CN204729284U - Be applicable to axle flow supporting structure and the axle flow hydraulic radial pump/motor of hydraulic radial pump/motor - Google Patents

Be applicable to axle flow supporting structure and the axle flow hydraulic radial pump/motor of hydraulic radial pump/motor Download PDF

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Publication number
CN204729284U
CN204729284U CN201520443371.7U CN201520443371U CN204729284U CN 204729284 U CN204729284 U CN 204729284U CN 201520443371 U CN201520443371 U CN 201520443371U CN 204729284 U CN204729284 U CN 204729284U
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China
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pintle
motor
cylinder body
pump
housing
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CN201520443371.7U
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Chinese (zh)
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荆崇波
苑士华
胡纪滨
李雪原
周俊杰
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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Abstract

The utility model provides a kind of the axle flow supporting structure and the axle flow hydraulic radial pump/motor that are applicable to hydraulic radial pump/motor, belongs to Fluid Transmission and Control technical field.Pintle in axle flow hydraulic radial pump/motor is adopted to the dual-support structure of static pressure and bearing fit, in order to solve gap control and the stress balance problem of pintle, the cylinder body of hydraulic pump/motor is passed through two bearings on housing, again pintle is passed through two bearings in the center hole of cylinder body, and static pressure support oil groove is offered in position corresponding with high-voltage oil cavity on pintle, being introduced by oilhole by high pressure oil supports in oil groove, can ensure that the hydraulic action between pintle and cylinder body is in a basic balance like this, effectively can ensure again the matching gap of Port Plate Pair, thus improve volumetric efficiency and the reliability of oil hydraulic pump.

Description

Be applicable to axle flow supporting structure and the axle flow hydraulic radial pump/motor of hydraulic radial pump/motor
Technical field
The utility model relates to a kind of axle flow supporting structure and has the hydraulic pump/motor of this kind of axle flow supporting structure, belongs to Fluid Transmission and Control (hydraulic transmission) field.
Background technique
Radial Ball piston pump has that axial dimension is little, compact structure, component are few, is easy to realize the advantages such as high rotating speed, is with a wide range of applications in the field such as industrial or agricultural and national defence.
Radial Ball piston pump adopts axle flow form usually, and the design of Port Plate Pair is one of its key technology.Port Plate Pair should ensure certain sealing, thus ensures the volumetric efficiency of pump, ensures do not have serious fretting wear between Port Plate Pair two component simultaneously again, in order to avoid cause Port Plate Pair to lose efficacy, causes whole oil hydraulic pump to damage.Pintle is normally arranged on housing and maintains static by traditional axle distributing construction, and adopt cantilever structure, cylinder body is supported on pintle, causes pintle to be subject to larger one-sided radial load.
The problems referred to above make the advantage of radial Ball piston pump not give full play of, and limit its development.Address this problem, to the technical merit improving China's Hydraulic Industry, significant.
Model utility content
In view of this, the utility model provides a kind of the axle flow supporting structure and the axle flow hydraulic radial pump/motor that are applicable to hydraulic radial pump/motor, bearing is adopted to be supported on housing by cylinder body, the supporting structure of static pressure and bearing fit is adopted to be supported on cylinder body to pintle, support firm, each parts stressing conditions is good.
The described axle flow supporting structure being applicable to hydraulic radial pump/motor, comprising: the cylinder body of pintle, four bearings, hydraulic radial pump/motor and housing; Described cylinder body passes through two bearings of its outer peripheral surface on housing, and described pintle passes through two bearings in cylinder body center hole; Circumferencial direction along described pintle is symmetrily processed with the oil pocket of two axis, and the oil circuit of described oil pocket and hydraulic pump/motor is through; The outer peripheral surface of described pintle have two to support oil groove to the static pressure of above arc along its axial distribution; Often pair of static pressure support oil groove is symmetrical along the circumferencial direction of pintle; It is through that the oil pocket being wherein positioned at pintle side supports oil groove respectively by the static pressure of oilhole and its offside; Adopt the pressing plate be connected with housing to limit moving axially of described pintle to rotate with circumference.
Described axle flow hydraulic radial pump/motor, comprising: housing, stator raceway, cylinder body, pintle, piston, variable piston, variable cylinder cap, cylindrical roller, input shaft, four bearings, variable manipulation valve, cover plate and pressing plates.
Its annexation is: described stator raceway is positioned at housing, and its upper and lower two ends are respectively supported on the cover plate that is connected with housing by one group of cylindrical roller; Described cylinder body passes through two bearings of its outer peripheral surface on housing, and its axis is coaxial with described stator raceway; Described pintle passes through two bearings in the center hole of cylinder body; Circumferencial direction along described pintle is symmetrily processed with the oil pocket of two axis, and the oil circuit of described oil pocket and hydraulic pump/motor is through; The outer peripheral surface of described pintle have two to support oil groove to the static pressure of above arc along its axial distribution; Often pair of static pressure support oil groove is symmetrical along the circumferencial direction of pintle; It is through that the oil pocket being wherein positioned at pintle side supports oil groove respectively by the static pressure of oilhole and its offside; Described pintle is connected with housing by the pressing plate of its end;
The circumferencial direction of described cylinder body is evenly distributed with two or more for installing the radial piston hole of piston; In hydraulic pump/motor working procedure, the inner arc raceway contact of described piston and stator raceway; Two groups of variable pistons and variable cylinder cap are arranged symmetrically in the both sides of stator track radial direction, are connected with described housing; Described variable manipulation valve is connected with housing, controls to handle pressure oil and enters piston cavity; Described input shaft is coaxially arranged on the end of pintle, and is attached thereto.
Beneficial effect:
Adopt the dual-support structure of static pressure and bearing between pintle and cylinder body, hydraulic pressure support and bearings advantage separately can be given full play to, solve gap control and the stress balance problem of pintle, be specially:
(1) cylinder body is passed through two bearings on housing, the radial hydraulic pressure that cylinder body can be made to be subject to is delivered on housing by bearing, supports firm.
(2) pintle passes through two bearings in the center hole of cylinder body, and position corresponding with high (low) pumping cavity on pintle is offered static pressure and is supported oil groove, high pressure oil is introduced in support slot by aperture, can ensure that the hydraulic action between pintle and cylinder body is in a basic balance like this, Port Plate Pair (between pintle and cylinder body) is made to have suitable matching gap by bearing again, prevent fluid from leaking in a large number, thus improve volumetric efficiency and the reliability of oil hydraulic pump.
(3) after adopting the supporting structure of this kind of form, again by supporting oil well width and height (low) pumping cavity and the appropriate design supporting hole diameter between oil groove, the very big radial forces that hydraulic pump/motor high-voltage oil cavity pressure oil produces between pintle and cylinder body can be realized and be substantially balanced; The sub-fraction influence of unbalance power produced due to the factor such as working conditions change or dynamic pressure effect is born by the bearing of two between pintle and cylinder body, and therefore the bearing load of bearing is less.
(4) because pintle and cylinder body are fitted together by bearing pack, the play of two bearings that cylinder body is supported on housing does not affect the matching gap of axle Port Plate Pair.
Accompanying drawing explanation
Fig. 1 is axle flow supporting structure schematic diagram;
Fig. 2 is the radial cross-section of the radial Ball piston pump of axle flow;
Fig. 3 is the axial sectional view of the radial Ball piston pump of axle flow;
Fig. 4 is the left view of the radial Ball piston pump of axle flow;
Fig. 5 is the axial sectional view of pintle;
Fig. 6 is the A-A sectional view of Fig. 5.
Wherein: 1-housing, 2-stator raceway, 3-cylinder body, 4-pintle, 5-piston, 6-variable piston, 7-variable cylinder cap, 8-cylindrical roller, 9-input shaft, 10-bearing A, 11-bearing B, 12-variable manipulation valve, 13-bearing C, 14-bearings D, 15-end cap, 16-cover plate, 17-pressing plate, 18-support oil groove, 19-oil pocket
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
The present embodiment provides a kind of and adopts the radial Ball piston pump of the axle flow of static pressure and bearing dual-support structure form to pintle, and the structural type of this oil hydraulic pump as shown in Figures 2 and 3.Comprise: housing 1, stator raceway 2, cylinder body 3, pintle 4, piston 5, variable piston 6, variable cylinder cap 7, cylindrical roller 8, input shaft 9, bearing A10, bearing B11, variable manipulation valve 12, bearing C13, bearings D 14, end cap 15, cover plate 16, pressing plate 17 and seal connector etc., piston 5 described in the present embodiment is ball piston.
Its annexation is: described stator raceway 2 is positioned within the case 1, is supported on two cover plates 16 be connected with housing 1 by upper and lower two groups of cylindrical rollers 8.Described cylinder body 3 is supported on housing 1 by the bearing A10 at its outer peripheral surface two ends and bearing B11, and makes its axis keep coaxial with stator raceway 2.Pintle 4 is supported in the center hole of cylinder body 3 by bearing C13 and bearings D 14, keeps certain flow gap between the outer peripheral surface of pintle 4 and the center of cylinder body 3 control.Owing to not being fixedly connected with between pintle 4 with other parts, thus ensure that flow gap is not subject to the impact of bearing A10 and bearing B11 changed play.
As shown in Figure 4 and Figure 5, in the present embodiment, pintle 4 is hollow shaft to the structure of described pintle.Be provided with the oil pocket 19 of two axis in the inside of described pintle 4, lay respectively at the both sides up and down in its horizontal symmetrical face; Described oil pocket 19 is through with the oil circuit of hydraulic pump/motor.On the outer peripheral surface of described pintle, the position corresponding to each oil pocket 19 is processed with two arc grooves respectively, supports oil groove 18 as static pressure; It is through that the oil pocket 19 being positioned at side, pintle 4 horizontal symmetrical face supports oil groove 18 respectively by the static pressure of oilhole and its offside.In the course of the work, the support force that the pressure oil that the hydraulic coupling to pintle 4 that the pressure oil in the oil pocket of side produces can support in oil groove with other side produces balances each other.
One side end face of described pintle 4 is evenly distributed with four restraining grooves along its circumferencial direction, four pressing plates 17 are arranged on housing 1 by screw, projection on described pressing plate 17 coordinates with pintle 4 upper limit position groove, thus restriction pintle 4 is in the motion of axis and circumferencial direction.
Nine piston 5 distributing installations along the circumferential direction in equally distributed nine radial piston holes, are processed into ball-and-socket shape, can reduce dead volume like this, improve the volumetric efficiency of hydraulic pump/motor on cylinder body 3 bottom piston hole; Piston 5 can adopt solid sphere, also can adopt hollow ball.In working procedure, the inner arc raceway contact of described piston 5 and stator raceway 2.Two groups of variable pistons 6 and variable cylinder cap 7 are arranged symmetrically in the both sides of stator track 2 respectively, are connected with housing 1 by bolt.Described variable manipulation valve 12 is arranged on housing, control to handle pressure oil by variable manipulation valve 12 and enter piston cavity, promote stator raceway 2 to offset in the lateral direction, make to produce throw of eccentric between cylinder body 3 and stator raceway 2, thus regulate the turnover direction of pump delivery and fluid.Described input shaft 9 is coaxially arranged on the end of pintle 4, and input shaft 9 is connected with cylinder body 3 by bolt, can input power.The outer peripheral surface of input shaft 9 is set with end cap 15, and end cap 15 is arranged on housing 1, plays location and seal action.
The working principle of the radial Ball piston pump of this axle flow is: power inputs from input shaft 9, cylinder body 3 is driven to rotate, stator raceway 2 offsets under the effect of variable manipulation valve 12 and variable piston 6, make to produce throw of eccentric between cylinder body 3 and stator raceway 2, piston 5 to-and-fro motion in the radial hole of cylinder body 3 under the effect of centrifugal force and stator raceway 2, realizes oil suction and force feed.
The assembly process of the axle flow radial-piston motor oil hydraulic pump of this kind of structural type is: first one group of cylindrical roller 8 is contained in the roller groove of a cover plate 16 by (1), is then assembled together with the lower end of bolt by this cover plate and housing 1; (2) stator raceway 2 is put into housing, make the roller groove bottom it corresponding with the cylindrical roller in already installed cover plate 16; (3) other one group of cylindrical roller 8 is arranged in the roller groove on stator raceway 2 top, and with bolt, another cover plate 16 is installed on housing; (4) with bolt, end cap 15 is arranged on the relevant position of housing 1 end together with oil sealing; (5) bearing A10, bearing B11 are assemblied in the two ends of cylinder body 3 outer peripheral surface, and bearings D 14 are arranged on the relevant position of cylinder body 3 endoporus; (6) with bolt, input shaft 9 is coaxially arranged on the end of cylinder body 3, described input shaft 9 plays the effect of axially locating simultaneously to bearing A10; (7) nine pistons 5 are respectively charged in the piston hole on cylinder body 3; (8) assembly assembled by cylinder body 3, bearing A10, bearing B11, bearings D 14, input shaft 9, piston 5 is loaded in housing 1 from the hole that housing 1 lateral diameters is larger, until bearing A10 contacts with the end cap assembled and locates, input shaft 9 spindle nose reaches outside housing 1 through the oil sealing hole on end cap 15; (9) bearing C13 is installed to the relevant position of pintle 4, round section joint ring is loaded in the round section joint ring groove of pintle, form pintle assembly thus; (10) the pintle assembly assembled coaxially is loaded the center hole of cylinder body 3, and bearings D 14 endoporus is coordinated with pintle 4, between pintle 4 and bearing B11 outer ring, increase appropriate spacer, regulate the oil-distribution port on pintle 4 corresponding with the oil-distribution port in cylinder body 3 endoporus; (11) with bolt, pressing plate 17 is arranged on housing, the projection on pressing plate 17 is coordinated with the restraining groove on pintle 4, the rotation in a circumferential direction of restriction pintle; (12) variable piston 6 is arranged in the variable hole of housing 1 both sides, with bolt, variable cylinder cap 7 is arranged on housing; (13) with bolt, variable manipulation valve 12 is arranged on the mounting point of housing 1; (14) the hydraulic fluid port pipeline on the oil inlet and outlet on variable manipulation valve 12 and housing both sides variable cylinder cap 7 is connected.
The supporting structure of above-mentioned axle pintle can be applied to Hele-Shaw motor and radial plunger type pump/motor equally.
In sum, these are only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (6)

1. be applicable to the axle flow supporting structure of hydraulic radial pump/motor, it is characterized in that, comprising: the cylinder body (3) of pintle (4), four bearings, hydraulic radial pump/motor and housing (1); Described cylinder body (3) by two bearings of its outer peripheral surface on housing (1), described pintle (4) by two bearings in cylinder body (3) center hole; Circumferencial direction along described pintle (4) is symmetrily processed with the oil pocket (19) of two axis, and described oil pocket (19) is through with the oil circuit of hydraulic pump/motor; The outer peripheral surface of described pintle (4) have two to support oil groove (18) to the static pressure of above arc along its axial distribution; Often pair of static pressure support oil groove (18) is symmetrical along the circumferencial direction of pintle (4); It is through that the oil pocket (19) being wherein positioned at pintle (4) side supports oil groove (18) respectively by the static pressure of oilhole and its offside; Adopt the pressing plate (17) be connected with housing (1) to limit moving axially of described pintle (4) to rotate with circumference.
2. axle flow hydraulic radial pump/motor, it is characterized in that, comprising: housing (1), stator raceway (2), cylinder body (3), pintle (4), piston (5), variable piston (6), variable cylinder cap (7), cylindrical roller (8), input shaft (9), four bearings, variable manipulation valve (12), cover plate (16) and pressing plates (17);
Its annexation is: described stator raceway (2) is positioned at housing (1), and its upper and lower two ends are respectively supported on the cover plate (16) that is connected with housing (1) by one group of cylindrical roller (8); Described cylinder body (3) is by two bearings of its outer peripheral surface on housing (1), and its axis is coaxial with described stator raceway (2); Described pintle (4) by two bearings in the center hole of cylinder body (3); Circumferencial direction along described pintle (4) is symmetrily processed with the oil pocket (19) of two axis, and described oil pocket (19) is through with the oil circuit of hydraulic pump/motor; The outer peripheral surface of described pintle (4) have two to support oil groove (18) to the static pressure of above arc along its axial distribution; Often pair of static pressure support oil groove (18) is symmetrical along the circumferencial direction of pintle (4); It is through that the oil pocket (19) being wherein positioned at pintle (4) side supports oil groove (18) respectively by the static pressure of oilhole and its offside; Described pintle (4) is connected with housing (1) by the pressing plate (17) of its end;
The circumferencial direction of described cylinder body (3) is evenly distributed with two or more for installing the radial piston hole of piston (5); In hydraulic pump/motor working procedure, the inner arc raceway contact of described piston (5) and stator raceway (2); Two groups of variable pistons (6) and variable cylinder cap (7) are arranged symmetrically in the radial both sides of stator track (2), are connected with described housing (1); Described variable manipulation valve (12) is connected with housing (1), controls to handle pressure oil and enters piston cavity; Described input shaft (9) is coaxially arranged on the end of pintle (4), and is attached thereto.
3. axle flow hydraulic radial pump/motor as claimed in claim 2, it is characterized in that, described pintle (4) is hollow shaft.
4. axle flow hydraulic radial pump/motor as claimed in claim 2, is characterized in that, described hydraulic pump/motor is the radial Ball piston pump/motor of axle flow.
5. axle flow hydraulic radial pump/motor as claimed in claim 4, is characterized in that, the bottom in the upper radial piston hole of described cylinder body (3) is ball-and-socket shape.
6. axle flow hydraulic radial pump/motor as claimed in claim 2, it is characterized in that, described hydraulic pump/motor is axle flow radial plunger type hydraulic pump/motor.
CN201520443371.7U 2015-06-25 2015-06-25 Be applicable to axle flow supporting structure and the axle flow hydraulic radial pump/motor of hydraulic radial pump/motor Active CN204729284U (en)

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CN201520443371.7U CN204729284U (en) 2015-06-25 2015-06-25 Be applicable to axle flow supporting structure and the axle flow hydraulic radial pump/motor of hydraulic radial pump/motor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948444A (en) * 2015-06-25 2015-09-30 北京理工大学 Shaft flow distribution supporting structure suitable for radial hydraulic pump/motor and shaft flow distribution radial hydraulic pump/motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948444A (en) * 2015-06-25 2015-09-30 北京理工大学 Shaft flow distribution supporting structure suitable for radial hydraulic pump/motor and shaft flow distribution radial hydraulic pump/motor

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