CN212717440U - Balance valve integrating functions of winch brake - Google Patents
Balance valve integrating functions of winch brake Download PDFInfo
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- CN212717440U CN212717440U CN202021334550.4U CN202021334550U CN212717440U CN 212717440 U CN212717440 U CN 212717440U CN 202021334550 U CN202021334550 U CN 202021334550U CN 212717440 U CN212717440 U CN 212717440U
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- damper
- end cover
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Abstract
The utility model discloses a balanced valve of integrated hoist stopper function, including balanced valve body subassembly, be fixed with the control end cover on the balanced valve body subassembly, the control end cover includes balanced valve control circuit and hoist stopper control valve, and balanced valve control circuit is by first filter screen, the screw thread is stifled, first check valve, first damping and second damping are constituteed, hoist stopper control valve shuttle valve, the overflow relief pressure valve, fifth damping and second filter screen are constituteed, and balanced valve body subassembly is by the balanced valve, the third damping, fourth damping and second check valve are constituteed. The utility model provides a pair of balanced valve of integrated hoist stopper function can be integrated in the control end cover of balanced valve with hoist stopper control valve, reduces the use of system's pipeline, reduce cost with the fault point that has reduced the product, can avoid the relief valve back pressure too high and lead to the stopper damage problem simultaneously.
Description
Technical Field
The utility model relates to a balanced valve of integrated hoist stopper function belongs to hoisting machinery technical field.
Background
The brake control valve and the balance valve are key hydraulic elements of engineering machinery such as an automobile crane, a crawler crane and the like. The winch brake control valve is used for controlling the opening and closing of the winch brake, when the winch ascends or descends, the winch brake control valve controls the opening of the winch brake, and when the winch ascends or descends and stops, the winch brake control valve controls the closing of the winch brake, so that the position of a heavy object is kept; the balance valve is a key hydraulic element for controlling the stable falling of the weight, and when the weight falls, the weight is balanced by the balance valve, so that the stable falling of the weight is realized.
At present, a brake control valve and a balance valve for controlling the hoisting and landing of a crane are separately arranged, the balance valve, the hoisting brake control valve and a hoisting brake are connected through pipelines, and the pipelines are complex in connection, high in cost, multiple in fault point and inconvenient to maintain. In addition, the pressure reducing valve in the existing winch brake control valve adopts a two-way pressure reducing valve, and if the leakage amount of the pressure reducing valve is small, the problem that the brake is damaged due to overhigh pressure after the pressure reducing valve easily occurs.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide one kind can be integrated in the control end cover of balance valve with hoist brake control valve, reduce the use of system's pipeline, reduce cost with the fault point that has reduced the product, can avoid the relief valve back pressure too high and lead to the balanced valve of integrated hoist brake function of stopper damage problem simultaneously.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a balance valve integrating functions of a winch brake comprises a balance valve body assembly, wherein a control end cover is fixed on the balance valve body assembly and comprises a balance valve control loop and a winch brake control valve, the balance valve control loop comprises a first one-way valve, a first damper, a second damper and a threaded plug, one end of the first one-way valve, one end of the first damper and one end of the threaded plug are connected with a K port of the control end cover, and the other end of the first one-way valve and the other end of the first damper are connected together and are connected with one end of the second damper; the winch brake control valve comprises a shuttle valve, one end of the shuttle valve is connected with a K port of a control end cover, the other end of the shuttle valve is connected with an A port of a balance valve, the shuttle valve is connected with a Br port of the control end cover through an overflow reducing valve, the Br port of the control end cover is connected with a winch brake, one end of a fifth damper is connected with a leakage port of the overflow reducing valve together and is connected with a T port of the control end cover to an oil tank, and the other end of the fifth damper is connected between the Br port of the control end cover and the overflow reducing valve; the balance valve body assembly comprises a balance valve, one end of the balance valve is connected with the motor through a port B of the balance valve, the other end of the balance valve is connected with the control valve through a port A of the balance valve, a control cavity of the balance valve is connected with the other end of the second damper, a spring cavity of the balance valve is respectively connected with one end of a third damper and one end of a second one-way valve, and the other end of the third damper and a fourth damper are connected in series and then connected with the other end of the second one-way valve, the port A of the balance valve and the port L of the balance valve.
And the control end cover is fixed on the balance valve body assembly through bolts.
The thread plug is replaced by a bypass damper.
And the fifth damping is replaced by a two-position three-way reversing valve.
The balance valve control loop comprises a first filter screen, and the first filter screen is arranged between the opening of the control end cover K and the shuttle valve, the first one-way valve, the first damper and the threaded plug.
The winch brake control valve comprises a second filter screen, and the second filter screen is arranged between the shuttle valve and the port A of the balance valve.
The utility model has the advantages that: the utility model provides a balanced valve of integrated hoist stopper function, the shuttle valve, overflow relief pressure valve, fifth damping, the second filter screen that will constitute hoist stopper control valve are integrated in the control end cover of balanced valve, connect the oil circuit through punching in the end cover, have reduced the use of system's pipeline, have simplified the pipe connection, and the cost is reduced has reduced the fault point of product; the overflow pressure reducing valve is adopted, when the pressure behind the overflow pressure reducing valve is increased to a set value, the pressure reducing overflow valve overflows, the pressure is not increased any more, and is maintained at a fixed pressure, so that the damage of a hoisting brake caused by overhigh pressure is avoided; set up first filter screen 2 and second filter screen 8 at the K mouth of balanced valve control end cover and balanced valve A mouth, filter the impurity in the fluid, avoid blockking up the jamming of damping orifice or other moving parts.
Drawings
Fig. 1 is a schematic structural view of a balance valve of an integrated winch brake control valve of the present invention;
fig. 2 is a schematic structural diagram of a method for replacing a balance valve of an integrated winch brake control valve according to the present invention;
fig. 3 is a schematic structural view of the integrated winch brake control valve according to the present invention;
fig. 4 is the utility model relates to a left side view structure schematic diagram of integrated hoist brake control valve.
The reference numbers in the figures are as follows: 1-an overflow relief valve; 2-a first sieve; 3-thread plugging; 4-a first one-way valve; 5-first damping; 6-shuttle valve; 7-second damping; 8-a second filter screen; 9-a balancing valve; 10-third damping; 11-fourth damping; 12-a second one-way valve; 13-a two-position three-way reversing valve; 14-a balanced valve body assembly; 15-control end cap.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and the following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Detailed description of the preferred embodiment 1
As shown in fig. 3 and 4, the utility model provides an integrated hoist brake control valve, including balanced valve body subassembly 14 and the control end cover 15 of integrated hoist brake control valve, the control end cover 15 of integrated hoist brake control valve passes through the bolt fastening on balanced valve body subassembly 14. As shown in fig. 1, the control end cap of the integrated winch brake control valve consists of a balance valve control loop and a winch brake control valve. Wherein the balance valve control loop is composed of a first filter screen 2, a threaded plug 3, a first one-way valve 4, a first damper 5 and a second damper 7.
The control valve of the hoisting brake consists of a shuttle valve 6, an overflow reducing valve 1, a fifth damper 13 and a second filter screen 8. The utility model discloses to constitute shuttle valve 6, overflow relief pressure valve 1, fifth damping 13, the integration of second filter screen 8 of hoist brake control valve in the control end cover of balance valve, through punching the connection oil circuit in the end cover, reduced the use of system's pipeline, simplified the tube coupling, the cost is reduced has reduced the fault point of product. The utility model discloses well first filter screen 2 and second filter screen 8's setting can filter the impurity in the fluid, avoids blockking up the jamming of damping hole or other motion spare parts.
The control pressure from the falling of the winch is connected with a port K of the control end cover, is connected with one end of the first check valve 4, the first damper 5 and the threaded plug 3 through the first filter screen 2, and the other ends of the first check valve 4 and the first damper 5 are connected together and are connected to the balance valve 9 through the second damper 7. The control pressure from the falling of the winch is connected to the two ends of the shuttle valve 6 through the first filter screen and the pressure from the opening A of the balance valve through the second filter screen 8, the maximum pressure is screened out through the shuttle valve 6 and then flows through the overflow reducing valve 1 to the opening Br of the control end cover, when the pressure behind the overflow reducing valve 1 is increased to a set value, the pressure is reduced and overflows through the overflow valve, the pressure is not increased any more, the pressure is maintained at a fixed pressure, and the damage of the winch brake caused by overhigh pressure is avoided. The utility model discloses opening and closing at the control circuit of balanced valve adoption one-way damping control balanced valve realizes opening and closing steadily of balanced valve fast. When the balance valve needs to be opened, the control pressure from the control end cover K port, the first filter screen 2, the first damper 5 and the second damper 7 to the control cavity of the balance valve, and the one-way valve realizes the slow and stable opening of the balance valve due to the damping effect of the first damper 5 and the second damper 7; when the balance valve is closed, oil in the control cavity of the balance valve rapidly returns through the second damper 7, the first one-way valve 4 and the first filter screen 2, so that the balance valve is rapidly closed.
The Br port of the control end cover is connected with a winch brake, and the fifth damper 13 is connected with a leakage port of the overflow reducing valve 1 together to the T port of the control end cover to be connected with an oil tank. The utility model adopts the fifth damping 13 to control the pressure establishment and the pressure release of the winch brake, when the winch rises or falls, the pressure from the K port or the A port of the control end cover is screened out by the shuttle valve 6, the maximum pressure is communicated with the Br port through the overflow pressure reducing valve 1 and the fifth damping 13, and the winch brake is controlled to be opened; when the port K of the control end cover and the port A of the balance valve have no pressure, the pressure in the winch brake returns to the oil tank at the port T through the port Br of the control end cover and the fifth damper 13. The utility model discloses well adoption bypass damping control hoist stopper has realized opening the stopper when having control oil, and the automatic draining of stopper when not having control oil.
The balance valve body assembly comprises a balance valve 9, a third damper 10, a fourth damper 11 and a second one-way valve 12. One end of the balance valve 9 is connected with the motor through a port B, the other end of the balance valve is connected with the control valve through a port A, and a control cavity of the balance valve 9 is connected with the second damper 7; the spring cavity of the balance valve 9 is respectively connected with a third damper 10 and a second one-way valve 12, and the third damper 10 and a fourth damper 11 are connected in series and then connected with the second one-way valve 12, a port A of the balance valve and a port L of the balance valve. The utility model discloses set up the one-way damping return circuit that comprises third damping 10, fourth damping 11, second check valve 12 in balanced valve 9 spring chamber, balanced valve 9 spring chamber fluid passes through third damping 10, fourth damping 11 and balanced valve A mouth or balanced valve L mouth intercommunication when the balanced valve is opened, because the existence of one-way damping, overshoot when having avoided the balanced valve to open, simultaneously because adopt three damping 10, four damping 11 two damping series connections reach a great damping effect, avoid the jam that the damping aperture is too little to lead to; when the balance valve is closed, oil from the port A or the port L of the balance valve enters a spring cavity of the balance valve 9 through the second check valve 12, and the balance valve can be closed quickly.
Specific example 2
As shown in fig. 2, this embodiment is the same as embodiment 1, except that the threaded plug 3 in the control end cap can be replaced by a damper, the control pressure returns to the tank through the T port of the control end cap via the first filter screen 2 and the replaced damper, and the fluctuation of the balance valve caused by the fluctuation of the control pressure is filtered by the bypass damper, so that the stability of the balance valve is improved. In addition, the fifth damping 13 is replaced by a two-position three-way reversing valve to control the winch brake, so that the brake is opened when control oil exists, and the brake automatically drains oil when the control oil does not exist.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a balanced valve of integrated hoist brake function which characterized in that: the balance valve comprises a balance valve body assembly (14), a control end cover (15) is fixed on the balance valve body assembly (14), the control end cover (15) comprises a balance valve control loop and a winch brake control valve, the balance valve control loop comprises a first one-way valve (4), a first damper (5), a second damper (7) and a threaded plug (3), one end of the first one-way valve (4), one end of the first damper (5) and one end of the threaded plug (3) are connected with a K port of the control end cover, and the other end of the first one-way valve (4) and the other end of the first damper (5) are connected together and are connected with one end of the second damper (7); the winch brake control valve comprises a shuttle valve (6), one end of the shuttle valve (6) is connected with a K port of a control end cover, the other end of the shuttle valve (6) is connected with an A port of a balance valve, the shuttle valve (6) is connected with a Br port of the control end cover through an overflow reducing valve (1), the Br port of the control end cover is connected with a winch brake, one end of a fifth damper (13) is connected with a leakage port of the overflow reducing valve (1) together and is connected with an oil receiving tank of the T port of the control end cover, and the other end of the fifth damper (13) is connected between the Br port of the control end cover and the overflow reducing valve (1); balanced valve body subassembly (14) are including balanced valve (9), balanced valve (9) one end is passed through balanced valve B mouth and is connected with the motor, and the other end passes through balanced valve A mouth and is connected with the control valve, the control chamber of balanced valve (9) is connected with the other end of second damping (7), the spring chamber of balanced valve (9) is connected the one end of third damping (10) and second check valve (12) respectively, the other end of third damping (10) and fourth damping (11) establish ties after with second check valve (12) the other end balanced valve A mouth and balanced valve L mouth are connected.
2. The balanced valve integrated with the hoisting brake function as recited in claim 1, wherein: and the control end cover (15) is fixed on the balance valve body assembly (14) through bolts.
3. The balanced valve integrated with the hoisting brake function as recited in claim 1, wherein: the thread plug (3) is replaced by a bypass damper.
4. The balanced valve integrated with the hoisting brake function as recited in claim 1, wherein: and the fifth damper (13) is replaced by a two-position three-way reversing valve.
5. The balanced valve integrated with the hoisting brake function as recited in claim 1, wherein: the balance valve control loop comprises a first filter screen (2), and the first filter screen (2) is arranged between the opening of the control end cover K and the shuttle valve (6), the first one-way valve (4), the first damper (5) and the thread plug (3).
6. The balanced valve integrated with the hoisting brake function as recited in claim 1, wherein: the winch brake control valve comprises a second filter screen (8), and the second filter screen (8) is arranged between the shuttle valve (6) and an opening A of the balance valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021334550.4U CN212717440U (en) | 2020-07-09 | 2020-07-09 | Balance valve integrating functions of winch brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021334550.4U CN212717440U (en) | 2020-07-09 | 2020-07-09 | Balance valve integrating functions of winch brake |
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| Publication Number | Publication Date |
|---|---|
| CN212717440U true CN212717440U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021334550.4U Active CN212717440U (en) | 2020-07-09 | 2020-07-09 | Balance valve integrating functions of winch brake |
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| CN (1) | CN212717440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321071A (en) * | 2021-11-25 | 2022-04-12 | 江苏汇智高端工程机械创新中心有限公司 | Adjustable load pressure compensation balance valve end cover and balance valve |
-
2020
- 2020-07-09 CN CN202021334550.4U patent/CN212717440U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321071A (en) * | 2021-11-25 | 2022-04-12 | 江苏汇智高端工程机械创新中心有限公司 | Adjustable load pressure compensation balance valve end cover and balance valve |
| CN114321071B (en) * | 2021-11-25 | 2024-04-02 | 江苏汇智高端工程机械创新中心有限公司 | Adjustable load pressure compensation balance valve end cover and balance valve |
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