CN212985443U - Hydraulic motor with double-shaft output - Google Patents
Hydraulic motor with double-shaft output Download PDFInfo
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- CN212985443U CN212985443U CN202021735397.6U CN202021735397U CN212985443U CN 212985443 U CN212985443 U CN 212985443U CN 202021735397 U CN202021735397 U CN 202021735397U CN 212985443 U CN212985443 U CN 212985443U
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Abstract
The utility model discloses a double-shaft output hydraulic motor, which comprises an oil through disc and a shell spliced on two sides, wherein a rotatable valve shaft is arranged in the oil through disc, a crankshaft is arranged in the shell, and one end of the crankshaft is axially connected with the valve shaft; a tilt cylinder is arranged in the shell, a bearing sleeve is sleeved at the eccentric part of the crankshaft, and a plurality of plungers are arranged in the tilt cylinder around the bearing sleeve; an oil inlet and an oil outlet, a first oil passage communicated with the left side tilt cylinder and a second oil passage communicated with the right side tilt cylinder are formed in the side wall of the oil passing disc, and an oil inlet passage communicated with the oil inlet and an oil outlet passage communicated with the oil outlet are formed in the flow distribution shaft; after high-pressure oil is sucked, the high-pressure oil enters the left side tilt cylinder through the oil inlet channel and the first oil passage and acts on the plunger to drive the left side crankshaft to rotate; the oil enters the right side tilt cylinder through the oil inlet channel and the second oil channel to act on the plunger, so as to drive the right side crankshaft to rotate; the flow distribution shaft synchronously rotates along with the crankshaft, high-pressure oil is alternately communicated from each first oil passage and each second oil passage, and therefore rotating speed and torque output on two sides of the motor is achieved.
Description
Technical Field
The utility model relates to a hydraulic motor technical field especially relates to a hydraulic motor of biax output.
Background
The hydraulic motor is an actuator of a hydraulic system, and converts the pressure energy of the fluid provided by the hydraulic pump into the mechanical energy (torque and rotation speed) of its output shaft, and the fluid is the medium for transmitting force and motion. The hydraulic motor is widely applied to the fields of injection molding machinery, ships, lifting machines, engineering machinery, construction machinery, coal mine machinery, mining machinery, metallurgical machinery, ship machinery, petrochemical industry, port machinery and the like.
The equipment such as a milling and excavating machine, a hydraulic groove milling machine and the like needs to adopt a hydraulic motor with double-shaft output due to the special working condition requirement. The existing hydraulic motors for milling and excavating machines and hydraulic double-wheel slot milling machines are mainly double-shaft output hydraulic motors imported from herglon, italy. The imported equipment has the defects of high investment cost, long imported delivery period and the like; meanwhile, the condition that the motor is damaged frequently occurs due to the fact that the working conditions of the milling and excavating machine and the slot milling machine are poor, the motor is difficult to maintain due to domestic maintenance capability, and cross-border maintenance is very troublesome. Therefore, a double-shaft output hydraulic motor is urgently needed to be developed to replace an inlet motor so as to meet the use requirements of a milling and excavating machine and a hydraulic slotter.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic motor of biax output, investment cost is low, the stable performance is reliable, can satisfy the user demand of milling biax output devices such as digger and hydraulic groove cutting machine.
To the above problem, the utility model discloses a technical scheme be: the hydraulic motor with double-shaft output comprises an oil through disc and shells symmetrically spliced on the left side and the right side of the oil through disc, wherein a rotatable flow distribution shaft is arranged in a shaft hole of the oil through disc, a crankshaft is transversely arranged at the center of the shell, one end of the crankshaft extends out of the shell to form an output shaft, and the other end of the crankshaft is axially connected with the flow distribution shaft; a tilt cylinder is arranged in the shell, a bearing sleeve is sleeved at the eccentric position of the crankshaft, and odd plungers are arranged in the tilt cylinder around the bearing sleeve; an oil inlet and an oil outlet are arranged on the side wall of the oil through disc side by side, a first oil through passage communicated with each plunger on the left side and a second oil through passage communicated with each plunger on the right side are arranged in the oil through disc, an oil inlet passage communicated with the oil inlet, the first oil through passage and the second oil through passage, and an oil outlet passage communicated with the oil outlet, the first oil through passage and the second oil through passage are arranged in the flow distribution shaft; after entering through the oil inlet, high-pressure oil enters the left tilt cylinder through the oil inlet channel and the first oil passage in sequence to act on the left plunger piston, so that the left crankshaft is driven to rotate; high-pressure oil enters the right tilt cylinder through the oil inlet channel and the second oil channel and acts on the right plunger piston to drive the right crankshaft to rotate; the rotation of the crankshaft further drives the rotation of the valve shaft, the rotation of the valve shaft realizes that high-pressure oil alternately flows through the first oil passage and the second oil passage which are communicated with each plunger, and therefore the rotation and torque output of output shafts on two sides of the motor are realized.
Preferably, the number of the first oil passage and the second oil passage is respectively matched with the number of the plungers on the left side and the right side, the first oil passage is uniformly distributed on the side wall of the left part of the oil through disc along the radial direction, and the second oil passage is uniformly distributed on the side wall of the right side of the oil through disc along the radial direction.
Preferably, the oil inlet channel comprises a plurality of axial oil inlet channels which are axially arranged in parallel inside the flow distribution shaft, and the oil outlet channel comprises a plurality of axial oil outlet channels which are axially arranged in parallel inside the flow distribution shaft; the oil distribution plate is close to the surface of the flow distribution shaft, a first oil inlet cavity is arranged at a position corresponding to the oil inlet, a first oil outlet cavity is arranged at a position corresponding to the oil outlet, a first radial oil inlet channel communicated with the axial oil inlet channel is radially arranged on the axial oil inlet channel, a first radial oil outlet channel communicated with the axial oil outlet channel is radially arranged on the axial oil outlet channel, and the flow distribution shaft rotates to enable the axial oil inlet channel to be sequentially communicated with the first oil inlet cavity and the first oil outlet cavity through the first radial oil inlet channel and enable the axial oil outlet channel to be sequentially communicated with the first oil outlet cavity and the first oil inlet cavity through the first radial oil outlet channel; the surface of the oil through disc, which is close to the oil distribution shaft, is provided with a second oil inlet cavity and a first oil outlet cavity which are communicated with the first oil through channel, the number of the first oil through channels communicated with the second oil inlet cavity is more than that of the first oil outlet cavity, the axial oil inlet channel is radially provided with a second radial oil inlet channel communicated with the axial oil inlet channel, the axial oil outlet channel is radially provided with a second radial oil outlet channel communicated with the axial oil outlet channel, and the oil distribution shaft rotates to enable the axial oil inlet channel to be sequentially communicated with the second oil inlet cavity and the second oil outlet cavity through the second radial oil inlet channel and enable the axial oil outlet channel to be sequentially communicated with the second oil outlet cavity and the second oil inlet cavity through the second radial oil outlet channel; the oil distribution plate is characterized in that a third oil inlet cavity and a third oil outlet cavity which are communicated with a second oil passage are formed in the surface, close to the oil distribution shaft, of the oil distribution plate, the number of the second oil passages communicated with the third oil inlet cavity is more than that of the third oil outlet cavity, a third radial oil inlet channel communicated with the axial oil inlet channel is radially arranged on the axial oil inlet channel, a third radial oil outlet channel communicated with the axial oil outlet channel is radially arranged on the axial oil outlet channel, and the oil distribution shaft rotates to enable the axial oil inlet channel to be sequentially communicated with the third oil inlet cavity and the third oil outlet cavity through the third radial oil inlet channel and enable the axial oil outlet channel to be sequentially communicated with the third oil outlet cavity and the third oil inlet cavity through the third.
Preferably, the first oil passage and the second oil passage are connected with a hole oil passage of the tilt cylinder through a floating sleeve and act on each plunger.
Preferably, two ends of the flow distribution shaft are supported in a shaft hole of the oil through disc through bearings, and two end faces of the flow distribution shaft are axially connected with the crankshafts on the left side and the right side through double-headed keys.
Preferably, one end of the crankshaft is supported in the shell through a bearing, the other end of the crankshaft is supported in the oil through disc through a bearing, and the shell is connected with the oil through disc through a bolt.
Preferably, two sides of each radial oil passage of the port shaft are respectively provided with a high-pressure rotary sealing ring to realize radial sealing.
Preferably, the plunger is matched with the bearing sleeve through an arc surface, and a roller is arranged between the bearing sleeve and the eccentric part of the crankshaft.
Preferably, 5 plungers are provided in each of the right and left tilt cylinders.
The utility model has the advantages that: 1. an oil inlet and an oil outlet are adopted to realize flow distribution in the left side and the right side of a middle rotating flow distribution shaft, and a radial piston pushes an eccentric crankshaft to realize the output of double-shaft torque in the left side and the right side; 2. and all oil ports of the valve shaft are sealed by adopting high-pressure rotary sealing rings, so that absolute independent oil passing among all oil ducts is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a partial view of the port shaft portion of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 5 is a sectional view taken in the direction C-C in fig. 1.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1 to 5, an embodiment of the present invention includes:
a hydraulic motor with double-shaft output comprises an oil through disc 1 and shells 7 symmetrically spliced on the left side and the right side of the oil through disc 1, wherein a rotatable flow distribution shaft 2 is arranged in a shaft hole of the oil through disc 1, a crankshaft 11 is transversely arranged at the center of each shell 7, one end of each crankshaft 11 extends out of each shell 7 to form an output shaft 11a, and the other end of each crankshaft 11 is axially connected with the flow distribution shaft 2 through a double-headed key 13; a tilt cylinder 9 is arranged in the shell 1, a ball sleeve 10 is sleeved at the eccentric position of the crankshaft 11, and five plungers 8 are arranged in the tilt cylinder 9 around the ball sleeve 10; the plunger 8 is matched with the ball sleeve 10 through an arc surface, and a roller 12 is arranged between the ball sleeve 10 and the eccentric part of the crankshaft 11.
An oil inlet 14 and an oil outlet 15 are arranged on the side wall of the oil through disc 1 side by side, five first oil through channels 16 communicated with each left plunger 8 and five second oil through channels 17 communicated with each right plunger 8 are arranged on the left portion of the oil through disc 1 along the radial direction, an oil inlet channel 18 communicated with the oil inlet 14, the first oil through channels 16 and the second oil through channels 17 and an oil outlet channel 19 communicated with the oil outlet 15, the first oil through channels 16 and the second oil through channels 17 are arranged in the flow distribution shaft 2; the oil inlet channels 18 comprise three axial oil inlet channels 18 which are axially arranged in parallel in the flow distribution shaft 2, a pair of first half-moon grooves are arranged on the oil passing disc 1, close to the surface of the flow distribution shaft 2 and at positions corresponding to the oil inlet 14 and the oil outlet 15, the upper first half-moon groove is communicated with the oil inlet 14 to form a first oil inlet cavity 20, the lower first half-moon groove is communicated with the oil outlet 15 to form a first oil outlet cavity 21, and a first radial oil inlet channel 22 communicated with the axial oil inlet channels 18 is radially arranged on the axial oil inlet channels 18; the oil outlet channel 19 comprises three axial oil outlet channels 19 which are arranged in parallel in the axial direction inside the flow distribution shaft 2, a first radial oil outlet channel 23 communicated with the axial oil outlet channel 19 is arranged on the axial oil outlet channel 19 in the radial direction, the axial oil inlet channel 18 is sequentially communicated with a first oil inlet cavity 20 and a first oil outlet cavity 21 through the first radial oil inlet channel 22 by the rotation of the flow distribution shaft 2, and the axial oil outlet channel 19 is sequentially communicated with the first oil outlet cavity 21 and the first oil inlet cavity 20 through the first radial oil outlet channel 23, so that oil inlet and oil outlet of the motor are realized.
A pair of second half moon grooves are arranged on the surface of the oil through disc 1 close to the valve shaft 2 and corresponding to the five first oil through channels 16, the upper second half moon groove is communicated with three first oil through channels 16 to form a second oil inlet cavity 24, the lower second half moon groove is communicated with the remaining two first oil through channels 16 to form a second oil outlet cavity 25, the axial oil inlet channel 18 is radially provided with a second radial oil inlet channel 26 communicated with the axial oil inlet channel 18, the axial oil outlet channel 19 is radially provided with a second radial oil outlet channel 27 communicated with the axial oil outlet channel 19, the axial oil inlet channel 18 is sequentially communicated with a second oil inlet cavity 24 and a second oil outlet cavity 25 through the second radial oil inlet channel 26 by the rotation of the flow distribution shaft 2, and the axial oil outlet channel 19 is sequentially communicated with the second oil outlet cavity 25 and the second oil inlet cavity 24 through the second radial oil outlet channel 27, so that oil inlet and oil outlet of the left tilt cylinder 9 are realized.
The oil through disc 1 is provided with a pair of third half moon grooves at positions corresponding to the five second oil passages 17 and close to the surface of the oil distribution shaft 2, the upper third half moon groove is communicated with the three second oil passages 17 to form a third oil inlet cavity 28, the lower second oil passages 17 of the two third half moon grooves form a third oil outlet cavity 29, the axial oil inlet channel 18 is radially provided with a third radial oil inlet channel 30 communicated with the axial oil inlet channel 18, the axial oil outlet channel 19 is radially provided with a third radial oil outlet channel 31 communicated with the axial oil outlet channel 19, the oil distribution shaft 2 rotates to enable the axial oil inlet channel 18 to be sequentially communicated with the third oil inlet cavity 28 and the third oil outlet cavity 29 through the third radial oil inlet channel 30, and the axial oil outlet channel 19 is sequentially communicated with the third oil outlet cavity 29 and the third oil inlet cavity 28 through the third radial oil outlet channel 31, so as to realize oil inlet and oil outlet of the right tilt cylinder 9.
High-pressure oil acts on each plunger 8 from the first oil passage 16 and the second oil passage 17 through the floating sleeve 6 and the hole oil passage of the tilt cylinder 9, and the plungers 8 drive the crankshaft 11 to rotate; the rotation of the crankshaft 11 drives the port shaft 2 to rotate synchronously, and the rotation of the port shaft 2 realizes that high-pressure oil alternately flows through the first oil passage 16 and the second oil passage 17, so that the rotation of the motor and the output of torque are realized.
Two ends of the flow distribution shaft 2 are supported in a shaft hole of the oil through disc 1 through bearings 5, one end of the crankshaft 11 is supported in the shell 7 through a bearing, the other end of the crankshaft is supported in the oil through disc 1 through a bearing, and the shell 7 is connected with the oil through disc 1 through bolts.
The utility model adopts an oil inlet 14 and an oil outlet 15 to realize the flow distribution of the left side and the right side through a middle rotary flow distribution shaft 2, and then realizes the double-shaft torque output of the two sides through a mode that a radial plunger 8 pushes an eccentric crankshaft 11; the flow distribution shaft 2 adopts a left bearing and a right bearing to support and ensure the rotation stability of the flow distribution shaft; the radial oil ports of the valve shaft 2 are sealed by high-pressure rotary sealing rings, so that independent oil passing among oil passages is ensured; the left crankshaft 11 and the right crankshaft 11 are connected with the port shaft 2 through a double-headed key 13 to ensure the synchronism of left and right output; the utility model has the advantages of reliable performance, convenient maintenance, low cost, etc.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. A hydraulic motor with double-shaft output is characterized by comprising an oil through disc and shells symmetrically spliced on the left side and the right side of the oil through disc, wherein a rotatable flow distribution shaft is arranged in a shaft hole of the oil through disc, a crankshaft is transversely arranged at the center of each shell, one end of the crankshaft extends out of the shells to form an output shaft, and the other end of the crankshaft is axially connected with the flow distribution shaft; a tilt cylinder is arranged in the shell, a bearing sleeve is sleeved at the eccentric position of the crankshaft, and odd plungers are arranged in the tilt cylinder around the bearing sleeve; an oil inlet and an oil outlet are arranged on the side wall of the oil through disc side by side, a first oil through passage communicated with each plunger on the left side and a second oil through passage communicated with each plunger on the right side are arranged in the oil through disc, an oil inlet passage communicated with the oil inlet, the first oil through passage and the second oil through passage, and an oil outlet passage communicated with the oil outlet, the first oil through passage and the second oil through passage are arranged in the flow distribution shaft; after entering through the oil inlet, high-pressure oil enters the left tilt cylinder through the oil inlet channel and the first oil passage in sequence and acts on the left plunger to drive the left crankshaft to rotate; high-pressure oil enters the right tilt cylinder through the oil inlet channel and the second oil channel and acts on the right plunger piston to drive the right crankshaft to rotate; the rotation of the crankshaft further drives the valve shafts to synchronously rotate, and the rotation of the valve shafts realizes that high-pressure oil alternately flows through the first oil passage and the second oil passage which are communicated with each plunger, so that the rotation and torque output of output shafts on two sides of the motor are realized.
2. The hydraulic motor with double-shaft output according to claim 1, wherein the number of the first oil passage and the second oil passage is respectively matched with the number of the plungers on the left side and the right side, the first oil passage is uniformly distributed on the side wall of the left part of the oil through disc in the radial direction, and the second oil passage is uniformly distributed on the side wall of the right side of the oil through disc in the radial direction.
3. The hydraulic motor with double-shaft output according to claim 2, wherein the oil inlet channel comprises a plurality of axial oil inlet channels which are axially arranged inside the flow distribution shaft in parallel, and the oil outlet channel comprises a plurality of axial oil outlet channels which are axially arranged inside the flow distribution shaft in parallel; the oil distribution plate is provided with a first oil inlet cavity at a position corresponding to an oil inlet and a first oil outlet cavity at a position corresponding to an oil outlet, the surface of the oil distribution plate close to the flow distribution shaft is provided with a first radial oil inlet channel communicated with the oil inlet along the radial direction, the axial oil outlet channel is provided with a first radial oil outlet channel communicated with the axial oil inlet channel along the radial direction, and the flow distribution shaft rotates to enable the axial oil inlet channel to be sequentially communicated with the first oil inlet cavity and the first oil outlet cavity through the first radial oil inlet channel and enable the axial oil outlet channel to be sequentially communicated with the first oil outlet cavity and the first oil inlet cavity through the first radial oil outlet channel; the surface of the oil through disc, which is close to the oil distribution shaft, is provided with a second oil inlet cavity and a first oil outlet cavity which are communicated with the first oil through channel, the number of the first oil through channels communicated with the second oil inlet cavity is more than that of the first oil outlet cavity, the axial oil inlet channel is radially provided with a second radial oil inlet channel communicated with the axial oil inlet channel, the axial oil outlet channel is radially provided with a second radial oil outlet channel communicated with the axial oil outlet channel, and the oil distribution shaft rotates to enable the axial oil inlet channel to be sequentially communicated with the second oil inlet cavity and the second oil outlet cavity through the second radial oil inlet channel and enable the axial oil outlet channel to be sequentially communicated with the second oil outlet cavity and the second oil inlet cavity through the second radial oil outlet channel; the oil distribution plate is characterized in that a third oil inlet cavity and a third oil outlet cavity which are communicated with a second oil passage are formed in the surface, close to the oil distribution shaft, of the oil distribution plate, the number of the second oil passages communicated with the third oil inlet cavity is more than that of the third oil outlet cavity, a third radial oil inlet channel communicated with the axial oil inlet channel is radially arranged on the axial oil inlet channel, a third radial oil outlet channel communicated with the axial oil outlet channel is radially arranged on the axial oil outlet channel, and the oil distribution shaft rotates to enable the axial oil inlet channel to be sequentially communicated with the third oil inlet cavity and the third oil outlet cavity through the third radial oil inlet channel and enable the axial oil outlet channel to be sequentially communicated with the third oil outlet cavity and the third oil inlet cavity through the third.
4. The hydraulic motor with double shaft output according to claim 1, wherein the first oil passage and the second oil passage are connected with a hole oil passage of a tilt cylinder through a floating sleeve and act on each plunger.
5. A twin-shaft output hydraulic motor as defined in claim 1, wherein both ends of said port shaft are supported in shaft holes of said oil feed plate by bearings, and both end surfaces of said port shaft are axially connected to left and right crankshafts by double-headed keys.
6. The hydraulic motor with double shaft output according to claim 1, wherein one end of the crankshaft is supported in a housing through a bearing, the other end of the crankshaft is supported in an oil through disc through a bearing, and the housing and the oil through disc are connected through a bolt.
7. The hydraulic motor with double shaft output according to claim 3, wherein the two sides of each radial oil passage of the port shaft are respectively provided with a high-pressure rotary sealing ring to realize radial sealing.
8. A dual shaft output hydraulic motor as in claim 1, wherein the plunger is cambered with respect to the bearing housing, and the bearing housing is provided with a roller with respect to the crankshaft eccentricity.
9. A twin-shaft output hydraulic motor as defined in claim 1, wherein 5 plungers are provided in the right and left tilt cylinders, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021735397.6U CN212985443U (en) | 2020-08-19 | 2020-08-19 | Hydraulic motor with double-shaft output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021735397.6U CN212985443U (en) | 2020-08-19 | 2020-08-19 | Hydraulic motor with double-shaft output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212985443U true CN212985443U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021735397.6U Active CN212985443U (en) | 2020-08-19 | 2020-08-19 | Hydraulic motor with double-shaft output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212985443U (en) |
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2020
- 2020-08-19 CN CN202021735397.6U patent/CN212985443U/en active Active
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