) are communicated with the gear installation cavity; the other ends of the first reversing oil way (15) and the second reversing oil way (16) are communicated with each other and extend to the position of the oil seal seat (6), a one-way valve I (13) is arranged in the first reversing oil way (15), and a one-way valve II (14) is arranged in the second reversing oil way (16).

7. The double-slave-tooth double-rotation-direction high-rotation-speed gear motor according to claim 6, wherein the first check valve (13) and the second check valve (14) are respectively provided with a plug and a ball.