Hydraulic support for supporting triangular area of retracement working face

Abstract

The utility model discloses a hydraulic support for supporting a triangular area of a retracement working face, which comprises a base, a sliding seat, a motor and a screw rod, and is characterized in that a plurality of hydraulic cylinders are fixedly connected onto the base and the sliding seat respectively, a top plate is connected onto piston rods of the hydraulic cylinders, and a second mounting seat is slidably connected into the base; a screw rod is rotationally connected into the second mounting seat through a first bearing, one end of the screw rod is in threaded connection into a threaded pipe, the threaded pipe is fixedly connected into the first mounting seat, and the first mounting seat is slidably connected into the sliding seat; the utility model has the beneficial effects that the hydraulic cylinder is adopted for supporting, the safety is high, the base and the sliding seat are matched for use, manual erection is not needed, the working efficiency is high, meanwhile, a large number of wood stacks are not needed, the repeated use is realized, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a hydraulic support for supporting a triangular area of ​​a withdrawn working face. Background Art

[0002] Coal mine comprehensive mining hydraulic support is an important equipment in the coal mine comprehensive mining equipment set, and there are a large number of them. When mining to the stop line, coal mining machines, scrapers, comprehensive mining hydraulic supports and other equipment need to be moved from one working face to the next face to be mined. The withdrawal of comprehensive mining hydraulic supports in the withdrawal of comprehensive mining equipment is characterized by large workload, heavy tasks, high costs and high safety risks.

[0003] The process and equipment for withdrawing the fully mechanized mining support have the following deficiencies: Low safety: When using wood piles for support, personnel need to work under the unsupported roof, which poses a safety risk. The wood piles have poor stability and low support strength, and cannot actively support the roof of the withdrawal triangle area, and the support and protection performance of the roof is poor; Low efficiency: Manually erecting wood piles takes a long time and has low efficiency, and the working face withdrawal time is long, which greatly affects the production efficiency of the coal mine; High cost: The amount of wood piles used for the withdrawal of the fully mechanized mining working face is large, and the wood piles cannot be recycled and are directly buried underground, resulting in serious material waste and problems. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a hydraulic support for supporting the triangular area of ​​a withdrawn working face to solve the existing problems.

[0005] The utility model is realized through the following technical scheme: a hydraulic support for supporting the triangular area of ​​a withdrawn working surface, comprising a base, a slide, a motor and a screw, characterized in that a plurality of hydraulic cylinders are fixedly connected to the base and the slide respectively, the piston rod of the hydraulic cylinder is connected to the top plate, the base is slidably connected to the second mounting seat, the second mounting seat is rotatably connected to the screw through the first bearing, one end of the screw is threadedly connected to the threaded tube, the threaded tube is fixedly connected to the first mounting seat, and the first mounting seat is slidably connected to the slide.

[0006] The bottom of the second mounting seat is fixedly connected to a plurality of second optical axes, the second optical axes are slidably connected in the base, the bottom of the second optical axis is fixedly connected to one end of the first spring, and the other end of the first spring is fixedly connected in the base.

[0007] The bottom of the first mounting seat is fixedly connected to a plurality of first optical axes, the first optical axes are slidably connected in the sliding seat, the bottom of the first optical axis is fixedly connected to one end of the second spring, and the other end of the second spring is fixedly connected in the sliding seat.

[0008] The second mounting seat is fixedly connected to the motor, the rotating shaft of the motor is fixedly connected to the first gear, the first gear is meshed with the second gear, and the second gear is fixedly connected to the screw.

[0009] A limiting block is fixedly connected to the base, and the limiting block is located between the base and the sliding seat.

[0010] The beneficial effects of the utility model are embodied in: the use of hydraulic cylinder support has high safety, the base and the slide are used in combination, no manual erection is required, the work efficiency is high, and at the same time no large number of wood piles are required, the wood can be reused, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0012] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 3 For this utility model Figure 2 Cross-section at AA;

[0015] Figure 4 For this utility model Figure 3 A magnified view of the structure at point B in the middle;

[0016] Figure 5 This is a schematic diagram of the top view of the structure of the utility model;

[0017] Figure 6 For this utility model Figure 5 Cross-section at CC.

[0018] In the accompanying drawings, 1. top plate, 2. hydraulic cylinder, 3. base, 4. motor, 5. first gear, 6. second gear, 7. screw, 8. first mounting seat, 9. slide seat, 10. bearing, 11. threaded tube, 12. first optical axis, 13. limit block, 14. second mounting seat, 15. second optical axis, 16. first spring, 17. second spring. DETAILED DESCRIPTION

[0019] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0021] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is inverted, an element described as being "below" another element or feature would be positioned "above" the other element or feature. Thus, the exemplary term "below" can encompass both above and below orientations.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation of the present invention is described in detail below with reference to specific embodiments: Figures 1-6 The utility model shown is realized through the following technical scheme: a hydraulic support for supporting the triangular area of ​​a retracted working surface, comprising a base 3, a slide 9, a motor 4 and a screw 7, characterized in that a plurality of hydraulic cylinders 2 are fixedly connected to the base 3 and the slide 9 respectively, the piston rod of the hydraulic cylinder 2 is connected to the top plate 1, the second mounting seat 15 is slidably connected in the base 3, the screw 7 is rotatably connected in the second mounting seat 14 through the first bearing 10, the screw 7 is fixedly connected to the inner ring of the first bearing 10, one end of the screw 7 is threadedly connected in the threaded tube 11, the threaded tube 11 is fixedly connected in the first mounting seat 8, and the first mounting seat 8 is slidably connected in the slide 9.

[0024] The bottom of the second mounting seat 14 is fixedly connected to a plurality of second optical axes 15 , which are slidably connected in the base 3 . The bottom of the second optical axis 15 is fixedly connected to one end of a first spring 16 , and the other end of the first spring 16 is fixedly connected in the base 3 .

[0025] The bottom of the first mounting seat 8 is fixedly connected to a plurality of first optical axes 12 , which are slidably connected in the slide seat 9 , and the bottom of the first optical axis 12 is fixedly connected to one end of the second spring 17 , and the other end of the second spring 17 is fixedly connected in the slide seat 9 .

[0026] The second mounting base 14 is fixedly connected to the motor 4 , the rotating shaft of the motor 4 is fixedly connected to the first gear 5 , the first gear 5 is meshedly connected to the second gear 6 , and the second gear 6 is fixedly connected to the screw 7 .

[0027] The base 3 is fixedly connected to a limit block 14 , and the limit block 13 is located between the base 3 and the slide 9 .

[0028] The working principle of the present invention is as follows: when the comprehensive mining support is withdrawn, the hydraulic cylinder 2 on the slide 9 is first started to make the top plate 1 press against the top of the triangular area. At this time, the comprehensive mining hydraulic support and other equipment can be withdrawn, the motor 4 is started to rotate forward, the motor 4 drives the screw 7 to rotate, and the base 3 moves in the direction away from the slide 9. A first spring 16 is provided between the base 3 and the screw 7, which is a non-rigid connection, and the friction with the ground during the movement is smaller; after the base 3 moves after the movement of the base 3 is completed, the hydraulic cylinder 2 on the base 3 is started, and the hydraulic cylinder 2 presses against the top plate 1. At this time, the hydraulic cylinder 2 on the slide 9 is recovered, and then the motor 4 is started to reverse, the motor 4 drives the screw 7 to rotate, and the slide 9 moves in the direction close to the base 3. A second spring 17 is provided between the slide 9 and the screw 7, which is a non-rigid connection. The friction with the ground during the movement is smaller, and this movement is repeated to complete the temporary support of the triangular area of ​​the withdrawn working face.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A hydraulic support for supporting the triangular area of ​​a withdrawn working surface, comprising a base (3), a slide (9), a motor (4) and a screw (7), characterized in that A plurality of hydraulic cylinders (2) are fixedly connected to the base (3) and the slide (9), respectively. The piston rods of the hydraulic cylinders (2) are connected to the top plate (1). The base (3) is slidably connected to the second mounting seat (14). The second mounting seat (14) is rotatably connected to the screw rod (7) through the first bearing (10). One end of the screw rod (7) is threadedly connected to the threaded tube (11). The threaded tube (11) is fixedly connected to the first mounting seat (8). The first mounting seat (8) is slidably connected to the slide (9).

2. The hydraulic support for supporting the triangular area of ​​a retreat working face according to claim 1, characterized in that: The bottom of the second mounting seat (14) is fixedly connected to a plurality of second optical axes (15), the second optical axes (15) are slidably connected in the base (3), the bottom of the second optical axes (15) is fixedly connected to one end of a first spring (16), and the other end of the first spring (16) is fixedly connected in the base (3).

3. The hydraulic support for supporting the triangular area of ​​a retreat working surface according to claim 2, characterized in that: The bottom of the first mounting seat (8) is fixedly connected to a plurality of first optical axes (12), the first optical axes (12) are slidably connected in the slide seat (9), the bottom of the first optical axis (12) is fixedly connected to one end of the second spring (17), and the other end of the second spring (17) is fixedly connected in the slide seat (9).

4. The hydraulic support for supporting the triangular area of ​​a retreat working face according to claim 1, characterized in that: The second mounting seat (14) is fixedly connected to the motor (4), the rotating shaft of the motor (4) is fixedly connected to the first gear (5), the first gear (5) is meshedly connected to the second gear (6), and the second gear (6) is fixedly connected to the screw (7).

5. The hydraulic support for supporting the triangular area of ​​a retreat working face according to claim 1, characterized in that: A limiting block (13) is fixedly connected to the base (3), and the limiting block (13) is located between the base (3) and the slide seat (9).

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