Individual hydraulic prop tilting prevention device for coal mine

Abstract

The utility model belongs to the technical field of mining equipment, and provides a single hydraulic prop tilting prevention device for a coal mine, which comprises two groups of hoop components, the two groups of hoop components are respectively clamped on the pipe walls of two adjacent hydraulic props, and the two groups of hoop components are fixedly connected through a first telescopic rod piece; and the auxiliary fixing assembly comprises a rotating sleeve rotationally connected to the first telescopic rod piece, one end of a second telescopic pipe piece is fixedly connected to the side wall of the rotating sleeve, a plurality of fixing pieces are arranged at the other end of the second telescopic pipe piece, pins are arranged in the fixing pieces in a sliding mode, and the pins are used for being inserted into the bottom of a roadway or the side wall of the roadway. According to the utility model, the hard connection between two adjacent hydraulic props can be realized, and meanwhile, the anti-falling safety coefficient of the hydraulic props can be improved through the mutual connection with the wall surface of a roadway.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining equipment, in particular to a single hydraulic prop anti-falling device for coal mines. Background Art

[0002] The single hydraulic prop is a single retractable prop that uses liquid pressure to generate working resistance and realizes lifting and unloading. As the most common support equipment for coal mining faces, single hydraulic props are widely used in the two-lane exits of coal mining faces, advance support and temporary support of other lanes. However, during use, they are prone to self-falling and tilting, and being pushed down by sudden roof pressure, which seriously affects construction and personnel safety. Therefore, it is very important to prevent the single hydraulic prop from falling.

[0003] In existing coal mine tunnels, steel wire ropes are usually used to connect adjacent single hydraulic pillars to achieve the anti-collapse effect. However, the strength of steel wire ropes is low and the anti-collapse effect is not good. Iron chains are also used for connection. Although the strength is enhanced, the iron chain still cannot achieve a hard connection between the two hydraulic pillars, and there is no connecting structure between the iron chain and the tunnel wall, so the anti-collapse safety factor is still low. Utility Model Content

[0004] The purpose of the utility model is to provide a single hydraulic prop anti-collapse device for coal mines to solve the above-mentioned problem and achieve the purpose of hard connection between two adjacent hydraulic props, while also being able to improve the anti-collapse safety factor by interconnecting with the tunnel wall.

[0005] To achieve the above purpose, the utility model provides the following solution: a single hydraulic prop anti-fall device for coal mines, comprising:

[0006] Two groups of hoop assemblies, the two groups of hoop assemblies are respectively clamped on the pipe walls of two adjacent hydraulic struts, and the two groups of hoop assemblies are fixedly connected by a first telescopic rod;

[0007] An auxiliary fixing assembly includes a rotating sleeve rotatably connected to the first telescopic rod, one end of the second telescopic tube is fixedly connected to the side wall of the rotating sleeve, and the other end of the second telescopic tube is provided with a plurality of fixings, and a pin is slidably provided in the fixing, and the pin is used to be inserted into the bottom of the tunnel or the side wall of the tunnel.

[0008] Preferably, the hoop assembly comprises two groups of semicircular hoop, one ends of the two groups of semicircular hoop are hinged, the other ends of the two groups of semicircular hoop are detachably connected by a bolt and nut assembly, the hydraulic support is fixedly connected between the two groups of semicircular hoop, and the semicircular hoop in the two groups of hoop assemblies are fixedly connected by the first telescopic rod.

[0009] Preferably, the first telescopic rod comprises a threaded sleeve and two groups of fixed screw rods, both ends of the threaded sleeve are respectively threadedly connected to one end of the two groups of fixed screw rods, the other ends of the two groups of fixed screw rods are respectively fixedly connected to the two semicircular hoops, and the rotating sleeve is rotatably sleeved on the threaded sleeve.

[0010] Preferably, an annular groove is formed on the outer wall of the threaded sleeve, an annular boss is fixedly connected to the inner wall of the rotating sleeve, and the annular boss is slidably connected in the annular groove.

[0011] Preferably, the second telescopic tube includes an auxiliary screw and an auxiliary threaded sleeve, one end of the auxiliary screw is fixedly connected to the side wall of the rotating sleeve, and the axis of the auxiliary screw is perpendicular to the axis of the rotating sleeve, the other end of the auxiliary screw is threadedly connected to one end of the auxiliary threaded sleeve, and a plurality of the fixings are arranged at an end of the auxiliary threaded sleeve away from the auxiliary screw.

[0012] Preferably, the fixing member includes a fixed oblique tube, one end of the fixed oblique tube is fixedly connected to the side of the side wall of the auxiliary threaded sleeve away from the auxiliary screw rod, the end of the fixed oblique tube away from the auxiliary threaded sleeve is slidably connected inwardly to the pin, a sliding groove is opened on the side wall of the fixed oblique tube along the axis of the pin, a knocking plate is slidably connected in the sliding groove, and the knocking plate is fixedly connected to the pin.

[0013] Compared with the prior art, the utility model has the following advantages and technical effects: on the whole, the utility model can quickly hard-connect two adjacent hydraulic pillars, and the anti-falling effect of multiple hydraulic pillars can be achieved by using several anti-falling devices of the present scheme. At the same time, the pin can be approached to the tunnel wall or the bottom of the tunnel through the second telescopic pipe fitting and inserted smoothly, so that the pin can be driven into the tunnel wall or the ground according to the actual practical position. The stability of the second telescopic pipe fitting and the first telescopic pipe fitting is improved by the pin, thereby improving the anti-falling safety factor of the hydraulic pillar. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the anti-fall device of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view in FIG.

[0017] Figure 3 for Figure 1 A partial enlarged view of B in FIG.

[0018] Figure 4 is a schematic diagram of the connection between the annular groove and the annular boss;

[0019] Figure 5 It is a schematic diagram of the utility model in which the pin is fixedly connected to the bottom of the tunnel;

[0020] Figure 6 It is a schematic diagram of the utility model in which the pin is fixedly connected to the side wall of the lane;

[0021] Among them, 1. semicircular hoop; 2. hydraulic support; 3. bolt and nut assembly; 4. fixed screw; 5. threaded sleeve; 6. rotating sleeve; 7. auxiliary screw; 8. auxiliary threaded sleeve; 9. fixed inclined tube; 10. slide groove; 11. pin; 12. knocking plate; 13. annular groove; 14. annular boss. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-Figure 6 The utility model provides a single hydraulic prop anti-falling device for coal mines, comprising:

[0025] Two sets of hoop assemblies, the two sets of hoop assemblies are respectively clamped on the pipe walls of two adjacent hydraulic struts 2, and the two sets of hoop assemblies are fixedly connected by a first telescopic rod;

[0026] The auxiliary fixing assembly includes a rotating sleeve 6 rotatably connected to the first telescopic rod, one end of the second telescopic tube is fixedly connected to the side wall of the rotating sleeve 6, and the other end of the second telescopic tube is provided with a plurality of fixings, and a pin 11 is slidably provided in the fixing, and the pin 11 is used to be inserted into the bottom or side wall of the tunnel.

[0027] The main function of the hoop assembly is to clamp on the hydraulic support 2, and realize the connection between the two hydraulic supports 2 through the first telescopic rod; the main function of the first telescopic rod is to realize the hard connection between the two hydraulic supports 2, and adapt to different spacings by changing its own length; the main function of the rotating sleeve 6 is to enable the second telescopic pipe to rotate around the first telescopic pipe, so that the pin 11 can be fixed on the bottom or side wall of the tunnel; the main function of the second telescopic pipe is to enable the pin 11 to smoothly contact the bottom or side wall of the tunnel. On the whole, the utility model can quickly hard connect two adjacent hydraulic supports 2, and the anti-falling effect of multiple hydraulic supports can be achieved by using several anti-falling devices of the present scheme. At the same time, the pin can be smoothly inserted into the tunnel wall or the bottom of the tunnel through the second telescopic pipe, so that the pin can be driven into the tunnel wall or the ground according to the actual practical position, and the stability of the second telescopic pipe and the first telescopic pipe is improved by the pin, thereby improving the anti-falling safety factor of the hydraulic support.

[0028] A further optimized solution is that the hoop assembly includes two groups of semicircular hoop 1, one ends of the two groups of semicircular hoop 1 are hinged, the other ends of the two groups of semicircular hoop 1 are detachably connected by a bolt and nut assembly 3, the hydraulic support 2 is fixedly connected between the two groups of semicircular hoop 1, and the half-circular hoop 1 in the two groups of hoop assemblies are fixedly connected by a first telescopic rod.

[0029] like Figure 2 As shown, a through hole is provided at one end of the semicircular hoop 1 away from the hinge shaft to ensure that the bolt can pass through smoothly. The two semicircular hoop 1 are separated and clamped on the hydraulic support 2, and then the free ends of the two semicircular hoop 1 are connected by the bolt and nut assembly 3. The fastening connection between the two semicircular hoop 1 and the hydraulic support 2 can be achieved by tightening the bolt and nut assembly 3.

[0030] A further optimized solution is that the first telescopic rod includes a threaded sleeve 5 and two groups of fixed screw rods 4, both ends of the threaded sleeve 5 are respectively threadedly connected to one end of the two groups of fixed screw rods 4, the other ends of the two groups of fixed screw rods 4 are respectively fixedly connected to two semicircular hoops 1, and the rotating sleeve 6 is rotatably sleeved on the threaded sleeve 5.

[0031] like Figure 1 and Figure 2 As shown, by causing relative rotation between the threaded sleeve 5 and the fixed screw rod 4 and changing the length of the fixed screw rod 4 extending out of the threaded sleeve 5, the distance between the two semicircular hoops 1 can be changed.

[0032] According to a further optimized solution, an annular groove 13 is provided on the outer wall of the threaded sleeve 5 , an annular boss 14 is fixedly connected to the inner wall of the rotating sleeve 6 , and the annular boss 14 is slidably connected in the annular groove 13 .

[0033] like Figure 4As shown, by providing the annular groove 13 and the annular boss 14 , it can be ensured that the rotating sleeve 6 only rotates around the axis of the threaded sleeve 5 and will not slide on the threaded sleeve 5 .

[0034] A further optimized solution is that the second telescopic pipe fitting includes an auxiliary screw rod 7 and an auxiliary threaded sleeve 8, one end of the auxiliary screw rod 7 is fixedly connected to the side wall of the rotating sleeve 6, and the axis of the auxiliary screw rod 7 is perpendicular to the axis of the rotating sleeve 6, the other end of the auxiliary screw rod 7 is threadedly connected to one end of the auxiliary threaded sleeve 8, and a plurality of fixings are arranged at an end of the auxiliary threaded sleeve 8 away from the auxiliary screw rod 7.

[0035] like Figure 1 As shown, the auxiliary threaded sleeve 8 is rotated to generate relative rotation between the auxiliary threaded sleeve 8 and the auxiliary screw 7, thereby changing the length of the auxiliary screw 7 extending out of the auxiliary threaded sleeve 8, and then adjusting the distance between the pin 11 and the threaded sleeve 5 to ensure that the pin can be smoothly inserted into the bottom or wall of the tunnel.

[0036] A further optimized solution is provided, in which the fixing part includes a fixed oblique tube 9, one end of which is fixedly connected to the side wall of the auxiliary threaded sleeve 8 away from the auxiliary screw rod 7, and the end of the fixed oblique tube 9 away from the auxiliary threaded sleeve 8 slides inwardly to connect with the pin 11, and a sliding groove 10 is opened on the side wall of the fixed oblique tube 9 along the axis of the pin 11, and a knocking plate 12 is slidably connected in the sliding groove 10, and the knocking plate 12 is fixedly connected to the pin 11.

[0037] like Figure 3 As shown, when the pin 11 needs to be inserted into the side wall or bottom of the tunnel, the operator can use a hammer to hammer the strike plate 12 downward along the fixed inclined tube 9. After being hammered, the strike plate 12 will drive the pin 11 to move outward along the fixed inclined tube 9 and insert into the wall or bottom of the tunnel. When the strike plate 12 moves to fit with the lower end side wall of the slide groove 10, the pin 11 can be used to stabilize the auxiliary threaded sleeve 8.

[0038] The working process of this embodiment is as follows:

[0039] like Figure 5 As shown, for a row of hydraulic pillars 2 located near the middle of the tunnel, the threaded sleeve 5 is rotated to adjust the distance between the semicircular hoops 1 located at both ends thereof, so that the semicircular hoops 1 can be smoothly put on the hydraulic pillars 2 and the semicircular hoops 1 directly connected to the fixed screw rod 4 fit with the side wall of the hydraulic pillar 2. Afterwards, the two hinged semicircular hoops 1 are clamped on the hydraulic pillar 2 by the bolt and nut assembly 3, and then the threaded sleeve 5 is rotated to form a hard connection between the two hydraulic pillars 2. Afterwards, the auxiliary screw rod 7 is placed in a vertical state, and the auxiliary threaded sleeve 8 is rotated to make the bottom of the fixed inclined pipe 9 contact with the bottom of the tunnel, and a hammer is used to hammer the knocking plate 12 to insert the pin into the tunnel ground, thereby enhancing the overall stability of the anti-falling device and improving the anti-falling safety factor;

[0040] like Figure 6 As shown, for a row of hydraulic pillars 2 located close to the tunnel surface, after a hard connection is formed between the two hydraulic pillars 2 according to the above process, the auxiliary screw rod 7 is rotated to tilt it toward the tunnel wall, and the auxiliary threaded sleeve 8 is rotated to make the bottom of the fixed inclined tube 9 contact the tunnel wall and make the auxiliary threaded sleeve 8 at a suitable tilt angle. Thereafter, the knocking plate 12 is hammered to insert the pin 11 into the tunnel wall, thereby forming a lateral pulling force between the tunnel wall to improve the overall stability of the anti-collapse device and the anti-collapse safety factor.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A single hydraulic prop anti-collapse device for coal mines, characterized in that: include: Two groups of hoop assemblies, the two groups of hoop assemblies are respectively clamped on the pipe walls of two adjacent hydraulic struts (2), and the two groups of hoop assemblies are fixedly connected via a first telescopic rod; An auxiliary fixing assembly, the auxiliary fixing assembly comprising a rotating sleeve (6) rotatably connected to the first telescopic rod, one end of a second telescopic tube being fixedly connected to the side wall of the rotating sleeve (6), a plurality of fixing members being arranged at the other end of the second telescopic tube, a pin (11) being slidably arranged inside the fixing member, the pin (11) being used to be inserted into the bottom of a tunnel or the side wall of the tunnel.

2. A single hydraulic prop anti-collapse device for coal mines according to claim 1, characterized in that: The hoop assembly comprises two groups of semicircular hoops (1), one ends of the two groups of semicircular hoops (1) are hinged, the other ends of the two groups of semicircular hoops (1) are detachably connected via a bolt and nut assembly (3), the hydraulic support (2) is fixedly connected between the two groups of semicircular hoops (1), and the semicircular hoops (1) in the two groups of hoop assemblies are fixedly connected via the first telescopic rod.

3. A single hydraulic prop anti-collapse device for coal mines according to claim 2, characterized in that: The first telescopic rod comprises a threaded sleeve (5) and two groups of fixed screw rods (4); the two ends of the threaded sleeve (5) are respectively threadedly connected to one end of the two groups of fixed screw rods (4); the other ends of the two groups of fixed screw rods (4) are respectively fixedly connected to the two semicircular hoops (1); and the rotating sleeve (6) is rotatably sleeved on the threaded sleeve (5).

4. A single hydraulic prop anti-collapse device for coal mines according to claim 3, characterized in that: An annular groove (13) is formed on the outer wall of the threaded sleeve (5), and an annular boss (14) is fixedly connected to the inner wall of the rotating sleeve (6), and the annular boss (14) is slidably connected in the annular groove (13).

5. The single hydraulic prop anti-collapse device for coal mines according to claim 1, characterized in that: The second telescopic pipe member comprises an auxiliary screw rod (7) and an auxiliary threaded sleeve (8); one end of the auxiliary screw rod (7) is fixedly connected to the side wall of the rotating sleeve (6), and the axis of the auxiliary screw rod (7) is perpendicular to the axis of the rotating sleeve (6); the other end of the auxiliary screw rod (7) is threadedly connected to one end of the auxiliary threaded sleeve (8); and a plurality of fixing members are arranged at an end of the auxiliary threaded sleeve (8) away from the auxiliary screw rod (7).

6. A single hydraulic prop anti-collapse device for coal mines according to claim 5, characterized in that: The fixing member comprises a fixed oblique tube (9), one end of the fixed oblique tube (9) is fixedly connected to a side of a side wall of the auxiliary threaded sleeve (8) away from the auxiliary screw rod (7), the end of the fixed oblique tube (9) away from the auxiliary threaded sleeve (8) is slidably connected inwardly to the pin (11), a sliding groove (10) is provided on the side wall of the fixed oblique tube (9) along the axis of the pin (11), a knocking plate (12) is slidably connected in the sliding groove (10), and the knocking plate (12) is fixedly connected to the pin (11).

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