CN204877779U - Linear type piston rod hydraulic motor - Google Patents
Linear type piston rod hydraulic motor Download PDFInfo
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- CN204877779U CN204877779U CN201520316168.3U CN201520316168U CN204877779U CN 204877779 U CN204877779 U CN 204877779U CN 201520316168 U CN201520316168 U CN 201520316168U CN 204877779 U CN204877779 U CN 204877779U
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- connecting rod
- oil
- piston
- eccentric wheel
- cylinder
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Abstract
The utility model discloses a linear type piston rod hydraulic motor, its structure characterized in that: this structure mainly includes frame, connecting rod, armful tile, eccentric wheel, base bearing, hydraulic pressure cylinder liner, a type frame cylinder body, piston, oil circuit, valve plate, main shaft. The hydro -cylinder of this motor is the inline, and the frame is used for supporting the main shaft, the eccentric wheel links to each other with the main shaft, the connecting rod is located the eccentric wheel top, and the connecting rod tip passes through to embrace a sliding fit made of baked clay with the eccentric wheel, the piston is located the connecting rod top, passes through the piston pin with the connecting rod tip and is connected, at piston crown installation sealing ring, a type frame cylinder body is used for supporting, location hydraulic pressure cylinder liner to built -in hydraulic oil runner, top land, hydraulic pressure cylinder liner constitute sealed oil pocket with the cylinder cap. This the effectual radial dimension who reduces equipment of name is applicable to the limited place of radial space, has increased output torque, has reduced the ripple frequency, has improved job stabilization nature.
Description
Technical field
The invention discloses a kind of structure of novel piston rod oil hydraulic motor, linear travel piston connecting rod oil hydraulic motor, belongs to mechanical engineering field.
Background technique
Oil hydraulic motor is the executive component in Hydraulic Power Transmission System, and the hydraulic energy of its self-hydraulic pump output in the future converts the mechanical energy as rotation motion to, thus drives load campaign.Traditional piston connecting rod type oil hydraulic motor is a kind of radial plunger low speed high torque hydraulic motor, and this motor configuration is generally five oil cylinders (or seven oil cylinders) and is circumferentially being evenly arranged, and forms star housing.Existing plunger connecting rod motor critical piece is made up of plunger, connecting rod, bent axle, star housing and pintle etc., there is following problem: (1) arranges at even circumferential due to the oil cylinder of traditional plunger linkage rod type hydraulic motor, and shared radial space is larger; (2) traditional plunger linkage rod type hydraulic motor causes oil hydraulic cylinder negligible amounts due to oil cylinder circumference, and output torque is limited, and output torque uniformity and low-speed stability poor.
Summary of the invention
The present invention proposes a kind of structural type of novel piston linkage rod type hydraulic motor, can radial space be reduced, effectively utilize axial space, export larger moment of torsion in the course of the work, reduce Driving Torque pulsation, improve low-speed stability.
In order to achieve the above object, the technical solution used in the present invention is:
Linear travel piston connecting rod oil hydraulic motor, is characterized in that: this structure mainly comprises support, connecting rod, axis tile, A type frame cylinder body, hydraulic cylinder, eccentric wheel, thrust plate, main shaft.Motor oil cylinder is arranged in a linear, each oil cylinder is all equipped with piston, eccentric wheel and main shaft fixedly mount, and and spindle synchronous, can 360 ° of rotations, piston is connected by wrist pin with wrist-pin end of connecting rod, and connecting rod tip is then close on eccentric wheel, the axis tile formed by upper and lower watt is waled, and ensures that connecting rod tip does not depart from eccentric wheel.Oil cylinder is furnished with hydraulic fluid port, and according to the principle of uniform force, be oil cylinder fuel feeding, namely spacing angle of oil supply should be identical, and by the order fuel feeding of regulation, each eccentric wheel deflection angle difference should be φ=360 °/n (n represents the quantity of oil hydraulic cylinder); Each cylinder sequence of motion is determined by the fuel feeding order of thrust plate; Seal ring is furnished with at piston head.
The present invention is compared with background technique, and having useful effect is:
(1) hydraulic jack of motor linearly type arrangement, is applicable to the place that radial space is limited.
(2) by linear array, hydraulic jack number can effectively increase, thus output torque is obviously strengthened, and significantly can improve the uniformity of output torque and the stability of motor operation.
Accompanying drawing explanation
Fig. 1 linear travel piston connecting rod hydraulic motor structure schematic diagram
Fig. 2 linear travel piston connecting rod oil hydraulic motor hydraulic control oil circuit figure
Fig. 3 linear travel piston connecting rod oil hydraulic motor oil hydraulic cylinder acting precedence diagram
In figure: 1, support, 2, connecting rod, 3, axis tile, 4, eccentric wheel, 5, main bearing, 6, hydraulic cylinder, 7, A type frame cylinder body, 8, piston, 9, oil circuit, 10, thrust plate, 11, main shaft, 12, main pump, 13, auxiliary pump, 14, fuel tank, 15, filter, 16, safety valve, 17,3-position 4-way electro-hydraulic reversing valve, 18, equilibrium valve, 19, braking relief valve group, 20, meta bypass valve, 21, back pressure valve, 22, low pressure selector valve, a, b port is connected with the oil pocket of thrust plate
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, linear travel piston connecting rod oil hydraulic motor, its structure characteristic is: this motor mainly comprises support 1, connecting rod 2, axis tile 3, eccentric wheel 4, main bearing 5, hydraulic cylinder 6, A type frame cylinder body 7, piston 8, oil circuit 9, thrust plate 10, main shaft 11.Support 1 is for supports main shaft 11; Eccentric wheel 4 is connected with main shaft 11; Connecting rod is positioned at above eccentric wheel 4, and connecting rod tip and eccentric wheel 4 are slidably matched by axis tile 3; Piston 8 is positioned at above connecting rod 2, is connected by wrist pin with wrist-pin end of connecting rod, and piston 8 head installs seal ring; A type frame cylinder body 7 is for support, positioning hydraulic cylinder sleeve 6, and built-in hydraulic oil runner; Piston 8 top, hydraulic cylinder 6 form seal oil chamber with cylinder cap.
As shown in Figure 2, linear travel piston connecting rod oil hydraulic motor, its hydraulic control oil circuit comprises main pump 12, auxiliary pump 13, fuel tank 14, filter 15, safety valve 16,3-position 4-way electro-hydraulic reversing valve 17, equilibrium valve 18, braking relief valve group 19, meta bypass valve 20, back pressure valve 21, low pressure selector valve 22.Main pump 12 exports and is connected with 3-position 4-way electro-hydraulic reversing valve 17, safety valve 16; Be connected with equilibrium valve 18-1 when electro-hydraulic reversing valve 17 is operated in left position; Braking relief valve group 19, meta bypass valve 20 and low pressure selector valve 22, together oil circuit control is connected respectively in left oil circuit bifurcation; When main pump 12 exports and is connected with the right position of electro-hydraulic reversing valve 17, the right position of electro-hydraulic reversing valve 17 is connected with equilibrium valve 18-2; Braking relief valve group 19, meta bypass valve 20 and low pressure selector valve 22, together oil circuit control is connected respectively in right oil circuit bifurcation; Hydraulic oil backflow fuel tank all needs to connect with filter 15-4,15-1.
Linear travel piston connecting rod oil hydraulic motor hydraulic control oil circuit, its working principle is: main pump 12 provides hydraulic oil to oil circuit, if when now 3-position 4-way electro-hydraulic reversing valve 17 is operated in left position, high pressure liquid force feed enters into motor operations oil cylinder by left oil circuit a port, is back to fuel tank by b port.Safety valve 16 is used for limiting the maximum pressure of hydraulic oil that main pump 12 exports; The MTP that braking relief valve group 19 is used for restriction high-pressure oil pipe, prevent booster, and auxiliary pump 13 can pass through braking relief valve group 19 to working connection repairing; Meta bypass valve 20 and low pressure selector valve 22 combination are used for the high-temperature liquid force feed of working connection to release in fuel tank.
Thrust plate 10 communicates with the oil circuit being connected each cylinder as shown in Figure 3, the order of the hydraulic oil of oil circuit control according to each cylinder Driving Torque is transported to successively in each oil cylinder.
Linear travel piston connecting rod oil hydraulic motor, working principle is described with shown in Fig. 3: when the high pressure liquid force feed of working connection a port enters into the hyperbaric chamber of thrust plate 10, pressure oil enters IX through hyperbaric chamber, II, VIII, III oil cylinder, such promotion piston moves downward, pass through connecting rod, force transmission downward for piston on eccentric wheel, because the eccentric center of circle and the main shaft center of circle exist throw of eccentric, this active force produces moment to main shaft, spindle axis counterclockwise is rotated, form torque, meanwhile, low-pressure cavity is communicated with VI, IV, VII, V oil cylinder, hydraulic oil in respective cylinder room enters b port through low-pressure cavity, by equilibrium valve 18-2, left position and the filter 15-1 of 3-position 4-way electro-hydraulic reversing valve 17 are back to fuel tank.When arriving lower dead center under the promotion at oil pressure of the piston of oil-feed cylinder, due to the synchronous rotary of thrust plate, oil-feed cylinder just starts to stagger with hyperbaric chamber, is about to connect, in order to oil extraction with low-pressure cavity.When piston arrives top dead center, oil cylinder can stagger with low-pressure cavity again, communicates with hyperbaric chamber, starts feed liquor force feed.So once thrust plate starts to rotate under the oil pressure of hyperbaric chamber promotes, oil extraction is constantly entered according to acting order in each cylinder room, makes the main shaft continuous rotation of motor.If need motor spindle to turn clockwise, only 3-position 4-way electro-hydraulic reversing valve 17 in accompanying drawing 2 need be operated in right position, motor spindle can turn clockwise.When motor running, oil pocket back pressure can be realized by equilibrium valve 18 in accompanying drawing 2; Piston in each oil hydraulic cylinder is according to acting sequential movements, and can ensure main shaft uniform force, motor running is steady.
Claims (5)
1. linear travel piston connecting rod oil hydraulic motor, its structure characteristic is: this structure mainly comprises support (1), connecting rod (2), axis tile (3), eccentric wheel (4), main bearing (5), hydraulic cylinder (6), A type frame cylinder body (7), piston (8), oil circuit (9), thrust plate (10), main shaft (11), this motor oil cylinder is arranged in a linear, and support (1) is for supports main shaft (11); Eccentric wheel (4) is connected with main shaft (11); Connecting rod (2) is positioned at eccentric wheel (4) top, and connecting rod tip and eccentric wheel (4) are slidably matched by axis tile (3); Piston (8) is positioned at connecting rod (2) top, is connected by wrist pin with wrist-pin end of connecting rod, and piston (8) head installs seal ring; A type frame cylinder body (7) is for support, positioning hydraulic cylinder sleeve (6), and built-in hydraulic oil runner; Piston (8) top, hydraulic cylinder (6) form seal oil chamber with cylinder cap.
2. linear travel piston connecting rod oil hydraulic motor according to claim 1, it is characterized in that described hydraulic cylinder (6) is arranged in a linear, each oil hydraulic cylinder is order Driving Torque according to the rules.
3. linear travel piston connecting rod oil hydraulic motor according to claim 1, it is characterized in that the quantity of hydraulic cylinder (6) can be more than or equal to 3, adjacent eccentric wheel (4) is arranged according to the angle of deflection 360 °/n, wherein n represents the number of hydraulic cylinder (6), each oil hydraulic cylinder room Driving Torque in turn.
4. linear travel piston connecting rod oil hydraulic motor according to claim 1, is characterized in that main shaft (11) and thrust plate (10) synchronous rotary.
5. linear travel piston connecting rod oil hydraulic motor according to claim 1, is characterized in that its flow mode can adopt high-pressure common rail fuel system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316168.3U CN204877779U (en) | 2015-05-10 | 2015-05-10 | Linear type piston rod hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316168.3U CN204877779U (en) | 2015-05-10 | 2015-05-10 | Linear type piston rod hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204877779U true CN204877779U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520316168.3U Expired - Fee Related CN204877779U (en) | 2015-05-10 | 2015-05-10 | Linear type piston rod hydraulic motor |
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| Country | Link |
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| CN (1) | CN204877779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275733A (en) * | 2015-05-10 | 2016-01-27 | 大连海事大学 | Linear type piston rod hydraulic motor |
| CN106917789A (en) * | 2017-04-25 | 2017-07-04 | 大连海事大学 | V-shape piston rod hydraulic motor |
-
2015
- 2015-05-10 CN CN201520316168.3U patent/CN204877779U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275733A (en) * | 2015-05-10 | 2016-01-27 | 大连海事大学 | Linear type piston rod hydraulic motor |
| CN106917789A (en) * | 2017-04-25 | 2017-07-04 | 大连海事大学 | V-shape piston rod hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |