CN212003566U - Speed-regulating type hydraulic coupler gear oil pump - Google Patents
Speed-regulating type hydraulic coupler gear oil pump Download PDFInfo
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- CN212003566U CN212003566U CN202020157415.0U CN202020157415U CN212003566U CN 212003566 U CN212003566 U CN 212003566U CN 202020157415 U CN202020157415 U CN 202020157415U CN 212003566 U CN212003566 U CN 212003566U
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Abstract
The utility model discloses a speed-regulating type hydraulic coupler gear oil pump, which comprises a pump shell, a pump cover, a pump bearing, a driven oil pump gear, a driving oil pump gear and a driving gear; the pump shell and the pump cover form a cavity, two ends of the driven oil pump gear and two ends of the driving oil pump gear are respectively installed in the cavity through pump bearings, and the driving oil pump gear and the driven oil pump gear form a gear pair so as to divide the cavity into an oil suction cavity and an oil discharge cavity which are opposite; the driving gear is mounted on the shaft of the driving oil pump gear out of the pump housing. The utility model discloses simplify speed governing type hydraulic coupling fuel feed pump structure and improved its flow, can satisfy high-power speed governing type hydraulic coupling's needs.
Description
Technical Field
The utility model relates to a hydraulic drive technical field, concretely relates to speed governing type fluid coupling gear oil pump.
Background
The speed-regulating hydraulic coupler is a hydraulic element capable of regulating output speed and using liquid as working medium to connect prime mover with working machine. It can start the prime motor in no-load condition, and under the condition of constant input rotation speed it can very conveniently implement stepless speed regulation of working machine and change output power.
The working medium of the speed-regulating hydraulic coupler is mainly 6# hydraulic transmission oil and 32# turbine oil, and the oil supply mode is mainly that the oil is supplied by a cycloid rotor pump. The speed-regulating hydraulic coupler cycloid rotor pump is driven by a gear arranged on an input shaft of the coupler, working oil in a coupler box body is pumped out, the working oil is cooled by a cooler and then enters a coupler working cavity to carry out power transmission, heat generated in the working process of a rotating part is taken away, a bearing is lubricated, and the oil flow required by the speed-regulating hydraulic coupler is in direct proportion to the transmission power.
Fig. 1(a) and (b) are schematic structural diagrams of a conventional cycloid rotor pump, which mainly include a pump housing 1a, a pump cover 2a, an eccentric sleeve 3a, an outer rotor 4a, an inner rotor 5a, a pump cover plate 6a, a pump bearing 7a, a pump pin 8a, a pump spacer 9a, a pump partition plate 10a, a pump shaft 11a, and a drive gear 12 a.
The pump bearing 7a is used for supporting the oil pump working assembly; the inner rotor and the outer rotor are arranged in the inner cavity of the pump shell with eccentricity e. The outer rotor 4a has one more tooth than the inner rotor 5a, when the gear on the input shaft of the speed-regulating hydraulic coupler drives the driving gear 12a to rotate, the inner rotor 5a is a driving tooth, the outer rotor 4a is a driven tooth, and because of different tooth numbers, relative motion exists between the outer rotor and the driven tooth, and the rotating speed of the outer rotor 4a is one tooth slower than that of the inner rotor 5a per circle. The tooth profile of the inner rotor 5a and the tooth profile of the outer rotor 4a are a pair of conjugate cycloid curves, which can ensure that when the oil pump operates, no matter where the inner rotor and the outer rotor rotate, all teeth are in a meshing state, namely, one point on the tooth profile curve of each tooth of the inner rotor 5a is always in contact with the tooth profile curve of the outer rotor 4a, so that working cavities with the same number as the tooth number of the inner rotor 5a are formed between the inner rotor and the outer rotor. The volumes of the working cavities are constantly changed along with the rotation of the rotor, when the rotor rotates clockwise, the volumes of the working cavities on the right side of the central line of the inner rotor and the outer rotor are changed from small to large, so that local vacuum is formed, and hydraulic oil is sucked from the oil inlet; the volumes of the working chambers on the left sides of the central lines of the inner rotor and the outer rotor are reduced from large to small, and hydraulic oil is discharged from the oil outlet. That is, one tooth of the inner rotor 5a sucks and discharges oil once per rotation, and one working cycle is completed. The inner rotor 5a has n teeth, and oil suction and oil discharge circulation of the n teeth is completed every time the inner rotor rotates one circle.
The speed-regulating type hydraulic coupler cycloid rotor pump is internally meshed and rotates in the same direction, only one tooth is different, the relative sliding speed of the tooth profile position between the two rotors is small, and the friction and the abrasion of the tooth surface of an oil pump are small; meanwhile, the pump shell 1a has a large oil distribution angle, oil absorption and oil discharge are sufficient, the phenomenon of air suction is avoided, the speed-regulating type coupler cycloid rotor pump runs at the maximum input rotating speed of 2000r/min, the pressure of an oil outlet is lower than 0.63MPa, and the speed-regulating type coupler cycloid rotor pump is stable in operation, long in service life and low in noise.
However, the displacement of the speed-regulating type hydraulic coupling cycloid rotor pump depends on the number of teeth, the tooth shape and the tooth width of the inner rotor, the eccentricity and the rotating speed of the inner rotor and the outer rotor, the speed-regulating type hydraulic coupling cycloid rotor pump is usually used at the rotating speed of less than 2000r/min, and the oil flow of the oil pump is less than 300L/min. At present, speed-regulating type hydraulic couplers are increasingly applied to high-power and high-rotation-speed equipment, and the flow rate of working oil of the speed-regulating type hydraulic couplers is in direct proportion to the transmission power, so that the cycloid rotor pump of the speed-regulating type hydraulic couplers cannot meet the flow rate and pressure requirements of the high-power speed-regulating type hydraulic couplers. In addition, when the rotating speed is higher than 2000r/min and the oil outlet pressure is higher than 0.63MPa, the noise and vibration of the cycloid rotor pump of the speed-regulating type hydraulic coupler are obviously increased, the oil pump is easy to fail, and the safe operation of the speed-regulating type hydraulic coupler is influenced.
Disclosure of Invention
The invention aims to provide a gear oil pump of a speed-regulating type hydraulic coupler under the condition of not changing the overall dimension of the speed-regulating type hydraulic coupler, simplify the structure of an oil supply pump of the speed-regulating type hydraulic coupler, improve the flow rate of the oil supply pump and meet the requirement of a high-power speed-regulating type hydraulic coupler.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a speed-regulating type hydraulic coupler gear oil pump comprises a pump shell, a pump cover, a pump bearing, a driven oil pump gear, a driving oil pump gear and a driving gear; the pump shell and the pump cover form a cavity, two ends of the driven oil pump gear and two ends of the driving oil pump gear are respectively installed in the cavity through pump bearings, and the driving oil pump gear and the driven oil pump gear form a gear pair so as to divide the cavity into an oil suction cavity and an oil discharge cavity which are opposite; the driving gear is mounted on the shaft of the driving oil pump gear out of the pump housing.
Furthermore, the driving oil pump gear and the driven oil pump gear are a pair of external meshing involute gears with the same tooth number and module.
Further, the installation positions of the driving oil pump gear and the driven oil pump gear can be changed.
As an improvement of the utility model, the axle center of initiative oil pump gear or driven oil pump gear be provided with the through-hole.
The utility model discloses compare with speed governing type fluid coupling cycloid impeller pump, its beneficial effect lies in:
(1) simple structure and convenient installation. The cycloidal rotor pump consists of 6 parts, and the cycloidal rotor pump consists of 12 parts, so that the structure is complex, and the installation process is multiple.
(2) Small size and large flow. Under the same external dimension and the same rotating speed, the oil flow of the oil pump is 2 times of that of the cycloid rotor pump, and the highest working rotating speed is 1.5 times of that of the cycloid rotor pump.
(3) Easy processing and low cost. The manufacturing process of the main parts of the gear hobbing machine is mature, only ordinary gear machining equipment is used, and the main parts of the gear hobbing machine can be processed by a forming cutter through a driving oil pump gear and a driven oil pump gear.
(4) The precision is high, and the system operation is stable. The invention adopts the gear oil pump technology, has few components, is easy to control the production process, adopts the gear as the transmission friction pair, and has high and stable efficiency.
(5) The working temperature is high. The lubricating oil is supplied by oil discharge pressure, and the lubricating oil on the pump cover side is discharged back to the oil tank through the shaft hole of the driven oil pump gear, so that the temperature of a pump bearing is slightly higher than that of the oil, and the high-temperature (80-120 ℃) working requirement of the speed-regulating type hydraulic coupler is met.
Drawings
FIGS. 1(a) and (b) are schematic structural diagrams of a cycloidal rotor pump of a speed-regulating type hydraulic coupling in the prior art;
fig. 2(a) and (b) are schematic structural diagrams of the gear oil pump of the speed-regulating type fluid coupling provided by the embodiment;
fig. 3 is a working schematic diagram of the gear oil pump of the speed-regulating fluid coupling provided in the embodiment;
description of reference numerals: 1-pump housing; 2-pump cover; 3-pump bearings; 4-driven oil pump gear; 5-driving oil pump gear; 6-driving the gear.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 2, the gear oil pump of the speed-adjustable fluid coupling provided by the embodiment mainly includes a pump housing 1, a pump cover 2, a pump bearing 3, a driven oil pump gear 4, a driving oil pump gear 5, and a driving gear 6.
The pump housing 1 and the pump cover 2 form a cavity for mounting the gear, two ends of the driven oil pump gear 4 and two ends of the driving oil pump gear 5 are respectively mounted in the cavity through the pump bearings 3, and the driving oil pump gear 5 and the driven oil pump gear 4 form a gear pair, so that the cavity is divided into an oil suction cavity and an oil discharge cavity which are opposite. The drive gear 6 is mounted on the shaft of the drive oil pump gear 5 which extends out of the pump housing 1.
Referring to fig. 3, when the gear oil pump of the speed-adjustable hydraulic coupler works, the driving gear 6 of the oil pump is driven by a gear installed on an input shaft of the speed-adjustable hydraulic coupler, the driving gear 6 drives the driving oil pump gear 5 to rotate, the driving oil pump gear 5 drives the driven oil pump gear 4 through gear transmission, tooth grooves of the driving oil pump gear 5 and the driven oil pump gear 4 are filled with oil in an oil suction cavity, the oil enters an oil discharge cavity along with the rotation of the gear, the oil in the tooth grooves is discharged when the gear is meshed, and the circulation is continuous, so that the liquid flow and pressurization are realized.
More specifically, the driving oil pump gear 5 and the driven oil pump gear 4 are a pair of external-meshing involute gears with the same number of teeth and module, and the installation positions can be changed. The driving oil pump gear 5, the driven oil pump gear 4, the pump cover 2, the pump shell 1 and the pump bearing 3 form an oil suction cavity and an oil discharge cavity, when the gear oil pump of the speed-regulating type hydraulic coupler operates, the driving oil pump gear 5 and the driven oil pump gear 4 suck oil from the oil suction cavity, the oil moves to the oil discharge cavity along with the rotation of the tooth grooves, when the gears are meshed, the volume of the tooth grooves is gradually reduced in the oil discharge cavity area, the oil in the tooth grooves is gradually discharged, the volume of the tooth grooves is gradually increased in the oil suction cavity area, and the oil is gradually filled into the tooth grooves, so that the oil suction and the oil discharge of the gear oil.
Preferably, the axle center of the driven oil pump gear 4 is provided with a through hole, so that the lubricating oil on the pump cover side is discharged back to the oil tank through the through hole on the axle center of the driven oil pump gear 4, the temperature of the pump bearing 3 is slightly higher than that of the oil liquid, and the high-temperature (80-120 ℃) working requirement of the speed-regulating type hydraulic coupler is met.
The following describes the installation and operation of the gear oil pump of the speed-governing type fluid coupling provided in the present embodiment.
Mounting of
(1) When in installation, the parallelism and the depth of the axes of the gear installation cavities of the two oil pumps in the pump shell 1 are checked, and the parallelism error is required to be within 0.03 mm.
(2) The mounting position of a driving oil pump gear 5 shaft is determined according to the rotation direction of the hydraulic coupler, the inner side pump bearing 3 is firstly installed, then the driving oil pump gear 5 shaft, a driven oil pump gear 4 shaft and the outer side pump bearing 3 are installed, the pump cover 2 is covered, and bolts on the pump cover are screwed according to the screwing torque requirement.
(3) And selecting the driving gear 6 according to the transmission power of the speed-regulating type hydraulic coupler, installing the driving gear on the pump shaft, and installing and screwing the self-locking nut.
(4) The driving gear is driven by the disk, so that the rotation is required to be flexible and has no abnormal sound.
(5) When the speed-regulating type hydraulic coupler is installed, the matched pump driving gear is installed on the input shaft.
(6) The pump shell with the gear oil pump is arranged on the box body of the speed-regulating type hydraulic coupler.
Use of
(1) And after the gear oil pump and the pump shell of the speed-regulating type hydraulic coupler are installed, connecting corresponding pipelines.
(2) Enough 32# turbine oil or 6# hydraulic transmission oil is added into the speed-regulating type coupler box body.
(3) The rotation direction and the driving device of the speed-regulating type hydraulic coupler are checked, and related instruments and meters are checked, so that the accuracy is ensured.
(4) The driving motor is inching to enable the rotating direction to be consistent with the rotating direction of the speed-regulating type hydraulic coupler.
(5) And starting the motor to enable the motor to run together with the speed-regulating type hydraulic coupler.
(6) The pressure of the working oil of the speed-regulating hydraulic coupler is adjusted to meet the system requirement.
(7) The temperature of the working oil is increased to 110% of the design value, the pressure of the working oil and the temperature of a pump cover of the gear oil pump are checked, and the temperature of the pump cover is not higher than the temperature of the working oil by 20 ℃.
(8) And after the inspection and the test are qualified, the product can be put into use.
The following table shows technical parameters of the gear oil pump of the speed-adjustable fluid coupling provided in this embodiment.
It can be seen from the above table that the speed regulation type hydraulic coupling gear oil pump working oil flow of this application is more than 300L/min, through the number of teeth of transform drive gear, the number of teeth of transform corresponding pump drive gear simultaneously makes this gear oil pump's operating speed change to satisfy the needs of high-power speed regulation type hydraulic coupling transmission power. Therefore, the application of the pump has obvious advantages compared with a cycloid rotor pump on a high-power speed-regulating type hydraulic coupler.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. A speed-regulating type hydraulic coupler gear oil pump is characterized in that: the pump comprises a pump shell (1), a pump cover (2), a pump bearing (3), a driven oil pump gear (4), a driving oil pump gear (5) and a driving gear (6); the pump shell (1) and the pump cover (2) form a cavity, two ends of the driven oil pump gear (4) and two ends of the driving oil pump gear (5) are respectively installed in the cavity through pump bearings (3), and the driving oil pump gear (5) and the driven oil pump gear (4) form a gear pair so as to divide the cavity into an oil suction cavity and an oil discharge cavity which are opposite; the driving gear (6) is arranged on a shaft of the driving oil pump gear (5) extending out of the pump shell (1).
2. The gear oil pump of the speed governing type fluid coupling according to claim 1, wherein: the driving oil pump gear (5) and the driven oil pump gear (4) are a pair of external meshing involute gears with the same tooth number and module.
3. The gear oil pump of the speed governing type fluid coupling according to claim 2, wherein: the installation positions of the driving oil pump gear (5) and the driven oil pump gear (4) can be exchanged.
4. A variable speed fluid coupling gear oil pump according to any one of claims 1 to 3, wherein: and a through hole is formed in the axis of the driving oil pump gear (5) or the driven oil pump gear (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157415.0U CN212003566U (en) | 2020-02-10 | 2020-02-10 | Speed-regulating type hydraulic coupler gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157415.0U CN212003566U (en) | 2020-02-10 | 2020-02-10 | Speed-regulating type hydraulic coupler gear oil pump |
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| Publication Number | Publication Date |
|---|---|
| CN212003566U true CN212003566U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020157415.0U Active CN212003566U (en) | 2020-02-10 | 2020-02-10 | Speed-regulating type hydraulic coupler gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003566U (en) |
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2020
- 2020-02-10 CN CN202020157415.0U patent/CN212003566U/en active Active
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