Stone crushing device for mine construction

Abstract

The invention relates to the technical field of ore crushing, in particular to a stone crushing device for mine construction, which comprises a box body, racks, crushing rollers, a driving motor and the like, the racks are connected to the left and right sides of the box body, the crushing rollers are rotatably connected to the left and right sides in the box body, the two crushing rollers are in transmission through a straight gear, and the driving motor is mounted on the box body. An output shaft of the driving motor is connected with the crushing roller on the left side. According to the ore crushing device, ore can be crushed through the crushing roller, the crushed ore can fall onto the conveyor, the conveyor and the conveying plate can discharge the crushed ore, the output shaft of the double-shaft motor can drive the moving wheel to rotate and drive the box body to move, and during the period, the crushing roller continues to crush the ore; and the crushed ores can be stored in the box body, shutdown is not needed, moving and crushing can be carried out at the same time, and therefore crushing operation can be continuously carried out, and the working efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of ore crushing, and particularly relates to a gravel device for mine construction. Background Art

[0002] In the fields of mine resource development and mineral processing, ore crushing technology is a key link to achieve raw material grading and improve beneficiation efficiency. The current mainstream ore crushing process uses a roll crusher, and its core principle is to apply pressure and shear force to the ore through a pair or several pairs of relatively rotating crushing rolls to crush the ore to the target particle size range.

[0003] In the open-pit mine multi-point mining scenario, gravel equipment (such as mobile crushing stations) needs to be frequently moved to adapt to the changes in the stope. Currently, it is generally moved by tire-type equipment or crawler-type equipment. However, the equipment chassis and the crushing mainframe are rigidly connected, and when moving, it is necessary to completely stop feeding and shut down the machine to ensure equipment safety. The single movement takes a long time, and movement and crushing cannot be carried out simultaneously, so continuous crushing operations cannot be carried out, and the working efficiency drops severely. Summary of the Invention

[0004] In view of this, the present invention provides a gravel device for mine construction, which can overcome the disadvantages that the equipment chassis and the crushing mainframe are rigidly connected, and when moving, it is necessary to completely stop feeding and shut down the machine to ensure equipment safety, the single movement takes a long time, movement and crushing cannot be carried out simultaneously, continuous crushing operations cannot be carried out, and the working efficiency drops severely.

[0005] A gravel device for mine construction includes a box body, a frame, crushing rolls, a driving motor, guide rods, sliding sleeves, baffles, a moving mechanism, and a discharging mechanism. The frame is connected to both the left and right sides of the box body. The crushing rolls are rotatably connected to both the left and right sides inside the box body. The two crushing rolls are driven by spur gears. A driving motor is installed on the box body, and the output shaft of the driving motor is connected to the left crushing roll to drive the crushing roll to rotate and crush the ore. Guide rods are connected to the box body, and sliding sleeves are slidably connected to the guide rods. Baffles are connected to the sliding sleeves, and the baffles slide through the box body. The baffles are used to seal the bottom of the box body so that the crushed ore in the box body cannot be discharged. The moving mechanism is used to control the movement of the box body, and the discharging mechanism is used to discharge the crushed ore.

[0006] Optionally, the moving mechanism includes a fixed frame, moving wheels, a biaxial motor, a rotating ring, balls, a rotating frame, a stepping motor, a wheel shaft, and steering wheels. A fixed frame is connected to the bottom of the right-side frame. Moving wheels are rotatably connected to both the front and rear sides of the fixed frame. A biaxial motor is installed at the bottom of the fixed frame. The output shafts of the biaxial motor are connected to the moving wheels to drive the moving wheels to rotate and control the movement of the box body. A rotating ring is rotatably connected to the bottom of the left-side frame. Balls are evenly spaced circumferentially on the top of the rotating ring. The balls are in contact with the bottom of the left-side frame. The bottom of the rotating ring is connected to a rotating frame. A stepping motor is installed on the left-side frame. The output shaft of the stepping motor is connected to the top of the rotating frame. The lower part of the rotating frame is rotatably connected to a wheel shaft. Steering wheels are connected to both the front and rear ends of the wheel shaft.

[0007] Optionally, the discharging mechanism includes a mounting frame, supporting wheels, mounting plates, a conveyor, and conveying plates. Mounting frames are connected to both the front and rear sides of the right-side frame. Supporting wheels are rotatably connected to the bottoms of the mounting frames. Mounting plates are connected to the mounting frames. A conveyor is installed between the two mounting plates. Conveying plates are evenly spaced and connected to the conveyor. The crushed ore in the box body will fall onto the conveyor. The conveyor and the conveying plates convey the crushed ore to the right to discharge the crushed ore.

[0008] Optionally, a stabilizing mechanism is further included. The stabilizing mechanism includes a guiding frame, a sliding plate, a lead screw motor, a sliding frame, a contact plate, and a first spring. Guiding frames are connected to the frames. Sliding plates are slidably connected to the guiding frames. Lead screw motors are installed on the guiding frames. The lead screws of the lead screw motors are threadedly connected to the sliding plates. Sliding frames are slidably connected to the sliding plates. Contact plates are connected to the bottoms of the sliding frames. A first spring is connected between the sliding plates and the sliding frames.

[0009] Optionally, a strengthening mechanism is further included. The strengthening mechanism includes a mounting box, a pressing plate, a servo motor, a spiral plug, and a gear box. Mounting boxes are connected to the sliding plates. Pressing plates are connected to the bottoms of the mounting boxes. Servo motors are installed in the mounting boxes. Spiral plugs are rotatably connected to both the front and rear sides of the bottoms of the mounting boxes. Two through holes for the spiral plugs to pass through are formed on the contact plates. Gear boxes are installed in the mounting boxes. The gear box has an input shaft and two output shafts. The output shaft of the servo motor is connected to the input shaft of the gear box. The output shaft of the input shaft is connected to the upper end of the spiral plug.

[0010] Optionally, a pulling mechanism is further included. The pulling mechanism includes a second spring, a pulling rope, a vertical plate, a rotating shaft, and a wire guiding wheel. A second spring is connected between the guide rod and the baffle. A pulling rope is connected between the baffle and the left-side sliding plate. A vertical plate is connected to the top of the left-side guiding frame. A rotating shaft is rotatably connected to the vertical plate. A wire guiding wheel for guiding the pulling rope is connected to the rotating shaft. The pulling rope bypasses the wire guiding wheel.

[0011] Optionally, it further includes a support mechanism, which includes an arc-shaped plate and steel balls. Arc-shaped plates are connected to the front and rear sides of the top of the rotating frame. The arc-shaped plates are slidably connected to the left frame. Steel balls for supporting the left frame are rotatably connected to the top of the arc-shaped plates at equal intervals. The steel balls are in contact with the bottom of the left frame.

[0012] Optionally, it further includes an aggregation box, and the aggregation box is connected to the bottom of the box body.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The present invention can crush ores through the crushing roller. The crushed ores will fall onto the conveyor, and the conveyor and the conveying plate can discharge the crushed ores. The output shaft of the double-shaft motor can drive the moving wheels to rotate, driving the box body to move. During this period, the crushing roller continues to crush the ores, and the crushed ores will be stored in the box body without the need to stop the machine. Moving and crushing can be carried out simultaneously, so as to continuously carry out the crushing operation and ensure the working efficiency.

[0014] 2. The screw motor can drive the contact plate to move downward, making the contact plate contact the ground. The first spring is compressed. The compressed first spring can squeeze the contact plate downward, making the contact between the contact plate and the ground closer, so as to increase the resistance of the device during movement and improve the stability of the device.

[0015] 3. The sliding plate can drive the spiral plug rod to move downward, and the spiral plug rod will be inserted into the soil, preventing the device from moving on the ground with gravel and being loose, further improving the stability of the device. The output shaft of the servo motor can drive the spiral plug rod to rotate, reducing the friction between the spiral plug rod and the soil, so that the spiral plug rod can be better inserted into the soil. Description of the Drawings

[0016] Figure 1 Shows the three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 Shows the three-dimensional structural schematic diagram of the guide rod, sliding sleeve, baffle and aggregation box of the present invention.

[0018] Figure 3 Shows the cross-sectional view of the box body of the present invention.

[0019] Figure 4 Shows the three-dimensional structural schematic diagram of the moving mechanism of the present invention.

[0020] Figure 5 Shows the three-dimensional structural schematic diagram of the rotating ring, ball, rotating frame and stepping motor of the present invention.

[0021] Figure 6 Shows the first three-dimensional structural schematic diagram of the stability mechanism of the present invention.

[0022] Figure 7 Shows the second three-dimensional structural schematic diagram of the stabilizing mechanism of the present invention.

[0023] Figure 8 Shows the three-dimensional structural schematic diagram of the strengthening mechanism of the present invention.

[0024] Figure 9 Shows the cross-sectional view of the installation box of the present invention.

[0025] Figure 10 Shows the three-dimensional structural schematic diagram of the pulling mechanism of the present invention.

[0026] Figure 11 Shows the three-dimensional structural schematic diagram of the second spring of the present invention.

[0027] Figure 12 Shows the three-dimensional structural schematic diagram of the arc plate of the present invention.

[0028] Figure 13 Shows the three-dimensional structural schematic diagram of the arc plate and steel balls of the present invention.

[0029] Reference signs in the drawings: 1, box body; 2, frame; 3, crushing roller; 4, drive motor; 5, guide rod; 6, sliding sleeve; 7, baffle; 81, fixed frame; 82, moving wheel; 83, biaxial motor; 84, rotating ring; 85, ball; 86, rotating frame; 87, stepping motor; 88, wheel shaft; 89, steering wheel; 91, mounting frame; 92, supporting wheel; 93, mounting plate; 94, conveyor; 95, conveying plate; 101, guiding frame; 102, sliding plate; 103, lead screw motor; 104, sliding frame; 105, contact plate; 106, first spring; 111, installation box; 112, pressing plate; 113, servo motor; 114, spiral plug; 115, gear box; 121, second spring; 122, pulling rope; 123, vertical plate; 124, rotating shaft; 125, wire guiding wheel; 131, arc plate; 132, steel ball; 14, aggregation box. Detailed implementation manners

[0030] To make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0031] Refer to Figures 1 - 5, A gravel device for mine construction, comprising a box body 1, a frame 2, a crushing roller 3, a driving motor 4, a guide rod 5, a sliding sleeve 6, a baffle 7, a moving mechanism and a discharging mechanism. Both the left and right sides of the box body 1 are bolted to the frame 2. The box body 1 is supported by the two frames 2, which can prevent the box body 1 from tilting. Both the left and right sides in the middle of the box body 1 are rotatably connected with a crushing roller 3. The two crushing rollers 3 are driven by spur gears. The left rear part of the box body 1 is bolted with a driving motor 4. The output shaft of the driving motor 4 is connected to the rear end of the left crushing roller 3 through a coupling. Both the front and rear sides of the lower part of the box body 1 are connected with a guide rod 5. A sliding sleeve 6 is slidably connected to each guide rod 5. The left ends of the two sliding sleeves 6 are jointly connected with a baffle 7. The baffle 7 slidably penetrates through the lower left side of the box body 1. The moving mechanism is used to control the movement of the box body 1, and the discharging mechanism is used to discharge the crushed ore.

[0032] Refer to Figure 4 and Figure 5 , The moving mechanism includes a fixed frame 81, moving wheels 82, a double-shaft motor 83, a rotating ring 84, rolling balls 85, a rotating frame 86, a stepping motor 87, a wheel axle 88 and steering wheels 89. The bottom of the right frame 2 is bolted with a fixed frame 81. Moving wheels 82 are rotatably connected to both the front and rear sides of the fixed frame 81. A double-shaft motor 83 is bolted to the middle of the bottom of the fixed frame 81. The output shaft of the double-shaft motor 83 is connected to the moving wheels 82. The bottom of the left frame 2 is rotatably connected with a rotating ring 84. Rolling balls 85 are evenly spaced circumferentially on the top of the rotating ring 84. The rolling balls 85 are in contact with the bottom of the left frame 2. The rolling balls 85 can reduce the friction between the left frame 2 and the rotating ring 84 and prevent the left frame 2 and the rotating ring 84 from being worn. The bottom of the rotating ring 84 is connected with a rotating frame 86. A stepping motor 87 is bolted to the lower part of the left frame 2. The output shaft of the stepping motor 87 is connected to the top of the rotating frame 86. A wheel axle 88 is rotatably connected to the lower part of the rotating frame 86. Steering wheels 89 are connected to both the front and rear ends of the wheel axle 88.

[0033] Refer to Figure 1 , The discharging mechanism includes a mounting frame 91, supporting wheels 92, a mounting plate 93, a conveyor 94 and a conveying plate 95. Mounting frames 91 are bolted to both the front and rear sides of the right frame 2. Supporting wheels 92 are rotatably connected to the right side of the bottom of each mounting frame 91. Mounting plates 93 are bolted to the side of the two mounting frames 91 close to each other. A conveyor 94 is bolted between the two mounting plates 93. Conveying plates 95 are evenly spaced and connected to the conveyor 94.

[0034] The staff starts the drive motor 4. The output shaft of the drive motor 4 drives the left crushing roller 3 to rotate. The left crushing roller 3 drives the right crushing roller 3 to rotate through spur gears. The two crushing rollers 3 rotate towards each other. Then, the baffle 7 is pulled to the left to open the bottom of the box body 1, and then the ore is poured into the box body 1. The crushing rollers 3 can crush the ore. The crushed ore is discharged from the box body 1 and falls onto the conveyor 94. The conveyor 94 and the conveying plate 95 convey the crushed ore to the right and discharge the crushed ore. The crushed ore will fall to the right side of the mounting frame 91. When the right side of the mounting frame 91 is filled with the crushed ore, the staff pushes the baffle 7 to the right to seal the bottom of the box body 1, so that the crushed ore cannot be discharged. Then, the double-shaft motor 83 is started. The output shaft of the double-shaft motor 83 drives the moving wheel 82 to rotate, driving the box body 1 to move. During this period, the crushing rollers 3 continue to crush the ore, and the crushed ore will be stored in the box body 1 without stopping the machine. The movement and crushing can be carried out simultaneously, so that the crushing operation can be carried out continuously, ensuring the work efficiency. The output shaft of the stepping motor 87 can drive the rotating frame 86 to rotate, and the rotating frame 86 drives the steering wheel 89 to rotate to control the box body 1 to turn, so as to move the box body 1 to the designated position. After the box body 1 moves to the designated position, the double-shaft motor 83 is turned off, and then the baffle 7 is pulled to the left to open the bottom of the box body 1 to continue discharging the material.

[0035] Refer to Figure 6 and Figure 7 It also includes a stabilizing mechanism. The stabilizing mechanism includes a guide frame 101, a sliding plate 102, a lead screw motor 103, a sliding frame 104, a contact plate 105 and a first spring 106. Guide frames 101 are bolted to the mutually remote sides of the two frame bodies 2. Sliding plates 102 are slidably connected to the mutually remote sides of the two guide frames 101. Lead screw motors 103 are installed on the guide frames 101. The lead screws of the lead screw motors 103 are threadedly connected to the sliding plates 102. Sliding frames 104 are slidably connected to the mutually remote sides of the two sliding plates 102. Contact plates 105 are bolted to the bottoms of the sliding frames 104. The first springs 106 are sleeved on the front and rear parts of the sliding frames 104. The two ends of the first springs 106 are respectively connected to the sliding plates 102 and the sliding frames 104. The first springs 106 are sleeved on the sliding frames 104, which can prevent the first springs 106 from bending.

[0036] After the box body 1 is moved to the specified position, the staff controls the lead screw motor 103 to drive the sliding plate 102 to move downward. The sliding plate 102 drives the sliding frame 104 to move downward through the first spring 106. The sliding frame 104 drives the contact plate 105 to move downward. When the contact plate 105 moves downward and contacts the ground, the contact plate 105 and the sliding frame 104 stop moving downward. The lead screw motor 103 continues to operate, the sliding plate 102 continues to move downward, and the first spring 106 is compressed. The compressed first spring 106 can squeeze the contact plate 105 downward, making the contact between the contact plate 105 and the ground tighter, so as to increase the resistance of the device during movement and improve the stability of the device.

[0037] Refer to Figure 8 and Figure 9 It also includes a reinforcement mechanism. The reinforcement mechanism includes an installation box 111, a pressing plate 112, a servo motor 113, a spiral plug 114, and a gear box 115. Installation boxes 111 are bolted to the mutually remote sides of the two sliding plates 102. Pressing plates 112 are bolted to the middle of the bottoms of the installation boxes 111. Servo motors 113 are bolted to the front sides of the inner tops of the installation boxes 111. Spiral plugs 114 are rotatably connected to the front and rear sides of the bottoms of the installation boxes 111. Two through holes for the spiral plugs 114 to pass through are formed in the contact plates 105. Gear boxes 115 are bolted to the lower parts inside the installation boxes 111. The gear box 115 has an input shaft and two output shafts. The output shaft of the servo motor 113 and the input shaft of the gear box 115 are connected by a coupling. The output shaft of the input shaft and the upper end of the spiral plug 114 are connected by a coupling.

[0038] When the contact plate 105 stops moving downward, the sliding plate 102 continues to move downward. The sliding plate 102 will drive the installation box 111 and the pressing plate 112 to move downward, thereby driving the spiral plug 114 to move downward. The spiral plug 114 will be inserted into the soil to prevent the device from moving on a ground with gravel and loose soil, further improving the stability of the device. At the same time, the servo motor 113 is started. The output shaft of the servo motor 113 drives the spiral plug 114 to rotate through the gear box 115, reducing the friction between the spiral plug 114 and the soil, so that the spiral plug 114 can be better inserted into the soil. Subsequently, the pressing plate 112 will contact the contact plate 105 and press the contact plate 105, making the contact between the contact plate 105 and the ground tighter, and further increasing the resistance to the movement of the box body 1.

[0039] Refer to Figure 10 and Figure 11, further comprising a pulling mechanism, the pulling mechanism including a second spring 121, a pulling rope 122, a vertical plate 123, a rotating shaft 124 and a wire guiding wheel 125. Second springs 121 are sleeved on the sliding sleeves 6, and two ends of each second spring 121 are respectively connected to the guide rod 5 and the baffle 7. The second spring 121 is sleeved on the sliding sleeve 6, which can prevent the second spring 121 from bending. Three pulling ropes 122 are connected between the left side of the baffle 7 and the top of the left sliding plate 102. Both the front and rear sides of the top of the left guiding frame 101 are connected with vertical plates 123 through bolts. Two upper parts of the vertical plates 123 are jointly rotatably connected with a rotating shaft 124. Three wire guiding wheels 125 are evenly spaced and connected to the rotating shaft 124. The three pulling ropes 122 respectively bypass the three wire guiding wheels 125. The wire guiding wheels 125 can guide the pulling ropes 122 to make the pulling ropes 122 neater.

[0040] When the sliding plate 102 moves downward, the baffle 7 is pulled to move leftward through the pulling rope 122, opening the bottom of the box body 1, and the second spring 121 is stretched. When the sliding plate 102 moves upward, the pulling rope 122 is relaxed, and under the action of the second spring 121, the baffle 7 will move rightward to seal the bottom of the box body 1, automatically controlling the opening and closing of the box body 1, reducing manual operation and being more convenient to use.

[0041] Refer to Figure 12 and Figure 13 , further comprising a supporting mechanism, the supporting mechanism including an arc-shaped plate 131 and steel balls 132. Both the front and rear sides of the top of the rotating frame 86 are connected with arc-shaped plates 131 through bolts. The arc-shaped plate 131 is slidably connected to the left side of the frame 2. Steel balls 132 are evenly spaced and rotatably connected to the top of the arc-shaped plate 131, and the steel balls 132 are in contact with the bottom of the left side of the frame 2.

[0042] When the rotating frame 86 rotates, the steel balls 132 roll on the bottom of the left side of the frame 2. The arc-shaped plate 131 and the steel balls 132 can support the left side of the frame 2 to improve the stability of the box body 1 and the frame 2.

[0043] Refer to Figure 2 , further comprising an aggregation box 14. The aggregation box 14 is connected to the bottom of the box body 1. The aggregation box 14 can aggregate the crushed ores to ensure that the crushed ores can accurately fall onto the conveyor 94.

[0044] The above are only examples of the present invention and are not used to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the known prior art of those skilled in the art.

Claims

1. A gravel device for mine construction, comprising a box body (1) and a frame (2), the box body (1) is connected to the frame (2) on both the left and right sides, and the characteristics are as follows: It further includes a crushing roller (3), a driving motor (4), a guide rod (5), a sliding sleeve (6), a baffle (7), a moving mechanism and a discharging mechanism. Crushing rollers (3) are rotatably connected to both the left and right sides inside the box body (1). The two crushing rollers (3) are driven by spur gears. A driving motor (4) is installed on the box body (1), and the output shaft of the driving motor (4) is connected to the left crushing roller (3) to drive the crushing roller (3) to rotate and crush the ore. A guide rod (5) is connected to the box body (1), and a sliding sleeve (6) is slidably connected to the guide rod (5). A baffle (7) is connected to the sliding sleeve (6), and the baffle (7) slidably penetrates the box body (1). The baffle (7) is used to seal the bottom of the box body (1) so that the crushed ore inside the box body (1) cannot be discharged. The moving mechanism is used to control the movement of the box body (1), and the discharging mechanism is used to discharge the crushed ore.

2. The gravel device for mine construction according to claim 1, characterized in that: The moving mechanism includes a fixed frame (81), moving wheels (82), a biaxial motor (83), a rotating ring (84), balls (85), a rotating frame (86), a stepping motor (87), a wheel shaft (88) and steering wheels (89). A fixed frame (81) is connected to the bottom of the right rack (2). Moving wheels (82) are rotatably connected to both the front and rear sides of the fixed frame (81). A biaxial motor (83) is installed at the bottom of the fixed frame (81), and the output shaft of the biaxial motor (83) is connected to the moving wheels (82) to drive the moving wheels (82) to rotate and control the movement of the box body (1). A rotating ring (84) is rotatably connected to the bottom of the left rack (2). Balls (85) are circumferentially and evenly spaced on the top of the rotating ring (84), and the balls (85) are in contact with the bottom of the left rack (2). A rotating frame (86) is connected to the bottom of the rotating ring (84). A stepping motor (87) is installed on the left rack (2), and the output shaft of the stepping motor (87) is connected to the top of the rotating frame (86). The lower part of the rotating frame (86) is rotatably connected to a wheel shaft (88), and steering wheels (89) are connected to both the front and rear ends of the wheel shaft (88).

3. The gravel device for mine construction according to claim 2, characterized in that: The discharging mechanism includes a mounting frame (91), supporting wheels (92), mounting plates (93), a conveyor (94) and conveying plates (95). Mounting frames (91) are connected to both the front and rear sides of the right rack (2). Supporting wheels (92) are rotatably connected to the bottoms of the mounting frames (91). Mounting plates (93) are connected to the mounting frames (91). A conveyor (94) is installed between the two mounting plates (93). Conveying plates (95) are evenly spaced and connected to the conveyor (94). The crushed ore inside the box body (1) will fall onto the conveyor (94), and the conveyor (94) and the conveying plates (95) convey the crushed ore to the right to discharge the crushed ore.

4. A gravel device for mine construction according to claim 3, characterized in that: It also includes a stabilizing mechanism, which includes a guiding frame (101), a sliding plate (102), a lead screw motor (103), a sliding frame (104), a contact plate (105) and a first spring (106). Guiding frames (101) are connected to the frame (2). Sliding plates (102) are slidably connected to the guiding frames (101). Lead screw motors (103) are installed on the guiding frames (101). The lead screws of the lead screw motors (103) are threadedly connected to the sliding plates (102). Sliding frames (104) are slidably connected to the sliding plates (102). Contact plates (105) are connected to the bottoms of the sliding frames (104). A first spring (106) is connected between the sliding plates (102) and the sliding frames (104).

5. The gravel device for mine construction according to claim 4, characterized in that: It also includes a reinforcing mechanism, which includes an installation box (111), a pressing plate (112), a servo motor (113), a spiral plug (114) and a gear box (115). Installation boxes (111) are connected to the sliding plates (102). Pressing plates (112) are connected to the bottoms of the installation boxes (111). Servo motors (113) are installed in the installation boxes (111). Spiral plugs (114) are rotatably connected to the front and rear sides of the bottoms of the installation boxes (111). Two through holes for the spiral plugs (114) to pass through are formed in the contact plates (105). Gear boxes (115) are installed in the installation boxes (111). The gear box (115) has an input shaft and two output shafts. The output shaft of the servo motor (113) is connected to the input shaft of the gear box (115). The output shaft of the input shaft is connected to the upper ends of the spiral plugs (114).

6. The gravel device for mine construction according to claim 5, characterized in that: It also includes a pulling mechanism, which includes a second spring (121), a pulling rope (122), a vertical plate (123), a rotating shaft (124) and a wire guiding wheel (125). A second spring (121) is connected between the guide rod (5) and the baffle (7). A pulling rope (122) is connected between the baffle (7) and the left sliding plate (102). A vertical plate (123) is connected to the top of the left guiding frame (101). A rotating shaft (124) is rotatably connected to the vertical plate (123). A wire guiding wheel (125) for guiding the pulling rope (122) is connected to the rotating shaft (124). The pulling rope (122) bypasses the wire guiding wheel (125).

7. A gravel device for mine construction according to claim 2, characterized in that: It also includes a supporting mechanism, which includes an arc-shaped plate (131) and steel balls (132). Arc-shaped plates (131) are connected to the front and rear sides of the top of the rotating frame (86). The arc-shaped plates (131) are slidably connected to the left frame (2). Steel balls (132) for supporting the left frame (2) are rotatably connected to the top of the arc-shaped plate (131) at equal intervals. The steel balls (132) are in contact with the bottom of the left frame (2).

8. A gravel device for mine construction according to claim 1, characterized in that: It also includes an aggregation box (14), and the aggregation box (14) is connected to the bottom of the box body (1).

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