CN209145785U - A kind of pre-tightening mechanism for determining gap return structures plunger pump - Google Patents
A kind of pre-tightening mechanism for determining gap return structures plunger pump Download PDFInfo
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- CN209145785U CN209145785U CN201822125668.5U CN201822125668U CN209145785U CN 209145785 U CN209145785 U CN 209145785U CN 201822125668 U CN201822125668 U CN 201822125668U CN 209145785 U CN209145785 U CN 209145785U
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- piston shoes
- cylinder body
- plunger
- flexural pivot
- return plate
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Abstract
The utility model discloses a kind of pre-tightening mechanisms for determining gap return structures plunger pump, including being equipped with the cylinder body of plunger and return plate being installed in the briquetting waved, piston shoes are hinged on the bulb of plunger, piston shoes are sleeved in the piston shoes hole of return plate, the sealing bottom surface of cylinder body is fitted with oil distribution casing, flexural pivot is set on the cylindricality convex shoulder of cylinder body, the spherical cambered surface of flexural pivot is hingedly matched with the fraising rotation of the astrosphere of return plate, flexural pivot is machined with transmission axis hole, transmission axis hole is expanding to be machined with stepped hole, butterfly spring is pressed between the circular table of cylindricality convex shoulder and the step surface of stepped hole, butterfly spring is while tension forces cylinder body to press oil distribution casing and forms initial sealing, tension forces flexural pivot that return plate is pushed to be pressed on piston shoes and waves, initial sealing is formed between making piston shoes and the mating surface waved.The utility model is compact-sized, easy for installation, and can guarantee the initial sealing of cylinder body and oil distribution casing matched pasta and piston shoes and wave mating surface simultaneously.
Description
Technical field
The utility model relates to the designing techniques of hydraulic motor, determine the pre- of gap return structures plunger pump more particularly to a kind of
Tight mechanism.
Background technique
Fig. 1 is a kind of design structure of plunger pump in the prior art, as shown, the plunger pump will be pressed using screw
Block, which is fixed on, to wave, and with the freedom degree of constant clearance control backhaul, piston shoes is made to drive the design structure of plunger backhaul, the structure
Middle spiral spring is sleeved on transmission shaft, the shaft shoulder of the upper end of spiral spring through Upper gasket apical grafting on transmission shaft, spiral
Lower end phase apical grafting of the lower end of formula spring through lower gasket and hole retaining ring and cylinder body, spiral spring can be pre- using the elasticity of itself
Cylinder body is tightly pressed on oil distribution casing by compaction forces, guarantees the initial sealing of cylinder body and oil distribution casing.But it is this using spiral
Spring realizes the design structure pre-tightened, since load is small, and occupies that volume is big, therefore for the batter post consent cylinder body of compact
For and be not suitable for.
Summary of the invention
Technical problem to be solved in the utility model be in view of the above-mentioned state of the art, and provide design rationally,
It is small in size, compact-sized, and a kind of pre-tightening mechanism for determining gap return structures plunger pump motor compared with big load can be born.
Technical solution adopted by the utility model to solve the above technical problems is as follows:
A kind of pre-tightening mechanism for determining gap return structures plunger pump, including be equipped in plunger cavity plunger cylinder body and with perseverance
Return plate is installed in the briquetting waved by fixed gap, and the piston shoes for driving plunger motion are hinged on the bulb of plunger,
Piston shoes are sleeved in the piston shoes hole of return plate, and the sealing bottom surface of cylinder body is fitted with oil distribution casing, on the cylindricality convex shoulder of cylinder body actively
It is set with flexural pivot, the spherical cambered surface of flexural pivot is hingedly matched with the fraising rotation of the astrosphere of return plate, and flexural pivot is axially through being machined with
The transmission axis hole of cooperation, the expanding step being machined with the suit cooperation of the cylindricality convex shoulder of cylinder body of transmission axis hole are worn with transmission shaft
Hole, has been pressed with the butterfly spring of preload effect between the circular table of cylindricality convex shoulder and the step surface of stepped hole, butterfly spring exists
While tension forces cylinder body to press oil distribution casing formation initial sealing, tension forces flexural pivot that return plate is pushed to be pressed on piston shoes and shakes
It lays out, forms initial sealing between making piston shoes and the mating surface waved.
To optimize above-mentioned technical proposal, the measure taken further include:
Pad is furnished with gasket between the circular table of above-mentioned butterfly spring and cylindricality convex shoulder.
The bar shaped tooth for engaging connection with transmission shaft is axially machined on the inner wall of above-mentioned transmission axis hole.
Compared with prior art, the utility model is set with flexural pivot on the cylindricality convex shoulder of cylinder body, the stepped hole of flexural pivot with
It has been pressed with the butterfly spring of preload effect between the circular table of cylindricality convex shoulder, can have been made using the spring tension of butterfly spring by cylinder
Body is tightly pressed on oil distribution casing, ensure that cylinder body and oil distribution casing match the initial sealing of pasta；The bullet of butterfly spring is utilized simultaneously
Piston shoes can also be tightly pressed at and be waved by flexural pivot, return plate by spring tension, be ensure that piston shoes and waved the initial of mating surface
Sealing.
The advantages of the utility model and effect are:
1, the initial sealing with pasta, piston shoes and the mating surface waved that can guarantee cylinder body and oil distribution casing simultaneously, mentions significantly
The high volumetric efficiency of plunger pump.
2, since butterfly spring stroke is short, load is heavy and small in size, volume can be replaced biggish with lesser several
Helical spring effectively reduces the volume and weight of plunger pump cylinder body.
3, butterfly spring+flexural pivot structure is simple, easy for installation, can substantially reduce installation cost and maintenance cost.
4, butterfly spring rigidity is big, and buffering damping capaicty is strong, can effectively increase the stability of plunger pump operation.
5, butterfly spring long service life can effectively improve the service life of plunger pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional plunger pump motor pre-tightening mechanism；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of the utility model flexural pivot；
Fig. 4 is the partial enlargement diagram in Fig. 2 at K.
Specific embodiment
The embodiments of the present invention are described in further detail below in conjunction with attached drawing.
Fig. 2 to Fig. 4 is the structural schematic diagram of the utility model.
Appended drawing reference therein are as follows: gasket D, cylinder body 1, plunger cavity 1a, cylindricality convex shoulder 11, circular table 11a, plunger 2, return
Journey disk 3, wave 4, briquetting 5, piston shoes 6, oil distribution casing 7, flexural pivot 8, transmission axis hole 8a, stepped hole 8b, step surface 8c, bar shaped tooth 81,
Butterfly spring 9.
As shown, a kind of pre-tightening mechanism for determining gap return structures plunger pump of the utility model, including in plunger cavity 1a
The cylinder body 1 of plunger 2 is installed and return plate 3, waves 4, briquetting 5, piston shoes 6 and oil distribution casing 7.Briquetting 5 is fixed by screws in
It waves on 4, return plate 3 is installed in constant gap and is waved on 4 by briquetting 5, and return plate 3 is made to have limited freedom
Degree.The bulb of piston shoes 6 and plunger 2 suit is hinged, so that piston shoes 6 is rotated relative to bulb, piston shoes 6 are by pulling bulb to drive plunger
2 in plunger cavity 1a reciprocating realization pump oil, piston shoes 6 be sleeved in the piston shoes hole of return plate 3.Oil distribution casing 7 closely pastes
It is each plunger cavity 1a with oil in the bottom surface of cylinder body 1, the center of cylinder body 1 is equipped with axis hole, is coated in axis hole and cylinder body 1 is driven to rotate
Transmission shaft.Transmission shaft is not shown in Fig. 2 of the utility model.
The innovative point of the utility model is, flexural pivot 8 is actively set on the cylindricality convex shoulder 11 of cylinder body 1, flexural pivot 8
Spherical cambered surface is hingedly matched with the fraising rotation of the astrosphere of return plate 3, to guarantee 3 revolution axle center of return plate.Flexural pivot 8 axially through
It is machined with the transmission axis hole 8a that cooperation is worn with transmission shaft, expanding 11 sets of cylindricality convex shoulder be machined with cylinder body 1 of transmission axis hole 8a
The stepped hole 8b closed is assembled, preload has been pressed between the step surface 8c of the circular table 11a and stepped hole 8b of cylindricality convex shoulder 11 and has been made
Butterfly spring 9, while tension forces cylinder body 1 to press oil distribution casing 7 and forms initial sealing, tension forces butterfly spring 9
Flexural pivot 8 pushes return plate 3 to be pressed on piston shoes 6 and waves on 4, makes to form initial sealing between piston shoes 6 and the mating surface for waving 4.
The utility model is pressed with butterfly spring 9 between the circular table 11a of cylinder body 1 and the step surface 8c of flexural pivot 8, with benefit
Guaranteed simultaneously with the spring force of butterfly spring cylinder body 1 and oil distribution casing 7 to match pasta, piston shoes 6 initial close with the mating surface of waving 4
Envelope, substantially increases the volumetric efficiency of plunger pump.
In embodiment, pad is furnished with gasket D between the circular table 11a of butterfly spring 9 and cylindricality convex shoulder 11.
The bar shaped tooth 81 for engaging connection with transmission shaft is axially machined on the inner wall of transmission axis hole 8a.81 energy of bar shaped tooth
It is meshed with the rack gear on transmission shaft, to make flexural pivot 8 and cylinder body 1 that can rotate together with transmission shaft.
The most preferred embodiment of the utility model has illustrated, the various change or remodeling made by those of ordinary skill in the art
All without departing from the scope of the utility model.
Claims (3)
1. a kind of pre-tightening mechanism for determining gap return structures plunger pump, the cylinder body (1) including being equipped with plunger (2) in plunger cavity (1a)
And return plate (3) is installed in the briquetting (5) waved on (4) with constant gap, on the bulb of the plunger (2)
The piston shoes (6) for driving plunger (2) movement are hinged with, the piston shoes (6) are sleeved in the piston shoes hole of return plate (3), the cylinder
The sealing bottom surface of body (1) is fitted with oil distribution casing (7), it is characterized in that: actively covering on the cylindricality convex shoulder (11) of the cylinder body (1)
Equipped with flexural pivot (8), the spherical cambered surface of the flexural pivot (8) is hingedly matched with the fraising rotation of the astrosphere of return plate (3), described
Flexural pivot (8) wears the transmission axis hole (8a) of cooperation axially through being machined with transmission shaft, and the transmission axis hole (8a) is expanding to be added
Work has the stepped hole (8b) with the cylindricality convex shoulder (11) of cylinder body (1) suit cooperation, the circular table of the cylindricality convex shoulder (11)
The butterfly spring (9) of preload effect, the butterfly spring have been pressed between the step surface (8c) of (11a) and stepped hole (8b)
(9) while tension forces cylinder body (1) to press oil distribution casing (7) and forms initial sealing, tension forces flexural pivot (8) to push return plate
(3) piston shoes (6) are pressed on and are waved on (4), make to form initial sealing between piston shoes (6) and the mating surface for waving (4).
2. a kind of pre-tightening mechanism for determining gap return structures plunger pump according to claim 1, it is characterized in that: the butterfly
Pad is furnished with gasket (D) between spring (9) and the circular table (11a) of cylindricality convex shoulder (11).
3. a kind of pre-tightening mechanism for determining gap return structures plunger pump according to claim 2, it is characterized in that: the transmission
The bar shaped tooth (81) for engaging connection with transmission shaft is axially machined on the inner wall of axis hole (8a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125668.5U CN209145785U (en) | 2018-12-18 | 2018-12-18 | A kind of pre-tightening mechanism for determining gap return structures plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125668.5U CN209145785U (en) | 2018-12-18 | 2018-12-18 | A kind of pre-tightening mechanism for determining gap return structures plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209145785U true CN209145785U (en) | 2019-07-23 |
Family
ID=67290423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822125668.5U Active CN209145785U (en) | 2018-12-18 | 2018-12-18 | A kind of pre-tightening mechanism for determining gap return structures plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209145785U (en) |
-
2018
- 2018-12-18 CN CN201822125668.5U patent/CN209145785U/en active Active
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