CN208073744U - The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump - Google Patents
The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump Download PDFInfo
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- CN208073744U CN208073744U CN201820497506.1U CN201820497506U CN208073744U CN 208073744 U CN208073744 U CN 208073744U CN 201820497506 U CN201820497506 U CN 201820497506U CN 208073744 U CN208073744 U CN 208073744U
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Abstract
A kind of spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump, including plunger body, spring base, spring, steel ball seat I, steel ball and steel ball seat II are provided；Plunger body is that one end passes through the closing of external arc plunger header structure and the tubular structure of another end opening；Spring base is fixed on plunger body pore bottom, and spring one end, which stretches into plunger body, to be fixed on spring base, and the spring other end is cased with steel ball seat I, and the installation of plunger body, spring base, spring and steel ball seat I forms Monolithic spring plunger header structure；Steel ball seat II is placed in the plunger hole of cylinder body, and I one end of steel ball seat of Monolithic spring plunger header structure is stretched into plunger hole and steel ball is made to be placed between steel ball seat I and steel ball seat II.The utility model improves plunger body structure, makes plunger body that can carry out bulk heat treatmet, realizes that plunger body is heat-treated Mass production, cost-effective, ensures product quality, improves working efficiency；The utility model is also solved existing piston structure and plunger body outer circle is caused to deform due to sleeving and riveting deformation force, and performance is improved.
Description
Technical field
A kind of the utility model category plunger pump technique field, and in particular to railway switch electrohydraulic switch machine plunger hydraulic
The spring-loaded plunger structure of pump is mainly used in railway switch electrohydraulic switch machine system.
Background technology
Plunger part is the critical component of pluger type hydraulic pump, it and cylinder bore constitute the most basic work of plunger pump and hold
Chamber.Plunger part moves back and forth in cylinder body, causes cylinder bore cavity volume size variation, promotes plunger pump oil suction, oil extraction.One
Platform plunger pump need to generally use seven sets of plungers, production requirement amount big.Plunger pump oil suction, oil extraction process are all happened at cylinder bore vessel
Interior therefore relatively high to the quality requirement of plunger part, the gap between cylinder bore is also very crucial：Gap is too small, causes
There is interim card, wear phenomenon in plunger motion；Gap is excessive, and it will cause oil leaks and efficiency to decline.Therefore, the processing technology of plunger
There is tremendous influence to plunger pump.Existing piston structure is riveted type, and as shown in Figures 9 and 10, former stopper head 8 is inserted in former plunger
After body 10, stopper head outer diameter is rushed greatly using the fabrication hole of 8 tail portion of former stopper head, to make former stopper head 8 and former plunger body 19
It is fastenedly connected.When plunger pump work, swash plate 9 contacts always with 8 bulb of former stopper head of plunger, when plunger part is rotated with cylinder body
It can be moved back and forth because the inclination angle inclined-plane of swash plate 9 is arranged, due to the bulb part of former stopper head and the swash plate contact force of plunger pump
Larger and running frequency is higher (1000rpm), therefore stopper head bulb part is required to have higher intensity and wearability, so needing
Heat treatment reinforcement is carried out to plunger ball part, but tail portion riveting cannot be really up to the mark, otherwise easy embrittlement.Due to the knot of this plunger
Structure and assembly technology limitation, this plunger can only carry out local heat treatmet, i.e., may only carry out hot place to stopper head bulb part
Reason, riveting portion cannot be heat-treated.If being heat-treated to riveting portion, some materials hardness can be made to get higher, brittleness becomes
Greatly, in riveting because stress is excessive it is possible that fracture phenomena.And it only then can only be by staff to the heat treatment of bulb part
Single every time to carry out, efficiency is low and each stopper head hardness can be caused uneven, and whole series-produced stopper head hardness also differs,
Processing quality can not all ensure.In addition, existing riveted type plunger part, makes former stopper head 8 press using the form that sleeving and riveting connects
Tight original plunger body can be because sleeving and riveting deformation cause 10 excircle part of former plunger body to deform, to cause former column during sleeving and riveting
10 excircle dimension of cock body can not ensure within the margin of tolerance, cause plunger part that can not be packed into cylinder bore or influence product
Energy.It is therefore desirable to propose to improve.
Utility model content
The technical issues of the utility model solves：A kind of bullet of railway switch electrohydraulic switch machine pluger type hydraulic pump is provided
Spring piston structure, the utility model are changed by the structure to plunger body, and plunger body is made to act as plunger camera function, plunger
Body can carry out whole heat treatment process, realize that plunger body batch heat treatment generates, cost-effective, ensure product quality, improve
Working efficiency solves existing plunger since structure and assembly technology limit, can only carry out part to the bulb part of stopper head
The problems such as low production efficiency, stopper head hardness are uneven caused by heat treatment, product quality can not ensure；This spring-loaded plunger component
Structure also solve existing piston structure from the root cause due to sleeving and riveting deformation force and caused by plunger body outer circle deform, ensure plunger
Effective assembly of body and properties of product, improve performance.
The technical solution adopted in the utility model：The spring-loaded plunger knot of railway switch electrohydraulic switch machine pluger type hydraulic pump
Structure, including plunger body, spring base, spring, steel ball seat I, steel ball and steel ball seat II；The plunger body is that one end passes through outer circle arc column
Chock plug structure is closed and the tubular structure of another end opening, and plunger body pore bottom surface is plane；The spring base is fixed on
Plunger body pore bottom, the spring one end, which stretches into plunger body pore, to be fixed on spring base, and the spring other end is cased with
Steel ball seat I, the plunger body, spring base, spring and steel ball seat I mounting structure form Monolithic spring plunger header structure；It is described
The adaptation of steel ball seat II is placed in the plunger hole of cylinder body, and plunger hole is stretched into I one end of steel ball seat of the Monolithic spring plunger header structure
In and so that steel ball is supported between steel ball seat I and steel ball seat II.
Wherein, the spring base is central axial is equipped with axis shape hole, and the spring base bottom surface is equipped with flat recess, the spring
Seat outer diameter is interference fitted with plunger body pore aperture；The spring is placed on one end internal diameter and spring base outer diameter interference on spring base
Cooperation；I outer shape of the steel ball seat be size gradually increased ladder shaft-like and with spring other end endoporus be interference fitted；Institute
State the plunger hole clearance fit of steel ball seat II and cylinder body.
Further, I axial centre of the steel ball seat is equipped with through-hole, and I one end of the steel ball seat is equipped with steel-ball limiting slot I,
II one end of the steel ball seat is equipped with steel-ball limiting slot II, and II other end of the steel ball seat is equipped with cross and leads to tank structure.
Wherein, the plunger body carries out whole heat treatment process.
The utility model compared with prior art the advantages of：
1, this programme is by being changed plunger body structure, and plunger body is made to act as plunger camera function, and plunger body can be with
Carry out whole heat treatment process, make part heat treatment hardness uniformity, Mass production is realized in plunger body heat treatment, saved at
This, ensures product quality, improves working efficiency, solves existing plunger since structure and assembly technology limit, can only be to plunger
Low production efficiency, stopper head hardness unevenness, product quality can not ensure caused by the bulb part progress local heat treatmet of head
The problems such as；
2, the structure of spring plunger assembly solves existing piston structure due to sleeving and riveting deformation force from the root cause in this programme
Plunger body outer circle caused by and deforms, and ensures effective assembly and the properties of product of plunger body, improves performance；
3, it is installed together plunger body, spring base, spring and steel ball seat I to form Monolithic spring stopper head knot in this programme
Structure makes four parts work as a whole, makes that relative rotation is not present between itself part, to reduce spring institute
The twisting resistance received；
4, it is equipped with through-hole in I axial centre of steel ball seat in this programme, can ensures pump in operation process, hydraulic oil can be with
Steel ball is lubricated by through-hole, the abrasion between steel ball and steel ball seat I is reduced with this, the final service life for extending plunger pump.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the utility model mounting structure schematic diagram in cylinder body；
Fig. 3 is spring base structural front view in the utility model；
Fig. 4 is spring base the structure left view in the utility model；
Fig. 5 is I structural front view of steel ball seat in the utility model；
Fig. 6 is II structural front view of steel ball seat in the utility model；
Fig. 7 is II the structure left view of steel ball seat in the utility model；
Fig. 8 is the using state structure diagram of the utility model；
Fig. 9 is existing plunger assembly using state structure diagram；
Figure 10 is the structural schematic diagram of existing plunger assembly.
Specific implementation mode
1-8 describes the embodiments of the present invention below in conjunction with the accompanying drawings.
The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump, as shown in Figure 1, including plunger body 1,
Spring base 2, spring 4, steel ball seat I 3, steel ball 5 and steel ball seat II 6.The plunger body 1 is that one end passes through external arc plunger header structure
The tubular structure of 101 closings and another end opening, 1 pore bottom surface of the plunger body are plane, and the plunger body 1 carries out overall thermal
Treatment process.The spring base 2 is fixed on 1 pore bottom of plunger body, 2 outer diameter of the spring base and 1 pore aperture mistake of plunger body
It is full of cooperation；As shown in Figures 3 and 4, the spring base 2 is central axial is equipped with axis shape hole 202, and 2 bottom surface of the spring base is equipped with one
Word slot 201 can be convenient for the assembly of spring base 2, prevent 2 bottom of spring base from not falling within 1 pore bottom of plunger body.The spring 4 one
End, which is stretched into 1 pore of plunger body, to be fixed on spring base 2, and the spring 4 is placed on one end internal diameter and spring base 2 on spring base 2
Outer diameter interference fit achieves a fixed connection.4 other end of the spring is cased with steel ball seat I 3, and I 3 outer shape of the steel ball seat is ruler
It is very little gradually increased ladder shaft-like and with 4 other end endoporus of spring be interference fitted.The adaptation of the steel ball seat II 6 is placed on cylinder body 7
In plunger hole 701, to prevent the plunger hole 701 of cylinder body 7 from scratching, the steel ball seat II 6 and 701 gap of plunger hole of cylinder body 7 are matched
It closes, and is equipped with cross in II 6 other end of the steel ball seat and leads to tank structure 601, as shown in Figures 6 and 7.The plunger body 1, spring
The mounting structure of seat 2, spring 4 and steel ball seat I 3 forms Monolithic spring plunger header structure, the Monolithic spring plunger header structure
I 3 one end of steel ball seat is stretched into plunger hole 701 and steel ball 5 is made to be supported between steel ball seat I 3 and steel ball seat II 6.The utility model
Plunger body 1, spring base 2, spring 4, steel ball seat I 3 will be worked as a whole, and make that phase will be not present between itself part
To rotation, to reduce the twisting resistance suffered by spring
As shown in figure 5, I 3 axial centre of the steel ball seat is equipped with through-hole 301, I 3 one end of the steel ball seat is limited equipped with steel ball
Position slot I 302, as shown in Figures 6 and 7, II 6 one end of the steel ball seat is equipped with steel-ball limiting slot II 602.In I 3 axial centre of steel ball seat
Equipped with through-hole 301, it can ensure pump in operation process, hydraulic oil can lubricate steel ball by through-hole 301, be reduced with this
Abrasion between steel ball and steel ball seat I, the final service life for extending plunger pump.
Steps are as follows for spring-loaded plunger Standard：As shown in Fig. 2, Monolithic spring plunger header structure is assembled first, first by bullet
Spring abutment 2 is inserted in 1 pore bottom of plunger body, then spring 4 is inserted on spring base 2, then steel ball seat I 3 is inserted in spring 4；It connects
It and steel ball seat II 6 is fitted into the plunger hole 701 of cylinder body 7, and be put into steel ball 5；The Monolithic spring stopper head that will finally assemble
I 3 one end of steel ball seat of structure is packed into the plunger hole 701 of cylinder body 7, and steel ball 5 is made to be placed between steel ball seat I 3 and steel ball seat II 6.
Then plunger pump swash plate and the assembly of other parts are completed according to a conventional method, as shown in figure 8, composition plunger pump.
The utility model is changed by the structure to plunger body 1, so that plunger body 2 is acted as plunger camera function, is made column
Cock body 1 can carry out whole heat treatment process, realize that plunger body is heat-treated Mass production, cost-effective, ensure product quality, carry
High working efficiency, solves existing plunger since structure and assembly technology limit, can only be to the bulb part carry out office of stopper head
The problems such as low production efficiency, stopper head hardness are uneven caused by portion's heat treatment, product quality can not ensure；This plunger assembly knot
Structure also solve existing piston structure from the root cause due to sleeving and riveting deformation force and caused by plunger body outer circle deform, ensure plunger body
It is effective assembly and properties of product, improve performance.
Above-described embodiment, the only preferred embodiment of the utility model are not used for limiting the utility model practical range,
Therefore all equivalence changes done with content described in the utility model claims, the utility model claims model should all be included in
Within enclosing.
Claims (4)
1. the spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump, it is characterised in that：Including plunger body
(1), spring base (2), spring (4), steel ball seat I (3), steel ball (5) and steel ball seat II (6)；The plunger body (1) passes through for one end
External arc plunger header structure (101) is closed and the tubular structure of another end opening, and plunger body (1) the pore bottom surface is plane；
The spring base (2) is fixed on plunger body (1) pore bottom, and described spring (4) one end, which is stretched into plunger body (1) pore, to be fixed on
On spring base (2), spring (4) other end is cased with steel ball seat I (3), the plunger body (1), spring base (2), spring (4) and
The mounting structure of steel ball seat I (3) forms Monolithic spring plunger header structure；The steel ball seat II (6) is adapted to the column for being placed on cylinder body (7)
In consent (701), steel ball seat I (3) one end of the Monolithic spring plunger header structure is stretched into plunger hole (701) and makes steel ball
(5) it is placed between steel ball seat I (3) and steel ball seat II (6).
2. the spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump according to claim 1, special
Sign is：The spring base (2) is central axial to be equipped with axis shape hole (202), and spring base (2) bottom surface is equipped with flat recess
(201), spring base (2) outer diameter is interference fitted with plunger body (1) pore aperture；The spring (4) is placed on spring base (2)
One end internal diameter and spring base (2) outer diameter be interference fitted；The steel ball seat I (3) outer shape is size gradually increased ladder
Shaft-like and with spring (4) other end endoporus be interference fitted；The steel ball seat II (6) and plunger hole (701) gap of cylinder body (7) are matched
It closes.
3. the spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump according to claim 1, special
Sign is：The steel ball seat I (3) axial centre is equipped with through-hole (301), and the steel ball seat I (3) one end is equipped with steel-ball limiting slot I
(302), the steel ball seat II (6) one end is equipped with steel-ball limiting slot II (602), and the steel ball seat II (6) other end is equipped with cross
Logical tank structure (601).
4. the spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump according to claim 1, special
Sign is：The plunger body (1) carries out whole heat treatment process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820497506.1U CN208073744U (en) | 2018-04-10 | 2018-04-10 | The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820497506.1U CN208073744U (en) | 2018-04-10 | 2018-04-10 | The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump |
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| Publication Number | Publication Date |
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| CN208073744U true CN208073744U (en) | 2018-11-09 |
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| CN201820497506.1U Active CN208073744U (en) | 2018-04-10 | 2018-04-10 | The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223355A (en) * | 2018-04-10 | 2018-06-29 | 宝鸡和新机电设备有限公司 | The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump |
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2018
- 2018-04-10 CN CN201820497506.1U patent/CN208073744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223355A (en) * | 2018-04-10 | 2018-06-29 | 宝鸡和新机电设备有限公司 | The spring-loaded plunger structure of railway switch electrohydraulic switch machine pluger type hydraulic pump |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190109 Address after: 721016 Yongqing Industrial Park No. 50, Maying Town, Baoji High-tech Development Zone, Shaanxi Province Co-patentee after: Taiyuan Jingfeng Railway Electricity Equipment Manufacturing Co., Ltd. Patentee after: Baoji Hexin Electromechanical Device Co., Ltd. Address before: 721016 Yongqing Industrial Park No. 50, Maying Town, Baoji High-tech Development Zone, Shaanxi Province Patentee before: Baoji Hexin Electromechanical Device Co., Ltd. |