Self-propelled diamond bead wire saw coal seam cutting and seam forming device and control method thereof

Abstract

The invention discloses a self-propelled diamond bead wire saw coal seam cutting and seam forming device and a control method thereof.The device comprises a box body, a moving assembly, a transmission shaft, a speed-adjustable transmission assembly, a driving motor, a wire saw driving wheel and a cutting rope, and a rotating speed sensor is further arranged at the position, close to the wire saw driving wheel, of the box body; the rotating speed sensor is used for recognizing a rotating speed signal of the wire saw driving wheel and adjusting the transmission relation of the speed-adjustable transmission assembly according to data fed back by the rotating speed signal. The self-propelled diamond string bead wire saw cutting seam forming device is simple in structure, easy to install and use, good in flexibility and maneuverability, capable of moving on the two sides of a roadway, capable of conducting cutting seam forming on the passing coal seam, capable of adjusting the output torque in a self-adaptive mode, capable of coping with different cutting environments and emergency situations and high in practicability. The gas content and the internal pressure in the coal seam can be reduced, and the safety is higher.

Description

Technical Field

[0001] The invention relates to the technical field of coal seam cutting equipment, and in particular to a self-propelled diamond beaded wire saw coal seam cutting seam making device and a control method thereof. Background Art

[0002] Coal mines need to release and extract gas from coal seams before mining, otherwise there will be great safety hazards. The simplest and most effective way to control gas is to increase the gas extraction area through high-density drilling. However, this gas control method requires intensive drilling, which has the problems of high labor intensity, high labor intensity and low efficiency.

[0003] When processing coal and rock, diamond bead cutting equipment can be used to cut different coal and rock into seams according to requirements. However, since diamond bead cutting seams are rarely used in engineering, the diamond bead cutting process is not yet mature, and various problems are easily encountered during cutting work, resulting in unsmooth cutting and requiring maintenance by on-site workers. The present invention provides a collaboratively controlled self-propelled diamond bead wire saw coal seam cutting seam making device and control method. Summary of the invention

[0004] The purpose of the present invention is to provide a self-propelled diamond beaded wire saw coal seam cutting seam making device and a control method thereof in view of the problems existing in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A self-propelled diamond beaded wire saw coal seam cutting and seam making device, comprising a box body, a movable component under the box body, a transmission shaft connected to the movable component, and an adjustable speed transmission component connected to the transmission shaft are provided in the box body, and a driving motor connected to and driving the adjustable speed transmission component is also provided on the box body; the output end of the adjustable speed transmission component is connected to a wire saw driving wheel, the wire saw driving wheel is located on the outer side of the box body, a cutting rope is connected to the wire saw driving wheel, and a speed sensor is also provided on the box body near the wire saw driving wheel, the speed sensor is used to identify the speed signal of the wire saw driving wheel, and adjust the transmission relationship of the adjustable speed transmission component according to the data fed back by the speed signal.

[0006] This self-propelled diamond beaded wire saw coal seam cutting and seaming device has a simple structure, is easy to install and use, has good flexibility and maneuverability, can move on both sides of the tunnel, cut the coal seams it passes through into seams, and can adaptively adjust the output torque to cope with different cutting environments and emergencies. It can reduce the gas content and internal pressure in the coal seam and is safer.

[0007] This self-propelled diamond beaded wire saw coal seam cutting and seaming device can automatically walk and cut through the settings of the moving component, the adjustable speed transmission component and the driving motor, which reduces manual labor, reduces the intensity of manual labor, and improves cutting efficiency and construction speed. Through the setting of the transmission shaft, the driving component can simultaneously drive the movement of the moving component and the operation of the wire saw driving wheel, which not only simplifies the structure and number of driving motors, but also allows the moving speed to be associated with the cutting speed, allowing the moving component and the wire saw driving wheel to be coordinated and controlled, and can achieve the technical effect of slow walking and slow cutting or fast walking and fast cutting of the entire device.

[0008] The setting of the adjustable speed transmission component can switch different transmission ratios. The setting of the speed sensor can detect and identify the speed of the rope saw driving wheel. The transmission relationship of the adjustable speed transmission component can be adjusted according to different feedback signals of the speed, so that the device can cope with different cutting environments with the most appropriate transmission ratio. The switching and control of this transmission ratio can be completely identified and completed by the controller itself, with a high degree of automation and intelligence, avoiding manual work in complex environments.

[0009] Furthermore, the moving assembly includes multiple pairs of moving wheels arranged under the box body, the moving wheels are connected to the box body through a wheel frame, a walking wheel axle is provided between each pair of the moving wheels, and the walking wheel axle is connected to the transmission shaft through an output gear set; the moving wheels are set on a walking track and move along the walking track.

[0010] Furthermore, the boxes are a pair of boxes arranged in parallel with an interval, the rope saw driving wheels are respectively provided on the same side of each box, and the cutting rope is arranged around the pair of rope saw driving wheels to form a closed loop.

[0011] Furthermore, the cutting rope is a diamond bead rope, and the outer periphery of the rope saw driving wheel is provided with a circle of accommodating grooves, and a plurality of small holes are arranged at intervals in the accommodating grooves.

[0012] Furthermore, a guide wheel abutting against the cutting rope is provided on one side of the box body in the moving direction of the cutting rope, and the guide wheel is installed on the box body through a guide wheel bracket.

[0013] Furthermore, the adjustable speed transmission assembly includes a driving gear shaft and a driven gear shaft arranged in the housing, one end of the driving gear shaft is connected to the drive motor, and a plurality of driving gears are arranged at intervals on the driving gear shaft; one end of the driven gear shaft is connected to the rope saw drive wheel, and the driven gear shaft is connected to the transmission shaft through an input gear set, and a plurality of movable driven gears are arranged at intervals on the driven gear shaft, and the spacing between the driven gears is set differently from the spacing between the driving gears so that the driven gears can be meshed with the driving gears separately.

[0014] Furthermore, the driven gear shaft is provided with a driven engagement sleeve, the driven gear is arranged on the driven engagement sleeve, and the driven gear shaft is provided with an electromagnetic adsorption mechanism on at least one side of the driven engagement sleeve, and the electromagnetic adsorption mechanism adsorbs or releases the driven engagement sleeve.

[0015] Furthermore, the driving gear includes a first driving gear and a second driving gear, the driven gear includes a first driven gear and a second driven gear, the first driving gear is meshed with the first driven gear, or the second driving gear is meshed with the second driven gear; the wheel diameters of the second driving gear, the first driving gear, the first driven gear and the second driven gear are arranged to be gradually larger.

[0016] A control method for a self-propelled diamond beaded wire saw cutting coal seam seam forming device, the control method comprising the following steps: Install and debug the self-propelled diamond beaded wire saw coal seam cutting and seam making device; Starting the drive motor to control the adjustable speed transmission assembly to operate at a small transmission ratio; According to the detection data of the rotation speed sensor, it is judged whether the rotation speed of the driving wheel of the rope saw is reduced; if not, it is operated according to the small transmission ratio; if so, the adjustable speed transmission component is controlled to operate at a large transmission ratio; In the state of large transmission ratio operation, determine whether the rotation speed of the rope saw driving wheel increases; if not, continue to operate at the large transmission ratio; if so, control the adjustable speed transmission assembly to return to the small transmission ratio operation; The coal seam cutting is completed and the work is finished.

[0017] Furthermore, the control method further includes: When coal seam cutting becomes difficult, the adjustable speed transmission component is controlled to switch to a large transmission ratio operation, and the moving component is decelerated synchronously; When cutting into a softer coal seam, the adjustable speed transmission component is controlled to switch to a small transmission ratio operation, and the moving component is accelerated synchronously; When the cutting rope is stuck, the driving motor is controlled to reverse so that the cutting rope runs in the opposite direction, and the adjustable speed transmission component is controlled to switch to a large transmission ratio operation, and the moving component is decelerated synchronously; when the cutting rope is unstuck, the driving motor resumes forward rotation.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The self-propelled diamond beaded wire saw coal seam cutting and seaming device has a simple structure, is easy to install and use, has good flexibility and maneuverability, can move on both sides of the tunnel, cut the coal seams passing through into seams, and can adaptively adjust the output torque to cope with different cutting environments and emergencies, and has higher safety; 2. The self-propelled diamond beaded wire saw coal seam cutting and seaming device can automatically walk and cut through the settings of the moving component, the adjustable speed transmission component and the drive motor, which reduces manpower, reduces labor intensity, and improves cutting efficiency and construction speed; 3. The device can associate the moving speed with the cutting speed, and allows the moving component and the wire saw driving wheel to be coordinated and controlled, so as to achieve the technical effect of slow walking and slow cutting or fast walking and fast cutting of the entire device; 4. The setting of the adjustable speed transmission component can switch different transmission ratios, and the setting of the speed sensor can detect and identify the rotation speed of the wire saw driving wheel. speed, and the transmission relationship of the adjustable speed transmission component can be adjusted according to different feedback signals of the speed, so that the device can cope with different cutting environments with the most appropriate transmission ratio. The switching and control of this transmission ratio can be completely recognized and completed by the controller itself, with a high degree of automation and intelligence, avoiding manual work in complex environments; 5. During the cutting operation, when the output torque is insufficient, the meshing gear set can be switched to achieve deceleration and torque increase, and at the same time, the moving component can be coordinated to control the driving force, slow down and move forward, and reduce the cutting reverse torque; when the rope is stuck, the beaded rope can be reversed by controlling the driving motor to reverse, and the moving component can be controlled to move backward at the same time to achieve the purpose of bringing out the stuck beaded rope; 6. This method can greatly improve the escape ability of the device, can solve the problems encountered in cutting, and make the cutting go smoothly. It can reduce the gas content in the coal seam before the coal mining machine mines coal, and at the same time reduce the pressure inside the coal seam to facilitate the subsequent mining of the coal mining machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a self-propelled diamond beaded wire saw coal seam cutting and seam making device of the present invention; Figure 2 This is a schematic diagram of a self-propelled diamond beaded wire saw coal seam cutting and seam making device used in pairs according to the present invention; Figure 3 This is a schematic diagram of the internal structure of a self-propelled diamond beaded wire saw coal seam cutting and seam making device according to the present invention; Figure 4It is a schematic diagram of the structure of the driving wheel of the rope saw of the present invention; Figure 5 It is a schematic diagram of the control flow of the self-propelled diamond beaded wire saw coal seam cutting and seam making device of the present invention; In the figure: 1. driving motor; 2. housing; 3. driving gear shaft; 4. driving gear; 401. first driving gear; 402. second driving gear; 5. driven gear shaft; 6. meshing sleeve; 7. driven gear; 701. first driven gear; 702. second driven gear; 8. electromagnetic adsorption mechanism; 9. rope saw driving wheel; 901. accommodating groove; 902. small hole; 10. speed sensor; 11. guide wheel bracket; 12. guide wheel; 13. cutting rope; 14. input gear set; 15. transmission shaft; 16. output gear set; 17. walking wheel shaft; 18. moving wheel; 19. protective cover; 20. walking track. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] like Figures 1 to 4 As shown, a self-propelled diamond beaded wire saw coal seam cutting and seaming device comprises a box body 2, a movable component can be arranged below the box body 2, a transmission shaft 15 connected to the movable component and an adjustable speed transmission component connected to the transmission shaft 15 are arranged in the box body 2, and a driving motor 1 connected to and driving the adjustable speed transmission component is also arranged on the box body 2; a wire saw driving wheel 9 is connected to the output end of the adjustable speed transmission component, and the wire saw driving wheel 9 is located on the outer side of the box body 2, and a cutting rope 13 is connected to the wire saw driving wheel 9, and a speed sensor 10 is also arranged on the box body 2 near the wire saw driving wheel 9, and the speed sensor 10 is used to identify and detect the speed signal of the wire saw driving wheel 9, and adjust the transmission relationship of the adjustable speed transmission component according to the data fed back by the speed signal.

[0023] This self-propelled diamond beaded wire saw coal seam cutting and seaming device has a simple structure, is easy to install and use, has good flexibility and maneuverability, can move on both sides of the tunnel, cut the coal seams it passes through into seams, and can adaptively adjust the output torque to cope with different cutting environments and emergencies. It can reduce the gas content and internal pressure in the coal seam and is safer.

[0024] The self-propelled diamond beaded wire saw coal seam cutting and seaming device can automatically move and cut through the arrangement of the moving component, the adjustable speed transmission component and the driving motor, thereby reducing manpower, lowering labor intensity and improving cutting efficiency and construction speed.

[0025] Through the setting of the transmission shaft 15, the driving component can simultaneously drive the movement of the moving component and the operation of the rope saw driving wheel, which not only simplifies the structure and number of driving motors, but also allows the moving speed and cutting speed to be associated, allowing the moving component and the rope saw driving wheel to be controlled cooperatively, and can achieve the technical effect of slow walking and slow cutting or fast walking and fast cutting of the entire device.

[0026] The box body 2 is configured to serve as a bearing component for mounting and supporting the transmission shaft 15, the adjustable speed transmission assembly and the rope saw driving wheel 9, and can also be used as a cover to shield these transmission components to prevent dust and other debris from affecting the transmission components during the cutting process.

[0027] The setting of the adjustable speed transmission component can switch different transmission ratios. The setting of the speed sensor 10 can detect and identify the rotational speed of the rope saw driving wheel. The transmission relationship of the adjustable speed transmission component can be adjusted according to different feedback signals of the rotational speed, so that the device can cope with different cutting environments with the most appropriate transmission ratio. The switching and control of this transmission ratio can be completely identified and completed by the controller itself, with a high degree of automation and intelligence, avoiding manual work in complex environments.

[0028] Furthermore, the moving assembly includes a plurality of pairs of moving wheels 18 arranged under the box body 2, the moving wheels 18 are connected to the box body 2 through a wheel frame, a walking wheel axle 17 is provided between each pair of the moving wheels 18, and the walking wheel axle 17 is connected to the transmission shaft 15 through an output gear set 16; the moving wheels 18 are set on a walking track 20 and move along the walking track 20.

[0029] The arrangement of the moving wheel 18 and the walking track 20 allows the device to move along a predetermined route and purposefully cut and seam the coal seam. The walking wheel shaft 17 and the transmission shaft 15 are connected via the output gear set 16. The output gear set 16 is a pair of mutually meshing bevel gears that can convert vertical rotational motion into horizontal rotational motion, thereby driving the moving wheel to move. The bottom of the housing 2 is a closed structure. The transmission shaft 15 passes through the bottom of the housing 2 and is connected to the output gear set 16. A protective cover 19 is also provided on the output gear set 16 to avoid the influence of dust.

[0030] Furthermore, the box bodies 2 are a pair of boxes arranged in parallel at an interval, and the rope saw driving wheels 9 are respectively provided on the same side of each box body 2, and the cutting rope 13 is arranged around the pair of rope saw driving wheels 9 to form a closed loop.

[0031] A pair of boxes 2 are arranged on the travel tracks in the tunnels on both sides of the coal seam. The two boxes are arranged separately and can be controlled independently or collaboratively. The two boxes move forward along the track together to complete the cutting operation.

[0032] Furthermore, the cutting rope 13 is a diamond bead rope, and the outer periphery of the rope saw driving wheel 9 is provided with a circle of accommodating grooves 901 , and a plurality of small holes 902 are arranged at intervals in the accommodating grooves 901 .

[0033] The diamond bead rope is formed by connecting the beads containing diamond abrasive grains in order at equal intervals by a steel wire rope, so that it has the characteristics of easy installation, flexible operation, and low environmental pollution. The setting of the receiving groove can make the diamond bead rope better wound around the rope saw driving wheel, and the small holes 902 arranged at intervals can correspond to each bead. The shapes of the two are basically the same, which can play a limiting role, avoid relative movement and slipping between the two, and also prevent the cutting rope from falling off.

[0034] Furthermore, a guide wheel 12 abutting against the cutting rope 13 is provided on one side of the box body 2 at the moving direction of the cutting rope 13 , and the guide wheel 12 is installed on the box body 2 through a guide wheel bracket 11 .

[0035] The guide wheel 12 is configured to guide the movement of the cutting rope 13, has a good guiding and limiting effect, reduces the jumping and fluctuation of the cutting rope 13, prevents the diamond bead rope from falling off during the cutting operation, and is conducive to stable cutting.

[0036] Furthermore, the adjustable speed transmission assembly includes a driving gear shaft 3 and a driven gear shaft 5 arranged in the housing 2, one end of the driving gear shaft 3 is connected to the driving motor 1, and a plurality of driving gears 4 are arranged at intervals on the driving gear shaft 3; one end of the driven gear shaft 5 is connected to the rope saw driving wheel 9, and the driven gear shaft 5 is connected to the transmission shaft 15 through an input gear set 14, and a plurality of movable driven gears 7 are arranged at intervals on the driven gear shaft 5, and the spacing between the driven gears 7 is set differently from the spacing between the driving gears 4, so that the driven gears 7 and the driving gears 4 can be meshed separately.

[0037] The input gear set 14 is also a pair of mutually meshing bevel gears, which can convert horizontal rotational motion into vertical rotational motion, so that when the driven gear shaft 5 rotates, the transmission shaft 15 and the rope saw driving wheel 9 are synchronously driven to rotate, thereby realizing dual control of movement and rope saw cutting.

[0038] The driving gear shaft 3 and the driven gear shaft 5 are arranged parallel to each other. By utilizing the meshing relationship between the multiple driving gears 4 and the driven gear 7 arranged above the two and cooperating with the movable structure of the driven gear 7, different driving gears 4 can be meshed with the driven gear 7, so that different transmission ratios can be formed, and the rope saw driving wheel 9 can obtain different rotation speeds or torques, which is more conducive to the whole device to cope with different cutting environments. It can well solve the problems of rope jamming and insufficient cutting force that may occur in actual cutting operations. During the cutting operation, when the output torque is insufficient, the gear set can be switched to achieve deceleration and torque increase, and the moving assembly can be coordinated to control the driving force, slow down and advance, and reduce the cutting reverse torque. When the rope jam problem occurs, the bead rope can be reversed by controlling the driving motor to reverse, and the moving assembly can be controlled to move backward at the same time to achieve the purpose of taking out the jammed bead rope.

[0039] Furthermore, the driven gear shaft 5 is provided with a driven meshing sleeve 6, the driven gear 7 is arranged on the driven meshing sleeve 6, and the driven gear shaft 5 is provided with an electromagnetic adsorption mechanism 8 on at least one side of the driven meshing sleeve 6, and the electromagnetic adsorption mechanism 8 adsorbs or releases the driven meshing sleeve 6.

[0040] The electromagnetic adsorption mechanism 8 includes an annular disc-shaped electromagnet (electromagnet) arranged on the driven gear shaft 5, and an electromagnetic controller connected to the electromagnet. After receiving the adjustment instruction of the speed signal feedback, the electromagnetic controller can make the electromagnet adsorb or release the driven meshing sleeve 6, so that the driven meshing sleeve 6 can move axially, so that the position of the driven gear can be changed so that the driven gear and the driving gear can switch to a different meshing relationship.

[0041] The electromagnetic adsorption mechanism 8 can be arranged on one side or on both sides; the outer periphery of the driven gear shaft 5 is provided with axial connecting teeth or connecting grooves, which can allow the driven meshing sleeve 6 to move relatively in the axial direction after being connected to the driven meshing sleeve 6, but will not move relatively in the circumferential direction, and the driven meshing sleeve 6 and the driven gear shaft 5 can rotate synchronously better.

[0042] Furthermore, the driving gear 4 includes a first driving gear 401 and a second driving gear 402, and the driven gear 7 includes a first driven gear 701 and a second driven gear 702. The first driving gear 401 is meshed with the first driven gear 701, or the second driving gear 402 is meshed with the second driven gear 702; the wheel diameters of the second driving gear 402, the first driving gear 401, the first driven gear 701 and the second driven gear 702 are gradually increased.

[0043] By controlling the axial spacing between the gears and the corresponding relationship, the meshing relationship between the first driving gear and the first driven gear, and the meshing relationship between the second driving gear and the second driven gear can be switched under the axial movement of the driven meshing sleeve, so that the device can achieve various driving states such as low speed and high torque, high speed, etc.

[0044] A control method for a self-propelled diamond beaded wire saw cutting coal seam seam making device, combined with Figure 5 As shown, the control method comprises the following steps: Install and debug the self-propelled diamond beaded wire saw coal seam cutting and seam making device; Starting the drive motor 1 to control the adjustable speed transmission assembly to operate at a small transmission ratio; According to the detection data of the rotation speed sensor 10, it is judged whether the rotation speed of the rope saw driving wheel 9 is reduced; if not, it is operated according to the small transmission ratio; if so, the adjustable speed transmission component is controlled to operate at a large transmission ratio; In the state of large transmission ratio operation, determine whether the rotation speed of the rope saw driving wheel 9 increases; if not, continue to operate at the large transmission ratio; if so, control the adjustable speed transmission assembly to return to the small transmission ratio operation; The coal seam cutting is completed and the work is finished.

[0045] By setting the speed sensor 10, the adjustable speed transmission assembly and the drive motor 1, the cutting force can be changed and the transmission ratio can be adjusted according to the active adjustment of the transmission ratio, so as to achieve the output torque adaptively adjusted when cutting coal seams of different hardness. The above control method can be automatically performed by the device, self-identified and controlled without human intervention.

[0046] Furthermore, the control method also includes: arranging the diamond bead rope loop on the two rope saw driving wheels 9, starting the driving motor 1, making the diamond bead rope run at high speed, and at the same time the moving component moves forward along the walking track 20 to start the cutting operation.

[0047] When coal seam cutting becomes difficult, the adjustable speed transmission component is controlled to switch to a large transmission ratio, and the moving component is decelerated synchronously; specifically, when the speed sensor 10 identifies that the operating speed of the rope saw drive wheel 9 decreases, the electromagnetic adsorption mechanism 8 is adaptively controlled to allow the driven gear 7 to be adsorbed and moved through the driven meshing sleeve, so that each gear switches to a large transmission ratio gear group for meshing, thereby increasing the output torque. At the same time, due to the decrease in the speed of the driven gear shaft 5, the rotation speed of the transmission shaft will also decrease, and then the travel speed of the moving component will be reduced synchronously, so that the device continues the cutting operation at a low speed and high torque, which is beneficial for the device to cut harder coal seams.

[0048] When cutting a softer coal seam, the adjustable speed transmission component is controlled to switch to a small transmission ratio, and the moving component is accelerated synchronously. Specifically, when the speed sensor 10 identifies that the operating speed of the rope saw drive wheel 9 has increased, the electromagnetic adsorption mechanism 8 is adaptively controlled to make the driven gear 7 move by being adsorbed by the driven meshing sleeve, so that the gear switches to a small transmission ratio gear group for meshing, further increasing the cutting speed. At the same time, due to the increase in the speed of the driven gear shaft 5, the travel speed of the moving component increases synchronously, so that the device continues the cutting operation at high speed and low torque, which is beneficial to improving the cutting efficiency.

[0049] That is, through the above control method, the device can achieve maximum working efficiency under the action of the same set of drive motors, which can not only overcome the problems of difficult coal seam cutting and insufficient power, but also speed up the cutting of soft coal seams to improve the overall cutting efficiency.

[0050] When the cutting rope is stuck, the driving motor is controlled to reverse so that the cutting rope runs in the opposite direction, and the adjustable speed transmission component is controlled to switch to a large transmission ratio operation, and the moving component is decelerated synchronously; when the cutting rope is unstuck, the driving motor resumes forward rotation.

[0051] Specifically, when the rope is stuck, the speed sensor 10 recognizes that the speed of the rope saw driving wheel 9 is zero, and the driving motor 1 is immediately controlled to reverse, so that the cutting rope 13 runs in the opposite direction. At the same time, the electromagnetic adsorption mechanism 8 is adaptively controlled to make the driven gear move through the adsorption of the driven meshing sleeve, so that the driven gear and the driving gear are switched to a large transmission ratio gear set for meshing. At the same time, the moving component will also move in the opposite direction, so that the device as a whole moves backward at a low speed and high torque to bring out the stuck cutting rope 13.

[0052] When the cutting rope 13 is brought out, the driving motor 1 is controlled to resume forward rotation, while maintaining the meshing of the large transmission ratio gear set, so that the device as a whole runs forward at a low speed and large transmission ratio, and continues the cutting operation. After passing the rope clamping position, the meshing gear set is adaptively adjusted according to the coal seam conditions to complete the cutting operation. Through the above method, the ability of the device to escape from difficulties can be greatly improved, and the problems encountered in cutting can be solved, so that the cutting can proceed smoothly. The gas content in the coal seam can be reduced before the coal mining machine mines coal, and the pressure inside the coal seam can be reduced to facilitate the subsequent mining of the coal mining machine.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-propelled diamond beaded wire saw for cutting coal seams, characterized in that: It comprises a box body, under which a component can be moved, wherein a transmission shaft connected to the moving component and an adjustable speed transmission component connected to the transmission shaft are arranged in the box body, and a driving motor connected to and driving the adjustable speed transmission component is also arranged on the box body; an output end of the adjustable speed transmission component is connected to a rope saw driving wheel, the rope saw driving wheel is located on the outer side of the box body, a cutting rope is connected to the rope saw driving wheel, and a speed sensor is also arranged on the box body near the rope saw driving wheel, the speed sensor is used to identify the speed signal of the rope saw driving wheel, and adjust the transmission relationship of the adjustable speed transmission component according to the data fed back by the speed signal.

2. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 1, characterized in that: The moving assembly includes a plurality of pairs of moving wheels arranged below the box body, the moving wheels are connected to the box body through a wheel frame, a walking wheel axle is provided between each pair of the moving wheels, and the walking wheel axle is connected to the transmission shaft through an output gear set; the moving wheels are arranged on a walking track and move along the walking track.

3. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 1, characterized in that: The boxes are a pair of boxes arranged in parallel with each other, and the rope saw driving wheels are respectively arranged on the same side of each box. The cutting rope is arranged around the pair of rope saw driving wheels to form a closed loop.

4. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 1, characterized in that: The cutting rope is a diamond bead rope, and the outer periphery of the rope saw driving wheel is provided with a circle of accommodating grooves, and a plurality of small holes are arranged at intervals in the accommodating grooves.

5. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 1, characterized in that: A guide wheel abutting against the cutting rope is provided on one side of the box body in the moving direction of the cutting rope, and the guide wheel is installed on the box body through a guide wheel bracket.

6. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 1, characterized in that: The adjustable speed transmission assembly includes a driving gear shaft and a driven gear shaft arranged in the housing, one end of the driving gear shaft is connected to the driving motor, and a plurality of driving gears are arranged at intervals on the driving gear shaft; one end of the driven gear shaft is connected to the rope saw driving wheel, and the driven gear shaft is connected to the transmission shaft through an input gear set, and a plurality of movable driven gears are arranged at intervals on the driven gear shaft, and the spacing between the driven gears is set differently from the spacing between the driving gears so that the driven gears can be meshed with the driving gears separately.

7. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 6, characterized in that: The driven gear shaft is provided with a driven meshing sleeve, the driven gear is arranged on the driven meshing sleeve, and the driven gear shaft is provided with an electromagnetic adsorption mechanism on at least one side of the driven meshing sleeve, and the electromagnetic adsorption mechanism adsorbs or releases the driven meshing sleeve.

8. The self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 6, characterized in that: The driving gear includes a first driving gear and a second driving gear, the driven gear includes a first driven gear and a second driven gear, the first driving gear is meshed with the first driven gear, or the second driving gear is meshed with the second driven gear; The wheel diameters of the second driving gear, the first driving gear, the first driven gear and the second driven gear are gradually increased.

9. A control method for the self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 6, characterized in that: The control method comprises the following steps: Install and debug the self-propelled diamond beaded wire saw coal seam cutting and seam making device; Starting the drive motor to control the adjustable speed transmission assembly to operate at a small transmission ratio; According to the detection data of the rotation speed sensor, it is judged whether the rotation speed of the driving wheel of the rope saw is reduced; if not, it is operated according to the small transmission ratio; if so, the adjustable speed transmission component is controlled to operate at a large transmission ratio; In the state of large transmission ratio operation, determine whether the rotation speed of the rope saw driving wheel increases; if not, continue to operate at the large transmission ratio; if so, control the adjustable speed transmission assembly to return to the small transmission ratio operation; The coal seam cutting is completed and the work is finished.

10. The control method of the self-propelled diamond bead wire saw coal seam cutting and seam making device according to claim 9, characterized in that: The control method further comprises: When coal seam cutting becomes difficult, the adjustable speed transmission component is controlled to switch to a large transmission ratio operation, and the moving component is decelerated synchronously; When cutting into a softer coal seam, the adjustable speed transmission component is controlled to switch to a small transmission ratio operation, and the moving component is accelerated synchronously; When the cutting rope is stuck, the driving motor is controlled to reverse so that the cutting rope runs in the opposite direction, and the adjustable speed transmission component is controlled to switch to a large transmission ratio operation, and the moving component is decelerated synchronously; when the cutting rope is unstuck, the driving motor resumes forward rotation.

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