Tail mechanical undercutting scraper conveying structure

Abstract

The utility model discloses a tail mechanical undercutting scraper conveying structure, which is characterized in that a connecting part is provided with a plurality of wire changing grooves, the tail mechanical undercutting scraper conveying structure is further provided with a coal mining machine, jacks are arranged on two sides of one end of the tail mechanical undercutting scraper conveying structure, a protective cover is arranged on the outer side of each jack, a middle groove is arranged in the middle of the connecting part, and the tail mechanical undercutting scraper conveying structure is connected with the middle groove. The tail is arranged at the tail, the connecting part is provided with a lifting part and a horizontal part in the horizontal direction, the horizontal height is gradually reduced from the tail to the middle groove in the horizontal angle, and in the overlook angle, the deviation angle of the axis of the whole formed by connecting the line changing grooves is 1 degree compared with the central axis of the tail. The utility model has the advantages that the coal mining efficiency is improved, the labor intensity of underground operation is reduced, and meanwhile, the coal mining safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of industrial mining, and in particular to an improved structure of a mining fully-mechanized mining and transporting device. BACKGROUND

[0002] With the continuous development of modern comprehensive coal mining mechanization, the existing scraper conveyor is matched with the coal mining machine, which is very important, and the previous requirement is that the coal mining machine can reach the triangular point of the coal wall roadway at the tail of the machine, which meets the use requirement. However, in the actual use process, due to the pressure of the roadway roof and the protrusion of the roadway floor, the floor of the return roadway needs to be manually processed, which requires a large amount of manual processing of the floor, otherwise the tail of the conveyor cannot move forward, which requires the center of the drum of the coal mining machine to walk to the tail of the conveyor, so that the floor of the tail does not need to be manually processed. SUMMARY

[0003] To solve the above problems, the utility model discloses a tail mechanical floor pulling scraper conveying structure.

[0004] The specific technical scheme is as follows:

[0005] A tail mechanical floor pulling scraper conveying structure, the connecting part of the tail mechanical floor pulling scraper conveying structure is provided with a plurality of variable line grooves, and a coal mining machine is further arranged on the tail mechanical floor pulling scraper conveying structure. The tail mechanical floor pulling scraper conveying structure is provided with a jack on both sides of one end, a jack shield is arranged outside the jack, a middle groove is arranged in the middle of the connecting part, a tail is arranged at the tail part, the connecting part is provided with a lifting part and a horizontal part in the horizontal direction, and the horizontal height gradually decreases from the tail to the middle groove in the horizontal angle. In the top view angle, the axis of the variable line grooves connected together forms an overall offset angle of 1° compared to the center axis of the tail.

[0006] The coal mining machine is arranged at the position segment of the lifting part, and the coal mining machine rocker arm and the jack shield are arranged with a spacing.

[0007] The upper part of the variable line groove comprises a rail seat, the rail seat is in a right-angled trapezoidal structure, and the included angle between the oblique side and the right angle side of the rail seat is 1°.

[0008] The number of the lifting parts is four, and the number of the horizontal parts is six.

[0009] The utility model has the advantages that by increasing the number of the variable line grooves between the middle groove and the tail, the structure of the scraper machine telescopic tail is changed so that the center of the drum of the coal mining machine can walk to the tail of the conveyor, so that the mechanical floor pulling replaces the manual floor pulling processing, improves the coal mining efficiency, reduces the labor intensity of the underground operation, and improves the safety of coal mining. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1This is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 for Figure 1 A top view of

[0012] Figure 3 The overall structural diagram of the cable duct is shown in FIG.

[0013] Figure 4 This is a schematic diagram of the position relationship between the jack guard and the shearer rocker arm;

[0014] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] A tail-end mechanical scraper conveying structure is provided, wherein a plurality of line-changing slots 1 are provided at the connecting part 6 of the tail-end mechanical scraper conveying structure, and a coal mining machine 2 is also provided on the tail-end mechanical scraper conveying structure, wherein the tail-end mechanical scraper conveying structure is provided with jacks 3 on both sides at one end, and jack guards 31 are provided on the outside of the jacks, a middle slot 4 is provided in the middle of the connecting part 6, and a tail 5 is provided at the tail, and the connecting part 6 is provided with a lifting part 7 and a horizontal part 8 in the horizontal direction. At a horizontal angle, the horizontal height gradually decreases from the tail 5 to the middle slot 4. At a top-down angle, the axis of the line-changing slots after being connected together to form a whole is offset by an angle of 1° compared to the central axis of the tail, that is, α is 1°; according to design and planning, the coal mining machine needs to be offset to the coal wall side by at least 70mm at the beginning, the offset angle is set to 1°, the slot body is 1500mm long, and according to the principle of trigonometric function, it is calculated that the displacement size of each line-changing slot is 24mm. Ten shearer ducts are located at the tail of the machine. These synergistically enable the shearer to shift 96mm further toward the coal wall, creating a channel for the shearer's rocker arm to move toward the tail, avoiding interference with surrounding structures.

[0017] When the coal shearer is in the elevated position, a distance is provided between the coal shearer rocker arm 21 and the jack shield 31 .

[0018] The upper part of the line changing trough includes a rail seat, which has a right-angled trapezoidal structure. The angle between the axis of the running wheel 1a on the rail seat and the central axis of the line changing trough is 1°.

[0019] The number of the raised portions is four, and the number of the horizontal portions is six.

[0020] The working principle of the utility model is: the transmission system is that the torque of the motor is transmitted to the sprocket shaft group through the shaft coupling and the speed reducer, thereby the scraper chain is pulled to move, a closed traction system is formed, and the coal is conveyed out of the working face according to the running direction from the tail to the head,

[0021] The machine tail mechanical bottoming is realized by changing the number and structure of the variable line grooves: under the condition that the variable line angle of the coal mining machine is unchanged, the number of the variable line grooves is increased, the structure of the variable line grooves is optimized and improved, the tail structure is optimized and improved, and finally the center of the drum of the coal mining machine can reach the end surface of the scraper machine tail, so that the machine tail mechanical bottoming is realized instead of manual bottoming. Specifically, the variable line amount of the variable line grooves between the middle groove and the tail is increased, so that the coal mining machine is offset to the coal wall side by at least 70mm, for example, if the number of the tail variable line grooves reaches 10 and the variable position size of each variable line groove is 24mm, the coal mining machine will be offset to the coal wall side by 96mm, meanwhile, the track seat of the tail transition groove and the tail baffle also participates in the variable line, so that the problem of the interference between the convex table of the rocking arm operation side of the coal mining machine and the arc surface of the tail main rib plate is solved.

[0022] Variable line groove function differential design: the track seat of part of the variable line grooves only changes the line without lifting, so that the coal mining machine has a larger bottoming amount; the track seat of another part of the variable line grooves not only changes the line, but also lifts, so that the coal mining machine smoothly slides the groove transition near the tail and successfully mines the coal.

Claims

1. A tail-end mechanical bottom scraper conveying structure, characterized by: A number of line-changing troughs are provided at the connection part of the mechanical bottom-pulling scraper conveying structure at the tail of the machine, and a coal mining machine is also provided on the mechanical bottom-pulling scraper conveying structure at the tail of the machine. The mechanical bottom-pulling scraper conveying structure at the tail of the machine is provided with jacks on both sides of one end, and jack guards are provided on the outside of the jacks. A middle trough is provided in the middle of the connection part, and a machine tail is provided at the tail. The connection part is provided with a lifting part and a horizontal part in the horizontal direction. At a horizontal angle, the horizontal height gradually decreases from the tail of the machine to the middle trough. At a top-down angle, the axis of the line-changing troughs connected together to form a whole is offset by 1° compared to the central axis of the tail of the machine.

2. The tail mechanical bottom scraper conveying structure according to claim 1 is characterized in that: When the coal mining machine is in the elevated position, a distance is provided between the coal mining machine rocker arm and the jack guard.

3. The tail mechanical bottom scraper conveying structure according to claim 1 is characterized in that: The upper portion of the line changing duct includes a rail seat, which has a right-angled trapezoidal structure, and the angle between the hypotenuse and the right-angled side of the rail seat is 1°.

4. The tail-end mechanical bottom-pulling scraper conveying structure according to claim 1 is characterized in that: The number of the raised portions is four, and the number of the horizontal portions is six.

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