CN213016651U - Double-bearing-support single-cylinder radial plunger pump for point switch - Google Patents
Double-bearing-support single-cylinder radial plunger pump for point switch Download PDFInfo
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- CN213016651U CN213016651U CN202021674839.0U CN202021674839U CN213016651U CN 213016651 U CN213016651 U CN 213016651U CN 202021674839 U CN202021674839 U CN 202021674839U CN 213016651 U CN213016651 U CN 213016651U
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Abstract
The utility model relates to a double-bearing support single-cylinder radial plunger pump for a switch machine, which comprises a pump body and an end cover connected with the pump body, wherein a flow distribution bearing and a flow distribution shaft are installed in the pump body, a first support bearing is arranged at the inner side of the flow distribution shaft and is matched and connected with the flow distribution shaft, a second support bearing is arranged at the outer side of the flow distribution shaft and is supported, and a snap spring is arranged at the outer side of the second support bearing for limiting; the cylinder body is arranged outside the valve shaft, and the plunger and a plunger spring sleeved outside the plunger are arranged in the cylinder body. A framework oil seal is arranged on the inner side of the end cover, and the end cover is fastened with the pump body through screws; the first support bearing is in contact with a boss on the inner side of the pump body, and the clamp spring is arranged at the outer end part of the flow distribution shaft. The utility model has the advantages that, radial plunger pump rotational stability is high, and the clearance between cylinder body and the valve shaft can not receive the temperature influence to take place big change, and the volume efficiency stability is good.
Description
Technical Field
The utility model belongs to the technical field of the goat, concretely relates to goat is with duplex bearing support single cylinder radial plunger pump.
Background
At present, the common oil pumps in the electro-hydraulic switch machine comprise a swash plate axial plunger pump and a radial plunger pump. The swash plate axial plunger pump has low volumetric efficiency and large volume, and the swash plate is easy to wear.
If figure 1, radial plunger pump has or not supports single cylinder body plunger pump, when radial plunger pump begins to rotate, can produce pressure differential in the cylinder body, the effort that high pressure one side produced makes low pressure side cylinder body hole and valve shaft friction, this long time can aggravate the partial wear of cylinder body hole in the past, the increase leaks the leakage quantity, reduce radial plunger pump's volumetric efficiency, simultaneously, the cuttings that wearing and tearing produced can aggravate the wearing and tearing of other moving parts in the pump body, reduce radial plunger pump's life.
As shown in fig. 2, the double bearings support the double-cylinder radial plunger pump, and the two bearings support the cylinder body, so that the pressure difference phenomenon can be avoided.
The utility model discloses summarize the problem that above-mentioned two kinds of radial plunger pumps in use appear, adopt a goat to support single cylinder radial plunger pump with duplex bearing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problem, providing a goat supports single cylinder body radial plunger pump with duplex bearing, radial plunger pump rotational stability is high, and the clearance between cylinder body and the valve shaft can not receive the temperature to influence the change that takes place greatly, and the volume efficiency stability is good.
In order to achieve the above object, the utility model provides a following technical scheme:
a double-bearing-support single-cylinder radial plunger pump for a point switch comprises a pump body and an end cover connected with the pump body, wherein a flow distribution bearing and a flow distribution shaft are installed in the pump body, a first support bearing is arranged on the inner side of the flow distribution shaft and is connected in a matched mode, a second support bearing support is arranged on the outer side of the flow distribution shaft, and a clamp spring is arranged on the outer side of the second support bearing for limiting; the cylinder body is arranged outside the valve shaft, and the plunger and a plunger spring sleeved outside the plunger are arranged in the cylinder body.
Further, a framework oil seal is installed on the inner side of the end cover, and the end cover is fastened with the pump body through screws.
Further, the first support bearing is in contact with a boss on the inner side of the pump body.
Furthermore, the clamp spring is arranged at the outer end part of the port shaft.
Preferably, the cylinder block is made of steel.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model adopts a double-bearing supporting single cylinder body, and the two ends of the single cylinder body are supported by bearings, the radial plunger pump has high rotation stability, the clearance between the cylinder body and the valve shaft can not be greatly changed by the temperature, and the volume efficiency has good stability;
the cylinder body is made of steel, the expansion coefficient of the cylinder body is basically consistent with that of the material of the valve shaft, the gap between the cylinder body and the valve shaft is not greatly influenced by temperature change, and the volumetric efficiency of the pump is not greatly changed.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required to be used in the description of the embodiment will be briefly introduced below, it is obvious that the drawings in the following description are only for more clearly illustrating the embodiment of the present invention or the technical solution in the prior art, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic structural view of a single cylinder radial plunger pump without a bearing support;
FIG. 2 is a schematic structural view of a double-bearing supported double-cylinder radial plunger pump;
FIG. 3 is a schematic structural view of the dual-bearing single cylinder radial plunger pump of the present invention;
in the figure: 1-a pump body, 2-an end cover, 3-a flow distribution bearing, 4-a plunger spring, 5-a plunger, 6-a cylinder body, 7-a flow distribution shaft, 8-a second support bearing, 9-a snap spring, 10-a framework oil seal and 81-a first support bearing.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described with reference to the following specific embodiments, which are provided as illustration only and are not intended to limit the present invention.
As shown in fig. 3, the double-bearing-support single-cylinder radial plunger pump for the point switch comprises a pump body 1, an end cover 2, a flow distribution bearing 3, a plunger spring 4, a plunger 5, a cylinder body 6, a flow distribution shaft 7, a first support bearing 81, a second support bearing 8, a clamp spring 9 and a framework oil seal 10; the flow distribution bearing 3 and the flow distribution shaft 7 are arranged in the pump body 1, and the first support bearing 81 is arranged on the flow distribution shaft 7 and is contacted with a boss on the inner side of the pump body 1; the plunger spring 4 is sleeved on the plunger 5 and is placed in the cylinder body 6 together, the cylinder body 6 is inserted into the port shaft 7, the inner side of the cylinder body is matched with the first supporting bearing 81, the outer side of the cylinder body is supported by the second supporting bearing 8, the clamp spring 9 arranged at the end part of the port shaft 7 limits the second supporting bearing 8, the framework oil seal 10 is arranged on the end cover 2, and the end cover 2 and the pump body 1 are fastened by screws.
When the radial plunger pump starts to work and rotate, the single cylinder body is adopted, and the two ends of the single cylinder body are supported by the bearings, so that the radial plunger pump is high in rotation stability, the gap between the cylinder body 6 and the valve shaft 7 cannot be greatly changed due to the influence of temperature, and the stability of the volume efficiency is good.
The utility model adopts double bearings to support the single cylinder body, thereby ensuring the stability of the cylinder body during rotation;
the cylinder body 6 is made of steel and basically consistent with the expansion coefficient of the material used by the valve shaft 7, and the clearance between the cylinder body and the valve shaft is not greatly influenced by temperature change, so that the volumetric efficiency of the pump is not greatly changed.
The present invention is not described in detail in the prior art.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A double-bearing-support single-cylinder radial plunger pump for a point switch comprises a pump body (1) and an end cover (2) connected with the pump body, and is characterized in that a flow distribution bearing (3) and a flow distribution shaft (7) are installed in the pump body (1), a first support bearing (81) is arranged on the inner side of the flow distribution shaft (7) and is connected in a matching mode, a second support bearing (8) is arranged on the outer side of the flow distribution shaft for supporting, and a clamp spring (9) is arranged on the outer side of the second support bearing (8) for limiting; the cylinder body (6) is arranged outside the valve shaft (7), and the plunger (5) and the plunger spring (4) sleeved outside the plunger are arranged in the cylinder body (6).
2. A switch machine double bearing supported single cylinder radial plunger pump according to claim 1, characterized in that the end cover (2) is internally provided with a skeleton oil seal (10), and the end cover (2) is fastened with the pump body (1) through screws.
3. A switch machine double bearing supported single cylinder radial piston pump according to claim 1, characterized in that said first support bearing (81) is in contact with the boss inside the pump body (1).
4. A switch machine double bearing supported single cylinder radial plunger pump as claimed in claim 1, characterized in that said circlip (9) is mounted at the outer end of the port shaft (7).
5. A switch machine double bearing supported single cylinder radial piston pump according to any of claims 1 to 4, characterized in that the cylinder (6) is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021674839.0U CN213016651U (en) | 2020-08-13 | 2020-08-13 | Double-bearing-support single-cylinder radial plunger pump for point switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021674839.0U CN213016651U (en) | 2020-08-13 | 2020-08-13 | Double-bearing-support single-cylinder radial plunger pump for point switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213016651U true CN213016651U (en) | 2021-04-20 |
Family
ID=75464515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021674839.0U Active CN213016651U (en) | 2020-08-13 | 2020-08-13 | Double-bearing-support single-cylinder radial plunger pump for point switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213016651U (en) |
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2020
- 2020-08-13 CN CN202021674839.0U patent/CN213016651U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20221220 Address after: 710000 No. 502, Xianning East Road, Xincheng District, Xi'an, Shaanxi Patentee after: XI'AN TIANBAO SIGNAL TECHNOLOGY Co.,Ltd. Patentee after: BEIJING HUATIE INFORMATION TECHNOLOGY Co.,Ltd. Address before: No.11, planning Third Road, phase II, National Aviation hi tech industrial base, Xi'an, Shaanxi 710000 Patentee before: XI'AN TIANBAO SIGNAL TECHNOLOGY Co.,Ltd. |