Improved structure of core plate of bottom-dump mine car and bottom-dump mine car
By adding trapezoidal pressure strips to the core plate of the mine car, the problems of rotation and wear of the mine car bogie were solved, enabling safe and reliable transportation and efficient repair of the mine car, and reducing the risk of failure and handling costs.
Patent Information
- Application Number
- CN202520700785.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-15
AI Technical Summary
The existing bottom-discharge mine car core plate structure causes the bogie to rotate easily during the mine car's operation. After long-term use, the grooves wear out severely, making repair difficult and posing a risk of jamming and derailment, which increases the risk of failure and handling costs.
Add at least two trapezoidal pressure strips to the core plate of the mine car. Through the cooperation of the trapezoidal pressure strips and the square-headed screw, ensure that the square-headed screw slides smoothly in the groove, control the rotation angle of the bogie, and directly replace the trapezoidal pressure strips when worn to reduce the difficulty of repair.
Effective control of the rotation angle of mining cars when turning prevents them from derailing and getting stuck, reduces the risk of failure and the difficulty of repair, improves transportation efficiency and safety, and reduces material waste.
Smart Images
Figure CN223949145U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of mine car with bottom unloading type, concretely relates to an improved structure of the core disc of the mine car with bottom unloading type and the mine car with bottom unloading type. BACKGROUND
[0002] The mine car is a kind of heavy transport tool, is widely used in mining and industrial field, is mainly used for transporting ore, coal, building material and other materials.It has the characteristics of high bearing capacity, stability and wear resistance, can quickly and efficiently transport a large amount of materials, promotes the development of mining, energy production and construction engineering and other industries.The mine car plays a key role in mining, coal, building material and industrial raw material transportation, provides reliable logistics solution for resource exploitation and industrial production.
[0003] At present, the unloading station form commonly used in large mines has curved rail side unloading station, bottom side unloading station and bottom unloading station.The current mine car unloading generally does not have driving device, mainly relies on the weight of the ore carried by the mine car and the self weight of the mine car chassis, so that the mine car is subjected to a horizontal thrust, pushes the train to continue to advance, the mine car chassis automatically opens downward along the curved rail by its self weight and the weight of the ore carried, the unloading wheel at the rear end of the car chassis rolls downward along the curved rail, the bottom door of the car gradually opens, the mine car passes through the center point of the unloading station, the ore is completely unloaded, the unloading wheel rolls over the curved point and gradually upwards, the frame and the car body gradually close, and the bottom door is closed.
[0004] The mine car core disc is an indispensable component of the mine car, which supports the wheels and carries the materials.Meanwhile, the mine car core disc is also a key component of the mine car steering system, which is used to control the direction of the wheels and realize the turning function, and it ensures the sensitivity and reliability of the steering system, and can quickly adjust the wheel angle when needed to ensure the smooth passing of the mine car through the turn.
[0005] As Figures 1-7As shown, the existing bottom dump mine car includes a mine car body 1, a mine car bottom 1-2, a mine car core disc 4, a mine car bogie 1-1, an unloading roller set 2, and an unloading curve rail 3. The unloading roller set 2 is arranged on both sides of the mine car body 1, and one side of the bottom of the mine car body 1 is rotatably connected with the mine car bottom 1-2. The mine car core disc 4 includes an upper core disc 4-1, a lower core disc 4-2, and a square head screw rod 4-3 which penetrates through the upper core disc 4-1 and the lower core disc 4-2 and is detachably fixed by cooperating with a hexagonal nut 4-4. A groove is formed on the upper surface of the upper core disc 4-1 at the circumference of the square head screw rod 4-3. The upper core disc 4-1 is connected with the mine car bottom 1-2 by a plurality of first connecting bolts 5, and the lower core disc 4-2 is connected with the mine car bogie 1-1 by a plurality of second connecting bolts 6. Wheels are arranged on both sides of the mine car bogie 1-1. When the bottom dump mine car runs to the unloading point by traction, the unloading roller set 2 supports the mine car body 1 to roll forward, and the mine car bottom 1-2 rolls along the unloading curve rail 3 to slowly open the unloading. At this time, the mine car bogie 1-1, the lower core disc 4-2, the square head screw rod 4-3 and the hexagonal nut 4-4 will make the square head screw rod 4-3 fall into the groove of the upper core disc 4-1 due to gravity, so as to ensure that the mine car bogie 1-1 remains fixed during unloading, and ensures that the mine car bogie 1-1 returns to the original position after unloading. The above structure has the following problems:
[0006] (1) Due to the structure of the mine car core disc 4, the square head of the square head screw rod 4-3 is higher than the groove of the upper core disc 4-1 during normal driving of the mine car. When the mine car passes through a curve, the rotation angle of the mine car core disc cannot be controlled, and the mine car bogie 1-1 is easily rotated by 360 degrees, which causes the mine car to derail.
[0007] (2) Due to the structure of the mine car core disc 4, the groove of the upper core disc 4-1 will be continuously impacted by the square head screw rod 4-3 after a long time of use, which causes steps to appear in the groove of the upper core disc 4-1. When unloading, the square head screw rod 4-3 cannot normally fall into the groove of the upper core disc 4-1 due to gravity when the mine car bogie 1-1, the lower core disc 4-2, the square head screw rod 4-3 and the hexagonal nut 4-4 are downwardly rotated. When a little resistance is encountered, the mine car bogie 1-1 will be rotated at a large angle and will be stuck with the unloading curve rail 3, which has high risk and difficulty in troubleshooting, and the cost of destructive treatment of the mine car is also high.
[0008] (3) Due to the structure of the mine car core disc, the square head is in contact with the upper core disc for a long time, which causes high difficulty in repairing the wear of the upper core disc, the repair strength cannot reach the expected effect, the core disc as a whole is replaced, and there is a waste phenomenon.
[0009] Therefore, in order to solve these problems, it is necessary to optimize the design of the mandrel, improve the core disc structure, ensure that the rotation gap size is appropriate, so that the reasonable gap can ensure that the turning radius meets the requirements; in addition, during the unloading process, the bogie should be avoided to be stuck or derailed, so as to reduce the failure risk and the handling cost of the mine car, thereby improving the transportation efficiency and safety of the mine car. Utility model content
[0010] The utility model provides an improved structure of bottom discharge mine car core disc and bottom discharge mine car, through the improvement of mine car core disc structure, meet the demand of rotation angle and automatic reset in the operation process of mine car.
[0011] The technical scheme for solving the technical problems of the utility model is as follows:
[0012] According to one aspect of the utility model, an improved structure of bottom discharge mine car core disc is provided, the mine car core disc includes the upper core disc and the lower core disc that are matched and arranged up and down, the upper core disc and the lower core disc are connected movably through the common penetration of square head screw rod and the cooperation of hexagon nut in the center, at least two trapezoidal pressing strips are detachably arranged on the upper surface of the upper core disc, and the inclined edge of the trapezoidal pressing strip corresponds to the lower mouth of the square head of the square head screw rod.
[0013] Further, the at least two trapezoidal pressing strips are evenly arranged on the upper surface of the upper core disc.
[0014] Further, the trapezoidal pressing strip and the upper surface of the upper core disc are detachably connected and fixed through a plurality of countersunk head bolts.
[0015] Further, the hexagon nut is welded and fixed with the lower surface of the lower core disc.
[0016] According to another aspect of the utility model, a bottom discharge mine car provided with the improved structure is provided, the bottom discharge mine car includes a mine car box body and a mine car bottom rotatably connected with one side of the bottom of the mine car box body, unloading carrier roller groups are arranged on the two sides of the mine car box body respectively, a mine car bogie is arranged below the mine car bottom, and the mine car bogie is detachably connected with the mine car bottom through the improved structure in the above technical scheme.
[0017] Further, the upper core disc of the improved structure is detachably connected with the mine car bottom through a plurality of first connecting bolts, and the lower core disc is detachably connected with the mine car bogie through a plurality of second connecting bolts.
[0018] Compared with the prior art, the improved structure of bottom discharge mine car core disc and the bottom discharge mine car have the following advantages:
[0019] (1) The utility model discloses simple structure, reasonable, and convenient to make and implement can effectively accelerate the old car core dish repair strength, reduce the repair time, reduce the material cost, greatly guarantee the production time.
[0020] (2) The utility model discloses at least two trapezoidal pressure strips are added on the upper core dish, when the mine car runs, the angle of the square head screw rod can be adjusted reasonably, the square head lower mouth position of the square head screw rod is lower than the groove of the upper core dish in the normal driving process of the mine car, the rotation angle of the mine car core dish can be controlled when passing the curve, the bogie 360-degree rotation is not easy to occur, and the derailment accident is effectively avoided.
[0021] (3) The utility model discloses at least two trapezoidal pressure strips are added on the upper core dish, the angle can be controlled when the mine car runs, and furthermore the inclination angle of the trapezoidal pressure strip can effectively slide the square head screw rod into the groove of the upper core dish, and the rotation of the bogie of the mine car and the stuck situation caused by unloading the curve are effectively avoided.
[0022] (4) The utility model discloses at least two trapezoidal pressure strips are added on the upper core dish, after the trapezoidal pressure strip is abraded in the long-time running process, directly replacing the trapezoidal pressure strip can complete the repair of the mine car core dish, greatly reduce the repair difficulty, improve the repair efficiency, and reduce the waste. DRAWINGS
[0023] Figure 1 It is the unloading principle schematic diagram of the existing bottom unloading mine car;
[0024] Figure 2 It is the main schematic diagram of the existing bottom unloading mine car;
[0025] Figure 3 It is the left schematic diagram of the existing bottom unloading mine car;
[0026] Figure 4 It is the mine car core dish when the existing bottom unloading mine car is normal when walking;
[0027] Figure 5 It is the mine car core dish when the existing bottom unloading mine car is opened;
[0028] Figure 6 It is the main schematic diagram of the existing mine car core dish;
[0029] Figure 7 It is the left schematic diagram of the existing mine car core dish;
[0030] Figure 8 It is the main schematic diagram of the mine car core dish after the utility model discloses;
[0031] Figure 9 It is the left schematic diagram of the mine car core dish after the utility model discloses;
[0032] Figure 10Is the core disc of the mine car of the utility model is shown in the figure when the mine car core disc is normal after transformation;
[0033] Figure 11 Is the core disc of the mine car of the utility model is shown in the figure when the mine car core disc is normal after transformation;
[0034] In the figure: 1, mine car box body; 1-2, mine car bottom; 4, mine car core disc; 4-1, upper core disc; 4-2, lower core disc; 4-3, square head screw; 4-4, hexagonal nut; 4-1-2, countersunk bolt; 4-1-1, trapezoidal pressing strip; 1-1, mine car bogie; 2, unloading carrier wheel set; 3, unloading curve rail; 5, first connecting bolt; 6, second connecting bolt. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning by those skilled in the art to which the present disclosure belongs. The "up", "down", "left", "right", "front", "back" and the like used in the patent application description and claims of the present disclosure are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship also changes accordingly. The utility model is not detailed, which is the known technology of those skilled in the art.
[0036] Embodiment 1:
[0037] As shown in the drawings, the utility model provides an improved structure of bottom discharge type mine car core disc, the mine car core disc 4 includes the upper core disc 4-1 and the lower core disc 4-2 that are matched and set up up and down, the upper core disc 4-1 and the lower core disc 4-2 center place are connected through the square head screw 4-3 of common penetration and cooperate the hexagonal nut 4-4 activity, the upper core disc 4-1 is provided with recess along circumference at square head screw 4-3 position, its improvement lies in, the upper surface of the upper core disc 4-1 is detachably provided with two trapezoidal pressing strips 4-1-1, the inclined edge of trapezoidal pressing strip 4-1-1 corresponds with the square head lower mouth of square head screw 4-3 and transitions with recess slot, that is, the depth of recess is increased, when applied to mine car, when the mine car is normal, the top of recess is higher than the bottom of square head lower mouth.
[0038] As a preferred embodiment, two trapezoidal pressing strips 4-1-1 are evenly arranged on the upper surface of the upper core disc 4-1.
[0039] As a preferred embodiment, the trapezoidal pressing strip 4-1-1 is detachably connected and fixed with the upper surface of the upper core disc 4-1 through a plurality of countersunk head bolts 4-1-2.
[0040] As a preferred embodiment, the hexagonal nut 4-4 is welded and fixed with the lower surface of the lower core disc 4-2, and the rotation angle of the square head screw rod 4-3 needs to be adjusted before welding.
[0041] Embodiment 2
[0042] The utility model provides a kind of installed bottom dump mine car, bottom dump mine car includes mine car box body 1 and with the rotation connection of mine car box body 1 bottom one side mine car bottom 1-2, mine car box body 1 both sides are provided with unloading roller set 3 respectively, mine car bottom 1-2 below is provided with mine car bogie 1-1, mine car bogie 1-1 is detachably connected with the improved structure in embodiment 1 and mine car bottom 1-2.Specifically, the upper core disc 4-1 of improved structure is detachably connected with mine car bottom 1-2 by a plurality of first connecting bolts 5, and the lower core disc 4-2 is detachably connected with mine car bogie 1-1 by a plurality of second connecting bolts 6.When bottom dump mine car is installed with this improved mine car core disc, its use effect is as follows:
[0043] 1, after increasing two trapezoidal pressing strips 4-1-1 on the upper core disc of mine car, the rotation angle of square head screw rod 4-3 can be reasonably adjusted, and the square head lower opening position of square head screw rod 4-3 is lower than the recess of upper core disc 4-1 in normal driving process of mine car, the rotation angle of mine car core disc can be controlled when passing through curve, and mine car bogie 1-1 is not easy to rotate 360 degrees, so that the derailment accident is effectively avoided.
[0044] 2, after increasing two trapezoidal pressing strips 4-1-1 on the upper core disc of mine car, the rotation angle is controlled, and further, the inclination of trapezoidal pressing strip 4-1-1 effectively slides square head screw rod 4-3 into the recess of upper core disc 4-1, so that the rotation of mine car bogie 1-1 and the jamming caused by unloading curve 3 are effectively avoided.
[0045] 3, after increasing 2 trapezoidal pressing strips 4-1-1 on the upper core disc of mine car, trapezoidal pressing strip 4-1-1 will be abraded in long-time running process, and direct replacement of trapezoidal pressing strip 4-1-1 can complete core disc repair, greatly reduce repair difficulty, improve maintenance efficiency and reduce waste.
[0046] In summary, the utility model mine car core disc has simple structure, convenient maintenance, ensures the rotation angle of bogie and ensures the safe and reliable automatic return of bogie, and has outstanding substantial characteristics and significant progress in practicality and safety compared with prior art.
Claims
1. An improved structure of a bottom dump mine car core disc, the mine car core disc (4) comprises an upper core disc (4-1) and a lower core disc (4-2) which are matched and arranged in an up-down mode, the upper core disc (4-1) and the lower core disc (4-2) are movably connected at the center through a common penetrating square head screw rod (4-3) and a matched hexagonal nut (4-4), characterized in that, The upper core disc (4-1) is detachably provided with at least two trapezoidal pressing strips (4-1-1) on the upper surface, and the inclined edge of the trapezoidal pressing strip (4-1-1) corresponds to the square head lower opening of the square head screw rod (4-3).
2. The improvement in a bottom dump car pan core as defined in claim 1 wherein, The at least two trapezoidal pressing strips (4-1-1) are evenly arranged on the upper surface of the upper core disc (4-1).
3. The improvement in a bottom dump car pan as defined in claim 1 wherein, The trapezoidal pressing strip (4-1-1) and the upper surface of the upper core disc (4-1) are detachably connected and fixed by a plurality of countersunk head bolts (4-1-2).
4. The improvement in a bottom dump car pan core as defined in claim 1 wherein, The hexagonal nut (4-4) is welded and fixed to the lower surface of the lower core disc (4-2).
5. A bottom dump mine car provided with the improvement of any one of claims 1-4, the bottom dump mine car comprising a mine car body (1) and a mine car bottom (1-2) rotatably connected to one side of the bottom of the mine car body (1), both sides of the mine car body (1) being provided with unloading idler sets (3), and a mine car bogie (1-1) being arranged below the mine car bottom (1-2), characterized in that, The mine car bogie (1-1) is detachably connected to the mine car bottom (1-2) by the improved structure of any one of claims 1-4.
6. The hopper car defined in claim 5, wherein The upper core disc (4-1) of the improved structure is detachably connected to the mine car bottom (1-2) by a plurality of first connecting bolts (5), and the lower core disc (4-2) is detachably connected to the mine car bogie (1-1) by a plurality of second connecting bolts (6).