CN211737629U - Hydro-pneumatic spring balancing system - Google Patents
Hydro-pneumatic spring balancing system Download PDFInfo
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- CN211737629U CN211737629U CN202020346381.XU CN202020346381U CN211737629U CN 211737629 U CN211737629 U CN 211737629U CN 202020346381 U CN202020346381 U CN 202020346381U CN 211737629 U CN211737629 U CN 211737629U
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Abstract
The application provides a hydro-pneumatic spring balancing system relates to hydraulic drive technical field. The hydro-pneumatic spring balancing system comprises a gear rack swing cylinder, a control valve and an energy storage device. The gear rack swinging cylinder is used for driving the load to ascend or descend. The gear rack swinging cylinder comprises a gear, a driving cylinder and a balance cylinder. A first rack is arranged in the driving cylinder, a second rack is arranged in the balance cylinder, and the first rack and the second rack are both meshed with the gear. The control valve is connected with the driving cylinder and used for controlling hydraulic oil to enter and exit the driving cylinder. The energy storage device is communicated with the piston cavity of the balance cylinder and used for storing energy generated by the gravity work of the load when the load descends and releasing the stored energy when the load ascends. When the load falls, the hydro-pneumatic spring balancing system stores energy generated by gravity acting. When the load rises, the stored energy is released, the gravity is overcome to do work, the power loss of the hydraulic system is small, and the temperature rise is small.
Description
Technical Field
The application relates to the technical field of hydraulic drive, in particular to a hydro-pneumatic spring balancing system.
Background
In the related art, there are many apparatuses that need to work against gravity, and the total sum of the work of gravity is zero during the ascending and descending processes of the apparatuses. The traditional hydraulic driving mode is that an actuating mechanism is directly driven by a hydraulic cylinder, a hydraulic motor, a swing cylinder and the like, so that equipment is driven to ascend and descend, the power loss of a hydraulic system is large, and the temperature rise is fast. If when the equipment falls, the energy generated by gravity acting is stored, and when the equipment rises, the stored energy is released to overcome the gravity acting, so that the power loss of the hydraulic system is greatly reduced.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of this application is to provide a hydro-pneumatic spring balancing system, it aims at improving among the relevant art hydraulic system power loss big, the fast problem of temperature rise.
The embodiment of the application provides a hydro-pneumatic spring balancing system, which comprises a gear rack swinging cylinder, a control valve and an energy storage device. The gear rack swinging cylinder is used for driving the load to ascend or descend. The gear rack swinging cylinder comprises a gear, a driving cylinder and a balance cylinder. A first rack is arranged in the driving cylinder, a second rack is arranged in the balance cylinder, and the first rack and the second rack are both meshed with the gear. The control valve is connected with the driving cylinder and used for controlling hydraulic oil to enter and exit the driving cylinder. The energy storage device is communicated with the piston cavity of the balance cylinder and used for storing energy generated by the gravity work of the load when the load descends and releasing the stored energy when the load ascends.
The gear rack oscillating cylinder is used for driving the load to ascend or descend, and the control valve is arranged, so that hydraulic oil can be conveniently controlled to enter and exit the driving cylinder. Through the arrangement of the energy storage device, when the load falls, the energy storage device stores energy generated by gravity acting. When the load rises, the energy storage device releases the stored energy, overcomes the gravity to do work, and the hydraulic system has smaller power loss and temperature rise.
As an optional technical scheme of this application embodiment, actuating cylinder and balance cylinder are two piston cylinders. Two pistons of the driving cylinder are connected through a first rack, and two pistons of the balancing cylinder are connected through a second rack. The driving cylinder and the balance cylinder are set to be double piston cylinders, two pistons of the driving cylinder are connected through a first rack, two pistons of the balance cylinder are connected through a second rack, the action of the gear and the rack is controlled conveniently through the pistons, and the action of a load is controlled conveniently.
As an optional technical scheme of this application embodiment, the control valve is the switching-over valve, and the switching-over valve includes oil inlet, oil return opening, first work hydraulic fluid port and second work hydraulic fluid port. The oil inlet is connected with the oil inlet path, and the oil return port is connected with the oil return path. The first working oil port is connected with a first piston cavity of the driving cylinder, and the second working oil port is connected with a second piston cavity of the driving cylinder. The control valve is a reversing valve and comprises an oil inlet, an oil return port, a first working oil port and a second working oil port, so that oil can be fed from the oil inlet channel to the first working oil port conveniently, and the gear rotates anticlockwise. Or the oil is fed from the oil feeding path to the second working oil port, so that the gear rotates clockwise.
As an optional technical solution of the embodiment of the present application, two energy storage devices are provided, one energy storage device is communicated with the first piston cavity of the balancing cylinder, and the other energy storage device is communicated with the second piston cavity of the balancing cylinder. The two energy storage devices are arranged, so that the two energy storage devices store energy respectively in the ascending and descending processes of the load, and the energy storage efficiency is higher.
As an optional technical scheme of the embodiment of the application, the energy storage device is an energy accumulator, and the energy accumulator is in fluid communication with a piston cavity of the balance cylinder. The energy storage device is an energy accumulator, and the storage efficiency is high.
As an optional technical scheme of the embodiment of the application, the hydro-pneumatic spring balancing system further comprises a liquid charging oil way. One end of the liquid filling oil way is connected with the oil inlet way, and the other end of the liquid filling oil way is connected with the energy storage device. And a liquid-filled throttle valve is arranged on the liquid-filled oil path. And by arranging the liquid charging oil way, hydraulic oil can be conveniently charged into the energy storage device. And the liquid filling throttle valve is arranged, so that the liquid filling oil way is convenient to open and close.
As an optional technical scheme of the embodiment of the application, a liquid filling pressure reducing valve is further arranged on the liquid filling oil way. The charging pressure of the energy storage device is convenient to control by arranging the charging pressure reducing valve.
As an optional technical scheme of the embodiment of the application, the hydro-pneumatic spring balancing system further comprises an unloading oil way. One end of the unloading oil way is connected with the oil return way, and the other end of the unloading oil way is connected with the energy storage device. And an unloading throttle valve is arranged on the unloading oil way. By arranging the unloading oil way, hydraulic oil in the energy storage device can be conveniently discharged. By arranging the unloading throttle valve, the unloading oil way is convenient to open and close.
As an optional technical scheme of the embodiment of the application, the energy storage device is an air storage tank, and the air storage tank is in air communication with a piston cavity of the balance cylinder. The energy storage device is arranged as an air storage tank, so that when a load falls, air in the energy storage device is compressed, and the energy storage device stores energy generated by gravity acting. When the load rises, compressed gas in the energy storage device is restored to the original state, and the energy storage device releases stored energy to overcome gravity to do work.
As an optional technical scheme of the embodiment of the application, the air storage tank is filled with nitrogen. The gas storage tank is filled with nitrogen, so that the method is safe.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a hydro-pneumatic spring balancing system (energy storage device is an accumulator) according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a hydro-pneumatic spring balancing system (an energy storage device is an air storage tank) according to an embodiment of the present disclosure.
Icon: 10-hydro-pneumatic spring trim system; 100-a rack and pinion swing cylinder; 110-a gear; 120-a drive cylinder; 121-a first rack; 130-a balancing cylinder; 131-a second rack; 200-a control valve; a P-oil inlet; t-oil return port; a-a first working oil port; b-a second working oil port; 300-an energy storage device; 400-liquid charging oil way; 410-liquid-filled throttle valve; 420-a liquid-filled pressure relief valve; 500-unloading oil way; 510-unloading throttle valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The traditional hydraulic driving mode is that a hydraulic cylinder, a hydraulic motor, a swing cylinder and the like are used for directly driving an actuating mechanism, the power loss of a hydraulic system is large, and the temperature rise is fast. In view of the situation, the applicant provides a hydro-pneumatic spring balancing system on the basis of a great amount of theoretical research and actual operation. When the load falls, the hydro-pneumatic spring balancing system stores energy generated by gravity acting. When the load rises, the stored energy is released, the gravity is overcome to do work, the power loss of the hydraulic system is small, and the temperature rise is small.
Examples
Referring to fig. 1, the present embodiment provides a hydro-pneumatic spring balancing system 10, where the hydro-pneumatic spring balancing system 10 includes a rack and pinion swing cylinder 100, a control valve 200, and an energy storage device 300. The rack and pinion swing cylinder 100 is used to drive the load up or down. The rack and pinion swing cylinder 100 includes a gear 110, a driving cylinder 120, and a balancing cylinder 130. A first rack 121 is arranged in the driving cylinder 120, a second rack 131 is arranged in the balancing cylinder 130, and both the first rack 121 and the second rack 131 are engaged with the gear 110. A control valve 200 is connected to the drive cylinder 120 for controlling the flow of hydraulic oil into and out of the drive cylinder 120. The energy storage device 300 communicates with the piston chamber of the balancing cylinder 130 for storing energy generated by the gravity work of the load when the load is lowered and releasing the stored energy when the load is raised.
By providing the rack and pinion swing cylinder 100 for driving the load to ascend or descend, the hydraulic oil is controlled to enter and exit the driving cylinder 120 by providing the control valve 200. By providing the energy storage device 300, the energy storage device 300 stores energy generated by gravity work as the load falls. When the load rises, the energy storage device 300 releases the stored energy, overcomes the gravity to do work, and has small power loss and temperature rise of the hydraulic system.
Referring to fig. 1, in the present embodiment, a rack and pinion swing cylinder 100 includes a gear 110, a driving cylinder 120, and a balance cylinder 130. A first rack 121 is arranged in the driving cylinder 120, a second rack 131 is arranged in the balancing cylinder 130, and both the first rack 121 and the second rack 131 are engaged with the gear 110. In this embodiment, the drive cylinder 120 and the balance cylinder 130 are both dual piston cylinders. The two pistons of the drive cylinder 120 are connected by a first toothed rack 121 and the two pistons of the balance cylinder 130 are connected by a second toothed rack 131. The driving cylinder 120 and the balance cylinder 130 are arranged as double piston cylinders, two pistons of the driving cylinder 120 are connected through a first rack 121, two pistons of the balance cylinder 130 are connected through a second rack 131, and therefore the gear and rack actions can be controlled conveniently through the pistons, and the load actions can be controlled conveniently. In operation, oil is filled toward one side of the driving cylinder 120 to drive the piston of the driving cylinder 120 to move, and then the rack is driven to move, and the rack drives the gear 110 to rotate, and then the load is driven to move.
Referring to fig. 1, in the present embodiment, the control valve 200 is a reversing valve, and the reversing valve includes an oil inlet P, an oil return port T, a first working oil port a, and a second working oil port B. The oil inlet P is connected with the oil inlet path, and the oil return port T is connected with the oil return path. The first working oil port a is connected to the first piston chamber of the driving cylinder 120, and the second working oil port B is connected to the second piston chamber of the driving cylinder 120. The control valve 200 is a reversing valve and includes an oil inlet P, an oil return port T, a first working oil port a and a second working oil port B, so that oil is fed from the oil feed path to the first working oil port a, and the gear 110 rotates counterclockwise. Or the oil is fed from the oil feeding path to the second working oil port B, so that the gear 110 rotates clockwise.
When the gear 110 needs to rotate counterclockwise, the oil inlet P feeds oil from the oil inlet path, and the oil enters the first piston cavity of the driving cylinder 120 through the first working oil port a, so as to push the piston to move rightward, drive the rack to move rightward, and drive the gear 110 to rotate counterclockwise. At this time, the oil in the second piston chamber of the driving cylinder 120 flows to the oil return path through the second working oil port B to the oil return port T. When the gear 110 needs to rotate clockwise, the control valve 200 is switched to enable the oil inlet P of the oil to enter the oil inlet path, and the oil enters the second piston cavity of the driving cylinder 120 through the second working oil port B, so that the piston is pushed to move leftwards, the rack is driven to move leftwards, and the gear 110 can be driven to rotate clockwise. At this time, the oil in the first piston chamber of the driving cylinder 120 flows to the oil return path through the first working oil port a to the oil return port T.
Referring to fig. 1, in the present embodiment, two energy storage devices 300 are provided, one energy storage device 300 is communicated with the first piston cavity of the balance cylinder 130, and the other energy storage device 300 is communicated with the second piston cavity of the balance cylinder 130. The two energy storage devices 300 are arranged, so that the two energy storage devices 300 store energy respectively in the processes of load ascending and load descending, and the energy storage efficiency is high. In this embodiment, the energy storage device 300 is an accumulator in fluid communication with the piston cavity of the balancing cylinder 130. The energy storage device 300 is an accumulator, and has high storage efficiency. Accordingly, hydro-pneumatic spring trim system 10 further includes a charge line 400. One end of the charging oil path 400 is connected to the oil inlet path, and the other end is connected to the energy storage device 300. The liquid-filled oil path 400 is provided with a liquid-filled throttle valve 410. By providing the charge oil path 400, it is convenient to charge the energy storage device 300 with hydraulic oil. By providing the charge throttle valve 410, opening and closing of the charge oil path 400 is facilitated. The charging oil path 400 is also provided with a charging pressure reducing valve 420. By providing a charge pressure relief valve 420, the charge pressure of the energy storage device 300 is facilitated to be controlled. During charging, the charging throttle 410 is opened and the charging pressure of the energy storage device 300 is adjusted by adjusting the charging pressure relief valve 420. After the end of the priming, the priming throttle valve 410 is closed.
Referring to fig. 1, in the present embodiment, the hydro-pneumatic spring balancing system 10 further includes an unloading oil path 500. One end of the unloading oil passage 500 is connected to the oil return passage, and the other end is connected to the energy storage device 300. The unloading throttle valve 510 is disposed on the unloading oil path 500. By providing the unloading oil passage 500, it is convenient to discharge the hydraulic oil in the energy storage device 300. By providing the unloading throttle valve 510, it is convenient to open and close the unloading oil passage 500. When the hydraulic system needs to be disassembled for maintenance, the unloading throttle valve 510 is opened slowly to unload the energy storage device 300.
The hydro-pneumatic spring trim system 10 of the present embodiment operates by: when the apparatus is lowered, under the action of gravity load, the piston on the balancing cylinder 130 side of the rack and pinion swing cylinder 100 forces oil out of the oil cylinder barrel and into the energy storage device 300 connected thereto. Thereby storing energy generated by the work of gravity in the energy storage device 300. When the equipment is lifted, the energy storage device 300 releases the stored energy, outputs oil to the corresponding oil cylinder barrel of the balance cylinder 130 of the rack and pinion oscillating cylinder 100 connected with the oil cylinder barrel, pushes the piston to move, and therefore the rack and pinion oscillating cylinder 100 outputs torque to overcome the gravity load to do work.
Referring to fig. 2, in an alternative embodiment, the energy storage device 300 is an air tank in air communication with the piston cavity of the balancing cylinder 130. The energy storage device 300 is provided as an air tank so that when a load falls, air in the energy storage device 300 is compressed and the energy storage device 300 stores energy generated by gravity work. When the load rises, the compressed gas in the energy storage device 300 is restored to the original state, and the energy storage device 300 releases the stored energy to overcome the gravity to do work. Optionally, the gas tank is filled with nitrogen. The gas storage tank is filled with nitrogen, so that the method is safe.
In this embodiment, hydro-pneumatic spring trim system 10 operates by: when the equipment descends, under the action of gravity load, the piston on one side of the balance cylinder 130 of the rack-and-pinion swing cylinder 100 presses nitrogen out of the cylinder barrel and enters the energy storage device 300 connected with the cylinder barrel, so that energy generated by gravity work is stored in the energy storage device 300. When the equipment ascends, the energy storage device 300 releases the stored energy, outputs nitrogen to the corresponding cylinder barrel of the balance cylinder 130 of the rack and pinion oscillating cylinder 100 connected with the nitrogen, pushes the piston to move, and therefore the rack and pinion oscillating cylinder 100 outputs torque to overcome the gravity load to do work.
The present embodiment provides a hydro-pneumatic spring trim system 10, the hydro-pneumatic spring trim system 10 including a rack and pinion swing cylinder 100, a control valve 200, and an energy storage device 300. The rack and pinion swing cylinder 100 is used to drive the load up or down. The rack and pinion swing cylinder 100 includes a gear 110, a driving cylinder 120, and a balancing cylinder 130. A first rack 121 is arranged in the driving cylinder 120, a second rack 131 is arranged in the balancing cylinder 130, and both the first rack 121 and the second rack 131 are engaged with the gear 110. A control valve 200 is connected to the drive cylinder 120 for controlling the flow of hydraulic oil into and out of the drive cylinder 120. The energy storage device 300 communicates with the piston chamber of the balancing cylinder 130 for storing energy generated by the gravity work of the load when the load is lowered and releasing the stored energy when the load is raised. By providing the rack and pinion swing cylinder 100 for driving the load to ascend or descend, the hydraulic oil is controlled to enter and exit the driving cylinder 120 by providing the control valve 200. By providing the energy storage device 300, the energy storage device 300 stores energy generated by gravity work as the load falls. When the load rises, the energy storage device 300 releases the stored energy, overcomes the gravity to do work, and has small power loss and temperature rise of the hydraulic system.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A hydro-pneumatic spring trim system, comprising:
the gear rack swinging cylinder is used for driving a load to ascend or descend and comprises a gear, a driving cylinder and a balance cylinder, a first rack is arranged in the driving cylinder, a second rack is arranged in the balance cylinder, and the first rack and the second rack are both meshed with the gear;
the control valve is connected with the driving cylinder and used for controlling hydraulic oil to enter and exit the driving cylinder;
and the energy storage device is communicated with the piston cavity of the balance cylinder and is used for storing energy generated by the gravity work of the load when the load descends and releasing the stored energy when the load ascends.
2. The hydro-pneumatic spring balancing system of claim 1, wherein the drive cylinder and the balancing cylinder are each dual piston cylinders, the two pistons of the drive cylinder being connected by the first rack and the two pistons of the balancing cylinder being connected by the second rack.
3. The hydro-pneumatic spring balancing system according to claim 2, wherein the control valve is a reversing valve, the reversing valve includes an oil inlet, an oil return port, a first working oil port and a second working oil port, the oil inlet is connected to the oil inlet path, the oil return port is connected to the oil return path, the first working oil port is connected to the first piston cavity of the driving cylinder, and the second working oil port is connected to the second piston cavity of the driving cylinder.
4. The hydro-pneumatic spring balancing system of claim 2, wherein there are two energy storage devices, one energy storage device in communication with the first piston chamber of the balancing cylinder and the other energy storage device in communication with the second piston chamber of the balancing cylinder.
5. The hydro-pneumatic spring balancing system of claim 1, wherein the energy storage device is an accumulator in fluid communication with a piston cavity of the balancing cylinder.
6. The hydro-pneumatic spring balancing system of claim 5, further comprising a charge line, wherein one end of the charge line is connected to an oil inlet line, the other end of the charge line is connected to the energy storage device, and a charge throttle valve is disposed on the charge line.
7. The hydro-pneumatic spring balancing system of claim 6, wherein a charge relief valve is further provided on the charge oil line.
8. The hydro-pneumatic spring balancing system as defined in claim 5 further comprising an unloading oil passage, wherein one end of the unloading oil passage is connected to an oil return passage and the other end is connected to the energy storage device, and an unloading throttle valve is disposed on the unloading oil passage.
9. The hydro-pneumatic spring balancing system of claim 1, wherein the energy storage device is an air reservoir in gaseous communication with a piston chamber of the balancing cylinder.
10. The hydro-pneumatic spring balancing system of claim 9, wherein the reservoir is filled with nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020346381.XU CN211737629U (en) | 2020-03-18 | 2020-03-18 | Hydro-pneumatic spring balancing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020346381.XU CN211737629U (en) | 2020-03-18 | 2020-03-18 | Hydro-pneumatic spring balancing system |
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| CN211737629U true CN211737629U (en) | 2020-10-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343877A (en) * | 2020-12-18 | 2021-02-09 | 湘潭大学 | Hydraulic driving loop of swing oil cylinder |
| CN113096980A (en) * | 2021-03-31 | 2021-07-09 | 西安交通大学 | Quick reversing device and method for on-load tap-changer based on hydraulic transmission |
-
2020
- 2020-03-18 CN CN202020346381.XU patent/CN211737629U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343877A (en) * | 2020-12-18 | 2021-02-09 | 湘潭大学 | Hydraulic driving loop of swing oil cylinder |
| CN113096980A (en) * | 2021-03-31 | 2021-07-09 | 西安交通大学 | Quick reversing device and method for on-load tap-changer based on hydraulic transmission |
| CN113096980B (en) * | 2021-03-31 | 2022-05-20 | 西安交通大学 | Quick reversing device and method for on-load tap-changer based on hydraulic transmission |
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