Advanced support device for fully mechanized coal mining face

Abstract

The utility model relates to a forepoling device for a fully mechanized coal mining face, which aims at solving the technical problems that the current horizontal jet grouting pile is welded on a bracket, the horizontal jet grouting pile needs to be protected to be immovable in the fixing process, and the horizontal jet grouting pile is troublesome to be fixed and kept immovable at an arc-shaped surface, and comprises an arch-shaped supporting frame and a horizontal jet grouting pile, the plurality of horizontal jet grouting piles are respectively arranged on the arched side of the arched support frame through a positioning structure; the positioning structure comprises a fixed seat, a half clamping sleeve A and a half clamping sleeve B; the fixed seat is fixedly arranged on the arched side of the arched supporting frame; the half clamping sleeve A is welded at the outer end of the fixed seat; the half clamping sleeve B is in butt joint with the half clamping sleeve A; the two ends of the half clamping sleeve A are fixedly provided with connecting plates A respectively, the two ends of the half clamping sleeve B are fixedly provided with connecting plates B respectively, and the connecting plates A and the connecting plates B are fixedly connected through bolts and nuts. When the horizontal rotary jet grouting pile is welded and positioned, the horizontal rotary jet grouting pile is positioned on the arched side of the arched supporting frame, so that the horizontal rotary jet grouting pile is stably welded.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to an advanced support device for fully mechanized mining faces. Background Technology

[0002] A coal mine is an area where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, tunnels are typically dug underground to extract the coal; this is called an underground coal mine.

[0003] Fully mechanized coal mining refers to the mechanization of basic processes such as coal breaking, loading, transportation, support, and post-mining goaf treatment at the coal mining face. Such a working face is called a fully mechanized coal mining face, or simply a longwall mining face. Advance support is installed in longwall mining faces. Advance support is an auxiliary measure taken to ensure the stability of the mine tunnel excavation face, and it is used to excavate ahead of the working face. The main methods include pipe roofs, small guide pipes, and horizontal jet grouting piles.

[0004] In typical advanced support systems, horizontal jet grouting piles are welded to the support frame. During the fixing process, it is necessary to keep the horizontal jet grouting piles stationary, which is particularly troublesome when fixing them at curved surfaces.

[0005] In view of this, we propose an advanced support device for fully mechanized mining faces. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the actual needs, and provide an advanced support device for fully mechanized mining faces. This will solve the technical problem that it is difficult to keep the horizontal jet grouting piles stationary during the fixing process when they are welded onto the support and fixed at the arc-shaped surface.

[0007] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design an advanced support device for fully mechanized mining faces, including an arched support frame and horizontal jet grouting piles;

[0008] Several horizontal jet grouting piles are respectively arranged on the arched side of the arched support frame through positioning structures;

[0009] The positioning structure includes a fixed base, a half-clamping sleeve A, and a half-clamping sleeve B;

[0010] The fixing seat is fixed to the arched side of the arched support frame.

[0011] Half-clamp A is welded to the outer end of the fixed base;

[0012] Half-cap sleeve B is aligned with half-cap sleeve A;

[0013] The collars fitted on the horizontal jet grouting pile are respectively engaged with the semi-annular grooves opened on the inner walls of the semi-clamping sleeves A and B.

[0014] The two ends of the half-clamp A are respectively fixed with connecting plate A, and the two ends of the half-clamp B are respectively fixed with connecting plate B. The connecting plate A and the connecting plate B are fixedly connected by bolts and nuts.

[0015] Preferably, the outer sides of the connecting plate A and the connecting plate B are positioned and engaged by a limiting component;

[0016] The limiting component includes a positioning plate and a locking strip;

[0017] The top of the positioning plate is rotatably connected to the connecting plate B via two symmetrically arranged torsion spring hinges;

[0018] The locking strip is fixed to the inner bottom of the positioning plate;

[0019] The card strip is positioned and engaged with the bottom outer end of the connecting plate A.

[0020] Preferably, the top of the card strip engages with the card slot opened on the bottom side of the outer end of the connecting plate A.

[0021] Preferably, the inner side of the bottom end of the card strip is arc-shaped, and the inner side of the bottom end of the card strip corresponds to the outer end of the connecting plate A.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. This utility model, by setting a fixed seat, half clamp A, half clamp B, connecting plate A, connecting plate B, bolts and nuts, has the advantage of positioning the horizontal jet grouting pile on the arched side of the arched support frame when welding and positioning the horizontal jet grouting pile, so that the welding of the horizontal jet grouting pile remains stable. It solves the problem that it is troublesome to keep the horizontal jet grouting pile stationary during the fixing process when welding it to the support frame, especially when fixing it at the arc surface.

[0024] 2. This utility model, by setting a positioning plate, a locking strip, a torsion spring hinge, and a locking strip, has the advantage of positioning the connecting plate A and connecting plate B before they are connected, making the connection of the half-clamp A and half-clamp B stable and facilitating the subsequent installation and fixing of bolts and nuts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the positioning structure connection of this utility model;

[0027] Figure 3This is a schematic diagram of the positioning structure of this utility model;

[0028] Figure 4 For the present utility model Figure 3 Enlarged view of point A;

[0029] Figure 5 This is a schematic diagram of the connection structure of the limiting component of this utility model;

[0030] In the diagram: 1. Arched support frame; 2. Horizontal jet grouting pile; 3. Positioning structure;

[0031] 201. Ring;

[0032] 301. Fixed base; 302. Half-clamping sleeve A; 303. Half-clamping sleeve B; 304. Limiting assembly; 305. Connecting plate A; 306. Connecting plate B; 307. Bolt; 308. Nut;

[0033] 3041, Positioning plate; 3042, Torsion spring hinge; 3043, Locking strip;

[0034] 3051, Card slot. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0036] Example 1: An advanced support device for a fully mechanized mining face, see [link / reference] Figures 1 to 5 It includes an arched support frame 1 and horizontal jet grouting piles 2; several horizontal jet grouting piles 2 are respectively arranged on the arched side of the arched support frame 1 through positioning structures 3;

[0037] The positioning structure 3 includes a fixed seat 301, a semi-clamping sleeve A302, and a semi-clamping sleeve B303. The fixed seat 301 is fixed to the arched side of the arched support frame 1, and the semi-clamping sleeve A302 is welded to the outer end of the fixed seat 301. The semi-clamping sleeve B303 is connected to the semi-clamping sleeve A302. The collar 201 on the horizontal jet grouting pile 2 is engaged with the semi-annular grooves opened on the inner walls of the semi-clamping sleeve A302 and the semi-clamping sleeve B303 to pre-position the horizontal jet grouting pile 2. The two ends of the semi-clamping sleeve A302 are respectively fixed with connecting plates A305, and the two ends of the semi-clamping sleeve B303 are respectively fixed with connecting plates B306. The connecting plates A305 and B306 are fixedly connected by bolts 307 and nuts 308. The bolts 307 pass through the holes on the connecting plates A305 and B306, and the nut 308 is screwed onto the end through which the bolts 307 pass.

[0038] This utility model, by setting a fixing seat 301, a half clamp A302, a half clamp B303, a connecting plate A305, a connecting plate B306, a bolt 307, and a nut 308, has the advantage of positioning the horizontal jet grouting pile 2 on the arched side of the arched support frame 1 during welding and positioning, thus ensuring the stability of the horizontal jet grouting pile 2 during welding. It solves the problem that it is troublesome to keep the horizontal jet grouting pile 2 stationary during the fixing process when welding it onto the support frame, especially when fixing it at the arc surface.

[0039] Specifically, the outer sides of connecting plate A305 and connecting plate B306 are positioned and engaged by limiting component 304;

[0040] The limiting component 304 includes a positioning plate 3041 and a retaining strip 3043; the top of the positioning plate 3041 is rotatably connected to the connecting plate B306 through two symmetrically arranged torsion spring hinges 3042, and the elastic coefficient of the torsion spring on the torsion spring hinge 3042 is selected and used by the technical personnel of this profession according to the actual situation; the retaining strip 3043 is fixed to the bottom inner side of the positioning plate 3041; wherein, the retaining strip 3043 is limited and engaged with the bottom outer end of the connecting plate A305.

[0041] This utility model, by setting up a positioning plate 3041, a retaining strip 3043, a torsion spring hinge 3042, and a retaining strip 3043, has the advantage of first positioning the connecting plate A305 and the connecting plate B306 when they are connected, so that the half-clamping sleeve A302 and the half-clamping sleeve B303 are connected stably, which facilitates the subsequent installation and fixing of bolts 307 and nuts 308.

[0042] Furthermore, the top of the clip 3043 engages with the slot 3051 formed on the bottom outer side of the connecting plate A305. This engagement between the top of the clip 3043 and the slot 3051 ensures stability both forward and backward.

[0043] Furthermore, the inner side of the bottom end of the retaining strip 3043 is arc-shaped, corresponding to the outer end of the connecting plate A305. When the connecting plate A305 and the connecting plate B306 are mated, the arc-shaped inner side of the bottom end of the retaining strip 3043 contacts the outer end of the connecting plate A305, and the retaining strip 3043 can be pushed outward along the arc surface, facilitating the mating of the connecting plate A305 and the connecting plate B306.

[0044] Working principle: Using the device of this utility model, the collar 201 fitted on the horizontal jet grouting pile 2 is first locked in the semi-annular groove inside the semi-clamping sleeve A302. Then, the semi-clamping sleeve B303 is connected to the semi-clamping sleeve A302. During the connection process, the inner arc of the bottom end of the clamping strip 3043 contacts the outer end of the connecting plate A305 and can push the clamping strip 3043 outward along the arc surface. The positioning plate 3041 rotates outward under the action of the torsion spring hinge 3042 until the connecting plate A305 and the connecting plate B306 are connected. Under the action of the torsion spring hinge 3042, the positioning plate 3041 rotates back, and the top of the clamping strip 3043 is engaged with the clamping groove 3051. The bolt 307 passes through the hole on the connecting plate A305 and the connecting plate B306. The end through which the bolt 307 passes is screwed with the nut 308, completing the positioning of the horizontal jet grouting pile 2. Then, the subsequent welding is carried out.

[0045] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A kind of fully mechanized coal face advance support device, including arch support frame (1), it is characterized in that, Also include: A number of horizontal rotary jet piles (2) are arranged on the arch side of the arch support frame (1) through positioning structure (3) respectively; The positioning structure (3) comprises: Fixed seat (301), fixed to the arch side of the arch support frame (1) Half sleeve A (302), welded to the outer end of the fixed seat (301); Half sleeve B (303), butt joint with half sleeve A (302); Wherein, the sleeve ring (201) sleeved on the horizontal rotary jet pile (2) is respectively matched with the half ring groove opened in the inner wall of the half sleeve A (302) and half sleeve B (303); Wherein, the two ends of the half sleeve A (302) are respectively fixed with the connecting plate A (305), and the two ends of the half sleeve B (303) are respectively fixed with the connecting plate B (306), and the connecting plate A (305) and the connecting plate B (306) are fixedly connected through the bolt (307) and the nut (308).

2. The device according to claim 1, characterized in that, The outer side of the connecting plate A (305) and the connecting plate B (306) is positioned and matched through the limiting assembly (304); The limiting assembly (304) comprises: The top end of the positioning plate (3041) is rotatably connected with the connecting plate B (306) through two symmetrically arranged torsion spring hinges (3042); The clamping strip (3043) is fixedly arranged on the inner side of the bottom of the positioning plate (3041); Wherein, the clamping strip (3043) is limited and matched with the bottom side of the outer end of the connecting plate A (305).

3. The device according to claim 2, characterized in that, The top of the clamping strip (3043) is clamped and matched with the clamping groove (3051) opened in the bottom side of the outer end of the connecting plate A (305).

4. The device according to claim 2, characterized in that, The bottom end of the clamping strip (3043) is arc-shaped, and the bottom end of the clamping strip (3043) is corresponding to the outer end of the connecting plate A (305).

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