CN220319559U - Grooving machine for coal mine - Google Patents

Abstract

The utility model provides a grooving machine for coal mines, which comprises: a work platform capable of back and forth movement; the cutting arm comprises an arm support and a cutting pick arranged on the arm support, and the cutting pick can move on the arm support to cut a roadway bottom plate; the swing arm mechanism comprises a rotary support, a rotary arm and a rotary power mechanism, wherein the rotary support is installed on the working platform, the rotary arm is rotatably installed on the rotary support, and the rotary power mechanism is connected with the rotary arm to drive the rotary arm to rotate relative to the rotary support; the cutting arm is installed in the revolving arm, the cutting arm can rotate to incline downwards along the backward direction under the drive of the revolving arm, and the technical problems of relatively large difficulty in treating the floor heave of the coal mine tunnel and unsatisfactory treating effect are solved.

Description

Grooving machine for coal mine

Technical Field

The utility model relates to the technical field of coal mining equipment, in particular to a grooving machine for a coal mine.

Background

The floor heave is a common phenomenon in coal mine roadways, and has adverse effects on the production and safety of coal mine roadways, the roadway section can be reduced, transportation and pedestrians are hindered, mine ventilation is hindered, and the whole roadway can be scrapped in severe cases. Currently, the method for treating the bottom drum mainly comprises the following steps:

(1) Floor anchor rod reinforcement prevents floor heaves, and is reinforced by using anchor rods on the floor of a roadway, but the roadway needs to be evaluated firstly; the control time is relatively short.

(2) Blasting pressure relief treatment of the bottom drum, wherein a rock loosening zone is formed in a coal bed bottom plate close to the periphery of a roadway through blasting, but the blasting parameters are needed when the method is adopted, and the rock properties and the thickness of the coal bed bottom plate are considered, so that the method is complex; explosive is used in the roadway, and the explosive has the risk of abnormal blasting, so that safety is not facilitated; and the effect of treating the bottom drum is not ideal by simply relying on blasting to release pressure.

(3) Grouting treatment and pressure relief of the bottom plate, loosening of the deep rock mass of the bottom plate by blasting, easy penetration of grouting slurry into gaps, filling and reinforcement, but high requirement on underground safety due to blasting; the reinforcement period is longer and the process is more complex.

(4) The concrete inverted arch is suitable for the bottom plate supporting measure of the permanent tunnel, and can be used together with the metal contractible bottom beam to obtain larger residual deformation resistance of the bottom plate for reinforcing the concrete inverted arch, but the thickness of the concrete inverted arch is not suitable to be larger than 600mm from the economical aspect.

In conclusion, the difficulty in treating the floor heave of the coal mine tunnel is relatively high, and the technical problem of unsatisfactory treatment effect exists.

Disclosure of Invention

The utility model aims to provide a grooving machine for a coal mine, which aims to solve the technical problems of relatively high difficulty in treating the floor heave of a coal mine roadway and unsatisfactory treatment effect.

The above object of the present utility model can be achieved by the following technical solutions:

the utility model provides a grooving machine for coal mines, comprising:

a work platform capable of back and forth movement;

the cutting arm comprises an arm support and a cutting pick arranged on the arm support, and the cutting pick can move on the arm support to cut a roadway bottom plate;

the swing arm mechanism comprises a rotary support, a rotary arm and a rotary power mechanism, wherein the rotary support is installed on the working platform, the rotary arm is rotatably installed on the rotary support, and the rotary power mechanism is connected with the rotary arm to drive the rotary arm to rotate relative to the rotary support;

the cutting arm is arranged on the rotary arm, and the cutting arm can rotate to incline downwards along the backward direction under the drive of the rotary arm.

In a preferred embodiment, a plurality of the picks are annularly distributed on the arm support; the cutting arm includes a rotary power mechanism for driving the pick to rotate about the ring.

In a preferred embodiment, the cutting arm comprises a chain, the pick being secured to an outer surface of the chain, and the rotary power mechanism being coupled to the chain to drive the chain in rotation.

In a preferred embodiment, a plurality of the picks are annularly distributed along the chain, and at least two of the picks are staggered in an axial direction of the chain.

In a preferred embodiment, the outer surface of the chain is provided with a hopper.

In a preferred embodiment, the grooving machine for the coal mine comprises a discharging mechanism, wherein the discharging mechanism comprises a collecting hopper and a conveying mechanism, the collecting hopper is arranged on the working platform, and the conveying mechanism is used for conveying slag in the collecting hopper to the outside of the grooving machine for the coal mine.

In a preferred embodiment, the discharge mechanism comprises a collection tray for receiving slag material brought to the ground by the cutting arm, the collection tray being in communication with the collection hopper.

In a preferred embodiment, the material conveying mechanism comprises a first material conveying machine, a second material conveying machine and a third material conveying machine which are sequentially connected from back to front, the material collecting tray is connected with the material collecting hopper through the first material conveying machine, the second material conveying machine is connected with the material collecting hopper and is arranged along the front-back direction, and the third material conveying machine is arranged along the transverse direction of the working platform.

In a preferred embodiment, the rotary bracket comprises two supports which are transversely arranged at intervals, and two ends of the rotary arm are respectively connected with the supports; the rotary power mechanism comprises a first hydraulic cylinder, one end of the first hydraulic cylinder is hinged with the rotary arm, and the other end of the first hydraulic cylinder is hinged with the working platform.

In a preferred embodiment, the working platform comprises a crawler belt, and the crawler belt can drive the working platform to move.

In a preferred embodiment, the working platform comprises a base, a telescopic platform and a ground supporting oil cylinder, wherein the telescopic platform is mounted on the base and can move back and forth relative to the base, and the swing arm mechanism is mounted on the telescopic platform; the ground supporting oil cylinder and the crawler belt are both arranged on the base, and the ground supporting oil cylinder can support the base so that the crawler belt is separated from the ground.

In a preferred embodiment, the grooving machine for the coal mine comprises a push shovel and a second hydraulic cylinder, wherein the push shovel is rotatably installed on the front side of the working platform, and the second hydraulic cylinder is connected with the push shovel so as to drive the push shovel to swing up and down.

In a preferred embodiment, the grooving machine for the coal mine comprises a power platform, wherein the power platform and the working platform can independently move back and forth, and the power platform is connected with the working platform through cables and/or pipelines.

The utility model has the characteristics and advantages that:

the grooving machine for the coal mine can be arranged in a roadway of the coal mine, the swing arm mechanism drives the cutting arm to adjust the inclination angle of the cutting arm relative to the vertical direction, the cutting arm extends to the position below a roadway bottom plate, the working platform drives the swing arm mechanism and the cutting arm to move forwards, the cutting arm cuts rock strata in the feeding process, mechanical grooving is realized, grooving pressure relief is carried out in a mechanical grooving mode, so that the stress conduction path of a foundation drum is cut off, the roadway foundation drum is treated, the operation difficulty is lower, and the operation efficiency is higher. In the grooving machine for the coal mine, the inclination angle of the cutting arm is adjusted through the swing arm mechanism so as to adjust the cutting depth, and the grooving machine is convenient to adapt to different working conditions; on the other hand, the postures of the cutting arm and the swing arm mechanism can be adjusted in the transportation process, so that the cutting arm and the swing arm mechanism can be transported in a coal mine tunnel and other channels conveniently, and the grooving machine for the coal mine provided by the utility model greatly reduces the transportation and installation difficulty in consideration of the fact that the general space of the coal mine channel is limited.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall schematic diagram of an embodiment of a grooving machine for coal mines provided by the utility model;

FIG. 2 is a schematic view of the coal mine groover shown in FIG. 1 with a cover removed;

FIG. 3 is a partial schematic view of an embodiment of a grooving machine for coal mines provided by the utility model;

FIG. 4 is a schematic diagram of a power platform in an embodiment of the grooving machine for coal mines;

FIG. 5 is a schematic view of a working platform and a swing arm mechanism in an embodiment of a grooving machine for coal mines;

fig. 6 is a schematic structural view of a swing arm mechanism in the grooving machine for coal mines;

FIG. 7 is a schematic view of a part of a working platform and a swing arm mechanism in an embodiment of a grooving machine for coal mines;

FIG. 8 is an enlarged view of a portion of a cutting arm and swing arm mechanism in one embodiment of a groover for coal mines provided by the present utility model;

FIG. 9 is a front view of a discharge mechanism in an embodiment of the grooving machine for coal mine provided by the utility model;

FIG. 10 is a rear view of a discharge mechanism in one embodiment of a groover for coal mines provided by the utility model;

FIG. 11 is an internal schematic view of a discharge mechanism in an embodiment of a grooving machine for coal mine provided by the present utility model;

FIG. 12 is an overall schematic view of a further embodiment of a grooving machine for coal mines provided by the utility model;

FIG. 13 is a front view of another embodiment of a grooving machine for coal mines provided by the utility model;

fig. 14 is a schematic structural view of a cutting arm in the grooving machine for coal mine provided by the utility model;

fig. 15 is a schematic diagram showing the distribution of picks of a cutting arm in the grooving machine for coal mines;

fig. 16 is a schematic view of the structure of a pick, a hopper and a chain of a cutting arm in the grooving machine for coal mine;

FIG. 17 is a schematic diagram of the operation of slotting of a cutting arm in a slotting machine for coal mines;

FIG. 18 is a schematic view of a partial operation of a cutting arm slot in the coal mine groover provided by the utility model;

FIG. 19 is a schematic view of a cutting arm of the grooving machine for coal mines, which is provided by the utility model, when the cutting arm is grooved, the schematic view is seen from the inside of the groove;

fig. 20 is an enlarged view of a portion of the cutting arm shown in fig. 7.

Reference numerals illustrate:

10. a cutting arm; 100. an arm support;

200. cutting pick; 201. a first trajectory line; 202. a second trajectory line; 203. slag materials; 204. a rock formation;

211. a first pick; 212. A second pick; 213. A top pick;

300. a hopper; 301. A receiving plate; 302. A support plate;

400. a chain; 401. a link plate; 402. a tool apron; 405. a back-to-front direction;

406. a rotary power mechanism; 407. A hydraulic motor;

50. a working platform; 51. A track; 511. A drive motor;

52. a base; 53. a telescoping platform; 54. a ground supporting oil cylinder;

60. a swing arm mechanism;

61. a swivel bracket; 611. a support; 612. a rotating shaft;

62. a rotary arm;

63. a rotary power mechanism; 631. a first hydraulic cylinder; 64. a fixing pin; 65. a swivel arm pin;

70. a discharging mechanism;

71. a collecting hopper; 72. a collecting tray; 721. a collecting plate;

73. a material conveying mechanism; 731. a first conveyor; 732. a second conveyor; 733. a third conveyor;

741. pushing shovel; 742. a second hydraulic cylinder;

75. a valve group; 76. an electric control system; 77. a lubrication system; 78. a water control spray head; 79. a housing;

80. a power platform; 81. an electric control system; 82. a main motor; 83. a pump station;

84. a paying-off device; 85. and a wire winding device.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model provides a groover for coal mine, as shown in fig. 1 to 14, the groover for coal mine comprises: a work platform 50, a cutting arm 10 and a swing arm mechanism 60, the work platform 50 being capable of back and forth movement; the cutting arm 10 comprises an arm support 100 and a pick 200 arranged on the arm support 100, wherein the pick 200 can move on the arm support 100 to cut a roadway floor; the swing arm mechanism 60 comprises a swing bracket 61, a swing arm 62 and a swing power mechanism 63, wherein the swing bracket 61 is installed on the working platform 50, the swing arm 62 is rotatably installed on the swing bracket 61, and the swing power mechanism 63 is connected with the swing arm 62 to drive the swing arm 62 to rotate relative to the swing bracket 61; the cutting arm 10 is mounted on the rotary arm 62, and the cutting arm 10 can be rotated to incline downward in a rearward direction by the drive of the rotary arm 62.

The grooving machine for the coal mine can be arranged in a roadway of the coal mine, the swing arm mechanism 60 drives the cutting arm 10 to adjust the inclination angle of the cutting arm relative to the vertical direction, the cutting arm 10 extends to the position below a roadway bottom plate, the working platform 50 drives the swing arm mechanism 60 and the cutting arm 10 to move forwards, the cutting arm 10 cuts the rock stratum 204 in the feeding process, mechanical grooving is achieved, grooving and pressure relief are carried out in a mechanical grooving mode, so that a stress conduction path of a foundation drum is cut off, roadway foundation drums are treated, operation difficulty is low, and operation efficiency is high. In the grooving machine for the coal mine, the inclination angle of the cutting arm 10 is adjusted through the swing arm mechanism 60 so as to adjust the cutting depth, so that the grooving machine is convenient to adapt to different working conditions; on the other hand, the postures of the cutting arm 10 and the swing arm mechanism 60 can be adjusted in the transportation process, so that the cutting arm is convenient to transport in a coal mine tunnel and other channels, and the grooving machine for the coal mine greatly reduces the transportation and installation difficulty in consideration of the fact that the general space of the coal mine channel is limited.

As shown in fig. 14, a plurality of picks 200 are annularly distributed on the arm support 100; the cutting arm 10 includes a rotary power mechanism 406, the rotary power mechanism 406 being configured to drive the pick 200 to rotate about the ring, the pick 200 being advanced with the cutting arm 10 while being rotated by the rotary power mechanism 406 such that the pick 200 strikes the formation 204 to effect a cut.

In one embodiment, the cutting arm 10 includes a chain 400, the pick 200 is secured to an outer surface of the chain 400, and a rotary power mechanism 406 is coupled to the chain 400 to drive the chain 400 to rotate, as shown in fig. 14 and 16, the chain 400 is endless, and the pick 200 rotates with the chain 400. Further, the arm support 100 is substantially rectangular, the chain 400 surrounds the arm support 100, the chain 400 is driven by the rotation power mechanism 406 to rotate relative to the arm support 100, and the chain 400 drives the pick 200 to rotate on the arm support 100. The chain 400 includes a plurality of link plates 401, with the picks 200 mounted to the link plates 401 by tool holders 402. The rotary power mechanism 406 may be a hydraulic motor 407 mounted on the rotary arm 62, the hydraulic motor 407 being connected to one sprocket of the chain 400 to drive the sprocket to rotate, thereby driving the chain 400 and the pick 200 to rotate, the hydraulic motor 407 providing cutting power to the cutting arm 10.

The inventors have improved on the placement of the picks 200.

In an embodiment, the plurality of cutting picks 200 are annularly distributed along the chain 400, and at least two cutting picks 200 are staggered along the axial direction of the chain 400, as shown in fig. 14-17, the chain 400 drives the cutting picks 200 to rotate around the axis, the cutting picks 200 staggered along the axial direction cut different parts, and the axial direction corresponds to the width of the opened groove.

In one embodiment, the grooving cutting arm 10 includes a plurality of sets of picks 200; at least two picks 200 in at least one set of picks 200 are axially staggered, the picks 200 in the same set being capable of cutting different parts of the floor rock; during the annular rotation, each set of picks 200 cuts the rock, respectively, improving the efficiency of the cutting. The plurality of groups of picks 200 may be distributed along a circle to cyclically strike and cut rock, and the number and arrangement of picks 200 in each group may or may not be the same.

Further, the at least one set of picks 200 includes a top pick 213, a plurality of first picks 211 distributed along a first trajectory line 201, the first trajectory line 201 extending annularly from the top pick 213 and being offset axially outward, and a second pick 212 distributed along a second trajectory line 202, the second trajectory line 202 extending annularly from the top pick 213 and being offset axially outward, the offset directions of the first trajectory line 201 and the second trajectory line 202 being opposite. As shown in fig. 15, 16 and 19-20, the first trajectory line 201 is deviated leftward as shown in fig. 15, the second trajectory line 202 is deviated rightward as shown in fig. 15, a plurality of first picks 211 on the first trajectory line 201, second picks 212 on the second trajectory line 202 and top picks 213 respectively strike and cut different portions, so that grooving efficiency is improved, and grooving width can be controlled by left and right coverage of the first picks 211 and the second picks 212.

In an embodiment, as shown in fig. 18-20, the outer surface of the chain 400 is provided with a hopper 300, in the grooving process, the hopper 300 receives the rock layer 204 slag material cut by the cutting pick, and brings the rock layer 204 slag material to the ground of the roadway, so that the slag material is prevented from being left in the groove, the slag material generated in the cutting process is timely discharged, the grooving effect is ensured, on one hand, the cleaning of the slag material is facilitated, and on the other hand, the grooving with the cutting arm 10 is facilitated to smoothly groove, and the grooving efficiency is improved.

Further, in the rotation direction of the pick 200, the pick 200 is tilted forward; the rear side of at least one cutting pick 200 is provided with a hopper 300, as shown in fig. 16-18, the cutting pick 200 rotates forwards along the rotation direction, and the top end of the cutting pick 200 inclines forwards, so that the knocking force of the cutting pick 200 on the rock stratum 204 is more concentrated, and the cutting efficiency is improved; the cut slag 203 falls onto the hopper 300 at the rear side and is carried out to the ground, thereby being beneficial to ensuring the slotting effect.

When the pick 200 cuts the formation 204, the angled magazine 300 contacts the formation 204 to form a space. Slag 203 generated by the previous pick 200 cutting the formation 204 falls into the following hopper 300 and is eventually discharged. As shown in fig. 19, the left and right sides of the cutting arm are each a rock layer 204, and during the actual grooving operation, the cutting pick 200 strikes the rock layer 204 and brings slag 203 out through the hopper 300, thereby forming a groove. The picks 200 interact with the formation 204 and slag 203 resulting from the breaking of the formation 204 falls into the subsequent hopper 300. As can be seen, the formation 204 on both sides and one side of the hopper 300 form a "concave" space that is used to hold the slag 203 and eventually drain as the chain 400 runs.

In one embodiment, hopper 300 includes a receiving plate 301, receiving plate 301 being capable of receiving the rock slag 203 being cut. Further, the receiving plate 301 extends along the axial direction and is inclined relative to the axial direction, as shown in fig. 19 and 20, the receiving plate 301 is inclined relative to the axial direction, which is beneficial to guiding the slag 203 falling onto the receiving plate 301 to roll outwards, so that the slag 203 falls onto the outside of the slot, and is convenient to collect and clean. Preferably, the inclined directions of the receiving plates 301 of two adjacent hoppers 300 are opposite to guide the slag 203 to fall to both sides of the slot, avoiding too much accumulation of the slag 203 on one side.

Further, the stock plate 301 on the rear side of the first pick 211 is inclined to the rear side in the deviating direction of the first trajectory line 201; the stock plate 301 on the rear side of the second pick 212 is inclined to the rear side in the direction of deviation of the second trajectory line 202, the first trajectory line 201 is deviated to the left as shown in fig. 15 and 20, the second trajectory line 202 is deviated to the right, the pick 200 is rotated from the rear-to-front direction 405 at the time of grooving, the stock plate 301 on the rear side of the first pick 211 also passes through the first trajectory line 201 and is inclined to the rear side in the left direction, so that the slag 203 is guided to the left side; the stock receiving plate 301 on the rear side of the second pick 212 also passes through the second trajectory line 202 and is inclined to the rear side in a rightward direction, thereby guiding the slag 203 to the right.

A support plate 302 may be provided at the rear side of the receiving plate 301 to support the receiving plate 301, thereby improving the strength of the hopper 300. The support plate 302 and the receiving plate 301 may be mounted on the link plate 401 by welding.

In one embodiment, the grooving machine for coal mine comprises a discharging mechanism 70, wherein the discharging mechanism 70 comprises a collecting hopper 71 and a conveying mechanism 73, the collecting hopper 71 is arranged on the working platform 50, and the conveying mechanism 73 is used for conveying slag in the collecting hopper 71 to the outside of the grooving machine for coal mine. As shown in fig. 11, the discharge mechanism 70 includes a collecting tray 72, the collecting tray 72 is for receiving slag carried by the cutter arm 10 to the ground, and the collecting tray 72 is in communication with a collecting hopper 71. The collecting tray 72 is disposed under the cutting arm 10 and may be close to the roadway floor, and the collecting tray 72 is used for collecting the dregs discharged from the cutting arm 10 and discharging the dregs out of the grooving machine for coal mine through the collecting hopper 71 and the feeding mechanism 73.

Further, the feeding mechanism 73 includes a first feeding machine 731, a second feeding machine 732, and a third feeding machine 733 which are sequentially connected from the rear to the front, and as shown in fig. 9 to 11, the collecting tray 72 is connected to the collecting hopper 71 through the first feeding machine 731, the second feeding machine 732 is connected to the collecting hopper 71 and arranged in the front-rear direction, and the third feeding machine 733 is arranged in the lateral direction of the working platform 50. The material conveying mechanism 73 adopts a sectional layout form, realizes steering in the transportation process, is beneficial to reducing occupied space and is convenient to implement in mine roadways. Preferably, the first conveyor 731 is inclined to convey the muck in the tray 72 upward to the collection hopper 71, so as to convey the muck a certain distance upward from the ground, and then to convey the muck horizontally; the third conveyor 733 may be disposed obliquely upward while being laterally outward.

Specifically, during grooving operation, the cutting pick cuts slag generated by the roadway bottom plate, and the slag is taken out of the groove body through the hopper on the cutting arm 10 to reach the ground; slag is gradually collected in the pan 72 as the vehicle progresses and slag is deposited; when the slag in the material collecting tray 72 reaches a certain degree, the slag is discharged by the first conveyor 731, reaches the collection hopper 71 positioned below the first conveyor 731, falls into the second conveyor 732 in the horizontal direction, finally enters the third conveyor 733 and is discharged to the outside. As shown in fig. 11, the lower end of the collecting tray 72 is provided with an inclined collecting plate 721, the lower end of the collecting plate 721 is close to the roadway floor, and slag generated by cutting can enter the collecting tray 72 along the collecting plate 721.

The first, second and third conveyors 731, 732, 733 may be screw or gum-type. Preferably, when the third feeder 733 is a tape-type discharger, the third feeder 733 may be left-or right-or front-placed according to actual situations of the site, so as to discharge the dregs to the left, right or front side of the apparatus. When the third material conveyer 733 is a spiral material conveyer, the discharge end of the third material conveyer 733 may be left-arranged, right-arranged or front-arranged according to the actual situation of the site, so as to discharge the dregs to the left side, right side or front side of the device.

In one embodiment, the pivoting bracket 61 comprises two supports 611 arranged at intervals in the transverse direction, and two ends of the pivoting arm 62 are respectively connected to the supports 611; the swing power mechanism 63 includes a first hydraulic cylinder 631, one end of the first hydraulic cylinder 631 is hinged to the swing arm 62, and the other end of the first hydraulic cylinder 631 is hinged to the work platform 50. As shown in fig. 5-8, the rotary arm 62 is mounted on the support 611 through a rotary shaft 612, and the first hydraulic cylinder 631 drives the rotary arm 62 to rotate around the axis of the rotary shaft 612 during telescopic movement.

The cutting arm 10, which is the primary actuator for grooving the roadway floor, may be mounted to the swivel arm 62 by bolts or pins. The cutting pick at the upper end of the cutting arm 10 is driven by the hydraulic motor 407 to perform a grooving operation. One end of the rotary arm 62 is connected with a first hydraulic cylinder 631, and the first hydraulic cylinder 631 is used for driving the rotary motion of the rotary arm 62, so as to lift and drop the chain arm, and realize that the cutting depth meets the grooving requirement. Specifically, two supports 611 of the swing bracket 61 are mounted on the work platform 50, and the swing bracket 61 is engaged with the swing arm 62 through a rotation shaft 612. One end of the rotary arm 62 is connected with the cutting arm 10 through a bolt or a pin, the other end of the rotary arm 62 is connected with a piston rod of a first hydraulic cylinder 631 through a rotary arm pin 65, the first hydraulic cylinder 631 is arranged on the working platform 50 through a fixed pin 64, when the cutting arm 10 needs to be lifted, the first hydraulic cylinder 631 retracts to pull the rotary arm 62 to move, the rotary arm 62 rotates clockwise around a rotary shaft 612, and the cutting arm 10 is lifted; when the cutting arm 10 needs to be put down, the first hydraulic cylinder 631 extends to push the rotary arm 62 to move, the rotary arm 62 rotates anticlockwise around the rotary shaft 612 as the center of a circle, and the cutting arm 10 is put down.

In one embodiment, work platform 50 may be advanced or retracted in a variety of ways, such as: the work platform 50 takes the form of tracks, wheels, tracks, or frame steps. Preferably, the working platform 50 comprises a crawler 51, and as shown in fig. 1-3, the crawler 51 can drive the working platform 50 to move to realize forward or backward movement. The crawler belt 51 serves as a running mechanism, and when the cutting arm 10 starts the cutting operation in the actual operation, the crawler belt 51 advances at a constant speed according to a control command, thereby realizing continuous cutting feed of the grooving machine. The crawler belt 51 may be operated by the driving motor 511. Preferably, the crawler belt 51 also has a braking function, and the operation is ensured to be completed in the roadways with different inclination angles according to the actual situation of roadway inclination.

In another embodiment, as shown in fig. 12 to 13, the working platform 50 includes a base 52, a telescopic platform 53 and a ground supporting cylinder 54, the telescopic platform 53 is mounted on the base 52, the telescopic platform 53 can move back and forth relative to the base 52, and the swing arm mechanism 60 is mounted on the telescopic platform 53; the ground supporting cylinder 54 and the crawler belt 51 are both mounted on the base 52, and the ground supporting cylinder 54 can support the base 52 to lift the crawler belt 51 off the ground. The working platform 50 adopts stepping feeding to enable the cutting arm 10 to perform intermittent cutting feeding, and in actual operation, the ground supporting oil cylinder 54 is controlled to extend out to support the base 52 until the crawler belt 51 is separated from the ground; the telescopic platform 53 moves forwards from one end to the other end to complete cutting feeding at a certain distance; after completion, the telescopic platform 53 is retracted backward, the ground supporting cylinder 54 is retracted to make the crawler belt 51 touch the ground, the crawler belt 51 moves to the next section, and the base 52 is supported by the ground supporting cylinder 54 again to perform cutting work.

Preferably, the work platform 50 includes 4 ground cylinders 54; the telescopic platform 53 adopts a sliding rail mechanism or a hydraulic mechanism, and the telescopic platform 53 moves from one end to the other end under the thrust of a gear rack, a screw rod or a hydraulic oil cylinder to complete cutting feeding at a certain distance.

The crawler feed and the step feed described above may be selected according to the particular use scenario.

As shown in fig. 1 to 3 and 11 to 13, the grooving machine for coal mine includes a push shovel 741 and a second hydraulic cylinder 742, the push shovel 741 is rotatably installed at the front side of the working platform 50, and the second hydraulic cylinder 742 is connected to the push shovel 741 to drive the push shovel 741 to swing up and down. The pushing shovel 741 is used for cleaning sundries in the advancing direction of the working platform 50, and keeps the ground as flat as possible in the advancing process so as to ensure the stability of the advancing direction of the working platform 50; the inclination direction of the push blade 741 is adjusted by the second hydraulic cylinder 742. Specifically, the pushing shovel 741 may be a flat shovel or an inclined shovel; the inclined shovel can be inclined left or right and is selected according to different user demands.

As shown in fig. 1 and 2, the grooving machine for coal mine comprises a water control spray head 78 and a cover 79, wherein the water control spray head 78 is arranged on the cutting arm 10; the cover 79 covers part of the work platform 50 for protection.

In one embodiment, the grooving machine for coal mines comprises a power platform 80, as shown in fig. 1-4, the power platform 80 and the working platform 50 can independently move back and forth, and the power platform 80 and the working platform 50 are connected through cables and/or pipelines. When the rotary power mechanism 63, the rotary power mechanism 406 and the telescopic platform 53 are driven by hydraulic cylinders, a pipeline is connected between the power platform 80 and the working platform 50 to convey hydraulic oil to the working platform 50 through the pipeline. When the rotary power mechanism 63, the rotary power mechanism 406 and the telescopic platform 53 are driven by motors, cables are connected between the power platform 80 and the working platform 50 to transmit electric energy to the working platform 50. Preferably, the working platform 50 is further provided with a valve group 75 and/or an electric control system 76; the working platform 50 is also provided with a lubrication system 77.

Further, as shown in fig. 4, the power platform 80 is provided with a paying-off device 84, and the paying-off device 84 can wind the cable or pipeline, so as to pay-off the cable or pipeline when the distance between the power platform 80 and the working platform 50 changes, so that the distance between the power platform 80 and the working platform 50 changes. As shown in fig. 2, the working platform 50 may be provided with a wire winding device 85 that cooperates with the wire unwinding device 84, where the wire winding device 85 guides the cable or pipeline. As shown in fig. 4, the power platform 80 is provided with an electric control system 81, a main motor 82, a pump station 83 and a crawler belt 51, the power platform 80 provides a hydraulic power source and electric control, and a paying-off device 84 and a paying-off device 85 are arranged to pay-off and pay-off a pipeline and a cable connected with the two platforms so as to adapt to the change of the distance between the two platforms. The tracks 51 on the power platform 80 and work platform 50 may also be replaced with other running gear, such as tires.

The cutting arm 10, the swing arm mechanism 60 and the working platform 50 form an execution unit of the grooving machine, and the swing arm mechanism 60 drives the cutting arm 10 to swing up and down so as to adjust the included angle between the cutting arm 10 and the horizontal plane, thereby adjusting the depth of the grooving; the work platform 50 is used to effect forward movement to effect slot feed. The grooving machine for the coal mine comprises a power platform 80 and a working platform 50, realizes modularization and combines the power platform and the working platform in a module form. The grooving machine for the coal mine can be split in other modularized modes so as to adapt to different working conditions.

In other embodiments, the power platform 80 may be integrated with the working platform 50, and the main motor 82 and the pump station 83 may be mounted on the working platform 50 and integrated with each other. Further, each component on the working platform 50 is detachably installed, and can be split into a plurality of modules on the ground so as to be convenient for transportation; and after reaching the working position, assembling.

The grooving machine for the coal mine is applied to a mine tunnel, and the mine tunnel is considered to have the following characteristics: the depth of the tunnel is large (up to 500-600 m), the grooving machine for the coal mine needs to be transported from the ground to the area to be grooved of the tunnel, and the transportation difficulty is relatively high; the cross section of the tunnel is smaller, and a space is reserved for the operation of other equipment and ventilation, so that the volume of the grooving machine for the coal mine needs to be smaller; the tunnel is influenced by stratum stress, the bottom plate is easy to generate a bottom bulge, the cross section of the tunnel is reduced, and the top plate is also at risk of falling. Because of the characteristics of the mine tunnel, the difficulty of transportation, disassembly and grooving operation of the grooving machine is increased, and the grooving machine for the coal mine is correspondingly optimally designed based on the difficulty, so that the grooving machine is suitable for operation of the mine tunnel. The grooving machine for the coal mine can be applied to the condition that the bottom drum is generated; it can also be used to prevent the bottom drum, i.e. to make a slot before the bottom drum occurs.

The grooving machine for the coal mine has the following advantages: (1) The bottom plate is cut to be grooved, so that the effective treatment of the bottom drum can be completed, compared with other treatment modes, the underground conveying pressure is reduced without conveying additional materials such as anchor rods, explosives and the like into the underground; the method meets the 'coal mine safety mark authentication requirement', and simultaneously does not use modes with potential safety hazards such as blasting and the like, thereby being beneficial to the safety production of mines; (2) The lithology requirement on the roadway is less, and the operation difficulty is greatly reduced; (3) The operation can be performed by one person, and compared with other operation modes, the labor cost is greatly reduced; further, the work efficiency is higher than that of other work modes.

The working platform 50, the cutting arm 10, the swing arm mechanism 60 and other components in the grooving machine for the coal mine can be controlled wirelessly or in a wired manner. Furthermore, the full intelligent speed regulation automatic tracking grooving can be realized by the control system and the track line arranged on the bottom plate of the roadway in a matching way.

The foregoing is merely a few embodiments of the present utility model and those skilled in the art may make various modifications or alterations to the embodiments of the present utility model in light of the disclosure herein without departing from the spirit and scope of the utility model.

Claims (13)

1. A grooving machine for coal mines, comprising:

a work platform capable of back and forth movement;

the cutting arm comprises an arm support and a cutting pick arranged on the arm support, and the cutting pick can move on the arm support to cut a roadway bottom plate;

the swing arm mechanism comprises a rotary support, a rotary arm and a rotary power mechanism, wherein the rotary support is installed on the working platform, the rotary arm is rotatably installed on the rotary support, and the rotary power mechanism is connected with the rotary arm to drive the rotary arm to rotate relative to the rotary support;

the cutting arm is arranged on the rotary arm, and the cutting arm can rotate to incline downwards along the backward direction under the drive of the rotary arm.

2. The grooving machine for coal mines according to claim 1, wherein,

the cutting picks are annularly distributed on the arm support; the cutting arm includes a rotary power mechanism for driving the pick to rotate about the ring.

3. A groover for a coal mine as claimed in claim 2, wherein,

the cutting arm comprises a chain, the pick is fixed on the outer surface of the chain, and the rotary power mechanism is connected with the chain to drive the chain to rotate.

4. A groover for a coal mine as claimed in claim 3, wherein,

the cutting picks are annularly distributed along the chain, and at least two cutting picks are staggered along the axial direction of the chain.

5. A groover for a coal mine as claimed in claim 3, wherein,

the outer surface of the chain is provided with a hopper.

6. The grooving machine for coal mines according to any one of claims 1 to 5,

the grooving machine for the coal mine comprises a discharging mechanism, wherein the discharging mechanism comprises a collecting hopper and a conveying mechanism, the collecting hopper is arranged on the working platform, and the conveying mechanism is used for conveying slag in the collecting hopper to the outside of the grooving machine for the coal mine.

7. The grooving machine for coal mines according to claim 6, wherein,

the discharging mechanism comprises a collecting tray, the collecting tray is used for receiving slag materials brought to the ground by the cutting arm, and the collecting tray is communicated with the collecting hopper.

8. The grooving machine for coal mines according to claim 7, wherein,

the material conveying mechanism comprises a first material conveying machine, a second material conveying machine and a third material conveying machine which are sequentially connected from back to front, the material collecting tray is connected with the material collecting hopper through the first material conveying machine, the second material conveying machine is connected with the material collecting hopper and is arranged along the front-back direction, and the third material conveying machine is arranged along the transverse direction of the working platform.

9. The grooving machine for coal mines according to any one of claims 1 to 5,

the rotary support comprises two supports which are transversely arranged at intervals, and two ends of the rotary arm are respectively connected with the supports; the rotary power mechanism comprises a first hydraulic cylinder, one end of the first hydraulic cylinder is hinged with the rotary arm, and the other end of the first hydraulic cylinder is hinged with the working platform.

10. The grooving machine for coal mines according to claim 1, wherein,

the working platform comprises a crawler belt, and the crawler belt can drive the working platform to move.

11. The grooving machine for coal mines according to claim 10, wherein,

the working platform comprises a base, a telescopic platform and a ground supporting oil cylinder, wherein the telescopic platform is arranged on the base and can move back and forth relative to the base, and the swing arm mechanism is arranged on the telescopic platform; the ground supporting oil cylinder and the crawler belt are both arranged on the base, and the ground supporting oil cylinder can support the base so that the crawler belt is separated from the ground.

12. The grooving machine for coal mines according to claim 1, wherein,

the grooving machine for the coal mine comprises a push shovel and a second hydraulic cylinder, wherein the push shovel is rotatably arranged on the front side of the working platform, and the second hydraulic cylinder is connected with the push shovel to drive the push shovel to swing up and down.

13. The grooving machine for coal mines according to claim 1, wherein,

the grooving machine for the coal mine comprises a power platform, wherein the power platform and the working platform can independently move back and forth, and the power platform is connected with the working platform through cables and/or pipelines.