CN107061138A - High-pressure gear motor - Google Patents
High-pressure gear motor Download PDFInfo
- Publication number
- CN107061138A CN107061138A CN201710471441.3A CN201710471441A CN107061138A CN 107061138 A CN107061138 A CN 107061138A CN 201710471441 A CN201710471441 A CN 201710471441A CN 107061138 A CN107061138 A CN 107061138A
- Authority
- CN
- China
- Prior art keywords
- solid box
- sealing ring
- groove
- gear motor
- oil
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C2/00—Rotary-piston engines
- F03C2/08—Rotary-piston engines of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
Abstract
The invention discloses a kind of high-pressure gear motor, including external shell, main shaft, from axle, driving gear, driven gear and solid box, the outer face of the solid box offers seal groove, sealing ring is installed in the seal groove, the seal groove is located at the spindle hole on the solid box and the periphery from axis hole, two the first oil grooves are provided with the solid box, one end of two first oil grooves is connected with the seal groove respectively, the other end extends respectively to the sub-high pressure area of the both sides of the inner face of the solid box, two the second oil grooves axisymmetricly are provided with the inner face of the sealing ring.During present invention work, the pressure oil in the sub-high pressure area of the both sides of the inner face of solid box enters seal groove by the first oil groove, subsequently into the second oil groove on the inner face of sealing ring, so one side pressure oil can promote solid box to float and is brought into close contact with face of gear, and another aspect pressure oil can promote sealing ring to float.
Description
Technical field
The present invention relates to gear motor field, a kind of high-pressure gear motor is related in particular to.
Background technology
Gear motor is widely used in the engineering machines such as loading machine, excavator, crane as the executive component of hydraulic system
In the hydraulic system of tool.
The Chinese patent of Application No. 200810021263.5 discloses a kind of bidirectional geared motor, it is characterized in that setting
Cross between lid and housing, and lid and the composition surface of housing are integral seal groove behind, the integral seal groove be
Connected between outer groove and inner ring " dumbbell " groove with radial direction straight trough, set holohedral symmetry integrated high temperature high to seal corresponding to seal groove
Part, including sealing ring and sealing gasket, sealing ring are the square-section with boss, and sealing gasket is reeded square-section, with close
The groove of packing and the boss of sealing ring are halved together.
Although the sealing structure of this gear motor meets the seal request of gear motor to a certain extent, still
There is gap leakage, when seal compression is smaller, sealing property declines, and gear motor volumetric efficiency is low.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of end clearance and leak small, when seal compression is minimum,
Still ensure that the high-pressure gear motor of sealing property.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：High-pressure gear motor, including external shell
Body, main shaft, from axle, driving gear, driven gear and solid box, the outer face of the solid box offers sealing ring
Sealing ring is installed, the seal groove is located at spindle hole on the solid box and from axis hole in groove, the seal groove
Periphery, be provided with two the first oil grooves on the solid box, one end of two first oil grooves respectively with the sealing ring
Groove is connected, and the other end extends respectively to the sub-high pressure area of the both sides of the inner face of the solid box, the inner of the sealing ring
Two the second oil grooves axisymmetricly are provided with face.
Further, the cross section of the solid box is in 8-shaped, and the sealing ring is corresponding described close in 8 words annular
Seal groove is also in 8 words annular.
Further, first oil groove is by being opened in the segmental arc in the sub-high pressure area of the inner face of the solid box
Groove, be opened in the solid box outer peripheral face bar segment groove and be opened in the solid box outer face short circuit section
Groove is sequentially communicated composition.
Further, two second oil grooves are using the length direction center line of the sealing ring as symmetry axis, two institutes
It is in figure-three to state one in the second oil groove.
Further, on the solid box spindle hole and the 3rd is offered respectively from the inwall of the bearing in axis hole
Oil groove.
Further, offered in the middle part of the outer face of the solid box connect spindle hole on the solid box and from
Spindle hole on the straight trough of axis hole, the solid box and from the bearing in axis hole at the position of the corresponding straight trough
Open up jagged, two oilholes are further opened with the solid box, one end of two oilholes connects with the straight trough respectively
Logical, the other end is connected with the spindle hole on the solid box and from axis hole respectively.
Further, the outer face of the sealing ring is chimeric sealing blend stop.
Further, the sealing blend stop is by the inner sealer in 8 words annular and two width for being located at inner sealer respectively
The outer blend stop of direction both sides, which is connected, to be constituted, and two outer blend stops are symmetrical and enclose to form hourglass shape, the sealing ring
Outer face is provided with two the first fins for being respectively used to be caught between two the outer blend stops and the inner sealer, and two points
Second fin of the other enclosing in the length direction both sides of the inner sealer.
Further, in addition to spindle nose and the rolling bearing on the spindle nose is installed, the external shell is in four vertically
Section is set, and is followed successively by protecgulum, transition cover, housing and bonnet, the two ends of the rolling bearing are respectively clamped into the rear end of the protecgulum
With the front end of the transition cover.
Further, the spindle nose is connected by splined shaft with the main shaft.
Beneficial effects of the present invention are：
During present invention work, the pressure oil in the sub-high pressure area of the both sides of the inner face of solid box is entered by the first oil groove
Seal groove, subsequently into the second oil groove on the inner face of sealing ring, such one side pressure oil can promote solid box to float
It is dynamic to be brought into close contact with face of gear, reduce end clearance leakage, another aspect pressure oil can promote sealing ring to float, make when sealing pressure
When contracting amount is minimum, still ensure its sealing property, so as to greatly improve the volumetric efficiency of gear motor, effectively reduce gear motor
Starting torque.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of the outer face of solid box in one embodiment of the invention.
Fig. 3 is the structural representation of the inner face of solid box in one embodiment of the invention.
Fig. 4 is the profile of solid box in one embodiment of the invention.
Fig. 5 is the profile of one embodiment of the invention middle (center) bearing.
Fig. 6 is the structural representation of the inner face of sealing ring in one embodiment of the invention.
Fig. 7 is the structural representation of the outer face of sealing ring in one embodiment of the invention.
Fig. 8 is the structural representation of sealing blend stop in one embodiment of the invention.
Fig. 9 is the chimeric schematic diagram of sealing ring and sealing blend stop in one embodiment of the invention.
Figure 10 is A-A to sectional view.
In accompanying drawing the mark of each part for：1 solid box, 11 seal grooves, 12 spindle holes, 13 are from axis hole, 14 segmental arcs
Groove, 15 bar segment grooves, 16 short circuits section groove, 17 straight troughs, 18 oilholes, 19 antennal furrows, 2 sealing rings, 21 second oil grooves, 22 feelers, 23
Locking salient point, 24 first fins, 25 second fins, 26 the 3rd fins, 31 inner sealers, 32 outer blend stops, 33 feeler blend stops, 4 bearings,
41 breach, 42 the 3rd oil grooves, protecgulum 51, transition cover 52, housing 53, bonnet 54, main shaft 61, from axle 62, splined shaft 63, driving tooth
Wheel 71, driven gear 72, spindle nose 8, rolling bearing 9.
Embodiment
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
Referring to Fig. 1, Fig. 2 and Fig. 6.
The high-pressure gear motor of one embodiment of the invention, including external shell, main shaft 61, from axle 62, driving gear 71, from
Moving gear 72 and solid box 1, the outer face of the solid box 1 are offered in seal groove 11, the seal groove 11
Sealing ring 2 is installed, the seal groove 11 is located at the spindle hole 12 on the solid box 1 and the periphery from axis hole 13, institute
State and two the first oil grooves be provided with solid box 1, one end of two first oil grooves is connected with the seal groove 11 respectively,
The other end extends respectively to open on the sub-high pressure area of the both sides of the inner face of the solid box 1, the inner face of the sealing ring 2
There are two the second oil grooves 21 axisymmetricly.
During present invention work, the pressure oil in the sub-high pressure area of the both sides of the inner face of solid box is entered by the first oil groove
Seal groove, subsequently into the second oil groove on the inner face of sealing ring, such one side pressure oil can promote solid box to float
It is dynamic to be brought into close contact with face of gear, reduce end clearance leakage, another aspect pressure oil can promote sealing ring to float, make when sealing pressure
When contracting amount is minimum, still ensure its sealing property, so as to greatly improve the volumetric efficiency of gear motor, effectively reduce gear motor
Starting torque.
In specific implementation, the cross section of the solid box 1 is in 8-shaped, and the sealing ring 2 is in 8 words annular, corresponding institute
Seal groove 11 is stated also in 8 words annular.
Referring to Fig. 2, Fig. 3 and Fig. 4, it is preferred that two first oil grooves symmetrically, in one embodiment, described the
One oil groove is by being opened in the segmental arc groove 14 in the sub-high pressure area of the inner face of the solid box 1, being opened in the solid box 1
Outer peripheral face bar segment groove 15 and be opened in the solid box 1 outer face short circuit section groove 16 be sequentially communicated composition.
In specific implementation, the bar segment groove 15 along the axially extending of the solid box, the segmental arc groove 14 with its middle part with
The bar segment groove 15 is connected.The asphalt channel so designed, in the case where not influenceing gear motor performance, in gear motor
During work, it can guarantee that sub-high pressure area pressure oil fast and effeciently enters the second oil groove.
Referring to Fig. 6, in one embodiment, one in two second oil grooves 21 is in figure-three, two second oil
Groove 21 is using the length direction center line of the sealing ring 2 as symmetry axis.So design can guarantee that effect of the sealing ring in pressure oil
Lower stress is uniform, reaches preferable floating effect, improves sealing property.
Lubricating loop can not be formed on existing solid box, the lubrication of bearing and cooling can only rely on Bearing inner oil groove,
Easily cause and lubricate insufficient, thermal balance is bad, influence the performance under motor high temperature, high rotating speed, high pressure.
In order to solve this problem, referring to Fig. 2, in one embodiment, spindle hole 12 on the solid box 1 and from axle
The 3rd oil groove 42 is offered on the inwall of bearing 4 in hole 13 respectively, the two ends of the 3rd oil groove 42 extend respectively to the interior of bearing 4
Outer face.In the course of work of gear motor, axle sleeve inner face leakage pressure oil by the 3rd oil groove enter spindle hole and
From axis hole, lubricating oil film is fast and effeciently formed between bearing inner wall and axle from face.In specific implementation, the 3rd oil groove 42 along
Accordingly bearing is axially extending.
Referring to Fig. 2, Fig. 4 and Fig. 5, in a preferred embodiment, offered in the middle part of the outer face of the solid box 1
Connect spindle hole 12 on the spindle hole 12 on the solid box 1 and the straight trough 17 from axis hole 13, the solid box 1 and from
Open up and also opened on jagged 41, the solid box 1 at the position of the corresponding straight trough 17 on bearing 4 in axis hole 13
Provided with two oilholes 18, one end of two oilholes 18 is connected with the straight trough 17 respectively, the other end respectively with the entirety
Spindle hole 12 on axle sleeve 1 is connected with from axis hole 13.Bearing 4 can select DU bearings, and when gear motor works, axle sleeve inner face is let out
The pressure oil of leakage enters spindle hole from the 3rd oil groove and is lubricated from axis hole, and then a part of pressure oil enters straight trough, and then
Enter spindle hole and from the bearing in axis hole by two oilholes, enter back into breach, eventually pass back to straight trough, so form circulation
Loop, so as to fast and effeciently form lubricating oil film between bearing inner wall and axle, good lubrication is served to bearing and cold
But act on, fully ensure that thermal balance of the gear motor under high temperature, high pressure, high speed conditions.
In specific implementation, one end of the oilhole 18 extends since the bottom wall of straight trough 17, and two oilholes 18
Connectivity points of the other end to the spindle hole 12 and from axis hole 13 be located at the spindle hole 12 and the corresponding bearing from axis hole 13
Inner position at, such pressure oil is easier to enter bearing, and lubricant effect is reliable.
Referring to Fig. 6, in one embodiment, the length direction both sides of the sealing ring 2 are respectively equipped with multiple locking salient points 23.
For avoid when mounted sealing ring come off.
In one embodiment, the outer face of the sealing ring 2 is chimeric sealing blend stop.Seal blend stop gear motor it is high,
Low-pressure area can play good supporting role when exchanging to sealing ring.
Referring to Fig. 7, Fig. 8, Fig. 9 and Figure 10, in one embodiment, the sealing blend stop is by the inner sealer 31 in 8 words annular
And two outer blend stops 32 respectively positioned at the width both sides of inner sealer 31 are connected and constituted, two outer blend stops 32 are mutual
Symmetrical and enclose to form hourglass shape, the outer face of the sealing ring 2 is respectively used to be caught in two outer blend stops 32 provided with two
The first fin 24 between the inner sealer 31, and two difference enclosings are in the length direction both sides of the inner sealer 31
Second fin 25.So design, sealing ring and sealing blend stop are on the premise of the sealing property of bidirectional geared motor is ensured, structure
More rationally, processing is simple, is easy to assembling.
In specific implementation, sealing ring uses elastomeric material, and -40 DEG C of temperature resistant range~200 DEG C reach what high/low temperature was taken into account
Effect.
Referring to Fig. 2 and Fig. 6, in one embodiment, the sealing ring 2 is provided with more than two feelers 22, the entirety
The outer face of axle sleeve 1, which is provided with, is used for the antennal furrow 19 that the feeler 22 is caught in.
In specific implementation, the sealing ring 2 is provided with four feelers 22, and four feelers 22 are with the length direction of sealing ring
Heart line and width center line are that symmetry axis is symmetrical.
Referring to Fig. 7 and Fig. 8, to coordinate four feelers, the two ends of the outer blend stop 32 are outward extended with feeler blend stop respectively
33, the feeler blend stop 33 is entrenched on corresponding feeler 22.Correspondingly, the outer face of the feeler 22, which is provided with, is used for enclosing institute
State the 3rd fin 26 of feeler blend stop 33.
Referring to Fig. 1, in one embodiment, in addition to spindle nose 8 and the rolling bearing 9 on the spindle nose 8, the outside are installed
Housing in four sections of settings, is followed successively by protecgulum 51, transition cover 52, housing 53 and bonnet 54, the two ends of the rolling bearing 9 vertically
It is respectively clamped into the rear end of the protecgulum 51 and the front end of the transition cover 52.The present invention will pass through between existing protecgulum and transition cover
The mode of seam positioning, is changed to be positioned by rolling bearing, can effectively reduce axial dimension, reduces and coordinates link, drop
Low processing and assembly difficulty, reduce cost.
Referring to Fig. 1, in one embodiment, the spindle nose 8 is connected by splined shaft 63 with the main shaft 61.The present invention will be existing
Have between spindle nose and main shaft by way of cruciform joint couples, be changed to be coupled by splined shaft, namely spindle nose and gear
Interior coupling part by existing flat key connecting be changed to SAE splines connection, the transmission intensity of gear motor can be effectively improved, subtracted
Small axial length, improves the overall performance of gear motor, reduces processing cost.
Present invention is particularly suitable for be used as bidirectional geared motor.
It should be understood that example as described herein and embodiment are not intended to limit the invention, this area only for explanation
Technical staff can make various modifications or change according to it, within the spirit and principles of the invention, any modification for being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
1. high-pressure gear motor, including external shell, main shaft (61), from axle (62), driving gear (71), driven gear (72) with
And solid box (1), it is characterised in that：The outer face of the solid box (1) offers seal groove (11), the sealing ring
Sealing ring (2) is installed in groove (11), the seal groove (11) be located at spindle hole (12) on the solid box (1) and from
Be provided with two the first oil grooves on the periphery of axis hole (13), the solid box (1), one end of two first oil grooves respectively with
Seal groove (11) connection, the other end extends respectively to the sub-high pressure area of the both sides of the inner face of the solid box (1),
Two the second oil grooves (21) axisymmetricly are provided with the inner face of the sealing ring (2).
2. high-pressure gear motor as claimed in claim 1, it is characterised in that：The cross section of the solid box (1) is in 8 words
Shape, the sealing ring (2) is in 8 words annular, and the corresponding seal groove (11) is also in 8 words annular.
3. high-pressure gear motor as claimed in claim 1 or 2, it is characterised in that：First oil groove is described whole by being opened in
The segmental arc groove (14) in the sub-high pressure area of the inner face of body axle sleeve (1), be opened in the solid box (1) outer peripheral face bar shaped
Section groove (15) and be opened in the solid box (1) outer face short circuit section groove (16) be sequentially communicated composition.
4. high-pressure gear motor as claimed in claim 1 or 2, it is characterised in that：Two second oil grooves (21) are with described
The length direction center line of sealing ring (2) is symmetry axis, and one in two second oil grooves (21) is in figure-three.
5. high-pressure gear motor as claimed in claim 1 or 2, it is characterised in that：The outer face of the sealing ring (2) is chimeric to be had
Seal blend stop.
6. high-pressure gear motor as claimed in claim 5, it is characterised in that：The sealing blend stop is by the interior gear in 8 words annular
Bar (31) and two outer blend stops (32) respectively positioned at the width both sides of inner sealer (31), which are connected, to be constituted, and two described outer
Blend stop (32) is symmetrical and encloses to form hourglass shape, and the outer face of the sealing ring (2) is respectively used to be caught in two provided with two
The first fin (24) described in bar between outer blend stop (32) and the inner sealer (31), and two difference enclosings are in the interior gear
The second fin (25) of the length direction both sides of bar (31).
7. high-pressure gear motor as claimed in claim 1 or 2, it is characterised in that：Also include spindle nose (8) and the spindle nose is installed
(8) rolling bearing (9) on, the external shell in four sections of settings, is followed successively by protecgulum (51), transition cover (52), shell vertically
Body (53) and bonnet (54), the two ends of the rolling bearing (9) are respectively clamped into the rear end of the protecgulum (51) and the transition cover
(52) front end.
8. high-pressure gear motor as claimed in claim 7, it is characterised in that：The spindle nose (8) passes through splined shaft (63) and institute
State main shaft (61) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471441.3A CN107061138B (en) | 2017-06-20 | 2017-06-20 | High-pressure gear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471441.3A CN107061138B (en) | 2017-06-20 | 2017-06-20 | High-pressure gear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061138A true CN107061138A (en) | 2017-08-18 |
| CN107061138B CN107061138B (en) | 2021-01-05 |
Family
ID=59594159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471441.3A Active CN107061138B (en) | 2017-06-20 | 2017-06-20 | High-pressure gear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107061138B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594124A (en) * | 2021-01-27 | 2021-04-02 | 合肥皖液液压元件有限公司 | Novel integrated motor with automatic unloading function of overload |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0343166B1 (en) * | 1987-01-16 | 1991-09-25 | Robert Bosch Gmbh | Gear machine (pump or engine) |
| CN1342842A (en) * | 2000-09-11 | 2002-04-03 | 济南液压泵有限责任公司 | Gear pump with bidirectional compensator for axial sealing |
| CN202597469U (en) * | 2012-05-26 | 2012-12-12 | 江苏国瑞液压机械有限公司 | Internal-leakage type gear motor shaft sleeve |
| CN104196717A (en) * | 2014-08-20 | 2014-12-10 | 合肥长源液压股份有限公司 | Gear motor side plate with bidirectional support guide type combined sealing structure |
| CN204126891U (en) * | 2014-09-01 | 2015-01-28 | 泸州国邦机械有限公司 | The floating side plate of high volumetric efficiency gear pump |
| CN105673694A (en) * | 2016-03-21 | 2016-06-15 | 泸州思邦科技有限公司 | Integral shaft sleeve of bidirectional gear type hydraulic motor |
| CN206801777U (en) * | 2017-06-20 | 2017-12-26 | 合肥长源液压股份有限公司 | High-pressure gear motor |
-
2017
- 2017-06-20 CN CN201710471441.3A patent/CN107061138B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0343166B1 (en) * | 1987-01-16 | 1991-09-25 | Robert Bosch Gmbh | Gear machine (pump or engine) |
| CN1342842A (en) * | 2000-09-11 | 2002-04-03 | 济南液压泵有限责任公司 | Gear pump with bidirectional compensator for axial sealing |
| CN202597469U (en) * | 2012-05-26 | 2012-12-12 | 江苏国瑞液压机械有限公司 | Internal-leakage type gear motor shaft sleeve |
| CN104196717A (en) * | 2014-08-20 | 2014-12-10 | 合肥长源液压股份有限公司 | Gear motor side plate with bidirectional support guide type combined sealing structure |
| CN204126891U (en) * | 2014-09-01 | 2015-01-28 | 泸州国邦机械有限公司 | The floating side plate of high volumetric efficiency gear pump |
| CN105673694A (en) * | 2016-03-21 | 2016-06-15 | 泸州思邦科技有限公司 | Integral shaft sleeve of bidirectional gear type hydraulic motor |
| CN206801777U (en) * | 2017-06-20 | 2017-12-26 | 合肥长源液压股份有限公司 | High-pressure gear motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594124A (en) * | 2021-01-27 | 2021-04-02 | 合肥皖液液压元件有限公司 | Novel integrated motor with automatic unloading function of overload |
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| Publication number | Publication date |
|---|---|
| CN107061138B (en) | 2021-01-05 |
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