Underground mine car with prevention of incomplete discharge

Abstract

The application discloses an underground mine car capable of preventing incomplete ore discharging, and relates to the technical field of underground mine cars. The underground mine car comprises a car body provided with a hopper, a hydraulic oil cylinder capable of driving the hopper to tilt and discharge ore, and a ore blocking unit used for preventing ore in the hopper from falling. A trapezoidal protruding part is arranged on the bottom surface of the inner cavity of the hopper. The underground mine car further comprises two push plate units and a power unit used for driving the two push plate units to move in opposite directions or in reverse directions. The power unit and the push plate unit are arranged. When the hydraulic oil cylinder drives the hopper to tilt and discharge ore, the pulling force generated by the hydraulic oil cylinder drives the two push plate units to move in opposite directions (i.e. relative movement) and push the ore in the corners to the middle part of the hopper for discharging. Meanwhile, during the process of restoring the hopper to the horizontal state by the hydraulic oil cylinder, the power unit drives the two push plate units to move in reverse directions and restore to the original positions by the action of gravity. The underground mine car is beneficial to complete ore discharging, and the pushing and resetting operations are automatically realized during the ore discharging operation.

Description

Technical Field

[0001] The invention relates to the technical field of underground ore transport vehicles, in particular to an underground ore transport vehicle capable of preventing incomplete material discharge. Background Art

[0002] Underground ore trucks are mainly used in mines for loading, transporting and dumping operations. They can also be used in highway, railway, tunnel and construction projects. They are suitable for working conditions with harsh, narrow, low and muddy working surfaces.

[0003] The existing underground ore transport vehicles with a loading capacity of 30T to 50T need to be equipped with large tires to support them due to their large load capacity. At the same time, in order to cooperate with the hydraulic cylinder to lift the hopper and maximize the use of space, two trapezoidal protrusions are designed inside the hopper. Due to the existence of the two trapezoidal protrusions, when the hopper is tilted to discharge the material (the maximum tilt angle of the hopper is generally not more than 60°), ore residue is easily left between the two trapezoidal protrusions and the corners of the hopper, resulting in incomplete discharge of the hopper. Therefore, the present application provides an underground ore transport vehicle that prevents incomplete discharge to meet the needs. Summary of the Invention

[0004] The purpose of the present application is to provide an underground ore transport vehicle that prevents incomplete material discharge. The vehicle is provided with a power unit and a push plate unit. The pulling force generated when the hydraulic cylinder drives the hopper to tilt and discharge the material drives the two push plate units to move together (i.e., relative movement), and pushes the ore in the corner to the middle part of the hopper for discharge. At the same time, when the hopper is restored to a horizontal position by the hydraulic cylinder, the power unit relies on its own gravity to drive the two push plate units to move backwards and return to their original positions, which is conducive to the complete discharge of the underground ore transport vehicle, and automatically realizes the pushing and resetting operations while the material is being discharged.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an underground ore transport vehicle for preventing incomplete material discharge, comprising a vehicle body with a hopper, the vehicle body being equipped with a hydraulic cylinder capable of driving the hopper to tilt and discharge the material, and an ore-blocking unit for preventing the ore in the hopper from falling, a trapezoidal protrusion being provided on the bottom surface of the inner cavity of the hopper, and further comprising two push plate units for pushing the ore to the middle of the hopper and a power unit for driving the two push plate units to move relative to or backwards, the power unit utilizing the pulling force generated when the hydraulic cylinder drives the hopper to tilt and discharge the material to drive the two push plate units to gather together, and in the process of the hopper being restored to a horizontal level by the hydraulic cylinder, the power unit relies on its own gravity to drive the two push plate units to move relative to each other and return to their original positions.

[0006] Preferably, the push plate unit includes an L-shaped push plate whose lower end is slidably fitted with the bottom, side and outer end surface of the hopper bottom, side and trapezoidal protrusion, and a screw rotatably arranged on the side wall of the inner cavity of the hopper, and a plurality of threaded tube groups are threadedly sleeved on the screw, and each threaded tube group is provided with two threaded tubes, and the two threaded tubes are respectively threadedly sleeved on the forward thread segment and the reverse thread segment provided on the screw, and the two threaded tubes are rotatably connected to the L-shaped push plate through a movable rod, one end of the screw passes through the hopper and is fixedly connected to the gear, and the bottom of the horizontal plate of the L-shaped push plate is fitted with the upper end of the hopper, so A first sealing plate is fixed on the end surface of the L-shaped push plate close to the inner cavity side end of the hopper, and a third sealing plate is fixed on the inner cavity side wall of the hopper, and a plurality of second sealing plates are arranged between the first sealing plate and the third sealing plate, and the first sealing plate, the third sealing plate and the plurality of second sealing plates are arranged in a stepped manner, and the first sealing plate and the plurality of second sealing plates are all provided with T-shaped sliders, and the third sealing plate and the plurality of second sealing plates are all provided with sliding grooves adapted to the T-shaped sliders, and the first sealing plate, the plurality of second sealing plates and the third sealing plate are slidably connected;

[0007] The power unit includes a U-shaped gravity rod and two U-shaped rods that can limit the U-shaped gravity rod, and the two U-shaped rods are fixed on the outer wall of the hopper, and the two lower ends of the U-shaped gravity rod respectively pass through the U-shaped cavities of the two U-shaped rods, and limiting blocks are fixed in the U-shaped cavities of the two U-shaped rods, and the ends of the limiting blocks are slidably arranged in the limiting grooves opened on the U-shaped gravity rod. A number of driving teeth are fixed in a straight line on the outer walls of both side ends of the U-shaped gravity rod, and the driving teeth are plugged into the gears. A guide wheel is installed above the U-shaped gravity rod, and a pull rope is fixed to the upper end of the U-shaped gravity rod, and the other end portion of the pull rope is wrapped around the guide wheel and connected to the vehicle body.

[0008] Preferably, a first movable hole and a second movable hole with the same inclination are respectively provided on the limit block and in the inner cavity of the limit groove. The first movable hole and the second movable hole are both arranged obliquely upward. A limiting column is inserted into the first movable hole, and the upper end of the limiting column is located in the second movable hole. The length of the second movable hole is not less than the length of the limiting column.

[0009] Preferably, the angle between the first movable hole and the second movable hole and the horizontal plane is set to be between 25° and 35°.

[0010] Preferably, it further includes a blocking unit for preventing the end of the limiting column from moving out of the first movable hole due to vibration of the vehicle body.

[0011] Preferably, the blocking unit includes an electromagnet electrically connected to the power supply on the vehicle body and magnetically fixed to the limit column. The electromagnet is fixedly mounted at the bottom of the inner cavity of the first movable hole, and a controller electrically connected to the electromagnet is arranged in the cab of the vehicle body.

[0012] Preferably, the blocking unit includes several elastic rubber parts filled with non-Newtonian fluid, and several of the elastic rubber parts are fixedly arranged in corresponding mounting grooves, and the mounting grooves are arranged on the inner wall of the second movable hole, and the elastic rubber parts are respectively provided with collision protrusions and expansion protrusions located in the second movable hole and the mounting groove.

[0013] Preferably, a protective cover is provided on the outer wall of the hopper, which can wrap the U-shaped gravity rod, the gear and the two U-shaped rods.

[0014] In summary, the technical effects and advantages of the present invention are as follows:

[0015] 1. The present invention has a reasonable structure and is equipped with a power unit and a push plate unit. The pulling force generated by the hydraulic cylinder when the hopper is tilted to discharge the material drives the two push plate units to move together (i.e., relative movement), pushing the ore in the corner to the middle part of the hopper for discharge. At the same time, when the hopper is restored to the level by the hydraulic cylinder, the power unit relies on its own gravity to drive the two push plate units to move backwards and return to their original positions, which is conducive to the thorough discharge of underground ore transport vehicles. The pushing and resetting operations are automatically realized during the discharge operation.

[0016] 2. In the present invention, a first movable hole, a second sliding hole and a limit column are provided obliquely upward, which can prevent the U-shaped gravity rod from jumping up and down when the underground mining vehicle is on a pothole-forming road, thereby avoiding the generation of noise and increasing the service life of various components, while not affecting the subsequent movement of the U-shaped gravity rod by the pull rope;

[0017] 3. In the present invention, the angles between the first movable hole and the second movable hole and the horizontal plane are set between 25° and 35°, and sufficient rotation time (i.e., the time required for the hopper to rotate to 60°) is left to allow the limit column to completely slide into the second movable hole, and then the pull rope is straightened to drive the two L-shaped push plates to move relative to each other to push the ore remaining in the corners to the middle part of the hopper;

[0018] 4. In the present invention, a blocking unit is provided, which can be an electromagnet or an elastic rubber member filled with a non-Newtonian fluid, which can effectively ensure that the limit column is always in a stable state when the hopper is in a horizontal position, which is conducive to the continuous stability of the U-shaped gravity rod;

[0019] 5. In the present invention, a protective cover is provided to prevent ore from falling into the gap between the driving teeth and the gear and affecting the rotation of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the partial split structure of the present invention;

[0023] Figure 3 For the present invention Figure 1 Middle right view structural diagram;

[0024] Figure 4 For the present invention Figure 1 Schematic diagram of the push plate unit structure;

[0025] Figure 5 For the present invention Figure 4 A in the middle is an enlarged structural diagram;

[0026] Figure 6 For the present invention Figure 2 Schematic diagram of the local structure of the middle U-shaped gravity rod;

[0027] Figure 7 For the present invention Figure 6 Middle partial right view cross-sectional structure diagram;

[0028] Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0029] Figure 9 This is the residual ore discharge path diagram of the present invention.

[0030] In the figure: 1. Car body; 2. Hopper; 3. Hydraulic cylinder; 4. Ore-blocking unit; 5. Trapezoidal protrusion; 6. Push plate unit; 61. L-shaped push plate; 62. Screw; 63. Gear; 64. Movable rod; 65. Threaded pipe; 66. Third sealing plate; 67. First sealing plate; 68. Second sealing plate; 69. T-shaped slider; 7. Power unit; 71. U-shaped gravity rod; 72. Guide wheel; 73. Pull rope; 74. U-shaped rod; 75. Limit block; 76. Limit groove; 77. Drive tooth; 78. Limit column; 8. Protective cover; 9. First movable hole; 10. Second movable hole; 11. Electromagnet; 12. Elastic rubber part; 13. Collision protrusion; 14. Expansion protrusion; 15. Mounting groove. DETAILED DESCRIPTION

[0031] 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.

[0032] Example: Reference Figure 1-2 The shown embodiment is an underground ore transport vehicle for preventing incomplete material discharge, comprising a vehicle body 1 with a hopper 2, a hydraulic cylinder 3 for driving the hopper 2 to tilt and discharge the material, and an ore-blocking unit 4 for preventing the ore in the hopper 2 from falling, installed on the vehicle body 1, a trapezoidal protrusion 5 being provided on the bottom surface of the inner cavity of the hopper 2, and two push plate units 6 for pushing the ore to the middle of the hopper 2 and a power unit 7 for driving the two push plate units 6 to move relative to or backwards, the power unit 7 utilizes the pulling force generated when the hydraulic cylinder 3 drives the hopper 2 to tilt and discharge the material to drive the two push plate units 6 to gather together, and in the process of the hopper 2 being restored to a horizontal level by the hydraulic cylinder 3, the power unit 7 relies on its own gravity to drive the two push plate units 6 to move relative to each other and return to their original positions.

[0033] As a preferred implementation in this embodiment, Figure 2-6As shown, the push plate unit 6 includes an L-shaped push plate 61 whose lower end is slidably fitted with the bottom, side end and outer end surface of the trapezoidal protrusion 5 of the hopper 2, and a screw 62 rotatably set on the side wall of the inner cavity of the hopper 2. A plurality of threaded tube groups are threadedly sleeved on the screw 62, and each threaded tube group is provided with two threaded tubes 65. The two threaded tubes 65 are respectively threadedly sleeved on the forward thread segment and the reverse thread segment provided on the screw 62. The two threaded tubes 65 are rotatably connected to the L-shaped push plate 61 through a movable rod 64. One end of the screw 62 passes through the hopper 2 and is fixedly connected to the gear 63. The bottom of the horizontal plate of the L-shaped push plate 61 is fitted with the upper end of the hopper 2. A first sealing plate 67 is fixed on the end surface of the L-shaped push plate 61 close to the side end of the inner cavity of the hopper 2, and a third sealing plate 67 is fixed on the side wall of the inner cavity relative to the hopper 2. The sealing plate 66, a plurality of second sealing plates 68 are provided between the first sealing plate 67 and the third sealing plate 66, the first sealing plate 67, the third sealing plate 66 and the plurality of second sealing plates 68 are arranged in a stepped manner, the first sealing plate 67 and the plurality of second sealing plates 68 are provided with a T-shaped slider 69, the third sealing plate 66 and the plurality of second sealing plates 68 are provided with a slide groove adapted to the T-shaped slider 69, the first sealing plate 67, the plurality of second sealing plates 68 and the third sealing plate 66 are slidably connected, the power unit 7 includes a U-shaped gravity rod 71 and two U-shaped rods 74 that can limit the U-shaped gravity rod 71, the two U-shaped rods 74 are fixed on the outer wall of the hopper 2, and the two lower ends of the U-shaped gravity rod 71 pass through the two U-shaped rods The U-shaped cavity 74 is formed, and the U-shaped cavities of the two U-shaped rods 74 are fixed with limit blocks 75, and the ends of the limit blocks 75 are slidably set in the limit grooves 76 provided on the U-shaped gravity rod 71. The outer walls of the two side ends of the U-shaped gravity rod 71 are fixed with a number of driving teeth 77 in a straight line. The driving teeth 77 are plugged into the gear 63. A guide wheel 72 is installed above the U-shaped gravity rod 71, and a pull rope 73 is fixed to the upper end of the U-shaped gravity rod 71. The other end of the pull rope 73 is partially wrapped around the guide wheel 72 and connected to the vehicle body 1. The hydraulic cylinder 3 is used to tilt the hopper 2 to discharge the material, and the ore in the hopper 2 is tilted outward from the discharge end of the tilted hopper 2 by its own gravity. As the inclination of the hopper 2 becomes larger and larger, the pull rope 73 will be straightened. As the hopper 2 tilts As the slope continues to increase, the pull rope 73 will exert a pulling force on the U-shaped gravity rod 71 and drive the U-shaped gravity rod 71 to move upward (at this time, most of the ore in the hopper has been dumped out, and the ore remaining between the trapezoidal protrusion 5 and the corner of the hopper 2 has not been discharged due to the obstruction of the trapezoidal protrusion 5). The moving U-shaped gravity rod 71 will drive the two gears 63 connected with it to rotate through the driving teeth 77, and the two gears 63 drive the two screws 62 to rotate. Through the rotation of the two screws 62, one end of the two movable rods 64 on the threaded tube group can be made to move backwards, and finally the two L-shaped push plates 61 can be made to move relative to each other, which can push the ore remaining between the trapezoidal protrusion 5 and the corner of the hopper 2 and the ore that may exist on the trapezoidal protrusion 5 to the inclined part in the middle of the hopper 2.The ore moves downward along its inclined surface by its own gravity and is finally discharged from the discharge end of the hopper 2, which is conducive to the complete discharge of the ore. After the discharge is completed, the hopper 2 is restored to its original position by the hydraulic cylinder 3. In this process, the U-shaped gravity rod 71 will move downward relative to the side end of the hopper 2 by its own gravity. At this time, the downward moving U-shaped gravity rod 71 will drive the two screws 62 to rotate in the opposite direction through the driving teeth 77 provided thereon, so that one end of the two movable rods 64 of the threaded pipe group moves relative to each other, and finally the two L-shaped push plates 61 move back to their original positions. During the entire movement process, the second sealing plate 66 is driven by the T-shaped slider 69 provided on the first sealing plate 66. The sealing plate 68 moves, and the first sealing plate 66, several second sealing plates 68, and the third sealing plate 67 cooperate to seal one side of the gap between the L-shaped push plate 61 and the inner wall of the hopper 2. At the same time, the width of the upper cross plate of the L-shaped push plate 61 is greater than the width of the trapezoidal protrusion 5. Therefore, when the T-shaped push plate 61 moves, its cross plate always seals the top of the gap between the L-shaped push plate 61 and the inner wall of the hopper 2, while the bottom and other side of the gap are sealed by the bottom and side walls of the inner cavity of the hopper 2. This ensures that no ore enters the gap, prevents ore from entering the gap, and prevents the L-shaped push plate 61 from being able to return to its original position, thereby reducing the loading capacity of the hopper 2.

[0034] It should be noted that universal balls are provided on the end surfaces of the L-shaped push plate 61 that contact the hopper 2 and the trapezoidal protrusion 5, which can reduce the friction between the L-shaped push plate 61 and the hopper 2 and facilitate the movement of the L-shaped push plate 61.

[0035] In this embodiment, if Figure 7As shown, a first movable hole 9 and a second movable hole 10 with the same inclination are respectively provided on the limit block 75 and the inner cavity of the limit groove 76. The first movable hole 9 and the second movable hole 10 are both arranged obliquely upward. A limiting post 78 is inserted into the first movable hole 9, and the upper end of the limiting post 78 is located in the second movable hole 10. The length of the second movable hole 10 is not less than the length of the limiting post 78. In order to ensure that the U-shaped gravity rod 71 does not jump up and down due to vibration when the local underground mining car is empty and traveling on a bumpy road (its up and down jumping will drive the two L-shaped and T-shaped push plates 61 to move back and forth quickly, causing collision noise and easily reducing the service life of the push plate unit 6, and the U-shaped gravity rod 71 collides with the limit block 75 to generate noise), a movable limiting post 78 is arranged obliquely. When the hopper 2 rotates to a certain inclination angle and the pull rope 73 is not straightened, the inclined limit post 78 The upper limit post 78 is set obliquely downward due to the change in the rotation angle of the hopper 2. At this time, through the action of gravity, the limit post 78 will completely enter the second movable hole 10, and the hopper 2 continues to rotate. At this time, the pull rope 73 is straightened and drives the two L-shaped push plates 61 to move. When the hopper 2 returns to its original position, the limit post 78 set obliquely downward becomes an oblique upward setting state again. At this time, one end of the limit post 78 is inserted into the first movable hole 9 by its own gravity. At this time, since the limit post 78 crosses the first movable hole 9 and the second movable hole 10, the limit post 78 blocks the movement of the U-shaped gravity rod 71, which can prevent the U-shaped gravity rod 71 from jumping up and down when the underground mining car is forming a pothole road, avoid the generation of noise and increase the service life of each component, while not affecting the subsequent pull rope 73 to pull the U-shaped gravity rod 71 to move.

[0036] It should be noted that the length of the preferably inclined second movable hole 10 is equal to the length of the limiting column 78. When the vehicle body 1 is traveling on a bumpy road, the shaking or movement inertia of the vehicle body 1 may also drive the limiting column 78 to move completely to the second movable hole 10, causing the U-shaped gravity rod 71 to jump up and down. When the length of the second movable hole 10 is consistent with the length of the limiting column 78, the time required for the limiting column 78 to return to the first movable hole 9 for limiting after moving to the second movable hole 10 can be shortened, the U-shaped gravity rod 71 can be limited in time, and the frequency of the U-shaped gravity rod 71 jumping up and down can be reduced.

[0037] In this embodiment, if Figure 7As shown, the angle between the first movable hole 9 and the second movable hole 10 and the horizontal plane is set to be between 25° and 35°. Since the tilt angle of the hopper 2 of a commonly used underground ore transport vehicle does not exceed 60° when it is tilted to discharge materials, the angle is set to be between 25° and 35°, so that the limit column 78 can slide freely between the first movable hole 9 and the second movable hole 10 when tilted at this angle, and at the same time, there is enough rotation time (that is, the time taken to continue rotating the hopper 2 to rotate to 60°) to allow the limit column 78 to completely slide into the second movable hole 10, and then the pull rope 73 is straightened to drive the two L-shaped push plates 71 to move relative to each other to push the ore remaining in the corner to the middle part of the hopper 2.

[0038] As a preferred implementation in this embodiment, Figure 7 As shown, it also includes a blocking unit that prevents the end of the limit column 78 from moving out of the first movable hole 9 due to the vibration of the vehicle body 1, which can effectively prevent the U-shaped gravity rod 71 from jumping up and down when the empty vehicle is traveling on a bumpy road.

[0039] In this embodiment, if Figure 7 As shown, the blocking unit includes an electromagnet 11 electrically connected to the power supply on the vehicle body 1 and magnetically fixed to the limit column 78. The electromagnet 11 is fixedly installed at the bottom of the inner cavity of the first movable hole 9. The controller electrically connected to the electromagnet 11 is arranged in the cab of the vehicle body 1. The limit column 78 is magnetically fixed by the magnetic force of the electromagnet 11, which can prevent the limit column 78 from moving into the second movable hole 10. When discharging, the electromagnet 11 can be controlled to be powered off. When the limit column 78 is tilted downward, it enters the second movable hole 10 by its own gravity. When one end of the limit column 78 returns to the first movable hole 9, the electromagnet 11 can be controlled to be powered on, which can effectively ensure that the limit column 78 is always in a stable state when the underground mining vehicle is traveling on a bumpy road.

[0040] In this embodiment, if Figure 8As shown, the blocking unit includes several elastic rubber pieces 12 filled with non-Newtonian fluid, which are fixedly arranged in corresponding mounting grooves 15 arranged on the inner wall of the second movable hole 10. The elastic rubber pieces 12 are respectively provided with the collision protrusion 13 and the expansion protrusion 14 located in the second movable hole 10 and the mounting groove 15. When the limiting column 78 moves to the second movable hole 10 due to the shaking or inertial movement of the vehicle body 1, it will instantaneously collide with the elastic rubber piece 12. When colliding with the non-Newtonian fluid inside, the non-Newtonian fluid will harden at the moment of collision due to its own characteristics, thereby blocking the movement of the limiting column 78 into the second movable hole 10, so that the limiting column 78 cannot completely enter the second movable hole 10. When the hopper 2 is tilted to pour materials, the limiting column 78 (which is now arranged obliquely downward) can extrude the elastic rubber piece 12 by its own gravity and make the collision protrusion 13 move to recess in the mounting groove 15, while the expansion protrusion 14 expands outward, and finally the limiting column 78 is completely moved into the second movable hole 10 by the action of gravity.

[0041] As a preferred embodiment in the present embodiment, as shown in Figure 1 and Figure 2 As shown, the outer wall of the hopper 2 is provided with a protective cover 8 that can wrap the U-shaped gravity rod 71, the gear 63 and the two U-shaped rods 74. The protective cover 8 is arranged to prevent ore from falling into the gap between the driving teeth 77 and the gear 63 and affecting the rotation of the gear 63.

[0042] It should be noted that, first, the upper end of the protective cover 8 is provided with a through hole matched with the pull rope 73; second, the guide wheel 72 can also be wrapped in the inner cavity of the protective cover 8, and the fixed end of the pull rope 73 of the vehicle body 1 penetrates the protective cover 8, which can prevent the guide wheel 72 from being damaged by falling ore.

[0043] The working principle of the present invention is as follows: the hydraulic cylinder 3 is used to tilt the hopper 2 to dump the ore, and the ore in the hopper 2 is dumped outward from the discharge end of the tilted hopper 2 by its own gravity. As the tilt of the hopper 2 becomes larger and larger, the pull rope 73 will be straightened. As the tilt of the hopper 2 continues to increase, the pull rope 73 will exert a pulling force on the U-shaped gravity rod 71 and drive the U-shaped gravity rod 71 to move upward (at this time, most of the ore in the hopper has been dumped out, and the ore remaining between the trapezoidal protrusion 5 and the corner of the hopper 2 has not been discharged due to the obstruction of the trapezoidal protrusion 5). The U-shaped gravity rod 71 drives the two gears 63 connected to the gears thereof to rotate through the driving teeth 77, and the two gears 63 drive the two screws 62 to rotate. Through the rotation of the two screws 62, one end of the two movable rods 64 on the threaded tube assembly can be made to move backwards, and finally the two L-shaped push plates 61 can be made to move relative to each other, and the ore remaining between the trapezoidal protrusion 5 and the corner of the hopper 2 can be pushed to the inclined part in the middle of the hopper 2. The ore moves downward along its inclined surface under the action of its own gravity and is finally discharged from the discharge end of the hopper 2, which is conducive to the complete discharge of the ore. After the discharge is completed, the hopper is made to discharge through the hydraulic cylinder 3. 2 is restored to its original position. During this process, the U-shaped gravity rod 71 moves downward relative to the side end of the hopper 2 due to its own gravity. At this time, the downwardly moving U-shaped gravity rod 71 drives the two screws 62 to rotate in the opposite direction through the driving teeth 77 provided thereon, so that one end of the two movable rods 64 of the threaded pipe group moves relative to each other, and finally the two L-shaped push plates 61 move back to their original positions. During the entire movement process, the second sealing plate 68 is driven to move by the T-shaped slider 69 provided on the first sealing plate 66. Through the first sealing plate 66, the plurality of second sealing plates 68 and The cooperation of the third sealing plate 67 seals one side of the gap between the L-shaped push plate 61 and the inner wall of the hopper 2. At the same time, the width of the horizontal plate at the upper end of the L-shaped push plate 61 is greater than the width of the trapezoidal protrusion 5, so that when the T-shaped push plate 61 moves, its horizontal plate always seals the top of the gap between the L-shaped push plate 61 and the inner wall of the hopper 2, and the bottom end and the other side end of the gap are sealed by the bottom and side walls of the inner cavity of the hopper 2, which can ensure that no ore enters the gap, and can prevent ore from entering the gap, causing the L-shaped push plate 61 to be unable to return to its original position and reducing the loading capacity of the hopper 2.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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 can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An underground ore transport vehicle for preventing incomplete material discharge, comprising a vehicle body (1) with a hopper (2), a hydraulic cylinder (3) for driving the hopper (2) to tilt and discharge the material, and an ore-blocking unit (4) for preventing the ore in the hopper (2) from falling, mounted on the vehicle body (1), a trapezoidal protrusion (5) being provided on the bottom surface of the inner cavity of the hopper (2), and characterized in that: It also includes two push plate units (6) for pushing the ore into the middle of the hopper (2) and a power unit (7) for driving the two push plate units (6) to move relative to or in reverse, wherein the power unit (7) drives the two push plate units (6) to move together by the pulling force generated when the hydraulic cylinder (3) drives the hopper (2) to tilt and unload the material, and when the hopper (2) is restored to a horizontal position by the hydraulic cylinder (3), the power unit (7) drives the two push plate units (6) to move relative to each other and return to their original positions by relying on its own gravity. The push plate unit (6) includes an L-shaped push plate (61) whose lower end is slidably fitted with the bottom, side end and outer end surface of the trapezoidal protrusion (5) of the hopper (2), and a screw (62) rotatably arranged on the side wall of the inner cavity of the hopper (2). A plurality of threaded tube groups are threadedly sleeved on the screw (62), and each threaded tube group is provided with two threaded tubes (65). The two threaded tubes (65) are respectively threadedly sleeved on the forward thread segment and the reverse thread segment provided on the screw (62). Both the threaded tubes (65) are rotatably connected to the L-shaped push plate (61) through a movable rod (64). One end of the screw (62) passes through the hopper (2) and is fixedly connected to the gear (63). The bottom of the horizontal plate of the L-shaped push plate (61) is fitted with the upper end of the hopper (2). The L-shaped push plate (6 1) A first sealing plate (67) is fixed on the end surface close to the inner cavity side end of the hopper (2), and a third sealing plate (66) is fixed on the inner cavity side wall opposite to the hopper (2). A plurality of second sealing plates (68) are arranged between the first sealing plate (67) and the third sealing plate (66). The first sealing plate (67), the third sealing plate (66) and the plurality of second sealing plates (68) are arranged in a stepped manner. A T-shaped slider (69) is provided on the first sealing plate (67) and the plurality of second sealing plates (68). A sliding groove adapted to the T-shaped slider (69) is provided on the third sealing plate (66) and the plurality of second sealing plates (68). The first sealing plate (67), the plurality of second sealing plates (68) and the third sealing plate (66) are slidably connected to each other; The power unit (7) comprises a U-shaped gravity rod (71) and two U-shaped rods (74) capable of limiting the position of the U-shaped gravity rod (71). The two U-shaped rods (74) are fixed on the outer wall of the hopper (2). The two lower ends of the U-shaped gravity rod (71) respectively pass through the U-shaped cavities of the two U-shaped rods (74). The U-shaped cavities of the two U-shaped rods (74) are both fixed with limiting blocks (75), and the ends of the limiting blocks (75) are slidably arranged on the U-shaped gravity rod ( A plurality of driving teeth (77) are fixed in a straight line on the outer walls of both sides of the U-shaped gravity rod (71), and the driving teeth (77) are plugged into the gear (63). A guide wheel (72) is installed above the U-shaped gravity rod (71), and a pull rope (73) is fixed to the upper end of the U-shaped gravity rod (71), and the other end of the pull rope (73) is wound around the guide wheel (72) and connected to the vehicle body (1); A first movable hole (9) and a second movable hole (10) with the same inclination are respectively provided on the limit block (75) and in the inner cavity of the limit groove (76). The first movable hole (9) and the second movable hole (10) are both arranged obliquely upward. A limit column (78) is inserted into the first movable hole (9), and the upper end of the limit column (78) is located in the second movable hole (10). The length of the second movable hole (10) is not less than the length of the limit column (78).

2. The underground ore transport vehicle for preventing incomplete material discharge according to claim 1, characterized in that: The angle between the first movable hole (9) and the second movable hole (10) and the horizontal plane is set to be between 25° and 35°.

3. The underground ore transport vehicle for preventing incomplete material discharge according to claim 1, characterized in that: It also includes a blocking unit that prevents the end of the limiting column (78) from moving out of the first movable hole (9) due to vibration of the vehicle body (1).

4. The underground ore transport vehicle for preventing incomplete material discharge according to claim 3, characterized in that: The blocking unit includes an electromagnet (11) electrically connected to a power source on the vehicle body (1) and magnetically fixed to the limiting column (78), the electromagnet (11) being fixedly mounted on the bottom of the inner cavity of the first movable hole (9), and a controller electrically connected to the electromagnet (11) being arranged in the cab of the vehicle body (1).

5. The underground ore transport vehicle for preventing incomplete material discharge according to claim 3, characterized in that: The blocking unit comprises a plurality of elastic rubber members (12) filled with a non-Newtonian fluid, wherein the plurality of elastic rubber members (12) are fixedly arranged in corresponding mounting grooves (15), the mounting grooves (15) being arranged on the inner wall of the second movable hole (10), and the elastic rubber members (12) are respectively provided with a collision protrusion (13) and an expansion protrusion (14) located in the second movable hole (10) and the mounting groove (15).

6. The underground ore transport vehicle for preventing incomplete material discharge according to claim 1, characterized in that: A protective cover (8) is provided on the outer wall of the hopper (2) and is capable of covering the U-shaped gravity rod (71), the gear (63) and the two U-shaped rods (74).

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