Split type counterweight device of coal mining machine

Abstract

The utility model provides a split type counterweight device of a coal mining machine. The split type counterweight device comprises a left plate group, a middle plate group and a right plate group, wherein the left plate group comprises a left upper plate and a right upper plate; the left upper plate is of a slow angle structure; the left middle plate is arranged on the lower side of the left upper plate, left lifting hooks are arranged at the two ends of the left middle plate respectively, and the bottom of the side, close to the left upper plate, of the left middle plate is of an oblique angle structure; the left lower plate is arranged on the lower side of the left middle plate, the left lower plate is of a slope structure, and a left transition screw is arranged on the left lower plate; and the left wedge-shaped guide block is arranged at the end parts of the left middle plate and the left lower plate. The utility model has the following beneficial effects: 1, the weight is increased on the surface of the coal mining machine body, so that the vibration problem of the coal mining machine when the cutting resistance is large and a lot of coal seam gangues exist can be reduced; 2, a split counterweight is adopted, so that the machine body can be disconnected without disassembling the counterweight, and the whole machine can be disassembled; and 3, left and right wedge-shaped guide blocks are arranged to prevent the guard plate from being clamped to the side edge of the counter weight when the guard plate is in a limit position to cause interference.

Description

Technical Field

[0001] The utility model relates to the technical field of thin seam shearer equipment, and to the field of counterweight methods for thin seam shearers, and particularly to a split counterweight device for a thin seam shearer. Background Art

[0002] The spatial size of the fully mechanized mining face in thin seams is narrow, and the overall size of the three supporting machines is severely restricted. However, in the thin seam coal mining process, the shearer has a high speed, and needs to perform operations such as bottom breaking, roof breaking, gangue cutting, and passing through faults, which will generate great vibrations. The thin seam shearer is light in weight and poor in vibration resistance. In the face of complex and changeable working conditions, it is often necessary to increase the counterweight. Content of the Utility Model

[0003] Aiming at the defects in the prior art, the purpose of the utility model is to provide a split counterweight device for a shearer that solves the problems of light weight and poor vibration resistance of the shearer.

[0004] To solve the above technical problems, the split counterweight device for a shearer provided by the utility model includes a left plate group, a middle plate group, and a right plate group; wherein the left plate group includes: an upper left plate, and the upper left plate is of a slow angle structure; a middle left plate, the middle left plate is arranged under the upper left plate, and left lifting hooks are respectively arranged at both ends of the middle left plate, and the bottom of the middle left plate close to the upper left plate is of an oblique angle structure; a lower left plate, the lower left plate is arranged under the middle left plate, the lower left plate is of a slope structure, and left transition screws are arranged on the lower left plate; a left wedge-shaped guide block, and the left wedge-shaped guide block is arranged at the ends of the middle left plate and the lower left plate.

[0005] The left lifting hooks, the left transition screws, and the left wedge-shaped guide blocks are multiple.

[0006] The middle plate group includes: an upper middle plate; a middle plate, the middle plate is arranged under the upper middle plate, the bottom of the middle plate close to the upper middle plate is of an oblique angle structure, middle lifting hooks are respectively arranged at both ends of the middle plate, and middle transition screws are arranged on the middle plate;

[0007] A lower middle plate, and the lower middle plate is arranged under the left middle plate.

[0008] The middle lifting hooks and the middle transition screws are multiple.

[0009] The right plate group includes: a right upper plate which is of a slow-angle structure; a right middle plate which is arranged below the right upper plate, and right lifting hooks are respectively arranged at two ends of the right middle plate, and the bottom of one side of the right middle plate close to the right upper plate is of an oblique-angle structure; a right lower plate which is arranged below the right middle plate, and the right lower plate is of a ramp structure, and right transition screws are arranged on the right lower plate; and a right wedge-shaped guide block which is arranged at the ends of the right middle plate and the right lower plate.

[0010] The middle lifting hooks, the middle transition screws and the right wedge-shaped guide blocks are multiple.

[0011] The left plate group, the middle plate group and the right plate group are fixed on the coal shearer body through fixing screws.

[0012] It further includes an oil filling device hole, a short bolt shield hole, a hydraulic nut shield hole, a filter shield hole and a maintenance point hole.

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

[0014] 1. Adding weight on the surface of the coal shearer body can reduce the vibration problem when the cutting resistance of the coal shearer is large and there are many gangues in the coal seam.

[0015] 2. Adopting split weights can disassemble the body without removing the weights, and disassemble the whole machine.

[0016] 3. The left and right wedge-shaped guide blocks arranged prevent the guard plate from getting stuck on the side of the weight at the limit position, resulting in interference. Description of the Drawings

[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the utility model will become more obvious.

[0018] Figure 1 It is a schematic structural diagram of the split weight device of the coal shearer of the utility model Figure 1 ;

[0019] Figure 2 It is a schematic structural diagram of the left plate group of the split weight device of the coal shearer of the utility model;

[0020] Figure 3 It is a schematic structural diagram of the middle plate group of the split weight device of the coal shearer of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the pressure roller mechanism of the split weight device of the coal shearer of the utility model;

[0022] Figure 5 It is a schematic structural diagram of the left side of the split weight device of the coal shearer of the utility model;

[0023] Figure 6 This is the installation schematic diagram of the split counterweight device for the coal shearer of the present utility model. Specific embodiments

[0024] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made, and these all belong to the protection scope of the present utility model.

[0025] As Figures 1 to 6 shown, in combination with Figure 1 、 Figure 6 shown, the present invention discloses a split counterweight device for a thin coal seam shearer, which is composed of a left plate group 01, a middle plate group 02, a right plate group 03, lifting transition screws (left transition screw, middle transition screw, right transition screw), and lifting hooks (left lifting hook, middle lifting hook, right lifting hook). The split counterweight device is fixed on the coal shearer body through a plurality of fixing screws 0701. The left plate group 01, the middle plate group 02, and the right plate group 03 are respectively provided with an oil filling device hole 0702, a short bolt shield hole 0703, a hydraulic nut shield hole 0704, a filter shield hole 0705, and an inspection point hole 0706, which respectively correspond to the oil filling device, the short bolt shield, the hydraulic nut shield, the filter shield, and the inspection point on the coal shearer body.

[0026] In combination with Figure 2 shown, the left plate group 01 is composed of an upper left plate 0101, a middle left plate 0102, a lower left plate 0103, a left transition screw 0104, and a left lifting hook 0105. The upper left plate 0101 has a slow-angle structure. The bottom of the middle left plate 0102 on the side close to the upper left plate 0101 has an oblique-angle structure. The lower left plate 0103 has a slope structure. The left transition screw 0104 is connected to the middle left plate 0102 by welding. The end of the lower left plate 0103 is provided with a left wedge-shaped guide block 0106 in the shape of a wedge, which is connected to the middle left plate 0102 and the lower left plate 0103 by bolts. The left lifting hook 0105 is connected to the middle left plate 0102 by a threaded method, realizing convenient disassembly and assembly. The left plate group 01 has an opening feature, and the oil filling and maintenance of the coal shearer can be realized without disassembling the counterweight.

[0027] In combination with Figure 3 shown, the middle plate group 02 is composed of an upper middle plate 0201, a middle plate 0202, a lower middle plate 0203, a middle transition screw 0204, and a middle lifting hook 0205. It is connected to the middle plate 0202 by welding. The middle lifting hook 0205 is connected to the middle plate 0202 by a threaded method.

[0028] Combined Figure 4 As shown, the right plate group 03 is composed of an upper right plate 0301, a middle right plate 0302, a lower right plate 0303, a right transition screw 0304, and a right lifting hook 0305. The upper right plate 0301 has a slow-angle structure. The bottom of the side of the middle right plate 0302 close to the upper right plate 0301 has an oblique-angle structure. The lower right plate 0303 has a ramp structure. It is connected to the lower right plate 0303 by welding. Wedge-shaped right wedge guide blocks 0306 are provided at the ends of the middle right plate 0302 and the lower right plate 0303 and are connected by bolts. The right lifting hook 0305 is connected to the middle right plate 0302 by a threaded method. Under the premise of not disassembling the counterweight, refueling and maintenance of the shearer can be realized.

[0029] Refer to Figure 5 As shown, the split counterweight device for a thin-seam shearer is provided with a slow-angle structure, a ramp structure, an oblique-angle structure, and wedge-shaped guide blocks, namely, a left wedge guide block 0106 and a right wedge guide block 0306. The counterweight is inclined at a slow angle and an oblique angle on the coal wall side. Under the condition of minimizing the weight, the distance between the counterweight and the support is increased, the passing space during matching is increased, and the matching dimensions are optimized; the split counterweight is adopted. Slots and holes are opened at the connection nut of the shearer body. Without disassembling the counterweight, operations on the hydraulic nut can be carried out through the fueling device hole 0702, the short bolt shield hole 0703, the hydraulic nut shield hole 0704, the filter shield hole 0705, and the maintenance point hole 0706, etc., so as to disconnect the body without disassembling the counterweight and disassemble the whole machine. At the same time, in the case of difficult drilling of holes in the housing body, the hole position dimensions are optimized, the body lifting holes are borrowed, the screw dimensions are increased, and the fixing effect of the counterweight is improved; considering the needs of some customers to weld the counterweight to the body, the counterweight dimensions are optimized to avoid the original hole positions of the housing, and at the same time, lifting transition screws are designed to realize the liftability of the whole after welding fixation.

[0030] To solve the interference problem that occurs when the original guard plate is installed and the counterweight rocker arm rises, as the shearer rocker arm swings up and down, the spatial dimensions of the guard plate and the counterweight affect each other. The guard plate must be completely above the counterweight in space. Without changing the original drawing, mainly through the wedge-shaped guide blocks, namely, the left wedge guide block 0106 and the right wedge guide block 0306, it is prevented that the guard plate gets stuck to the side of the counterweight at the limit position, resulting in interference.

[0031] When designing a thin-seam machine, the body weight is relatively light. When encountering hard rock, gangue, and intercalated gangue, the reaction forces such as cutting resistance will cause changes in the overall rigidity of the shearer during operation, affecting the anti-vibration performance; increasing the weight on the surface of the shearer body can reduce the vibration problem when the cutting resistance of the shearer is large and there is a lot of coal seam gangue.

[0032] In summary, a split counterweight device for a thin coal seam shearer proposed by the present invention solves the problems of poor anti-vibration performance due to the light weight of the shearer and the compatibility problem of disassembly and overall hoisting. To enable the disassembly of the long screw without removing the counterweight and thus disassemble the whole machine, the counterweight is further decomposed, avoiding the installation positions of the long screw and the hydraulic nut, so that the disassembly and assembly of the whole machine are not affected by the counterweight. Especially in the case of difficult hoisting underground, it is easier to move the face.

[0033] The specific embodiments of the present utility model have been described above. It should be noted that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. Split-type weight device for shearer, characterized in that, It includes a left plate group, a middle plate group and a right plate group; Among them The left plate group includes: An upper left plate, and the upper left plate is of a slow-angle structure; A middle left plate, the middle left plate is arranged on the lower side of the upper left plate, left lifting hooks are respectively arranged at both ends of the middle left plate, and the bottom of the side of the middle left plate close to the upper left plate is of an oblique-angle structure; A lower left plate, the lower left plate is arranged on the lower side of the middle left plate, the lower left plate is of a slope structure, and left transition screws are arranged on the lower left plate; A left wedge guide block, and the left wedge guide block is arranged at the ends of the middle left plate and the lower left plate.

2. The split-type weight device for a coal shearer according to claim 1, wherein, The left lifting hooks, the left transition screws and the left wedge guide blocks are multiple.

3. The split-type counterweight device for a coal shearer according to claim 2, characterized in that, The middle plate group includes: An upper middle plate; A middle plate, the middle plate is arranged on the lower side of the upper middle plate, the bottom of the side of the middle plate close to the upper middle plate is of an oblique-angle structure, middle lifting hooks are respectively arranged at both ends of the middle plate, and middle transition screws are arranged on the middle plate; A lower middle plate, and the lower middle plate is arranged on the lower side of the middle left plate.

4. The split-type counterweight device for a coal shearer according to claim 3, characterized in that, The middle lifting hooks and the middle transition screws are multiple.

5. The split-type counterweight device for a coal shearer according to claim 4, wherein, The right plate group includes: An upper right plate, and the upper right plate is of a slow-angle structure; A middle right plate, the middle right plate is arranged on the lower side of the upper right plate, right lifting hooks are respectively arranged at both ends of the middle right plate, and the bottom of the side of the middle right plate close to the upper right plate is of an oblique-angle structure; A lower right plate, the lower right plate is arranged on the lower side of the middle right plate, the lower right plate is of a slope structure, and right transition screws are arranged on the lower right plate; A right wedge guide block, and the right wedge guide block is arranged at the ends of the middle right plate and the lower right plate.

6. The split-type counterweight device for a coal shearer according to claim 5, wherein, The middle lifting hooks, the middle transition screws and the right wedge guide blocks are multiple.

7. The split-type counterweight device for a coal shearer according to claim 6, wherein The left plate group, the middle plate group and the right plate group are fixed on the coal shearer body by fixing screws.

8. The split-type counterweight device for a coal shearer according to claim 7, wherein, It also includes an oil filling device hole, a short bolt shield hole, a hydraulic nut shield hole, a filter shield hole and a maintenance point hole.

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