Coal face hydraulic support removing device

Abstract

The utility model discloses a coal face hydraulic support removing device which comprises a drawing and adjusting assembly and a towing bracket assembly, the drawing and adjusting assembly comprises a support removing cross beam connected with a shield support, the towing bracket assembly comprises a short cross beam connected with a hydraulic support set, and a dragging mechanism is arranged at the end, close to the support removing cross beam, of the short cross beam. The support withdrawing cross beam in the withdrawing and adjusting assembly is used for supporting the support to be withdrawn, the hydraulic support is withdrawn and adjusted through work of the hydraulic telescopic mechanism of the support to be withdrawn, the support to be withdrawn is pulled out of the support nest and then connected with the dragging mechanism, the withdrawn support is dragged to the position below the hoisting beam of the monorail crane, and the monorail crane is used for transporting the support away. The links of adjusting the winch frame and dragging the support in the frame withdrawing process are omitted, and large risks and hidden dangers caused by a winch steel wire rope and a return wheel to safety and withdrawing operators are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine equipment, and particularly relates to a hydraulic support removal device for a coal mining face. Background Art

[0002] The removal of the hydraulic support equipment in the fully mechanized coal mining face is an essential link in the coal mining process. The hydraulic supports used for supporting the roof of the working face not only have a large quantity, but also their total weight accounts for more than 80% of the total weight of the equipment in the whole working face. The installation and removal of the working face are crucial for ensuring the normal succession of the mine.

[0003] During the removal operation of the working face, the removal of the hydraulic support is of utmost importance. At present, in China's coal mine installation and removal operations, especially in most coal mines put into production earlier, the auxiliary transportation operations have not fully developed to rubber-tyred installation and removal operations, and are limited to the installation and removal operations carried out by the combination of single-track hoist transportation and winch towing. The use of winches in the installation and removal operations has not been completely eliminated. The withdrawal of the hydraulic support relies on the winch and wire rope traction. Since the wire rope is prone to breakage and flying, there are great potential safety hazards, and the labor intensity is high, the withdrawal speed is slow, and the work efficiency is low. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, a hydraulic support removal device for a coal mining face is proposed, which solves the problems that the use of winches in the installation and removal operations has not been completely eliminated, there are great potential safety hazards, and the labor intensity is high, the withdrawal speed is slow, and the work efficiency is low in the above-mentioned background art.

[0005] To achieve the above object, the present utility model proposes the following technical solutions for implementation:

[0006] The hydraulic support removal device for a coal mining face includes a pumping component and a towing component. The pumping component includes a removal cross beam connected to the shield support. The towing component includes a short cross beam connected to the hydraulic support group. A dragging mechanism is arranged at one end of the short cross beam close to the removal cross beam. After the removal cross beam pulls out the support to be removed from the support socket, the dragging mechanism drags the support to be removed under the single-track hoist locomotive.

[0007] Further, the pumping component further includes a longitudinal beam fixed at one end of the removal cross beam, and the support to be removed is detachably connected to the longitudinal beam.

[0008] Further, the longitudinal beam is arranged parallel to the short cross beam and perpendicular to the removal cross beam, and a clamping plate for clamping the first chain is arranged on the longitudinal beam.

[0009] Further, the support to be removed includes a first hydraulic rod, and one end of the first hydraulic rod close to the longitudinal beam is detachably connected to a first chain. The first chain includes a plurality of first chain links that can be clamped with the clamping plate.

[0010] Furthermore, the dragging mechanism includes a second hydraulic rod, which is hinged to the short cross beam, and the support to be withdrawn is detachably connected to the second hydraulic rod.

[0011] Furthermore, a second chain is provided at one end of the second hydraulic rod close to the extraction assembly. The second chain includes a plurality of second chain links, and a clamping portion for clamping the second chain links is provided on the support to be withdrawn.

[0012] Furthermore, the short cross beam is installed at one end of the hydraulic support group away from the support to be withdrawn, and the short cross beam is located below the single-rail hoist locomotive.

[0013] Furthermore, an inclined beam is provided between the longitudinal beam and the beam for withdrawing the support. A right triangle structure is formed between the inclined beam, the longitudinal beam and the beam for withdrawing the support.

[0014] Compared with the prior art, the comprehensive effects brought by the present utility model include:

[0015] In this application, the beam for withdrawing the support in the extraction assembly provides support for the support to be withdrawn. The hydraulic support is withdrawn and adjusted by the operation of the hydraulic telescopic mechanism of the support to be withdrawn itself. After the support to be withdrawn is pulled out of the support socket, it is connected to the dragging mechanism, and the withdrawn support is towed to the lifting beam of the single-rail hoist locomotive, and the single-rail hoist locomotive is used to transport the support away. The link of using a winch to adjust the support and tow the support during the support withdrawal process is cancelled, and the great risks and potential hazards brought by the winch steel wire rope and the return pulley to the installation and removal operators are avoided. Description of the Drawings

[0016] Figure 1 Schematic diagram of the support withdrawal state of the embodiment of the present utility model;

[0017] Figure 2 Schematic diagram of the support towing state of the embodiment of the present utility model;

[0018] Figure 3 Schematic diagram of the structure of the extraction assembly of the embodiment of the present utility model.

[0019] Legend: 1. Beam for withdrawing the support; 2. Hydraulic support group; 3. Short cross beam; 4. Support to be withdrawn; 5. Longitudinal beam; 6. Clamping plate; 7. First hydraulic rod; 8. Second hydraulic rod; 9. Inclined beam. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present utility model.

[0021] In this text, relative terms such as "first" and "second" that appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model.

[0022] As Figures 1 to 3 shown, the hydraulic support removal device for a coal mining face includes a pumping component and a towing component. The pumping component includes a removal beam 1 connected to a shield support, and the towing component includes a short beam 3 connected to a hydraulic support group 2. A dragging mechanism is provided at one end of the short beam 3 close to the removal beam 1. After the removal beam 1 pulls the support to be removed 4 out of the support socket, the dragging mechanism drags the support to be removed 4 under the single-track hoist locomotive.

[0023] The removal beam 1 in the pumping component is provided to support the support to be removed 4. The hydraulic support is pulled and adjusted by connecting the hydraulic telescopic mechanism of the support to be removed 4 itself to the removal beam 1. After the support to be removed 4 is pulled out of the support socket, it is connected to the dragging mechanism, and the removed support 4 is towed to under the lifting beam of the single-track hoist locomotive with the short beam 3 as a fulcrum, and the single-track hoist locomotive is used to transport the support away. This application facilitates canceling the winch support adjustment and support towing links during the process of removing hydraulic supports in the working face. The removal and towing of hydraulic supports are completed through the combination of the above two components, avoiding the greater risks and potential hazards brought by the winch steel wire rope and the return pulley to the installation and removal operators.

[0024] In the hydraulic support removal device for a coal mining face of this embodiment, the pumping component further includes a longitudinal beam 5 fixed at one end of the removal beam 1, and the support to be removed 4 is detachably connected to the longitudinal beam 5.

[0025] Specifically, the removal beam 1 is fixedly connected to the old goaf side shield support, the middle side shield support, and the face side shield support arranged side by side in the width direction of the working face through three groups of positioning pins respectively. The longitudinal beam 5 is fixed at the end of the removal beam 1 away from the support to be removed 4 to leave enough space for the support to be removed 4 to move out of the support socket.

[0026] Preferably, the three groups of shield supports are connected to the removal beam 1 through triangular connecting plates and pin shafts, which can realize the pulling and moving of the support to be removed 4, and at the same time, the three groups of shield supports can be pulled by pulling the removal beam 1 to perform support pulling for the supports to be removed 4 at different positions, which is safe, convenient, and has high removal efficiency.

[0027] In the hydraulic support removal device for the coal mining face of this embodiment, the longitudinal beam 5 is arranged parallel to the short cross beam 3 and perpendicular to the removal cross beam 1, and a clamping plate 6 for clamping the first chain is arranged on the longitudinal beam 5.

[0028] Specifically, the longitudinal beam 5 is perpendicular to the removal cross beam 1 in an L shape, thereby achieving perpendicularity to the support to be removed 4, reducing the area occupied by the installation of the longitudinal beam 5, providing stable support for the support to be removed 4, facilitating the staff to move and adjust each removal structure within the working face, and setting the clamping plate 6 to fix the first chain. The support to be removed 4 is connected to the longitudinal beam 5 through the first chain.

[0029] Preferably, an inclined beam 9 is arranged between the longitudinal beam 5 and the removal cross beam 1. A right triangle structure is formed between the inclined beam 9, the longitudinal beam 5, and the removal cross beam 1. The removal cross beam 1, the longitudinal beam 5, and the inclined beam 9 are fixedly connected by pins, which is firm and reliable and provides stable support for the support to be removed 4.

[0030] In the hydraulic support removal device for the coal mining face of this embodiment, the support to be removed 4 includes a first hydraulic rod 7. One end of the first hydraulic rod 7 close to the longitudinal beam 5 is detachably connected to the first chain, and the first chain includes a plurality of first chain links that can be clamped with the clamping plate 6.

[0031] Specifically, when removing the support, first remove the pipelines of the support to be removed 4. After extending the pushing frame of the support to be removed 4, connect it to the clamping plate 6 on the longitudinal beam 5 through the first chain. Withdraw the support to be removed 4 from the support socket by contracting the first hydraulic rod 7 of the pushing frame. Then, extend the first hydraulic rod 7, adjust the first chain to make the first chain links at different positions clamped with the clamping plate 6, and contract again to drive the support to be removed 4 to move. Repeat the above operations to complete the extraction of the support to be removed 4.

[0032] In the hydraulic support removal device for the coal mining face of this embodiment, the dragging mechanism includes a second hydraulic rod 8. The second hydraulic rod 8 is hinged to the short cross beam 3, and the support to be removed 4 is detachably connected to the second hydraulic rod 8.

[0033] Specifically, the short cross beam 3 is connected to the hydraulic support group 2 in the working face through a triangular connecting plate and a pin, providing stable support for dragging the support to be removed 4. The second hydraulic rod 8 is fixed to the short cross beam 3 through a pin.

[0034] Specifically, the hydraulic support group 2 includes a plurality of supports to be removed. In this application, for the convenience of description, the hydraulic support to be removed is defined as the support to be removed 4 to distinguish it from the hydraulic support group 2. The short cross beam 3 is connected to two groups of supports to be removed in the hydraulic support group 2.

[0035] Preferably, the short crossbeam 3 is installed at one end of the hydraulic support group 2 away from the support to be withdrawn 4. The short crossbeam 3 is located below the single-track hoist locomotive, facilitating the connection with the single-track hoist locomotive to complete the support withdrawal.

[0036] In the coal face hydraulic support removal device of this embodiment, a second chain is provided at one end of the second hydraulic rod 8 close to the extraction assembly. The second chain includes a plurality of second chain links, and a clamping portion for clamping the second chain link is provided on the support to be withdrawn 4.

[0037] Specifically, the other end of the second hydraulic rod 8 is connected to the support to be withdrawn 4 that has completed the extraction through the second chain. The second hydraulic rod 8 reciprocates and cooperates with adjusting the clamping position of the second chain and the clamping portion to gradually drag the support to be withdrawn 4 under the single-track hanging beam of the working face, and then use the single-track hoist to lift it away.

[0038] Preferably, the second chain adopts a No. 26 mining chain.

[0039] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "rotation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Although the embodiments of the present invention have been shown and described in detail, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic support removal device for a coal mining face, characterized in that: It includes a withdrawal component and a towing frame component. The withdrawal component includes a withdrawal beam connected to the shielding support. The towing frame component includes a short beam connected to the hydraulic support group. A dragging mechanism is provided at one end of the short beam close to the withdrawal beam. After the withdrawal beam pulls the support to be withdrawn out of the frame nest, the dragging mechanism drags the support to be withdrawn to the bottom of the monorail crane.

2. The coal mining face hydraulic support removal device according to claim 1, characterized in that: The withdrawing assembly also includes a longitudinal beam fixed to one end of the withdrawing cross beam, and the support to be withdrawn is detachably connected to the longitudinal beam.

3. The coal mining face hydraulic support removal device according to claim 2, characterized in that: The longitudinal beam is arranged parallel to the short cross beam and perpendicular to the frame withdrawal cross beam, and a clamping plate capable of clamping the first chain is arranged on the longitudinal beam.

4. The coal mining face hydraulic support removal device according to claim 3, characterized in that: The support to be removed comprises a first hydraulic rod, one end of the first hydraulic rod close to the longitudinal beam is detachably connected to a first chain, and the first chain comprises a plurality of first chain links which can be clamped with a pallet.

5. The coal mining face hydraulic support removal device according to claim 1, characterized in that: The dragging mechanism comprises a second hydraulic rod, the second hydraulic rod is hinged to the short cross beam, and the bracket to be removed is detachably connected to the second hydraulic rod.

6. The coal mining face hydraulic support removal device according to claim 5, characterized in that: A second chain is arranged at one end of the second hydraulic rod close to the withdrawal assembly. The second chain includes a plurality of second chain links. A clamping portion capable of clamping the second chain links is arranged on the bracket to be withdrawn.

7. The coal mining face hydraulic support removal device according to claim 1, characterized in that: The short cross beam is installed at one end of the hydraulic support group away from the support to be removed, and the short cross beam is located below the monorail crane.

8. The coal mining face hydraulic support removal device according to claim 2, characterized in that: An oblique beam is arranged between the longitudinal beam and the frame-removing cross beam, and a right-angled triangle structure is formed between the oblique beam, the longitudinal beam and the frame-removing cross beam.

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