Coal blocking device of coal mining machine

Abstract

The utility model discloses a coal blocking device of a coal mining machine in the technical field of coal mining machines, which comprises two groups of mounting plates, a left coal blocking plate and a right coal blocking plate are rotatably connected between the adjacent mounting plates, a telescopic coal blocking plate is slidably connected in the left coal blocking plate and the right coal blocking plate, openings are formed in the outer walls of the front sides of the left coal blocking plate and the right coal blocking plate, and the left coal blocking plate and the right coal blocking plate are arranged in the openings. A U-shaped box is installed on the outer side of the opening, an operating rod is slidably connected into the U-shaped box, a locking block is installed at the end, close to the opening, of the operating rod, a sliding plate is arranged on the operating rod and slidably connected with the inner wall of the U-shaped box, and two sets of reset springs are connected between the outer side face of the sliding plate and the inner wall of the U-shaped box. And a plurality of groups of locking holes are formed in the outer wall of the front end of the telescopic spillplate. According to the coal blocking device of the coal mining machine, the coal blocking area of the coal blocking device of the coal mining machine can be adjusted, the coal blocking device can be adjusted and used according to actual requirements, the left coal blocking plate and the right coal blocking plate can be attracted together, the coal blocking device of the coal mining machine can be stored when not used, the occupied space is small after storage, and the coal blocking device of the coal mining machine is good in portability.

Description

Technical Field

[0001] The utility model relates to the technical field of coal shearers, in particular to a coal retaining device for a coal shearer. Background Technique

[0002] A coal shearer is an important device for coal mining. It can extract underground coal. The coal shearer plays a crucial role in coal mining, improving the mining efficiency, reducing manual labor, and also enhancing safety.

[0003] The published patent with the publication number CN218293580U proposes a coal retaining device for a coal shearer, including a coal retaining plate for installation on the top of the coal shearer. A plurality of the coal retaining plates are provided. Two insertion holes arranged along the width direction of the coal retaining plate are opened on the side surfaces of adjacent two coal retaining plates in contact with each other. A threaded column is inserted into the insertion hole. First nuts for forming an integral body of a plurality of coal retaining plates are threadedly connected to both ends of the threaded column. Two clamping plates for installation on the top of the coal shearer are provided at the position near the coal rib on the lower side of the coal retaining plate. Removable support ears are installed on the outer sides of the upper surfaces of the two clamping plates away from each other. One threaded column is rotatably connected to the two support ears. A hydraulic cylinder for adjusting the inclination angle of the coal retaining plate is rotatably installed on the side of the lower surface of the coal retaining plate away from the clamping plate, preventing coal blocks falling from the coal rib from accumulating on the top of the coal shearer and impacting into the hydraulic support, and improving safety.

[0004] The above patent uses a coal retaining plate to retain coal. However, the coal retaining area of the coal retaining plate is limited and cannot be adjusted according to actual needs, so the practicability is general. Moreover, the coal retaining devices of most existing coal shearers occupy a large space, and it is not convenient to store the coal retaining devices together. The coal retaining device of the coal shearer is not convenient to carry and transport, and the portability is poor. For this reason, we propose a coal retaining device for a coal shearer. Summary of the Invention

[0005] The purpose of the utility model is to provide a coal retaining device for a coal shearer to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A coal retaining device for a coal shearer includes two groups of mounting plates. A left coal retaining plate and a right coal retaining plate are rotatably connected between adjacent mounting plates. A telescopic coal retaining plate is slidably connected inside the left coal retaining plate and the right coal retaining plate. Openings are provided on the front outer walls of the left coal retaining plate and the right coal retaining plate. A U-shaped box is installed outside the opening. An operating rod is slidably connected inside the U-shaped box. A locking block is installed at one end of the operating rod close to the opening. A sliding plate is provided on the operating rod. The sliding plate is slidably connected to the inner wall of the U-shaped box. Two groups of return springs are connected between the outer side surface of the sliding plate and the inner wall of the U-shaped box. A plurality of locking holes adapted to the locking block are provided on the front outer wall of the telescopic coal retaining plate.

[0008] Further: Ear plates are installed in the middle of the front and rear outer walls of the left coal baffle and the right coal baffle, and threaded holes are provided in the ear plates.

[0009] Further: An iron sheet is connected to the upper surface of the left coal baffle, and a magnetic layer adapted to the iron sheet is provided on the upper surface of the right coal baffle.

[0010] Further: A handle is installed on the outer wall of the telescopic coal baffle, and an anti-slip rubber sleeve is sleeved on the hand-held end of the handle.

[0011] Further: The end of the operating rod far away from the opening penetrates through the U-shaped box, and a pull ring is connected to the end of the operating rod far away from the opening.

[0012] Further: An anti-slip pad is provided on the outer surface of the locking block.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Through the sliding connection between the telescopic coal baffle and the cavity, the present utility model can adjust the coal baffle area of the coal cutter's coal baffle device, can be adjusted according to actual needs, and has good practicability. Through the action of the operating rod, the sliding plate and the return spring in the U-shaped box, the locking block can be connected to or separated from the corresponding locking hole, and the position of the telescopic coal baffle can be fixed to avoid the telescopic coal baffle from sliding, improving the stability of the coal baffle device of the coal cutter. Since the left coal baffle and the right coal baffle are rotatably connected to the mounting plate, and with the suction force between the iron sheet and the magnetic layer, the left coal baffle and the right coal baffle can be attracted together, and the coal baffle device of the coal cutter can be stored when not in use, occupying a small space after storage, and having good portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic cross-sectional view of the top view structure of the present utility model;

[0017] Figure 3 is the Figure 2 enlarged schematic structural diagram at A in the present utility model.

[0018] In the figure: 1, mounting plate; 2, left coal baffle; 3, right coal baffle; 4, ear plate; 5, threaded hole; 6, iron sheet; 7, magnetic layer; 8, telescopic coal baffle; 9, handle; 11, opening; 12, U-shaped box; 13, operating rod; 14, pull ring; 15, return spring; 16, sliding plate; 17, locking block; 18, locking hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0020] Please refer to Figures 1-3 , the present invention provides a technical solution: a coal retaining device for a shearer, including two groups of mounting plates 1. A left coal retaining plate 2 and a right coal retaining plate 3 are rotatably connected between adjacent mounting plates 1. A telescopic coal retaining plate 8 is slidably connected inside the left coal retaining plate 2 and the right coal retaining plate 3. Openings 11 are formed on the front outer walls of the left coal retaining plate 2 and the right coal retaining plate 3. A U-shaped box 12 is installed outside the opening 11. An operating rod 13 is slidably connected inside the U-shaped box 12. A locking block 17 is installed at one end of the operating rod 13 close to the opening 11. A sliding plate 16 is provided on the operating rod 13. The sliding plate 16 is slidably connected to the inner wall of the U-shaped box 12. Two groups of return springs 15 are connected between the outer side surface of the sliding plate 16 and the inner wall of the U-shaped box 12. Multiple locking holes 18 adapted to the locking block 17 are formed on the front outer wall of the telescopic coal retaining plate 8.

[0021] Both the left coal retaining plate 2 and the right coal retaining plate 3 are rotatably connected to the mounting plate 1 through a rotating shaft. During use, the left coal retaining plate 2 and the right coal retaining plate 3 are unfolded and used, so that the bottoms of the left coal retaining plate 2 and the right coal retaining plate 3 are attached to the use position and are installed by bolts cooperating with the ear plates 4 and the threaded holes 5. Through the sliding connection between the telescopic coal retaining plate 8 and the left coal retaining plate 2 and the right coal retaining plate 3, the coal retaining area of the left coal retaining plate 2 and the right coal retaining plate 3 can be adjusted, and the coal retaining area of the coal retaining device of the shearer can be adjusted, which can be adjusted according to actual needs and has good practicability. Through the connection or disconnection between the locking block 17 in the U-shaped box 12 and the corresponding locking hole 18, when the locking block 17 is connected to the corresponding locking hole 18, the position of the telescopic coal retaining plate 8 can be fixed to prevent the telescopic coal retaining plate 8 from sliding, improving the stability of the use of the coal retaining device of the shearer. When the locking block 17 is disengaged from the locking hole 18, after the position of the telescopic coal retaining plate 8 is no longer restricted, the telescopic coal retaining plate 8 can slide;

[0022] The U-shaped box 12 is fixedly connected to the outer walls at the front ends of the left coal baffle 2 and the right coal baffle 3. The operating rod 13 is fixedly connected to the sliding plate 16 and the locking block 17. When the telescopic coal baffle 8 slides, the operating rod 13 is pulled outward, the sliding plate 16 moves outward, the return spring 15 is compressed, and the locking block 17 is received in the U-shaped box 12 after passing through the opening 11. After determining the use position of the telescopic coal baffle 8, a certain set of locking holes 18 at the front end of the telescopic coal baffle 8 is aligned with the opening 11. After releasing the operating rod 13, the compressed return spring 15 can automatically return to its original position, enabling the locking block 17 to be connected to the corresponding locking hole 18 after passing through the opening 11, thus fixing the position of the telescopic coal baffle 8, preventing the telescopic coal baffle 8 from sliding outward, and improving the stability of the telescopic coal baffle 8 during use.

[0023] Preferably, an iron sheet 6 is connected to the upper surface of the left coal baffle 2, and a magnet layer 7 adapted to the iron sheet 6 is provided on the upper surface of the right coal baffle 3. Since the left coal baffle 2 and the right coal baffle 3 are rotatably connected to the mounting plate 1, with the suction force between the iron sheet 6 and the magnet layer 7, the left coal baffle 2 and the right coal baffle 3 can be attracted together, and the coal baffle device of the shearer can be stored when not in use, occupying a small space after storage, and having good portability.

[0024] Among them, preferably, ear plates 4 are installed in the middle of the front and rear outer walls of the left coal baffle 2 and the right coal baffle 3, and threaded holes 5 are provided in the ear plates 4. The ear plates 4 are fixedly connected to the left coal baffle 2 and the right coal baffle 3, and the connection of the threaded holes 5 with external bolts can install the coal baffle device of the shearer at the use position.

[0025] Preferably, a handle 9 is installed on the outer wall of the telescopic coal baffle 8, and an anti-slip rubber sleeve is sleeved on the hand-held end of the handle 9. The handle 9 facilitates the sliding of the telescopic coal baffle 8, and the anti-slip rubber sleeve plays an anti-slip role to prevent the hand from slipping off when holding the handle 9.

[0026] Preferably, the end of the operating rod 13 far away from the opening 11 penetrates through the U-shaped box 12, and a pull ring 14 is connected to the end of the operating rod 13 far away from the opening 11. The pull ring 14 facilitates the pulling of the operating rod 13. Embodiment

[0027] Refer to Figure 3 This embodiment is different from the first embodiment in that an anti-slip pad is provided on the outer surface of the locking block 17. The anti-slip pad plays an anti-slip role, improves the stability of the connection between the locking block 17 and the corresponding locking hole 18, and further improves the stability of the telescopic coal baffle 8 during use.

[0028] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A coal retaining device for a coal shearer, comprising two groups of mounting plates (1), characterized in that: There is a left coal baffle (2) and a right coal baffle (3) rotatably connected between adjacent mounting plates (1). A telescopic coal baffle (8) is slidably connected inside the left coal baffle (2) and the right coal baffle (3). Openings (11) are formed in the front outer walls of the left coal baffle (2) and the right coal baffle (3). A U-shaped box (12) is installed outside the opening (11). An operating rod (13) is slidably connected inside the U-shaped box (12), and a locking block (17) is installed at one end of the operating rod (13) close to the opening (11). A sliding plate (16) is provided on the operating rod (13). The sliding plate (16) is slidably connected to the inner wall of the U-shaped box (12), and two groups of return springs (15) are connected between the outer side surface of the sliding plate (16) and the inner wall of the U-shaped box (12). A plurality of locking holes (18) adapted to the locking block (17) are formed in the front outer wall of the telescopic coal baffle (8).

2. The coal retaining device of a coal shearer according to claim 1, characterized in that: Lugs (4) are installed in the middle of the front and rear outer walls of the left coal baffle (2) and the right coal baffle (3), and threaded holes (5) are formed in the lugs (4).

3. The coal retaining device of a coal shearer according to claim 1, characterized in that: An iron sheet (6) is connected to the upper surface of the left coal baffle (2), and a magnetic layer (7) adapted to the iron sheet (6) is provided on the upper surface of the right coal baffle (3).

4. The coal baffle device of a coal shearer according to claim 1, characterized in that: A handle (9) is installed on the outer wall of the telescopic coal baffle (8), and an anti-slip rubber sleeve is sleeved on the hand-held end of the handle (9).

5. The coal retaining device of a coal shearer according to claim 1, characterized in that: The end of the operating rod (13) far from the opening (11) penetrates through the U-shaped box (12), and a pull ring (14) is connected to the end of the operating rod (13) far from the opening (11).

6. The coal retaining device of a coal shearer according to claim 1, characterized in that: An anti-slip pad is provided on the outer surface of the locking block (17).

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