CN203754275U - Emergency release device for crane - Google Patents
Emergency release device for crane Download PDFInfo
- Publication number
- CN203754275U CN203754275U CN201420003840.9U CN201420003840U CN203754275U CN 203754275 U CN203754275 U CN 203754275U CN 201420003840 U CN201420003840 U CN 201420003840U CN 203754275 U CN203754275 U CN 203754275U
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- CN
- China
- Prior art keywords
- emergency release
- release device
- hydraulic motor
- discharge conduit
- manual pump
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- 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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- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
- Jib Cranes (AREA)
Abstract
The utility model discloses an emergency release device for a crane. The emergency release device comprises a manual pump, a first throttle valve and a second throttle valve, wherein an oil outlet of the manual pump is communicated with a rod cavity of a brake cylinder through the first throttle valve; the second throttle valve is arranged on a pipeline between the first throttle valve and a brake control port X in a main oil-way of a hydraulic motor; the emergency release device also comprises an emergency release pipeline; two ends of the emergency release pipeline are respectively communicated with a first working port and a second working port of the hydraulic motor; a control valve for controlling on/off of the emergency release pipeline is arranged on the emergency release pipeline. The emergency release pipeline is arranged on the emergency release device between two working ports of the hydraulic motor, the control valve is arranged on the emergency release pipeline, two working ports of the motor can be directly connected through the control valve when manual emergency release needs to be carried out, and a pressure measuring line does not need to be manually connected.
Description
Technical field
The utility model relates to hoisting crane field, particularly a kind of emergency release device for hoisting crane.
Background technology
The action that hoists of goliath realizes by fluid motor-driven reductor.In order to guarantee safety, brake gear is set on hoisting crane, and brake gear drives by brake oil cylinder, thereby pin the turning cylinder of HM Hydraulic Motor, when action that the handle of power system normal operation and hoisting crane rises, declines, brake oil cylinder is in open mode; When the process medium power system of handle in meta or crane for hoisting goods breaks down, brake gear braking, the turning cylinder of HM Hydraulic Motor can not rotate, and the goods of slinging is hung in the air.For fear of hoisting crane, because the long-time weight that hangs affects its service life, need to and hang skyborne goods by jib and promptly release.
In realizing process of the present utility model, designer finds that prior art at least exists following problem:
Conventional urgent method for releasing is, with manual pump, brake oil cylinder is adjusted to open mode, then with a pressure measurement line, be communicated with two pressure taps at two actuator port places of motor respectively, make fluid can form a loop that is communicated with two actuator ports of HM Hydraulic Motor, thereby realize the urgent releasing operation of hoisting crane, but, the operating process that pressure measurement line is installed is complicated, for realizing urgent release movement, has increased inconvenience.Meanwhile, because pressure measurement spool road is very thin, its circulating capacity is restricted because internal diameter is little, and the speed that goods is transferred is slower, inefficiency.
Utility model content
In order to solve, the operating process complexity of pressure measurement line and the inefficient problem that goods is transferred are installed in prior art, the utility model embodiment provides a kind of emergency release device for hoisting crane.Described technical scheme is as follows:
The utility model provides a kind of emergency release device for hoisting crane, described hoisting crane comprises HM Hydraulic Motor, for the brake gear that described HM Hydraulic Motor is braked and the brake oil cylinder that drives described brake gear, described emergency release device comprises: manual pump, first throttle valve and the second flow regulating valve, the oil outlet of described manual pump is communicated with the rod chamber of described brake oil cylinder by first throttle valve, described the second flow regulating valve is arranged on the pipeline between the brake control port in the working connection of described first throttle valve and described HM Hydraulic Motor, described emergency release device also comprises urgent discharge conduit, the two ends of described urgent discharge conduit are communicated with the first actuator port and second actuator port of described HM Hydraulic Motor respectively, described urgent discharge conduit is provided with for controlling the control cock of described urgent discharge conduit conducting and cut-off.
Further, the internal diameter of described urgent discharge conduit is 3mm～9mm.
Preferably, the internal diameter of described urgent discharge conduit is 5mm.
Particularly, described control cock is flow regulating valve.
Particularly, be provided with balance cock assembly in described working connection, described balance cock assembly is balance cock integrated package, and urgent discharge conduit and described control cock are integrated on described balance cock integrated package.
Particularly, the oil outlet of described manual pump is provided with check valve, and the oil inlet of described check valve is communicated with the oil outlet of described manual pump, and the oil outlet of described check valve is communicated with the oil inlet of described first throttle valve.
Particularly, on the chargine line of described manual pump, be provided with the first filter.
Particularly, on the fuel-displaced pipeline of described manual pump, be provided with compression indicator.
Alternatively, described HM Hydraulic Motor is described hoisting crane hoists, the HM Hydraulic Motor in luffing or swing type mechanism.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: by urgent discharge conduit being installed between two actuator ports of HM Hydraulic Motor, and in urgent discharge conduit, control cock is set, when needs carry out manual-operated emergent release, can pass through two working holes of the direct conducting motor of control cock, needn't manually connect pressure measurement line, simplified the operating process of urgent release, and the internal diameter of urgent discharge conduit is much larger than the internal diameter of pressure measurement line, the circulating capacity of emergency release device has been increased, improved speed and efficiency that goods is transferred.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the emergency release device that provides of the utility model embodiment.
In figure: 1-manual pump, 2-first throttle valve, 3-the second flow regulating valve, 4-balance cock assembly, 5-HM Hydraulic Motor, 5A-the first actuator port, 5B-the second actuator port, 6-brake oil cylinder, the urgent discharge conduit of 7-, 8-flow regulating valve, 9-check valve, 10-the first filter, 11-compression indicator, the X-control port of braking.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment
The utility model embodiment provides a kind of emergency release device for hoisting crane, as shown in Figure 1, this hoisting crane comprises HM Hydraulic Motor 5, for the brake gear that HM Hydraulic Motor 5 is braked and the brake oil cylinder 6 that drives brake gear, this emergency release device comprises: manual pump 1, first throttle valve 2 and the second flow regulating valve 3, the oil outlet of manual pump 1 is communicated with the rod chamber of brake oil cylinder 6 by first throttle valve 2, the second flow regulating valve 3 is arranged on the pipeline between the brake control port X in the working connection of first throttle valve 2 and HM Hydraulic Motor 5, emergency release device also comprises urgent discharge conduit 7, and the internal diameter of this urgent discharge conduit 7 is greater than the internal diameter of pressure measurement line, the two ends of this urgent discharge conduit 7 are communicated with the first actuator port 5A and the second actuator port 5B of HM Hydraulic Motor 5 respectively, urgent discharge conduit 7 is provided with for controlling the control cock of urgent discharge conduit 7 conductings and cut-off.
Further, the internal diameter of urgent discharge conduit 7 can be 3mm～9mm.The reduction ratio of reductor, the tonnage that hoists of hoisting crane in discharge capacity by HM Hydraulic Motor 5 and rotating speed formula q=Vn, hoisting crane, rate request and the elongated orifices flow formula of goods and jib being transferred while promptly discharging
in formula, q is flow, △ p is the difference of pressure at urgent discharge conduit 7 two ends, and l is the length of urgent discharge conduit 7, the internal diameter that d is urgent discharge conduit 7, the on-way resistance coefficient that μ is urgent discharge conduit 7, thereby has determined that the scope of these urgent discharge conduit 7 inner diameter d is 3mm～9mm.
Preferably, the internal diameter of urgent discharge conduit 7 is 5mm.
Particularly, control cock is flow regulating valve 8.This flow regulating valve 8 can be controlled the flow velocity of the fluid of these flow regulating valve 8 place pipelines of flowing through, and then realizes the urgent release rate of dynamically adjusting hoisting crane.
Further, in this control working connection, be provided with balance cock assembly 4, the A mouth of balance cock assembly 4 is communicated with the first actuator port 5A of HM Hydraulic Motor 5, and the B mouth of balance cock assembly 4 is communicated with the second actuator port 5B of HM Hydraulic Motor 5.Balance cock assembly 4 is balance cock integrated package, and urgent discharge conduit 7 and control cock are integrated on balance cock integrated package.In actual production, it is in order to improve the integrated level of emergency release device that balance cock assembly 4 is processed into balance cock integrated package, and urgent discharge conduit 7 and control cock are integrated on balance cock integrated package, can further improve the integrated level of emergency release device.
Particularly, the oil outlet of manual pump 1 is provided with check valve 9, and the oil inlet of check valve 9 is communicated with the oil outlet of manual pump 1, and the oil outlet of check valve 9 is communicated with the oil inlet of first throttle valve 2.This check valve 9 refluxes for preventing the fluid of the oil outlet of manual pump 1.
Particularly, on the chargine line of manual pump 1, be provided with the first filter 10.This first filter 10 can reduce the impurity that enters the fluid in manual pump 1, prevents that the too much impurity of fluid from entering emergency release device inside, thereby affects the service life of each parts in emergency release device.
Further, on the fuel-displaced pipeline of manual pump 1, be provided with compression indicator 11, particularly, this compression indicator 11 can be arranged on the pipeline between check valve 9 and first throttle valve 2.This compression indicator 11 for monitoring and read the oil liquid pressure of compression indicator 11 place pipelines, guarantees that manual pump 1 can make brake oil cylinder 6 actions, and then opens brake, HM Hydraulic Motor 5 can be rotated.
Alternatively, HM Hydraulic Motor 5 can be the HM Hydraulic Motor in the hoisting of hoisting crane, luffing or swing type mechanism.
The HM Hydraulic Motor of lifting mechanism of take is below example, illustrates that the emergency release device that the utility model provides carries out the urgent working process discharging after brake closure:
1, close the second flow regulating valve 3, the first throttle valve 2 of checking card, the handle of operation manual pump 1, rises to the pressure of compression indicator 11 and can make the dog point of brake gear in non-braking mode (dog point that is brake oil cylinder 6 does not contact with brake disc).
2, open flow regulating valve 8, and adjust the openings of sizes of flow regulating valve 8, guarantee that the speed that goods is transferred meets the requirements.
3, after goods is transferred, close flow regulating valve 8, will after the earth pressure release in manual pump 1, close first throttle valve 2, open the second flow regulating valve 3, urgent releasing operation is complete.
Understandably, this HM Hydraulic Motor 5 can be also the HM Hydraulic Motor of luffing mechanism or swing type mechanism, adopts said method also can realize urgent release function to luffing mechanism and swing type mechanism.Correspondingly, in this case, by regulating the openings of sizes of flow regulating valve 8, can control jib lowering velocity or rotation of rotary table speed.
The utility model by installing urgent discharge conduit between two actuator ports of HM Hydraulic Motor, and in urgent discharge conduit, control cock is set, when needs carry out manual-operated emergent release, can pass through two working holes of the direct conducting motor of control cock, needn't manually connect pressure measurement line, simplify the operating process of urgent release, and the internal diameter of urgent discharge conduit is greater than the internal diameter of pressure measurement line, the circulating capacity of emergency release device has been increased, improved speed and efficiency that goods is transferred.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. the emergency release device for hoisting crane, described hoisting crane comprises HM Hydraulic Motor, for the brake gear that described HM Hydraulic Motor is braked and the brake oil cylinder that drives described brake gear, described emergency release device comprises: manual pump, first throttle valve and the second flow regulating valve, the oil outlet of described manual pump is communicated with the rod chamber of described brake oil cylinder by described first throttle valve, described the second flow regulating valve is arranged on the pipeline between the brake control port in the working connection of described first throttle valve and described HM Hydraulic Motor, it is characterized in that, described emergency release device also comprises urgent discharge conduit, the two ends of described urgent discharge conduit are communicated with the first actuator port and second actuator port of described HM Hydraulic Motor respectively, described urgent discharge conduit is provided with for controlling the control cock of described urgent discharge conduit conducting and cut-off.
2. emergency release device according to claim 1, is characterized in that, the internal diameter of described urgent discharge conduit is 3mm～9mm.
3. emergency release device according to claim 2, is characterized in that, the internal diameter of described urgent discharge conduit is 5mm.
4. emergency release device according to claim 1, is characterized in that, described control cock is flow regulating valve.
5. according to the emergency release device described in claim 1-4 any one, it is characterized in that, in described working connection, be provided with balance cock assembly, described balance cock assembly is balance cock integrated package, and described urgent discharge conduit and described control cock are integrated on described balance cock integrated package.
6. according to the emergency release device described in claim 1-4 any one, it is characterized in that, the oil outlet of described manual pump is provided with check valve, and the oil inlet of described check valve is communicated with the oil outlet of described manual pump, and the oil outlet of described check valve is communicated with the oil inlet of described first throttle valve.
7. according to the emergency release device described in claim 1-4 any one, it is characterized in that, on the chargine line of described manual pump, be provided with the first filter.
8. according to the emergency release device described in claim 1-4 any one, it is characterized in that, on the fuel-displaced pipeline of described manual pump, be provided with compression indicator.
9. according to the emergency release device described in claim 1-4 any one, it is characterized in that, described HM Hydraulic Motor is described hoisting crane hoists, the HM Hydraulic Motor in luffing or swing type mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003840.9U CN203754275U (en) | 2014-01-02 | 2014-01-02 | Emergency release device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003840.9U CN203754275U (en) | 2014-01-02 | 2014-01-02 | Emergency release device for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203754275U true CN203754275U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420003840.9U Expired - Fee Related CN203754275U (en) | 2014-01-02 | 2014-01-02 | Emergency release device for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203754275U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117534A (en) * | 2017-03-28 | 2017-09-01 | 武汉船用机械有限责任公司 | A kind of hydraulic control system of crane |
| CN108750977A (en) * | 2018-04-26 | 2018-11-06 | 武汉船用机械有限责任公司 | A kind of manual-operated emergent release system |
| CN109139579A (en) * | 2018-08-29 | 2019-01-04 | 武汉船用机械有限责任公司 | A kind of hydraulic control system and its control method of full-rotating rudder paddle |
| CN112340630A (en) * | 2020-11-18 | 2021-02-09 | 中船华南船舶机械有限公司 | Emergency hydraulic system |
| CN113148884A (en) * | 2021-04-20 | 2021-07-23 | 徐州重型机械有限公司 | Emergency power device and crane winch emergency hydraulic control system |
-
2014
- 2014-01-02 CN CN201420003840.9U patent/CN203754275U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117534A (en) * | 2017-03-28 | 2017-09-01 | 武汉船用机械有限责任公司 | A kind of hydraulic control system of crane |
| CN108750977A (en) * | 2018-04-26 | 2018-11-06 | 武汉船用机械有限责任公司 | A kind of manual-operated emergent release system |
| CN109139579A (en) * | 2018-08-29 | 2019-01-04 | 武汉船用机械有限责任公司 | A kind of hydraulic control system and its control method of full-rotating rudder paddle |
| CN109139579B (en) * | 2018-08-29 | 2020-06-05 | 武汉船用机械有限责任公司 | Hydraulic control system of full-rotation rudder propeller and control method thereof |
| CN112340630A (en) * | 2020-11-18 | 2021-02-09 | 中船华南船舶机械有限公司 | Emergency hydraulic system |
| CN112340630B (en) * | 2020-11-18 | 2021-12-17 | 中船华南船舶机械有限公司 | Emergency hydraulic system |
| CN113148884A (en) * | 2021-04-20 | 2021-07-23 | 徐州重型机械有限公司 | Emergency power device and crane winch emergency hydraulic control system |
| CN113148884B (en) * | 2021-04-20 | 2022-11-29 | 徐州重型机械有限公司 | Emergency power device and crane winch emergency hydraulic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |