Self-moving machine tail device for coal mine roadway tunneling

Abstract

The invention discloses a self-moving tail device for coal mine tunnel tunneling, which comprises a tail bracket unit, a support transition unit, a hinge transition unit, a sliding shoe unit and a power unit, the tail bracket unit comprises a turnabout tail bracket body and a turnabout drum rotationally arranged on the turnabout tail bracket body, and the support transition unit comprises a transition frame body; the transition frame body is hinged with the redirection tail frame body; the supporting transition unit further comprises a driving track part; the hinge transition unit comprises a first hinge frame body and a second hinge frame body, and the first hinge frame body is hinged to the second hinge frame body; the sliding shoe unit comprises a sliding shoe frame body and a guide sliding shoe arranged on the sliding shoe frame body, and the power unit is used for providing operation power for the tailstock unit, the supporting transition unit, the hinge transition unit and the sliding shoe unit. According to the self-advancing tail device for coal mine roadway tunneling, shutdown and extension of a conveying system in the tunneling operation process are avoided, the labor intensity of workers is reduced, and the single-advancing level is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine excavation equipment and peripheral supporting facilities thereof, in particular to a self-moving machine tail device for coal mine tunnel excavation. Background Art

[0002] Coal mine tunneling is a complex process involving a variety of technologies and equipment. The self-moving tail used in coal mine tunneling is a conveyor tail device that can move with the advancement of the mining face, enabling continuous transportation of coal.

[0003] At present, the supporting transportation system after tunnel excavation in domestic coal mines generally adopts a bridge-type transfer machine and a belt conveyor with a walking self-moving machine tail overlapping. Under the geological conditions of low tunnel height and large tunnel undulations, the overlapping stroke is generally between 15m and 30m. Due to the limited overlapping distance, the belt conveyor needs to be stopped during the tunnel excavation production operation to extend the belt conveyor, and the extension speed of the walking self-moving machine tail is slow, which affects the efficiency of the excavation equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a self-moving tail device for coal mine tunnel excavation to solve the problems existing in the above-mentioned related technologies, realize the follow-up continuous operation of the supporting transportation system after excavation, improve the efficiency of tunnel excavation, and completely avoid the problems of long moving time, low efficiency and poor safety of excavation and transportation equipment during excavation operations.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a self-moving tail device for coal mine tunnel excavation, comprising:

[0007] A tailstock unit, the tailstock unit comprising a redirecting tailstock body and a redirecting roller rotatably arranged on the redirecting tailstock body, the redirecting roller being capable of supporting a conveying belt and changing a running direction of the conveying belt;

[0008] A support transition unit, wherein the support transition unit comprises a transition frame, wherein the transition frame is hinged to the redirecting tail frame; the support transition unit further comprises a driving crawler portion, wherein the driving crawler portion is arranged on both sides of the transition frame and can drive the support transition unit to move;

[0009] An articulated transition unit, the articulated transition unit comprises a first articulated frame and a second articulated frame, the first articulated frame is articulated with the second articulated frame; the support transition unit and the articulated transition unit correspond to each other one by one, when multiple groups of the support transition units and the articulated transition units are provided, the first articulated frame is articulated with the transition frame of the previous group of the support transition units, and the second articulated frame is articulated with the transition frame of the next group of the support transition units;

[0010] A sliding shoe unit, the sliding shoe unit comprising a sliding shoe frame and a guide sliding shoe arranged on the sliding shoe frame, the sliding shoe frame being hingedly connected to the second hinge frame of the last group of the hinge transition units;

[0011] A power unit is arranged on the sliding shoe frame, and is used to provide operating power for the tail frame unit, the support transition unit, the articulated transition unit and the sliding shoe unit.

[0012] Preferably, a roller group and a buffer bed device are provided on the transition frame, the first articulated frame, the second articulated frame and the sliding shoe frame, and the roller group and the buffer bed device can support the conveyor belt and buffer the impact force exerted on the conveyor belt.

[0013] Preferably, the tail frame unit also includes a roller adjusting cylinder, a floating coal cleaner and a belt cleaner. The redirecting roller is connected to the redirecting tail frame body by means of the roller adjusting cylinder to adjust the relative position of the redirecting roller and the redirecting tail frame body to tension the conveying belt; along the movement direction of the conveying belt, the floating coal cleaner is arranged behind the redirecting roller to clean up spilled materials, and the belt cleaner is located in front of the redirecting roller to clean up materials on the conveying belt.

[0014] Preferably, the driving track portion includes a track frame, a power element, a track sprocket and a walking track, the track frame is connected to the transition frame, the power element is arranged on the track frame, and the output end of the power element is transmission-connected to the track sprocket, the track sprocket is rotatably arranged on the track frame, and the track sprocket can tension the walking track to drive the walking track to move.

[0015] Preferably, the power element comprises a hydraulic motor and a reducer, the hydraulic motor is connected to the track sprocket by means of the reducer, and the power element is connected to the power unit to drive the power element.

[0016] Preferably, the supporting transition unit also includes a lifting and adjusting mechanism, which includes a lifting and adjusting mechanism including a lifting support seat, an adjusting sliding seat and a sliding base. The lifting support seats are in two groups and are respectively connected to both sides of the width direction of the transition frame. A lifting cylinder is arranged in the lifting support seat, and the movable end of the lifting cylinder is connected to the adjusting sliding seat. The adjusting sliding seat can be slidably arranged on the sliding base, and the sliding direction of the adjusting sliding seat is parallel to the width direction of the transition frame. The adjusting sliding seat is connected to the adjusting cylinder, and the adjusting sliding seat and the adjusting cylinder correspond to the lifting support seat one by one.

[0017] Preferably, a lifting inner sleeve is further provided in the lifting support seat, and the lifting cylinder is connected to the deviation adjustment sliding seat by means of the lifting inner sleeve;

[0018] The number of the lifting and adjusting mechanisms is two groups, and the two groups of the lifting and adjusting mechanisms are respectively arranged at the two ends of the length direction of the transition frame.

[0019] Preferably, the first articulated frame and the second articulated frame both have an articulated hole, the first articulated frame is hingedly connected to the second articulated frame by using the articulated hole, and the axis of the articulated hole is parallel to the vertical direction;

[0020] A swing cylinder is also provided between the first articulated frame and the second articulated frame, and both ends of the swing cylinder are respectively hingedly connected to the first articulated frame and the second articulated frame, and the articulation axis of the swing cylinder and the first articulated frame and the second articulated frame is parallel to the axis of the articulation hole; the number of the swing cylinders is two groups, and the two swing cylinders are respectively arranged on both sides of the width direction of the first articulated frame and the second articulated frame; a universal joint is also provided between the first articulated frame and the second articulated frame.

[0021] Preferably, a connecting pin hole is provided on the redirecting tail frame body, and the redirecting tail frame body is hinged to the transition frame body by means of the connecting pin hole and a hinge pin shaft, and the axis of the connecting pin hole is parallel to the horizontal direction.

[0022] Preferably, the power unit comprises a hydraulic system and an electric system to provide power to the tail frame unit, the support transition unit, the articulated transition unit and the sliding shoe unit.

[0023] Compared with the related art, the present invention has achieved the following technical effects: the self-moving tail device for coal mine tunnel excavation of the present invention includes a tail frame unit, a support transition unit, an articulated transition unit, a sliding shoe unit and a power unit, wherein the tail frame unit includes a redirecting tail frame body and a redirecting roller rotatably arranged on the redirecting tail frame body, and the redirecting roller can support the conveyor belt and change the running direction of the conveyor belt; the support transition unit includes a transition frame body, and the transition frame body is hinged to the redirecting tail frame body; the support transition unit also includes a driving crawler part, which is arranged on both sides of the transition frame body and can drive the support transition unit to move; the articulated transition unit includes a first articulated frame body and the second articulated frame, the first articulated frame is articulated with the second articulated frame; the support transition unit and the articulated transition unit correspond to each other one by one, when multiple groups of support transition units and articulated transition units are set, the first articulated frame is articulated with the transition frame of the previous group of support transition units, and the second articulated frame is articulated with the transition frame of the latter group of support transition units; the slipper unit includes a slipper frame and a guide slipper arranged on the slipper frame, and the slipper frame is articulated with the second articulated frame of the last group of articulated transition units; the power unit is arranged on the slipper frame, and the power unit is used to provide operating power for the tail frame unit, the support transition unit, the articulated transition unit and the slipper unit.

[0024] The self-moving tail device for coal mine tunnel excavation of the present invention is based on the overlapping transfer form of the belt transfer machine. The belt transfer machine is overlapped with the self-moving tail device for coal mine tunnel excavation. The overlapping stroke is determined by the length of the belt transfer machine. When the overlapping stroke reaches the limit, the self-moving tail device for coal mine tunnel excavation starts to move forward to supplement the stroke for the next round of excavation. The present invention changes the traditional self-moving tail movement mode, adopts a driving crawler part of a multi-support transition unit to pull the belt tail and a long-distance belt linkage control system, so that the rear supporting transportation system can quickly move the tail without stopping, meet the continuous load-bearing of the bridge transfer machine, avoid the shutdown and extension of the conveying system during the excavation operation, and realize the synchronous extension and continuous transportation of the conveying system with the advancement of excavation, which completely avoids the problems of long moving time, low efficiency and poor safety of the excavation and transportation equipment during the excavation operation, greatly reduces the labor intensity, effectively improves the single-entry level, and at the same time, based on the supporting device, ensures the safety of the operating personnel and alleviates the tense situation of mine succession. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1This is a schematic structural diagram of a self-moving tail device for coal mine tunnel excavation disclosed in an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a tail frame unit of a self-moving machine tail device for coal mine tunnel excavation disclosed in an embodiment of the present invention;

[0028] Figure 3 It is a structural schematic diagram of a support transition unit of a self-moving tail device for coal mine tunnel excavation disclosed in an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a lifting and deviation adjustment mechanism of a self-moving tail device for coal mine tunnel excavation disclosed in an embodiment of the present invention;

[0030] Figure 5 It is a structural schematic diagram of an articulated transition unit of a self-moving tail device for coal mine tunnel excavation disclosed in an embodiment of the present invention;

[0031] Figure 6 The present invention is a schematic structural diagram of a sliding shoe unit of a self-moving tail device for coal mine tunnel excavation disclosed in an embodiment of the present invention.

[0032] In the figure: 100, self-moving tail device for tunneling in coal mines;

[0033] 101, tail frame unit; 102, support transition unit; 103, articulated transition unit; 104, sliding shoe unit; 105, power unit; 106, redirection tail frame body; 107, redirection roller; 108, roller adjustment cylinder; 109, floating coal cleaner; 110, belt cleaner; 111, connecting pin hole; 112, transition frame; 113, driving crawler; 114, hydraulic motor; 115, reducer; 116 , lifting and deflection adjustment mechanism; 117, buffer bed device; 118, roller group; 119, lifting support seat; 120, lifting cylinder; 121, deflection adjustment sliding seat; 122, sliding base; 123, deflection adjustment cylinder; 124, lifting inner sleeve; 125, first articulated frame; 126, second articulated frame; 127, articulated hole; 128, swing cylinder; 129, universal joint; 130, sliding shoe frame; 131, guide sliding shoe. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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.

[0035] The purpose of the present invention is to provide a self-moving tail device for coal mine tunnel excavation to solve the problems existing in the above-mentioned related technologies, realize the follow-up continuous operation of the supporting transportation system after excavation, improve the efficiency of tunnel excavation, and completely avoid the problems of long moving time, low efficiency and poor safety of excavation and transportation equipment during excavation operations.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Embodiment 1

[0038] The present invention provides a self-moving tail device 100 for coal mine tunnel excavation, please refer to Figure 1-Figure 6 , including a tail frame unit 101, a support transition unit 102, an articulated transition unit 103, a sliding shoe unit 104 and a power unit 105, wherein the tail frame unit 101 includes a redirecting tail frame body 106 and a redirecting roller 107 rotatably arranged on the redirecting tail frame body 106, and the redirecting roller 107 can support the conveyor belt and change the running direction of the conveyor belt; the support transition unit 102 includes a transition frame body 112, and the transition frame body 112 is hinged to the redirecting tail frame body 106; the support transition unit 102 also includes a driving crawler part 113, and the driving crawler part 113 is arranged on both sides of the transition frame body 112, and can drive the support transition unit 102 to move; the articulated transition unit 103 includes a first articulated frame body 125 and a second articulated frame body 126, and the first articulated frame body 125 and the second articulated frame body 1 26 is hinged; the support transition unit 102 and the hinged transition unit 103 correspond to each other one by one. When multiple groups of support transition units 102 and hinged transition units 103 are set, the first hinge frame 125 is hinged to the transition frame 112 of the previous group of support transition units 102, and the second hinge frame 126 is hinged to the transition frame 112 of the latter group of support transition units 102; the slipper unit 104 includes a slipper frame 130 and a guide slipper 131 arranged on the slipper frame 130, and the slipper frame 130 is hinged to the second hinge frame 126 of the last group of hinged transition units 103; the power unit 105 is arranged on the slipper frame 130, and the power unit 105 is used to provide operating power for the tail frame unit 101, the support transition unit 102, the hinged transition unit 103 and the slipper unit 104.

[0039] When the self-moving tail device 100 for coal mine tunnel excavation of the present invention is working, on the basis of the overlapping transfer form of the belt transfer machine, the belt transfer machine is overlapped with the self-moving tail device 100 for coal mine tunnel excavation of the present invention, and the overlapping stroke is determined by the length of the belt transfer machine. When the overlapping stroke reaches the limit, the self-moving tail device 100 for coal mine tunnel excavation of the present invention starts to move forward to supplement the stroke for the next round of excavation. The present invention changes the traditional self-moving tail movement mode, and adopts the driving crawler part 113 of the multi-support transition unit 102 to pull the belt tail and the long-distance belt linkage control system, so as to realize the rear supporting transportation system to quickly move the tail without stopping, meet the continuous load-bearing of the bridge transfer machine, avoid the shutdown and extension of the conveying system during the excavation operation, and realize the synchronous extension and continuous transportation of the conveying system with the advancement of excavation, which completely avoids the problems of long moving time, low efficiency and poor safety of the excavation and transportation equipment during the excavation operation, greatly reduces the labor intensity, effectively improves the single-entry level, and at the same time, based on the supporting device, ensures the safety of the operating personnel and alleviates the tense situation of mine succession.

[0040] It needs to be explained here that the conveyor belt and the belt frame are both part of the belt conveyor. The belt conveyor is equipment of the tunneling tunnel transportation system. It is common knowledge for those skilled in the art and will not be elaborated here.

[0041] Among them, the transition frame 112, the first articulated frame 125, the second articulated frame 126 and the sliding shoe frame 130 are all provided with a roller group 118 and a buffer bed device 117. The roller group 118 and the buffer bed device 117 can support the conveyor belt and buffer the impact force exerted on the conveyor belt, thereby improving the working efficiency of the self-moving tail device 100 for coal mine tunnel excavation and improving the material transportation quality.

[0042] Specifically, the tail frame unit 101 includes a redirecting tail frame body 106 and a redirecting roller 107 rotatably arranged on the redirecting tail frame body 106. The redirecting roller 107 can support the conveying belt and change the running direction of the conveying belt to ensure the smooth conveying of coal materials. The tail frame unit 101 also includes a roller adjustment cylinder 108, a floating coal cleaner 109 and a belt cleaner 110. The redirecting roller 107 is connected to the redirecting tail frame body 106 by the roller adjustment cylinder 108 to adjust the relative position of the redirecting roller 107 and the redirecting tail frame body 106 to tighten the conveying belt; along the moving direction of the conveying belt, the floating coal cleaner 109 is arranged behind the redirecting roller 107 to clean up the spilled materials, and the belt cleaner 110 is located in front of the redirecting roller 107 to clean up the materials on the conveying belt. The tail frame unit 101 is composed of a redirecting tail frame body 106 as a frame, and a redirecting roller 107 is installed at the front end of the redirecting tail frame body 106. The connecting ears extending from both ends of the redirecting roller 107 are connected to the connecting ears at both ends of the redirecting tail frame body 106 through a roller adjustment cylinder 108, which can adjust the position of the redirecting roller 107 and tighten the conveying belt to prevent the streamer. A floating coal cleaner 109 is arranged behind the redirecting roller 107 to facilitate manual cleaning of the coal scattered near the redirecting roller 107 to prevent the coal jam from damaging the redirecting roller 107. Before the conveying belt passes around the redirecting roller 107, it will pass through a belt cleaner 110 to scrape the coal on the belt before passing through the redirecting roller 107, thereby enhancing the protection of the redirecting roller 107 and extending the service life of the device.

[0043] The support transition unit 102 includes a transition frame 112, which is hinged with the redirection tail frame 106 to adapt to the ups and downs of the tunnel and ensure the system transportation efficiency. The support transition unit 102 also includes a drive crawler 113, which is arranged on both sides of the transition frame 112 and can drive the support transition unit 102 to move. The support transition unit 102 serves as the fuselage carrier of the self-moving tail device 100 for coal mine tunnel excavation, and uses the drive crawler 113 to drive the self-moving tail device 100 for coal mine tunnel excavation to move, so as to achieve the coordination of the advancement of the belt transfer machine and the movement of the belt conveyor tail during the advancement of the working face, thereby improving the excavation work efficiency. The driving crawler part 113 includes a crawler frame, a power element, a crawler sprocket and a walking crawler. The crawler frame is connected to the transition frame 112. The power element is arranged on the crawler frame, and the output end of the power element is connected to the crawler sprocket. The crawler sprocket is rotatably arranged on the crawler frame. The crawler sprocket can tighten the walking crawler to drive the walking crawler to move. The present invention adopts the driving crawler part 113 to realize the walking movement function, which improves the adaptability of the device to the tunnel walking environment.

[0044] In this specific embodiment, the power element includes a hydraulic motor 114 and a reducer 115. The hydraulic motor 114 is connected to the track sprocket by means of the reducer 115, and the power element is connected to the power unit 105 to drive the power element.

[0045] It should also be noted that the support transition unit 102 also includes a lifting and adjusting mechanism 116. When the self-moving tail device 100 for coal mine tunnel excavation needs to adjust the position of the fuselage, the lifting and adjusting mechanism 116 can be used to lift the support transition unit 102 to adjust its position and angle, thereby achieving the purpose of adjusting the position of the fuselage. The lifting and deflection adjustment mechanism 116 includes a lifting support seat 119, a deflection adjustment sliding seat 121 and a sliding base 122. The lifting support seats 119 are in two groups and are respectively connected to both sides of the width direction of the transition frame 112. A lifting oil cylinder 120 is arranged in the lifting support seat 119. The movable end of the lifting oil cylinder 120 is connected to the deflection adjustment sliding seat 121. The deflection adjustment sliding seat 121 is slidably arranged on the sliding base 122. The sliding direction of the deflection adjustment sliding seat 121 is parallel to the width direction of the transition frame 112. The deflection adjustment sliding seat 121 is connected to the deflection adjustment oil cylinder 123. The deflection adjustment sliding seat 121 and the deflection adjustment oil cylinder 123 correspond to the lifting support seat 119 one by one. When the lifting and deflection adjustment mechanism 116 is not working, the lifting oil cylinder 120 is in a retracted state. When the position of the fuselage needs to be adjusted, the lifting cylinder 120 will extend to lower the lifting and adjusting mechanism 116 to the ground and then continue to extend until the driving crawler part 113 on the support transition unit 102 leaves the ground to adjust the lateral position. The adjustment cylinder 123 drives the adjustment sliding seat 121 to move along the sliding base 122, so as to achieve the purpose of adjusting the lateral position of the support transition unit 102.

[0046] In this specific embodiment, a lifting inner sleeve 124 is also provided in the lifting support seat 119, and the lifting oil cylinder 120 is connected to the adjustment sliding seat 121 by means of the lifting inner sleeve 124. The lifting inner sleeve 124 provides a guide for the lifting oil cylinder 120 to reciprocate in the vertical direction, thereby ensuring the movement accuracy of the lifting oil cylinder 120 and improving the working reliability of the lifting adjustment mechanism 116. It should also be noted that there are two groups of lifting adjustment mechanisms 116, and the two groups of lifting adjustment mechanisms 116 are respectively provided at both ends of the length direction of the transition frame 112 to ensure the convenience of position adjustment operation.

[0047] Specifically, the articulated transition unit 103 includes a first articulated frame 125 and a second articulated frame 126, the first articulated frame 125 is articulated with the second articulated frame 126, and the first articulated frame 125 and the second articulated frame 126 are both provided with a roller group 118 and a buffer bed device 117 to support the conveyor belt; the support transition unit 102 and the articulated transition unit 103 correspond to each other one by one. When multiple groups of support transition units 102 and articulated transition units 103 are provided, the first articulated frame 125 is articulated with the transition frame 112 of the previous group of support transition units 102, and the second articulated frame 126 is articulated with the transition frame 112 of the latter group of support transition units 102; the support transition unit 102 and the articulated transition unit 103 are alternately connected. In actual applications, the number of the support transition unit 102 and the articulated transition unit 103 can be selectively set according to the overall lap length and requirements to meet different excavation and transportation needs.

[0048] Among them, the first articulated frame 125 and the second articulated frame 126 both have an articulated hole 127, and the first articulated frame 125 is hingedly connected to the second articulated frame 126 via the articulated hole 127. The axis of the articulated hole 127 is parallel to the vertical direction, and the first articulated frame 125 and the second articulated frame 126 rotate around the axis of the articulated hole 127 to cooperate with the adjustment operation.

[0049] In order to improve the reliability of the articulated transition unit 103, a swing oil cylinder 128 is further provided between the first articulated frame 125 and the second articulated frame 126. The two ends of the swing oil cylinder 128 are respectively articulated to the first articulated frame 125 and the second articulated frame 126, and the articulation axis of the swing oil cylinder 128 and the first articulated frame 125 and the second articulated frame 126 is parallel to the axis of the articulation hole 127. There are two groups of swing oil cylinders 128, and the two swing oil cylinders 128 are respectively provided on both sides of the width direction of the first articulated frame 125 and the second articulated frame 126. The relative rotation of the first articulated frame 125 and the second articulated frame 126 is realized through the corresponding telescopic action of the two swing oil cylinders 128. A universal joint 129 is also provided between the first articulated frame 125 and the second articulated frame 126 to strengthen the strength of the connection structure and ensure the structural stability of the articulated transition unit 103.

[0050] More specifically, the redirecting tail frame body 106 is provided with a connecting pin hole 111, and the redirecting tail frame body 106 is hinged with the transition frame body 112 by means of the connecting pin hole 111 and the hinge pin shaft, and the axis of the connecting pin hole 111 is parallel to the horizontal direction. The redirecting tail frame body 106 is connected with the transition frame body 112 behind by means of an articulation by means of the connecting pin hole 111, so as to better adapt to the change of the slope of the roadway.

[0051] The power unit 105 includes a hydraulic system and an electric system to provide power for the tail frame unit 101, the support transition unit 102, the articulated transition unit 103 and the shoe unit 104. In other specific embodiments that can be realized by the present invention, the power unit 105 includes a pump station, an oil tank, an electric control box, etc., which serve as a power source to provide power for hydraulic components and electrical components to ensure the normal operation of the equipment.

[0052] The self-moving tail device 100 for coal mine tunnel excavation of the present invention has innovated the traditional material transportation device, meets the requirements of belt traction in tunnels over 4,000 meters, realizes multi-unit crawler traction at the tail of the belt conveyor, and realizes the follow-up continuous operation of the supporting transportation system after excavation, thereby improving the tunnel excavation efficiency by more than 10%, and completely avoids the problems of long moving time, low efficiency and poor safety of excavation and transfer equipment during excavation operations, greatly reduces the intensity of manual labor, and effectively improves the single-entry level. At the same time, based on this device, the safety of operators is guaranteed and the tense situation of mine succession is alleviated.

[0053] Embodiment 2

[0054] This embodiment provides a transportation system for coal mine tunnel excavation, including the self-moving tail device 100 for coal mine tunnel excavation of the first embodiment, to achieve follow-up continuous operation of the transportation system, thereby improving the coal mine tunnel excavation efficiency.

[0055] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A self-moving tail device for coal mine tunnel excavation, characterized in that: include: A tailstock unit, the tailstock unit comprising a redirecting tailstock body and a redirecting roller rotatably arranged on the redirecting tailstock body, the redirecting roller being capable of supporting a conveying belt and changing a running direction of the conveying belt; A support transition unit, wherein the support transition unit comprises a transition frame, wherein the transition frame is hinged to the redirecting tail frame; the support transition unit further comprises a driving crawler portion, wherein the driving crawler portion is arranged on both sides of the transition frame and can drive the support transition unit to move; An articulated transition unit, the articulated transition unit comprises a first articulated frame and a second articulated frame, the first articulated frame is articulated with the second articulated frame; the support transition unit and the articulated transition unit correspond to each other one by one, when multiple groups of the support transition units and the articulated transition units are provided, the first articulated frame is articulated with the transition frame of the previous group of the support transition units, and the second articulated frame is articulated with the transition frame of the next group of the support transition units; A sliding shoe unit, the sliding shoe unit comprising a sliding shoe frame and a guide sliding shoe arranged on the sliding shoe frame, the sliding shoe frame being hingedly connected to the second hinge frame of the last group of the hinge transition units; A power unit is arranged on the sliding shoe frame, and is used to provide operating power for the tail frame unit, the support transition unit, the articulated transition unit and the sliding shoe unit.

2. The self-moving tail device for coal mine tunnel excavation according to claim 1 is characterized in that: The transition frame, the first articulated frame, the second articulated frame and the sliding shoe frame are all provided with roller groups and buffer bed devices, and the roller groups and the buffer bed devices can support the conveyor belt and buffer the impact force on the conveyor belt.

3. The self-moving tail device for coal mine tunnel excavation according to claim 1 is characterized in that: The tail frame unit also includes a roller adjusting cylinder, a floating coal cleaner and a belt cleaner. The redirecting roller is connected to the redirecting tail frame body by the roller adjusting cylinder to adjust the relative position of the redirecting roller and the redirecting tail frame body to tension the conveying belt; along the moving direction of the conveying belt, the floating coal cleaner is arranged behind the redirecting roller to clean up spilled materials, and the belt cleaner is located in front of the redirecting roller to clean up materials on the conveying belt.

4. The self-moving tail device for coal mine tunnel excavation according to claim 1 is characterized in that: The driving track portion includes a track frame, a power element, a track sprocket and a walking track. The track frame is connected to the transition frame. The power element is arranged on the track frame, and the output end of the power element is transmission-connected to the track sprocket. The track sprocket is rotatably arranged on the track frame, and the track sprocket can tighten the walking track to drive the walking track to move.

5. The self-moving tail device for coal mine tunnel excavation according to claim 4 is characterized in that: The power element comprises a hydraulic motor and a reducer, the hydraulic motor is connected to the track sprocket by means of the reducer, and the power element is connected to the power unit to drive the power element.

6. The self-moving tail device for coal mine tunnel excavation according to claim 1, characterized in that: The supporting transition unit also includes a lifting and adjusting mechanism, which includes a lifting support seat, an adjusting sliding seat and a sliding base. The lifting support seats are in two groups and are respectively connected to both sides of the width direction of the transition frame. A lifting cylinder is arranged in the lifting support seat, and the movable end of the lifting cylinder is connected to the adjusting sliding seat. The adjusting sliding seat can be slidably arranged on the sliding base. The sliding direction of the adjusting sliding seat is parallel to the width direction of the transition frame. The adjusting sliding seat is connected to the adjusting cylinder, and the adjusting sliding seat and the adjusting cylinder correspond to the lifting support seat one by one.

7. The self-moving tail device for coal mine tunnel excavation according to claim 6 is characterized in that: The lifting support seat is also provided with a lifting inner sleeve, and the lifting oil cylinder is connected to the deviation adjustment sliding seat by means of the lifting inner sleeve; The number of the lifting and adjusting mechanisms is two groups, and the two groups of the lifting and adjusting mechanisms are respectively arranged at the two ends of the length direction of the transition frame.

8. The self-moving tail device for coal mine tunnel excavation according to claim 1, characterized in that: The first articulated frame and the second articulated frame both have an articulated hole, the first articulated frame is hingedly connected to the second articulated frame by using the articulated hole, and the axis of the articulated hole is parallel to the vertical direction; A swing cylinder is also provided between the first articulated frame and the second articulated frame, and both ends of the swing cylinder are respectively hingedly connected to the first articulated frame and the second articulated frame, and the articulation axis of the swing cylinder and the first articulated frame and the second articulated frame is parallel to the axis of the articulation hole; the number of the swing cylinders is two groups, and the two swing cylinders are respectively arranged on both sides of the width direction of the first articulated frame and the second articulated frame; a universal joint is also provided between the first articulated frame and the second articulated frame.

9. The self-moving tail device for coal mine tunnel excavation according to claim 1, characterized in that: The redirecting tail frame body is provided with a connecting pin hole, and the redirecting tail frame body is hinged with the transition frame body by means of the connecting pin hole and the hinge pin shaft, and the axis of the connecting pin hole is parallel to the horizontal direction.

10. The self-moving tail device for coal mine tunnel excavation according to claim 1, characterized in that: The power unit includes a hydraulic system and an electric system to provide power to the tail frame unit, the support transition unit, the articulated transition unit and the sliding shoe unit.

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