CN221033402U - Overload-preventing cable winding valve group for power cable of mining hydraulic anchor rod drill carriage - Google Patents
Overload-preventing cable winding valve group for power cable of mining hydraulic anchor rod drill carriage Download PDFInfo
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- CN221033402U CN221033402U CN202322949521.9U CN202322949521U CN221033402U CN 221033402 U CN221033402 U CN 221033402U CN 202322949521 U CN202322949521 U CN 202322949521U CN 221033402 U CN221033402 U CN 221033402U
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- hydraulic control
- oil inlet
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- 238000004804 winding Methods 0.000 title claims abstract description 45
- 238000005065 mining Methods 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 113
- 239000010705 motor oil Substances 0.000 claims description 15
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses an overload-preventing cable winding valve group for a power cable of a mining hydraulic anchor rod drill carriage, and relates to the technical field of hydraulic control valve groups, comprising a valve block main body, wherein a valve block oil inlet, a valve block oil outlet, a first oil return port and a second oil return port are arranged on the valve block main body; an oil inlet pipeline is arranged between the valve block oil inlet and the first oil return port, a one-way valve and a hydraulic control reversing valve are sequentially arranged on the oil inlet pipeline, an A port and a P port of the hydraulic control reversing valve are connected to the oil inlet pipeline, a hydraulic control port a is connected with the oil inlet pipeline, and a hydraulic control port b is connected with the oil inlet pipeline; an oil outlet pipeline is arranged between the oil outlet of the valve block and the second oil return port, a first overflow pipeline is arranged between the oil inlet pipeline and the oil outlet pipeline, and a first overflow valve is arranged on the first overflow pipeline; a second overflow pipeline is arranged between the oil outlet pipeline and the T port of the hydraulic control reversing valve, and a second overflow valve is arranged on the second overflow pipeline. The utility model can ensure that the speed of winding and unwinding the cable is consistent with the speed of the vehicle, and can play the role of overload protection, thereby having good safety.
Description
Technical Field
The utility model relates to the technical field of hydraulic control valve sets, in particular to an overload-preventing cable winding valve set for a power cable of a mining hydraulic anchor rod drill carriage.
Background
The hydraulic anchor rod drill carriage for coal mine is characterized by that it utilizes external power cable to drive motor to work, and the mechanical energy output by motor is converted into hydraulic power energy by means of hydraulic pump, then utilizes pipeline to drive hydraulic actuating mechanism to implement the working of walking and anchor rod supporting, etc..
Because the walking distance of the hydraulic anchor rod drill carriage for the coal mine is far, the power cable between the hydraulic anchor rod drill carriage and the distribution room is required to be wound and unwound through the cable winding mechanism of the hydraulic anchor rod drill carriage for the coal mine.
The traditional cable winding mechanism is characterized in that an operator stands at the tail to observe the tightness of a cable, and the motor is controlled to rotate forwards and backwards by hand to complete winding and unwinding of the power cable. However, when the manual control of an operator is performed, the situation that the cable laying speed is inconsistent with the vehicle speed easily occurs in the cable laying process, once the cable is fast laid, the cable is possibly crushed by the anchor rod drill carriage due to overlong cable length, and the cable is slowed down, so that the power cable is easily torn due to overlarge cable tension, and therefore, the operation is low in efficiency and has great potential safety hazards.
Therefore, an overload-preventing cable winding valve group for a power cable of a mining hydraulic anchor rod drill carriage is urgently needed in the market and is used for solving the problems.
Disclosure of utility model
The utility model aims to provide an overload-preventing cable winding valve group for a power cable of a mining hydraulic anchor rod drill carriage, which is used for solving the technical problems in the prior art, is arranged between a main cable winding valve and a cable winding motor, plays a role in preventing the cable winding from being stretched in an overload manner, keeps the speed of a cable releasing cable consistent with the running speed of the anchor rod drill carriage, and plays a role in overload protection.
In order to achieve the above object, the present utility model provides the following solutions:
The utility model discloses an overload-preventing cable winding valve block for a power cable of a mining hydraulic anchor rod drill carriage, which comprises a valve block main body, wherein a valve block oil inlet, a valve block oil outlet, a first oil return port and a second oil return port are arranged on the valve block main body;
an oil inlet pipeline is arranged between the valve block oil inlet and the first oil return port, a one-way valve and a hydraulic control reversing valve are sequentially arranged on the oil inlet pipeline, the one-way valve is closer to the valve block oil inlet than the hydraulic control reversing valve, an A port and a P port of the hydraulic control reversing valve are connected to the oil inlet pipeline, a hydraulic control port a of the hydraulic control reversing valve is connected with the oil inlet pipeline through a first hydraulic control pipeline, and a hydraulic control port b of the hydraulic control reversing valve is connected with the oil inlet pipeline through a second hydraulic control pipeline;
An oil outlet pipeline is arranged between the oil outlet of the valve block and the second oil return port, a first overflow pipeline is arranged between the oil inlet pipeline and the oil outlet pipeline, and a first overflow valve is arranged on the first overflow pipeline;
The port B of the hydraulic control reversing valve is connected to the oil outlet pipeline, a second overflow pipeline is arranged between the oil outlet pipeline and the port T of the hydraulic control reversing valve, and a second overflow valve is arranged on the second overflow pipeline.
Preferably, the set pressure of the first overflow valve is 6Mpa.
Preferably, the set pressure of the second overflow valve is 2Mpa.
Preferably, the one-way valve is in threaded connection with the inside of the valve block oil inlet.
Preferably, the first overflow valve and the second overflow valve are both in threaded connection with the surface threaded holes of the valve block main body.
Compared with the prior art, the utility model has the following technical effects:
The utility model has the advantages that the cable laying process is to float and lay the cable by self weight of the power cable, manual control is not needed, the valve block main body can automatically match the cable laying speed only by controlling the advance of the anchor rod drill, the travelling speed of the anchor rod drill carriage is kept consistent, the cable reeling tension is just maintained below the minimum tension which can pull the power cable out of the winding drum, overload protection is achieved, the cable laying can not be continued due to the inertia of the winding drum during intermediate temporary stopping, and the cable laying efficiency and the safety are greatly improved. The cable winding device can prevent the cable winding tension from exceeding the maximum safe tension of the power cable and plays an overload protection role.
In the whole, the utility model has the advantages that due to the structural characteristics of two-in and two-out, the installation is convenient, and two rubber pipes can be connected in series between the main cable winding valve and the cable winding motor of all types of hydraulic anchor rod drilling carts, so that the risks of excessive stretching of cables and overlong cable unwinding by the anchor rod drilling carts in the traditional manual cable unwinding mode by feeling are avoided, and dangerous accidents are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a connection relation diagram of a mining hydraulic anchor drill carriage power cable overload prevention cable reel valve set according to an embodiment of the utility model;
Fig. 2 is a schematic structural diagram of a valve block main body in a power cable overload protection cable winding valve set of a mining hydraulic anchor drill carriage according to an embodiment of the utility model;
FIG. 3 is a side view of a valve block body in a mining hydraulic rock bolt rig power cable overload protection cable spool valve block according to an embodiment of the present utility model;
Fig. 4 is a schematic structural diagram of a cable winding motor in a power cable overload prevention cable winding valve set of a mining hydraulic anchor drill carriage according to an embodiment of the utility model;
In the figure: 1-a valve block body; 2-a one-way valve; 3-a hydraulically-controlled reversing valve; 4-a first overflow valve; 5-a second overflow valve; 6, an oil inlet of the valve block; 7-a first oil return port; 8-a second oil return port; 9-valve block oil outlet; 10-an oil tank; 11-a motor oil inlet; 12-a motor oil outlet; 13-a cable winding motor; 14-an oil inlet pipeline; 15-an oil outlet pipeline; 16-a first overflow line; 17-a second overflow line; 18-a first pilot operated line; 19-a second pilot operated line.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide an overload-preventing cable winding valve group for a power cable of a mining hydraulic anchor rod drill carriage, which is used for solving the technical problems in the prior art, is arranged between a main cable winding valve and a cable winding motor, plays a role in preventing the cable winding from being stretched in an overload manner, keeps the speed of a cable releasing cable consistent with the running speed of the anchor rod drill carriage, and plays a role in overload protection.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-4, the embodiment provides an overload-preventing cable winding valve set for a power cable of a mining hydraulic anchor rod drill carriage, which comprises a valve block main body 1, wherein a valve block oil inlet 6, a valve block oil outlet 9, a first oil return port 7 and a second oil return port 8 are arranged on the valve block main body 1. The valve block oil inlet 6 is used for connecting a hydraulic oil source, specifically, the valve block oil inlet 6 can be connected to a main cable winding valve through a rubber pipe, the valve block oil outlet 9 is used for connecting an oil tank 10, and the first oil return port 7 and the second oil return port 8 are respectively connected with a motor oil inlet 11 and a motor oil outlet 12 of a cable winding motor 13 through high-pressure rubber pipes.
An oil inlet pipeline 14 is arranged between the valve block oil inlet 6 and the first oil return port 7, a one-way valve 2 and a pilot operated directional valve 3 are sequentially arranged on the oil inlet pipeline 14, the one-way valve 2 is closer to the valve block oil inlet 6 than the pilot operated directional valve 3, and the one-way valve 2 can only allow hydraulic oil to flow from the valve block oil inlet 6 to the direction of the first oil return port 7. The hydraulic control reversing valve 3 adopts the existing two-position four-way reversing valve, wherein an A port and a P port of the hydraulic control reversing valve 3 are connected to an oil inlet pipeline 14. The hydraulic control port a of the hydraulic control reversing valve 3 is connected with the oil inlet pipeline 14 through a first hydraulic control pipeline 18, namely, one end of the first hydraulic control pipeline 18 is connected with the hydraulic control port a, the other end of the first hydraulic control pipeline 18 is connected with the oil inlet pipeline 14, and one end of the first hydraulic control pipeline 18 arranged on the oil inlet pipeline 14 is positioned on one side of the one-way valve 2 close to the valve block oil inlet 6. The hydraulic control port b of the hydraulic control reversing valve 3 is connected with the oil inlet pipeline 14 through a second hydraulic control pipeline 19, namely, one end of the second hydraulic control pipeline 19 is connected with the hydraulic control port b, the other end of the second hydraulic control pipeline 19 is connected with the oil inlet pipeline 14, and one end of the second hydraulic control pipeline 19 arranged on the oil inlet pipeline 14 is positioned on one side of the hydraulic control reversing valve 3 close to the first oil return port 7.
An oil outlet pipeline 15 is arranged between the valve block oil outlet 9 and the second oil return port 8, a first overflow pipeline 16 is arranged between the oil inlet pipeline 14 and the oil outlet pipeline 15, namely, two ends of the first overflow pipeline 16 are respectively arranged on the oil inlet pipeline 14 and the oil outlet pipeline 15, and a first overflow valve 4 is arranged on the first overflow pipeline 16.
The port B of the hydraulic control reversing valve 3 is connected to the oil outlet pipeline 15, a second overflow pipeline 17 is arranged between the oil outlet pipeline 15 and the port T of the hydraulic control reversing valve 3, and a second overflow valve is arranged on the second overflow pipeline 17.
In actual use, when the winding drum winds up the cable, the cable winding motor 13 rotates positively to pull the operating handle of the main cable winding valve. The main valve of the cable winding provides pressure oil to enter the valve block main body 1 through the valve block oil inlet 6, and is communicated with the oil inlet end of the built-in one-way valve 2 through the oil inlet pipeline 14, and the oil outlet end of the built-in one-way valve 2 is continuously communicated with the P port of the hydraulic control reversing valve 3 along the oil inlet pipeline 14. Because the hydraulic control port a of the hydraulic control reversing valve 3 is communicated with the oil inlet pipeline 14, the left side of the valve core can work when the hydraulic control reversing valve is acted by external pressure oil. So that the P port of the hydraulic control reversing valve 3 is communicated with the A port of the hydraulic control reversing valve 3, and the A port of the hydraulic control reversing valve 3 is communicated with the first oil return port 7 through the oil inlet pipeline 14. The first oil return port 7 is communicated with the motor oil inlet 11 through an external pipeline, and the motor oil outlet 12 is communicated with the second oil return port 8 through an external pipeline. The second oil return port 8 is communicated with the valve block oil outlet 9 through an oil outlet pipeline 15 and finally flows back to the oil tank 10, so that the forward rotation cable collection of the cable coiling motor 13 is realized. In the process, if the tension of the coiled cable is too large and exceeds the safety tension of the power cable, namely, the pressure of the motor oil inlet 11 is too high and exceeds the set pressure of the first overflow valve 4, the first overflow valve 4 performs overflow protection, so that the pressure of the motor oil inlet 11 is maintained below the safety pressure, and an overload protection effect is achieved.
When the winding drum is in a cable releasing state, the winding drum motor 13 reverses the winding drum to be in a floating state, so that the operating handle of the main valve of the winding drum is reset, and hydraulic oil only circulates and flows between the winding drum motor 13 and the internal oil path of the valve block main body 1. At this time, hydraulic oil is communicated with the first oil return port 7 through an external pipeline from the motor oil inlet 11, and the first oil return port 7 is communicated with the A port of the hydraulic control reversing valve 3 through an oil inlet pipeline 14 and flows to the P port of the hydraulic control reversing valve 3. At this time, the hydraulic oil is cut off at the oil outlet end of the internal one-way valve 2 due to the reverse stop action of the internal one-way valve 2, and at this time, the back pressure is generated at the motor oil inlet 11 in the cable releasing process due to the dead weight of the power cable, so that the hydraulic control port b of the hydraulic control reversing valve 3 is controlled to reverse under the back pressure action, and the right side of the valve core can work. The port A of the hydraulic control reversing valve 3 is communicated with the port T of the hydraulic control reversing valve 3, the port T of the hydraulic control reversing valve 3 is communicated with the oil inlet end of the second overflow valve 5 through a second overflow pipeline 17, the oil outlet end of the second overflow valve 5 is communicated with the second oil return port 8 through the second overflow pipeline 17 and an oil outlet pipeline 15, finally the hydraulic control reversing valve is returned to the motor oil outlet 12, the winding drum is in a floating state, the internal circulation process of hydraulic oil is realized, and the reverse floating cable laying action of the cable winding motor 13 is completed. In the process, if the cable laying tension is too large and exceeds the pressure which just enables the cable to float on the ground and is not straightened and overloaded, when the pressure of the motor oil inlet 11 rises and exceeds the set pressure of the second overflow valve 5, the overflow protection is started by the second overflow valve 5, so that the pressure of the motor oil inlet 11 is maintained below the minimum tension which just can pull the power cable out of the winding drum, overload protection is achieved, and the cable laying is not continued due to the inertia of the winding drum during intermediate temporary stopping, and the risk that the power cable is rolled during the backward of the anchor-rod drill carriage is avoided.
In the present embodiment, the set pressure of the first relief valve 4 is 6Mpa, and a person skilled in the art can adjust the set pressure of the first relief valve 4 according to actual needs, which is not limited to this embodiment.
In this embodiment, the set pressure of the second relief valve 5 is 2Mpa. Similarly, for the preset pressure of the second relief valve 5, those skilled in the art can also adjust appropriately according to the actual situation.
In this embodiment, as shown in fig. 2, an external thread portion is provided on the outer side of the check valve 2, so that the check valve 2 can be directly screwed into the interior of the valve block oil inlet 6.
In this embodiment, as shown in fig. 2, an external thread is provided at an end interface of the first relief valve 4 and the second relief valve 5, so that the first relief valve 4 and the second relief valve 5 are both screwed at corresponding threaded holes on the surface of the valve block body 1.
The principles and embodiments of the present utility model have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present utility model and its core ideas; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (5)
1. The utility model provides a mining hydraulic anchor rod drill carriage power cable overload prevention cable reel valve group which characterized in that: the valve block comprises a valve block main body, wherein a valve block oil inlet, a valve block oil outlet, a first oil return port and a second oil return port are arranged on the valve block main body, the valve block oil inlet is used for being connected with a hydraulic oil source, the valve block oil outlet is used for being connected with an oil tank, and the first oil return port and the second oil return port are respectively used for being connected with a motor oil inlet and a motor oil outlet of a cable winding motor;
an oil inlet pipeline is arranged between the valve block oil inlet and the first oil return port, a one-way valve and a hydraulic control reversing valve are sequentially arranged on the oil inlet pipeline, the one-way valve is closer to the valve block oil inlet than the hydraulic control reversing valve, an A port and a P port of the hydraulic control reversing valve are connected to the oil inlet pipeline, a hydraulic control port a of the hydraulic control reversing valve is connected with the oil inlet pipeline through a first hydraulic control pipeline, and a hydraulic control port b of the hydraulic control reversing valve is connected with the oil inlet pipeline through a second hydraulic control pipeline;
An oil outlet pipeline is arranged between the oil outlet of the valve block and the second oil return port, a first overflow pipeline is arranged between the oil inlet pipeline and the oil outlet pipeline, and a first overflow valve is arranged on the first overflow pipeline;
The port B of the hydraulic control reversing valve is connected to the oil outlet pipeline, a second overflow pipeline is arranged between the oil outlet pipeline and the port T of the hydraulic control reversing valve, and a second overflow valve is arranged on the second overflow pipeline.
2. The mining hydraulic rock bolt rig power cable overload protection cable spool valve set of claim 1, wherein: the set pressure of the first overflow valve is 6Mpa.
3. The mining hydraulic rock bolt rig power cable overload protection cable spool valve set of claim 1, wherein: the set pressure of the second overflow valve is 2Mpa.
4. The mining hydraulic rock bolt rig power cable overload protection cable spool valve set of claim 1, wherein: the one-way valve is connected with the inside of the valve block oil inlet through threads.
5. The mining hydraulic rock bolt rig power cable overload protection cable spool valve set of claim 1, wherein: the first overflow valve and the second overflow valve are both in threaded connection with the surface threaded holes of the valve block main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322949521.9U CN221033402U (en) | 2023-11-01 | 2023-11-01 | Overload-preventing cable winding valve group for power cable of mining hydraulic anchor rod drill carriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322949521.9U CN221033402U (en) | 2023-11-01 | 2023-11-01 | Overload-preventing cable winding valve group for power cable of mining hydraulic anchor rod drill carriage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221033402U true CN221033402U (en) | 2024-05-28 |
Family
ID=91177736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322949521.9U Active CN221033402U (en) | 2023-11-01 | 2023-11-01 | Overload-preventing cable winding valve group for power cable of mining hydraulic anchor rod drill carriage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221033402U (en) |
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2023
- 2023-11-01 CN CN202322949521.9U patent/CN221033402U/en active Active
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