Coal retaining structure of coal mining machine

Abstract

The utility model relates to a coal retaining structure of a coal mining machine, which belongs to the technical field of coal mining equipment and comprises two connecting plates connected with a coal outlet of the coal mining machine, the two connecting plates are arranged in a mirror image manner, and rotatable retaining plates are mounted on the outer sides of the connecting plates; a coal outlet is formed in the lower end of the baffle; coal blocking strips are mounted at the lower end of the baffle and located on the periphery of the coal outlet; a first adjusting device is mounted between the baffle and the connecting plate; and second adjusting devices are mounted on the outer sides of the two baffles. The two baffles are adjusted through the first adjusting device and the second adjusting device, the impact resistance of the baffles is improved, the service life of a product is prolonged, meanwhile, a good coal blocking effect is achieved, and the coal leakage phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a coal retaining structure of a coal shearer. Background Art

[0002] Generally, in order to expand the coal cutting height range, adapt to the changes in coal seam thickness and the roof and floor, a coal shearer usually uses a coal cutting mechanism. In the coal cutting mechanism, the coal cutting drum is a key device. In order to cooperate with the coal cutting drum to complete the coal loading process, a coal retaining plate is required.

[0003] In the Chinese utility model patent with the publication number of CN202991041U, a baffle that can solve the problem of coal leakage is disclosed. However, in this technology, the baffle adopts an arc structure, and the bracket is directly fixedly connected to the baffle. This structure has the following defects:

[0004] 1. When a coal block impacts the baffle, the protruding part of its arc may be deformed. If the impact force is too large, the protruding part will undergo plastic deformation, and the baffle will be damaged;

[0005] 2. When a coal block impacts the baffle, since the bracket is directly fixedly in contact with the baffle, stress concentration will occur at the connection, accelerating the damage at the connection and affecting the service life of the baffle. Summary of the Utility Model

[0006] The utility model aims to solve the above technical problems and provides a coal retaining structure of a coal shearer.

[0007] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0008] A coal retaining structure of a coal shearer includes two connecting plates connected to the coal outlet of the coal shearer. The two connecting plates are arranged mirror-symmetrically, and rotatable baffles are installed on the outer sides of the connecting plates;

[0009] A coal outlet is opened at the lower end of the baffle;

[0010] A coal retaining strip is installed at the lower end of the baffle and around the coal outlet;

[0011] A first adjusting device is installed between the baffle and the connecting plate;

[0012] Second adjusting devices are installed on the outer sides of the two baffles.

[0013] Preferably, the baffle is of an arc structure.

[0014] Preferably, mounting holes are opened on the connecting plates, and the two connecting plates are fixedly connected to the outside of the coal outlet of the coal shearer through bolts.

[0015] Preferably, the first adjusting device includes a groove on one side of the connecting plate and a movable plate. A fixed shaft is installed in the groove. A rotating hole is formed on the movable plate and the fixed shaft is located in the rotating hole. A torsion spring is installed in the fixed shaft and the rotating hole.

[0016] Preferably, one end of the torsion spring is fixedly connected to the fixed shaft and the other end is fixedly connected to the inner wall of the rotating hole.

[0017] Preferably, the upper end of the baffle is fixedly connected to the movable plate.

[0018] Preferably, the second adjusting device includes a limiting plate connected to the baffle. A threaded hole is formed in the limiting plate. A bolt rod is threadedly connected in the threaded hole. A limiting ring is installed at one end of the bolt rod. A pulling spring is installed between the two limiting rings.

[0019] Preferably, fixing nuts are threadedly connected to the outer side of the bolt rod and on both sides of the limiting plate.

[0020] After adopting the above structure, the utility model has the following advantages:

[0021] The utility model adjusts the two baffles through the first adjusting device and the second adjusting device, improves the impact resistance of the baffles, prolongs the service life of the product, and at the same time has a good coal blocking effect and will not have coal leakage phenomenon.

[0022] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments and features, further aspects, embodiments and features of the utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a schematic structural diagram of the utility model;

[0025] Figure 2 is an exploded view of the first adjusting device of the utility model.

[0026] As shown in the figure: 1. Connecting plate; 2. Baffle plate; 3. Coal outlet; 4. Coal retaining strip; 5. First adjusting device; 501. Groove; 502. Fixed shaft; 503. Rotating hole; 504. Torsion spring; 505. Movable plate; 6. Second adjusting device; 601. Limiting plate; 602. Threaded hole; 603. Bolt rod; 604. Limiting ring; 605. Hook pulling spring; 7. Mounting hole. Detailed implementation mode

[0027] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0028] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] The following further describes the present utility model in detail in combination with the full text.

[0030] Combined with the attached Figure 1 and Figure 2 , a coal retaining structure for a shearer, including two connecting plates 1 connecting the coal outlet of the shearer. The two connecting plates 1 are arranged mirror-symmetrically. Rotatable baffle plates 2 are installed on the outer sides of the connecting plates 1. A coal outlet 3 is opened at the lower end of the baffle plate 2. A coal retaining strip 4 is installed around the coal outlet 3 at the lower end of the baffle plate 2. Mounting holes 7 are opened on the connecting plates 1. The two connecting plates 1 are fixedly connected to the outside of the coal outlet of the shearer by bolts. The baffle plate 2 is an arc-shaped structure, and the upper end of the baffle plate 2 is fixedly connected to the movable plate 505. Specifically, the connecting plate 1 is fixedly connected to the outside of the coal outlet of the shearer through bolts and the mounting holes 7. The coal mined by the shearer is discharged through the coal outlet, and then falls between the two baffle plates 2 and is discharged through the coal outlet 3. The baffle plate 2 is an arc-shaped structure, wider at the top and narrower at the bottom. When the coal passes through the coal outlet 3, it can be adjusted by the first adjusting device 5 and the second adjusting device 6, which can improve the impact resistance of the baffle plate 2 and extend the product life. The service life of the connection part can be greatly improved.

[0031] When the present utility model is specifically implemented, such as Figure 1 and Figure 2As shown in the figure, a first adjusting device 5 is installed between the baffle 2 and the connecting plate 1; the first adjusting device 5 includes a groove 501 on one side of the connecting plate 1 and a movable plate 505. A fixed shaft 502 is installed in the groove 501. A rotating hole 503 is formed on the movable plate 505 and the fixed shaft 502 is located in the rotating hole 503. A torsion spring 504 is installed in the fixed shaft 502 and the rotating hole 503. One end of the torsion spring 504 is fixedly connected to the fixed shaft 502 and the other end is fixedly connected to the inner wall of the rotating hole 503. Specifically, the coal mined by the coal shearer is discharged through the coal outlet, and then falls between the two baffles 2, and then is discharged through the coal outlet 3. When the coal passes between the two baffles 2, due to gravity, it will push the baffle 2 to move. The baffle 2 moves outside the fixed shaft 502 through the movable plate 505, and at the same time, the torsion spring 504 makes automatic adjustment.

[0032] When the present utility model is specifically implemented, as Figure 2 shown. Second adjusting devices 6 are installed on the outer sides of the two baffles 2. The second adjusting device 6 includes a limiting plate 601 connecting the baffle 2. A threaded hole 602 is formed on the limiting plate 601. A bolt rod 603 is threadedly connected in the threaded hole 602. A limiting ring 604 is installed at one end of the bolt rod 603. A pulling spring 605 is installed between the two limiting rings 604. Specifically, when the two baffles 2 rotate due to an external force, they can be adjusted through the pulling spring 605, which can improve the impact resistance of the baffle 2 and extend the service life of the product.

[0033] When the present utility model is specifically implemented, fixing nuts are threadedly connected to the outer side of the bolt rod 603 and on both sides of the limiting plate 601. Specifically, the bolt rod 603 can rotate and move in the threaded hole 602, driving the limiting ring 604 to adjust its position, so as to adjust the tensile force of the pulling spring 605.

[0034] When the present utility model is specifically implemented, the two torsion springs 504 can move the two baffles 2 away from or close to each other to achieve two states. When the torsion spring 504 moves the baffle 2 away, the pulling spring 605 is in a contracted state; when the torsion spring 504 moves the baffle 2 close, the pulling spring 605 is in a stretched state. The pulling directions of the pulling spring 605 and the torsion spring 504 for driving the two baffles 2 to move away from or close to each other are opposite. This effect can enable the two baffles 2 to automatically adjust and will not be stressed individually, thus extending the service life of the product.

[0035] Embodiment 1:

[0036] The connecting plate 1 is fixedly connected to the outside of the coal outlet of the coal shearer through bolts and mounting holes 7. The coal mined by the coal shearer is discharged through the coal outlet, and then falls between the two baffles 2 and is discharged through the coal outlet 3. When the coal passes through the coal outlet 3, it can be adjusted by the first adjusting device 5 and the second adjusting device 6. When the coal passes between the two baffles 2, due to gravity, it will push the baffle 2 to move. The baffle 2 moves outside the fixed shaft 502 through the movable plate 505, and at the same time, the torsion spring 504 makes automatic adjustment. When the two baffles 2 rotate due to external force, they can be adjusted by the hook spring 605, which can improve the impact resistance of the baffle 2 and extend the product life.

[0037] Embodiment 2:

[0038] In this embodiment compared with Embodiment 1, the bolt rod 603 can rotate and move in the threaded hole 602 to drive the position adjustment of the limit ring 604. The hook spring 605 is installed on the two limit rings 604 and rotates close to the limit plate 601 outside the bolt rod 603 through the fixing nut, thereby adjusting the elastic force of the hook spring 605.

[0039] The above describes the present invention and its implementation manners. This description is not restrictive, and only one of the implementation manners of the present invention is shown throughout the text. The actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A coal retaining structure for a coal mining machine, comprising two connecting plates (1) connecting a coal outlet of the coal mining machine, characterized in that: The two connecting plates (1) are arranged in a mirror-like manner, and a rotatable baffle (2) is installed on the outer side of each connecting plate (1); A coal outlet (3) is provided at the lower end of the baffle (2); A coal blocking bar (4) is installed at the lower end of the baffle (2) and around the coal outlet (3); A first adjusting device (5) is installed between the baffle plate (2) and the connecting plate (1); Second adjustment devices (6) are installed on the outer sides of the two baffles (2).

2. A coal retaining structure for a coal mining machine according to claim 1, characterized in that: The baffle (2) is an arc-shaped structure.

3. A coal retaining structure for a coal mining machine according to claim 1, characterized in that: The connection plate (1) is provided with a mounting hole (7), and the two connection plates (1) are fixedly connected to the outer side of the coal outlet of the coal mining machine by means of bolts.

4. A coal retaining structure for a coal mining machine according to claim 1, characterized in that: The first adjustment device (5) comprises a groove (501) on one side of the connecting plate (1) and a movable plate (505); a fixed shaft (502) is installed in the groove (501); a rotating hole (503) is provided on the movable plate (505) and the fixed shaft (502) is located in the rotating hole (503); and a torsion spring (504) is installed in the fixed shaft (502) and the rotating hole (503).

5. A coal retaining structure for a coal mining machine according to claim 4, characterized in that: One end of the torsion spring (504) is fixedly connected to the fixed shaft (502) and the other end is fixedly connected to the inner wall of the rotating hole (503).

6. A coal retaining structure for a coal mining machine according to claim 4, characterized in that: The upper end of the baffle (2) is fixedly connected to the movable plate (505).

7. The coal retaining structure of a coal mining machine according to claim 1, characterized in that: The second adjustment device (6) comprises a limit plate (601) connected to the baffle (2), a threaded hole (602) is provided on the limit plate (601), a bolt rod (603) is threadedly connected to the inner thread of the threaded hole (602), a limit ring (604) is installed at one end of the bolt rod (603), and a hook spring (605) is installed between the two limit rings (604).

8. A coal retaining structure for a coal mining machine according to claim 7, characterized in that: The outer side of the bolt rod (603) and the two sides of the limiting plate (601) are threadedly connected with fixing nuts.

Images