A roof breaking device for a coal mining face

Abstract

The utility model relates to the technical field of coal mining equipment discloses a kind of coal face roof breaking devices, including base, telescopic column is vertically arranged on the base, the top of telescopic column is provided with roof beam, and the top of roof beam is provided with taper head;Auxiliary support structure is hingedly arranged between the roof beam and the base, wherein the auxiliary support structure can be stretched or contracted along with the lifting of telescopic column;The utility model, roof breaking area is large, can effectively improve roof breaking efficiency;While stability is strong, can effectively reduce the probability of dumping, reduce security risk.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to a roof breaking device for coal mining faces. Background Technology

[0002] In coal mining, to ensure timely roof collapse and effectively prevent personnel injuries caused by large overhanging areas and sudden collapses, roof-breaking devices are typically used to break the roof. Traditional roof-breaking devices, due to their small cones, usually only create one hole per strike. In actual production, due to factors such as a hard roof or incomplete failure of the anchoring system, the roof collapse may be insufficient. Furthermore, traditional roof-breaking devices have a flexible connection to the base, making them prone to tipping and posing safety hazards.

[0003] Therefore, there is an urgent need for a roof breaking device for coal mining faces that has a large breaking area, does not reduce the breaking pressure, and reduces the probability of collapse. Utility Model Content

[0004] The purpose of this invention is to provide a roof-breaking device for coal mining faces, which has a large roof-breaking area and can effectively improve roof-breaking efficiency; at the same time, it has strong stability and can effectively reduce the probability of collapse and reduce safety hazards.

[0005] The present invention adopts the following technical solution: A roof-breaking device for a coal mining face includes a base, on which a telescopic column is vertically mounted, and a top beam is mounted on the top of the telescopic column. A cone head is mounted on the top of the top beam. An auxiliary support structure is hinged between the top beam and the base, wherein the auxiliary support structure can extend or retract as the telescopic column rises and falls.

[0006] Preferably, the cone head has a cross-shaped cone structure.

[0007] Preferably, the cone head is detachably connected to the top beam.

[0008] Preferably, two telescopic columns are provided.

[0009] Preferably, the telescopic column is an emulsion oil cylinder.

[0010] Preferably, the auxiliary support structure includes a front link and a rear link hinged to the base, the top of the front link and the rear link being hinged to the shield beam, and the shield beam being hinged to the top beam.

[0011] Preferably, the auxiliary support structure includes a front link and a rear link hinged to the base, the top of the front link and the rear link being hinged to the shield beam, and the shield beam being hinged to the top beam.

[0012] Preferably, the telescopic beam mechanism includes a fixed cylinder connected to the base, a telescopic jack is provided on the fixed cylinder, the telescopic end of the telescopic jack is connected to a telescopic beam, the telescopic beam is movably disposed on the fixed cylinder, and the connecting seat is connected to the telescopic beam.

[0013] Preferably, the top of the telescopic column is connected to the top beam via a pin, and the bottom is connected to the base via a pressure plate.

[0014] Preferably, a limiting pin is provided at the rear end of the pin that passes through the through hole on the top beam and the telescopic column.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The cross-shaped cone structure cone head set at the top of the top beam, compared with the cone head of the traditional roof breaking device, can ensure that the roof breaking pressure is not reduced under the same force through the tip of the cross cone, and can also expand the roof breaking area by means of the cross-shaped structural design. This effectively solves the problem of insufficient roof collapse caused by the hardness of the roof plate or the incomplete failure of the anchoring system in the traditional device, and reduces the safety risks caused by the excessive suspended roof area.

[0016] The auxiliary support structure, hinged between the top beam and the base, can extend or retract as the telescopic column is raised and lowered. This structure changes the traditional soft connection between the device and the base, forming a more stable support system. During the raising and lowering of the telescopic column, it provides additional support to the top beam, significantly improving the overall anti-tipping ability of the device, reducing the probability of safety accidents caused by device tipping, and ensuring the personal safety of the operators. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the cone head in an embodiment of this application.

[0018] Figure 3 This is a structural diagram of the hydraulic support connected in an embodiment of this application. Detailed Implementation

[0019] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments: like Figures 1 to 3As shown, the roof-breaking device for coal mining faces according to this utility model includes a base 1, which is made of steel plate and serves as the carrier of the entire roof-breaking device. Two telescopic columns 2 are vertically mounted on the base 1, and a top beam 3 is mounted on the top of each column 2. The top of the top beam 3 has a cone head 4 with a cross-shaped structure. Preferably, both ends of the cone head 4 are double cross-shaped structures. Compared to the cone head 4 of traditional roof-breaking devices, under the same force, the cone head 4 can ensure that the roof-breaking pressure does not decrease through the tip of the cross-shaped structure, and can also expand the roof-breaking area through the cross-shaped structural design. This effectively solves the problem of insufficient roof collapse caused by a hard roof or incomplete failure of the anchoring system in traditional devices, and reduces the safety risks caused by an excessively large suspended roof area. Furthermore, in this embodiment, an auxiliary support structure is hinged between the top beam 3 and the base 1, and this auxiliary support structure can extend or retract as the telescopic columns 2 rise and fall. This structure changes the traditional soft connection between the device and the base 1, forming a more stable support system. During the lifting and lowering operation of the telescopic column 2, it can provide additional support for the top beam 3, significantly improving the overall anti-tipping ability of the device, reducing the probability of safety accidents caused by device tipping, and ensuring the personal safety of the operators.

[0020] Specifically, the auxiliary support structure includes a front connecting rod 5 and a rear connecting rod 6 hinged to the base 1. The tops of both the front connecting rod 5 and the rear connecting rod 6 are hinged to the shield beam 7, which in turn is hinged to the top beam 3. The shield beam 7 provides support while preventing coal and gangue from the goaf from entering the front section, thus improving safety. The front connecting rod 5, the rear connecting rod 6, and the shield beam 7 are all structural components made of steel plates. Together with the base 1, they form a four-bar linkage structure, providing stable structural support for the entire roof-breaking device.

[0021] Furthermore, in this embodiment, the cone head 4 and the top beam 3 are detachably connected by bolts, facilitating subsequent targeted replacement and maintenance, and reducing maintenance costs. Additionally, the top of the telescopic column 2 is connected to the top beam 3 via a pin 8, and the bottom is connected to the base 1 via a pressure plate. The pin 8 passes through the through holes on the top beam 3 and the telescopic column 2, and a limiting pin 9 is installed at its rear end. Furthermore, in this embodiment, the telescopic column 2 is an emulsion cylinder. During operation, high-pressure emulsion is input, and a breaking force is output. The movement of the two columns can be adjusted to raise and lower the breaking device.

[0022] Furthermore, a telescopic beam 14 mechanism is also provided on one side of the base 1. The telescopic beam 14 mechanism is provided with a connecting seat 11 connected to the hydraulic support 10. The telescopic beam 14 mechanism is used for the forward movement of the entire roof breaking device. Specifically, the telescopic beam 14 mechanism includes a fixed cylinder 12 connected to the base 1. A telescopic jack 13 is provided on the fixed cylinder 12. The telescopic end of the telescopic jack 13 is connected to the telescopic beam 14. The telescopic beam 14 is movably mounted on the fixed cylinder 12. With the drive of the telescopic jack 13, the telescopic beam 14 can be pushed to move. In addition, the connecting seat 11 is connected to the telescopic beam 14. During operation, the telescopic beam 14 mechanism can only move telescopically and cannot rotate, so that the roof breaking device cannot be tilted, ensuring the stability of the roof breaking device.

Claims

1. A roof-breaking device for coal mining faces, characterized in that: The device includes a base, on which a telescopic column is vertically mounted. A top beam is mounted on the top of the telescopic column, and a cone head with a cross-shaped structure is mounted on the top of the top beam. An auxiliary support structure is hinged between the top beam and the base, wherein the auxiliary support structure can extend or retract as the telescopic column is raised or lowered.

2. The roof-breaking device for coal mining faces according to claim 1, characterized in that: Both ends of the cone head have a double cross cone structure.

3. The roof-breaking device for coal mining faces according to claim 1, characterized in that: The cone head is detachably connected to the top beam.

4. The roof-breaking device for coal mining faces according to claim 1, characterized in that: There are two telescopic columns.

5. The roof-breaking device for coal mining faces according to claim 4, characterized in that: The telescopic column is an emulsion hydraulic cylinder.

6. The roof-breaking device for coal mining faces according to any one of claims 1-5, characterized in that: The auxiliary support structure includes a front link and a rear link hinged to the base. The tops of the front link and the rear link are hinged to the shield beam, and the shield beam is hinged to the top beam.

7. The roof-breaking device for coal mining faces according to claim 6, characterized in that: The base is provided with a telescopic beam mechanism on one side, and the telescopic beam mechanism is provided with a connecting seat that is connected to the hydraulic support.

8. The roof-breaking device for coal mining faces according to claim 7, characterized in that: The telescopic beam mechanism includes a fixed cylinder connected to the base, a telescopic jack on the fixed cylinder, a telescopic beam connected to the telescopic end of the telescopic jack, the telescopic beam being movably mounted on the fixed cylinder, and a connecting seat connected to the telescopic beam.

9. The roof-breaking device for coal mining faces according to claim 1, characterized in that: The top of the telescopic column is connected to the top beam via a pin, and the bottom is connected to the base via a pressure plate.

10. The roof-breaking device for coal mining faces according to claim 9, characterized in that: The pin passes through the through hole on the top beam and the telescopic column, and a limit pin is provided at the rear end.

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