A mechanical trigger device for anti-falling braking of mine cars towed in inclined shafts

Abstract

The present invention provides a mechanical trigger device for anti-falling braking of a mine car towed in an inclined shaft, which includes a traction arm, a position switch, a vertical rotating shaft, a limit support block, a hinged arm, a gravity block and a connecting rod assembly. The front end of the traction arm is connected to the traction rope of an external traction system, and the rear end is rotatably connected to the front end of the body of the towed mine car. The position switch is installed above the rear end of the traction arm. The gravity block is rotatably hinged to the body of the towed mine car. The vertical rotating shafts are symmetrically arranged on both sides of the middle of the traction arm. A limit support block and a hinged arm are provided on each vertical rotating shaft. The hinged arms on the two vertical rotating shafts are respectively connected to the gravity block through the connecting rod assembly. By setting a braking device different from the disc type brake and a mechanical brake trigger device on the towed vehicle, the present invention can achieve automatic and timely braking when the vehicle body slides and falls on a slope, with high efficiency, smoothness and safety in braking, effectively preventing the risk of vehicle sliding and falling and eliminating potential safety hazards in mine production.

Description

Technical Field

[0001] The present invention relates to mechanical technology, in particular to a mechanical triggering device for a switch, specifically a mechanical triggering device for anti-falling braking of a mine car dragged in an inclined shaft. Background Art

[0002] The towing vehicles used in mines include passenger vehicles and cargo vehicles. Both passenger vehicles and cargo vehicles run on tracks by the traction of a towing rope. Among them, since there are people in the passenger vehicle, it generally has a manually controlled disc brake; while the cargo vehicle is unattended and usually has no brake on its upper part, relying only on the brake of the wire rope drum. When the cargo vehicle runs on flat ground, the braking problem is not serious. However, when it runs on the slope of an inclined shaft, the self-weight of the fully loaded material vehicle is extremely large. Once the towing rope breaks and the material vehicle slides down, it will pose a great safety hazard to the construction site below the slope.

[0003] Regarding the anti-falling measures of the cargo vehicle in the inclined shaft, the existing technology is to add anti-falling braking to the vehicle. The triggering devices of the existing anti-falling braking usually use sensors, and the sensors are affected by the environment or power supply, and there is a low probability of occasional failures. Although the probability of this kind of failure is extremely low, it is still necessary to further avoid it. Summary of the Invention

[0004] Aiming at the problems raised in the background art, the purpose of the present invention is to provide a mechanical triggering device for anti-falling braking of a mine car dragged in an inclined shaft. Through a pure mechanical design, it can automatically trigger the braking device when the vehicle body slides down on the slope of the inclined shaft. Compared with sensors, this device has higher safety, can effectively prevent the risk of vehicle sliding down, and eliminate the potential safety hazards in mine production to the greatest extent.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A mechanical trigger device for anti - falling braking of a mine car dragged in an inclined shaft, comprising a traction arm, a position switch, a vertical rotating shaft, a limit support block, a hinged arm, a gravity block and a connecting rod assembly. The front end of the traction arm is connected to the traction rope of an external traction system, and the rear end is rotatably connected to the front end of the body of the dragged mine car. The position switch is installed above the rear end of the traction arm and is connected to the switch control circuit of the power source device through a circuit, used to control the opening and closing of the power source device, and the power source device drives the braking device to brake. The gravity block is rotatably hinged to the body of the dragged mine car. The vertical rotating shafts are symmetrically arranged on both sides of the middle part of the traction arm. Each vertical rotating shaft is provided with a limit support block and a hinged arm. The hinged arms on the two vertical rotating shafts are respectively connected to the gravity block through a connecting rod assembly. When the vehicle body runs horizontally, the two limit support blocks both support the traction arm. When the vehicle body enters the inclined track, due to the relative rotation of the gravity block, the gravity block drives the vertical rotating shaft to rotate through the connecting rod assembly, rotates the two limit support blocks to the outside of both sides of the traction arm, so that the traction arm loses support. If the traction rope breaks, the rear end of the traction arm rises due to rotation, triggering the position switch of the power source device.

[0007] A horizontal shaft perpendicular to the vehicle running track is provided in the middle of the front end of the vehicle body. The upper end of the gravity block is rotatably hinged to the horizontal shaft, and the rear end of the traction arm is also rotatably hinged to the horizontal shaft.

[0008] The upper and lower ends of the vertical rotating shaft are respectively connected to the front end of the vehicle body through mounting plates. The mounting plates are fixedly connected to the vehicle body, and the mounting plates and the vertical rotating shaft are rotatably connected through a pin shaft.

[0009] The included angle between the axis of the hinged arm and the limit support block is 45 degrees.

[0010] The connecting rod assembly is composed of a cross bar A, a cross bar B, a vertical rod C and a sliding pin. One end of the cross bar A is movably hinged to the hinged arm through a first pin shaft, and the other end is movably hinged to the cross bar B through a second pin shaft. The other end of the cross bar B is fixedly connected to the vertical rod C. A through - slot with closed upper and lower ends is provided on the vertical rod C, and a sliding pin is arranged in the through - slot. One end of the sliding pin is fixedly connected to the gravity block, and the other end is provided with an anti - detachment limit ring fixed as a whole. The first pin shaft and the second pin shaft are parallel to each other, and the second pin shaft is perpendicular to the sliding pin.

[0011] The beneficial effects of the present invention: Through the mechanical braking trigger device designed on the dragged vehicle, when the vehicle body slides and falls on the inclined shaft ramp, automatic and timely braking can be realized. The braking is efficient, stable and safe, can effectively prevent the risk of vehicle sliding and falling, and eliminate the potential safety hazards in mine production to the greatest extent. Description of the Drawings

[0012] Figure 1 It is the top view of the overall structure of the present invention.

[0013] Figure 2 The front view of the brake trigger device when it is on flat ground.

[0014] Figure 3 The front view of the brake trigger device when it is on a slope.

[0015] Figure 4 The top view of the brake trigger device.

[0016] Figure 5 The schematic diagram of the angular relationship between the limit support block on the vertical rotating shaft and the hinge arm.

[0017] Figure 6 The three-dimensional schematic diagram of the connecting rod assembly.

[0018] In the figure, 1 is the vehicle body, 2 is the power source device, 3 is the towing arm, 4 is the towing rope, 7 is the horizontal shaft, 21 is the position switch, 51 is the vertical rotating shaft, 52 is the limit support block, 53 is the gravity block, 54 is the connecting rod assembly, 55 is the mounting plate, 56 is the hinge arm, 541 is the cross bar A, 542 is the cross bar B, 543 is the vertical bar C, 544 is the sliding pin, and 545 is the through groove. Specific embodiments

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the scope of protection of the present invention.

[0020] As Figure 1-6As shown in the figure, a mechanical trigger device for anti-falling braking of a mine car dragged in an inclined shaft includes a traction arm 3, a position switch 21, a vertical rotating shaft 51, a limit support block 52, a hinge arm 56, a gravity block 53 and a connecting rod assembly 54. The front end of the traction arm 3 is connected to the traction rope 4 of an external traction system, and the rear end is rotatably connected to the front end of the body 1 of the dragged mine car. The position switch 21 is installed above the rear end of the traction arm 3, and it is connected to the switch control circuit of the power source device through a circuit, and is used to control the opening and closing of the power source device. The power source device drives the braking device to brake. The gravity block 53 is rotatably hinged to the body 1 of the dragged mine car. The vertical rotating shafts 51 are symmetrically arranged on both sides of the middle of the traction arm 3. Each vertical rotating shaft 51 is provided with a limit support block 52 and a hinge arm 56. The hinge arms 56 on the two vertical rotating shafts 51 are respectively connected to the gravity block 53 through the connecting rod assembly 54. When the body 1 runs horizontally, the two limit support blocks 52 both support the traction arm 3. When the body 1 enters the inclined track, due to the relative rotation of the gravity block 53, the gravity block 53 drives the vertical rotating shaft 51 to rotate through the connecting rod assembly 54, and rotates the two limit support blocks 52 to the outside of both sides of the traction arm 3, so that the traction arm 3 loses support. If the traction rope 4 breaks, the rear end of the traction arm 3 rises due to rotation, triggering the position switch 21 of the power source device.

[0021] In the above structure, the position switch 21 is a well-known technology and is used to start the power source device.

[0022] The operation mechanism of the present invention is as follows:

[0023] When the body 1 runs on flat ground, as Figure 3 、 Figure 4 shown, under the gravity of the gravity block 53, the limit support blocks 52 on the vertical rotating shaft 51 are both located on the lower side of the traction arm 3, supporting the traction arm 3 so that it will not fall, and will not trigger the position switch 21 of the power source device, and the body 1 is normally towed and runs. When the traction rope 4 pulls the body 1 into the slope track, as Figure 5 shown, an inclination angle is generated between the traction arm 3, the body 1 and the ground. The gravity block 53 needs to keep its position unchanged under the action of gravity. Therefore, the gravity block 53 will pull the vertical rotating shaft 51 through the connecting rod assembly 54, and the vertical rotating shaft 51 rotates, so that the limit support block 52 rotates to the outside of the traction arm 3. At this time, the traction arm 3 drives the body 1 to run under the pulling force of the traction rope 4. Once the traction rope 4 breaks, the traction arm 3 has no support, its front end drops, and the rear end rises, triggering the position switch 21, and the power source device is instantly started, so that the brake 62 in the braking device acts simultaneously to implement braking. When the traction rope 4 is reconnected, the power source device is reset through the manual reset switch, the traction rope 4 tightens the traction arm 3, and the position switch 21 is reset, so that the body 1 resumes normal operation.

[0024] In an embodiment of the present invention, a horizontal shaft 7 perpendicular to the vehicle running track is provided in the middle of the front end of the vehicle body 1. The upper end of the gravity block 53 is rotatably hinged to the horizontal shaft 7, and the rear end of the traction arm 3 is also rotatably hinged to the horizontal shaft 7. Specifically, a U-shaped mounting seat body can be provided at the front part of the vehicle body 1 to realize the installation of the horizontal shaft 7, or the two ends of the horizontal shaft 7 can be fixed to the two side walls of the opening groove by providing an opening groove at the front end of the vehicle body.

[0025] In an embodiment of the present invention, the upper and lower ends of the vertical rotating shaft 51 are respectively connected to the front end of the vehicle body 1 through mounting plates 55. The mounting plates 55 are fixedly connected to the vehicle body 1, and the mounting plates 55 and the vertical rotating shaft 51 are rotatably connected through vertical pin shafts. Specifically, a pin hole can be provided at the end of the vertical rotating shaft 51. One end of the vertical pin shaft is fixed on the mounting plate 54, and the other end is inserted into the pin hole at the end of the vertical rotating shaft 51. There is a clearance fit between the pin hole and the vertical pin shaft.

[0026] In an embodiment of the present invention, the included angle between the axis of the articulated arm 56 and the positive projection of the limit support block 52 in the horizontal plane is 45 degrees. Such an angle design can enable the limit support block 52 to have a larger rotation angle, ensuring the smooth realization and release of the limit support.

[0027] In an embodiment of the present invention, the link assembly 54 is composed of a cross bar A541, a cross bar B542, a vertical bar C543, and a sliding pin 544. One end of the cross bar A541 is movably hinged to the articulated arm 56 through a first pin shaft, and the other end is movably hinged to the cross bar B542 through a second pin shaft. The other end of the cross bar B542 is fixedly connected to the vertical bar C543. A vertical through groove 545 with closed upper and lower ends is provided on the vertical bar C543. A sliding pin 544 is provided in the through groove 545. One end of the sliding pin 544 is fixedly connected to the gravity block 53, and the other end is provided with an anti-detachment limit ring fixed as a whole. The first pin shaft and the second pin shaft are parallel to each other, and the second pin shaft is perpendicular to the sliding pin 544. Specifically, the link structure can also be in other forms. Through the link mechanism, the transmission between different components in two mutually perpendicular planes should be realized.

[0028] The parts not detailed in the present invention are prior art.

Claims

1. A mechanical triggering device for anti - falling braking of ore cars towed in inclined shafts, comprising a traction arm (3), a position switch (21), a vertical rotating shaft (51), a limit support block (52), a hinge arm (56), a gravity block (53) and a connecting rod assembly (54). Characterized in that: The front end of the traction arm (3) is connected to the traction rope (4) of an external traction system, and the rear end is rotatably connected to the front end of the body (1) of the towed ore car; the position switch (21) is installed above the rear end of the traction arm (3), and it is connected to the switch control circuit of the power source device through an electric circuit, used to control the opening and closing of the power source device, and the power source device drives the braking device to brake; the gravity block (53) is rotatably hinged to the body (1) of the towed ore car, the vertical rotating shafts (51) are symmetrically arranged on both sides of the middle of the traction arm (3), each vertical rotating shaft (51) is provided with a limit support block (52) and a hinge arm (56), and the hinge arms (56) on the two vertical rotating shafts (51) are respectively connected to the gravity block (53) through the connecting rod assembly (54); when the body (1) runs horizontally, both limit support blocks (52) support the traction arm (3); when the body (1) enters the inclined track, due to the relative rotation of the gravity block (53), the gravity block (53) drives the vertical rotating shaft (51) to rotate through the connecting rod assembly (54), rotates the two limit support blocks (52) to the outside of both sides of the traction arm (3), so that the traction arm (3) loses support. If the traction rope (4) breaks, the rear end of the traction arm (3) rises due to rotation, triggering the position switch (21) of the power source device.

2. A mechanical triggering device for anti - falling braking of ore cars towed in inclined shafts according to claim 1, Characterized in that: A horizontal shaft (7) perpendicular to the vehicle running track is provided in the middle of the front end of the body (1), the upper end of the gravity block (53) is rotatably hinged to the horizontal shaft (7), and the rear end of the traction arm (3) is also rotatably hinged to the horizontal shaft (7).

3. A mechanical triggering device for anti - falling braking of ore cars towed in inclined shafts according to claim 1, Characterized in that: The upper and lower ends of the vertical rotating shaft (51) are respectively connected to the front end of the body (1) through mounting plates (55), the mounting plates (55) are fixedly connected to the body (1), and the mounting plates (55) and the vertical rotating shaft (51) are rotatably connected through vertical pin shafts.

4. A mechanical triggering device for anti - falling braking of ore cars towed in inclined shafts according to claim 1, Characterized in that: The included angle between the axis of the hinge arm (56) and the positive projection of the limit support block (52) in the horizontal plane is 45 degrees.

5. A mechanical triggering device for anti - falling braking of ore cars towed in inclined shafts according to claim 1, Characterized in that: The connecting rod assembly (54) is composed of a cross bar A (541), a cross bar B (542), a vertical bar C (543) and a sliding pin (544); one end of the cross bar A (541) is movably hinged to the hinge arm (56) through a first pin shaft, and the other end is movably hinged to one end of the cross bar B (542) through a second pin shaft; the other end of the cross bar B (542) is fixedly connected to the vertical bar C (543); a vertical through groove (545) with closed ends at the upper and lower ends is provided on the vertical bar C (543); a sliding pin (544) is provided in the through groove (545); one end of the sliding pin (544) is fixedly connected to the gravity block (53), and the other end is provided with an anti-dropping limit ring fixedly formed therein; the first pin shaft and the second pin shaft are parallel to each other, and the second pin shaft is perpendicular to the sliding pin (544).

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