CN209012151U - A kind of hydraulic push rod drive system - Google Patents
A kind of hydraulic push rod drive system Download PDFInfo
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- CN209012151U CN209012151U CN201821619700.9U CN201821619700U CN209012151U CN 209012151 U CN209012151 U CN 209012151U CN 201821619700 U CN201821619700 U CN 201821619700U CN 209012151 U CN209012151 U CN 209012151U
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- push rod
- oil outlet
- reversal valve
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Abstract
The utility model discloses a kind of hydraulic push rod drive systems, including hydraulic oil storage device, hydraulic pump, first reversal valve, second reversal valve, pressure inductor and hydraulic push rod, by the way that the first reversal valve and the second reversal valve are arranged between hydraulic push rod and hydraulic pump, by the rodless cavity of the 4th oil outlet connection the first oil outlet and hydraulic push rod of the second reversal valve, so that hydraulic pump is when low-load stroke works, by in the hydraulic covering to rodless cavity in rod chamber, improve the conveying capacity of rodless cavity, hydraulic push rod is improved in the working efficiency of low-load stroke, and it is restored on normal hydraulic oil transmitting stream road when hydraulic push rod is in high load stroke by the second reversal valve switched path, guarantee efficiency of hydraulic push rod during push.
Description
Technical field
The utility model relates to hydraulic system technical field, in particular to a kind of hydraulic push rod drive system.
Background technique
Currently, push plate oil cylinder used by domestic push-plate type garbage compression station directly controls release using reversal valve
With the operating mode of withdrawal.This operating mode has difference in areas, the speed that push plate oil cylinder is released due to push plate oil cylinder size chamber
Slower than the speed of withdrawal, the concrete reason for generating problems is as follows:
1, the preceding half trip of push plate oil cylinder push is low-load stroke, and stroke provides aerodynamic power to the low-load at a slow speed
Source is a kind of waste, and it is low to also result in whole efficiency；
It 2, is rod chamber oil inlet, rodless cavity oil return when push plate is withdrawn.Since the small chamber of sectional area and volume ratio of big chamber comes
Greatly, the return flow of rod chamber is big therefore when push plate oil cylinder is withdrawn, and crushing when oil return passes through reversal valve is big, which can only
It is completely reformed into heat, for hydraulic system, which is substantially done harm rather than good, and even needs to be arranged oil liquid cooling sometimes
Facility, and the work of oil liquid cooling installation is promoted to be also required to consuming energy.Therefore it is greatly to waste to the energy that oil cylinder, which withdraws process,.
Some producers, the country can only greatly increase the latus rectum of reversal valve to reduce the crushing at present, in this way and cause the valve at
Originally rising sharply.
Utility model content
For this reason, it may be necessary to provide a kind of hydraulic push rod drive system, have to solve push plate oil cylinder size chamber in the prior art
Difference in areas, fluid flow is uneven between rod chamber and rodless cavity, the problem for causing oil cylinder pushing efficiency low.
To achieve the above object, a kind of hydraulic push rod drive system, including hydraulic oil storage device, liquid are inventor provided
Press pump, the first reversal valve, the second reversal valve, pressure inductor and hydraulic push rod；
First reversal valve includes the first oil inlet, the first oil outlet, the second oil inlet and the second oil outlet, and first changes
To the first oil inlet and hydraulic oil storage device piping connection, the first oil outlet of the first reversal valve and the nothing of hydraulic push rod of valve
Rod cavity piping connection, the second oil inlet of the first reversal valve and the rod chamber piping connection of hydraulic push rod, the of the first reversal valve
Two oil outlets and hydraulic oil storage device piping connection；
Second reversal valve is set to the pipeline between the rod chamber of hydraulic push rod and first the second oil inlet of reversal valve
On, including third oil inlet, third oil outlet and the 4th oil outlet, the rod chamber pipeline company of third oil inlet and hydraulic push rod
It connects, third oil outlet and the second oil inlet piping connection；4th oil outlet is gone out by pipeline with hydraulic push rod rodless cavity and first
Pipeline between hydraulic fluid port is connected；
The hydraulic pump is set on the pipeline between hydraulic oil storage device and the first oil inlet；
The pressure inductor is set on the pipeline of hydraulic pump oil outlet, for detecting the pressure of hydraulic pump output.
It further, further include hydraulically-controlled one-way valve, the hydraulically-controlled one-way valve includes the 4th oil inlet, the 5th oil outlet and leads to
Slave interrupt interface, the 4th oil inlet are connected with the pipeline between hydraulic push rod rodless cavity and the first oil outlet, and the described 5th goes out
Pipeline between hydraulic fluid port and the second oil outlet and hydraulic oil storage device is connected, the on-off interface and third oil outlet and the
Pipeline between two oil inlets is connected.
Further, the hydraulic oil storage device selects fuel reserve tank.
Further, further include overflow valve, the overflow valve by the oil inlet end of pipeline connection hydraulic oil storage device and
Hydraulic pump oil outlet.
It further, further include hydraulic pump driving device, the hydraulic pump driving device is connect with hydraulic pump driving.
Further, the hydraulic pump driving device selects motor.
It further, further include oil feed non-return valve, the oil feed non-return valve is set between hydraulic pump and the first oil inlet
Pipeline on.
It is different from the prior art, above-mentioned technical proposal has the advantages that by setting between hydraulic push rod and hydraulic pump
The first reversal valve and the second reversal valve are set, is connected to the first oil outlet and hydraulic push rod by the 4th oil outlet of the second reversal valve
Rodless cavity, so that hydraulic pump when low-load stroke works, by the hydraulic covering to rodless cavity in rod chamber, is improved without bar
The conveying capacity of chamber improves hydraulic push rod in the working efficiency of low-load stroke, and when hydraulic push rod is in high load stroke
By the second reversal valve switched path it is restored to normal hydraulic oil transmitting stream road, guarantees hydraulic push rod during push
Efficiency.
Detailed description of the invention
Fig. 1 is the Integral connection structure schematic diagram of hydraulic push rod drive system in the utility model embodiment.
Description of symbols:
101, hydraulic oil storage device；
201, hydraulic pump；
301, the first reversal valve；302, the first oil inlet；303, the first oil outlet；
304, the second oil inlet；305, the second oil outlet；
401, the second reversal valve；402, third oil inlet；403, third oil outlet；
404, the 4th oil outlet；
501, pressure inductor；
601, hydraulic push rod；602, rodless cavity；603, rod chamber；
701, hydraulically-controlled one-way valve；702, the 4th oil inlet；703, the 5th oil outlet；
704, on-off interface；
801, motor；
901, oil feed non-return valve；
1001, overflow valve.
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
It applies example and attached drawing is cooperated to be explained in detail.
Referring to Fig. 1, present embodiment discloses a kind of hydraulic push rod drive system, including hydraulic oil storage device 101, liquid
Press pump 201, the first reversal valve 301, the second reversal valve 401, pressure inductor 501 and hydraulic push rod 601.Hydraulic pump 201 into
Oily end and 101 piping connection of hydraulic oil storage device, the first reversal valve 301 include the first oil inlet 302, the first oil outlet 303,
Second oil inlet 304 and the second oil outlet 305, the second reversal valve 401 include third oil inlet 402, third oil outlet 403 and the
Four oil outlets 404.The oil outlet piping connection of first oil inlet 302 and hydraulic pump 201 of the first reversal valve 301, the first commutation
First oil outlet 303 of valve 301 is connected with the rodless cavity 602 of hydraulic push rod 601, the rod chamber 603 of hydraulic push rod 601 and
The third oil inlet 402 of two reversal valves 401 is connected, the second oil inlet 304 and the second reversal valve 401 of the first reversal valve 301
Third oil outlet 403 be connected by pipeline, the second oil outlet 305 and the hydraulic oil storage device 101 of the first reversal valve 301
It is connected.4th oil outlet 404 of the second reversal valve 401 by pipeline connection in 301 first oil outlet 303 of the first reversal valve with
On pipeline between 601 rodless cavity 602 of hydraulic push rod.Pressure inductor 501 is set on the pipeline of 201 oil outlet of hydraulic pump.
According to above structure, in the specific work process of hydraulic push rod drive system, operator opens hydraulic pump, liquid
Press pump work, and extracts the hydraulic oil in hydraulic oil storage device, at this time the first oil inlet of the first reversal valve and first fuel-displaced
Mouth is connected, and the second oil inlet is connected with the second oil outlet.By the first oil inlet of the first reversal valve to hydraulic push rod
Hydraulic oil is pushed in rodless cavity, hydraulic oil pushes piston so that the piston rod of hydraulic push rod stretches out.It is stretched out in piston rod
In front half section stroke, the hydraulic oil of hydraulic pump pumping is in the state at a slow speed of low-load, and pressure inductor detects that hydraulic pump pumps
The hydraulic oil sent is in low-pressure state, and the third oil inlet of the second reversal valve of control is connected with the 4th oil outlet, hydraulic push rod
Hydraulic oil in rod chamber passes through the third oil inlet and the 4th oil outlet of the second reversal valve, through rodless cavity and the first oil outlet it
Between pipeline be back in rodless cavity, by the hydraulic oil of rod chamber discharge and its it is entrained it is hydraulic be transferred to rodless cavity and provide push away
Hydrodynamic pressure push rod stretches out, and increases the stretching efficiency of the piston rod when hydraulic push rod is in low-load state at a slow speed.
When hydraulic push rod is in the second half section for stretching out stroke, pressure inductor monitors the hydraulic in just of hydraulic push rod
The third oil inlet of normal state, the second reversal valve of driving is connected with third oil outlet, and the hydraulic oil in rod chamber passes through second
The third oil inlet and third oil outlet of reversal valve, flow back to hydraulic oil storage device again, move until hydraulic push rod is completed to stretch out
Make, completes to the promotion of push plate and the squeeze operation of rubbish.
When the piston rod of hydraulic push rod needs to retract, the first oil inlet and the second oil inlet phase of the first reversal valve are controlled
Connection, the first oil outlet and the second oil outlet are connected, and the hydraulic oil of hydraulic pump pumping passes through the first oil inlet and the second oil inlet
Mouth is conveyed to the third oil outlet of the first reversal valve, and the third oil inlet of the second reversal valve is connected with third oil outlet at this time,
Hydraulic oil is mobile to the rod chamber of hydraulic push rod by third oil outlet and third oil inlet, and hydraulic oil increases and pushes away in rod chamber
Piston and piston rod are retracted and are shunk, and the hydraulic oil in rodless cavity is squeezed, by the first oil outlet and the second oil outlet
It returns in hydraulic oil storage device, until completing the contraction work of hydraulic push rod.
Further include hydraulically-controlled one-way valve 701 referring to Fig. 1, in the above-described embodiments, hydraulically-controlled one-way valve 701 include the 4th into
Hydraulic fluid port 702, the 5th oil outlet 703 and on-off interface 704, the 4th oil inlet 702 of hydraulically-controlled one-way valve 701 and the first oil outlet
Pipeline between 303 and 601 rodless cavity of hydraulic push rod is connected.5th oil outlet 703 is deposited with the second oil outlet 305 and hydraulic oil
Pipeline between storage device 101 is connected.Pipeline between on-off interface 704 and third oil outlet 403 and the second oil inlet 304
It is connected, for being passed through hydraulic and controlling 702 mouthfuls of the 4th oil inlet check valve access unlatchings to 703 direction of the 5th oil outlet.
According to above structure, when the piston rod of hydraulic push rod needs to retract, the first oil inlet of the first reversal valve is controlled
Be connected with the second oil inlet, the first oil outlet and the second oil outlet are connected, hydraulic pump pumping hydraulic oil by first into
Hydraulic fluid port and the second oil inlet are conveyed to the third oil outlet of the first reversal valve, at this time the third oil outlet and third of the second reversal valve
Oil inlet is connected, and hydraulic oil is mobile to the rod chamber of hydraulic push rod by third oil outlet and third oil inlet, in rod chamber
Hydraulic oil increases and pushes piston and piston rod to retract and shrinks, and the hydraulic oil in rodless cavity is squeezed, fuel-displaced by first
Mouth and the second oil outlet return in hydraulic oil storage device, during hydraulic oil adverse current, are located at third oil outlet and second
On pipeline between oil inlet, section hydraulic oil is defeated by the on-off interface of pipeline to the hydraulic control one-way valve of connection on-off interface
It send, and hydraulic control one-way valve is made to open access of the 4th oil inlet also between the 5th oil outlet, it is opposite in hydraulic push rod rodless cavity
More in the hydraulic oil conveying capacity in rod chamber, the hydraulic oil being discharged in part of rodless cavity enters the 4th by the pipeline of connection
Oil inlet, and be passed through in hydraulic oil storage device by the road by the 5th oil outlet, by the way that hydraulically-controlled one-way valve is arranged, in hydraulic pushing cover
It, will be former when the hydraulic fluid flow rate conveyed during hydraulic push rod rod chamber and rodless cavity push is inconsistent during contraction
It first needs all to flow back by the pipeline that the hydraulic oil of the first reversal valve branches to hydraulic control one-way valve direction, effectively prevent
Return flow is larger and causes to generate heat in reversal valve, reduces cooling installation and energy consumption.
In the above-described embodiments, the pipeline between the 5th oil outlet and the second oil outlet 305 and hydraulic oil storage device 101
It is connected, in certain embodiments, the 5th oil outlet can be by independent pipeline connection hydraulic oil storage device, by independently setting
The pipeline of simultaneously chain hydraulic oil storage device is set, so that passing through individual tubes by the hydraulic oil that the 5th oil outlet of hydraulically-controlled one-way valve is discharged
Road is transmitted back in hydraulic oil storage device, avoids sharing with the hydraulic oil return line of the first oil outlet to the second oil outlet direction
A piece reflux pipeline causes flow limited, influences the flow efficiency of hydraulic oil.
In the above-described embodiments, oil storage box structure can be selected in hydraulic oil storage device.
Referring to Fig. 1, further including hydraulic pump driving device in the above-described embodiments, hydraulic pump driving device selects motor
801, the power output shaft and hydraulic pump 201 of motor 801 are sequentially connected, for controlling the work or stopping of hydraulic pump.
Referring to Fig. 1, further including oil feed non-return valve 901 in the above-described embodiments, oil feed non-return valve 901 is set to hydraulic
On the pipeline for pumping 201 oil outlets, the hydraulic oil of running of hydraulic power oil direction and hydraulic pump 201 pumps direction in oil feed non-return valve 901
It is identical, prevent the hydraulic oil in hydraulic push rod drive system from generating adverse current.
Referring to Fig. 1, further including overflow valve 1001 in the above-described embodiments, one end of overflow valve 1001 is connected to hydraulic pump
The pipeline of 201 oil outlets, the other end are connected to the pipeline between the second oil outlet and hydraulic oil storage device, by the way that overflow is arranged
Valve, the hydraulic fluid pressure for avoiding hydraulic pump from pumping are greater than the pressure load that system can bear, by returning extra hydraulic oil
It flow in storage device, so that it is constant to reach maximum pressure load.
In the above-described embodiments, registration type pressure inductor can be selected in pressure inductor, passes through artificial observation pressure sensitive
The numerical value of device and then the mode of communicating for manually controlling the first reversal valve, the second reversal valve, in other embodiments, also optional electricity consumption
The electronic signal of sub- pressure inductor is connected to computer, carries out reversal valve mode of communicating by computer control electric control reversing valve
Control.
Here, the cavity in hydraulic push rod is separated simultaneously by piston to there is rod cavities and rodless cavity to be defined in text
It is divided into two parts, one end of piston rod is connected on piston, and the other end passes through the cavity of one of part and stretches out cavity
Outside, then a part of cavity for not accommodating piston rod is rodless cavity, wherein another part cavity for accommodating piston rod is known as having bar
Rodless cavity is also known as big chamber in existing industry slang by chamber, and rod chamber is known as small chamber.
In the above-described embodiments, the connection of hydraulic oil, hydraulic oil are carried out between all parts by common fluid pressure line
Connecting pipeline hydraulic hose or hydraulic hard tube can be used, using hose end screw thread or flanged joint and hard tube welding, cutting ferrule
Or the connection types such as flaring carry out the connection of pipeline.
In the above-described embodiments, two position four-way solenoid valves or three position four-way electromagnetic valve can be selected in reversal valve.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
The scope of patent protection of the utility model.Therefore, based on the innovative idea of the utility model, embodiment described herein is carried out
Change and modification or equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly
Or above technical scheme is used in other related technical areas indirectly, it is included in the patent protection model of the utility model
Within enclosing.
Claims (7)
1. a kind of hydraulic push rod drive system, which is characterized in that including hydraulic oil storage device, hydraulic pump, the first reversal valve,
Two reversal valves, pressure inductor and hydraulic push rod；
First reversal valve includes the first oil inlet, the first oil outlet, the second oil inlet and the second oil outlet, the first reversal valve
The first oil inlet and hydraulic oil storage device piping connection, the first oil outlet of the first reversal valve and the rodless cavity of hydraulic push rod
Piping connection, the second oil inlet of the first reversal valve and the rod chamber piping connection of hydraulic push rod, the second of the first reversal valve go out
Hydraulic fluid port and hydraulic oil storage device piping connection；
Second reversal valve is set on the pipeline between the rod chamber of hydraulic push rod and first the second oil inlet of reversal valve, packet
Include third oil inlet, third oil outlet and the 4th oil outlet, the rod chamber piping connection of third oil inlet and hydraulic push rod, third
Oil outlet and the second oil inlet piping connection；4th oil outlet passes through between pipeline and hydraulic push rod rodless cavity and the first oil outlet
Pipeline be connected；
The hydraulic pump is set on the pipeline between hydraulic oil storage device and the first oil inlet；
The pressure inductor is set on the pipeline of hydraulic pump oil outlet, for detecting the pressure of hydraulic pump output.
2. hydraulic push rod drive system according to claim 1, which is characterized in that it further include hydraulically-controlled one-way valve, the liquid
Pressing check valve includes the 4th oil inlet, the 5th oil outlet and on-off interface, the 4th oil inlet and hydraulic push rod rodless cavity and
Pipeline between first oil outlet is connected, the pipe between the 5th oil outlet and the second oil outlet and hydraulic oil storage device
Road is connected, and the on-off interface is connected with the pipeline between third oil outlet and the second oil inlet.
3. hydraulic push rod drive system according to claim 1, which is characterized in that the hydraulic oil storage device selects storage
Fuel tank.
4. hydraulic push rod drive system according to claim 1, which is characterized in that it further include overflow valve, the overflow valve
Pass through the oil inlet end and hydraulic pump oil outlet of pipeline connection hydraulic oil storage device.
5. hydraulic push rod drive system according to claim 1, which is characterized in that it further include hydraulic pump driving device, institute
Hydraulic pump driving device is stated to connect with hydraulic pump driving.
6. hydraulic push rod drive system according to claim 5, which is characterized in that the hydraulic pump driving device selects electricity
Machine.
7. hydraulic push rod drive system according to claim 1, which is characterized in that it further include oil feed non-return valve, the confession
Oily check valve is set on the pipeline between hydraulic pump and the first oil inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821619700.9U CN209012151U (en) | 2018-09-30 | 2018-09-30 | A kind of hydraulic push rod drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821619700.9U CN209012151U (en) | 2018-09-30 | 2018-09-30 | A kind of hydraulic push rod drive system |
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| Publication Number | Publication Date |
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| CN209012151U true CN209012151U (en) | 2019-06-21 |
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ID=66837660
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821619700.9U Active CN209012151U (en) | 2018-09-30 | 2018-09-30 | A kind of hydraulic push rod drive system |
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| CN (1) | CN209012151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253117A (en) * | 2018-09-30 | 2019-01-22 | 福建龙马环卫装备股份有限公司 | A kind of hydraulic push rod drive system |
-
2018
- 2018-09-30 CN CN201821619700.9U patent/CN209012151U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253117A (en) * | 2018-09-30 | 2019-01-22 | 福建龙马环卫装备股份有限公司 | A kind of hydraulic push rod drive system |
| CN109253117B (en) * | 2018-09-30 | 2024-02-13 | 福龙马集团股份有限公司 | Hydraulic push rod driving system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 364028 No. 42, Longteng South Road, Donghua community, Dongxiao Town, Xinluo District, Longyan City, Fujian Province Patentee after: Fulongma Group Co.,Ltd. Address before: 364000 Longyan Economic Development Zone, Longyan City, Fujian Province Patentee before: FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIPMENT Co.,Ltd. |
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| CP03 | Change of name, title or address |