Weighing and charging gate of mine heavy truck

Abstract

The invention discloses a weighing and charging gate for a mine heavy truck. The weighing and charging gate comprises a material distributing barrel, a feeding sleeve and a positioning and feeding assembly. A row of material distributing barrels are arranged at the bottom of a built stock bin, and a quantitative feeding mechanism is arranged in the lower half portion of each material distributing barrel. A feeding sleeve is sleeved outside the material distributing barrel, lifting assemblies are arranged on the front side wall and the rear side wall of the feeding sleeve, and a plurality of laser range finders are arranged at the bottoms of the lifting assemblies; the bottom end of the feeding sleeve is gradually thinned to form a second conical bottom, the bottom of the second conical bottom is connected with three flow dividing pipes, the bottom end of each flow dividing pipe is connected with a feeding pipe, and a discharging mechanism is arranged in each flow dividing pipe. The device can automatically measure the position and the length of a truck box after a heavy truck is driven into the truck box, the positioning feeding pipe is located at the position of a truck box opening through the feeding sleeves located above the truck box in a falling mode, quantitative mineral aggregate is discharged into each feeding sleeve through the quantitative feeding mechanism, then discharging can be conducted in a row from the position below the discharging mechanism, the discharging precision is high, flying dust is small, and the working efficiency is high. And accurate feeding can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of weighing and charging gates, and in particular to a weighing and charging gate for heavy-duty trucks in mines. Background Art

[0002] The weighing and loading gate of heavy trucks in mines is a key equipment in mine loading operations. When the heavy trucks in mines drive to the weighing position for loading ore, the weighing and loading gate needs to be opened to load a certain amount of ore into the box of the heavy trucks in mines. The existing method uses a mobile feeding pipe to feed materials. The heavy trucks are on the weighing platform, and the loading amount is determined by the weight change of the heavy trucks. However, the mobile pipes are easy to break and difficult to control, and the ore is easy to scatter, and the dust is also obvious. Some use a row of feeding hoppers to feed materials. According to the monitoring of the length and position of the heavy trucks, the feeding hoppers above the box of the heavy trucks are moved down to feed materials, but the feeding loading amount also depends on the weight change of the electronic weighing platform. Due to the impact force during the unloading process, the weighing accuracy is not high, and it is not easy to control, and the dust is also very serious. Now there is a need for a heavy loading gate that can accurately feed the load, reduce dust, and accurately determine the position and length of the box for accurate feeding. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to propose a mine heavy truck weighing and loading gate, which solves the problems of low loading accuracy, large dust during feeding, and inability to accurately determine the position and length of the heavy truck box.

[0004] A mine heavy truck weighing and charging gate according to the present invention comprises a material distribution cylinder, a material feeding sleeve and a positioning and feeding assembly; A conical bottom is set at the bottom of the built silo, and a row of material distribution barrels are connected below the conical bottom. The spacing between adjacent material distribution barrels is 15-25cm, and each material distribution barrel is provided with a quantitative feeding mechanism in the lower half; A feeding sleeve is disposed outside each of the material distribution barrels, and a lifting assembly is disposed on the front and rear side walls of the feeding sleeves. The lifting assembly can enable the feeding sleeves to move up and down along the material distribution barrels, but the top of the feeding sleeves shall not be lower than the bottom of the material distribution barrels, and a plurality of laser rangefinders are disposed at the bottom of the lifting assembly; The bottom end of the feeding sleeve gradually tapers to form a second conical bottom. The bottom of the second conical bottom is connected to three diversion pipes, and the diversion pipes are arranged side by side. The bottom end of each diversion pipe is connected to a gradually thickening positioning feeding pipe. All the positioning feeding pipes under the feeding sleeve form a row and are arranged at equal intervals from each other. A discharge mechanism is provided in the diversion pipe.

[0005] In some embodiments of the present invention, the quantitative feeding mechanism includes a blocking installation box, a blocking plate, a blocking plate pulling assembly and an impact force detector, the top of the blocking installation box is a slope, the blocking installation box is fixedly installed in the distribution barrel near the bottom end, the blocking plate passes through the side wall of the blocking installation box to block the channel of the distribution barrel that is not blocked by the blocking installation box, and the blocking plate is provided with a pull plate fixed vertically downward on one side of the blocking plate in the blocking installation box, the two ends of the pull plate are movably sleeved on two limit sliding rods, the pull plate spirally passes through a screw rod, and the two ends of the screw rod A bearing is sleeved at the end and the bearing is fixed. A first bevel gear plate is sleeved at one end of the screw rod and a linkage rod is provided below the first bevel gear plate. The middle of the linkage rod is sleeved and fixed with a bearing. Two second bevel gear plates are sleeved at both ends of the linkage rod. A third bevel gear plate is sleeved on the rotating shaft of the driving motor and meshes with one of the second bevel gear plates, and another of the second bevel gear plates is meshed with the first bevel gear plate. An impact force detector is provided in the unblocked channel below the blocking plate, and the mounting rod of the impact force detector is inserted into the blocking mounting box.

[0006] In other embodiments of the present invention, the width of the feeding sleeve is 5-10 cm greater than the width of the secondary feeding sleeve, the spacing between adjacent feeding sleeves is 3-5 cm, and the feeding sleeve is a steel plate with a wall thickness of 8-12 mm.

[0007] In some other embodiments of the present invention, the discharge mechanism has the same structure as the quantitative feeding mechanism but is different in size, and the discharge mechanism is not provided with an impact force detector.

[0008] In other embodiments of the present invention, the lifting assembly includes two mounting plates, four hydraulic telescopic cylinders and two side plates. An inverted L-shaped frame is set up on both sides of the material distribution barrel, and a mounting plate is installed on the inverted L-shaped frame. A side plate is fixed to each side wall of the feeding sleeve near the bottom end. The two mounting plates are close to the side walls of the feeding sleeve. A hydraulic telescopic cylinder is fixed to each mounting plate at two corners near the side of the feeding sleeve. The hydraulic telescopic cylinder is arranged downward and the ends of the telescopic shaft are fixed at the two end positions of the side plates.

[0009] In other embodiments of the present invention, laser rangefinders are provided at equal intervals on the lower surfaces of the two side plates on the two side walls of each feeding sleeve, and the number of laser rangefinders on the lower surface of each side plate is not less than three.

[0010] In other embodiments of the present invention, the width of the feeding sleeve is at least 1 m, and the width of the bottom end of the positioning feeding pipe is not less than 30 cm.

[0011] In other embodiments of the present invention, the length of a row of the feeding sleeves is at least 2 m longer than the length of the loading box of a heavy mining truck.

[0012] In other embodiments of the present invention, the lifting height of the feeding sleeve is not less than 1.5m, and the positioning feeding pipe must be higher than the box opening height of the loading box of the mining heavy truck after being lowered, and a piece of dust-proof rubber extending downward is fixed on each of the four outer walls at the bottom end of the positioning feeding pipe.

[0013] In the present invention, the position and length of the rear box of a heavy truck can be automatically measured. After the loading capacity is determined, the feeding sleeve located above the box is lowered to position the feeding pipe at the box opening. A quantitative mineral material is discharged into each feeding sleeve through a quantitative feeding mechanism, and then the material is discharged in a row from below the discharge mechanism. The discharge has high accuracy, little dust, and accurate feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 The present invention is a side view of a mine heavy truck weighing and charging gate.

[0015] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a mine heavy truck weighing and charging gate.

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of a mining heavy truck weighing and charging gate proposed by the present invention (without a material distribution barrel).

[0017] Figure 4 The figure is a schematic structural diagram of a weighing and charging gate of the present invention.

[0018] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the dispensing barrel proposed in the present invention.

[0019] Figure 6 This is a top view of the interior of the dispensing barrel proposed by the present invention at the position of the screw.

[0020] Figure 7 This is a schematic diagram of the installation of the impact force detector proposed in the present invention.

[0021] In the figure: 1. silo; 2. material distribution barrel; 21. plugging installation box; 22. plugging plate; 23. screw rod; 231. limit slide rod; 24. linkage rod; 25. drive motor; 26. impact force detector; 3. feeding sleeve; 4. diverter pipe; 41. positioning feeding pipe; 41. dustproof rubber; 5. mounting plate; 6. hydraulic telescopic cylinder; 61. side plate; 7. laser rangefinder. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] like Figure 1-7 As shown, a mining heavy truck weighing and charging gate proposed by the present invention comprises a material distribution cylinder 2, a material feeding sleeve 3 and a positioning and feeding assembly; A conical bottom is provided at the bottom of the built silo 1, and a row of material distribution barrels 2 are connected below the conical bottom. The spacing between adjacent material distribution barrels 2 is 15-25 cm, and each material distribution barrel 2 is provided with a quantitative feeding mechanism in the lower half; A feeding sleeve 3 is disposed outside each of the material distribution barrels 2, and a lifting assembly is disposed on the front and rear side walls of the feeding sleeve 3. The lifting assembly can enable the feeding sleeve 3 to move up and down along the material distribution barrel 2, but the top of the feeding sleeve 3 must not be lower than the bottom of the material distribution barrel 2. A plurality of laser rangefinders 7 are disposed at the bottom of the lifting assembly; The bottom end of the feeding sleeve 3 gradually tapers to form a second conical bottom 31. The bottom of the second conical bottom 31 is connected to three shunt pipes 4, and the shunt pipes 4 are arranged side by side. The bottom end of each shunt pipe 4 is connected to a gradually thickening positioning feeding pipe 41. All the positioning feeding pipes 41 under the feeding sleeve 3 form a row and are arranged at equal intervals from each other. A discharge mechanism is provided in the shunt pipe 4.

[0024] When a heavy-duty mining truck enters the position below the reloading gate, it needs to swipe to confirm the loading information. After clicking confirm, the laser rangefinder 7 on the weighing and loading gate begins to detect the distance below. The position of the truck box will be shorter than the ground, but the front position will be shorter. If one of the laser rangefinders 7 below the feeding sleeve 3 detects that it is directly above the front position, it will not move down. If one of the laser rangefinders 7 below the feeding sleeve 3 detects that it is directly above the box position, all will move down. If only one of the three positioning feeding tubes 41 on the feeding sleeve 3 is directly above the box position, it does not need to move down, and at least two will move down. In addition, the last positioning feeding tube 41 above the box near the tail of the box will not be fed to prevent the feeding from splashing to the outside.

[0025] In the next process, the amount of ore that needs to be put into each feeding sleeve 3 has been determined, and the quantitative feeding mechanism will stop feeding after feeding the quantitative ore into the feeding sleeve 3, waiting for the discharge mechanism to discharge. If the number of feedings in the positioning feeding pipe 41 below the feeding sleeve 3 is 1 or 2, the amount of ore that needs to be put into the corresponding feeding sleeve 3 is also reduced to 1 / 3 and 2 / 3 according to the weight.

[0026] Before the truck enters the weighing and charging gate position, the feeding sleeve 3 is fully raised to facilitate the entry of the truck.

[0027] The quantitative feeding mechanism includes a blocking installation box 21, a blocking plate 22, a blocking plate pulling assembly and an impact force detector 26. The top of the blocking installation box 21 is a slope. The blocking installation box 21 is fixedly installed in the distribution barrel 2 near the bottom end. The blocking plate 22 passes through the side wall of the blocking installation box 21 to block the channel of the distribution barrel 2 that is not blocked by the blocking installation box 21. The blocking plate 22 is provided with a pull plate fixed vertically downward on one side of the blocking installation box 21. The two ends of the pull plate are movably sleeved on two limit sliding rods 231. The pull plate spirally passes through a screw rod 23. The two ends of the screw rod 23 A bearing is sleeved and fixed on the bearing, a first bevel gear plate is sleeved on one end of the screw rod 23 and a linkage rod 24 is provided below the first bevel gear plate, the middle of the linkage rod 24 is sleeved and fixed with a bearing, two second bevel gear plates are sleeved on both ends of the linkage rod 24, a third bevel gear plate is sleeved on the rotating shaft of the driving motor 25 and meshes with one second bevel gear plate, and another second bevel gear plate is meshed with the first bevel gear plate, an impact force detector 26 is provided in the unblocked channel below the blocking plate 22, and the mounting rod of the impact force detector 26 is inserted into the blocking mounting box 21.

[0028] The impact force detector 26 is made of the principle of piezoelectric effect. Some crystal materials (such as quartz, piezoelectric ceramics, etc.) have piezoelectric properties. When the crystal is impacted by external force, the charge distribution inside it will change, thereby generating a charge or voltage signal proportional to the impact force on the surface of the crystal. For example, in some high-precision impact measurement scenarios, a piezoelectric impact force detector is used. When impacted, the piezoelectric crystal generates a charge. After the charge is processed by circuits such as amplifiers, it can be measured and analyzed, and then the magnitude and duration of the impact force can be obtained. The falling speed and amount of the ore material, as well as the size of the ore particles, will have different effects on the impact force detector 26. The system calculates the weight of the drop per second under different impact forces to determine the loading capacity of each feeding sleeve 3. Since the weighing and loading of heavy trucks is error-prone, a certain error is allowed. Here, a more accurate installation can be achieved. Generally, the feeding time can accurately determine the feeding amount, and then the impact force detector 26 is combined to correct the error, with higher accuracy.

[0029] The width of the feeding sleeve 3 is 5-10 cm greater than that of the secondary feeding sleeve, the spacing between adjacent feeding sleeves 3 is 3-5 cm, and the feeding sleeve 3 is a steel plate with a wall thickness of 8-12 mm.

[0030] Ensure that the feeding sleeve 3 can be effectively lifted and lowered outside the distributing barrel 2 without causing much dust.

[0031] The structure of the discharge mechanism is the same as that of the quantitative feeding mechanism, but the size is different, and the discharge mechanism is not equipped with an impact force detector. The material is also discharged by opening the blocking plate. Here, the feeding amount has been determined, and the mechanical energy feeding can be performed by opening the corresponding blocking plate of the discharge mechanism.

[0032] The lifting assembly includes two mounting plates 5, four hydraulic telescopic cylinders 6 and two side plates 61. An inverted L-shaped frame is set up on both sides of the material distribution barrel 2, and the mounting plates 5 are installed on the inverted L-shaped frame. A side plate 61 is fixed to each side wall of the feeding sleeve 2 near the bottom end. The two mounting plates 5 are close to the side walls of the feeding sleeve 3. A hydraulic telescopic cylinder 6 is fixed to each mounting plate 5 at two corners near the side of the feeding sleeve 2. The hydraulic telescopic cylinder 6 is arranged downward and the ends of the telescopic shaft are fixed to the two end positions of the side plates 61.

[0033] The synchronous lifting is performed by four hydraulic telescopic cylinders 6, and micro errors are not affected. Other lifting methods can also be used as long as the lifting is satisfied.

[0034] Laser rangefinders 7 are provided at equal intervals on the lower surfaces of the two side plates 61 on the two side walls of each feeding sleeve 3 , and the number of the laser rangefinders 7 on the lower surface of each side plate 61 is not less than three.

[0035] Since there are three positioning feeding pipes 3 under each feeding sleeve 3, there are at least three of them. If the accuracy is to be improved, 6 or 9 of them can be set.

[0036] The width of the feeding sleeve 3 is at least 1 m, and the width of the bottom end of the positioning feeding pipe 3 is not less than 30 cm.

[0037] It cannot be too narrow, and the general deviation is 30-40cm for feeding. During the feeding process, the ore slides in the car box and can basically fill the car box.

[0038] The length of a row of the feeding sleeves 3 is at least 2 m greater than the length of the loading box of a heavy mining truck.

[0039] The front and rear of the car body can be placed at the weighing and loading gates. Since it is impossible to park accurately while driving, parking within one meter is generally possible.

[0040] The lifting height of the feeding sleeve 3 is not less than 1.5m. After the positioning feeding pipe 41 is lowered, it must be higher than the box opening height of the loading box of the heavy-duty mining truck. A piece of dust-proof rubber 411 extending downward is fixed on each of the four outer walls at the bottom of the positioning feeding pipe 41. The dust-proof rubber 411 is used to reduce dust. The bottom of the carriage is generally less than 2 meters away from the top of the front of the car. According to the actual setting, it is generally at least 1.5m. Otherwise, the heavy loading gate will hit the front of the car, or it will not be able to reach the feeding position, and the dust will be more serious.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mine heavy truck weighing and charging gate, characterized by: It comprises a material distribution cylinder (2), a material feeding sleeve (3) and a positioning and feeding assembly; A conical bottom is arranged at the bottom of the constructed material bin (1), and a row of material distribution barrels (2) are connected below the conical bottom, the spacing between adjacent material distribution barrels (2) is 15-25 cm, and each material distribution barrel (2) is provided with a quantitative feeding mechanism in the lower half; A feeding sleeve (3) is disposed on the outer cover of each of the material distribution barrels (2), and a lifting assembly is disposed on the front and rear side walls of the feeding sleeve (3). The lifting assembly can enable the feeding sleeve (3) to move up and down along the material distribution barrel (2), but the top end of the feeding sleeve (3) must not be lower than the bottom end of the material distribution barrel (2), and a plurality of laser rangefinders (7) are disposed at the bottom of the lifting assembly; The bottom end of the feeding sleeve (3) gradually tapers to form a second conical bottom (31); the bottom of the second conical bottom (31) is connected to three shunt pipes (4) and the shunt pipes (4) are arranged side by side; the bottom end of each shunt pipe (4) is connected to a gradually thickening positioning feeding pipe (41); all the positioning feeding pipes (41) below the feeding sleeve (3) form a row and are arranged at equal intervals from each other; a discharge mechanism is provided in the shunt pipe (4).

2. A mine heavy truck weighing and charging gate according to claim 1, characterized in that: The quantitative feeding mechanism comprises a blocking installation box (21), a blocking plate (22), a blocking plate pulling assembly and an impact force detector (26); the top of the blocking installation box (21) is a slope; the blocking installation box (21) is fixedly installed in the material distribution barrel (2) near the bottom; the blocking plate (22) penetrates from the side wall of the blocking installation box (21) to block the passage of the material distribution barrel (2) that is not blocked by the blocking installation box (21); a pull plate fixed vertically downward is provided on one side of the blocking plate (22) in the blocking installation box (21); the two ends of the pull plate are movably sleeved on two limit sliding rods (231); a screw rod (23) is spirally penetrated by the pull plate; the screw rod (23) bearings are sleeved at both ends and the bearings are fixed, one end of the screw rod (23) is sleeved with a first bevel gear plate and a linkage rod (24) is provided below the first bevel gear plate, the middle of the linkage rod (24) is sleeved with a bearing and the bearing is fixed, two second bevel gear plates are sleeved at both ends of the linkage rod (24), a third bevel gear plate is sleeved on the rotating shaft of the driving motor (25) and meshes with one of the second bevel gear plates, and the other second bevel gear plate is meshed with the first bevel gear plate, an impact force detector (26) is provided in the unblocked channel below the blocking plate (22), and the mounting rod of the impact force detector (26) is inserted into the blocking mounting box (21).

3. A mine heavy truck weighing and charging gate according to claim 1, characterized in that: The width of the feeding sleeve (3) is 5-10 cm greater than the width of the secondary feeding sleeve, the spacing between adjacent feeding sleeves (3) is 3-5 cm, and the feeding sleeve (3) is a steel plate with a wall thickness of 8-12 mm.

4. A mine heavy truck weighing and charging gate according to claim 2, characterized in that: The structure of the discharge mechanism is the same as that of the quantitative feeding mechanism but the size is different, and the discharge mechanism is not provided with an impact force detector.

5. A mine heavy truck weighing and charging gate according to claim 1, characterized in that: The lifting assembly comprises two mounting plates (5), four hydraulic telescopic cylinders (6) and two side plates (61). An inverted L-shaped frame is set up on both sides of the material distribution barrel (2). The mounting plates (5) are mounted on the inverted L-shaped frame. A side plate (61) is fixed to each side wall of the feeding sleeve (2) near the bottom end. The two mounting plates (5) are close to the side walls of the feeding sleeve (3). A hydraulic telescopic cylinder (6) is fixed to each side corner of each mounting plate (5) near the side of the feeding sleeve (2). The hydraulic telescopic cylinder (6) is arranged downward and the ends of the telescopic shafts are fixed to the two end positions of the side plates (61).

6. A mine heavy truck weighing and charging gate according to claim 5, characterized in that: Laser distance meters (7) are provided at equal intervals on the lower surfaces of two side plates (61) on the two side walls of each feeding sleeve (3), and the number of laser distance meters (7) on the lower surface of each side plate (61) is not less than three.

7. A mine heavy truck weighing and charging gate according to claim 1, characterized in that: The width of the feeding sleeve (3) is at least 1 m, and the width of the bottom end of the positioning feeding pipe (3) is not less than 30 cm.

8. A mine heavy truck weighing and charging gate according to claim 1, characterized in that: The length of a row of the feeding sleeves (3) is at least 2 m longer than the length of the loading box of a heavy mining truck.

9. A mine heavy truck weighing and charging gate according to claim 1, characterized in that: The lifting height of the feeding sleeve (3) is not less than 1.5 m. After the positioning feeding pipe (41) is lowered, it should be higher than the height of the box opening of the loading box of the mining heavy truck. A piece of dustproof rubber (411) extending downward is fixed to each of the four outer walls at the bottom end of the positioning feeding pipe (41).

Images