CN214742415U - Hydraulic synchronous power device and hydraulic transmission system - Google Patents
Hydraulic synchronous power device and hydraulic transmission system Download PDFInfo
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- CN214742415U CN214742415U CN202121315355.1U CN202121315355U CN214742415U CN 214742415 U CN214742415 U CN 214742415U CN 202121315355 U CN202121315355 U CN 202121315355U CN 214742415 U CN214742415 U CN 214742415U
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Abstract
The utility model discloses a hydraulic pressure synchronous power device and hydraulic transmission system, include: the output shafts of the two hydraulic motors are arranged in a collinear way and are connected; and the shells of the two hydraulic motors are respectively and fixedly arranged on the supporting device. The output shafts of the two hydraulic motors are connected in series, and the synchronous rotation of the two hydraulic motors is ensured by utilizing a mechanical structure interconnection mode; and through all setting firmly two hydraulic motor on strutting arrangement, utilize strutting arrangement to play the effect of steady support to two hydraulic motor, compare in prior art and utilize the supporting seat to come to rotate the mode that supports to the spline shaft, the utility model provides a hydraulic pressure synchronous power device has more stable support to can ensure two hydraulic motor synchronous motion's stability, and then can improve this hydraulic pressure synchronous power device's synchronous precision, avoid leading to the synchronous precision low because of executive component's load pressure differs greatly.
Description
Technical Field
The utility model relates to a hydraulic transmission equipment technical field, more specifically say, relate to a hydraulic pressure synchronous power device. Furthermore, the utility model discloses still relate to a hydraulic transmission system including above-mentioned hydraulic pressure synchronous power device.
Background
The hydraulic transmission system has the advantages of high power density and stable working state, so in the technical fields of engineering machinery, construction machinery, agricultural machinery, metallurgical machinery and the like, the hydraulic transmission system is usually adopted to drive the execution elements to act, and with the continuous improvement of the functions of mechanical equipment, the requirement for synchronous motion of multiple execution elements is more and more increased, and therefore, the multiple execution elements need to be synchronously controlled.
In the prior art, a hydraulic synchronous circuit for realizing synchronous action of multiple execution elements generally comprises a throttling synchronous circuit and a volume synchronous circuit, wherein the throttling synchronous circuit adopts a flow-collecting and flow-dividing valve or a balance valve and the like to realize the synchronization of the multiple execution elements, the precision is low, and the synchronization precision is generally 2% -5%; the positive displacement synchronous loop can adopt a synchronous oil cylinder, a synchronous motor, a synchronous pump and the like, and the precision is relatively high and can reach 1% -3%.
However, the positive displacement synchronous circuits of the prior art include synchronous power devices, such as synchronous motors, which typically connect the output shafts of two motors via a splined shaft that is rotatably supported on a support.
Obviously, the synchronous motor with the structure has poor supporting effect, and when the load pressure difference of the actuating element is large, the synchronous precision is low, and the synchronous precision can be even reduced to 10% -15%, so that the requirement of a high-pressure-difference synchronous circuit cannot be met.
In summary, those skilled in the art need to solve the above problems and provide a hydraulic synchronous power device to improve the stable support and avoid the low synchronization accuracy caused by the large load pressure difference of the actuator.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a hydraulic synchronous power device, which has better stable support and high synchronous precision.
Another object of the present invention is to provide a hydraulic transmission system including the above hydraulic synchronous power device, which has high synchronization precision.
In order to achieve the above object, the present invention provides the following technical solutions:
a hydraulic synchronous power plant comprising:
the output shafts of the two hydraulic motors are arranged in a collinear way and are connected;
and the shells of the two hydraulic motors are fixedly arranged on the supporting device respectively.
Preferably, the supporting device comprises a connecting body with two open ends and a hollow interior, and the two hydraulic motors are fixedly arranged at two ends of the connecting body.
Preferably, the two ends of the connecting body are respectively provided with an inner cylindrical surface for positioning, and the inner cylindrical surface is matched and positioned with an outer cylindrical spigot of the hydraulic motor.
Preferably, a retaining shoulder is arranged inside the connecting body, the retaining shoulder is radially and inwardly protruded inside the connecting body, and the retaining shoulder is used for axially limiting the two hydraulic motors respectively.
Preferably, the supporting device further comprises a supporting frame fixedly connected with the connecting body, and the supporting frame is used for being installed on the machine equipment.
Preferably, the support frame comprises a first support frame and a second support frame, and the connecting body is respectively sleeved with the first support frame and the second support frame.
Preferably, the outer peripheral surface of the connecting body is provided with a radially outward protruding limiting part which is respectively limited with the side surface stops of the first support frame and the second support frame.
Preferably, the output shafts of the two hydraulic motors are connected through a coupling, a flat key sleeve, a spline sleeve or a spline shaft.
Preferably, the hydraulic motor comprises a swash-shaft plunger motor, a swash-plate plunger motor, a radial plunger motor, a gear motor or a vane motor.
A hydraulic transmission system comprises a hydraulic synchronous power device, wherein the hydraulic synchronous power device is any one of the hydraulic synchronous power devices.
The utility model provides a hydraulic synchronous power device, because the output shafts of two hydraulic motors are arranged collinearly and connected, that is, the output shafts of two hydraulic motors are connected in series, therefore, the synchronous rotation of two hydraulic motors is ensured by using the mode of mechanical structure interconnection; and through setting firmly two hydraulic motor on strutting arrangement, utilize strutting arrangement to play the effect of steady support to two hydraulic motor, compare in prior art and utilize the supporting seat to come to rotate the mode that supports to the spline shaft, the utility model provides a hydraulic pressure synchronous power device has more stable support to can ensure two hydraulic motor synchronous motion's stability, and then can improve this hydraulic pressure synchronous power device's synchronous precision, avoid leading to the synchronous precision low because of executive component's load pressure differs greatly.
The utility model provides a hydraulic transmission system, including above-mentioned hydraulic pressure synchronous power device, have foretell beneficial effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hydraulic synchronous power device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hydraulic synchronous power device according to a second embodiment of the present invention.
The reference numerals in fig. 1 and 2 are as follows:
1 is a hydraulic motor, 2 is a connecting body, 21 is an inner cylindrical surface for positioning, 211 is an inner cylindrical surface for first positioning, 212 is an inner cylindrical surface for second positioning, 22 is a retaining shoulder, 23 is a limiting part, 31 is a first supporting frame, 32 is a second supporting frame, 4 is a coupling, 5 is a first fastening piece, and 6 is a second fastening piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The core of the utility model is to provide a hydraulic pressure synchronous power device, it has better stable support nature, and synchronous precision is high. The other core of the utility model is to provide a hydraulic transmission system comprising the hydraulic synchronous power device, which has high synchronous precision.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a hydraulic synchronous power device according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a hydraulic synchronous power device according to a second embodiment of the present invention.
The utility model provides a hydraulic synchronous power device, including strutting arrangement and two hydraulic motor 1.
In particular, the support device mainly plays a bearing role to fix and support the two hydraulic motors 1. That is, the housings of the two hydraulic motors 1 are respectively fixedly mounted on the support device. Meanwhile, it is necessary to ensure that the output shafts of the two hydraulic motors 1 are arranged in a collinear manner and the output shafts of the two hydraulic motors 1 are connected.
That is, the output shafts of the two hydraulic motors 1 are connected in series, and the synchronous rotation of the two hydraulic motors 1 is ensured by using a mechanical structure interconnection mode; and through setting firmly two hydraulic motor 1 on strutting arrangement, utilize strutting arrangement to play the effect of steady support to two hydraulic motor 1, compare in prior art and utilize the supporting seat to come to rotate the mode that supports to the spline shaft, the utility model provides a hydraulic pressure synchronous power device has more stable support to can ensure two hydraulic motor 1 simultaneous movement's stability, and then can improve this hydraulic pressure synchronous power device's synchronous precision, avoid leading to the synchronous precision low because of the load pressure difference of execute component is great.
It should be noted that the specific structure of the supporting device is not limited in this embodiment, as long as the supporting device can simultaneously support two hydraulic motors 1 and can stably support the two hydraulic motors 1.
Considering a specific implementation manner of the supporting device, as a preferable solution, on the basis of the above embodiment, the supporting device includes a connecting body 2, both ends of the connecting body 2 are open and the interior is hollow, and two hydraulic motors 1 are fixedly arranged at both ends of the connecting body 2.
That is to say, two hydraulic motor 1 are installed respectively in two openings departments of connecting body 2, because the inside cavity of connecting body 2, consequently can hold the output shaft of two hydraulic motor 1 to realize the butt joint of the output shaft of two hydraulic motor 1.
It can be seen that the structure of the connecting body 2 is simple, which facilitates the installation of the hydraulic motor 1.
In order to realize the radial limit of the two hydraulic motors 1 and ensure that the output shafts of the two hydraulic motors 1 can be accurately aligned, on the basis of the above embodiment, the two ends of the connecting body 2 are respectively provided with an inner cylindrical surface 21 for positioning, which is used for positioning the outer cylindrical spigot of the hydraulic motor 1.
That is to say, during the installation, hydraulic motor 1's excircle tang is inserted and is located location in with inner cylinder face 21, and both cooperations to play radial spacing effect to hydraulic motor 1, thereby ensure that two hydraulic motor 1 all have suitable radial position, thereby make two hydraulic motor 1's output shaft can the accurate alignment, promote the axiality precision of two hydraulic motor 1 output shafts.
In order to better perform radial position limitation on the hydraulic motor 1, as a preferable scheme, on the basis of the above embodiment, the number of the positioning inner cylindrical surfaces 21 is at least two, and more than two positioning inner cylindrical surfaces 21 may form a stepped hole structure form so as to perform radial position limitation on a plurality of outer circular surfaces of the hydraulic motor 1 simultaneously.
Preferably, as shown in fig. 1, the number of the positioning inner cylindrical surfaces 21 is two, and the first positioning inner cylindrical surface 211 and the second positioning inner cylindrical surface 212 are formed with stepped holes.
Further, in consideration of the problem of axial position limitation of the two hydraulic motors 1, on the basis of the above embodiment, the inside of the connecting body 2 is provided with the retaining shoulder 22, and the retaining shoulder 22 is radially inward protruded to the inside of the connecting body 2 for respectively axially limiting the two hydraulic motors 1.
That is, the present embodiment utilizes the retaining shoulder 22 to axially limit the position of the hydraulic motor 1, so as to ensure that the two hydraulic motors 1 have proper axial positions to facilitate the connection of the output shafts of the two hydraulic motors 1.
It should be noted that a shoulder 22 may be disposed inside the connecting body 2, and two end faces of the shoulder 22 are used to axially limit the two hydraulic motors 1 respectively; two retaining shoulders 22 may be disposed inside the connecting body 2, and the two hydraulic motors 1 may be correspondingly limited by the two retaining shoulders 22.
The specific structure of the retaining shoulder 22 is not limited in this embodiment, for example, the retaining shoulder 22 may be an integral internal circular ring structure, or may be a plurality of stop structures arranged in a common circle.
Of course, the person skilled in the art can also use the end faces at the two ends of the connecting body 2 to respectively perform the axial limiting function on the two hydraulic motors 1.
In view of the convenience of mounting the hydraulic synchronous power device on the machine equipment, on the basis of the above embodiment, the support device further comprises a support frame fixedly connected with the connecting body 2, and the support frame is used for being mounted on the machine equipment.
That is to say, the present embodiment realizes the fixation of the hydraulic synchronous power device on the machine equipment by providing the support frame to mount the entire hydraulic synchronous power device on the machine equipment by using the support frame.
In the present embodiment, the specific connection mode of the support frame and the connector 2 is not limited, as long as the support frame and the connector can be connected.
As a preferable scheme, on the basis of the above embodiment, the supporting frame includes a first supporting frame 31 and a second supporting frame 32, and the connecting body 2 is respectively sleeved with the first supporting frame 31 and the second supporting frame 32.
It should be noted that the first support frame 31 and the second support frame 32 are disposed at an interval, and the connecting body 2 is connected between the first support frame 31 and the second support frame 32, so as to support the connecting body 2 at two points through the first support frame 31 and the second support frame 32.
Specifically, the first support frame 31 and the second support frame 32 are respectively provided with a mounting hole, and the outer peripheral surfaces of the two ends of the connecting body 2 are respectively sleeved in the mounting holes of the first support frame 31 and the second support frame 32, so that the connecting body 2 is connected with the support frames.
Further, in consideration of the axial position limitation problem when the connecting body 2 is respectively sleeved with the first support frame 31 and the second support frame 32, on the basis of the above embodiment, the outer circumferential surface of the connecting body 2 is provided with the position limitation portion 23 which radially protrudes out of the outer circumferential surface of the connecting body 2, and the position limitation portion 23 is used for respectively stopping and limiting with the side surfaces of the first support frame 31 and the second support frame 32.
That is, in the present embodiment, the limit parts 23 are respectively matched with the side surfaces of the first support frame 31 and the second support frame 32, so as to realize the axial limit of the connecting body 2 on the first support frame 31 and the second support frame 32.
In consideration of the stability of the connection body 2 to the support frame, it is preferable that the connection body 2 is fixed to the first support frame 31 and the second support frame 32 by the second fastening member 6 after the connection body 2 is sleeved on the first support frame 31 and the second support frame 32, respectively.
Preferably, the limiting part 23 is fixed with the first support frame 31 and the second support frame 32 by the second fastener 6.
The present embodiment does not limit the specific structure of the second fastening member 6, and for example, the second fastening member 6 may be a screw or the like.
In each of the above embodiments, the present invention does not limit the fixing manner of the two hydraulic motors 1 and the supporting device, and preferably, the housings of the two hydraulic motors 1 are fixedly mounted on the supporting device through the first fastening members 5, respectively.
It should be noted that, in the present embodiment, the specific structure of the first fastening member 5 is not limited, and preferably, the first fastening member 5 is a screw or the like.
In addition, in each of the above embodiments, the specific connection mode of the output shafts of the two hydraulic motors 1 is not limited, and the output shafts of the two hydraulic motors 1 may be directly connected, or may be connected by a coupling 4, a flat key sleeve, a spline sleeve, or a spline shaft.
Preferably, the coupling 4 is an elastic coupling 4.
Further, when the output shafts of the two hydraulic motors 1 are connected by a flat key sleeve, a spline sleeve or a spline shaft, it is preferable that a preset gap is provided between the output shafts of the two hydraulic motors 1 to prevent the output shafts of the two hydraulic motors 1 from abutting against each other and generating an axial force on each other.
In addition, in each of the above embodiments, the present invention does not limit the specific type of the hydraulic motor 1, and for example, it is preferable that the hydraulic motor 1 includes a swash-shaft type plunger motor, a swash-plate type plunger motor, a radial plunger motor, a gear motor, or a vane motor on the basis of the above embodiments.
That is, the structure of the hydraulic synchronous power unit is not limited to the hydraulic motor 1, and is applicable to various types of hydraulic motors 1.
As shown in fig. 1, a structure of an installed oblique axis type motor is provided; and fig. 2 shows a structure of the swash plate type motor after installation.
Therefore, the hydraulic synchronous power device provided by the utility model can solve the problem of low synchronous precision caused by large load pressure difference of the executing element, and improve the synchronous precision of the system; the connector 2 and the support frame are simple in structure, convenient to install, high in universality and capable of being widely popularized and applied.
In addition to the above-mentioned hydraulic synchronous power device, the present invention further provides a hydraulic transmission system including the hydraulic synchronous power device disclosed in the above-mentioned embodiments, and the structure of other parts of the hydraulic transmission system refers to the prior art, which is not repeated herein.
It should be noted that, the specific structure of the hydraulic transmission system is not limited in this embodiment, for example, the hydraulic transmission system may be a hydraulic transmission system of an engineering machine, a hydraulic transmission system of a construction machine, a hydraulic transmission system of an agricultural machine, a hydraulic transmission system of a metallurgical machine, and the like.
The hydraulic synchronous power device disclosed by any one of the embodiments is adopted in the hydraulic transmission system, and the synchronization precision is high.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above that the utility model provides a hydraulic pressure synchronous power device and hydraulic transmission system have carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A hydraulic synchronous power plant, comprising:
the output shafts of the two hydraulic motors (1) are arranged in a collinear way and are connected;
and the shells of the two hydraulic motors (1) are fixedly arranged on the supporting device respectively.
2. The hydraulic synchronous power unit according to claim 1, characterized in that the support means comprises a connecting body (2) open at both ends and hollow inside, and the two hydraulic motors (1) are fixedly arranged at both ends of the connecting body (2).
3. The hydraulic synchronous power device according to claim 2, characterized in that the two ends of the connecting body (2) are respectively provided with an inner cylindrical surface (21) for positioning, which is matched and positioned with an outer cylindrical spigot of the hydraulic motor (1).
4. The hydraulic synchronous power unit according to claim 2, characterized in that the connecting body (2) is provided inside with a stop shoulder (22) which projects radially inwards of the connecting body (2), said stop shoulder (22) axially limiting the two hydraulic motors (1) respectively.
5. The hydraulic synchronous power unit according to claim 2, characterized in that the support device further comprises a support frame fixedly connected with the connecting body (2), the support frame being intended to be mounted on a machine.
6. The hydraulic synchronous power unit according to claim 5, characterized in that the support frame comprises a first support frame (31) and a second support frame (32), and the connecting body (2) is sleeved with the first support frame (31) and the second support frame (32), respectively.
7. The hydraulic synchronous power device according to claim 6, wherein the outer peripheral surface of the connecting body (2) is provided with radially outward protruding limiting parts (23) which respectively stop and limit the side surfaces of the first support frame (31) and the second support frame (32).
8. Hydraulic synchronous power unit according to any of claims 1-7, characterized in that the output shafts of the two hydraulic motors (1) are connected by means of a coupling (4), a flat key sleeve, a splined sleeve or a splined shaft.
9. The hydraulic synchronous power unit according to any of claims 1-7, characterized in that the hydraulic motor (1) comprises a swash-shaft plunger motor, a swash-plate plunger motor, a radial plunger motor, a gear motor or a vane motor.
10. A hydraulic transmission system comprising a hydraulic synchronous power plant, characterized in that the hydraulic synchronous power plant is a hydraulic synchronous power plant according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121315355.1U CN214742415U (en) | 2021-06-11 | 2021-06-11 | Hydraulic synchronous power device and hydraulic transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121315355.1U CN214742415U (en) | 2021-06-11 | 2021-06-11 | Hydraulic synchronous power device and hydraulic transmission system |
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| Publication Number | Publication Date |
|---|---|
| CN214742415U true CN214742415U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121315355.1U Active CN214742415U (en) | 2021-06-11 | 2021-06-11 | Hydraulic synchronous power device and hydraulic transmission system |
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| CN (1) | CN214742415U (en) |
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- 2021-06-11 CN CN202121315355.1U patent/CN214742415U/en active Active
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