CN203835845U - Low-speed large-torque plunger hydraulic motor variable mechanism - Google Patents

Low-speed large-torque plunger hydraulic motor variable mechanism Download PDF

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Publication number
CN203835845U
CN203835845U CN201420241370.XU CN201420241370U CN203835845U CN 203835845 U CN203835845 U CN 203835845U CN 201420241370 U CN201420241370 U CN 201420241370U CN 203835845 U CN203835845 U CN 203835845U
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CN
China
Prior art keywords
variable valve
plunger
bonnet
variable
hydraulic motor
Prior art date
Application number
CN201420241370.XU
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Chinese (zh)
Inventor
徐玮
Original Assignee
宁波市恒通液压科技有限公司
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Publication date
Application filed by 宁波市恒通液压科技有限公司 filed Critical 宁波市恒通液压科技有限公司
Priority to CN201420241370.XU priority Critical patent/CN203835845U/en
Application granted granted Critical
Publication of CN203835845U publication Critical patent/CN203835845U/en

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Abstract

The utility model relates to a low-speed large-torque plunger hydraulic motor variable mechanism which comprises a cavity formed by a cover plate, a back cover, a stator and a front cover. A flow-distribution shaft, a rotor and a transmission shaft with a rolling bearing are installed inside the cavity, a roller, a sliding bearing, a plunger and a plunger baffle are connected into a plunger hole in the rotor, a variable valve hole is formed inside the back cover, an annular oil groove is formed in the variable valve hole to be communicated with a linear oil channel, and a variable valve element is arranged in the variable valve hole. Changes of the position of the variable valve element will influence flow distribution of hydraulic oil in the flow-distribution shaft, varying of a hydraulic motor is achieved, the requirements of a drill machine under different working conditions are accordingly met, and the using rate and the production efficiency of the motor are improved.

Description

A kind of stroking mechanism of low-speed big plunger piston hydraulic motor

Technical field

The utility model relates to a kind of hydraulic control, refers more particularly to a kind of stroking mechanism of low-speed big plunger piston hydraulic motor.

Background technique

In rotating driving device, as in the industry of colliery for boring the rig of vent hole.When the rig work initial stage, due to drill bit, to go deep into coal seam very shallow, and for raising the efficiency, now the working state for the oil hydraulic motor of drive unit is high rotating speed, little moment of torsion.And along with the going deep into of drill bit, the frictional force in drill bit and coal seam strengthens gradually, at this moment the working state of oil hydraulic motor is the slow-speed of revolution, high pulling torque.

At traditional drive unit, often adopt two motor driving drill bits that discharge capacity is the same, in the situation that hydraulic system total discharge is constant, when two oil hydraulic motors are worked together, drill bit is low-speed big state.When an oil hydraulic motor job, drill bit is the little torque condition of high speed.Because two motors are worked together, the mechanical efficiency that accumulative total produces will reduce, increase cost and be unfavorable for energy-conservationly, and the volume of machine increase, affects under mine own with regard to narrow working zone.

The drive unit also having adopts manual adjustment system flow, although this device can be controlled hydraulic motor rotary speed, cannot change the intrinsic discharge capacity of motor, therefore also cannot change the moment of torsion of motor.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of stroking mechanism of low-speed big plunger piston hydraulic motor is provided, and the pressure oil providing by outside, can change the discharge capacity of oil hydraulic motor automatically, thereby changes rotating speed and the moment of torsion of motor.

The technical scheme in the invention for solving the above technical problem is: a kind of stroking mechanism of low-speed big plunger piston hydraulic motor, comprise the cavity that cover plate, bonnet, stator, protecgulum form, described inside cavity installs pintle, rotor, with the transmission shaft of rolling bearing, in epitrochanterian plunger hole, be connected with roller, sliding bearing, plunger and plunger baffle plate, there is a variable valve opening described bonnet inside, on variable valve opening, there is annular oil groove to be connected with linear oil duct, in variable valve opening, have variable spool.

For optimizing technique scheme:

Bolt is fixed on cover plate on bonnet, and pintle and variable spool are housed in bonnet inside; By bolt bonnet, stator, with protecgulum, be fixed together, protecgulum, a pair of rolling bearing is housed, transmission shaft is worn the bearing that rolled, and pad is adjusted the play of bearing, and circlip is stuck in the groove of transmission shaft, prevent transmission shaft play, internal rotor is by spline and propeller shaft couplings, and left end is near rolling bearing, and right-hand member is near pintle, in rotor circumference, be distributed with plunger hole, plunger is equipped with in inside.

Described variable valve opening inside has annular oil groove to be communicated with linear runner, and there is filler opening C variable valve opening upper end.

In the middle of described variable spool, have annular groove, right side to have longitudinal aperture and each of horizontal aperture, in external diameter upper groove, circlip is housed, circlip left end is near baffle ring, and spring left end acts on the step of variable valve opening, and right-hand member acts on baffle ring.

Three linear runners of bonnet are communicated with the annular oil groove of pintle respectively, and filler opening A and the B of bonnet are communicated with annular oil groove respectively.

Compared with prior art, the invention has the advantages that:

In the situation that flow system flow is constant, regulate peripheral hardware pressure oil, the variable spool of controlling motor inside axially moves, and realizes the variable of motor, makes oil hydraulic motor can meet the job requirement of coal rig.In addition adopt stroking mechanism can make motor when high low speed conversion, only produce less impact force, play the effect of protection drill bit.With traditional two motor operations or manually control flow mode and compare, the present invention's operation is more simple and convenient, and improves the total efficiency of hydraulic system and reduce product cost.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model (sectional view);

Fig. 2 is structure partial enlarged diagram of the present utility model (before motor variable);

Fig. 3 is structure partial enlarged diagram of the present utility model (after motor variable);

Fig. 4 is the pintle structural representation (stereogram) in the utility model.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.

According to shown in Fig. 1-4 oneplant the stroking mechanism of low-speed big plunger piston hydraulic motor, comprise cover plate 13, bonnet 23, pintle 3, rotor 29, plunger 27, roller 26, plunger baffle plate 25, stator 28, protecgulum 33, transmission shaft 35, rolling bearing 34, rolling bearing 32, cover plate 13 is fixed on bonnet 23, pintle 3 is arranged in bonnet 23, bonnet 23, protecgulum 33 are fixed on stator 28, transmission shaft 35 supports by rolling bearing 34 and rolling bearing 32, and adjusts rolling bearing clearance and back-up ring 30 fixed conveyor axles by bearing shim 31.The annular oil groove 2 and 5 of pintle 2 is connected with filler opening B and the A of bonnet 23 bottoms respectively, the annular oil groove 2,9 of pintle 3 and the 5 linear oil ducts 10,11,12 by bonnet 19 tops are connected with the annular oil groove 22,21,20 of variable valve opening 24 respectively, and the annular oil groove 2,9 of pintle 3 and 5 is connected to the relevant flow oil duct of rotor 25 respectively by inner oil duct 1,6,8 own.

Variable spool 19 is arranged in variable valve opening 24, spring 18 and baffle ring 17 are enclosed within variable spool 19 right-hand members, circlip 15 is arranged in the groove of variable spool 19 right-hand members, under the power effect of spring 14, variable spool 19, baffle ring 17, circlip 15 is withstood on gland 16.Variable spool 19 right-hand members have vertical putting and horizontal two apertures, and effect is to make the pressure oil liquid that C mouth is come in can flow to fast speed change spool right side.

Gland 32 is bolted on bonnet 23.

Description below in conjunction with accompanying drawing 2 and 3 pairs of variable spool 19 opening procedures of accompanying drawing

Before motor variable, as accompanying drawing 2, high-voltage oil liquid enters filler opening A, pass through again annular oil groove 5 and the inner flow passage 6 of pintle 3, finally enter 36 li of the plunger holes of internal rotor, simultaneously high-voltage oil liquid passes through annular oil groove 5, linear runner 12, annular oil groove 20, annular oil groove 21, linear runner 11, annular oil groove 9, the inner flow passage 8 of pintle 3 successively, finally enters 7 li of the plunger holes of internal rotor.Enter high-voltage oil liquid in plunger hole and promote respectively the movement of plunger, the then rotation of rotor driven.After rotor, high-voltage oil liquid is converted into low pressure fluid, then through inner flow passage 1 and annular oil groove 2, from B mouth, discharges.

When motor filler opening, C has high-voltage oil liquid to enter, and by the vertical of right-hand member of variable spool 19, puts and horizontal aperture, and high-voltage oil liquid acts on the right side of speed change spool 19, forces speed change spool 19 to left movement, until baffle ring 17 is blocked by valve opening step.At this moment motor is state after variable, as accompanying drawing 3.Now because annular oil groove 20 and annular oil groove 21 are spaced, the high-voltage oil liquid that enters A mouth can only enter by annular oil groove 5 and inner flow passage 6 36 li of the plunger holes of internal rotor.After rotor, high-voltage oil liquid is converted into low pressure fluid, then through inner flow passage 1 and annular oil groove 2, from B mouth, discharges.

Before and after contrast motor variable: the number that variable advances into the plunger hole of high-voltage oil liquid is the twice after variable, the intrinsic discharge capacity that is motor is changed, after variable, be 1/2nd before variable, therefore moment of torsion is only also 1/2nd before variable, in the situation that system output stream amount is constant, after variable, speed rises to two times before variable.

State before motor variable is the slow-speed of revolution, high pulling torque.State after motor variable is high rotating speed, little moment of torsion.

The drive unit of the rig in the present embodiment adopts the low-speed big plunger piston hydraulic motor with stroking mechanism, can pass through the control fluid of external setting-up, the discharge capacity of governor motor, in the situation that hydraulic system total discharge is constant, automatically change speed and the moment of torsion of motor, thereby meet the various operating modes of rig.

Claims (5)

1. the stroking mechanism of a low-speed big plunger piston hydraulic motor, comprise the cavity that cover plate, bonnet, stator, protecgulum form, it is characterized in that: described inside cavity installs pintle, rotor, with the transmission shaft of rolling bearing, in epitrochanterian plunger hole, be connected with roller, sliding bearing, plunger and plunger baffle plate, there is a variable valve opening described bonnet inside, on variable valve opening, there is annular oil groove to be connected with linear oil duct, in variable valve opening, have variable spool.
2. the stroking mechanism of low-speed big plunger piston hydraulic motor according to claim 1, is characterized in that: bolt is fixed on cover plate on bonnet, and pintle and variable spool are housed in bonnet inside; By bolt bonnet, stator, with protecgulum, be fixed together, protecgulum, a pair of rolling bearing is housed, transmission shaft is worn the bearing that rolled, and pad is adjusted the play of bearing, and circlip is stuck in the groove of transmission shaft, prevent transmission shaft play, internal rotor is by spline and propeller shaft couplings, and left end is near rolling bearing, and right-hand member is near pintle, in rotor circumference, be distributed with plunger hole, plunger is equipped with in inside.
3. the stroking mechanism of low-speed big plunger piston hydraulic motor according to claim 2, is characterized in that: described variable valve opening inside has annular oil groove to be communicated with linear runner, and there is filler opening C variable valve opening upper end.
4. the stroking mechanism of low-speed big plunger piston hydraulic motor according to claim 3, it is characterized in that: in the middle of described variable spool, have annular groove, there are longitudinal aperture and each of horizontal aperture in right side, in external diameter upper groove, circlip is housed, circlip left end is near baffle ring, spring left end acts on the step of variable valve opening, and right-hand member acts on baffle ring.
5. the stroking mechanism of low-speed big plunger piston hydraulic motor according to claim 4, is characterized in that: three linear runners of bonnet are communicated with the annular oil groove of pintle respectively, and filler opening A and the B of bonnet are communicated with annular oil groove respectively.
CN201420241370.XU 2014-05-13 2014-05-13 Low-speed large-torque plunger hydraulic motor variable mechanism CN203835845U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420241370.XU CN203835845U (en) 2014-05-13 2014-05-13 Low-speed large-torque plunger hydraulic motor variable mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420241370.XU CN203835845U (en) 2014-05-13 2014-05-13 Low-speed large-torque plunger hydraulic motor variable mechanism

Publications (1)

Publication Number Publication Date
CN203835845U true CN203835845U (en) 2014-09-17

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500507A (en) * 2014-12-17 2015-04-08 北京航空航天大学 Valve-distributed servo pump with inverted spools and sleeves
CN105317371A (en) * 2015-11-13 2016-02-10 高邮市恒辉机械有限公司 Power head drive device of rotary drilling rig
CN108179985A (en) * 2017-12-07 2018-06-19 江苏中矿立兴能源科技有限公司 Pneumatic roof bolter body

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500507A (en) * 2014-12-17 2015-04-08 北京航空航天大学 Valve-distributed servo pump with inverted spools and sleeves
CN104500507B (en) * 2014-12-17 2016-08-17 北京航空航天大学 Invert the servopump of spool valve pocket Flat valve
CN105317371A (en) * 2015-11-13 2016-02-10 高邮市恒辉机械有限公司 Power head drive device of rotary drilling rig
CN108179985A (en) * 2017-12-07 2018-06-19 江苏中矿立兴能源科技有限公司 Pneumatic roof bolter body

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: NINGBO HELM TOWER NODA HYDRAULIC CO., LTD.

Free format text: FORMER NAME: NINGBO HELM TOWER HYDRAULIC TECHNOLOGY CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 315207, No. 1818 East Luo Luo Road, Zhenhai Town, Zhejiang, Ningbo

Patentee after: NINGBO HENGTONG NUODA HYDRAULIC CO., LTD.

Address before: 315207, No. 1818 East Luo Luo Road, Zhenhai Town, Zhejiang, Ningbo

Patentee before: Ningbo Helm Tower Hydraulic Motor Co., Ltd.