Mine car braking device and mine car

Abstract

The invention provides a mine car braking device and a mine car. The mine car braking device comprises a car frame, a transmission shaft, wheels and a braking assembly. The transmission shafts are rotationally mounted on the frame, and the two transmission shafts are arranged at the front end and the rear end of the frame respectively and are parallel to each other; the wheels walk on a rail, and the two ends of the transmission shaft are each provided with one wheel; the brake assembly comprises a brake disc, a brake pad, a swing piece, a connecting rod, a rotating shaft and a driving piece. The brake disc is fixedly mounted on the transmission shaft; the brake pad is arranged on the side face of the brake disc. One end of the swinging piece is hinged to the brake pad, and the other end of the swinging piece is hinged to the driving piece; one end of the connecting rod is hinged to the middle of the swing part through a rotating shaft, and the other end of the connecting rod is fixed. And the driving piece is fixedly mounted on the frame. The swing part is driven by the driving part to swing around the rotating shaft, so that the brake pad tightly holds the brake disc to conduct braking operation, the situation that the service life of the rail is shortened due to the fact that the rail is damaged is avoided in the braking mode, the brake disc and the brake pad are consumed, the replacement cost is low, and the service life of the rail is prolonged. When the brake disc and the brake pad of one mine car need to be replaced, transportation of the whole rail does not need to be stopped, other mine cars can still run, and the influence on the transportation capacity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery, and in particular to a mining car braking device and a mining car. Background Art

[0002] A mine car is a narrow-gauge railway transport vehicle used to transport bulk materials such as coal, ore or waste rock in mines. It generally requires an electric locomotive or a diesel locomotive as a traction locomotive. The mine car is towed by the traction locomotive to travel on the top surface of the rail. Braking devices are only installed on the traction locomotive, and the mine cars towed by the traction locomotive generally do not have braking devices. The deceleration and braking of the entire train of mine cars in operation is achieved by the braking of the traction locomotive's own braking device to buffer the inertia of the entire train of mine cars, resulting in a slower speed of the mine cars and a smaller transport weight, and both the transportation speed and capacity are limited.

[0003] In order to solve the above problems, in the prior art, some people have proposed to install a brake device on the mine car, and brake the mine car by acting on the top surface of the rail through the brake device. The combined effect of the brake device and the mine car wheel will aggravate the damage to the rail and seriously shorten the service life of the rail. When the rail needs to be replaced, it is necessary to stop the transportation for replacement, which affects the transportation capacity of the mine, and the replacement cost of the rail is relatively high. Summary of the invention

[0004] In view of this, the present invention proposes a mine car braking device and a mine car to solve the technical problems proposed in the above background technology that braking is performed by acting on the top surface of the rail through the braking device, the superimposed effect of the braking device and the mine car wheels will aggravate the damage to the rail and seriously shorten the service life of the rail. When the rail needs to be replaced, it is necessary to stop transportation for replacement operations, which affects the transportation capacity of the mine, and the replacement cost of the rail is relatively high.

[0005] The technical solution of the present invention is achieved in this way:

[0006] In a first aspect, the present invention provides a mining vehicle braking device, comprising a vehicle frame, a transmission shaft, a wheel and a brake assembly, wherein:

[0007] The transmission shaft is rotatably mounted on the frame, and the two transmission shafts are respectively arranged at the front end and the rear end of the frame and are parallel to each other;

[0008] The wheels run on rails, and a wheel is installed at each end of the transmission shaft;

[0009] The brake assembly includes a brake disc, a brake pad, a swinging member, a connecting rod, a rotating shaft and a driving member; the brake disc is fixedly mounted on the transmission shaft; the brake pad is arranged on the side of the brake disc; one end of the swinging member is hinged to the brake pad, and the other end is hinged to the driving member; one end of the connecting rod is hinged to the middle part of the swinging member through a rotating shaft, and the other end of the connecting rod is fixed; the driving member is fixedly mounted on the frame, and is used to drive the swinging member to swing around the rotating shaft, so that the brake pad contacts the brake disc for braking operation.

[0010] On the basis of the above technical solution, preferably, two of the brake pads, the swinging member, the connecting rod and the rotating shaft are each provided, and the two brake pads are symmetrically arranged on both sides of the brake disc; the other end of the connecting rod is connected to the middle part of the other swinging member through another rotating shaft, and the two connecting rods are respectively located on both sides of the swinging member; the driving member adopts a bidirectional cylinder, and the two telescopic shafts of the bidirectional cylinder are respectively connected to the two swinging members, for synchronously driving the two swinging members to swing around the corresponding rotating shaft.

[0011] On the basis of the above technical solution, preferably, the rail includes a top plate, a bottom plate and an intermediate rib plate, and two ends of the intermediate rib plate are respectively vertically connected to the top plate and the bottom plate;

[0012] The brake assembly also includes an electromagnet, which is installed on the frame and can have a preset gap with the middle rib when powered on. The relative movement between the electromagnet and the rail induces eddy currents on the rail, thereby generating electromagnetic attraction between the electromagnet and the rail.

[0013] On the basis of the above technical solution, preferably, a mounting block is provided on the frame, a guide hole and a limit block are provided on the mounting block, and the limit block is arranged at one end of the guide hole close to the rail; the electromagnet is slidably installed in the guide hole and partially extends out of the guide hole, and a limit portion is provided at one end of the electromagnet located in the guide hole;

[0014] The brake assembly further comprises a return spring, one end of which is connected to an end of the guide hole away from the limit block, and the other end of which is connected to the electromagnet;

[0015] When the electromagnet is powered off, it is pulled by the return spring to retract into the mounting block;

[0016] When the electromagnet is powered on, the suction force between the rail and the electromagnet causes the electromagnet to slide toward the rail until the limiting portion contacts the limiting block.

[0017] On the basis of the above technical solution, preferably, the swing member includes two swing plates and a connecting plate, the two swing plates are arranged in parallel, and the two ends of the connecting plate are respectively connected to the two swing plates;

[0018] The brake assembly also includes a brake mounting frame and a connecting block. One side of the brake mounting frame is connected to the brake pad, and the other side is provided with a first ear seat, and the first ear seat is hinged to one end of the swing plate; the connecting block is hinged to the swing plate and fixedly connected to the telescopic shaft of the driving member.

[0019] On the basis of the above technical solution, preferably, the connecting block is located between the two swing plates, and a second ear seat is provided at both ends respectively, and the second ear seat is hinged to an end of the swing plate away from the first ear seat.

[0020] On the basis of the above technical solution, preferably, a mounting hole is provided on the connecting block, and the end of the telescopic shaft of the driving member is fixedly connected to the mounting hole.

[0021] On the basis of the above technical solution, preferably, the brake assembly further comprises a brake shaft, the brake shaft is fixedly mounted on the frame, and the driving member is fixedly mounted on the brake shaft.

[0022] On the basis of the above technical solution, preferably, it further includes four bearings, the bearings are fixedly mounted on the frame, and each transmission shaft has two bearings symmetrically mounted thereon.

[0023] In a second aspect, the present invention provides a mine car, comprising rails, a bucket and the mine car braking device described in the first aspect, wherein the rails are laid on a mine, the wheels are installed on the rails, and the bucket is installed on the frame.

[0024] The mine car brake device and the mine car of the present invention have the following beneficial effects compared with the prior art:

[0025] (1) The brake disc is fixedly mounted on the transmission shaft and rotates with the transmission shaft; one end of the swinging member is hinged to the brake pad, and the other end is hinged to the driving member; one end of the connecting rod is hinged to the middle part of the swinging member through a rotating shaft, and the other end of the connecting rod is fixed; the driving member drives the swinging member to swing around the rotating shaft so that the brake pad holds the brake disc tightly to perform a braking operation; this braking method will not cause damage to the rails and reduce the service life of the rails, and the loss is in the brake disc and brake pad, and the replacement cost is low. When the brake disc and brake pad of a mine car need to be replaced, there is no need to stop the transportation of the entire rail, and other mine cars can still run, reducing the impact on the transportation capacity;

[0026] (2) The two brake pads are symmetrically arranged on both sides of the brake disc, and the two brake pads hold the brake disc at the same time, which can improve the braking performance, thereby increasing the transportation speed of the mine car and improving the transportation capacity; the other end of the connecting rod is connected to the middle part of the other swinging member through another rotating shaft. After the two swinging members are respectively fixed to the two telescopic shafts of the driving member, the other end of the connecting rod can be relatively fixed, without the need to set up a fixing structure at the other end of the connecting rod, thereby reducing the number of parts; the two telescopic shafts of the two-way cylinder synchronously drive the two swinging members to swing around the corresponding rotating shaft, so that the two brake pads can synchronously hold the brake disc, thereby realizing the braking of the mine car;

[0027] (3) The electromagnet can have a preset gap with the middle rib plate when it is powered on. The relative movement between the electromagnet and the rail induces eddy currents in the rail, thereby generating electromagnetic attraction between the electromagnet and the rail. The braking force of the electromagnetic attraction assists the braking of the mine car, further improving the braking effect of the mine car, and can further increase the transportation speed of the mine car and improve the transportation capacity. The electromagnet only needs to be moved to a few millimeters away from the surface of the middle rib plate of the rail without contacting the rail, so there is no direct wear on the rail, and the service life of the rail will not be affected by wear.

[0028] (4) When the electromagnet is powered off, it is pulled by the return spring to retract into the mounting block, and no eddy current is generated between the electromagnet and the rail, thereby not affecting the normal operation of the mine car. When the electromagnet is powered on, the suction force between the rail and the electromagnet causes the electromagnet to slide toward the rail until the limit portion contacts the limit block. At this time, the distance between the electromagnet and the middle rib plate is the preset gap, ensuring that the electromagnet does not contact the rail, thereby improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 is a three-dimensional diagram of a brake device for a mining vehicle in an embodiment of the present invention;

[0031] Figure 2 is a top view of a mine car braking device in an embodiment of the present invention;

[0032] Figure 3 It is a front view of a mining vehicle braking device in an embodiment of the present invention;

[0033] Figure 4 is a cross-sectional view of a mining vehicle braking device in an embodiment of the present invention;

[0034] Figure 5 In the embodiment of the present invention Figure 4 AA section view of the local installation block;

[0035] Figure 6 Schematic diagram of the assembly of the brake pad and the brake disc in the embodiment of the present invention;

[0036] Figure 7 is a schematic structural diagram of a brake pad and related structures in an embodiment of the present invention;

[0037] Figure 8 is an exploded view of a brake assembly in an embodiment of the present invention;

[0038] Fig. 9 Schematic diagram of the structure of a mine car in an embodiment of the present invention.

[0039] Description of reference numerals: 1-frame, 2-transmission shaft, 3-wheel, 4-brake assembly, 5-bearing;

[0040] 100-rail, 101-top plate, 102-bottom plate, 103-middle rib plate; 200-cargo box;

[0041] 11-mounting block, 111-guide hole, 112-limiting block;

[0042] 41-brake disc, 42-brake pad, 43-swinging member, 431-swinging plate, 4311-first hinge hole, 4312-second hinge hole, 4313-axis hole, 432-connecting plate, 44-connecting rod, 441-connecting hole, 45-rotating shaft, 46-driving member, 47-electromagnet, 471-limiting part, 48-reset spring, 49-brake mounting frame, 491-first ear seat, 492-first hinge axis, 410-connecting block, 4101-second ear seat, 4102-mounting hole, 4103-second hinge axis, 420-brake shaft, 4201-cylinder mounting frame. DETAILED DESCRIPTION

[0043] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Reference Figure 1-8As shown, the first embodiment of the present invention provides a mining vehicle braking device, including a vehicle frame 1, a transmission shaft 2, a wheel 3 and a brake assembly 4, wherein:

[0045] The transmission shaft 2 is rotatably mounted on the frame 1, and two transmission shafts 2 are respectively arranged at the front end and the rear end of the frame 1 and are parallel to each other;

[0046] The wheel 3 runs on the rail 100, and a wheel 3 is installed at each end of the transmission shaft 2; the rail 100 includes a top plate 101, a bottom plate 102 and an intermediate rib plate 103, and the two ends of the intermediate rib plate 103 are respectively vertically connected to the top plate 101 and the bottom plate 102, and the circumferential surface of the wheel 3 is pressed on the top surface of the top plate 101 to roll, and the inner side surface of the top plate 101 is close to the end surface of the wheel 3 with a small gap, so as to guide the rolling of the wheel 3;

[0047] The brake assembly 4 includes a brake disc 41, a brake pad 42, a swinging member 43, a connecting rod 44, a rotating shaft 45 and a driving member 46; the brake disc 41 is fixedly mounted on the transmission shaft 2, and the two end faces of the brake disc 41 are brake faces, and the brake disc 41 rotates with the transmission shaft 2; the brake pad 42 is arranged on the side of the brake disc 41, that is, parallel to the end face of the brake disc 41; one end of the swinging member 43 is hinged to the brake pad 42, and the other end is hinged to the driving member 46; one end of the connecting rod 44 is hinged to the middle part of the swinging member 43 through the rotating shaft 45 The other end of the connecting rod 44 is fixed to form a "seesaw" structure, with the rotating shaft 45 as a fulcrum. The driving member 46 drives the end of the swinging member 43 connected to the driving member 46 to swing toward the side away from the brake disc 41, so that the end of the swinging member 43 connected to the brake pad 42 swings toward the side close to the brake disc 41, so that the brake pads 42 contact and lock with each other; the driving member 46 is fixedly installed on the frame 1, and is used to drive the swinging member 43 to swing around the rotating shaft 45, so that the brake pads 42 contact the brake disc 41 for braking operation.

[0048] The mine car braking device proposed in this embodiment is fixedly installed on the transmission shaft 2 through the brake disc 41, and rotates with the transmission shaft 2; one end of the swing member 43 is hinged to the brake pad 42, and the other end is hinged to the driving member 46; one end of the connecting rod 44 is hinged to the middle part of the swing member 43 through the rotating shaft 45, and the other end of the connecting rod 44 is fixed; the driving member 46 drives the swing member 43 to swing around the rotating shaft 45, so that the brake pad 42 holds the brake disc 41 tightly for braking operation; this braking method will not cause damage to the rail 100 and reduce the service life of the rail 100, and the loss is in the brake disc 41 and the brake pad 42, and the replacement cost is low. When the brake disc 41 and the brake pad 42 of a mine car need to be replaced, there is no need to stop the transportation of the entire rail 100, and other mine cars can still run, reducing the impact on the transportation capacity.

[0049] In some embodiments, there are two of the brake pad 42, the swing member 43, the connecting rod 44 and the rotating shaft 45, and the two brake pads 42 are symmetrically arranged on both sides of the brake disc 41; the other end of the connecting rod 44 is connected to the middle part of the other swing member 43 through another rotating shaft 45, and the two connecting rods 44 are respectively located on both sides of the swing member 43; the driving member 46 adopts a bidirectional cylinder, and the two telescopic shafts of the bidirectional cylinder are respectively connected to the two swing members 43, for synchronously driving the two swing members 43 to swing around the corresponding rotating shaft 45. The two brake pads 42 are symmetrically arranged on both sides of the brake disc 41, and the two brake pads 42 simultaneously hold the brake disc 41, which can improve the braking performance, thereby increasing the transportation speed of the mine car and improving the transportation capacity; the other end of the connecting rod 44 is connected to the middle part of the other swinging member 43 through another rotating shaft 45. After the two swinging members 43 are respectively fixed to the two telescopic shafts of the driving member 46, the other end of the connecting rod 44 can be relatively fixed, and there is no need to set up a fixing structure at the other end of the connecting rod 44, thereby reducing parts; the two telescopic shafts of the two-way cylinder synchronously drive the two swinging members 43 to swing around the corresponding rotating shaft 45, so that the two brake pads 42 can synchronously hold the brake disc 41 to achieve braking of the mine car.

[0050] In some embodiments, the brake assembly 4 further includes an electromagnet 47, which is mounted on the frame 1 and can have a preset gap with the middle rib 103 when powered on. The relative movement of the electromagnet 47 and the rail 100 causes the rail 100 to induce eddy currents, thereby generating electromagnetic attraction between the electromagnet 47 and the rail 100. The auxiliary braking of the mine car by the braking force of the electromagnetic attraction further improves the braking effect of the mine car, and can further improve the transportation speed of the mine car and improve the transportation capacity; the electromagnet 47 only needs to be moved to a few millimeters away from the surface of the middle rib 103 of the rail 100 without contacting the rail 100, so there is no direct wear on the rail 100, and the service life of the rail 100 will not be affected by wear.

[0051] In some embodiments, the frame 1 is provided with a mounting block 11, the mounting block 11 is provided with a guide hole 111 and a limit block 112, the limit block 112 is arranged at one end of the guide hole 111 close to the rail 100; the electromagnet 47 is slidably installed in the guide hole 111 and partially extends out of the guide hole 111, and the end of the electromagnet 47 located in the guide hole 111 is provided with a limit portion 471, and the limit portion 471 will be blocked and limited by the limit block 112 when contacting the limit block 112;

[0052] The brake assembly 4 further includes a return spring 48, one end of which is connected to an end of the guide hole 111 away from the limit block 112, and the other end of which is connected to the limit portion 471 of the electromagnet 47;

[0053] When the power is off, the electromagnet 47 is pulled by the return spring 48 to retract into the mounting block 11;

[0054] When the electromagnet 47 is powered on, the suction force between the rail 100 and the electromagnet 47 causes the electromagnet 47 to slide toward the rail 100 until the limiting portion 471 contacts the limiting block 112. At this time, the distance between the electromagnet 47 and the middle rib 103 is the preset gap.

[0055] The brake assembly 4 of this embodiment, when the electromagnet 47 is in the power-off state, is pulled by the return spring 48 to retract into the mounting block 11, and will not generate eddy currents between the electromagnet 47 and the rail 100, and will not affect the normal operation of the mine car; when the electromagnet 47 is in the power-on state, the suction force of the rail 100 and the electromagnet 47 causes the electromagnet 47 to slide toward the rail 100 until the limit portion 471 contacts the limit block 112. At this time, the distance between the electromagnet 47 and the middle rib 103 is the preset gap, ensuring that the electromagnet 47 does not contact the rail 100, thereby improving the reliability of the device.

[0056] In some embodiments, the swing member 43 includes two swing plates 431 and a connecting plate 432. The two swing plates 431 are arranged in parallel. The two ends of the connecting plate 432 are respectively connected to the two swing plates 431. The two ends of the swing plate 431 are respectively provided with a first hinge hole 4311 and a second hinge hole 4312. The middle of the swing plate 431 is provided with an axis hole 4313. The two ends of the connecting rod 44 are respectively provided with connecting holes 441. The rotating shaft 45 passes through the connecting hole 441 of one connecting rod 44, the two axis holes 4313 and the connecting hole 441 of the other connecting rod 44 in sequence to form a stable "H-shaped" frame structure.

[0057] The brake assembly 4 also includes a brake mounting frame 49 and a connecting block 410. One side of the brake mounting frame 49 is connected to the brake pad 42, and the other side is provided with a first ear seat 491. The first ear seat 491 is hinged to one end of the swing plate 431, that is, it is connected to the first hinge hole 4311 through a first hinge shaft 492; the connecting block 410 is hinged to the swing plate 431 and is fixedly connected to the telescopic shaft of the driving member 46, and the axis of the telescopic shaft of the driving member 46 is parallel to the axis direction of the brake disc 41.

[0058] The swing member 43 in this embodiment is connected to the two swing plates 431 respectively through the two ends of the connecting plate 432, so that the swing member 43 is finalized and the structure is strengthened; one side of the brake mounting frame 49 is connected to the brake pad 42, and the first ear seat 491 on the other side is hinged to one end of the swing plate 431, so that the brake pad 42 and the swing plate 431 are hinged, and when replacing the brake pad 42, it is only necessary to remove the brake pad 42 from the brake mounting frame 49 without disassembling the connection structure with the swing member 43, so as to facilitate the replacement of the brake pad 42; the swing member 43 and the driving member 46 can be hinged by the connecting block 410 being hinged to the swing plate 431 and fixedly connected to the telescopic shaft of the driving member 46.

[0059] In some embodiments, the connecting block 410 is located between the two swing plates 431, and a second ear seat 4101 is provided at both ends. The second ear seat 4101 is hinged to the end of the swing plate 431 away from the first ear seat 491, that is, the second ear seat 4101 is hinged to the second hinge hole 4312 through the second hinge axis 4103, and the flexible swing of the swing plate 431 improves the reliability of the device.

[0060] In some embodiments, the connection block 410 is provided with a mounting hole 4102, and the end of the telescopic shaft of the driving member 46 is fixedly connected to the mounting hole 4102. The mounting hole 4102 is coaxial with the telescopic shaft, and the telescopic shaft passes through the mounting hole 4102, and the end of the telescopic shaft is fixed to the mounting hole 4102, which can be fixed by bolt connection and a flat key. The driving member 46 is extended and retracted, driving the swing plate 431 to rotate around the rotating shaft 45, so that the brake pad 42 is close to the brake disc 41 to perform a braking operation.

[0061] In some embodiments, the brake assembly 4 further includes a brake shaft 420, the brake shaft 420 is fixedly mounted on the frame 1, and the drive member 46 is fixedly mounted on the brake shaft 420. By fixing the brake shaft 420 on the frame 1, the brake shaft 420 can be arranged parallel to the transmission shaft 2, a cylinder mounting frame 4201 is provided on the brake shaft 420, and the drive member 46 is fixedly mounted on the cylinder mounting frame 4201 by bolts, so that the drive member 46 is installed and fixed.

[0062] In some embodiments, the mine car brake device further includes four bearings 5, the bearings 5 ​​are fixedly mounted on the frame 1, and each transmission shaft 2 is symmetrically mounted with two bearings 5. By fixing the bearings 5 ​​on the frame 1 and symmetrically mounting two bearings 5 ​​on the transmission shaft 2, the transmission shaft 2 is connected to the frame 1 in rotation, and the transmission shaft 2 rotates with the wheels 3 to realize the movement of the frame 1 and complete the transportation of ore and the like.

[0063] The working principle of the mine car braking device proposed in this embodiment is: the brake disc 41 is fixedly installed on the transmission shaft 2 and rotates with the transmission shaft 2; one end of the swing member 43 is hinged to the brake pad 42, and the other end is hinged to the driving member 46; one end of the connecting rod 44 is hinged to the middle part of the swing member 43 through the rotating shaft 45, and the other end of the connecting rod 44 is fixed; the driving member 46 drives the swing member 43 to swing around the rotating shaft 45, so that the brake pad 42 holds the brake disc 41 tightly to perform a braking operation; this braking method will not cause damage to the rail 100 and reduce the service life of the rail 100, and the loss is in the brake disc 41 and the brake pad 42, and the replacement cost is low. When the brake disc 41 and the brake pad 42 of a mine car need to be replaced, there is no need to stop the transportation of the entire rail 100, and other mine cars can still run, reducing the impact on the transportation capacity;

[0064] When the electromagnet 47 is powered on, the return spring 48 pulls the electromagnet 47 to retract into the mounting block 11, and no eddy current is generated between the electromagnet 47 and the rail 100, which does not affect the normal operation of the mine car. When the electromagnet 47 is powered on, the suction force of the rail 100 and the electromagnet 47 causes the electromagnet 47 to slide toward the rail 100 until the limit portion 471 contacts the limit block 112. At this time, the distance between the electromagnet 47 and the intermediate rib 103 is the preset gap, and the electromagnet 47 and the rail 100 are close to each other. 0 causes the rail 100 to induce eddy currents, thereby generating electromagnetic attraction between the electromagnet 47 and the rail 100; the mine car is auxiliary braked by the braking force of the electromagnetic attraction, further improving the braking effect of the mine car, which can further increase the transportation speed of the mine car and improve the transportation capacity; the electromagnet 47 only needs to be moved to a few millimeters away from the surface of the middle rib 103 of the rail 100 without contacting the rail 100, so there is no direct wear on the rail 100, and the service life of the rail 100 will not be affected by wear.

[0065] Based on the same concept, the second embodiment of the present invention is combined with Fig. 9 As shown, a mine car is provided, comprising a rail 100, a bucket 200 and the mine car braking device described in the first aspect, wherein the rail 100 is laid on a mine, the wheels 3 are installed on the rail 100 for running, and the bucket 200 is installed on the frame 1.

[0066] The mine car proposed in this embodiment drives the swing member 43 to swing around the rotating shaft 45 through the driving member 46, so that the brake pad 42 holds the brake disc 41 tightly to perform a braking operation. This braking method will not cause damage to the rail 100 and reduce the service life of the rail 100. The loss is in the brake disc 41 and the brake pad 42, and the replacement cost is low. When the brake disc 41 and the brake pad 42 of a mine car need to be replaced, there is no need to stop the transportation of the entire rail 100, and other mine cars can still operate, reducing the impact on the transportation capacity.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mining car braking device, characterized in that: It includes a frame, a transmission shaft, wheels and brake components, including: The transmission shaft is rotatably mounted on the frame, and the two transmission shafts are respectively arranged at the front end and the rear end of the frame and are parallel to each other; The wheels run on rails, and a wheel is installed at each end of the transmission shaft; The brake assembly includes a brake disc, a brake pad, a swinging member, a connecting rod, a rotating shaft and a driving member; the brake disc is fixedly mounted on the transmission shaft; the brake pad is arranged on the side of the brake disc; one end of the swinging member is hinged to the brake pad, and the other end is hinged to the driving member; one end of the connecting rod is hinged to the middle part of the swinging member through a rotating shaft, and the other end of the connecting rod is fixed; the driving member is fixedly mounted on the frame, and is used to drive the swinging member to swing around the rotating shaft, so that the brake pad contacts the brake disc for braking operation.

2. The mining vehicle braking device according to claim 1, characterized in that: The brake pad, the swing member, the connecting rod and the rotating shaft are each provided with two, and the two brake pads are symmetrically arranged on both sides of the brake disc; the other end of the connecting rod is connected to the middle part of the other swing member through another rotating shaft, and the two connecting rods are respectively located on both sides of the swing member; the driving member adopts a bidirectional cylinder, and the two telescopic shafts of the bidirectional cylinder are respectively connected to the two swing members, for synchronously driving the two swing members to swing around the corresponding rotating shaft.

3. The mining vehicle braking device according to claim 1, characterized in that: The rail includes a top plate, a bottom plate and an intermediate rib plate, and two ends of the intermediate rib plate are respectively vertically connected to the top plate and the bottom plate; The brake assembly also includes an electromagnet, which is installed on the frame and can have a preset gap with the middle rib when powered on. The relative movement between the electromagnet and the rail induces eddy currents on the rail, thereby generating electromagnetic attraction between the electromagnet and the rail.

4. The mining vehicle braking device according to claim 3, characterized in that: The frame is provided with a mounting block, the mounting block is provided with a guide hole and a limit block, the limit block is arranged at one end of the guide hole close to the rail; the electromagnet is slidably installed in the guide hole and partially extends out of the guide hole, and the end of the electromagnet located in the guide hole is provided with a limit portion; The brake assembly further comprises a return spring, one end of which is connected to an end of the guide hole away from the limit block, and the other end of which is connected to the electromagnet; When the electromagnet is powered off, it is pulled by the return spring to retract into the mounting block; When the electromagnet is powered on, the suction force between the rail and the electromagnet causes the electromagnet to slide toward the rail until the limiting portion contacts the limiting block.

5. The mining vehicle braking device according to claim 1, characterized in that: The swing member comprises two swing plates and a connecting plate, the two swing plates are arranged in parallel, and the two ends of the connecting plate are respectively connected to the two swing plates; The brake assembly also includes a brake mounting frame and a connecting block. One side of the brake mounting frame is connected to the brake pad, and the other side is provided with a first ear seat, and the first ear seat is hinged to one end of the swing plate; the connecting block is hinged to the swing plate and fixedly connected to the telescopic shaft of the driving member.

6. The mining vehicle braking device according to claim 5, characterized in that: The connecting block is located between the two swing plates, and has second ear seats at both ends respectively. The second ear seat is hinged to one end of the swing plate away from the first ear seat.

7. The mining vehicle braking device according to claim 6, characterized in that: The connecting block is provided with a mounting hole, and the end of the telescopic shaft of the driving member is fixedly connected to the mounting hole.

8. The mining vehicle braking device according to claim 7, characterized in that: The brake assembly also includes a brake shaft, which is fixedly mounted on the frame, and the driving member is fixedly mounted on the brake shaft.

9. The mining vehicle braking device according to claim 1, characterized in that: It also includes four bearings, which are fixedly mounted on the frame, and each transmission shaft is symmetrically mounted with two bearings.

10. A mining car, characterized in that: It comprises rails, a bucket and the mine car braking device according to any one of claims 1 to 9, wherein the rails are laid on a mine, the wheels are installed on the rails, and the bucket is installed on the frame.

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