CN203906250U - Combined plunger slide shoe - Google Patents
Combined plunger slide shoe Download PDFInfo
- Publication number
- CN203906250U CN203906250U CN201420242434.8U CN201420242434U CN203906250U CN 203906250 U CN203906250 U CN 203906250U CN 201420242434 U CN201420242434 U CN 201420242434U CN 203906250 U CN203906250 U CN 203906250U
- Authority
- CN
- China
- Prior art keywords
- crawler shoe
- slide shoe
- shoe body
- combined plunger
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a combined plunger slide shoe. The combined plunger slide shoe comprises a slide shoe body with a plunger head portion connection groove, wherein a slide shoe bottom made from nylon is fastened and connected to the lower end of the slide shoe body; the lower end surface of the slide shoe body is a pressure-bearing surface connected with an inclined disc; the fastened-connected structure of the lower end of the slide shoe body and the slide shoe bottom is a thread connection structure, that is, an external thread is opened on the outer diameter of the lower end of the slide shoe body, a thread hole matched with the outer thread at the lower end of the slide shoe body is formed in the slide shoe bottom; the slide shoe body is fixedly connected with the slide shoe bottom by a thread connection structure. The combined plunger slide shoe has the advantages that the machining difficulty of the pressure-bearing area channel of the slide shoe is lowered, and the friction between the bottom of the small slide shoe and the inclined disc is reduced, thus avoiding the ablation fault of the slide shoe due to the serious friction between the slide shoe and the inclined disc, and prolonging the service life of the slide shoe.
Description
Technical field
The utility model relates to cam-type axial piston pump component, particularly a kind of Combined plunger piston crawler shoe.
Background technique
Cam-type axial piston pump is that one is utilized plunger to-and-fro motion in cylinder body, making plunger and casing wall form volume changes, repeatedly suck and discharge liquid and increase the pump of its pressure, plunger head and crawler shoe fit, between crawler shoe and swash plate, contact by oil film, through damping hole throttling regulating action, change oil slick thickness, reach the effect of hydrostatic support.Conventionally crawler shoe is integral type structure; its material is bronze, and crawler shoe confined area groove processing is difficulty comparatively, and due to the rotation of crawler shoe and the circular movement on swash plate; friction meeting between crawler shoe bottom and swash plate is very large, and the fault of ablation crawler shoe even can occur when serious.Therefore, a kind of crawler shoe that is easy to processing and can improve frictional behavior between crawler shoe and swash plate is particularly important for plunger pump design.
Model utility content
The purpose of this utility model is just to provide a kind of difficulty that reduces crawler shoe confined area groove processing, reduce the friction of crawler shoe bottom and swash plate simultaneously, avoid the crawler shoe ablation fault causing because of friction serious between crawler shoe and swash plate, extend the crawler shoe Combined plunger piston crawler shoe in working life.
Solution of the present utility model is such:
A kind of Combined plunger piston crawler shoe, comprise with the crawler shoe body of plunger head connecting groove, at the bottom of described crawler shoe body lower end is fastenedly connected with the crawler shoe that nylon is material, the lower end surface at the bottom of described crawler shoe is the pressure-bearing surface being connected with swash plate.
Technological scheme also comprises more specifically: the fastening structure at the bottom of described crawler shoe body lower end and crawler shoe is screw connection structure, be that described crawler shoe body lower end external diameter has outside thread, the tapped hole matching with described crawler shoe body lower end outside thread at the bottom of described crawler shoe, adopts screw connection structure that crawler shoe body is fixedly connected with at the bottom of crawler shoe.
Further: between the tapped hole bottom at the bottom of described crawler shoe body bottom and described crawler shoe, to be provided with for bonding sealer.
Further: being provided with damping orifice at the bottom of described crawler shoe body, crawler shoe and in the overall structure that connects into of sealer, at the bottom of on described damping orifice, hydraulic fluid port is positioned at crawler shoe body and plunger head connecting groove, lower hydraulic fluid port is positioned at the pressure-bearing surface of end under crawler shoe.
Further: the bottom pressure-bearing surface at the bottom of described crawler shoe has at least two grooves, described damping orifice is communicated with at least one groove wherein.
The utility model has the advantages that the difficulty that has reduced crawler shoe confined area groove processing, reduce the friction of crawler shoe bottom and swash plate simultaneously, avoid the crawler shoe ablation fault that causes because of friction serious between crawler shoe and swash plate, extend the working life of crawler shoe.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, at the bottom of described crawler shoe body 1 lower end and crawler shoe, 2 fastening structure is screw connection structure, be that described crawler shoe body 1 lower end external diameter has outside thread, 2 tapped holes that match with described crawler shoe body 1 lower end outside thread at the bottom of described crawler shoe, adopt screw connection structure that crawler shoe body 12 is fixedly connected with at the bottom of crawler shoe, at the bottom of described crawler shoe, 2 lower end surface is the pressure-bearing surface being connected with swash plate.
At the bottom of described crawler shoe body 1 bottom and described crawler shoe, between 2 tapped hole bottom, be provided with for bonding sealer 4, by sealer 4 by crawler shoe body 1, crawler shoe at the bottom of 2 bonding connections be entirety.
At the bottom of described crawler shoe body 1, crawler shoe 2 and the overall structure that connects into of sealer 4 in be provided with damping orifice A, the upper hydraulic fluid port of described damping orifice A is positioned at crawler shoe body 1 with at the bottom of plunger head connecting groove, lower hydraulic fluid port is positioned at the pressure-bearing surface of 2 lower ends at the bottom of crawler shoe, at the bottom of described crawler shoe, 2 bottom pressure-bearing surface has three grooves 3, and described damping orifice A is communicated with a middle groove 3.
At the bottom of crawler shoe, 2 are made up of nylon 6 materials, because nylon 6 has good mechanical strength, wear resistance and hygroscopicity, can significantly reduce at the bottom of crawler shoe 2 and swash plate between friction, and there will not be the dry friction phenomenon producing because of oil film breakdown.At the bottom of crawler shoe taking nylon 6 as material, 2 can adopt the molded mode of injection mould to produce in batches, the groove of confined area 3 is compression molding simultaneously also, only need machining internal thread, solved the difficult problem of the existing integral type crawler shoe confined area groove processing taking bronze as material.At the bottom of crawler shoe body 1 and crawler shoe, between 2, adopt screw thread 5 to be connected, bonding by sealer 4 between 2 at the bottom of crawler shoe body 1 lower surface and crawler shoe, both are fastenedly connected.The maximum outside diameter of crawler shoe is about 34mm, roughly the same with existing overall crawler shoe size.
Claims (5)
1. a Combined plunger piston crawler shoe, comprise with the crawler shoe body (1) of plunger head connecting groove, it is characterized in that: described crawler shoe body (1) lower end is fastenedly connected with (2) at the bottom of the crawler shoe that nylon is material, and at the bottom of described crawler shoe, the lower end surface of (2) is the pressure-bearing surface being connected with swash plate.
2. Combined plunger piston crawler shoe according to claim 1, it is characterized in that: at the bottom of described crawler shoe body (1) lower end and crawler shoe, the fastening structure of (2) is screw connection structure, be that described crawler shoe body (1) lower end external diameter has outside thread, the tapped hole that at the bottom of described crawler shoe, match with described crawler shoe body (1) lower end outside thread (2), adopts screw connection structure that crawler shoe body (1) is fixedly connected with (2) at the bottom of crawler shoe.
3. Combined plunger piston crawler shoe according to claim 2, is characterized in that: at the bottom of described crawler shoe body (1) bottom and described crawler shoe, between the tapped hole bottom of (2), be provided with for bonding sealer (4).
4. Combined plunger piston crawler shoe according to claim 3, it is characterized in that: in the overall structure that (2) at the bottom of described crawler shoe body (1), crawler shoe and sealer (4) connect into, be provided with damping orifice (A), the upper hydraulic fluid port of described damping orifice (A) is positioned at crawler shoe body (1) with at the bottom of plunger head connecting groove, the pressure-bearing surface of (2) lower end at the bottom of lower hydraulic fluid port is positioned at crawler shoe.
5. Combined plunger piston crawler shoe according to claim 4, is characterized in that: at the bottom of described crawler shoe, the bottom pressure-bearing surface of (2) has at least two grooves (3), and described damping orifice (A) is communicated with at least one groove (3) wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242434.8U CN203906250U (en) | 2014-05-13 | 2014-05-13 | Combined plunger slide shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242434.8U CN203906250U (en) | 2014-05-13 | 2014-05-13 | Combined plunger slide shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906250U true CN203906250U (en) | 2014-10-29 |
Family
ID=51780535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420242434.8U Expired - Fee Related CN203906250U (en) | 2014-05-13 | 2014-05-13 | Combined plunger slide shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906250U (en) |
-
2014
- 2014-05-13 CN CN201420242434.8U patent/CN203906250U/en not_active Expired - Fee Related
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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: 20141029 Termination date: 20210513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |