CN212479771U - Hydraulic power unit - Google Patents
Hydraulic power unit Download PDFInfo
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- CN212479771U CN212479771U CN202020584033.6U CN202020584033U CN212479771U CN 212479771 U CN212479771 U CN 212479771U CN 202020584033 U CN202020584033 U CN 202020584033U CN 212479771 U CN212479771 U CN 212479771U
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- hydraulic pump
- hydraulic
- power unit
- pump
- hydraulic power
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Abstract
The utility model provides a hydraulic power unit relates to hydraulic system technical field, and this hydraulic power unit includes: the device comprises a shell, a power source, a hydraulic pump, a coupler and a connecting piece; wherein, the power source is provided with a driving shaft; the hydraulic pump is provided with a pump shaft; the coupling is used for connecting the driving shaft and the pump shaft; the connecting piece is fixedly arranged on the hydraulic pump, and a plurality of connecting branch parts used for being connected with the shell are uniformly arranged along the rotating circumferential direction of the hydraulic pump. In above scheme, the hydraulic pump passes through the connecting piece and is connected to on the casing, and the connecting piece rotates the circumference along the hydraulic pump and evenly is provided with a plurality of branch of being used for being connected with the casing, but the branch of being connected portion receives power mutual equilibrium to avoided the hydraulic pump to receive the radial force that comes from adapting unit when rotating, therefore the operation of hydraulic pump is more stable.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to a hydraulic power unit.
Background
The hydraulic power unit is used as a power source of a hydraulic tool and used for sending media meeting the requirement of flow and pressure to a hydraulic system. Generally, some hydraulic power units include a motor and a hydraulic pump, wherein the motor is used for driving the hydraulic pump to suck oil from a hydraulic oil tank, and form a pressure oil discharge to an actuator.
In some existing hydraulic power units, a hydraulic pump needs to be fixed on a casing, and the hydraulic pump can be subjected to radial force from a connecting part when rotating, and the radial force can destroy the running stability of the hydraulic pump. For example, chinese patent 201480046563.2 discloses a hydraulic power unit in which a hydraulic pump is mounted to a housing by a connecting member that is connected to the housing on only one side, and the pump shaft is still subjected to radial forces during rotation, thereby affecting the smoothness of the operation of the hydraulic pump.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will solve lies in, to the above-mentioned not enough of prior art, proposes a hydraulic power unit, and this hydraulic power unit can avoid the hydraulic pump can receive the radial force from adapting unit when rotating in order to improve operating stability.
The hydraulic power unit includes:
a housing;
a power source having a drive shaft;
a hydraulic pump having a pump shaft;
a coupling for connecting the drive shaft and the pump shaft;
and the connecting piece is fixedly arranged on the hydraulic pump and is uniformly provided with a plurality of connecting branch parts used for being connected with the shell along the rotating circumferential direction of the hydraulic pump.
Further, the connecting piece has two symmetrically arranged connecting branches.
Further, the connecting piece is provided with a plate-shaped main body part; the two connecting branch parts are respectively arranged at two ends of the main body part; the main body part is fixed on the end face of the hydraulic pump at one side of the power source, and a yielding groove capable of containing the pump shaft is formed in the main body part.
Furthermore, the main body part and the hydraulic pump are connected through threads.
Further, the connection branch portion is plate-shaped and perpendicular to the main body portion.
Furthermore, the connecting branch part and the shell are connected by bolts.
Furthermore, an elastic component is padded between the connecting branch part and the shell.
Further, the elastic member is a spring.
Further, the elastic component is a rubber sleeve.
Further, the hydraulic power unit also comprises a cooling fan; the heat radiation fan is fixed on the pump shaft, the driving shaft or the coupling.
In above scheme, the hydraulic pump passes through the connecting piece and is connected to on the casing, and the connecting piece rotates the circumference along the hydraulic pump and evenly is provided with a plurality of branch of being used for being connected with the casing, and each branch of being connected receives power can be balanced each other to avoided the hydraulic pump to receive the radial force that comes from adapting unit when rotating, therefore the operation of hydraulic pump is more stable.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic power unit in an embodiment of the present application.
Fig. 2 is another schematic structural diagram of a hydraulic power unit in the embodiment of the present application.
Fig. 3 is a schematic structural diagram of a hydraulic pump and a connecting member in an embodiment of the present application.
Detailed Description
The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Referring to fig. 1 and 2, an embodiment of the present application provides a hydraulic power unit, including: a casing 50, a power source 10, a hydraulic pump 20, a coupler 30 and a connecting piece 40; wherein, the power source 10 has a driving shaft 11; the hydraulic pump 20 has a pump shaft 21; the coupling 30 is used for connecting the drive shaft 11 and the pump shaft 21; the connecting member 40 is fixedly disposed on the hydraulic pump 20, and a plurality of connecting branch portions 41 for connecting with the housing 50 are uniformly disposed along a circumferential direction in which the hydraulic pump 20 rotates. The driving shaft 11 of the power source 10 is connected to the pump shaft 21 through the coupling 30 to drive the hydraulic pump 20 to operate. The power source 10 may specifically be an internal combustion engine or an electric motor.
The pump shaft 21 of the hydraulic pump 20 and the driving shaft 11 of the power source 10 need to maintain a certain coaxiality during transmission, and in some existing hydraulic power units, the hydraulic pump is directly fixed on the casing, and in such existing solutions, the hydraulic pump 20 is fixed on the casing through a connecting part, and the connecting part is connected with the casing only at one position on one side, so that the hydraulic pump can bear a radial force during rotation, and the operation of the hydraulic pump is not smooth enough. In the solution proposed in the embodiment of the present application, the connecting element 40 is fixedly disposed on the hydraulic pump 20, and a plurality of connecting branch portions 41 for connecting with the housing 50 are uniformly disposed along the rotation circumferential direction of the hydraulic pump 20. The forces experienced by the connecting limbs are balanced so that the connecting member as a whole does not apply radial forces to the hydraulic pump 20 and is more stable in operation, which places less demands on the mechanical properties of other load bearing components.
In some embodiments, the connecting member 40 has two symmetrically disposed connecting branches 41. Compared with the scheme of arranging three or more connecting branch parts 41, the structure is simpler and more compact by only arranging two connecting branch parts 41, and the requirements on manufacturing and installation are lower.
With further reference to fig. 3, the connector 40 has a plate-like body portion 42; the two connecting branch parts 41 are respectively arranged at two ends of the main body part 42; the main body 42 is fixed to an end surface of the hydraulic pump 20 on the side of the power source 10, and has a relief groove 421 for receiving the pump shaft 21. The body 42 is snapped from one side during installation, so that the pump shaft 21 enters the relief groove 421, and then the body 42 can be fixed to the end surface of the hydraulic pump 20 by a fastener.
In some embodiments, a threaded connection is used between the main body portion 42 and the hydraulic pump 20. Specifically, at least two threaded holes are arranged on the end surface of the hydraulic pump 20; the main body 42 is provided with a connection hole at a corresponding position, and a screw is inserted through the connection hole in the main body 42 and engaged with a thread on the end surface of the hydraulic pump 20, thereby fixing the connection member 40 to the end surface of the hydraulic pump 20.
In some embodiments, the connecting branch portion 41 is plate-shaped and perpendicular to the main body portion 42. The connecting branch portion 41 may be formed by bending. Since the main body portion 42 and the connecting branch portion 41 are both plate-shaped, the entire connecting branch portion 41 can be formed by machining a steel plate.
In some embodiments, the connecting branch 41 and the casing 50 are connected by bolts.
Further, an elastic member 60 is padded between the connection branch portion 41 and the housing 50. The elastic member 60 allows the hydraulic pump 20 to be elastically mounted, allows a certain amount of radial displacement of the pump shaft 21, and generates a restoring force opposite to the displacement direction to restore the pump shaft 21 to its original position. The resilient mounting employed in the embodiments of the present application places lower demands on the coaxiality between the drive shaft 11 and the pump shaft 21 than a rigid connection. In addition, due to the fact that the coaxiality requirement is low, the corresponding installation requirement is correspondingly reduced, and the installation is easier.
It should be noted that the elastic member 60 is made of an elastic material and can provide a corresponding restoring force when deformed. The elastic member 60 may be fitted around the stud for connection.
In some embodiments, the resilient member 60 is a spring.
In some embodiments, the elastic member 60 is a rubber sleeve.
Further, the hydraulic power unit further includes a radiator fan 70; the heat dissipation fan 70 is fixed to the pump shaft 21, the drive shaft 11, or the coupling 30. The heat dissipation fan 70 is used to generate an air flow during rotation to dissipate heat, and is rotatable together with the pump shaft 21, the drive shaft 11, or the coupling 30. The heat radiation fan 70 is fixed on the rotating parts, other transmission parts are not needed, and the structure is simple and compact.
The hydraulic power unit provided by the embodiment of the application can avoid the hydraulic pump from receiving radial force from the connecting part when rotating, and the operation is more stable.
The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.
Claims (10)
1. A hydraulic power unit, comprising:
a housing (50);
a power source (10) having a drive shaft (11);
a hydraulic pump (20) having a pump shaft (21);
a coupling (30) for connecting the drive shaft (11) and the pump shaft (21);
and the connecting piece (40) is fixedly arranged on the hydraulic pump (20) and is uniformly provided with a plurality of connecting branch parts (41) used for being connected with the machine shell (50) along the rotating circumferential direction of the hydraulic pump (20).
2. A hydraulic power unit according to claim 1, characterised in that the connecting piece (40) has two symmetrically arranged connecting branches (41).
3. A hydraulic power unit as claimed in claim 1, characterized in that the connecting member (40) has a plate-like main body portion (42); the two connecting branch parts (41) are respectively arranged at two ends of the main body part (42); the main body part (42) is fixed on the end face of the hydraulic pump (20) on one side of the power source (10), and a yielding groove (421) capable of containing the pump shaft (21) is formed in the main body part.
4. A hydraulic power unit according to claim 3, characterized in that a threaded connection is used between the main body part (42) and the hydraulic pump (20).
5. A hydraulic power unit according to claim 3, characterized in that the connecting branch portion (41) is plate-shaped and perpendicular to the main body portion (42).
6. The hydraulic power unit as claimed in claim 1, wherein the connection leg (41) is bolted to the housing (50).
7. The hydraulic power unit as claimed in claim 6, wherein an elastic member (60) is padded between the connecting leg portion (41) and the casing (50).
8. The hydraulic power unit as recited in claim 7, characterized in that the resilient member (60) is a spring.
9. The hydraulic power unit as recited in claim 7, wherein the resilient member (60) is a rubber boot.
10. The hydraulic power unit as recited in claim 1, further comprising a heat sink fan (70); the heat radiation fan (70) is fixed on the pump shaft (21), the driving shaft (11) or the coupling (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020584033.6U CN212479771U (en) | 2020-04-17 | 2020-04-17 | Hydraulic power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020584033.6U CN212479771U (en) | 2020-04-17 | 2020-04-17 | Hydraulic power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479771U true CN212479771U (en) | 2021-02-05 |
Family
ID=74450331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020584033.6U Active CN212479771U (en) | 2020-04-17 | 2020-04-17 | Hydraulic power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479771U (en) |
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2020
- 2020-04-17 CN CN202020584033.6U patent/CN212479771U/en active Active
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