Coal mine crushing device for coal mining

Abstract

The utility model provides a coal mine crushing device for coal mining, and relates to the technical field of coal mining, in particular to a crushing box for crushing coal, which comprises a protection component, a crushing component, a driving component, a driving component and a driving component, and the protection component is rotatably arranged in the crushing box and is used for discharging stones in the crushing box; the feeding assembly is fixedly arranged at the top of the crushing box, and the feeding assembly is used for adding coal; the discharging assembly is fixedly arranged at the bottom of the crushing box, and the discharging assembly is used for discharging coal in the crushing box; the stone discharging assemblies are symmetrically arranged in the crushing box and close to the bottom side, and the stone discharging assemblies are used for discharging stones in the crushing box; and the crushing assembly is rotationally arranged in the crushing box, and the crushing assembly is used for crushing the coal. According to the coal crushing device, stone in coal crushing is discharged, and the crushing roller cutter in the crushing device is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a coal crushing device used in coal mining. Background Art

[0002] Mining crushing equipment has the characteristics of large crushing ratio, uniform product particle size, simple structure, reliable operation, easy maintenance and economical operating costs. It is widely used in many departments such as mining, smelting, building materials, roads, railways, water conservancy and chemical industry. It can crush various materials with compressive strength not exceeding 320 MPa. General mining crushers include jaw crusher, hammer crusher, roll crusher, compound crusher, impact crusher, impact crusher, hammer crusher, cone crusher and mobile crusher.

[0003] In the prior art, such as the Chinese patent number CN202320845106.6, a coal mine crushing device used in coal mine mining, by setting a connecting plate, a two-way electric telescopic column, a moving block, a connecting rod, a connecting column, a connecting block, a baffle and a limit column for use in combination, achieves the advantage of facilitating the maintenance of the inside of the coal mine crushing device used in coal mine mining, and solves the problem that when the equipment inside the shell of the existing coal mine crushing device used in coal mine mining is damaged and needs to be replaced during maintenance, the shell of the coal mine crushing device used in coal mine mining is not easy to disassemble, which is time-consuming and labor-intensive and inconvenient for users to perform maintenance.

[0004] The above technical features have the following shortcomings: the service life of the current coal mine crushing device is limited. According to research, when coal is crushed, it is mixed with stones, which damages the crushing roller cutter in the coal mine crushing device. There is room for improvement. In view of this, a coal mine crushing device is proposed for coal mining to solve the above problems. Utility Model Content

[0005] The utility model aims at solving the above-mentioned shortcomings and proposes a coal mine crushing device for coal mining, which can discharge stones in coal crushing and prevent the crushing roller cutter in the crushing device from being damaged.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a coal mine crushing device used in coal mining, a crushing box for coal crushing, comprising:

[0007] A protection component, the protection component is rotatably arranged inside the crushing box, and the protection component is used to discharge stones inside the crushing box;

[0008] A feeding assembly, which is fixedly arranged on the top of the crushing box and is used to add coal;

[0009] A discharge assembly, which is fixedly arranged at the bottom of the crushing box and is used to discharge the coal inside the crushing box;

[0010] A stone discharge assembly, which is symmetrically arranged inside the crushing box near the bottom side, and is used to discharge stones inside the crushing box;

[0011] A crushing assembly is rotatably arranged inside a crushing box, and is used for crushing coal.

[0012] Preferably, the protection component includes a maintenance cover rotatably arranged on the outer wall of the crushing box, a rotating shaft is fixedly installed on the other side of the maintenance cover, a preset number of electric push rods are fixedly arranged on the outer wall of the rotating shaft, and a connecting plate is fixedly arranged at the telescopic end of the electric push rod.

[0013] Preferably, a pressure sensor is fixedly provided on one side of the connecting plate close to the electric push rod, and a crushing knife is fixedly provided on the other side of the connecting plate.

[0014] Preferably, the feed assembly includes a box cover fixedly mounted on the top of the crushing box, a feed barrel is fixedly provided through the interior of the box cover, symmetrical hydraulic push rods are fixedly provided through the interior of the box cover and on both sides of the feed barrel, and guide plates are fixedly provided at the telescopic ends of the hydraulic push rods.

[0015] Preferably, the discharge assembly is arranged through the bottom wall of the crushing box, and the discharge assembly is cylindrical.

[0016] Preferably, a fixing groove is provided on the side wall of the crushing box facing the stone discharge assembly.

[0017] Preferably, the crushing assembly includes a bracket fixedly arranged on the outer wall of the crushing box, a forward and reverse motor is fixedly arranged on the top of the bracket, a transmission wheel is fixedly arranged on the output shaft of the forward and reverse motor, a transmission belt is rotatably arranged on the outer wall of the transmission wheel, a crushing roller penetrating the side wall of the crushing box is arranged on the other side of the transmission wheel, the crushing roller is movably connected to the crushing knife, and the crushing roller is fixedly connected to the maintenance cover.

[0018] Compared with the prior art, the advantages and positive effects of the utility model are:

[0019] In the utility model, coal is added into the crushing box through the feeding assembly, and stones added by mistake are guided to the two crushing rollers by the guide plate. When the stones fall on the crushing rollers and the crushing knives, the pressure sensor detects the pressure change, and then the crushing knives are controlled to extend and shorten through different electric push rods on the two crushing rollers. At the same time, the forward and reverse motors are reversed, and the stones are driven by the crushing knives and the crushing rollers to be discharged from the stone discharge assembly, so as to avoid damage to the crushing knives, discharge the stones in the coal crushing, and prevent damage to the crushing rollers and knives in the crushing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a rear view schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the utility model;

[0023] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0024] Legend:

[0025] 1. Crushing box;

[0026] 2. Protective components; 21. Maintenance cover; 22. Rotating shaft; 23. Crushing knife; 24. Connecting plate; 25. Pressure sensor;

[0027] 3. Feeding assembly; 31. Box cover; 32. Feeding cylinder; 33. Hydraulic push rod; 34. Guide plate;

[0028] 4. Discharge components;

[0029] 5. Stone removal components;

[0030] 6. Crushing assembly; 61. Bracket; 62. Forward and reverse motor; 63. Transmission wheel; 64. Transmission belt; 65. Crushing roller. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0033] like Figure 1-4 As shown, the utility model provides a coal mining crushing device for coal mining, a crushing box 1 for coal crushing, comprising:

[0034] A protection component 2, which is rotatably disposed inside the crushing box 1, and is used to discharge stones inside the crushing box 1, and to prevent the crushing component from being damaged;

[0035] A feed assembly 3, which is fixedly arranged on the top of the crushing box 1 and is used to add coal;

[0036] A discharge assembly 4, which is fixedly arranged at the bottom of the crushing box 1 and is used to discharge the coal inside the crushing box 1;

[0037] The stone discharge assembly 5 is symmetrically arranged inside the crushing box 1 near the bottom side, and the stone discharge assembly 5 is used to discharge the stones inside the crushing box 1;

[0038] The crushing assembly 6 is rotatably arranged inside the crushing box 1, and the crushing assembly 6 is used for crushing coal.

[0039] The feeding component 3 is used to add coal and stones added by mistake into the crushing box 1, which are crushed by the crushing component 6. At the same time, the stones are discharged through the protection component 2 and the stone discharge component 5 to prevent damage to the crushing component 6.

[0040] It should be noted that, in the present embodiment, the protection assembly 2 includes a maintenance cover 21 rotatably arranged on the outer wall of the crushing box 1, and there are two maintenance covers 21. A rotating shaft 22 is fixedly installed on the other side of the maintenance cover 21. The maintenance cover 21 is fixedly connected to the rotating shaft 22 by bolts. There are two rotating shafts 22. A preset number of electric push rods are fixedly arranged on the outer wall of the rotating shaft 22. A connecting plate 24 is fixedly arranged at the telescopic end of the electric push rod, and the electric push rod is used to drive the connecting plate 24 to move.

[0041] Furthermore, a pressure sensor 25 is fixedly provided on one side of the connecting plate 24 close to the electric push rod, and a crushing knife 23 is fixedly provided on the other side of the connecting plate 24. The connecting plate 24 is used to drive the pressure sensor 25 and the crushing knife 23 to extend and retract, and the pressure sensor 25 is used to detect the pressure exerted on the crushing knife 23.

[0042] It should be noted that the feed assembly 3 includes a box cover 31 fixedly installed on the top of the crushing box 1, a feed barrel 32 is fixedly provided through the box cover 31, and symmetrical hydraulic push rods 33 are fixedly provided through the box cover 31 and on both sides of the feed barrel 32. A guide plate 34 is fixedly provided at the telescopic end of the hydraulic push rod 33. The hydraulic push rod 33 is used to drive the guide plate 34 to extend and retract, so that the coal is close to the crushing knife 23.

[0043] It should be noted that the discharge assembly 4 is disposed through the bottom wall of the crushing box 1, and the discharge assembly 4 is cylindrical. The discharge assembly 4 is used to discharge the crushed coal.

[0044] It needs to be further supplemented that a fixed groove is provided on the side wall of the crushing box 1 opposite to the stone discharge component 5, the stone discharge component 5 is used to discharge stones in both directions, and a control box is provided on the outer wall of the crushing box 1, the control box is used to control the hydraulic push rod 33 and the electric push rod, the control box is used to analyze the data of the pressure sensor 25, and the control box is used to control the rotation of the forward and reverse motor 62.

[0045] It should be further explained that the crushing assembly 6 includes a bracket 61 fixedly arranged on the outer wall of the crushing box 1, a forward and reverse motor 62 is fixedly arranged on the top of the bracket 61, a transmission wheel 63 is fixedly arranged on the output shaft of the forward and reverse motor 62, a transmission belt 64 is rotatably arranged on the outer wall of the transmission wheel 63, a crushing roller 65 penetrating the side wall of the crushing box 1 is arranged on the other side of the transmission wheel 63, the crushing roller 65 is movably connected to the crushing knife 23, the crushing roller 65 is fixedly connected to the maintenance cover 21, the forward and reverse motor 62 on the bracket 61 is used to drive the two crushing rollers 65 to rotate, the crushing roller 65 is used to drive the rotating shaft 22 and the crushing knife 23 to rotate, the rotating shaft 22 is fixedly connected to the crushing roller 65, the crushing roller 65 is a hollow column, a side plate is arranged on one end of the crushing roller 65 close to the transmission wheel 63, and the crushing roller 65 is sleeved on the outside of the connecting plate 24 and the electric push rod.

[0046] The method of use and working principle of this device are as follows: First, the guide plate 34 is driven to be extended and retracted by the hydraulic push rod 33, so that the guide plate 34 is close to the crushing knife 23, and the coal and the stones added by mistake pass through the guide plate 34 and fall between the two crushing knives 23 and the two crushing rollers 65, and then the crushing knife 23 is driven by the forward and reverse motors 62 to rotate. When the crushing knife 23 encounters stones, it is subjected to a greater pressure than when it encounters coal. The pressure sensor 25 detects the pressure encountered by the crushing knife 23 and transmits it to the inside of the control box. The control box makes a data analysis and the forward and reverse motors 62 reverse. At the same time, the rotating shaft 22 on the crushing roller 65 drives the electric push rod to rotate, and the electric push rod drives the crushing knife 23 to extend and retract on the crushing roller 65. The crushing knife 23 drives the stones to fall on the stone discharge assembly 5, and the stones added by mistake are discharged through the stone discharge assembly 5 and the fixed groove to prevent the stones from damaging the crushing knife 23 and the crushing roller 65.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A coal mining crushing device for coal mining, a crushing box (1) for coal crushing, characterized in that: include: A protection component (2), the protection component (2) being rotatably arranged inside the crushing box (1), and the protection component (2) being used to discharge stones inside the crushing box (1); A feeding assembly (3), the feeding assembly (3) being fixedly arranged on the top of the crushing box (1), and the feeding assembly (3) being used for adding coal; A discharge assembly (4), the discharge assembly (4) being fixedly arranged at the bottom of the crushing box (1), and the discharge assembly (4) being used to discharge the coal inside the crushing box (1); A stone discharge assembly (5), the stone discharge assembly (5) being symmetrically arranged inside the crushing box (1) near the bottom side, and the stone discharge assembly (5) being used to discharge stones inside the crushing box (1); A crushing assembly (6), wherein the crushing assembly (6) is rotatably arranged inside the crushing box (1), and the crushing assembly (6) is used for crushing coal.

2. A coal crushing device for coal mining according to claim 1, characterized in that: The protection component (2) comprises a maintenance cover (21) rotatably arranged on the outer wall of the crushing box (1), a rotating shaft (22) is fixedly installed on the other side of the maintenance cover (21), a preset number of electric push rods are fixedly arranged on the outer wall of the rotating shaft (22), and a connecting plate (24) is fixedly arranged at the telescopic end of the electric push rod.

3. A coal mine crushing device for coal mining according to claim 2, characterized in that: A pressure sensor (25) is fixedly provided on one side of the connecting plate (24) close to the electric push rod, and a crushing knife (23) is fixedly provided on the other side of the connecting plate (24).

4. A coal crushing device for coal mining according to claim 1, characterized in that: The feed assembly (3) comprises a box cover (31) fixedly mounted on the top of the crushing box (1), a feed barrel (32) is fixedly arranged inside the box cover (31), symmetrical hydraulic push rods (33) are fixedly arranged inside the box cover (31) and on both sides of the feed barrel (32), and a guide plate (34) is fixedly arranged at the telescopic end of the hydraulic push rod (33).

5. A coal crushing device for coal mining according to claim 1, characterized in that: The discharge assembly (4) is arranged through the bottom wall of the crushing box (1), and the discharge assembly (4) is cylindrical.

6. A coal crushing device for coal mining according to claim 1, characterized in that: A fixing groove is provided on the side wall of the crushing box (1) facing the stone discharge assembly (5).

7. A coal crushing device for coal mining according to claim 1, characterized in that: The crushing assembly (6) comprises a bracket (61) fixedly arranged on the outer wall of the crushing box (1), a forward and reverse motor (62) fixedly arranged on the top of the bracket (61), a transmission wheel (63) fixedly arranged on the output shaft of the forward and reverse motor (62), a transmission belt (64) rotatably arranged on the outer wall of the transmission wheel (63), a crushing roller (65) penetrating the side wall of the crushing box (1) is arranged on the other side of the transmission wheel (63), the crushing roller (65) is movably connected to the crushing knife (23), and the crushing roller (65) is fixedly connected to the maintenance cover (21).

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