Machine head and tail transmission part with chain wheels in low arrangement

Abstract

The utility model provides a machine head and tail transmission part with low chain wheels, which comprises a machine head frame and a machine tail frame, each of the machine head frame and the machine tail frame comprises a machine body, a chain wheel shaft group is arranged on each machine body, and the side part of each machine body is connected with a power part; the chain wheel shaft sets are driven by the corresponding power parts to rotate. In at least one of the machine head frame and the machine tail frame, a power transmission mechanism with constant rotating speed is arranged between an output shaft of the power part and an input shaft of the chain wheel shaft group; and the axis of the input shaft of the chain wheel shaft group is lower than the axis of the output shaft of the power part. According to the utility model, the height of the center of the chain wheel shaft group is reduced on the premise of keeping the height of the power part unchanged through the power transmission mechanism of which the rotating speed is unchanged or the rotating speed ratio is 1: 1, so that the heights of the headstock and the tailstock corresponding to the chain wheel group are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the scraper conveyor field, concretely relates to a machine head tail transmission part of low arrangement of sprocket. BACKGROUND

[0002] As shown in 1-2 of the drawing, Figure 1 It is the schematic diagram of coal mining equipment in the roadway. Wherein a. support, b. coal winning machine, c. scraper, d. machine lane. Figure 2 It is Figure 1 The enlarged view of the scraper part in the coal winning machine. A. coal winning machine rocker arm, B. transition groove, C. coal winning machine drum, D. triangular coal, E. machine head, F. sprocket center. High-power scraper transport equipment, motor and reducer power is big, the volume is big, because the reducer and sprocket engage, the volume of reducer is big, and the height of sprocket center F needs to be relatively high to contain the reducer. The height of sprocket center F is higher. If the sprocket center is high, the machine head tail frame and the transition groove will be high, and the coal winning machine is ridden on the scraper, and when the rocker arm swings down, if the machine head tail frame and the transition groove are high, when the coal winning machine walks to the machine head or the machine tail, the rocker arm swing down is easy to interfere with the machine head tail frame and the transition groove. When the cutting motor of the rocker arm interferes with the transition groove of the scraper or the machine head tail frame, it is the lowest position of the rocker arm swing down. If the drum cannot cut the coal completely at this time, a triangular area of coal will be left, which is called triangular coal D. Generally, the mine side requires not only to cut the triangular coal completely but also to have the bottom amount.

[0003] The underfoot amount refers to the vertical depth of the lowest cutting tooth of the drum beyond the bottom plate of the scraper when the rocker arm of the coal mining machine is lowered to the limit position. The underfoot amount design is to cut the bottom plate of the working face by the coal mining machine, so that the equipment is suitable for different geological conditions, especially the triangular area at the machine head (tail), and reasonable underfoot amount can make the machine head and tail advance smoothly, which helps the rapid advance of the working face. In actual matching, the user of the coal mine pays more attention to the underfoot amount of the coal mining machine, especially the underfoot amount at the machine head (tail). The cutting drum of the coal mining machine cannot reach the limit position of the coal wall at the machine head and tail positions of the scraper, the underfoot amount is insufficient, the coal wall cannot be completely cut through, leaving triangular coal, which needs to be cleaned up manually, causing the scraper and support to advance unsmoothly to the coal wall side; and the bottom plate to be pushed away is large in size, increasing the frictional resistance between the scraper and the bottom plate, making the pushing work time-consuming and laborious, and reducing the pushing efficiency; the machine tail tight chain work is a manual operation, which has a large mechanical impact and is not conducive to personal safety. The patent CN118419485A discloses a low-type scraper conveyor for coal mining working face in underground coal mine, which realizes a large reduction in the height of the machine body of the scraper conveyor by adjusting the structures of the middle trough, the machine head and the machine tail. However, there are many adjustment mechanisms, and the structure is complex. Moreover, the center of the sprocket and the center of the reducer are at the same height in the existing structure, such as the structure in the machine head transmission part of the end-discharging type scraper conveyor disclosed in the patent CN218230543U. The large-power reducer is large in size, resulting in a high center of the sprocket and a high frame body. The high frame body at the machine head and tail causes the drum to have no underfoot amount at the machine head and tail, and even leaves triangular coal. After the coal mining machine finishes cutting a coal wall, the forward movement of the scraper and the hydraulic support along the advancing direction of the working face is blocked. The triangular coal needs to be manually dug out and loaded into the chute of the scraper. The efficiency is low, and the safety of the personnel cannot be guaranteed. SUMMARY

[0004] The utility model provides a machine head and tail transmission part of low arrangement of sprocket.

[0005] The utility model discloses a machine head and tail transmission part of low arrangement of sprocket.

[0006] The power part includes a motor and a reducer, the output shaft of the power part is the output shaft of the reducer, one side of the housing of the power transmission mechanism is fixedly connected with the side part of the machine body, and the other side is fixedly connected with the housing of the reducer.

[0007] The power transmission mechanism is a 1:1 gear box with meshing gears inside, the transmission ratio of the 1:1 gear box is 1:1, and the shell of the speed reducer is fixedly connected with the shell of the 1:1 gear box.

[0008] The first shaft and the second shaft are arranged in parallel inside the 1:1 gear box, the input gear is arranged on the first shaft, and the output gear meshing with the input gear is arranged on the second shaft; one end of the first shaft extends out of the 1:1 gear box and is connected with the output shaft of the speed reducer through a spline; the second shaft is connected with the input shaft of the sprocket shaft set through a spline at one end close to the sprocket shaft set; the matching position of the first shaft and the output shaft of the speed reducer is higher than the matching position of the second shaft and the input shaft of the sprocket shaft set.

[0009] The side surface of the fuselage of the tail frame of the head frame is provided with a connecting plate, the connecting plate comprises a left vertical plate, a right vertical plate and at least one connecting piece connecting the left vertical plate and the right vertical plate, and the connecting plate is provided with a sprocket hole through which the input shaft of the sprocket shaft set passes; the left vertical plate is fixedly connected with the vertical plate of the side surface of the fuselage, and the right vertical plate is fixedly connected with the shell of the 1:1 gear box; the 1:1 gear box is provided with a through hole corresponding to the second shaft, and the input shaft of the sprocket shaft set is connected with the second shaft through a spline through the sprocket hole on the connecting plate.

[0010] Compared with the prior art, the power transmission mechanism with constant speed or speed ratio of 1:1 is used to transmit power of the power part to the sprocket shaft set, and the height of the axis of the sprocket shaft set is lower than the height of the axis of the output end of the power part through the power transmission mechanism; under the premise of keeping the height of the power part unchanged, the height of the center of the sprocket shaft set is reduced, so that the height of the head frame and the tail frame corresponding to the sprocket set is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic view of a coal mining machine arranged in a roadway.

[0012] Figure 2 It is Figure 1 It is an enlarged view of the head part of

[0013] Figure 3 It is a schematic view of the structure principle of the utility model.

[0014] Figure 4 It is a view of the 1:1 gear box from the side of the speed reducer.

[0015] Figure 5 It is Figure 4 It is a top view of

[0016] Figure 6 It is a schematic view of the sprocket shaft set.

[0017] Figure 7 is a schematic view of a coupling plate.

[0018] Figure 8 is a left view of Figure 7

[0019] Figure 9 is a right view of Figure 8

[0020] wherein 1 is a machine body, 2 is a chain wheel shaft set, 3 is a coupling plate, 31 is a left vertical plate, 32 is a right vertical plate, 33 is a connecting piece, 34 is a chain wheel hole, 4 is a speed reducer, 5 is a 1:1 gear box, 6 is a first shaft, 7 is a second shaft, 8 is an input gear, and 9 is an output gear. DETAILED DESCRIPTION

[0021] In the present application, unless otherwise clearly specified and limited, the technical terms used in the present application should be understood as the common meanings understood by the skilled in the art. The terms "connected", "connected", "fixed", "provided" and the like should be understood in a broad sense, which can be fixed connection, can also be detachable connection, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be mechanical connection, or electrical connection. Unless otherwise clearly specified and limited, the first feature is "on" or "below" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above" or "above" or "above" the second feature can be directly above or obliquely above the first feature relative to the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below" or "below" or "below" the second feature can be directly below or obliquely below the first feature relative to the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. Relationship terms such as first, second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. The terms used in the description, such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0022] The technical scheme of the present application will be described clearly and completely in combination with the drawings and specific embodiments. As Figures 1-9 ​​As shown, a sprocket low arrangement of head tail transmission part, including head frame and tail frame, the head frame and tail frame all include the respective fuselage, each of the fuselage is provided with sprocket shaft group 2, the fuselage side power part is connected;The sprocket shaft group 2 is driven by the corresponding power part rotation. Head frame or tail frame at least one or all have the following changes: the output shaft of the power part and the input shaft of the sprocket shaft group 2 are provided with power transmission mechanism with constant speed;The height of the axis of the input shaft of the sprocket shaft group 2 is lower than the height of the axis of the output shaft of the power part. The utility model discloses a power transmission mechanism with constant speed or transmission ratio 1:1, which transmits power of the power part to the sprocket shaft group 2;And the power transmission mechanism makes the height of the axis of the sprocket shaft group 2 lower than the height of the axis of the output shaft of the power part;Under the premise of keeping the height of the power part unchanged, the height of the center of the sprocket shaft group 2 is reduced, thereby the height of the corresponding head frame and tail frame of the sprocket group is reduced. The power part is generally arranged on the side of the fuselage of the head frame and tail frame away from the shearer rocker arm. When the shearer rocker arm moves, it will be pressed on the fuselage. The height of the head frame and tail frame will affect the height of the shearer rocker arm. The power part is located on the side of the fuselage, which does not affect the shearer rocker arm. The utility model can not only install high-power and large-size power parts (such as motors and reducers 4), but also make the fuselage low, which does not affect the swing of the shearer rocker arm. After the height of the fuselage is reduced, the swing of the shearer rocker arm is not affected. The power transmission mechanism can be a common mechanism, such as synchronous belt transmission mechanism and gear transmission mechanism, as long as the transmission ratio and the height difference of the input and output shafts can be met.

[0023] The power part includes a motor and a reducer 4, the output shaft of the power part is the output shaft of the reducer 4, one side of the housing of the power transmission mechanism is fixedly connected with the side of the fuselage, and the other side is fixedly connected with the housing of the reducer 4. The side of the fuselage can be provided with a vertical plate for fixing other components.

[0024] The power transmission mechanism is a 1:1 gear box 5 with meshing gears inside, the transmission ratio of the 1:1 gear box 5 is 1:1, and the housing of the reducer 4 is fixedly connected with the housing of the 1:1 gear box 5. The 1:1 gear box 5 can be a one-stage gear transmission or a multi-stage gear transmission. The housing on the side of the output shaft of the reducer 4 and the housing of the 1:1 gear box 5 can be fixedly connected by bolts. Of course, other detachable connection methods can also be used for connection.

[0025] The first shaft 6 and the second shaft 7 are arranged in parallel in the 1:1 gearbox 5, the input gear 8 is arranged on the first shaft 6, and the output gear 9 engaged with the input gear 8 is arranged on the second shaft 7; one end of the first shaft 6 extends out of the 1:1 gearbox 5 and is connected with the output shaft of the reducer 4 through spline; the second shaft 7 is connected with the input shaft of the sprocket shaft set 2 through spline near one end of the sprocket shaft set 2; the matching position of the first shaft 6 and the output shaft of the reducer 4 is higher than the matching position of the second shaft 7 and the input shaft of the sprocket shaft set 2. The input shaft of the sprocket shaft set 2 is the center shaft. There are many ways to connect through spline. For example, the output shaft of the reducer 4 is provided with internal spline, and the end of the first shaft 6 extending out of the 1:1 gearbox 5 is provided with external spline. The second shaft 7 is provided with internal spline, and the end of the input shaft of the sprocket shaft set 2, that is, the center shaft, is provided with external spline. The end of the second shaft 7 provided with internal spline can extend out of the 1:1 gearbox 5 and be connected with the sprocket shaft set 2 outside the 1:1 gearbox 5. The second shaft 7 can also not extend out of the 1:1 gearbox 5, but be aligned with or inside the shell of the 1:1 gearbox 5, and the input shaft of the sprocket shaft set 2 provided with spline is inserted into the internal spline in the 1:1 gearbox 5. The internal and external splines engaged between the second shaft 7 and the sprocket shaft set 2 and between the first shaft 6 and the reducer can be interchanged. Of course, other arrangements can also be used. The height difference between the first shaft 6 and the second shaft 7 affects the height difference between the center of the reducer 4 and the center of the sprocket shaft set 2 of the power part, and further affects the height of the nose frame and the tail frame. The number of teeth of the input gear 8 and the output gear 9 is the same. The specific number and size are determined according to the needs.

[0026] The side of the fuselage of the nose frame and the tail frame is provided with a coupling plate 3, the coupling plate 3 includes a left vertical plate 31, a right vertical plate 32, and at least one connecting piece 33 connecting the left vertical plate 31 and the right vertical plate 32, and the coupling plate 3 is provided with a sprocket hole 34 through which the input shaft of the sprocket shaft set 2 passes; the left vertical plate 31 is fixedly connected with the vertical plate of the side of the fuselage, and the right vertical plate 32 is fixedly connected with the shell of the 1:1 gearbox 5; the 1:1 gearbox 5 is provided with a through hole corresponding to the second shaft 7, and the input shaft of the sprocket shaft set 2 is connected with the second shaft 7 through spline via the sprocket hole 34 on the coupling plate 3. The left vertical plate 31 and the vertical plate of the side of the fuselage are connected through bolts, and the right vertical plate 32 and the shell of the 1:1 gearbox 5 are also fixedly connected through bolts. The connecting piece 33 is preferably arranged at a position around the left vertical plate 31 and the right vertical plate 32 to avoid the input shaft of the sprocket shaft set 2. The height of the left and right plates of the 1:1 gearbox 5 shell is set according to the needs.

[0027] In the embodiment, the power of the motor is transmitted to the first shaft 6 of the 1:1 gear box 5 through the output shaft of the speed reducer 4, the power of the first shaft 6 is transmitted to the second shaft 7 through the input gear 8 and the output gear 9 at the same speed, and the second shaft 7 transmits the power to the chain wheel shaft set 2. Since the height of the first shaft 6 is higher than that of the second shaft 7, the height of the input shaft of the speed reducer 4 is higher than that of the central shaft of the chain wheel shaft set 2. The height of the center of the chain wheel shaft set 2 is reduced, the height of the head frame and the tail frame is reduced, the shearer rocker arm can be pressed lower, and the triangular coal is reduced. Moreover, the power part is arranged on the vertical plate of the side of the body of the head frame and the tail frame, and is staggered with the shearer rocker arm. The height of the power part does not affect the pressing height of the shearer rocker arm. The height of the power part can be arranged as required.

[0028] The utility model discloses reduce the chain wheel center high of head frame, tail frame and the height of head frame and tail frame. The performance of three machines supporting head frame and tail frame and drum cooperation cutting through bottom coal is good, and the bottoming quantity is increased. Thus reduce the difficulty of manual clearing triangular coal, and the working face advancing efficiency is high, and the head frame and tail frame bottoming effect is better.

[0029] The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner, as long as the combination of the technical features does not result in contradictions. The technical features of the above-described embodiments can be combined in any manner,

Claims

1. A head-to-tail transmission unit with a low-profile sprocket arrangement, comprising a head frame and a tail frame, each of which comprises a respective body, a sprocket shaft assembly being disposed on the body, the side of the body being connected to a power unit; the sprocket shaft assembly being driven for rotation by the corresponding power unit; characterized in that: In at least one of the headstock or the tailstock; a power transmission mechanism with constant speed is provided between the output shaft of the power unit and the input shaft of the sprocket shaft group; the height of the axis of the input shaft of the sprocket shaft group is lower than the height of the axis of the output shaft of the power unit.

2. The head and tail transmission part with a low-profile sprocket arrangement according to claim 1, characterized in that: The power unit includes a motor and a reducer. The output shaft of the power unit is the output shaft of the reducer. One side of the shell of the power transmission mechanism is fixedly connected to the side of the fuselage, and the other side is fixedly connected to the shell of the reducer.

3. The head and tail transmission part with a low-profile sprocket arrangement according to claim 2, characterized in that: The power transmission mechanism is a 1:1 gear box with meshing gears arranged inside. The transmission ratio of the 1:1 gear box is 1:

1. The housing of the reducer is fixedly connected to the housing of the 1:1 gear box.

4. The head and tail transmission part with a low-profile sprocket arrangement according to claim 3, characterized in that: A first shaft and a second shaft are rotatably arranged in parallel in the 1:1 gearbox, an input gear is arranged on the first shaft, and an output gear meshing with the input gear is arranged on the second shaft; one end of the first shaft extends out of the 1:1 gearbox and is spline-connected to the output shaft of the reducer; one end of the second shaft close to the sprocket shaft group is spline-connected to the input shaft of the sprocket shaft group; the mating position of the first shaft and the output shaft of the reducer is higher than the mating position of the second shaft and the input shaft of the sprocket shaft group.

5. The head and tail transmission part with a low-profile sprocket arrangement according to claim 3, characterized in that: A connecting plate is provided on the side of the fuselage of the head frame and the tail frame, and the connecting plate includes a left vertical plate, a right vertical plate, and at least one connecting member connecting the left vertical plate and the right vertical plate, and the connecting plate is provided with a sprocket hole through which the input shaft of the sprocket shaft group passes; the left vertical plate is fixedly connected to the vertical plate on the side of the fuselage, and the right vertical plate is fixedly connected to the outer shell of the 1:1 gear box; the 1:1 gear box is provided with a through hole corresponding to the second shaft, and the input shaft of the sprocket shaft group passes through the sprocket hole on the connecting plate and is spline-connected to the second shaft.

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