CN202756237U - Steering oil pump - Google Patents
Steering oil pump Download PDFInfo
- Publication number
- CN202756237U CN202756237U CN 201220393521 CN201220393521U CN202756237U CN 202756237 U CN202756237 U CN 202756237U CN 201220393521 CN201220393521 CN 201220393521 CN 201220393521 U CN201220393521 U CN 201220393521U CN 202756237 U CN202756237 U CN 202756237U
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- Prior art keywords
- pump
- pump housing
- pump body
- stator
- oil distribution
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- Expired - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model provides a steering oil pump. The steering oil pump comprises a pump body, a pump shaft, a stator, a rotor, a front oil distribution disc and a back oil distribution disc, wherein the rotor is arranged in a stator chamber of the stator. The pump body comprises a front pump body and a back pump body, wherein the front pump body and the back pump body are detachably connected together. The back pump body is provided a pump body cavity. The back oil distribution disc, the stator and the front oil distribution disc are sequentially installed in the pump body cavity from back to front. The pump shaft is installed in the front pump body in rotating mode. The front end portion of the pump shaft extends out of the front pump body, and a transmission gear is installed on the front end portion of the pump shaft. The back end portion of the pump shaft extends in the pump body cavity of the back pump body and is fixedly connected with the rotor. According to the steering oil pump, a split type structure is adopted. In the process of installation, the back oil distribution disc, the stator and the front oil distribution disc are sequentially installed in the pump body cavity of the back pump body through an opening in the front of the back pump body, then the back pump body is fixedly connected with the front pump body, the opening of the pump body cavity is blocked by the front pump body, and the front oil distribution disc is fixed through the front pump body. Therefore, the length of the steering oil pump is decreased, and then the size of the steering oil pump is decreased. Besides, assembly is easy, convenient and fast.
Description
Technical field
The utility model relates to the power steering device, particularly a kind of steerig pump that is applicable on the heavy truck.
Background technique
The heavy truck carrying capacity is large, and the operation commutation is generally relatively poor, thereby the heavy truck steering system has been proposed higher requirement, and commutator geometry discharge capacity to steerig pump after strengthening cylinder diameter requires to improve.
Traditional steerig pump comprises the pump housing, pump shaft, stator, rotor, front oil distribution casing, rear oil distribution casing etc., the containing space that connects before and after having in the pump housing, be used for accommodating pump shaft, stator, front oil distribution casing, rear oil distribution casing etc., also have filler opening and oil outlet on the pump housing.Pump shaft is installed in rotation in the pump housing, and its front end stretches out the pump housing, and driving gear is installed; Stator is installed in rear portion in the pump housing, and it has the stator chamber of a hollow ellipse cylindricality; Rotor is installed in the rearward end of pump shaft and places in the stator chamber, rotor is cylindrical, radially be provided with a plurality of slots on it, telescopically is installed a slice blade in each slot, when the pump shaft rotor driven rotates, some blades are thrown out of and contact cooperation with the stator locular wall, thereby stator chamber is divided into a plurality of grease chambeies of joining; Front oil distribution casing is installed in the stator front, has oil inlet hole and oil outlet on it; Rear oil distribution casing is installed in the stator back, has oil inlet hole and oil outlet on it.
When traditional steerig pump is worked, motor drives pump shaft and rotor by driving gear, low pressure oil by filler opening through front oil distribution casing and after the oil inlet hole of oil distribution casing be inhaled into stator chamber, because stator chamber is the hollow ellipse cylindricality, rotor is cylindrical, so join grease chamber's volume and can change along with the rotation of rotor by what adjacent two blades, rotor outer wall, stator locular wall surrounded, by the factors such as shape, size and rotor size of design stator chamber, can satisfy the requirement of how much discharge capacities of steerig pump.
Assembling is during steerig pump, and front oil distribution casing, stator, rear oil distribution casing are packed in the pump housing by pump housing back successively, with fixed support device and block pump housing open rearward end, fixes rear oil distribution casing, and assembly operation bothers very much; Simultaneously, during owing to oil distribution casing after installation, need to use fixed support device, thereby increased the entire length of steerig pump, cause the volume ratio of steerig pump larger; In addition, owing to the complete vehicle structure reason, it is long that pump shaft stretches out the distance of pump housing front end, has the part pump shaft to expose between driving gear and the pump housing, thereby affected the stability of transmission; Simultaneously, the pump housing in traditional steerig pump is formed by iron casting, so volume is large, Heavy Weight, has increased the assembling difficulty of steerig pump on car load.Therefore, traditional steerig pump is difficult to realize the performance boost of heavy truck steering system.
The model utility content
The purpose of this utility model is to solve the defective of above-mentioned prior art, provides a kind of volume steerig pump little, easy to assembly.
For achieving the above object, the utility model adopts following technological scheme:
Steerig pump of the present utility model, comprise the pump housing, pump shaft, the stator with filler opening and oil outlet, interior rotor, front oil distribution casing and the rear oil distribution casing of stator chamber that is arranged on described stator, wherein, the described pump housing comprises the front pump housing and the rear pump housing that is detachably connected, and is provided with Sealing between the described front pump housing and the rear pump housing; The described rear pump housing has pump housing chamber, described pump housing chamber has the opening towards the described front pump housing, described pump housing chamber is interior by described rear oil distribution casing, stator and front oil distribution casing are installed before backward successively, described pump shaft is installed in rotation in the described front pump housing, described pump shaft front end extends the described front pump housing, and driving gear is installed, described pump shaft rearward end extends in the pump housing chamber of the described rear pump housing, and is fixedly connected with described rotor.
The described front pump housing has the bump that extends forward, is equipped with in the described bump be used to the rolling bearing that supports described pump shaft, is equipped be used to the needle bearing that supports described pump shaft in the described front pump housing.
Described bump extends to forward contiguous described driving gear ear end face position.
The described front pump housing and the described rear pump housing are made by aluminium material.
Described filler opening and oil outlet are arranged on the described rear pump housing.
Between the described front pump housing and the described pump shaft seal ring is installed, described seal ring is between described rolling bearing and described needle bearing.
As shown from the above technical solution, advantage and the good effect of steerig pump of the present utility model are: because the pump housing adopts split-type structural, comprise the front pump housing and the rear pump housing, so when installing, can rear oil distribution casing, stator and front oil distribution casing be installed in the pump housing chamber of the rear pump housing first successively by the opening of rear pump housing front, again the rear pump housing and the front pump housing are connected and fixed, block opening and the fixing front oil distribution casing of pump housing chamber by the front pump housing.Therefore, need not use other fixed connection apparatus to fix front oil distribution casing or rear oil distribution casing in the utility model, thereby reduce the length of steerig pump, and then reduce volume; Simultaneously, need to be by other fixed connection apparatus, so that assembling of the present utility model is very simple, convenient, fast yet.
By referring to the accompanying drawing description of a preferred embodiment, above-mentioned and other objects, features and advantages of the present utility model will be more obvious.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model steerig pump;
Fig. 2 is the left view of steerig pump shown in Figure 1;
Fig. 3 is the right elevation of steerig pump shown in Figure 1, has wherein removed the pump housing, front oil distribution casing.
Embodiment
The below will describe specific embodiment of the utility model in detail.Should be noted that the embodiments described herein only is used for illustrating, be not limited to the utility model.
Such as Fig. 1, Fig. 2 and shown in Figure 3, steerig pump of the present utility model comprises: the pump housing, pump shaft 5, stator 17, rotor 18, front oil distribution casing 13 and rear oil distribution casing 15.
The pump housing comprises the front pump housing 9 and the rear pump housing 14 that is detachably attached to together, is provided with O-ring seals 12 between the front pump housing 9 and the rear pump housing 14.
The front pump housing 9 has the bump that extends forward, has the through hole for the front and back perforation of accommodating pump shaft 5 in the front pump housing 9 and the bump thereof.By Steel Cable Baffle Ring 8 and circlip 6 rolling bearing 7 is installed in the bump, is used for supporting pump shaft 5.In the front pump housing 9 needle bearing 11 is installed.Be provided with seal ring 10 between the front pump housing 9 and the pump shaft 5, seal ring 10 is between rolling bearing 7 and needle bearing 11.Pump shaft 5 front ends extend the front pump housing 9, and by tightening nut 1, lock washer 2 and flat key 4 driving gear 3 are installed at extension.Preferably, bump extends to forward contiguous driving gear 3 ear end face positions, can avoid like this pump shaft 5 exposed.In the utility model, by two bearings pump shafts 5, and pump shaft 5 almost do not have exposed part, therefore before 9 pairs of pump shafts 5 of the pump housing support strength and support uniformity and significantly strengthen, thereby improved the stability of pump shaft 5, guarantee the steady transmission of power.
The rear pump housing 14 has pump housing chamber, pump housing chamber has the opening towards the front pump housing 9, rear oil distribution casing 15, stator 17 and front oil distribution casing 13 can be arranged in the pump housing chamber by complying with before backward by this opening, be provided with Sealing 27 between rear oil distribution casing 15 and the rear pump housing 14.Also have filler opening 19, oil outlet 20 and annular low pressure oil duct 21 on the rear pump housing 14.Pump shaft 5 rearward end extend in the pump housing chamber of the rear pump housing 14, and are fixedly connected with rotor 18.
Steerig pump of the present utility model is installed to pump shaft 5 in the front pump housing 9 when assembling; At pump shaft 4 front ends driving gear 3 is installed; In pump shaft 5 rearward end rotor 18 is installed; Opening by rear pump housing front is mounted to rear oil distribution casing 15, stator 17 and front oil distribution casing 13 in the pump housing chamber of the rear pump housing 14 successively, wherein can use bearing pin to pass the pin-and-hole 25 on the rear oil distribution casing 15 and be fixed to pump housing cavity bottom, the pin-and-hole 27 that passes on the stator with bearing pin passes rear oil distribution casing 15 again and stator 17 is fixed to the rear pump housing 14; Then by bolt 26 or other knockdown pieces the front pump housing 9 and the rear pump housing 14 are fastenedly connected together.
Preferably, in the utility model, the front pump housing 9 and the rear pump housing 14 are made by aluminium material, and than traditional cast iron pump body, the weight of steerig pump of the present utility model significantly alleviates, and has made things convenient for the installation of steerig pump on the heavy truck car load.
In the utility model, because the pump housing comprises the front pump housing 9 and the rear pump housing 14, is a kind of split type pump housing, during assembling, can rear oil distribution casing 15, stator 17 and front oil distribution casing 13 be installed to the rear pump housing 14 from the opening of the rear pump housing 14 fronts, the front pump housing 9 be fixedly connected with the rear pump housing 14 get final product again.In whole assembling process, do not need to use other fixing device to fix rear oil distribution casing 15 assemblies such as grade, therefore assembly operation is simple, convenient, fast, and has shortened whole steerig pump in the length along pump shaft 5 axial directions, has reduced the volume of steerig pump.Therefore, the utility model not only can satisfy large cylinder diameter commutator flow and pressure demand in the heavy truck-type, and volume is little, lightweight, easy to assembly, good endurance.
Working principle of the present utility model is identical with the working principle of existing steerig pump: under rotor 18 rotary actions, low pressure oil enters stator chamber 22 by the oil inlet hole on filler opening 19, annular low pressure oil duct 21, front oil distribution casing 13 and the rear oil distribution casing 15, each joins the grease chamber after volume changes in the stator chamber 22, low pressure oil in it is converted into high pressure oil, again through front oil distribution casing 13 and after oil outlet and the oil outlet on the pump housing 14 20 on the oil distribution casing 15 discharge steerig pumps.
Although described the utility model with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.Because the utility model is implementation and do not break away from spirit or the essence of model utility in a variety of forms, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and should be in the spirit and scope that the claim of enclosing limits explain widely, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be the claim of enclosing and contain.
Claims (6)
1. steerig pump, comprise: have filler opening (19) and oil outlet (20) the pump housing, pump shaft (5), stator (17), be arranged on rotor (18), front oil distribution casing (13) and rear oil distribution casing (15) in the stator chamber of described stator (17), it is characterized in that
The described pump housing comprises the front pump housing (9) and the rear pump housing (14) that is detachably connected, and is provided with Sealing between the described front pump housing (9) and the rear pump housing (14);
The described rear pump housing (14) has pump housing chamber, and described pump housing chamber has the opening towards the described front pump housing (9), in the described pump housing chamber by described rear oil distribution casing (15), stator (17) and front oil distribution casing (13) are installed before backward successively,
Described pump shaft (5) is installed in rotation in the described front pump housing (9), described pump shaft (5) front end extends the described front pump housing (9), and driving gear (3) is installed, described pump shaft (5) rearward end extends in the pump housing chamber of the described rear pump housing (14), and is fixedly connected with described rotor (18).
2. steerig pump as claimed in claim 1, it is characterized in that, the described front pump housing (9) has the bump that extends forward, be equipped with in the described bump be used to the rolling bearing that supports described pump shaft (5) (7), be equipped be used to the needle bearing that supports described pump shaft (5) (11) in the described front pump housing (9).
3. steerig pump as claimed in claim 2 is characterized in that, described bump extends to forward contiguous described driving gear (3) ear end face position.
4. such as claim 1,2 or 3 described steerig pumps, it is characterized in that the described front pump housing (9) and the described rear pump housing (14) are made by aluminium material.
5. steerig pump as claimed in claim 4 is characterized in that, described filler opening (19) and oil outlet (20) are arranged on the described rear pump housing (14).
6. steerig pump as claimed in claim 5 is characterized in that, between the described front pump housing (9) and the described pump shaft (5) seal ring (10) is installed, and described seal ring (10) is positioned between described rolling bearing (7) and the described needle bearing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393521 CN202756237U (en) | 2012-08-09 | 2012-08-09 | Steering oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393521 CN202756237U (en) | 2012-08-09 | 2012-08-09 | Steering oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756237U true CN202756237U (en) | 2013-02-27 |
Family
ID=47735422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220393521 Expired - Fee Related CN202756237U (en) | 2012-08-09 | 2012-08-09 | Steering oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552892A (en) * | 2019-08-31 | 2019-12-10 | 徐州工程学院 | Novel hollow pump |
-
2012
- 2012-08-09 CN CN 201220393521 patent/CN202756237U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552892A (en) * | 2019-08-31 | 2019-12-10 | 徐州工程学院 | Novel hollow pump |
| CN110552892B (en) * | 2019-08-31 | 2024-05-14 | 徐州工程学院 | Novel hollow pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20170809 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |