阅读说明：本技术 一种新型载荷平衡式径向柱塞泵 (A kind of novel loading Balanced Radial Piston Pump ) 是由 李争齐 陈天宝 李畅 杨红兵 耿小龙 鲍建兴 方玲珑 于 2019-08-13 设计创作，主要内容包括：本发明公开了一种新型载荷平衡式径向柱塞泵,包括机架、缸体、驱动轴,所述驱动轴的中部连接有椭圆盘转子,椭圆盘转子的外圆周上沿周向设置有椭圆形的凹槽结构；所述凹槽结构连接有柱塞连接件,所述柱塞连接件分别连接有柱塞组件,所述柱塞组件贯穿缸体并在其末端连接有配流阀组件；所述柱塞连接件的下端轴两侧对称安装有第一滚子轴承,所述第一滚子轴承与所述凹槽结构相配合；本柱塞泵通过所述驱动轴带动所述椭圆盘转子同步转动,柱塞行程为椭圆的半长轴与半短轴之差,从而实现恒流量；柱塞组件对称设置的结构,能够保证本柱塞泵工作时驱动轴受力对称,消除径向不平衡力；避免造成较大的径向载荷,降低振动与噪音,减小了磨损,提高寿命。(The invention discloses a kind of novel loading Balanced Radial Piston Pump, including rack, cylinder body, drive shaft, oval disc rotor, the circumferentially arranged groove structure for having ellipse on the excircle of oval disc rotor are connected in the middle part of the drive shaft；The groove structure is connected with plunger connector, and the plunger connector is connected separately with plunger assembly, and the plunger assembly is through cylinder body and is connected with flow valve module at its end；The lower end axis two sides of the plunger connector are symmetrically installed with the first roller bearing, and first roller bearing is matched with the groove structure；This plunger pump drives the oval disc rotor to rotate synchronously by the drive shaft, and ram travel is the difference of elliptical semi-major axis and semi-minor axis, to realize constant flow；The symmetrically arranged structure of plunger assembly can guarantee that drive shaft stress is symmetrical when this plunger pump work, eliminate radial imbalance force；Biggish radial load is avoided, noise and vibration is reduced, reduces abrasion, improves the service life.)

1. a kind of novel loading Balanced Radial Piston Pump, including rack, the rack top is equipped with cylinder body, sets in the cylinder body There is drive shaft, which is characterized in that oval disc rotor is connected in the middle part of the drive shaft, on the excircle of the ellipse disc rotor The circumferentially arranged groove structure for having ellipse；The groove structure is connected separately with four groups of plunger connectors, and the plunger connects Fitting is connected separately with plunger assembly, and the plunger assembly is through the cylinder body and is connected with flow valve module at its end；

The flow valve module includes valve gland and valve seat, is equipped with suction passage and oil drain passage in the valve gland；The valve The flow valve module is connected on the cylinder body by gland by bolt；The valve seat is arranged on the plunger assembly, institute It states and is equipped with fuel feed hole in the middle part of valve seat, the fuel feed hole is equipped with stem valve, and one end of the stem valve is protruded into the suction passage simultaneously Control the opening and closing of the suction passage, far from being additionally provided with oil outlet at the stem valve on the valve seat, the oil outlet with it is described Oil drain passage connection；

The plunger assembly includes the plunger case connecting with the cylinder body, and the plunger of hollow structure, institute are equipped in the plunger case Upper end is stated to be equipped with plunger lower end cap, lower end through the cylinder body equipped with plunger upper plug head, middle part and protrude into the cylinder body Portion is successively arranged guide sleeve, plunger bushing and sealing ring between the plunger and the cylinder body of lower part；The plunger protrudes into described The intracorporal end of cylinder is spirally connected the plunger connector；

The lower end axis two sides of the plunger connector are symmetrically installed with the first roller bearing, first roller bearing with it is described recessed Slot structure matches；

The valve seat is arranged on the plunger case, and the fuel feed hole and the oil outlet correspond to the plunger setting.

2. a kind of novel loading Balanced Radial Piston Pump according to claim 1, which is characterized in that the flow valve group Part further includes spring base, plate valve, plate valve spring；The spring base is arranged between the valve seat and the valve gland and is contacting The first oil groove and the second oil groove are respectively equipped on face, first oil groove is connected to the oil drain passage, second oil groove with The oil outlet connection；It is connected between first oil groove and second oil groove by spring base oil circuit hole；Second oil Slot corresponds to and is equipped with the plate valve at the oil outlet, and plate valve spring, the plate valve and the plate valve bullet are arranged on the plate valve Spring protrudes into spring base oil circuit hole and connects the spring base；The plate valve controls the opening and closing of the oil drain passage；The bullet The space for accommodating the stem valve is equipped in the middle part of spring abutment.

3. a kind of novel loading Balanced Radial Piston Pump according to claim 2, which is characterized in that the spring base Sealing ring is equipped on upper and lower end face and outer circumference surface.

4. a kind of novel loading Balanced Radial Piston Pump according to claim 1, which is characterized in that the stem valve is arranged In stem valve guide bracket；The stem valve guide bracket has integrally formed upper guide bracket and lower guide bracket, and the outer diameter of the upper guide bracket is less than institute The outer diameter of lower guide bracket is stated, collateral support is symmetrically equipped on the excircle of the lower guide bracket, the lower guide bracket is arranged in the valve seat On, the collateral support connects the valve gland；Stem valve spring is arranged on the upper guide bracket；The end of the stem valve is connected with out Slot nut is simultaneously fixed by split pin；The slotted nut pushes down the stem valve spring.

5. a kind of novel loading Balanced Radial Piston Pump according to claim 1 or 2 or 4, which is characterized in that the valve The both ends of gland are respectively equipped with non-interconnected the first inner hole and the second inner hole；The valve gland is equipped with close to the one side of the valve seat Third inner hole；The third inner hole is externally provided with third oil groove, and the third oil groove close to second inner hole side inwardly prolongs It stretches and is connected to second inner hole；Second inner hole and the third oil groove form the oil drain passage；In described first Hole and the third inner hole form the suction passage；One end of the stem valve is set in the third inner hole, the third The inner peripheral surface of inner hole is equipped with assembly step.

6. a kind of novel loading Balanced Radial Piston Pump according to claim 1, which is characterized in that the cylinder body and institute Stating plunger assembly junction is shoulder hole structure；The plunger bushing and the plunger case are equipped with to match with the shoulder hole structure The flanging of conjunction；Annular pressing plate is additionally provided on the plunger bushing, the annular pressing plate is set on the plunger and pushes down institute along axial direction State plunger bushing and guide sleeve；Support ring is also arranged between the plunger and the plunger case.

7. a kind of novel loading Balanced Radial Piston Pump according to claim 6, which is characterized in that the annular pressing plate Filler is filled in gap between the guide sleeve；Gap between the support ring and the plunger and the plunger case In be also filled with filler, and be equipped with filler pressure cap；The filler is damping particle.

8. a kind of novel loading Balanced Radial Piston Pump according to claim 1, which is characterized in that the oval plate turns Son is separate structure, including oval plate ontology and oval plate side cover, and the oval plate ontology and the oval plate side cover are spirally connected solid It is fixed；The first roller bearing formal dress is in the groove structure.

9. a kind of novel loading Balanced Radial Piston Pump according to claim 1, which is characterized in that the drive shaft two End is fastened on the cylinder body by the second roller bearing and bearing gland respectively；The drive shaft stretches out the cylinder body One end is equipped with keyway, is connected to motor by shaft coupling, and the other end of the cylinder body is equipped with end-plate；The drive shaft with it is described Oval disc rotor is connected by spline.

10. a kind of novel loading Balanced Radial Piston Pump according to claim 1, which is characterized in that the valve gland Both ends are bolted with oil suction tee tube and oil extraction tee tube respectively；The oil suction tee tube corresponds to the suction passage setting, described Oil extraction tee tube corresponds to the oil drain passage setting；The oil suction tee tube and the oil extraction tee tube pass through pipe respectively and support spiral shell It connects on the cylinder body.

Technical field

The present invention relates to plunger pump technique fields, and in particular to arrives a kind of novel loading Balanced Radial Piston Pump.

Background technique

Existing radial plunger pump is mainly that crank link mechanism and cam mechanism is used to drive the positive displacement of piston reciprocation Pump, structure is complicated for pintle, and needs to be equipped with independent return mechanism；Though emerging radial equilibrium formula plunger pump in recent years It can solve radial force imbalance problem, but plunger is rotated with rotor.

Existing radial plunger pump is primarily present following problem:

(1) radial force of existing radial plunger pump effect on the driving shaft is uneven, causes biggish radial load, makes Radial plunger pump generates very big noise and vibration at work, is prone to wear out, and influences its service life, limits revolving speed and pressure It improves；

(2) structure is complicated for pintle, and needs to be equipped with plunger return structures, causes to pump complicated integral structure；

(3) plunger is rotated with rotor, there are problems that plunger dynamic sealing.

Summary of the invention

In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of novel loading balanced type radial plungers Pump.

To achieve the above object, the technical solution adopted by the present invention is that:

A kind of novel loading Balanced Radial Piston Pump, including rack, are equipped with cylinder body above the rack, in the cylinder body Equipped with drive shaft, it is connected with oval disc rotor in the middle part of the drive shaft, is uniformly distributed on the excircle of the ellipse disc rotor There is the circumferentially arranged groove structure for having ellipse；The groove structure is connected separately with four groups of plunger connectors, the plunger Connector is connected separately with plunger assembly, and the plunger assembly is through the cylinder body and is connected with flow valve module at its end；

The flow valve module includes valve gland and valve seat, is equipped with suction passage and oil drain passage in the valve gland；Institute It states valve gland and the flow valve module is connected on the cylinder body by bolt；The valve seat is arranged in the plunger assembly On, fuel feed hole is equipped in the middle part of the valve seat, the fuel feed hole is equipped with stem valve, and the suction passage is protruded into one end of the stem valve In and control the opening and closing of the suction passage, far from being additionally provided with oil outlet at the stem valve on the valve seat, the oil outlet with The oil drain passage connection；

The plunger assembly includes the plunger case connecting with the cylinder body, and the column of hollow structure is equipped in the plunger case Plug, the upper end is equipped with plunger upper plug head, middle part is equipped with plunger lower end cap, the cylinder through the cylinder body and is protruded into lower end Internal portion is successively arranged guide sleeve, plunger bushing and sealing ring between the plunger and the cylinder body of lower part；The plunger protrudes into The intracorporal end of cylinder is spirally connected the plunger connector；

The lower end axis two sides of the plunger connector are symmetrically installed with the first roller bearing, first roller bearing and institute Groove structure is stated to match；

The valve seat is arranged on the plunger case, and the fuel feed hole and the oil outlet correspond to the plunger setting.

This plunger pump drives the oval disc rotor to rotate synchronously by the drive shaft, and the drive shaft fortune circles, The plunger is driven to do linear reciprocating motion twice, the ram travel is the difference of elliptical semi-major axis and semi-minor axis, thus real Existing constant flow.Since the oval disc rotor and the plunger assembly structure are full symmetric, it can be ensured that this plunger pump work Drive shaft stress is symmetrical when making, and eliminates radial imbalance force；Biggish radial load is avoided, radial plunger pump is made to work When the noise and vibration that generates reduce, reduce abrasion, improve its service life, revolving speed and pressure also can be accordingly improved.

The ellipse disc rotor rotation can be realized the plunger and move reciprocatingly, and the plunger with rotor without revolving The problem of turning, avoiding plunger rotary dynamic seal；The lower end of plunger connector is connected described ellipse by first roller bearing Sliding friction is conjugated rolling friction, improves plunger by the groove on disc rotor instead of Slipper coupling in the prior art Force-bearing situation and sealing condition.

The ellipse disc rotor is equipped with oval-shaped groove structure, certainly can also be optimized to oval-shaped groove structure curve The curve for meeting demanding kinetics is matched with the first roller bearing on plunger connector, and oval plate rotor inner hole offers Spline plays the role of being fixedly connected.

Flow can be realized without being equipped with individual return mechanism, with plunger assembly cooperation in the flow valve module Effect.

Further, the flow valve module further includes spring base, plate valve, plate valve spring；The spring base is arranged in institute State between valve seat and the valve gland and be respectively equipped on the contact surface the first oil groove and the second oil groove, first oil groove and institute Oil drain passage connection is stated, second oil groove is connected to the oil outlet；Lead between first oil groove and second oil groove Cross the connection of spring base oil circuit hole；Second oil groove corresponds to and is equipped with the plate valve at the oil outlet, is arranged on the plate valve Plate valve spring, the plate valve protrude into spring base oil circuit hole with the plate valve spring and connect the spring base；The plate valve Control the opening and closing of the oil drain passage；The space for accommodating the stem valve is equipped in the middle part of the spring base.

By the reciprocating motion of plate valve and plate valve spring, the oil outlet and the spring base oil circuit can be opened and closed Hole.

Further, upper and lower end face and outer circle in order to guarantee that the leakproofness of oil liquid avoids its leakage, in the spring base Sealing ring is equipped on circumferential surface.

Further, the stem valve is set in stem valve guide bracket, the stem valve guide bracket have integrally formed upper guide bracket and Lower guide bracket, the outer diameter of the upper guide bracket are less than the outer diameter of the lower guide bracket；Side is symmetrically equipped on the excircle of the lower guide bracket Support, the lower guide bracket are arranged on the valve seat, and the collateral support connects the valve gland；Bar is arranged on the upper guide bracket Valve spring；The end of the stem valve is connected with slotted nut and is fixed by split pin；The slotted nut pushes down the stem valve Spring.

By the simple stem valve of structure and plate valve, depending post valve spring and plate valve spring, in plunger case reciprocatory movement In, in conjunction with the variation of in-cylinder pressure, i.e., the opening and closing of controllable suction passage and oil drain passage；The pintle knot for avoiding setting complicated Structure keeps the flat valve modular construction simple and compact.

The reciprocating motion of stem valve guide bracket being provided with conducive to stem valve, while convenient for fixed and assembly.

Further, the both ends of the valve gland are respectively equipped with non-interconnected the first inner hole and the second inner hole；The valve pressure The one side covered close to the valve seat is equipped with third inner hole；The third inner hole is externally provided with third oil groove, close to second inner hole The third oil groove of side extends internally and is connected to second inner hole；Second inner hole is formed with the third oil groove The oil drain passage；First inner hole and the third inner hole form the suction passage；One end of the stem valve is set in In the third inner hole, the inner peripheral surface of the third inner hole is equipped with assembly step.

Using the valve gland of this structure, by suction passage and oil drain passage it is integrally disposed on one component, reduce The setting of component optimizes the structure of the flow valve module；The shape of the third oil groove is arc-shaped, second oil groove And first the shape of oil groove be also set as arc accordingly.

The setting of step is assembled convenient for the assembly with valve rod guide bracket and spring base.

Further, the cylinder body and the plunger assembly junction are shoulder hole structure；The plunger bushing and the column Plug cylinder is equipped with the flanging matched with the shoulder hole structure；Annular pressing plate, the annular pressure are additionally provided on the plunger bushing Sleeve-board is located on the plunger and pushes down the plunger bushing and guide sleeve along axial direction；It is also arranged between the plunger and the plunger case There is support ring.

Guide sleeve can reduce the frictional force of piston reciprocation movement, and play the role of guiding；Plunger bushing plays and cylinder body Circumferential mating reaction, the fixed plunger, annular pressing plate pressure in the case where axially applying avoids plunger bushing and guide sleeve along axial It is mobile, influence the activity and whole performance of plunger.

Further, filler is filled in the gap between the annular pressing plate and the guide sleeve；The support ring with It is also filled with filler in gap between the plunger and the plunger case, and is equipped with filler pressure cap；The filler is damping Grain.The damping particle is carbon fibre particle, can play the role of bumper and absorbing shock to the plunger assembly.

Further, the oval disc rotor is separate structure, including oval plate ontology and oval plate side cover, the ellipse Disk ontology and the oval plate side cover are spirally connected fixation；The first roller bearing formal dress is in the groove.

Using the oval disc rotor of separate structure convenient for assembly, plunger assembly described in four groups and the plunger connector are with ellipse Round central point center symmetric setting.

Further, the drive shaft both ends pass through the second roller bearing respectively and bearing gland is fastened on the cylinder On body；The drive shaft stretch out the cylinder body one end be equipped with keyway, be connected to motor by shaft coupling, the cylinder body it is another End is equipped with end-plate；The drive shaft is connect with the oval disc rotor by spline.

Further, valve gland both ends are bolted with oil suction tee tube and oil extraction tee tube respectively；The oil suction threeway Pipe corresponds to the suction passage setting, and the oil extraction tee tube corresponds to the oil drain passage setting；The oil suction tee tube and institute Oil extraction tee tube is stated to be screwed on the cylinder body by pipe support respectively.

The course of work of the utility model load balanced radial plunger pump are as follows: the drive shaft drives the oval disc rotor fortune It circles, the plunger is driven to do linear reciprocating motion, so that the plunger case volume back and forth changes.The stem valve controls oil suction The opening and closing in channel, the opening and closing of the plate valve control oil drain passage.When the plunger is in oil suction stroke, the plunger case imbibition Volume constantly increases, and reduces the plunger in-cylinder pressure constantly, when the plunger in-cylinder pressure is inhaled lower than the stem valve upper end When oily channel pressure, the stem valve is opened downwards, and oil liquid enters the plunger case, completes oil inlet movement；Until the plunger case When interior pressure is greater than the stem valve upper end suction passage pressure, the stem valve is forced to be closed upwards, oil-absorbing process terminates；When described When plunger is in oil extraction stroke, the plunger case volume constantly reduces, and increases the plunger in-cylinder pressure constantly, when the column When filling in in-cylinder pressure higher than the plate valve upper end oil drain passage pressure, the plate valve is opened up, and liquid is arranged from the plunger case Out, when the plunger in-cylinder pressure is less than the plate valve upper end oil drain passage pressure, plate valve is closed downwards, oil extraction process knot Beam.The drive shaft drives the oval disc rotor to operate one week, and the plunger is driven to do linear reciprocating motion twice, the column The difference that stroke is elliptical semi-major axis and semi-minor axis is filled in, and then realizes constant flow.

Compared with prior art, the beneficial effects of the present invention are: 1, this plunger pump is described ellipse by drive shaft drive Disc rotor rotates synchronously, and the drive shaft fortune circles, and the plunger is driven to do linear reciprocating motion twice, the plunger row Journey is the difference of elliptical semi-major axis and semi-minor axis, to realize constant flow；2, due to the oval disc rotor and the plunger group Part structure is full symmetric, it can be ensured that drive shaft stress is symmetrical when this plunger pump work, eliminates radial imbalance force；It avoids Biggish radial load is caused, the noise and vibration for generating radial plunger pump at work reduces, and reduces abrasion, improves Its service life, revolving speed and pressure also can be accordingly improved；3, the oval disc rotor rotation can be realized the plunger and do back and forth Movement, the plunger is without the problem of rotating with rotor, avoiding plunger rotary dynamic seal；4, the plunger connector Lower end connects the groove on the oval disc rotor by first roller bearing, instead of Slipper coupling in the prior art, Sliding friction is conjugated into rolling friction, improves the force-bearing situation and sealing condition of plunger；5, this plunger pump avoids setting knot The pintle of structure complexity, while without being equipped with return mechanism；So that this plunger pump overall structure is simple and compact, can be widely applied Field relevant to hydraulic pump.

Detailed description of the invention

Fig. 1 is a kind of schematic view of the front view of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 2 is a kind of overlooking structure diagram of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 3 is a kind of Section A-A structural schematic diagram of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 4 is a kind of structural schematic diagram of the flow valve module of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 5 is a kind of structural schematic diagram of the plunger assembly of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 6 is a kind of structural schematic diagram of the valve gland of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 7 is a kind of structural schematic diagram of the stem valve guide bracket of novel loading Balanced Radial Piston Pump of the present invention；

Fig. 8 is a kind of structural schematic diagram of the oval disc rotor of novel loading Balanced Radial Piston Pump of the present invention；

In figure: 1, rack；2, drive shaft；3, end-plate；4, right axle pressure cap；5, the second roller bearing；6, cylinder body；7, ellipse Disc rotor；701, groove structure；702, oval plate ontology；703, oval plate side cover；8, plunger connector；9, pipe supports；10, Oil suction tee tube；11, oil suction connecting tube；12, oil suction connecting tube connects bolt；13, plunger assembly；1301, plunger；1302, column Plug sleeve；1303, guide sleeve；1304, annular pressing plate；1305, plunger bushing pressure cap；1306, plunger lower end cap；1307, washer； 1308, plunger upper plug head；1309, plunger case；1310, support ring；1311, filler pressure cap；1312, plunger bushing cylinder body connects spiral shell Bolt；14, flow valve module；1401, valve seat pad；1402, valve seat；1403, plate valve；1404, plate valve spring；1405, spring base； 1406, slotted nut；1407, split pin；1408, stem valve；1409, stem valve spring；1410, stem valve guide bracket；1411, the first oil Slot；1412, spring base oil circuit hole；1413, the second oil groove；1414, oil outlet；15, valve gland；1501, the first inner hole；1502, Second inner hole；1503, third inner hole；1504, third oil groove；16, valve gland cylinder body connects bolt；17, oil extraction connecting tube；18, Oil extraction tee tube；19, the first roller bearing；20, left axle pressure cap；21, sealing ring；22, filler；23, suction passage；24, it arranges Oily channel；25, upper guide bracket；26, lower guide bracket；27, collateral support.

Specific embodiment

Below in conjunction with the attached drawing in the present invention, technical solution of the present invention is clearly and completely described, it is clear that Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention Example, those of ordinary skill in the art's all other embodiment obtained under the conditions of not making creative work belong to The scope of protection of the invention.

In the description of the present invention, it should be noted that term " middle part ", "upper", "lower", "left", "right", "inner", The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this hair Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation Construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " etc. are only used for Purpose is described, relative importance is not understood to indicate or imply.