CN203189259U - Connecting structure of plunger piston pair and pump body - Google Patents
Connecting structure of plunger piston pair and pump body Download PDFInfo
- Publication number
- CN203189259U CN203189259U CN 201320189842 CN201320189842U CN203189259U CN 203189259 U CN203189259 U CN 203189259U CN 201320189842 CN201320189842 CN 201320189842 CN 201320189842 U CN201320189842 U CN 201320189842U CN 203189259 U CN203189259 U CN 203189259U
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- CN
- China
- Prior art keywords
- hole
- setting sleeve
- plunger
- pump housing
- bolt
- 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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Abstract
The utility model discloses a connecting structure of a plunger piston pair and a pump body. The connecting structure of the plunger piston pair and the pump body comprises a plunger piston (1), a spring (2), a plunger piston sleeve (3), bolts, locating sleeves (3.4) and the pump body (4). Bolt holes (3.3) are formed in the two sides of the plunger piston sleeve (3), the upper ends of the locating sleeves (3.4) are embedded in the lower portions of the bolt holes (3.3), the lower ends of the locating sleeves (3.4) are arranged in locating holes (4.1) of the pump body (4), the bolts penetrate through the locating sleeves (3.4) and are screwed in threaded holes (4.2) in the pump body (4), and the upper end wall (3.2), provided with the bolt holes (3.3), of the plunger piston sleeve (3) is lower than the upper end wall (3.1), provided with the plunger piston holes, of the plunger piston sleeve (3). The connecting structure of the plunger piston pair and the pump body is good in fixing performance, high in using efficiency, long in life, less in materials, low in manufacturing cost and light in weight.
Description
Technical field
The utility model relates to hydraulic element, specifically is a kind of trunk piston set and pump housing linkage structure.
Background technique
Trunk piston set is parts in the plunger pump, present trunk piston set generally comprises plunger, plunger bushing and bolt, plunger is slidingly matched with plunger bushing under the oil pressure effect, the bolt hole of the oil outlet both sides on described bolt and the plunger bushing cooperates, the side of plunger bushing is provided with oil outlet, is provided with outlet valve in the oil outlet.Adopt the trunk piston set of this kind structure, following deficiency arranged:
1, use the bolt trunk piston set to the pump housing, in actual use, because vibrations are bigger, long-term use can cause bolt looseness, make trunk piston set and the pump housing that relative Horizontal displacement take place, cause force application device not influence utilization efficiency to the plunger forward application of force, the phenomenon of eccentric wear may appear in plunger bushing, has seriously influenced the life-span of plunger.
2, because the upper end wall of the upper end wall of bolt hole place plunger bushing and plunger hole place plunger bushing on same horizontal line, so materials cause manufacture cost height, Heavy Weight more.
The model utility content
Technical problem to be solved in the utility model is: overcome the defective of above prior art, provide a kind of manufacturing in light weight, stationarity is good, the life-span is long trunk piston set and pump housing linkage structure.
Technical solution adopted in the utility model is: the linkage structure that a kind of trunk piston set and the pump housing are provided, it comprises plunger, spring, plunger bushing, bolt and the pump housing, described plunger is slidingly fitted in the plunger bushing, described bolt passes the bolt hole on the plunger bushing, screw in the tapped hole on the pump housing, the linkage structure of described trunk piston set and the pump housing also comprises setting sleeve, described bolt hole bottom is embedded with the upper end of setting sleeve, the lower end of setting sleeve is in the positioning hole of the pump housing, and described bolt passes setting sleeve.
After adopting above structure, the linkage structure of the utility model trunk piston set and the pump housing compared with prior art has the following advantages:
Employing setting sleeve location, setting sleeve is pressed into plunger bushing during installation, be connected with the pump housing again, guarantee trunk piston set not occurred level displacement in use, guarantee that force application device is to the correct application of force of trunk piston set, improve the utilization efficiency of pump, reduce the stuck phenomenon of trunk piston set that causes owing to the trunk piston set displacement.
As improvement, the upper end wall of described bolt hole place plunger bushing is lower than the upper end wall of plunger hole place plunger bushing, can reduce the logical wall thickness of plunger simultaneously, reduces the materials of plunger bushing, reduces cost weight reduction.
As improvement, the position that the upper end wall of described bolt hole place plunger bushing is lower than the upper end wall of plunger hole place plunger bushing is no more than half of plunger bushing height.
As improvement, described bolt passes setting sleeve and refers to that the hole in the setting sleeve is unthreaded hole, screw thread is arranged in the bolt hole, and the internal diameter of setting sleeve is greater than the big footpath of bolt hole internal thread.
As improvement, described bolt passes setting sleeve and refers to that there is screw thread in the hole in the setting sleeve, screw thread is also arranged in the bolt hole, and the setting sleeve internal thread is identical with the bolt hole internal thread.
As improvement, described bolt passes setting sleeve and refers to that the hole in the setting sleeve is unthreaded hole, and bolt hole also is unthreaded hole, and the internal diameter of setting sleeve is identical with the internal diameter of bolt hole.
As improvement, described bolt passes setting sleeve and refers to that the hole in the setting sleeve is tapped hole, and bolt hole is unthreaded hole, and the big footpath of the screw thread of setting sleeve endoporus is less than the internal diameter of bolt hole.
Description of drawings
Fig. 1 is the complete section schematic representation of plan view of the present utility model.
Fig. 2 is plan view of the present utility model.
Fig. 3 be among Fig. 2 B-B to the sectional structure schematic representation.
Among Fig. 1,3.1, the upper end wall of plunger hole place plunger bushing, 3.2, the upper end wall of bolt hole place plunger bushing, 3.3, bolt hole, 3.4, setting sleeve, 4, the pump housing, 4.1, positioning hole, 4.2 tapped holes.
Among Fig. 3,1, plunger, 2, spring, 3, plunger bushing.
Described orientation all is benchmark with Fig. 1 herein.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model provides the linkage structure of a kind of trunk piston set and the pump housing, comprise plunger 1, spring 2, plunger bushing 3, bolt, setting sleeve 3.4 and the pump housing 4, plunger 1 is slidingly fitted in the plunger bushing 3, the both sides of described plunger bushing 3 are provided with bolt hole 3.3 and are used for construction bolt and setting sleeve 3.4 for shoulder hole, and described setting sleeve 3.4 is pressed into plunger bushing 3, prevent trunk piston set occurred level displacement in use, setting sleeve 3.4 axially has through hole, is used for construction bolt.
The utility model reduces the upper end wall 8mm of bolt hole 3.3 place plunger bushings during fabrication, can make the plunger hole wall thickness be reduced to 5.5 mm by 8 original mm.During assembling, setting sleeve 3.4 is pressed in the big footpath of shoulder hole of plunger bushing 3, setting sleeve 3.4 is no more than 0.06 with the coaxality of bolt hole 3.3, again with the complete precession bolt hole 3.3 of bolt, screws in the tapped hole 4.2 on the pump housing 4.During work, the pump housing 4 centers are provided with a force application device, as the bent axle of a rotation, when bent axle to the plunger application of force, realize that oil outlet is fuel-displaced.Because the reinforcement effect of both sides setting sleeve, trunk piston set are difficult for displacement in pump housing using process, can guarantee force application device to the plunger forward application of force, improve the utilization efficiency of trunk piston set.
More than be described with regard to the utility model preferred embodiment, but can not be interpreted as it is limitations on claims.The utility model not only is confined to above embodiment, and its concrete structure allows to change, as: the upper end wall of described bolt hole place plunger bushing can be reduced to half of plunger bushing thickness; Described plunger hole wall thickness can also be other numerical value among the 3mm-8mm; Described force application device also can be cam etc., and all various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (7)
1. the linkage structure of a trunk piston set and the pump housing, it comprises plunger (1), spring (2), plunger bushing (3), bolt and the pump housing (4), described plunger (1) is slidingly fitted in the plunger bushing (3), described bolt passes the bolt hole (3.3) on the plunger bushing (3), screw in the tapped hole (4.2) on the pump housing (4), it is characterized in that: it also comprises setting sleeve (3.4), described bolt hole (3.3) bottom is embedded with the upper end of setting sleeve (3.4), the lower end of setting sleeve (3.4) the positioning hole (4.1) of the pump housing (4) in, described bolt passes setting sleeve (3.4).
2. the linkage structure of trunk piston set according to claim 1 and the pump housing, it is characterized in that: the upper end wall (3.2) of described bolt hole (3.3) place plunger bushing (3) is lower than the upper end wall (3.1) of plunger hole place plunger bushing (3).
3. the linkage structure of trunk piston set according to claim 2 and the pump housing is characterized in that: the position that the upper end wall (3.2) of described bolt hole (3.3) place plunger bushing (3) is lower than the upper end wall (3.1) of plunger hole place plunger bushing (3) is no more than highly half of (H) of plunger bushing (3).
4. according to the linkage structure of claim 1 or 2 or 3 described trunk piston set and the pump housing, it is characterized in that: described bolt passes setting sleeve (3.4) and refers to that the hole in the setting sleeve (3.4) is unthreaded hole, bolt hole has screw thread in (3.3), and the internal diameter of setting sleeve (3.4) is greater than the big footpath of bolt hole (3.3) internal thread.
5. according to the linkage structure of claim 1 or 2 or 3 described trunk piston set and the pump housing, it is characterized in that: described bolt passes setting sleeve (3.4) and refers to that there is screw thread in the hole in the setting sleeve (3.4), bolt hole also has screw thread in (3.3), and setting sleeve (3.4) internal thread is identical with bolt hole (3.3) internal thread.
6. according to the linkage structure of claim 1 or 2 or 3 described trunk piston set and the pump housing, it is characterized in that: described bolt passes setting sleeve (3.4) and refers to that the hole in the setting sleeve (3.4) is unthreaded hole, bolt hole (3.3) also is unthreaded hole, and the internal diameter of setting sleeve (3.4) is identical with the internal diameter of bolt hole (3.3).
7. according to the linkage structure of claim 1 or 2 or 3 described trunk piston set and the pump housing, it is characterized in that: described bolt passes setting sleeve (3.4) and refers to that the hole in the setting sleeve (3.4) is tapped hole, bolt hole (3.3) is unthreaded hole, and the big footpath of the screw thread of setting sleeve (3.4) endoporus is less than the internal diameter of bolt hole (3.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189842 CN203189259U (en) | 2013-04-16 | 2013-04-16 | Connecting structure of plunger piston pair and pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189842 CN203189259U (en) | 2013-04-16 | 2013-04-16 | Connecting structure of plunger piston pair and pump body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189259U true CN203189259U (en) | 2013-09-11 |
Family
ID=49106122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320189842 Expired - Fee Related CN203189259U (en) | 2013-04-16 | 2013-04-16 | Connecting structure of plunger piston pair and pump body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189259U (en) |
-
2013
- 2013-04-16 CN CN 201320189842 patent/CN203189259U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20160416 |