Bottom side dumping type mine car

Abstract

The utility model relates to the technical field of mining equipment, and discloses a bottom side dumping type mine car, which comprises a carriage and a frame, the carriage is connected with the frame through a hinge, two sides of the frame are respectively provided with a connecting device consisting of a front collision head and a rear collision head, the front collision head is connected with the frame through a buffer, and two sides of the bottom of the frame are rotatably provided with wheel shafts; a rib plate is arranged between the front collision head and the frame, a cavity is formed by the rib plate, the buffer comprises a pull rod arranged in the cavity, the right end of the pull rod is sequentially sleeved with a buffer rubber block and a buffer rubber block pressing plate and connected with a slotted nut, the right side of the rib plate wraps the buffer rubber block pressing plate, and a buffer spring is arranged on the right side of the pull rod. The pull rod is in sliding connection with the front collision head. Traction, collision impact and vibration of the mine car are reduced through the buffering device, safe connection between mine cars is achieved through the connecting plug pin and the single-loop chain which pass through the coal mine safety mark, and the mine car and personal safety are protected.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and in particular to a bottom-side unloading mining car. Background Technology

[0002] Bottom-side unloading mine cars are used in conjunction with bottom-side unloading stations. The mine cars open automatically from the bottom or to the side via the station's frame. This system offers high unloading efficiency and is suitable for horizontal tunnel transportation in metallurgical mines, as well as for transporting other minerals or waste rock.

[0003] However, existing mining cars have the following problems: the connection between mining cars is not stable, and the car body, frame and other components are easily damaged in the event of a collision; the impact force when mining cars collide is large, there is a lack of effective buffering and isolation measures, and the axles are easily damaged due to uneven force during the collision.

[0004] Therefore, those skilled in the art urgently need to develop a bottom-side unloading mining car. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bottom-side unloading mine car.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bottom-discharge mining car, comprising a car body and a frame, wherein the car body and the frame are connected by a hinge, the hinge being located on the rear side of the frame, and connecting devices are provided on both sides of the frame, the connecting devices consisting of a front bumper and a rear bumper, the front bumper and the rear bumper being connected to the left and right sides of the frame respectively, the front bumper being connected to the frame by a buffer, and axles being rotatably provided on both sides of the bottom of the frame, with a support plate provided on the axle, the support plate being fixedly connected to the frame;

[0007] A stiffener is provided between the front bumper and the frame, forming a cavity. The buffer includes a pull rod disposed in the cavity. A buffer rubber block and a buffer rubber block pressure plate are sequentially sleeved on the right end of the pull rod and connected to a slotted nut. The right side of the stiffener wraps around the buffer rubber block pressure plate. A buffer spring is provided on the right side of the pull rod. The pull rod is slidably connected to the front bumper.

[0008] Preferably, the support plate includes two inclined side plates forming an inverted V-shape, and an axle sleeve is fitted around the outside of the wheel axle. The wheel axle sleeve is connected to the two side plates by a support spring.

[0009] Preferably, the rear bumper is also connected to a pull rod, and the pull rods on both sides are connected to a single-ring chain via pins.

[0010] Preferably, the bottom center of the frame is provided with an unloading wheel, the unloading wheel is provided with a support plate rotatably connected to it, and a channel is opened in the middle of the frame, through which the support plate passes and is connected to the bottom of the carriage.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, a buffer device is used to reduce the traction, collision impact and vibration of the mine car, and a connecting pin with coal mine safety signs and a single-ring chain are used to achieve a safe connection between the mine car and personnel, thus protecting the mine car and personnel safety. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model;

[0014] Figure 2 This is a side view of the structure of this utility model;

[0015] Figure 3 This is a top view of the structure of this utility model;

[0016] Figure 4 for Figure 1 Sectional view of the structure at point A in the middle;

[0017] Figure 5 This is a partial sectional view of the pull rod described in this utility model;

[0018] Figure 6 This is a front view of the pull rod described in this utility model;

[0019] Figure 7 This is a front view of the buffer rubber block described in this utility model;

[0020] Figure 8 This is a side sectional view of the buffer rubber block described in this utility model.

[0021] In the diagram: 1-Carriage; 2-Frame; 3-Front bumper; 4-Rear bumper; 5-Buffer; 6-Tie rod; 7-Pin; 8-Single link chain; 9-Unloading wheel; 10-Panel; 11-Support spring; 12-Support plate; 13-Axle; 14-Buffer rubber block; 15-Slotted nut; 16-Firming plate; 17-Buffer rubber block pressure plate; 18-Buffer spring. Detailed Implementation

[0022] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figures 1-8 This utility model provides an embodiment: a bottom-discharge mine car, including a car body 1 and a frame 2. The car body 1 and the frame 2 are connected by a hinge. The hinge is located on the rear side of the frame 2. Both sides of the frame 2 are provided with connecting devices. The connecting devices are composed of a front bumper 3 and a rear bumper 4. The front bumper 3 and the rear bumper 4 are respectively connected to the left and right sides of the frame 2. The front bumper 3 is connected to the frame 2 through a buffer 5. The bottom sides of the frame 2 are rotatably provided with axles 13. The axles 13 are provided with support plates 12. The support plates 12 are fixedly connected to the frame 2.

[0026] A stiffener 16 is provided between the front bumper 3 and the frame 2, forming a cavity. The buffer 5 includes a pull rod 6 set in the cavity. The left end of the pull rod 6 has a larger cross-section than the right end. The right end of the pull rod 6 is fitted with a buffer rubber block 14 and a buffer rubber block pressure plate 17 in sequence and connected to a slotted nut 15. The right side of the stiffener 16 wraps around the buffer rubber block pressure plate 17. A buffer spring 18 is provided on the right side of the pull rod 6. The pull rod 6 is slidably connected to the front bumper 3.

[0027] The main function of the buffer device is to reduce the traction, collision impact and vibration of the mine car. It is equipped with a connecting pin through the coal mine safety sign and a single-ring chain to achieve a safe connection between the mine car and personnel, thus protecting the mine car and personnel.

[0028] The buffer rubber block 14 consists of three 34mm thick rubber blocks with a strength limit of not less than 280kg / cm2 and a Shore hardness of 58-65. It plays a crucial role in buffering, preventing collisions, and isolating the vehicles in the buffer. When mine cars collide, the buffer rubber not only acts as a buffer but also as an isolator, thus providing good collision protection. It also features a simple structure, convenient installation and use, and low cost.

[0029] The front bumper 3 and the rear bumper 4 are welded to both ends of the car body, forming an integral whole with the car body. This effectively strengthens the car body, improves its impact resistance, and protects the internal structures such as the buffer head and buffer rubber blocks, ensuring the stability and durability of the buffer device.

[0030] The working principle of a buffer can be simply summarized as three steps: “absorption-dispersion-release”.

[0031] 1. Absorption: When an external impact force is applied to the buffer device, the tie rod (buffer head) and the buffer rubber first come into contact and absorb part of the impact force. The material can deform under stress, thereby slowing down the impact velocity.

[0032] 2. Dispersion: Subsequently, the cushioning rubber begins to function, further dispersing the remaining impact force and converting some of its energy into stored elastic potential energy. This step effectively reduces the impact force transmitted to subsequent equipment.

[0033] 3. Release: Over time, the cushioning rubber gradually releases the stored elastic potential energy, allowing the cushioning device to return to its original state and prepare for the next impact.

[0034] Buffer devices play a crucial role in the use of mining cars through this working principle. They effectively reduce the impact and vibration generated during the operation of the mining cars, thereby extending the service life of the mining cars and improving the safety of use.

[0035] Furthermore, the support plate 12 includes two inclined side plates forming an inverted V-shape, and the axle 13 is fitted with an axle sleeve, which is connected to the two side plates by a support spring 11.

[0036] The inclined side plate, together with the support spring 11, can achieve multi-directional cushioning of the wheel axle 13.

[0037] The rear bumper 4 is also connected to a pull rod 6, and the pull rods 6 on both sides are connected to the single-ring chain 8 through pins 7.

[0038] Tie rod 6 is made of 45# steel and heat treated. It is installed at both ends of the mine car body and serves as a connecting beam for the mine car. It is equipped with connecting pins that pass through the coal mine safety signs and a single-ring chain to connect the mine cars. When the mine car collides, it is used to absorb the impact and prevent direct impact on the car body or chassis. It can protect the car body, chassis, wheel axles and other components.

[0039] Furthermore, an unloading wheel 9 is provided at the bottom center of the frame 2, and a tray 10 is provided on the unloading wheel 9 and rotatedly connected thereto. A channel is opened at the center of the frame 2, and the tray 10 passes through the channel and connects to the bottom of the carriage 1.

[0040] When a mine car enters the unloading station, the unloading wheel will contact the fixed track (or guide curved track) of the unloading station, becoming the fulcrum for the mine car to rotate around it, allowing the car body to tilt, thereby completing the unloading.

[0041] The hinge between the carriage 1 and the frame 2 is equipped with a pin, a hexagonal bolt, a spring washer, and a shaft end retaining ring; the support plate 10 and the support seat plate 12 are connected to the frame 2 by hexagonal bolts and spring washers; the front bumper 3 and the rear bumper 4 are connected to the frame by bolts.

[0042] The working principle of this utility model is as follows: The mine cars are connected to each other via tie rods, matching connecting pins, and single-ring chains. The tie rods withstand collision impacts to protect the car body, frame, and other components. The front and rear bumpers at both ends of the car body form an integral part with the car body, enhancing its strength and impact resistance, while also protecting internal buffer rubber blocks and other structures. When mine cars collide, the buffer rubber blocks play a crucial role. When the mine car enters the unloading station, the unloading wheels contact the fixed rails or guide curved rails, acting as fulcrums to tilt the car body and complete the unloading operation.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bottom-side unloading mine car, comprising a car body (1) and a frame (2), characterized in that: The carriage (1) and the frame (2) are connected by a hinge. The hinge is located on the rear side of the frame (2). Both sides of the frame (2) are provided with connecting devices. The connecting devices consist of a front bumper (3) and a rear bumper (4). The front bumper (3) and the rear bumper (4) are respectively connected to the left and right sides of the frame (2). The front bumper (3) is connected to the frame (2) through a buffer (5). The bottom sides of the frame (2) are provided with axles (13). The axles (13) are provided with support plates (12). The support plates (12) are fixedly connected to the frame (2). A stiffener (16) is provided between the front bumper (3) and the frame (2). The stiffener (16) forms a cavity. The buffer (5) includes a pull rod (6) set in the cavity. The right end of the pull rod (6) is fitted with a buffer rubber block (14) and a buffer rubber block pressure plate (17) and connected to a slotted nut (15). The right side of the stiffener (16) wraps around the buffer rubber block pressure plate (17). A buffer spring (18) is provided on the right side of the pull rod (6). The pull rod (6) is slidably connected to the front bumper (3).

2. A bottom-side unloading mine car according to claim 1, characterized in that: The support plate (12) includes two inclined side plates forming an inverted V-shape. The axle (13) is fitted with an axle sleeve, which is connected to the two side plates by a support spring (11).

3. A bottom-side unloading mine car according to claim 1, characterized in that: The rear bumper (4) is also connected to a pull rod (6), and the pull rods (6) on both sides are connected to the single-ring chain (8) through pins (7).

4. A bottom-side unloading mine car according to claim 1, characterized in that: The bottom center of the frame (2) is provided with an unloading wheel (9), and the unloading wheel (9) is provided with a tray (10) rotatably connected to it. A channel is opened in the middle of the frame (2), and the tray (10) passes through the channel and is connected to the bottom of the carriage (1).

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