Mining hydraulic support convenient to adjust

Abstract

The utility model relates to the technical field of hydraulic supports, in particular to a mining hydraulic support convenient to adjust, which comprises a supporting base, a supporting side wall is fixedly connected to the edge of one side of the top surface of the supporting base, a supporting top frame is rotatably connected to the top of the supporting side wall, and first connecting lugs are fixedly connected to two sides of the middle of the bottom surface of the supporting top frame. The centers of the two first connecting lugs are jointly and rotationally connected with a first connecting shaft, the centers of the two sides of the top face of the supporting base are both fixedly connected with second connecting lugs, and the centers of the two connecting lugs are jointly and rotationally connected with a second connecting shaft. Compared with the prior art, the supporting device has the advantages that by rotating the transmission lead screw, the telescopic batten can be driven to slide in the guide through groove through thread rotation, so that the telescopic batten extends out of the supporting top frame, the supporting length of the top is changed, the supporting device can adapt to the top faces of mine tunnels with different widths, and the supporting area is exerted to the maximum extent; and in addition, adjustment can be carried out according to needs, and the practicability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a hydraulic support for mining which is easy to adjust. Background Art

[0002] The hydraulic support is a structure used to control the mine pressure at the coal mining face. The mine pressure acts on the hydraulic support in the form of external load. The hydraulic support is mainly composed of hydraulic cylinders, load-bearing structural parts, pushing devices, control systems and other auxiliary devices. It is mainly developed in the direction of strong, reliable, fast and automatic control to meet the needs of high-yield and efficient coal mining. To this end, we vigorously develop and promote electro-hydraulic automatic control technology, improve the fluid supply system, improve the support capacity and reliability of the support, and simplify the structure and operation.

[0003] The top surface structure of the current mining hydraulic supports is mostly fixed, and its supporting area is fixed, but the width of the mine tunnel top surface is not fixed. After this type of hydraulic support is placed, it cannot support the mine tunnel top surface as a whole, and even the space cannot accommodate another support, so there is inconvenience. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the utility model is to provide a mining hydraulic support that is easy to adjust, so as to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides an easily adjustable mining hydraulic support, including a support base, an edge of one side of the top surface of the support base is fixedly connected to a support side wall, the top of the support side wall is rotatably connected to a support top frame, both sides of the middle of the bottom surface of the support top frame are fixedly connected to first connecting ears, the centers of the two first connecting ears are rotatably connected to a first connecting shaft, the centers of both sides of the top surface of the support base are fixedly connected to second connecting ears, the centers of the two second connecting ears are rotatably connected to a second connecting shaft, a number of hydraulic push rods are rotatably connected between the first connecting shaft and the second connecting shaft, and the support top frame The surface is provided with a plurality of guide grooves, a transmission screw is rotatably connected to the center of the inner wall of the middle one of the plurality of guide grooves, and a guide rod is fixedly connected to the center of the inner walls of the remaining plurality of guide grooves, one end of the transmission screw passes through the center of one side of the outer wall of the supporting top frame, and the end of the transmission screw passing through the outer wall of the supporting top frame is fixedly connected to a handwheel, the inner walls of the plurality of guide grooves are slidably connected to telescopic strips, a threaded hole is provided at the center of the middle one of the plurality of telescopic strips and is threadedly connected to the transmission screw, guide holes are provided in the centers of the remaining plurality of telescopic strips and are slidably connected to the guide rod, and one end of the plurality of telescopic strips is commonly fixedly connected to a parallel plate.

[0007] Preferably, any of the above schemes has the lengths of several of the telescopic strips matching the lengths of the guide slots, the thicknesses of several of the telescopic strips matching the thickness of the supporting top frame, the top surfaces of several of the telescopic strips overlapping the top surface of the supporting top frame, and the widths of several of the telescopic strips matching the widths of the guiding slots.

[0008] The technical effect achieved by adopting the above solution is that the telescopic strip can be completely overlapped with the guide groove, thereby forming a flat top surface.

[0009] Preferably, any of the above schemes has a length of a plurality of guide bars that matches the length of the guide slot, and a length of the transmission screw on the inner wall of the guide slot that matches the length of the guide bar.

[0010] The technical effect achieved by adopting the above scheme is: matching the transmission length of the transmission screw with the guide length of the guide rod.

[0011] Preferably, any of the above schemes is that a first support plate is fixedly connected to the edge of the bottom surface of the supporting top frame away from the supporting side wall, and a second support plate is commonly fixedly connected to the edges of the bottom surfaces of several telescopic strips away from the parallel plate, and several of the first support plates are in contact with the bottom surfaces of several of the telescopic strips, and the top surface of the second support plate is in contact with the bottom surface of the supporting top frame.

[0012] The technical effect achieved by adopting the above scheme is that the mutual supporting strength between the plurality of telescopic strips and the supporting top frame can be improved by the first supporting plate and the second supporting plate supporting each other.

[0013] Preferably, from any of the above schemes, both sides of the top surface of the support base are fixedly connected with supports on one side away from the support side wall, and the tops of the two supports are inclined and fixed to both sides of the top of one side of the support side wall.

[0014] The technical effect achieved by adopting the above scheme is that the supporting strength of the supporting side wall can be improved by supporting the reinforced support.

[0015] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0016] The easily adjustable mining hydraulic support can drive the telescopic strip to slide inside the guide groove by rotating the transmission screw, so that the telescopic strip is extended out of the support top frame, thereby changing the support length of the top, so as to adapt to the top surfaces of mine tunnels of different widths, thereby maximizing the support area and improving the stability of the support. It can also be adjusted as needed, and has better practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model from a top view;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0020] In the figure: 1-support base, 2-support side wall, 3-support top frame, 4-guide through groove, 5-telescopic strip, 6-drive screw, 7-hand wheel, 8-first connecting ear, 9-first connecting shaft, 10-second connecting ear, 11-hydraulic push rod, 12-support, 13-parallel plate, 14-guide bar, 15-second connecting shaft, 16-threaded hole, 17-first support plate, 18-second support plate. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0022] Embodiment 1: Figures 1 to 3As shown, a mining hydraulic support that is easy to adjust includes a support base 1, an edge of one side of the top surface of the support base 1 is fixedly connected to a support side wall 2, the top of the support side wall 2 is rotatably connected to a support top frame 3, both sides of the middle of the bottom surface of the support top frame 3 are fixedly connected to first connecting ears 8, the centers of the two first connecting ears 8 are rotatably connected to a first connecting shaft 9, the centers of the two second connecting ears 8 are fixedly connected to second connecting ears 10 at both sides of the top surface of the support base 1, the centers of the two second connecting ears 10 are rotatably connected to a second connecting shaft 15, a plurality of hydraulic push rods 11 are rotatably connected between the first connecting shaft 9 and the second connecting shaft 15, and a plurality of guide grooves are provided on the surface of the support top frame 3 4, a transmission screw 6 is rotatably connected to the center of the inner wall of the middle one of the several guide through grooves 4, and a guide rod 14 is fixedly connected to the center of the inner walls of the remaining several guide through grooves 4, one end of the transmission screw 6 passes through the center of one side of the outer wall of the support top frame 3, and the end of the transmission screw 6 passing through the outer wall of the support top frame 3 is fixedly connected to the handwheel 7, the inner walls of the several guide through grooves 4 are slidably connected to the telescopic strips 5, the center of the middle one of the several telescopic strips 5 is provided with a threaded hole 16 and is threadedly connected to the transmission screw 6, the centers of the remaining several telescopic strips 5 are provided with guide holes and are slidably connected to the guide rod 14, and one end of the several telescopic strips 5 is commonly fixedly connected to the parallel plate 13.

[0023] As an optional technical solution of the utility model, the lengths of the plurality of telescopic strips 5 are adapted to the length of the guide slot 4, the thicknesses of the plurality of telescopic strips 5 are adapted to the thickness of the support top frame 3, the top surfaces of the plurality of telescopic strips 5 coincide with the top surface of the support top frame 3, and the widths of the plurality of telescopic strips 5 coincide with the width of the guide slot 4, so that the telescopic strips 5 can completely coincide with the guide slot 4, thereby forming a flat top surface.

[0024] As an optional technical solution of the present invention, the length of several guide rods 14 is adapted to the length of the guide groove 4, and the length of the transmission screw 6 on the inner wall of the guide groove 4 is adapted to the length of the guide rod 14, so that the transmission length of the transmission screw 6 matches the guide length of the guide rod 14.

[0025] As an optional technical solution of the present utility model, a first support plate 17 is fixedly connected to the edge of the bottom surface of the supporting top frame 3 away from the supporting side wall 2, and a second support plate 18 is commonly fixedly connected to the edge of the bottom surfaces of a plurality of telescopic strips 5 away from the parallel plate 13. The first support plates 17 are in contact with the bottom surfaces of the telescopic strips 5, and the top surfaces of the second support plates 18 are in contact with the bottom surface of the supporting top frame 3. By supporting each other with the first support plates 17 and the second support plates 18, the mutual supporting strength between the telescopic strips 5 and the supporting top frame 3 can be improved.

[0026] As an optional technical solution of the utility model, both sides of the top surface of the support base 1 are fixedly connected with support holders 12 on the side away from the support side wall 2, and the tops of the two support holders 12 are inclined and fixed to both sides of the top of one side of the support side wall 2. Through the reinforced support of the support holders 12, the supporting strength of the support side wall 2 can be improved.

[0027] A mining hydraulic support that is easy to adjust, the working principle is as follows:

[0028] 1) By extending and retracting a plurality of hydraulic push rods 11, the support angle of the support frame 3 can be adjusted;

[0029] 2) By rotating the hand wheel 7, the transmission screw 6 is driven to rotate, thereby driving the central telescopic strip 5 to extend, and the parallel plate 13 drives the remaining telescopic strips 5 to extend synchronously, thereby adjusting the support area of ​​the combination of the telescopic strip 5 and the supporting top frame 3 to adapt to the top surfaces of mine tunnels of different widths, thereby maximizing the support area.

[0030] To sum up, the easily adjustable mining hydraulic support can drive the telescopic strip 5 to slide inside the guide groove 4 by rotating the transmission screw 6 through threaded rotation, so that the telescopic strip 5 extends out of the supporting top frame 3, thereby changing the support length of the top, so as to adapt to the top surfaces of mine tunnels of different widths, thereby maximizing the support area and improving the stability of the support. It can also be adjusted as needed, and is more practical.

[0031] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic support for mining that is easy to adjust, characterized in that: The invention comprises a support base (1), wherein an edge of one side of the top surface of the support base (1) is fixedly connected to a support side wall (2), the top of the support side wall (2) is rotatably connected to a support top frame (3), first connection ears (8) are fixedly connected to both sides of the middle of the bottom surface of the support top frame (3), the centers of the two first connection ears (8) are rotatably connected to a first connection shaft (9), the centers of the two second connection ears (10) are fixedly connected to both sides of the top surface of the support base (1), the centers of the two second connection ears (10) are rotatably connected to a second connection shaft (15), a plurality of hydraulic push rods (11) are rotatably connected between the first connection shaft (9) and the second connection shaft (15), and a plurality of guide grooves (4) are provided on the surface of the support top frame (3), and the plurality of guide grooves (4) are connected to the guide grooves. A transmission screw (6) is rotatably connected at the center of the inner wall of the middle part of the through groove (4), and a guide rod (14) is fixedly connected at the centers of the inner walls of the remaining plurality of guide through grooves (4). One end of the transmission screw (6) passes through the center of one side of the outer wall of the support top frame (3), and one end of the transmission screw (6) passing through the outer wall of the support top frame (3) is fixedly connected to a hand wheel (7). The inner walls of the plurality of guide through grooves (4) are slidably connected to telescopic strips (5). A threaded hole (16) is provided at the center of the middle part of the plurality of telescopic strips (5) and is threadedly connected to the transmission screw (6). The centers of the remaining plurality of telescopic strips (5) are provided with guide holes and are slidably connected to the guide rod (14), and one end of the plurality of telescopic strips (5) is commonly fixedly connected to a parallel plate (13).

2. The easily adjustable mining hydraulic support according to claim 1, characterized in that: The lengths of the plurality of telescopic strips (5) are matched to the lengths of the guide slots (4), the thicknesses of the plurality of telescopic strips (5) are matched to the thickness of the support top frame (3), the top surfaces of the plurality of telescopic strips (5) coincide with the top surface of the support top frame (3), and the widths of the plurality of telescopic strips (5) are matched to the width of the guide slots (4).

3. The easily adjustable mining hydraulic support according to claim 2, characterized in that: The lengths of the plurality of guide bars (14) match the length of the guide slot (4), and the length of the transmission screw (6) on the inner wall of the guide slot (4) matches the length of the guide bar (14).

4. The easily adjustable mining hydraulic support according to claim 3, characterized in that: The edge of the bottom surface of the supporting top frame (3) away from the supporting side wall (2) is fixedly connected to a first support plate (17), and the edges of the bottom surfaces of a plurality of the telescopic strips (5) away from the parallel plate (13) are commonly fixedly connected to a second support plate (18), the plurality of the first support plates (17) are in contact with the bottom surfaces of the plurality of the telescopic strips (5), and the top surfaces of the second support plates (18) are in contact with the bottom surface of the supporting top frame (3).

5. The easily adjustable mining hydraulic support according to claim 4, characterized in that: Both sides of the top surface of the support base (1) away from the support side wall (2) are fixedly connected with support holders (12), and the tops of the two support holders (12) are both inclined and fixed to both sides of the top of one side of the support side wall (2).

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