CN220748468U - Radial low-pulsation plunger hydraulic pump motor - Google Patents
Radial low-pulsation plunger hydraulic pump motor Download PDFInfo
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- CN220748468U CN220748468U CN202322514191.0U CN202322514191U CN220748468U CN 220748468 U CN220748468 U CN 220748468U CN 202322514191 U CN202322514191 U CN 202322514191U CN 220748468 U CN220748468 U CN 220748468U
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- plunger
- oil
- cylinder body
- pulsation
- hydraulic pump
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- 230000010349 pulsation Effects 0.000 claims abstract description 27
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000010079 rubber tapping Methods 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 125
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Abstract
The utility model discloses a radial low-pulsation plunger hydraulic pump motor which comprises a shell, a cylinder body component, a plunger component and an oil distribution mechanism, wherein the oil distribution mechanism penetrates through the cylinder body component and is communicated with the cylinder body component; the top of each plunger is embedded with a ceramic ball, and the ceramic balls are in rolling contact with the side wall of the shell; according to the utility model, the displacement of the motor is adjusted by changing the number of the plungers, and the maximum volume difference of a single plunger can be controlled to ensure extremely low flow pulsation, so that the effect that the larger the displacement is, the smaller the pulsation is, and the motor is far superior to the traditional motor.
Description
Technical Field
The utility model relates to the field of radial plunger hydraulic motors, in particular to a radial low-pulsation plunger hydraulic pump motor.
Background
A radial plunger hydraulic motor is an actuator in a hydraulic system that converts hydraulic energy provided by a hydraulic pump into mechanical energy output. Since the 20 th century, the development of a hydraulic motor as a hydraulic actuator at home and abroad is faster, and particularly, a radial plunger type high-speed hydraulic pump motor is mostly used in metallurgical machinery, mining machinery, lifting transportation and the like due to the characteristics of high efficiency, large power, relatively simple structure, good manufacturability and reliable use.
However, with the development of industry and the diversification of demands, the use scene of the high-speed hydraulic pump motor is changed from engineering scenes such as construction sites and coal mines to more precise scenes such as airplanes, so that the requirements on the high-speed hydraulic pump motor are higher, namely, the precision is higher, the noise is smaller and the pulsation is more stable. Most of the existing high-speed hydraulic pump motors cannot meet the requirements of more stable pulsation and less noise, so that development of a low-pulsation high-speed plunger hydraulic pump motor is very necessary.
Disclosure of Invention
The utility model aims to provide a radial low-pulsation plunger hydraulic pump motor, which aims to solve the problems of unstable pulsation and high noise of the existing radial plunger hydraulic motor.
The utility model is realized in the following way:
the radial low-pulsation plunger hydraulic pump motor comprises a shell, a cylinder body component, a plunger component and an oil distribution mechanism, wherein the oil distribution mechanism penetrates through the cylinder body component and is communicated with the cylinder body component; the top of each plunger is embedded with a ceramic ball, and the ceramic balls are in rolling contact with the side wall of the shell.
The shell comprises a main body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively arranged at the front end and the rear end of the main body.
The cylinder body comprises a cylinder body and two second bearings, wherein the two second bearings are respectively sleeved at two ends of the cylinder body and are respectively eccentrically arranged at the inner sides of the front end cover and the rear end cover.
The oil distribution mechanism comprises an oil distribution shaft and a front end cover, wherein an oil port A and an oil port B are arranged on the front end cover, and a plurality of oil ways are arranged on the oil distribution shaft.
The oil ways are divided into two groups and are respectively communicated with the oil port A and the oil port B.
And a cavity is arranged on the cylinder body corresponding to each plunger, and the cavity can be alternately communicated with the oil port A and the oil port B through oil ways.
A first bearing is arranged in the main body, and the end part of the plunger is contacted with the inner ring of the first bearing.
The end part of the cylinder body is provided with a shaft, and the shaft is connected with the cylinder body through a cylindrical pin.
The oil distributing shaft is provided with a pore canal, and oil is input into a gap between the oil distributing shaft and the cylinder body from the pore canal.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the displacement of the motor is adjusted by changing the number of the plungers, and the maximum volume difference of a single plunger can be controlled to ensure extremely low flow pulsation, so that the effect that the larger the displacement is, the smaller the pulsation is, and the motor is far superior to the traditional motor.
2. According to the utility model, the ceramic ball and the first bearing are arranged, so that friction is reduced, and meanwhile, heat generation can be reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a detailed assembly schematic of the present utility model;
FIG. 3 is a schematic view of a front end cap of the present utility model;
FIG. 4 is a schematic illustration of an oil distribution shaft of the present utility model;
FIG. 5 is a schematic diagram of a cylinder of the present utility model;
FIG. 6 shows the results of the pulsation test of the present utility model and the like at the same displacement.
In the figure: A. a housing; B. a plunger; C. a cylinder body; D. an oil distribution mechanism; 2. a rear end cover; 3. a shaft is output; 6. a front end cover; 7. an oil distributing shaft; 10. a cylinder; 11. a plunger; 13. a cylindrical pin; 16. a first bearing; 17. a second bearing; 23. ceramic balls.
The specific embodiment is as follows:
the following is further described with reference to the accompanying drawings and specific examples:
example 1
As shown in fig. 1, a radial low-pulsation plunger hydraulic pump motor comprises a shell a, a cylinder body component C, a plunger component B and an oil distribution mechanism D, wherein the oil distribution mechanism D penetrates through the cylinder body component C and is communicated with the cylinder body component C, the plunger component B is arranged on the cylinder body component C, and the cylinder body component C and the plunger component B are both arranged in the shell a. The shell A provides support for the whole mechanism, an eccentric hole is formed in the shell A, and an eccentric space is provided for the cylinder body C and the plunger B to work. The plunger component B is embedded on the cylinder component C, and under the action of oil pressure, the stroke of the plunger component B is changed to provide a volume difference, and the volume difference is mainly expressed as motor displacement. The oil distribution mechanism D divides the input hydraulic oil into a high-pressure oil way and a low-pressure oil way, inputs the high-pressure oil way and the low-pressure oil way into a space formed by the cylinder body component C and the plunger component B, and forces the plunger component B to move.
As shown in fig. 2, 3 and 4, the specific structure of the shell a is as follows, and the shell a comprises a main body 4, a front end cover 6 and a rear end cover 2, wherein the front end cover 6 and the rear end cover 2 are respectively arranged at the front end and the rear end of the main body 4, an oil port a and an oil port B are arranged on the front end cover 6, and the distribution of the oil port a and the oil port B refers to the third figure.
The plunger assembly B has a specific structure as follows, and the plunger assembly B includes a plurality of sets of plungers 11, each set of plungers 11 includes a plurality of plungers 11, and the plurality of sets of plungers 11 are alternately arranged.
The oil distributing mechanism D is arranged as an oil distributing shaft 7, a plurality of oil ways are arranged on the oil distributing shaft 7 and are equally divided into two groups, and the structure of the oil distributing shaft 7 is shown in the fourth drawing.
The cylinder body component C comprises a cylinder body 10 and two second bearings 17, wherein the two second bearings 17 are respectively sleeved at two ends of the cylinder body 10 and are respectively eccentrically arranged at the inner sides of the front end cover 6 and the rear end cover 2. The cylinder body 10 is provided with cavities which are also divided into a plurality of groups, each group comprises a plurality of cavities, and the cavities are in one-to-one correspondence with the plungers. The end of the cylinder body 10 is provided with a shaft 3, and the shaft 3 is connected with the cylinder body 10 through a cylindrical pin 13.
In order to realize the circulation of hydraulic oil in the oil distribution mechanism D, the cylinder body component C and the plunger component B, a plurality of oil ways are equally divided into two groups which are respectively communicated with the oil port A and the oil port B, and the cavity can be alternately communicated with the oil port A and the oil port B through the oil ways. When high-pressure oil enters from the oil port A and flows to the plunger 11 communicated with the oil path along the oil path, the plunger 11 is ejected by the high-pressure oil. Because the cylinder body 10 is eccentrically arranged, when some plungers 11 protrude out of the cavity and contact with the inner side wall of the shell, the cylinder body 10 is controlled to rotate to the side with small eccentricity, namely the side of the low-pressure oil path, at the moment, the cylinder body 10 rotates for 72 degrees, the cavity filled with high-pressure oil is communicated with the oil port B, and the high-pressure oil is unloaded through the port B, so that one cycle is completed. In order to enable the rotating speed to reach 4000r/min, the scheme adopts a mode that the oil distributing shaft 7 is fixed, and the cylinder body 10 and the plunger 11 rotate, so that the rotating speed can be effectively improved.
As shown in fig. 5, in the case of changing the motor displacement, the pulsation flow rate can be adjusted, and therefore, the present embodiment sets the plunger composition B into three groups of plungers 11, each group of plungers 11 including five plungers 11, the three groups of plungers 11 being alternately arranged, and the arrangement of the three groups of plungers 11 referring to fig. 5. The displacement is changed by changing the number of the plungers 11, and the maximum volume difference of the single plunger 11 is controlled to ensure extremely low flow pulsation, so that the effect that the larger the displacement is, the smaller the pulsation is, and the motor is far superior to a traditional motor. When the scheme is tested, the motor related to the scheme has a better pulsation test structure compared with the similar products, and the test is completed by referring to the figure six.
Example 2
As shown in fig. 1, a radial low-pulsation plunger hydraulic pump motor comprises a shell a, a cylinder body component C, a plunger component B and an oil distribution mechanism D, wherein the oil distribution mechanism D penetrates through the cylinder body component C and is communicated with the cylinder body component C, the plunger component B is arranged on the cylinder body component C, and the cylinder body component C and the plunger component B are both arranged in the shell a. The shell A provides support for the whole mechanism, an eccentric hole is formed in the shell A, and an eccentric space is provided for the cylinder body C and the plunger B to work. The plunger component B is embedded on the cylinder component C, and under the action of oil pressure, the stroke of the plunger component B is changed to provide a volume difference, and the volume difference is mainly expressed as motor displacement. The oil distribution mechanism D divides the input hydraulic oil into a high-pressure oil way and a low-pressure oil way, inputs the high-pressure oil way and the low-pressure oil way into a space formed by the cylinder body component C and the plunger component B, and forces the plunger component B to move.
As shown in fig. 2, 3 and 4, the specific structure of the shell a is as follows, and the shell a comprises a main body 4, a front end cover 6 and a rear end cover 2, wherein the front end cover 6 and the rear end cover 2 are respectively arranged at the front end and the rear end of the main body 4, an oil port a and an oil port B are arranged on the front end cover 6, and the distribution of the oil port a and the oil port B refers to the third figure.
The plunger assembly B has a specific structure as follows, and the plunger assembly B includes a plurality of sets of plungers 11, each set of plungers 11 includes a plurality of plungers 11, and the plurality of sets of plungers 11 are alternately arranged.
The oil distributing mechanism D is arranged as an oil distributing shaft 7, a plurality of oil ways are arranged on the oil distributing shaft 7 and are equally divided into two groups, and the structure of the oil distributing shaft 7 is shown in the fourth drawing.
The cylinder body component C comprises a cylinder body 10 and two second bearings 17, wherein the two second bearings 17 are respectively sleeved at two ends of the cylinder body 10 and are respectively eccentrically arranged at the inner sides of the front end cover 6 and the rear end cover 2. The cylinder body 10 is provided with cavities which are also divided into a plurality of groups, each group comprises a plurality of cavities, and the cavities are in one-to-one correspondence with the plungers. The end of the cylinder body 10 is provided with a shaft 3, and the shaft 3 is connected with the cylinder body 10 through a cylindrical pin 13.
In order to realize the circulation of hydraulic oil in the oil distribution mechanism D, the cylinder body component C and the plunger component B, a plurality of oil ways are equally divided into two groups which are respectively communicated with the oil port A and the oil port B, and the cavity can be alternately communicated with the oil port A and the oil port B through the oil ways. When high-pressure oil enters from the oil port A and flows to the plunger 11 communicated with the oil path along the oil path, the plunger 11 is ejected by the high-pressure oil. Because the cylinder body 10 is eccentrically arranged, when some plungers 11 protrude out of the cavity and contact with the inner side wall of the shell, the cylinder body 10 is controlled to rotate to the side with small eccentricity, namely the side of the low-pressure oil path, at the moment, the cylinder body 10 rotates for 72 degrees, the cavity filled with high-pressure oil is communicated with the oil port B, and the high-pressure oil is unloaded through the port B, so that one cycle is completed. In order to enable the rotating speed to reach 4000r/min, the scheme adopts a mode that the oil distributing shaft 7 is fixed, and the cylinder body 10 and the plunger 11 rotate, so that the rotating speed can be effectively improved.
As shown in fig. 5, in the case of changing the motor displacement, the pulsation flow rate can be adjusted, and therefore, the present embodiment sets the plunger composition B into three groups of plungers 11, each group of plungers 11 including five plungers 11, the three groups of plungers 11 being alternately arranged, and the arrangement of the three groups of plungers 11 referring to fig. 5. The displacement is changed by changing the number of the plungers 11, and the maximum volume difference of the single plunger 11 is controlled to ensure extremely low flow pulsation, so that the effect that the larger the displacement is, the smaller the pulsation is, and the motor is far superior to a traditional motor. When the scheme is tested, the motor related to the scheme has a better pulsation test structure compared with the similar products, and the test is completed by referring to the figure six.
As shown in fig. 1 and 2, ceramic balls 23 are fitted on the top of each plunger to reduce noise of the pump motor, and a first bearing 16 is provided in the main body 4, and the ceramic balls 23 are in rolling contact with the inner ring of the first bearing 16. The ceramic balls 23 are provided to reduce friction and heat generation. The first bearing 16 can rotate in a follow-up manner, so that the relative rotation speed is reduced, meanwhile, the hardness and the wear resistance of the inner ring of the first bearing 16 are good, and the wear and the heat are effectively reduced.
Example 3
As shown in fig. 1, a radial low-pulsation plunger hydraulic pump motor comprises a shell a, a cylinder body component C, a plunger component B and an oil distribution mechanism D, wherein the oil distribution mechanism D penetrates through the cylinder body component C and is communicated with the cylinder body component C, the plunger component B is arranged on the cylinder body component C, and the cylinder body component C and the plunger component B are both arranged in the shell a. The shell A provides support for the whole mechanism, an eccentric hole is formed in the shell A, and an eccentric space is provided for the cylinder body C and the plunger B to work. The plunger component B is embedded on the cylinder component C, and under the action of oil pressure, the stroke of the plunger component B is changed to provide a volume difference, and the volume difference is mainly expressed as motor displacement. The oil distribution mechanism D divides the input hydraulic oil into a high-pressure oil way and a low-pressure oil way, inputs the high-pressure oil way and the low-pressure oil way into a space formed by the cylinder body component C and the plunger component B, and forces the plunger component B to move.
As shown in fig. 2, 3 and 4, the specific structure of the shell a is as follows, and the shell a comprises a main body 4, a front end cover 6 and a rear end cover 2, wherein the front end cover 6 and the rear end cover 2 are respectively arranged at the front end and the rear end of the main body 4, an oil port a and an oil port B are arranged on the front end cover 6, and the distribution of the oil port a and the oil port B refers to the third figure.
The plunger assembly B has a specific structure as follows, and the plunger assembly B includes a plurality of sets of plungers 11, each set of plungers 11 includes a plurality of plungers 11, and the plurality of sets of plungers 11 are alternately arranged.
The oil distributing mechanism D is arranged as an oil distributing shaft 7, a plurality of oil ways are arranged on the oil distributing shaft 7 and are equally divided into two groups, and the structure of the oil distributing shaft 7 is shown in the fourth drawing.
The cylinder body component C comprises a cylinder body 10 and two second bearings 17, wherein the two second bearings 17 are respectively sleeved at two ends of the cylinder body 10 and are respectively eccentrically arranged at the inner sides of the front end cover 6 and the rear end cover 2. The cylinder body 10 is provided with cavities which are also divided into a plurality of groups, each group comprises a plurality of cavities, and the cavities are in one-to-one correspondence with the plungers. The end of the cylinder body 10 is provided with a shaft 3, and the shaft 3 is connected with the cylinder body 10 through a cylindrical pin 13.
In order to realize the circulation of hydraulic oil in the oil distribution mechanism D, the cylinder body component C and the plunger component B, a plurality of oil ways are equally divided into two groups which are respectively communicated with the oil port A and the oil port B, and the cavity can be alternately communicated with the oil port A and the oil port B through the oil ways. When high-pressure oil enters from the oil port A and flows to the plunger 11 communicated with the oil path along the oil path, the plunger 11 is ejected by the high-pressure oil. Because the cylinder body 10 is eccentrically arranged, when some plungers 11 protrude out of the cavity and contact with the inner side wall of the shell, the cylinder body 10 is controlled to rotate to the side with small eccentricity, namely the side of the low-pressure oil path, at the moment, the cylinder body 10 rotates for 72 degrees, the cavity filled with high-pressure oil is communicated with the oil port B, and the high-pressure oil is unloaded through the port B, so that one cycle is completed. In order to enable the rotating speed to reach 4000r/min, the scheme adopts a mode that the oil distributing shaft 7 is fixed, and the cylinder body 10 and the plunger 11 rotate, so that the rotating speed can be effectively improved.
As shown in fig. 5, in the case of changing the motor displacement, the pulsation flow rate can be adjusted, and therefore, the present embodiment sets the plunger composition B into three groups of plungers 11, each group of plungers 11 including five plungers 11, the three groups of plungers 11 being alternately arranged, and the arrangement of the three groups of plungers 11 referring to fig. 5. The displacement is changed by changing the number of the plungers 11, and the maximum volume difference of the single plunger 11 is controlled to ensure extremely low flow pulsation, so that the effect that the larger the displacement is, the smaller the pulsation is, and the motor is far superior to a traditional motor. When the scheme is tested, the motor related to the scheme has a better pulsation test structure compared with the similar products, and the test is completed by referring to the figure six.
As shown in fig. 1 and 2, ceramic balls 23 are fitted on the top of each plunger to reduce noise of the pump motor, and a first bearing 16 is provided in the main body 4, and the ceramic balls 23 are in rolling contact with the inner ring of the first bearing 16. The ceramic balls 23 are provided to reduce friction and heat generation. The first bearing 16 can rotate in a follow-up manner, so that the relative rotation speed is reduced, meanwhile, the hardness and the wear resistance of the inner ring of the first bearing 16 are good, and the wear and the heat are effectively reduced.
The oil distributing shaft 7 is provided with a pore canal, oil is input into a gap between the oil distributing shaft 7 and the cylinder body 10 from the pore canal and serves as friction and heat dissipation medium, so that abrasion and heat generation are effectively reduced, and heat generation is further reduced.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The radial low-pulsation plunger hydraulic pump motor comprises a shell (A), a cylinder body component (C), a plunger component (B) and an oil distribution mechanism (D), wherein the oil distribution mechanism (D) penetrates through the cylinder body component (C) and is communicated with the cylinder body component (C), and the plunger component (B) is arranged on the cylinder body component (C), and the radial low-pulsation plunger hydraulic pump motor is characterized in that the plunger component (B) comprises three groups of plungers (11), each group of plungers (11) comprises five plungers (11), and the three groups of plungers (11) are alternately arranged; the top of each plunger (11) is embedded with a ceramic ball (23), and the ceramic balls (23) are in rolling contact with the side wall of the shell (A).
2. A radial low pulsation plunger hydraulic pump motor according to claim 1, characterized in that the housing (a) comprises a main body, a front end cover (6) and a rear end cover (2), the front end cover (6) and the rear end cover (2) being provided at the front and rear ends of the main body, respectively.
3. A radial low pulsation plunger hydraulic pump motor according to claim 2, characterized in that the cylinder block assembly (C) comprises a cylinder block (10) and two second bearings (17), the two second bearings (17) being respectively sleeved at both ends of the cylinder block (10) and being respectively eccentrically arranged at the inner sides of the front end cover (6) and the rear end cover (2).
4. A radial low pulsation plunger hydraulic pump motor according to claim 3, characterized in that the oil distribution mechanism (D) comprises an oil distribution shaft (7) and a front end cover (6), an oil port a and an oil port B are arranged on the front end cover (6), and a plurality of oil passages are arranged on the oil distribution shaft (7).
5. The motor of claim 4, wherein the plurality of oil passages are divided into two groups, and are respectively communicated with the oil port A and the oil port B.
6. A radial low pulsation plunger hydraulic pump motor according to claim 5, characterized in that a cavity is provided on the cylinder (10) corresponding to each plunger (11), said cavity being alternately communicable with the a-port and the B-port through oil passages.
7. A radial low pulsation plunger hydraulic pump motor according to claim 2, characterized in that a first bearing (16) is provided in the body, the end of the plunger (11) being in contact with the inner ring of the first bearing (16).
8. A radial low pulsation plunger hydraulic pump motor according to claim 3, characterized in that the end of the cylinder (10) is provided with a tapping shaft (3), the tapping shaft (3) being connected with the cylinder (10) by means of a cylindrical pin (13).
9. A radial low pulsation plunger hydraulic pump motor according to claim 4, characterized in that the oil distribution shaft (7) is provided with a port, from which oil is fed into the gap between the oil distribution shaft (7) and the cylinder (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322514191.0U CN220748468U (en) | 2023-09-15 | 2023-09-15 | Radial low-pulsation plunger hydraulic pump motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322514191.0U CN220748468U (en) | 2023-09-15 | 2023-09-15 | Radial low-pulsation plunger hydraulic pump motor |
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| Publication Number | Publication Date |
|---|---|
| CN220748468U true CN220748468U (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322514191.0U Active CN220748468U (en) | 2023-09-15 | 2023-09-15 | Radial low-pulsation plunger hydraulic pump motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748468U (en) |
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2023
- 2023-09-15 CN CN202322514191.0U patent/CN220748468U/en active Active
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