CN215828265U - Power unit oil circuit and mounting structure for small shear elevator - Google Patents
Power unit oil circuit and mounting structure for small shear elevator Download PDFInfo
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- CN215828265U CN215828265U CN202121398325.1U CN202121398325U CN215828265U CN 215828265 U CN215828265 U CN 215828265U CN 202121398325 U CN202121398325 U CN 202121398325U CN 215828265 U CN215828265 U CN 215828265U
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Abstract
The utility model relates to a power unit oil circuit and a mounting structure for a small shear elevator.A fuel tank is communicated with the input end of a double gear pump through an oil pipe, the double gear pump is provided with a first output end and a second output end, the first output end of the double gear pump is communicated with a first oil outlet through a first valve group, the second output end of the double gear pump is communicated with a second oil outlet through a second valve group, and the double gear pump is driven by a motor. The pump base is designed highly integrally and optimally, so that the pressure loss of an oil path in the pump base is small, the hydraulic oil path is designed simply and practically, two lifting speeds can be realized by adopting double gear pumps (with different discharge capacities), and the small-discharge gear pump can be used for adjusting a girder of a lifter.
Description
Technical Field
The utility model belongs to the technical field of hydraulic systems of lifts, and relates to a power unit oil circuit and a mounting structure for a small shear lift.
Background
With the development of industry, lifting equipment is applied to more and more mechanical fields. In the automotive repair and manufacturing industry, a considerable number of processes require the use of lift machines. The lifting machine is used as a steam protection device in the steam repair industry, the use frequency is higher and higher, the lifting machine cannot be used for major repair and minor repair maintenance of the whole automobile, the product property and the quality of the lifting machine can directly influence the personal safety of maintenance personnel, and the safety and the practicability of the lifting machine are more and more valued by people. The existing hydraulic power unit can only ascend at a single speed and is not suitable for a plurality of working occasions.
Disclosure of Invention
The utility model aims to provide a power unit oil way for a small shear elevator, which can solve the problem that a hydraulic power unit can only rise at a single speed.
According to the technical scheme provided by the utility model: the utility model provides a power unit oil circuit for small shear lift, the oil tank passes through oil pipe intercommunication duplicate gear pump input, and the duplicate gear pump has first output and second output, and the first output of duplicate gear pump is through the first oil-out of first valves intercommunication, and duplicate gear pump second output is through second valves intercommunication second oil-out.
As a further development of the utility model, the double gear pump is driven by an electric motor.
As a further improvement of the utility model, the first valve group comprises a first one-way valve, the input end of the first one-way valve is communicated with the first output end of the duplicate gear pump, the output end of the first one-way valve is respectively communicated with the first oil outlet and the input end of the first electromagnetic valve, and the output end of the first electromagnetic valve is communicated with the oil tank.
As a further improvement of the utility model, a first overflow valve is arranged between the first output end of the duplicate gear pump and the first one-way valve, the input end of the first overflow valve is communicated with the first output end of the duplicate gear pump, and the output end of the first overflow valve is communicated with an oil tank.
As a further improvement of the utility model, a first bidirectional check valve is arranged between the first overflow valve and the first one-way valve, the input end of the first bidirectional check valve is communicated with the output end of the first overflow valve, and the output end of the first bidirectional check valve is communicated with the oil tank.
As a further improvement of the utility model, the second valve group comprises a second one-way valve, the input end of the second one-way valve is communicated with the second output end of the duplicate gear pump, the output end of the second one-way valve is respectively communicated with the second oil outlet and the input end of the second electromagnetic valve, and the output end of the second electromagnetic valve is communicated with the oil tank.
As a further improvement of the utility model, a second overflow valve is arranged between the second output end of the duplicate gear pump and the second one-way valve, the input end of the second overflow valve is communicated with the second output end of the duplicate gear pump, and the output end of the second overflow valve is communicated with the oil tank.
As a further improvement of the utility model, a second bidirectional check valve is arranged between the second overflow valve and the second one-way valve, the input end of the second bidirectional check valve is communicated with the output end of the second overflow valve, and the output end of the second bidirectional check valve is communicated with the oil tank.
As a further improvement of the utility model, an oil absorption filter is arranged between the oil tank and the input end of the double gear pump, the input end of the oil absorption filter is communicated with the oil tank, and the output end of the oil absorption filter is communicated with the input end of the double gear pump.
A power unit oil circuit mounting structure for a small shear elevator is characterized in that the structure is connected by adopting the oil circuit and comprises a pump base, a motor is fixed at the rear flange end of the pump base, a pump base oil inlet is formed in the front flange end, a duplex gear pump is fixed on the flange surface at the position of the pump base oil inlet, an input shaft of the duplex gear pump is connected with an output shaft of the motor through a coupler, an oil inlet pipe is arranged on the rear cover of the duplex gear pump, an oil suction filter is mounted at the tail end of the oil inlet pipe, an oil return pipe is arranged on the flange surface of the pump base, and the oil inlet pipe and the oil return pipe are positioned in an oil tank; the pump seat is also provided with a first overflow valve, a first two-way check valve and a first two-way check valve; the valve block is also provided with a first one-way valve, a second one-way valve, a first electromagnetic valve, a second electromagnetic valve and a balance valve, and the first oil outlet and the second oil outlet are arranged on the valve block.
The positive progress effect of this application lies in:
the pump base is designed highly integrally and optimally, so that the pressure loss of an oil path in the pump base is small, the hydraulic oil path is designed simply and practically, two lifting speeds can be realized by adopting double gear pumps (with different discharge capacities), and the small-discharge gear pump can be used for adjusting a girder of a lifter.
Drawings
Fig. 1 is a schematic structural view of an oil passage according to the present invention.
Fig. 2 is a schematic structural view of the mounting structure of the present invention.
Fig. 3 is a bottom view of the mounting structure of the present invention.
Fig. 4 is a top view of the mounting structure of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover such processes, methods, systems, articles, or apparatus that comprise a list of steps or elements, are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, articles, or apparatus.
In fig. 1-4, the oil-suction double-gear pump comprises an oil tank 1, an oil suction filter 2, a double-gear pump 3, a motor 4, a first overflow valve 5, a second overflow valve 6, a first double-way check valve 7, a second double-way check valve 8, a first check valve 9, a second check valve 10, a first electromagnetic valve 11, a second electromagnetic valve 12, a balance valve 13, a pump seat 14, a transition block 15, a valve block 16, an oil inlet pipe 17, an oil return pipe 18, a coupler 19, a first oil outlet 20, a second oil outlet 21 and the like.
As shown in figure 1, the utility model is a power unit oil circuit for a small shear lift, an oil tank 1 is communicated with an input end of a duplicate gear pump 3 through an oil pipe, the duplicate gear pump 3 is provided with a first output end and a second output end, the first output end of the duplicate gear pump 3 is communicated with a first oil outlet 20 through a first valve group, the first output end of the duplicate gear pump 3 is communicated with the first oil outlet 20 through the first valve group, the second output end of the duplicate gear pump 3 is communicated with a second oil outlet 21 through a second valve group, and the first oil outlet 20 and the second oil outlet 21 are both communicated with an oil cylinder of the shear lift.
The double gear pump 3 is driven by a motor 4. The duplex gear pump 3 is internally provided with different transmission ratios, and the oil output amounts of the first oil outlet 20 and the second oil outlet 21 are different, so that the two flow rates can be switched and input into the oil tank of the shearing machine.
The first valve bank comprises a first check valve 9, the input end of the first check valve 9 is communicated with the first output end of the duplicate gear pump 3, the output end of the first check valve 9 is communicated with the first oil outlet 20 and the input end of the first electromagnetic valve 11 respectively, and the output end of the first electromagnetic valve 11 is communicated with the oil tank 1.
In order to maintain the safety of the hydraulic oil circuit, a first overflow valve 5 is arranged between the first output end of the duplicate gear pump 3 and the first one-way valve 9, the input end of the first overflow valve 5 is communicated with the first output end of the duplicate gear pump 3, and the output end of the first overflow valve 5 is communicated with the oil tank 1.
In order to prevent the oil in the hydraulic oil circuit from flowing backwards, a first two-way check valve 7 is arranged between the first overflow valve 5 and the first one-way valve 9, the input end of the first two-way check valve 7 is communicated with the output end of the first overflow valve 5, and the output end of the first two-way check valve 7 is communicated with the oil tank 1.
The second valves comprise second one-way valves 10, the input ends of the second one-way valves 10 are communicated with the second output ends of the double gear pump 3, the output ends of the second one-way valves 10 are respectively communicated with the second oil outlets 21 and the input ends of second electromagnetic valves 12, and the output ends of the second electromagnetic valves 12 are communicated with the oil tank 1.
In order to maintain the safety of the hydraulic oil circuit, a second overflow valve 6 is arranged between the second output end of the duplicate gear pump 3 and the second one-way valve 10, the input end of the second overflow valve 6 is communicated with the second output end of the duplicate gear pump 3, and the output end of the second overflow valve 6 is communicated with the oil tank 1.
In order to prevent the oil in the hydraulic oil circuit from flowing backwards, a second bidirectional check valve 8 is arranged between the second overflow valve 6 and the second one-way valve 10, the input end of the second bidirectional check valve 8 is communicated with the output end of the second overflow valve 6, and the output end of the second bidirectional check valve 8 is communicated with the oil tank 1.
In order to filter out impurities in the hydraulic oil, an oil absorption filter 2 is arranged between the oil tank 1 and the input end of the double gear pump 3, the input end of the oil absorption filter 2 is communicated with the oil tank 1, and the output end of the oil absorption filter 2 is communicated with the input end of the double gear pump 3.
As shown in fig. 2-4, a power unit oil circuit mounting structure for a small shear elevator comprises a pump base 14, a motor 4 is fixed at the rear flange end of the pump base 14, a pump base oil inlet is arranged at the front flange end, a duplicate gear pump 3 is fixed on the flange surface at the position of the pump base oil inlet, an input shaft of the duplicate gear pump 3 is connected with an output shaft of the motor 4 through a coupler 19, an oil inlet pipe 17 is arranged on the rear cover of the duplicate gear pump, an oil absorption filter 2 is mounted at the tail end of the oil inlet pipe 17, an oil return pipe 18 is arranged on the flange surface of the pump base, and the oil inlet pipe 17 and the oil return pipe 18 are located in an oil tank 1.
The pump seat 14 is also provided with a first overflow valve 5, a second overflow valve 6, a first two-way check valve 7 and a second two-way check valve 8.
The valve block 16 is further provided with a first check valve 9, a second check valve 10, a first electromagnetic valve 11, a second electromagnetic valve 12 and a balance valve 13, and the first oil outlet 20 and the second oil outlet 21 are arranged on the valve block 16.
The specific working principle of the utility model is as follows:
and (3) lifting: the motor 4 is powered on, the motor 4 is started after being powered on, the double gear pump 3 is driven by the coupler 19, oil is absorbed by the double gear pump 3 from the oil tank 1, oil enters the double gear pump 3 through the oil absorption filter 2 and the oil inlet pipe 17, enters the pump seat 14 from two oil outlets of the double gear pump respectively, enters the valve block 16 through an oil way, one way of oil enters the oil cylinder of the lifting equipment from the first oil outlet 20 through the first check valve 9, and the other way of oil enters the oil cylinder of the lifting equipment from the second oil outlet 21 through the second check valve 10.
In the process, the first electromagnetic valve 11 and the second electromagnetic valve 12 are not electrified and are in a closed state; the first two-way check valve 7 is electrified to control the first oil outlet 20 to discharge oil, the second two-way check valve 8 is electrified to control the second oil outlet 21 to discharge oil, and the first overflow valve 5 and the second overflow valve 6 play a role in protecting oil paths.
A descending stage: the power supply of the motor 4 is cut off, the motor 4 stops working, and the system is in a pressure maintaining state; when the first oil outlet 20 descends, the first electromagnetic valve 11 is electrified, and the lifting equipment descends; when the second oil outlet 21 descends, the second electromagnetic valve 12 is electrified, the lifting equipment descends, and the descending speed is controlled by the balance valve 13.
It is understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make variations, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a power unit oil circuit for small shear lift, its characterized in that, the oil tank passes through oil pipe intercommunication duplicate gear pump (3) input, and duplicate gear pump (3) have first output and second output, and the first output of duplicate gear pump (3) is through first valves intercommunication first oil-out (20), and duplicate gear pump (3) second output passes through second valves intercommunication second oil-out (21).
2. The power unit oil circuit for a small shear lift according to claim 1, wherein the double gear pump (3) is driven by a motor (4).
3. The power unit oil circuit for the small shear elevator as defined in claim 2, wherein the first valve set comprises a first check valve (9), an input end of the first check valve (9) is communicated with a first output end of the duplicate gear pump (3), an output end of the first check valve (9) is respectively communicated with the first oil outlet (20) and an input end of a first electromagnetic valve (11), and an output end of the first electromagnetic valve (11) is communicated with the oil tank (1).
4. The power unit oil circuit for the small shear elevator as defined in claim 3, wherein a first overflow valve (5) is arranged between the first output end of the duplicate gear pump (3) and the first check valve (9), the input end of the first overflow valve (5) is communicated with the first output end of the duplicate gear pump (3), and the output end of the first overflow valve (5) is communicated with the oil tank (1).
5. The power unit oil circuit for the small shear elevator as defined in claim 4, wherein a first two-way check valve (7) is arranged between the first overflow valve (5) and the first one-way valve (9), the input end of the first two-way check valve (7) is communicated with the output end of the first overflow valve (5), and the output end of the first two-way check valve (7) is communicated with the oil tank (1).
6. The power unit oil circuit for the small shear elevator as defined in claim 5, wherein the second valve set comprises a second check valve (10), an input end of the second check valve (10) is communicated with a second output end of the double gear pump (3), an output end of the second check valve (10) is respectively communicated with the second oil outlet (21) and an input end of a second electromagnetic valve (12), and an output end of the second electromagnetic valve (12) is communicated with the oil tank (1).
7. The power unit oil circuit for the small shear elevator as defined in claim 6, wherein a second overflow valve (6) is arranged between the second output end of the double gear pump (3) and the second check valve (10), the input end of the second overflow valve (6) is communicated with the second output end of the double gear pump (3), and the output end of the second overflow valve (6) is communicated with the oil tank (1).
8. The power unit oil circuit for the small shear elevator as defined in claim 7, wherein a second bidirectional check valve (8) is arranged between the second overflow valve (6) and the second check valve (10), the input end of the second bidirectional check valve (8) is communicated with the output end of the second overflow valve (6), and the output end of the second bidirectional check valve (8) is communicated with the oil tank (1).
9. The power unit oil circuit for the small shear elevator as defined in claim 8, wherein an oil suction filter (2) is arranged between the oil tank (1) and the input end of the double gear pump (3), the input end of the oil suction filter (2) is communicated with the oil tank (1), and the output end of the oil suction filter (2) is communicated with the input end of the double gear pump (3).
10. An oil way installation structure of a power unit for a small shear elevator is characterized in that the structure adopts the oil way as in claim 9 for connection and comprises a pump base (14), a motor (4) is fixed at the rear flange end of the pump base (14), a pump base oil inlet is formed in the front flange end, a duplicate gear pump (3) is fixed on the flange surface at the position of the pump base oil inlet, an input shaft of the duplicate gear pump (3) is connected with an output shaft of the motor (4) through a coupler (19), an oil inlet pipe (17) is arranged on the rear cover of the duplicate gear pump, an oil absorption filter (2) is installed at the tail end of the oil inlet pipe (17), an oil return pipe (18) is arranged on the flange surface of the pump base, and the oil inlet pipe (17) and the oil return pipe (18) are located in an oil tank (1); the pump seat (14) is also provided with a first overflow valve (5), a second overflow valve (6), a first two-way check valve (7) and a second two-way check valve (8); the valve block (16) is also provided with a first one-way valve (9), a second one-way valve (10), a first electromagnetic valve (11), a second electromagnetic valve (12) and a balance valve (13), and the first oil outlet (20) and the second oil outlet (21) are arranged on the valve block (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398325.1U CN215828265U (en) | 2021-06-22 | 2021-06-22 | Power unit oil circuit and mounting structure for small shear elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121398325.1U CN215828265U (en) | 2021-06-22 | 2021-06-22 | Power unit oil circuit and mounting structure for small shear elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215828265U true CN215828265U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121398325.1U Active CN215828265U (en) | 2021-06-22 | 2021-06-22 | Power unit oil circuit and mounting structure for small shear elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215828265U (en) |
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2021
- 2021-06-22 CN CN202121398325.1U patent/CN215828265U/en active Active
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