Mine car and supporting device capable of self-braking when overspeeding in inclined shaft lane

Abstract

The invention discloses a mine car capable of self-braking when a train of vehicles in an inclined shaft exceeds the speed limit and a matching device. The mine car comprises a mine car body consisting of a car body, a chassis, front and rear axles and four wheels. The invention is characterized in that one of the front and rear axles can rotate relative to the chassis, and at least one of the two wheels on the axle rotates together with the car along with the axle; a centrifugal wheel mechanism is fixed at the middle position of the axle; the centrifugal wheel mechanism is provided with a half-circle groove on the wheel circumference of the centrifugal wheel, and a centrifugal hook is hinged in the groove; the hook head of the centrifugal hook is hooked on a safety pin, and when the mine car exceeds the speed limit, the centrifugal hook is pulled off by the centrifugal hook under the action of a certain centrifugal force, so that the centrifugal hook is thrown out of the groove; and the centrifugal hook is hooked on a steel sleeve of a track bottom plate to stop the mine car from running.

Description

Technical Field

[0001] The invention relates to a mine car for coal mine inclined shaft transportation, belonging to the technical field of coal mine mechanical equipment. Background Art

[0002] The inclined shafts and lanes mentioned in this application are a general term for the inclined shafts from the mine surface to the underground and the transportation lanes up and down the mountain in the underground mining area. Mine car rail transportation is a transportation method widely used in the inclined shafts and lanes of coal mines and other mines. Its transportation form is to transport the mine car group (string car) by pulling the winch installed above the inclined shaft. The existing general mine car is mainly composed of a carriage, a chassis, front and rear axles and four wheels. The axle is fixed on the chassis, and the wheels are installed on the axle through bearings. The wheels rotate on the axle when traveling. If the rope, chain or pin are broken during the operation of the mine car, it will cause the mine car or the mine car group to run away, resulting in safety accidents.

[0003] In order to solve the above problems, the coal mine safety regulations stipulate that anti-runaway device should be installed in the inclined shaft. At present, the commonly used anti-runaway device usually installs various devices such as car blocking nets in the mine. Once the stall situation is found, the car blocking net is lowered through the sensing device to block the mine car. The shortcomings of this passive anti-runaway device are: the interception device is heavy, and it is inconvenient to install, transport and maintain on site, making it difficult to popularize and use; the interception device can usually only be used once, and a new one needs to be reinstalled, which not only wastes materials, but also destroys the continuity of mine production, and it is time-consuming and laborious to deal with accidents; once the sensing device fails or fails during use, the interception device loses its function. Summary of the invention

[0004] In view of the above problems, the present invention provides a purely mechanical mine car and its supporting equipment which can self-brake when the train in the inclined shaft exceeds the speed limit, and can actively brake when a runaway car accident is caused by rope breakage, unhooking, etc.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is a mine car and supporting device that can self-brake when the vehicles in a series of inclined shafts and lanes exceed the speed limit, including a mine car body composed of a car body, a chassis, front and rear axles and four wheels, characterized in that one of the front and rear axles is hingedly mounted on the chassis through a bearing and can rotate relative to the chassis, at least one of the two wheels on the axle is fixedly connected to the axle so that the car can rotate with the axle, and the other is hingedly connected to the axle through a bearing and can rotate around the axle; a centrifugal wheel mechanism is fixed at the middle position of the axle; the centrifugal wheel mechanism is A half-circle groove is provided on the circumference of the centrifugal wheel, and a centrifugal hook is hinged in the groove; the centrifugal hook is hinged by a hook head and a hook body, and the shape after hinged is consistent with the groove, the tail of the hook body is hinged to the rear end of the groove by a pin shaft, and the hook head is hooked on the safety pin at the front end of the groove, so that the centrifugal hook is hidden in the groove; the destructive strength of the safety pin should ensure the following conditions: when the mine car is running at normal speed, it is guaranteed not to be pulled off by the centrifugal force of the hook head, so that the centrifugal hook is not thrown out; when the mine car is running at overspeed, it is guaranteed to be pulled off by the centrifugal hook under a certain centrifugal force, so that the centrifugal hook is thrown out of the groove;

[0006] The present application also includes a matching device; the matching device is a steel sleeve firmly buried on the bottom plate between the two tracks of the inclined shaft; the steel sleeve is arranged every 2-4 meters; when the centrifugal hook is thrown out, it hooks on the steel sleeve, causing the mine car to stop running.

[0007] The working principle and positive effect of the present application are that a purely mechanical structure is adopted, and once the winch traction wire rope breaks or becomes unhooked and runs away, the centrifugal hook is thrown out and hooked on the steel sleeve under the action of centrifugal force, thereby realizing self-braking and stopping, and there will be no problem of malfunction or failure of the sensing device as in the passive interception device; by adopting self-braking, there is no need to install an interception device separately, thus avoiding the problems of inconvenience in installation, transportation and maintenance, as well as the problem of one-time damage and waste of materials, and there is no need to reinstall a new one, and it is only necessary to restore the centrifugal hook of the centrifugal wheel to its original state and replace the new safety pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a front view of an embodiment of the present invention;

[0009] Figure 2 yes Figure 1 A side view of the centrifugal wheel mechanism;

[0010] Figure 3 This is a diagram of the running status of the inclined shaft and laneway train, which shows the setting of the steel sleeve;

[0011] Figure 4 It is a three-dimensional schematic diagram of the steel bar sleeve setting.

[0012] In the figure: 1. Carriage; 2. Chassis; 3. Rear axle; 4. Left wheel; 5. Left bearing; 6. Pin; 7. Centrifugal wheel; 8. Hook body; 9. Pin; 10. Right bearing; 11. Right wheel; 12. Wheel bearing; 13. Hook head; 14. Safety pin; 15. Steel sleeve; 16. Track. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1 As shown, an overspeed self-braking mine car for inclined shaft and lane transport and its supporting parts include a mine car body consisting of a car body 1, a chassis 2, front and rear axles (the rear axle 3 is shown in the figure) and four wheels (the left wheel 4 and the right wheel 11 of the axle 3 are shown in the figure); wherein the axle 3 is hingedly mounted on the chassis 2 through a left bearing 5 and a right bearing 10, so that the rear axle 3 and the chassis 2 can rotate relative to each other, the two wheels on the rear axle 3, the left wheel 4 is fixedly connected to the rear axle 3 and can rotate with the axle 3, and the right wheel 11 is hinged to the rear axle 3 through a wheel bearing 12 and can rotate around the axis; a centrifugal wheel mechanism is fixed at the middle position of the rear axle 3 through a pin 9; the structure of the centrifugal wheel mechanism is as shown in FIG. Figure 2 As shown, a half-circle groove is provided on the circumference of the centrifugal wheel 7, and a centrifugal hook is hinged in the groove; the centrifugal hook is hinged by a hook head 13 and a hook body 8, and the shape after hinged is consistent with the groove, the tail of the hook body 8 is hinged to one end of the groove by a pin 6, and the hook head 13 is hooked on the safety pin 14 so that the centrifugal hook is hidden in the groove; the destructive strength of the safety pin 14 should ensure the following conditions: when the mine car is running normally, the hook head 13 can be hung and not be pulled off, ensuring that the centrifugal hook is not thrown out, and when the mine car is running at overspeed, it is guaranteed that it can be pulled off by the centrifugal hook under a certain centrifugal force, so that the centrifugal hook is thrown out of the groove.

[0015] like Figure 3 Figure 4 As shown, the present application also includes a matching device; the matching device is a steel sleeve 15 firmly buried on the bottom plate between the two tracks 16 of the inclined shaft; the steel sleeve 15 is arranged every 2-4 meters; when the centrifugal hook is thrown out, the hook head 13 is hooked on the steel sleeve 15, causing the mine car to stop running.

Claims

1. A mine car and its supporting device capable of self-braking when a train in an inclined shaft exceeds the speed limit, comprising a mine car body consisting of a carriage, a chassis, a front axle, a rear axle and four wheels, characterized in that: The rear axle is hingedly mounted on the chassis through a left bearing and a right bearing, so that the rear axle and the chassis rotate relative to each other. The left wheel on the rear axle is fixedly connected to the rear axle and can rotate with the axle, and the right wheel is hingedly connected to the rear axle through a wheel bearing and can rotate around the axis. A centrifugal wheel mechanism is fixed at the middle position of the rear axle; the centrifugal wheel mechanism is provided with a half-circle groove on the circumference of the centrifugal wheel, and a centrifugal hook is hinged in the groove; the centrifugal hook is hinged by a hook head and a hook body, the tail of the hook body is hinged to the rear end of the groove by a pin shaft, and the hook head is hooked on the safety pin at the front end of the groove; the destructive strength of the safety pin should ensure the following conditions: when the mine car runs at normal speed, it is guaranteed not to be pulled off by the centrifugal force of the hook head; when the mine car is running at overspeed, it is guaranteed to be pulled off by the centrifugal hook under a certain centrifugal force, so that the centrifugal hook is thrown out of the groove; It also includes a matching device; the matching device is a steel sleeve firmly buried on the bottom plate between the two tracks of the inclined shaft; the steel sleeve is arranged every 2-4 meters; when the centrifugal hook is thrown out, it hooks on the steel sleeve to stop the mine car from running.

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