CN208907017U - Hydraulic elevating platform or fork of forklift truck decline control system - Google Patents
Hydraulic elevating platform or fork of forklift truck decline control system Download PDFInfo
- Publication number
- CN208907017U CN208907017U CN201821445815.0U CN201821445815U CN208907017U CN 208907017 U CN208907017 U CN 208907017U CN 201821445815 U CN201821445815 U CN 201821445815U CN 208907017 U CN208907017 U CN 208907017U
- Authority
- CN
- China
- Prior art keywords
- oil
- return line
- solenoid valve
- hydraulic
- oil return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses hydraulic elevating platforms or fork of forklift truck to decline control system, including mutually matched platform, hydraulic cylinder, in-line, oil return line and oil sump；Platform connect to be driven by piston rod with hydraulic cylinder piston rod and go up and down, in-line one end connects oil sump, the oil suction chamber of other end connection hydraulic cylinder, hydraulic oil in oil sump enters oil suction chamber by in-line, oil return line one end connects oil sump, the oil back chamber of other end connection hydraulic cylinder, hydraulic oil in oil back chamber is flow back into oil sump by oil return line, oil return line includes oil return line one and oil return line two, oil return line one is connected to oil sump by solenoid valve one, oil return line two is connected to oil sump by solenoid valve two, solenoid valve two-way excess pressure relay control connection is closed by using electric circuit, control solenoid valve, system is automatically performed leakage passage selection, using safer.
Description
Technical field
The utility model relates to a kind of automatic control systems, especially control with a kind of hydraulic elevating platform or fork of forklift truck decline
System processed is related.
Background technique
In material flow industry, hydraulic elevating platform or fork truck are essential haulage equipments, and existing hydraulic lifting
The hydraulic system of platform or fork truck, decrease speed are controlled by operator's operation handle.The problem of this manual operation causes exists
In misoperation be easy to cause loading to shake, and there are security risks.
Utility model content
The purpose of the utility model is to overcome drawbacks described above present in background technique or problems, provide a kind of hydraulic liter
Drop platform or fork of forklift truck decline control system, are avoided that human error operates, and it is safe, steady, efficient to reach hydraulic platform
The purpose of operation.
To reach above-mentioned purpose, the utility model adopts the following technical solution:
Hydraulic elevating platform or fork of forklift truck decline control system, including mutually matched platform, hydraulic cylinder, oil inlet
Road, oil return line and oil sump；Wherein, platform connect to be driven by piston rod with hydraulic cylinder piston rod and go up and down, the connection of in-line one end
Oil sump, the other end connect the oil suction chamber of hydraulic cylinder, and the hydraulic oil in oil sump enters oil suction chamber, oil return line one end by in-line
Oil sump is connected, the other end connects the oil back chamber of hydraulic cylinder, and the hydraulic oil in oil back chamber is flow back into oil sump by oil return line, returns
Oil circuit includes oil return line one and oil return line two, and oil return line one is connected to oil sump by solenoid valve one, and oil return line two passes through solenoid valve
Two are connected to oil sump, solenoid valve two-way excess pressure relay control connection or closure.
Further, throttle valve is equipped at the nearly oil sump end of oil return line one.
The circuit connection of control system includes: the first circuit: positive pole connects solenoid valve one by decline command switch,
Solenoid valve be linked back again and again power cathode forming circuit；Second servo loop: positive pole connects solenoid valve two by decline command switch,
Solenoid valve two reconnects pressure switch, and pressure switch is connected to power cathode forming circuit.
From the above description of the utility model, it can be seen, compared with the existing technology, the utility model is by using electrical electricity
Road, controls solenoid valve, and system is automatically performed leakage passage selection, human error is avoided to operate.It is safe, flat to reach hydraulic platform
Surely, the purpose of efficient operation.Using double drainback passages, pressure switch is introduced, the oil of oil cylinder is incuded by pressure switch
Pressure, system automatically select drainback passage.Platform load-carrying is realized slowly, smoothly to decline.Loading is reduced to shake and to hydraulic pressure system
The impact force of system.Using safer.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for
For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the structural schematic diagram of the utility model.
Main appended drawing reference explanation:
Platform 1, hydraulic cylinder 2, in-line 3, oil return line 4 and oil sump 5, piston rod 21, oil suction chamber 22, oil back chamber 23, into
Oil circuit one end 31, the in-line other end 32, oil return line one end 41, the oil return line other end 42, oil return line 1, oil return line 2 44,
Solenoid valve 1, solenoid valve 27, pressure switch 8, throttle valve 9, power supply 10 decline command switch 101.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, described embodiment is the preferred embodiment of the utility model, and is not to be seen as to it
The exclusion of his embodiment.Based on the utility model embodiment, those skilled in the art are not before making creative work
Every other embodiment obtained is put, is fallen within the protection scope of the utility model.
In claims of the utility model, specification and above-mentioned attached drawing, unless otherwise specifically limited, term is such as used
" first ", " second " or " third " etc. is provided to distinguish different objects, be not use to describe a particular order.
In claims of the utility model, specification and above-mentioned attached drawing, unless otherwise specifically limited, for orientation
Word, such as using term " center ", " transverse direction ", " longitudinal direction ", "horizontal", " vertical ", "top", "bottom", "inner", "outside", "upper",
The indicating positions such as "lower", "front", "rear", "left", "right", " clockwise ", " counterclockwise " or positional relationship are based on shown in attached drawing
Orientation and positional relationship, and be merely for convenience of the narration present invention and simplify description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation or be constructed and operated in a specific orientation, so the limitation present invention can not be interpreted as
Specific protection scope.
In claims of the utility model, specification and above-mentioned attached drawing, unless otherwise specifically limited, term is such as used
" affixed " or " being fixedly connected ", should broadly understood, i.e., between the two without any company of displacement relation and relative rotation relationship
Connect mode, that is to say, that including being unremovably fixedly connected with, being removably secured connection, be linked together and by other dresses
It sets or element is fixedly connected.
In claims of the utility model, specification and above-mentioned attached drawing, such as using term " includes ", " having " and
Their deformation, it is intended that " including but not limited to ".
Referring to Fig. 1, hydraulic elevating platform or fork of forklift truck decline control system, including mutually matched platform 1, hydraulic oil
Cylinder 2, in-line 3, oil return line 4 and oil sump 5；Wherein, platform 1 connect to be driven by piston rod 21 with 2 piston rod 21 of hydraulic cylinder and rise
Drop, 3 one end 31 of in-line connect oil sump 5, and the other end 32 connects the oil suction chamber 22 of hydraulic cylinder 2, and the hydraulic oil in oil sump 5 passes through
In-line 3 enters oil suction chamber, and 4 one end 41 of oil return line connects oil sump 5, and the other end 42 connects the oil back chamber 23 of hydraulic cylinder, oil return
Hydraulic oil in chamber 23 is flow back into 5 in oil sump by oil return line 4, and oil return line 4 includes oil return line 1 and oil return line 2 44, oil return
Road 1 is connected to oil sump 5 by solenoid valve 1, and 2 44 solenoid valve 27 of oil return line is connected to oil sump 5, and solenoid valve 27 passes through pressure
The control of power relay 8 connection or closure.Throttle valve 9 is equipped at the nearly oil sump end of oil return line 1.
The circuit connection of control system includes: the first circuit: 10 anode of power supply connects electromagnetism by decline command switch 101
Valve 1, solenoid valve 1 be linked back again 10 cathode of power supply forming circuit；Second servo loop: 10 anode of power supply passes through decline command switch
101 connection solenoid valves 27, solenoid valve 27 reconnect pressure switch 8, and pressure switch 8 is connected to 10 cathode of power supply and is formed
Circuit.
When work, when hydraulic platform is lightly loaded or is unloaded, the oil pressure of hydraulic cylinder is lower, pressure switch closure, operator
Decline command switch is pressed, solenoid valve one and solenoid valve two are powered and open simultaneously, and hydraulic oil is flowed to by two passes in oil cylinder
Oil sump, flow is bigger, then platform or pallet fork decrease speed are fast.
When overloaded, the oil pressure of oil cylinder is big for platform or pallet fork, when oil pressure is greater than the preset value of pressure switch, pressure relay
Device disconnects.Decline command switch is pressed, only solenoid valve one is powered and opens, and in-oil cylinder hydraulic oil is through throttle valve (throttle valve
Flow can be presetting) flow back to oil sump, flow is smaller, then platform or pallet fork decrease speed are slow.
The utility model this patent introduces pressure switch using double drainback passages, incudes oil by pressure switch
The oil pressure of cylinder, system automatically select drainback passage.Platform load-carrying is realized slowly, smoothly to decline.Reduce loading shake and it is right
The impact force of hydraulic system.Using safer.Unloaded or underloading decrease speed is fast, improves service efficiency.Operating in a key expands
It is big to use crowd.By using electric circuit, solenoid valve is controlled, system is automatically performed leakage passage selection, avoids manually losing
Maloperation.Achieve the purpose that hydraulic platform safety, steady, efficient operation.
The description of description above and embodiment for explaining scope of protection of the utility model, but is not constituted to this reality
With the restriction of novel protected range.By the enlightenment of the utility model or above-described embodiment, those of ordinary skill in the art are combined
Common knowledge, the ordinary technical knowledge of this field and/or the prior art pass through logical analysis, reasoning or limited examination
Test it is available to the modification of the utility model embodiment or in which a part of technical characteristic, equivalent replacement or other improvements,
It should be included within the scope of protection of this utility model.
Claims (3)
1. hydraulic elevating platform or fork of forklift truck decline control system, it is characterised in that: including mutually matched platform, hydraulic oil
Cylinder, in-line, oil return line and oil sump；Wherein, platform connect to be driven by piston rod with hydraulic cylinder piston rod and go up and down, in-line one
End connection oil sump, the other end connect the oil suction chamber of hydraulic cylinder, and the hydraulic oil in oil sump enters oil suction chamber, oil return by in-line
Road one end connects oil sump, and the other end connects the oil back chamber of hydraulic cylinder, and the hydraulic oil in oil back chamber flow back into oil by oil return line
Chi Zhong, oil return line include oil return line one and oil return line two, and oil return line one is connected to oil sump by solenoid valve one, and oil return line two passes through
Solenoid valve two is connected to oil sump, solenoid valve two-way excess pressure relay control connection or closure.
2. hydraulic elevating platform as described in claim 1 or fork of forklift truck decline control system, it is characterised in that: in oil return line
One nearly oil sump end is equipped with throttle valve.
3. hydraulic elevating platform as claimed in claim 1 or 2 or fork of forklift truck decline control system, it is characterised in that: control
The circuit connection of system includes: the first circuit: positive pole connects solenoid valve one by decline command switch, and solenoid valve connects again and again
Return power cathode forming circuit；Second servo loop: positive pole connects solenoid valve two by decline command switch, and solenoid valve two connects again
Pressure switch is connect, pressure switch is connected to power cathode forming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821445815.0U CN208907017U (en) | 2018-09-05 | 2018-09-05 | Hydraulic elevating platform or fork of forklift truck decline control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821445815.0U CN208907017U (en) | 2018-09-05 | 2018-09-05 | Hydraulic elevating platform or fork of forklift truck decline control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208907017U true CN208907017U (en) | 2019-05-28 |
Family
ID=66613395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821445815.0U Expired - Fee Related CN208907017U (en) | 2018-09-05 | 2018-09-05 | Hydraulic elevating platform or fork of forklift truck decline control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208907017U (en) |
-
2018
- 2018-09-05 CN CN201821445815.0U patent/CN208907017U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190528 Termination date: 20210905 |