CN105605001B - A kind of enclosed elevator hydraulic safe valve group - Google Patents
A kind of enclosed elevator hydraulic safe valve group Download PDFInfo
- Publication number
- CN105605001B CN105605001B CN201610152815.0A CN201610152815A CN105605001B CN 105605001 B CN105605001 B CN 105605001B CN 201610152815 A CN201610152815 A CN 201610152815A CN 105605001 B CN105605001 B CN 105605001B
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- Prior art keywords
- valve
- motor
- logical
- pressure side
- port
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
Abstract
The invention discloses a kind of enclosed elevator hydraulic safe valve group; system composition is simple, the safeguard protection of the elevator winch of enclosed pump driving can be achieved, equivalent to the function of balanced valve in open system; also correspond to by hydraulic valve bank into " brake ", add one of safeguard protection to enclosed elevator.Its technical scheme is：Using the keying feature of logical valve, using keying of the pressure of the control mouth of pilot operated directional control valve control logic valve so as to control logic valve, after elevator stops, the on high-tension side oil circuit of hoist motor is blocked using logical valve.And check valve feed circuit is set in motor low-pressure side, after brake is opened, gib head gives motor low-pressure side repairing if slow decline by feed circuit, the risk for preventing low-pressure side oil from falling suddenly by gib head after motor Leakage Energy light leak.
Description
Technical field
The present invention relates to Fluid Transmission and Control technology, more particularly to a kind of enclosed elevator hydraulic safe valve group.
Background technology
The crane of existing use enclosed pump driving, if breaking down or when pipeline leakage needs maintenance, brake is embraced
Extremely, at this moment brake bears very big power, and there was only this one of brake in safeguard protection, because without balance in open system
The protection of valve, so if being opened accidentally brake or misfunctioning of brake is not braked after dead halt, gib head can fall, and cause
Very big security risk.
The content of the invention
The brief overview of one or more aspects given below is to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and it is also non-to be both not intended to identify the key or decisive key element of all aspects
Attempt to define the scope in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts think the sequence of more detailed description given later.
It is an object of the invention to solve the above problems, there is provided a kind of enclosed elevator hydraulic safe valve group, system composition
Simply, the safeguard protection of the elevator winch of enclosed pump driving can be achieved, equivalent to the function of balanced valve in open system, also quite
In by hydraulic valve bank into " brake ", add one of safeguard protection to enclosed elevator.
The technical scheme is that：Present invention is disclosed a kind of enclosed elevator hydraulic safe valve group, valve group external connection
Include the first end connection horse of hydraulic control switching valve, damping, logical valve, overflow valve, check valve, wherein overflow valve in motor, valve group
The high-pressure side reached, the second end of overflow valve connects the low-pressure side of motor, and the first end of check valve connects the second end of overflow valve, single
The repairing oil circuit of motor low-pressure side repairing is connected to the second end of valve, the first port of logical valve connects enclosed pump oil source,
The second port of logical valve connects the first end of overflow valve, and the 3rd port of logical valve is by damping connection pilot operated directional control valve.
According to an embodiment of the enclosed elevator hydraulic safe valve group of the present invention, the first port of logical valve is entered as raising
Hydraulic fluid port, the second port of logical valve and the high-pressure side of motor are connected, and the control pressure of the 3rd port of logical valve derives from logic
The second port of valve, to ensure that the No leakage of first port of logical valve is closed.
According to an embodiment of the enclosed elevator hydraulic safe valve group of the present invention, check valve is located at the low-pressure side of motor, structure
Into check valve feed circuit, the low-pressure side of motor obtains repairing by check valve feed circuit.
According to an embodiment of the enclosed elevator hydraulic safe valve group of the present invention, patrolled by pilot operated directional control valve and damping control
The pressure of the 3rd port of valve is collected, with the keying of control logic valve, after elevator stopping, logical valve block hoist motor high-pressure side
Oil circuit.
According to an embodiment of the enclosed elevator hydraulic safe valve group of the present invention, logical valve is used as balanced valve, or
Used as hydraulic braking.
Present invention contrast prior art has following beneficial effect：The present invention is applied to the hydraulic pressure system using the driving of enclosed pump
System, valve group is equivalent to the balanced valve function in open system.Valve group has the function of brake, even if winch stop assembly is opened,
Gib head will not also fall suddenly.By appropriate connection, gib head after brake is opened can be achieved and slowly declines or does not decline.
Brief description of the drawings
Fig. 1 shows the structure chart of the preferred embodiment of the enclosed elevator hydraulic safe valve group of the present invention.
Embodiment
After the detailed description of embodiment of the disclosure is read in conjunction with the following drawings, it better understood when the present invention's
Features described above and advantage.In the accompanying drawings, each component is not necessarily drawn to scale, and with similar correlation properties or feature
Component may have same or like reference.
Fig. 1 shows the structure of the preferred embodiment of the enclosed elevator hydraulic safe valve group of the present invention.Fig. 1 is referred to, this
Include hydraulic control switching valve 1, damping 2, logical valve in the enclosed elevator hydraulic safe valve group external connection motor 6 of embodiment, valve group
3rd, overflow valve 4, check valve 5.The B1 mouths of valve group connect the low-pressure side of motor 6, A1 mouthfuls connect motor 6 high-pressure side.The A mouths and B of valve group
Mouth connects enclosed pump oil source, and S mouthful connect repairing oil circuit for motor low-pressure side repairing, T mouthfuls of connected tanks, and X mouthfuls connect control oil circuit.Overflow valve
4 first end connects the high-pressure side of motor 6, and the second end of overflow valve 4 connects the low-pressure side of motor 6.The first end of check valve 5 connects
The second end of overflow valve 4 is connect, the second end of check valve 5 is connected to the repairing oil circuit S of motor low-pressure side repairing.Logical valve 3
First port LA connection enclosed pump oil source A, the first end of the second port LB connections overflow valve 4 of logical valve 3, the of logical valve 3
Three port xs 2 connect pilot operated directional control valve 1 by damping 2.
The design principle of the valve group of the present embodiment is as follows.Using the keying feature of logical valve 3, controlled using pilot operated directional control valve 1
The pressure of the control mouth (the 3rd port x 2) of logical valve 3 processed after elevator stops, utilizing logic so as to the keying of control logic valve 3
Valve 3 blocks the on high-tension side oil circuit of hoist motor.And the feed circuit of check valve 5 is set in motor low-pressure side, when opening brake
Afterwards, gib head gives motor low-pressure side repairing if slow decline by feed circuit, prevents low-pressure side oil from leaking oil leakage by motor
The risk that gib head falls suddenly after light.Function of the logical valve 3 by appropriate connection as balanced valve in open system is used,
Braking function (adding one of safety arrestment to system) is played equivalent to liquid braking device, while alleviating the burden of brake.
When elevator winch is out of service, the control oil sources off-load of X mouthfuls of valve group.The LA mouths of logical valve 3 are used as raising oil-feed
Mouthful, LB mouthfuls are connected with motor high-pressure side, and the control mouth X2 of logical valve 3 control pressure derives from LB mouthfuls.Now LA mouthfuls to LB mouthfuls
One-way conduction, LB mouthfuls to LA mouthfuls No leakages are closed.
It is for so that any person skilled in the art all can make or use this public affairs to provide of this disclosure be previously described
Open.Various modifications of this disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to spirit or scope of other variants without departing from the disclosure.Thus, the disclosure is not intended to be limited
Due to example described herein and design, but it should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (3)
1. include hydraulic control in a kind of enclosed elevator hydraulic safe valve group, it is characterised in that valve group external connection motor (6), valve group
The first end connection motor of switching valve (1), damping (2), logical valve (3), overflow valve (4), check valve (5), wherein overflow valve (4)
(6) high-pressure side, the low-pressure side of the second end connection motor (6) of overflow valve (4), the first end connection overflow valve of check valve (5)
(4) the second end, the second end of check valve (5) is connected to the repairing oil circuit of motor low-pressure side repairing, the first of logical valve (3)
Port connection enclosed pump oil source, the first end of the second port connection overflow valve (4) of logical valve (3), the 3rd end of logical valve (3)
Mouthful by damp (2) connect pilot operated directional control valve (1), the first port of logical valve (3) as raising oil inlet, logical valve (3)
Second port is connected with the high-pressure side of motor (6), and the control pressure of the 3rd port of logical valve (3) is from logical valve (3)
Second port, to ensure that the No leakage of first port of logical valve (3) is closed, is controlled by pilot operated directional control valve (1) and damping (2)
The pressure of 3rd port of logical valve (3), with the keying of control logic valve (3), after elevator stopping, logical valve (3) block volume
Raise the on high-tension side oil circuit of motor.
2. enclosed elevator hydraulic safe valve group according to claim 1, it is characterised in that check valve (5) is located at motor (6)
Low-pressure side, constitute check valve feed circuit, the low-pressure side of motor (6) passes through check valve feed circuit and obtains repairing.
3. enclosed elevator hydraulic safe valve group according to any one of claim 1 to 2, it is characterised in that logical valve (3)
Use, or used as hydraulic braking as balanced valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152815.0A CN105605001B (en) | 2016-03-17 | 2016-03-17 | A kind of enclosed elevator hydraulic safe valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152815.0A CN105605001B (en) | 2016-03-17 | 2016-03-17 | A kind of enclosed elevator hydraulic safe valve group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105605001A CN105605001A (en) | 2016-05-25 |
| CN105605001B true CN105605001B (en) | 2017-08-04 |
Family
ID=55985227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610152815.0A Active CN105605001B (en) | 2016-03-17 | 2016-03-17 | A kind of enclosed elevator hydraulic safe valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105605001B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676316A (en) * | 2017-11-07 | 2018-02-09 | 燕山大学 | A kind of braking control system and control method applied to hydraulic open system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3919399B2 (en) * | 1998-11-25 | 2007-05-23 | カヤバ工業株式会社 | Hydraulic control circuit |
| JP3989640B2 (en) * | 1998-12-22 | 2007-10-10 | コベルコ建機株式会社 | Return circuit of hydraulic circuit |
| CN101537984B (en) * | 2009-04-21 | 2011-04-13 | 上海三一科技有限公司 | Hoist motor closed type hydraulic system for preventing pipelines from bursting and control method thereof |
| CN102900718A (en) * | 2012-09-28 | 2013-01-30 | 徐工集团工程机械股份有限公司 | Changeover valve device for hydraulic system and hydraulic system for crawler crane |
| CN104477798B (en) * | 2014-12-10 | 2016-08-17 | 中联重科股份有限公司 | The principal arm luffing control system of crane and crane |
| CN205401279U (en) * | 2016-03-17 | 2016-07-27 | 上海振华重工(集团)股份有限公司 | Closed hoist deadweight safety valve group |
-
2016
- 2016-03-17 CN CN201610152815.0A patent/CN105605001B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105605001A (en) | 2016-05-25 |
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