A pneumatic cutting machine for coal mine concrete pavement construction

Abstract

The present invention discloses a pneumatic cutting machine for coal mine concrete pavement construction, which relates to the field of coal mine concrete pavement construction. The pneumatic cutting machine comprises a box body, an air compressor is movably placed inside the box body, a front roller is rotatably connected to the bottom of the box body, two fixed plates are connected to the rear side of the two fixed plates, two crossbeams are connected to the rear sides of the two fixed plates, the upper surfaces of the two crossbeams are provided with a chute, a guide mechanism is installed inside the chute, and a vertical rod is vertically connected to the bottom of the side of the two crossbeams that are away from each other. The present invention can achieve the effect of dual-path synchronous cutting by arranging the crossbeam and the vertical rod; by arranging the guide rod and the movable ring, the effect of bidirectional cutting can be achieved by adjusting the steering of the cutting mechanism, so that when the crossbeam advances, the edges of both sides of the concrete pavement in the roadway are longitudinally cut and the pavement is transversely cut, without the need to push the cutting machine to turn and move back and forth, thereby improving the efficiency of pavement cutting.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine concrete pavement construction, in particular to a pneumatic cutting machine for coal mine concrete pavement construction. Background Art

[0002] A mine tunnel refers to an underground space excavated in the rock of a coal mine. It is mainly used to ventilate and aerate the coal mine to keep the air in the tunnel fresh. In addition, it is also used to provide electricity and mineral material transportation for the coal mine, so that transport vehicles can transport coal, slag and other materials through the tunnel. In order to ensure the safe driving of transport vehicles, it is usually necessary to construct the road surface after excavation and build a concrete pavement. During the construction of the concrete pavement, it is often necessary to cut the road surface with a cutting machine to prevent deformation and cracks in the road surface, so as to extend the service life of the road surface in the mine tunnel.

[0003] However, the existing cutting machines used for mine road pavement construction can only perform one-way, single-path cutting when working, and cannot cut the edges on both sides of the mine road pavement at the same time, nor do they have longitudinal and transverse bidirectional cutting functions. Therefore, it is often necessary to manually push the cutting machine to turn and reciprocate to complete the road pavement cutting, which has the problems of heavy manual labor burden and slow cutting efficiency. In addition, since the mine roadway is not straight, the cutting path of the cutting machine needs to be adjusted in time according to the excavated mine roadway path during the cutting process. However, the manual adjustment accuracy is not high, and it is very easy to cut crookedly. Summary of the Invention

[0004] The purpose of the present invention is to provide a pneumatic cutting machine for coal mine concrete pavement construction to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pneumatic cutting machine for coal mine concrete pavement construction, comprising a box body, an air compressor movably placed inside the box body, a front roller rotatably connected to the bottom of the box body, two fixed plates connected to the rear side of the two fixed plates, two cross beams connected to the rear sides of the two fixed plates, a slide groove is provided on the upper surface of the two cross beams, a guide mechanism is installed inside the slide groove, a vertical rod is vertically connected to the bottom of the side of the two cross beams away from each other, the bottom of the vertical rod is rotatably connected to the rear roller, a lifting groove is provided inside the vertical rod, a cutting mechanism is installed inside the lifting groove, and a driving lifting mechanism is installed inside the vertical rod above the lifting groove;

[0006] The bottoms of the two crossbeams above the two vertical rods are both provided with grooves, and the rear side walls of the crossbeams within the two grooves are both connected to guide rods, and the two guide rods are both provided with second slots on the sides close to each other, and the second slots in the two guide rods are staggered up and down, and the two guide rods are movably connected through the second slots;

[0007] The top of the vertical rod is connected to a movable ring, the inside of the movable ring is connected to a rubber ring, the top of the movable ring is inserted into the groove and sleeved on the outside of the guide rod, and the movable ring is movably connected to the guide rod.

[0008] Preferably, a first slot is provided on the side of the beam close to the fixed plate, and a mounting hole is provided inside the beam behind the first slot. A hexagonal bolt is provided through the mounting hole. The two beams are movably connected to the two fixed plates respectively through the first slot, and the hexagonal bolt passes through the fixed plate and the mounting hole in turn, and the beam is connected to the fixed plate through the hexagonal bolt.

[0009] Preferably, a long hole is opened inside the guide rod below the second slot, a countersunk bolt is set inside the long hole, and the upper surfaces of the two guide rods inside the two grooves are provided with sockets, one side of the guide rod is bent in an arc shape, and the two guide rods are connected by countersunk bolts on the sides close to each other.

[0010] Preferably, a first screw hole is penetrated through the crossbeam above the groove, a screw is penetrated inside the first screw hole, a knob is connected to the top of the screw, the outer diameter of the screw is adapted to the inner diameter of the first screw hole and the socket, the screw and the first screw hole form a threaded connection, the screw passes through the movable ring and the rubber ring in sequence and is movably connected to the guide rod through the socket.

[0011] Preferably, the guide mechanism includes a movable rod, one end of the movable rod is rotatably connected to a guide roller, the other end of the movable rod is connected to a slider, a second screw hole is provided on the front side wall of the slider, a positioning screw is threadedly connected to the inside of the second screw hole, the middle part of the movable rod is bent 120°, the longitudinal section of the slider is L-shaped, the slider is stuck in the slide groove and forms a sliding connection with the beam, and the positioning screw passes through the side wall of the beam and is connected to the slider through the second screw hole.

[0012] Preferably, the cutting mechanism includes a lifting seat movably installed inside the lifting slot, a threaded groove is opened through the middle of the lifting seat, a pneumatic motor is installed on one side of the lifting seat, and the other side of the lifting seat is connected to a fixed seat, an upper rotating shaft is installed inside the fixed seat, a lower rotating shaft is installed inside the fixed seat below the upper rotating shaft, a second transmission group is connected between the upper rotating shaft and the lower rotating shaft, a third bearing is installed between the lower rotating shaft, the upper rotating shaft and the fixed seat, one side of the lower rotating shaft extends from the side wall of the fixed seat and is connected to a cutting blade, and a protective cover is installed above the cutting blade.

[0013] Preferably, one side of the upper rotating shaft is rotatably connected to the fixed seat via a third bearing, and the other side of the upper rotating shaft passes through the lifting seat and is connected to the shaft end of the pneumatic motor. The upper rotating shaft is located in the lifting seat behind the screw rod.

[0014] Preferably, the driving lifting mechanism includes a screw rod passing through the lifting slot, a first bearing is installed between the upper and lower ends of the screw rod and the vertical rod, the side wall of the vertical rod above the screw rod is connected to a side plate, a driving shaft is installed through the middle of the side plate, a first transmission group is connected between the top of the screw rod and the driving shaft, a second bearing is installed between the driving shaft and the side plate, and a handle is connected to the top of the driving shaft.

[0015] Preferably, the upper and lower ends of the screw rod are rotatably connected to the vertical rod via a first bearing, and the screw rod passes through the lifting seat via a threaded groove and forms a threaded connection with the lifting seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This pneumatic cutting machine for coal mine concrete pavement construction is equipped with horizontal beams and vertical rods. When the box body is pushed to move on the road surface of the mine tunnel, the box body drives the fixed plate to move, and the fixed plate drives the two vertical rods to move through the horizontal beam. The bottom of the vertical rod moves via the rear roller. At the same time, the vertical rod drives the cutting mechanism installed inside to move. The upper rotating shaft is driven by the pneumatic motor to rotate. The upper rotating shaft drives the lower rotating shaft to rotate through the second transmission group. The lower rotating shaft drives the cutting blade to rotate at high speed to cut the concrete pavement on both sides of the mine tunnel, achieving the effect of dual-path synchronous cutting.

[0018] The pneumatic cutting machine for coal mine concrete pavement construction is provided with a guide rod and a movable ring. By pushing a movable ring to slide on a guide rod, the movable ring drives the vertical rod to move, and the vertical rod drives the cutting mechanism installed inside to move until the vertical rod flips along the guide rod and drives the cutting direction of the cutting blade to switch from longitudinal to transverse. The vertical rod is then pushed to move transversely along the two guide rods, so that the cutting mechanism cuts the concrete pavement transversely. The effect of two-way cutting is achieved by adjusting the steering of the cutting mechanism, so that when the crossbeam moves forward, the edges on both sides of the concrete pavement in the tunnel are cut longitudinally and the pavement is cut transversely. There is no need to push the cutting machine to turn or move back and forth, thereby improving the efficiency of pavement cutting.

[0019] The pneumatic cutting machine for coal mine concrete pavement construction is provided with a first slot and a second slot. By pushing the two beams to move left and right, the depth of the fixed plate inserted into the first slot is adjusted, and hexagonal bolts are used to penetrate the fixed plate and the mounting holes to connect the beams to the fixed plate, and the width covered by the two beams is adjusted. By pushing the two guide rods to move left and right, the insertion depth of the second slots in the two guide rods is adjusted, and the two guide rods are connected by countersunk bolts to adjust the width covered by the two guide rods. The cutting machine can be adjusted to the width of the concrete pavement of the mine tunnel of different widths, thereby increasing the flexibility of the use of the cutting machine.

[0020] This pneumatic cutting machine for coal mine concrete pavement construction is equipped with a guide mechanism. A movable rod pushes the slider to move in the slide groove, so that the movable rod drives the guide roller to move until the guide roller contacts the inner wall of the mine tunnel. The two guide rollers are used to support the crossbeam to keep the box body and the concrete pavement aligned in the center, so that the cutting machine always moves along the path constructed in the mine tunnel. The movable rod and guide roller guidance replaces the trouble of manually adjusting the cutting path. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of a top view of a partially cutaway structure of the present invention;

[0024] Figure 4 It is a schematic diagram of a partially cutaway side structure of the present invention;

[0025] Figure 5 This is a schematic structural diagram of the cutting mechanism of the present invention in a turning state;

[0026] Figure 6 This is a schematic diagram of the front cross-section structure of the cutting mechanism of the present invention;

[0027] Figure 7 For the present invention Figure 4 Enlarged schematic diagram of the structure of part A in the middle.

[0028] Figure: 1. Box; 2. Air compressor; 3. Front roller; 4. Fixing plate; 5. Crossbeam; 51. First slot; 52. Mounting hole; 53. Slide; 54. Groove; 55. First screw hole; 56. Screw; 57. Knob; 6. Hexagonal bolt; 7. Guide mechanism; 71. Movable rod; 72. Guide roller; 73. Slider; 74. Second screw hole; 75. Positioning screw; 8. Guide rod; 81. Second slot; 82. Long hole; 83. Countersunk bolt; 84. Socket; 9. Vertical rod; 91. Rear roller; 92 , lifting slot; 93, movable ring; 94, rubber ring; 10, driving lifting mechanism; 101, screw rod; 102, first bearing; 103, first transmission group; 104, driving shaft; 105, second bearing; 106, handle; 107, side panel; 11, cutting mechanism; 111, lifting seat; 112, threaded groove; 113, pneumatic motor; 114, fixed seat; 115, upper shaft; 116, second transmission group; 117, lower shaft; 118, third bearing; 119, cutting blade; 1110, protective cover. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] like Figures 1 to 7 As shown, the pneumatic cutting machine for coal mine concrete pavement construction in this embodiment includes a box body 1, an air compressor 2 is movably placed inside the box body 1, and pipes are connected between the air compressor 2 and two pneumatic motors 113 for supplying compressed air to the pneumatic motors 113. A front roller 3 is rotatably connected to the bottom of the box body 1, and a box door is installed on the front side of the box body 1 to facilitate maintenance of the air compressor 2. Two fixed plates 4 are connected to the rear side of the two fixed plates 4. Two beams 5 are connected to the rear sides of the two fixed plates 4. The upper surfaces of the two beams 5 are both provided with slide grooves 53. A guide mechanism 7 is installed inside the slide grooves 53 for guiding the movement of the cutting machine. A vertical rod 9 is vertically connected to the bottom of the side where the two cross beams 5 are away from each other to support the cross beam 5 and ensure that the cutting machine can be stably placed on the road surface. Push rods are installed on the two vertical rods 9 and the front side wall of the box body 1 to push or pull the box body 1 to move longitudinally and push or pull the vertical rod 9 after turning to move horizontally. The bottom of the vertical rod 9 is rotatably connected to a rear roller 91. A lifting groove 92 is opened inside the vertical rod 9. A cutting mechanism 11 is installed inside the lifting groove 92 for cutting the concrete road surface. A driving lifting mechanism 10 is installed inside the vertical rod 9 above the lifting groove 92 to drive the cutting mechanism 11 to move up and down;

[0033] The bottoms of the two crossbeams 5 above the two vertical rods 9 are both provided with grooves 54. The rear side walls of the crossbeams 5 inside the two grooves 54 are both connected with guide rods 8 for guiding the cutting mechanism 11 when it moves horizontally. The guide rods 8 are welded and fixed to the rear side walls of the crossbeam 5 inside the grooves 54. A second slot 81 is provided on the side where the two guide rods 8 are close to each other, and the second slots 81 in the two guide rods 8 are staggered up and down. The second slot 81 in one guide rod 8 is provided on the upper surface, while the second slot 81 in the other guide rod 8 is provided on the lower surface. The two guide rods 8 are movably connected through the second slots 81, which facilitates adjustment of the spacing between the two guide rods 8.

[0034] The top of the vertical rod 9 is connected to a movable ring 93, and the inside of the movable ring 93 is connected to a rubber ring 94. The rubber ring 94 contacts the guide rod 8 on the inner wall of the movable ring 93, and the inner diameter of the rubber ring 94 is larger than the outer diameter of the guide rod 8. The rubber ring 94 will not hinder the movement of the movable ring 93. The top of the movable ring 93 is inserted into the groove 54 and is sleeved on the outside of the guide rod 8. The outer wall of the movable ring 93 does not contact the inner wall of the groove 54. The width of the inner wall of the groove 54 must meet the requirements of the movable ring 93 for turning and moving on the guide rod 8, and when the movable ring 93 moves at the bend of the guide rod 8, the guide rod 8 squeezes the rubber ring 94 and deforms it. The movable ring 93 is movably connected to the guide rod 8, and slides on the guide rod 8 through the movable ring 93. The movable ring 93 drives the vertical rod 9 to move, and the vertical rod 9 drives the cutting mechanism 11 installed inside to move.

[0035] Specifically, a first slot 51 is provided on the side of the beam 5 close to the fixed plate 4, and a mounting hole 52 is provided inside the beam 5 on the rear side of the first slot 51. The mounting hole 52 is in the shape of an elongated strip, which is used to adapt the beam 5 to be bolted to the fixed plate 4 at different left and right positions. A hexagonal bolt 6 is provided inside the mounting hole 52. The two beams 5 are movably connected to the two fixed plates 4 respectively through the first slot 51. By pushing the two beams 5 to move left and right, the depth of the fixed plate 4 inserted into the first slot 51 is adjusted, and the width covered by the two beams 5 is adjusted. The hexagonal bolt 6 penetrates the fixed plate 4 and the mounting hole 52 in turn, and the beam 5 is connected to the fixed plate 4 through the hexagonal bolt 6. The hexagonal bolt 6 penetrates the fixed plate 4 and the mounting hole 52 to connect the beam 5 to the fixed plate 4, so that the cutting machine can be adjusted to the width according to the concrete pavement of the mine tunnel of different widths, thereby increasing the flexibility of the use of the cutting machine.

[0036] Furthermore, a long hole 82 is provided inside the guide rod 8 below a second slot 81, and a countersunk bolt 83 is provided inside the long hole 82. The countersunk bolt 83 avoids obstruction to the movable ring 93 moving on the guide rod 8. The upper surfaces of the two guide rods 8 inside the two grooves 54 are both provided with a socket 84. One side of the guide rod 8 is bent in an arc shape, and the two guide rods 8 are connected by a countersunk bolt 83 on the sides close to each other. When the beam 5 moves left and right, it drives the two guide rods 8 to move left and right, and the two guide rods 8 are connected by the countersunk bolt 83 passing through the long hole 82.

[0037] Furthermore, a first screw hole 55 is formed through the crossbeam 5 above the groove 54, and a screw 56 is provided through the inside of the first screw hole 55. A knob 57 is connected to the top of the screw 56. The outer diameter of the screw 56 is adapted to the inner diameter of the first screw hole 55 and the insertion hole 84. The screw 56 forms a threaded connection with the first screw hole 55. The screw 56 passes through the movable ring 93 and the rubber ring 94 in sequence and is movably connected to the guide rod 8 through the insertion hole 84. The screw 56 is driven to rotate by the knob 57, and the screw 56 rotates and moves downward in the first screw hole 55. The screw 56 passes through the movable ring 93 and the rubber ring 94 and is inserted into the insertion hole 84 to position the movable ring 93 on the guide rod 8. Only when the cutting mechanism 11 is used for horizontal cutting, the knob 57 is rotated in the opposite direction to cancel the positioning effect of the screw 56 on the movable ring 93.

[0038] The second end of the guide rod 73 is fixed to the left side of the sliding rod 73, and the second end of the guide rod 73 is fixed to the left side of the sliding rod 73 so as to adjust the width of the inner wall of the mine roadway of different widths.

[0039] Furthermore, the cutting mechanism 11 includes a lifting seat 111 movably mounted inside the lifting slot 92, a threaded groove 112 is opened through the middle of the lifting seat 111, a pneumatic motor 113 is installed on one side of the lifting seat 111, and a fixed seat 114 is connected to the other side of the lifting seat 111, an upper rotating shaft 115 is installed inside the fixed seat 114, and a lower rotating shaft 117 is installed inside the fixed seat 114 below the upper rotating shaft 115, and a second transmission group 116 is connected between the upper rotating shaft 115 and the lower rotating shaft 117. 7. A third bearing 118 is installed between the upper rotating shaft 115 and the fixed seat 114. One side of the lower rotating shaft 117 extends from the side wall of the fixed seat 114 and is connected to a cutting blade 119. A protective cover 1110 is installed above the cutting blade 119 to protect the cutting blade 119 from rotation. The upper rotating shaft 115 is driven to rotate by the pneumatic motor 113, and the upper rotating shaft 115 drives the lower rotating shaft 117 to rotate through the second transmission group 116. The lower rotating shaft 117 drives the cutting blade 119 to rotate at high speed to cut the concrete pavement of the mine tunnel.

[0040] Furthermore, one side of the upper rotating shaft 115 is rotatably connected to the fixed base 114 via the third bearing 118, and the other side of the upper rotating shaft 115 passes through the lifting base 111 and is connected to the shaft end of the pneumatic motor 113. The upper rotating shaft 115 is located in the lifting base 111 behind the screw rod 101, and the upper rotating shaft 115 does not cause any obstruction to the screw rod 101 inside the lifting base 111.

[0041] Furthermore, the driving lifting mechanism 10 includes a screw rod 101 that passes through the lifting slot 92, and a first bearing 102 is installed between the upper and lower ends of the screw rod 101 and the vertical rod 9. The side wall of the vertical rod 9 above the screw rod 101 is connected to a side plate 107, and a driving shaft 104 is installed through the middle of the side plate 107. A first transmission group 103 is connected between the top of the screw rod 101 and the driving shaft 104. The first transmission group 103 and the second transmission group 116 are composed of two transmission wheels and a transmission belt, and the two transmission wheels are connected to each other. A rotational connection is formed between the drive shaft 104 and the side plate 107 through a transmission belt. A second bearing 105 is installed between the drive shaft 104 and the side plate 107. A handle 106 is connected to the top of the drive shaft 104. By rotating the handle 106, the handle 106 drives the drive shaft 104 to rotate. The drive shaft 104 drives the screw rod 101 to rotate through the first transmission group 103. The screw rod 101 drives the lifting seat 111 to move downward in the lifting slot 92 through the threaded groove 112. The lifting seat 111 drives the cutting mechanism 11 to move downward, so that the cutting blade 119 is inserted into the road surface for cutting.

[0042] Furthermore, the upper and lower ends of the screw rod 101 are rotatably connected to the vertical rod 9 through the first bearing 102, and the screw rod 101 passes through the lifting seat 111 through the thread groove 112 and forms a threaded connection with the lifting seat 111. The screw rod 101 drives the lifting seat 111 to rise and fall, and the lifting seat 111 drives the cutting mechanism 11 to rise and fall.

[0043] The method of using this embodiment is as follows: when the user actually uses the cutting machine to cut the concrete pavement built in the mine tunnel, the user first places the cutting machine on the concrete pavement, and the cutting machine is supported by the front roller 3 at the bottom of the box body 1 and the two rear rollers 91 at the bottom of the two vertical rods 9. Then, the width of the crossbeam 5 and the guide rod 8 is adjusted according to the actual width of the concrete pavement, the two crossbeams 5 are pushed to move left and right, and the depth of the fixing plate 4 inserted into the first slot 51 is adjusted. The crossbeam 5 drives the vertical rod 9 to move, and the vertical rod 9 drives the cutting mechanism 11 to move left and right until the cutting mechanism 11 is just at the edge of the pavement to be cut, and the crossbeam 5 moves left and right while driving the two guide rods 8 to move left and right. Then use the hexagonal bolt 6 to pass through the fixing plate 4 and the mounting hole 52, install the crossbeam 5 on the rear side of the fixing plate 4, and use the countersunk bolt 83 to pass through the long hole 82 to connect the two guide rods 8. Then, push the slider 73 to move in the slide groove 53 through the movable rod 71, so that the movable rod 71 drives the guide roller 72 to move until the two guide rollers 72 respectively contact the inner walls of the two sides of the mine roadway. The crossbeam 5 is supported by the two guide rollers 72 to keep the box 1 aligned with the concrete pavement, which is convenient for the subsequent movement of the cutting machine along the path built in the mine roadway. Then, use the positioning screw 75 to pass through the side wall of the crossbeam 5 and insert it into the second screw hole 74 to connect it to the slider 73, and adjust the position of the slider 73 in the slide groove 53. Positioning, then start the air compressor 2, the air compressor 2 passes compressed air into the pneumatic motor 113, the pneumatic motor 113 converts the compressed air into mechanical energy to drive the upper shaft 115 to rotate, the upper shaft 115 drives the lower shaft 117 to rotate through the second transmission group 116, and the lower shaft 117 drives the cutting blade 119 to rotate at high speed, then the user rotates the handle 106, the handle 106 drives the drive shaft 104 to rotate, the drive shaft 104 drives the screw rod 101 to rotate through the first transmission group 103, the screw rod 101 drives the lifting seat 111 to move downward in the lifting slot 92 through the thread groove 112, the lifting seat 111 drives the cutting mechanism 11 to move downward, the cutting blade 119 is inserted into the road surface, and then the box body 1 is pushed to move on the road surface, so that the cutting The cutting blade 119 performs dual-path longitudinal cutting on the concrete pavement. When cutting the concrete pavement horizontally, one handle 106 is rotated in the opposite direction to move the cutting blade 119 on one side upward, and then the screw rod 56 is rotated through the knob 57 to rotate and move upward through the first screw hole 55, canceling the plug-in effect with the movable ring 93 and the guide rod 8, and then the movable ring 93 is pushed to slide on the guide rod 8, and the movable ring 93 drives the vertical rod 9 to move, and the vertical rod 9 drives the cutting blade 119 to move until the cutting direction of the cutting blade 119 is switched from longitudinal to transverse, and then the handle 106 is rotated again to insert the cutting blade 119 into the pavement, and then the vertical rod 9 is pushed to move horizontally along the two guide rods 8 to cut the concrete pavement horizontally.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalent features for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pneumatic cutting machine for coal mine concrete pavement construction, comprising a box (1), characterized in that: An air compressor (2) is movably placed inside the box (1), a front roller (3) is rotatably connected to the bottom of the box (1), two fixed plates (4) are connected to the rear side wall of the box (1), two beams (5) are connected to the rear sides of the two fixed plates (4), a slide groove (53) is provided on the upper surface of the two beams (5), a guide mechanism (7) is installed inside the slide groove (53), a vertical rod (9) is vertically connected to the bottom of the side of the two beams (5) away from each other, the bottom of the vertical rod (9) is rotatably connected to the rear roller (91), a lifting groove (92) is provided inside the vertical rod (9), a cutting mechanism (11) is installed inside the lifting groove (92), and a driving lifting mechanism (10) is installed inside the vertical rod (9) above the lifting groove (92); The bottoms of the two cross beams (5) above the two vertical rods (9) are both provided with grooves (54), the rear side walls of the cross beams (5) inside the two grooves (54) are both connected with guide rods (8), and the two guide rods (8) are both provided with second slots (81) on the sides close to each other, and the second slots (81) in the two guide rods (8) are staggered up and down, and the two guide rods (8) are movably connected through the second slots (81); The top of the vertical rod (9) is connected to a movable ring (93), the inside of the movable ring (93) is connected to a rubber ring (94), the top of the movable ring (93) is inserted into the inside of the groove (54) and is sleeved on the outside of the guide rod (8), and the movable ring (93) is movably connected to the guide rod (8); The guide mechanism (7) includes a movable rod (71), one end of the movable rod (71) is rotatably connected to a guide roller (72), the other end of the movable rod (71) is connected to a slider (73), a second screw hole (74) is provided on the front side wall of the slider (73), a positioning screw (75) is threadedly connected inside the second screw hole (74), the middle part of the movable rod (71) is bent 120 degrees, the longitudinal section of the slider (73) is L-shaped, the slider (73) is stuck in the inside of the slide groove (53) and forms a sliding connection with the cross beam (5), and the positioning screw (75) passes through the side wall of the cross beam (5) and is connected to the slider (73) through the second screw hole (74).

2. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 1, characterized in that: A first slot (51) is provided on one side of the crossbeam (5) close to the fixed plate (4), a mounting hole (52) is provided inside the crossbeam (5) behind the first slot (51), a hexagonal bolt (6) is provided through the mounting hole (52), the two crossbeams (5) are movably connected to the two fixed plates (4) respectively through the first slot (51), the hexagonal bolt (6) passes through the fixed plate (4) and the mounting hole (52) in sequence, and the crossbeam (5) is connected to the fixed plate (4) through the hexagonal bolt (6).

3. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 1, characterized in that: A long hole (82) is provided inside the guide rod (8) below the second slot (81), and a countersunk bolt (83) is provided inside the long hole (82). The upper surfaces of the two guide rods (8) inside the two grooves (54) are both provided with insertion holes (84). One side of the guide rod (8) is bent in an arc shape, and the two guide rods (8) are connected to each other by a countersunk bolt (83) on their sides.

4. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 3, characterized in that: A first screw hole (55) is provided through the crossbeam (5) above the groove (54), a screw rod (56) is provided through the inside of the first screw hole (55), a knob (57) is connected to the top of the screw rod (56), the outer diameter of the screw rod (56) is adapted to the inner diameter of the first screw hole (55) and the jack (84), the screw rod (56) and the first screw hole (55) are threadedly connected, the screw rod (56) sequentially passes through the movable ring (93), the rubber ring (94), and is movably connected to the guide rod (8) through the jack (84).

5. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 1, characterized in that: The cutting mechanism (11) includes a lifting seat (111) movably mounted inside the lifting slot (92), a threaded groove (112) extending through the middle of the lifting seat (111), a pneumatic motor (113) mounted on one side of the lifting seat (111), and a fixed seat (114) connected to the other side of the lifting seat (111), an upper rotating shaft (115) mounted inside the fixed seat (114), and a fixed seat (114) below the upper rotating shaft (115) A lower rotating shaft (117) is installed inside, a second transmission group (116) is connected between the upper rotating shaft (115) and the lower rotating shaft (117), a third bearing (118) is installed between the lower rotating shaft (117), the upper rotating shaft (115) and the fixed seat (114), one side of the lower rotating shaft (117) extends from the side wall of the fixed seat (114) and is connected to a cutting blade (119), and a protective cover (1110) is installed above the cutting blade (119).

6. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 5, characterized in that: One side of the upper rotating shaft (115) is rotatably connected to the fixed seat (114) via the third bearing (118), and the other side of the upper rotating shaft (115) passes through the lifting seat (111) and is connected to the shaft end of the pneumatic motor (113). The upper rotating shaft (115) is located in the lifting seat (111) on the rear side of the screw rod (101).

7. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 1, characterized in that: The driving lifting mechanism (10) includes a screw rod (101) passing through the lifting slot (92), a first bearing (102) is installed between the upper and lower ends of the screw rod (101) and the vertical rod (9), a side plate (107) is connected to the side wall of the vertical rod (9) above the screw rod (101), a driving shaft (104) is installed through the middle of the side plate (107), a first transmission group (103) is connected between the top of the screw rod (101) and the driving shaft (104), a second bearing (105) is installed between the driving shaft (104) and the side plate (107), and a handle (106) is connected to the top of the driving shaft (104).

8. The pneumatic cutting machine for coal mine concrete pavement construction according to claim 7, characterized in that: The upper and lower ends of the screw rod (101) are rotatably connected to the vertical rod (9) via the first bearing (102), and the screw rod (101) passes through the lifting seat (111) via the thread groove (112) and forms a threaded connection with the lifting seat (111).

Images