A passive brake for mining rail vehicles

Abstract

A passive mining rail vehicle brake relates to the technical field of mining rail vehicle brakes, comprising a base, wherein the base is provided with two telescopic friction plate assemblies arranged back to back on the left and right; the telescopic friction plate assembly comprises a friction plate, a transmission plate and no less than two insertion rods, the front end and the rear end of the friction plate are respectively bent inwards, the insertion rod is vertically fixed on the inner side of the friction plate, the upper part of the base is provided with axial holes corresponding to the insertion rods one by one, and a swing cylinder is also fixed on the base, one end of the swing handle is hinged with a transmission rod A, and the other end is hinged with a transmission rod B, the front end of the transmission rod A is respectively hinged with one end of two connecting rods A, and the rear end of the transmission rod B is respectively hinged with one end of two connecting rods B. This passive mining rail vehicle brake can brake all passing rail vehicles and decelerate the vehicles, the braking is smooth, no strong impact is generated on the vehicles, and the practicability is strong.

Description

Technical field:

[0002] The invention relates to the technical field of brakes for mining rail vehicles, and in particular to a passive brake for mining rail vehicles. Background technology:

[0004] At present, the braking method of mining rail vehicles mostly adopts active braking, that is, the brakes are installed on the rail vehicles, driven by manpower or automatically, and this brake needs to be installed separately on each vehicle. For unpowered rail vehicles, such as mining flatbed vehicles, there is no braking device. For a group of mining rail vehicles, when the traction system or vehicle connection device fails, the runaway problem is very likely to occur. In order to solve the runaway problem, the method of setting a car blocker on the track is mostly used to brake the vehicle. However, the car blocker is basically a rigid brake. When the vehicle speed is fast, the large impact is likely to cause the vehicle to derail or overturn. Summary of the invention:

[0006] In order to solve the above technical problems, the present invention provides a passive mining rail vehicle brake, which can brake all passing vehicles and decelerate the vehicles, and the braking is smooth without generating strong impact on the vehicles.

[0007] The present invention is achieved through the following technical solutions:

[0008] A passive mining rail vehicle brake, characterized in that it includes a base, on which two telescopic friction plate assemblies are arranged back to back on the left and right; the telescopic friction plate assembly includes a friction plate, a transmission plate and no less than two plungers, the front end and the rear end of the friction plate are respectively bent inward, the plunger is vertically fixed to the inner side of the friction plate, the upper part of the base is provided with axial holes corresponding to the plungers one by one, the plunger can slide through the transmission plate and the corresponding axial holes from the outside to the inside in sequence, a spring is sleeved on the plunger, one end of the spring is fixed to the inner side of the friction plate, and the other end is fixed to the outer side of the transmission plate, a connecting rod A is hinged to the inner side of the front end of the transmission plate, and a connecting rod B is hinged to the inner side of the rear end of the transmission plate; a swing cylinder is also fixed to the base, and a swing handle is provided at the output end of the swing cylinder, one end of the swing handle is hinged to the transmission rod A, and the other end is hinged to the transmission rod B, the front end of the transmission rod A is respectively hinged to one end of the two connecting rods A, and the rear end of the transmission rod B is respectively hinged to one end of the two connecting rods B.

[0009] In another aspect of the present invention, the transmission rod A, the swing handle and the transmission rod B are connected to form a straight line along the front-to-back direction at the maximum swing angle of the swing handle, the two connecting rods A are connected to form a straight line along the left-to-right direction at the maximum swing angle of the swing handle, and the two connecting rods B are connected to form a straight line along the left-to-right direction at the maximum swing angle of the swing handle.

[0010] In another aspect of the present invention, a control valve for controlling the swing cylinder to perform a swinging motion is also included.

[0011] In another aspect of the present invention, a fixing rod is connected and fixed between the insertion rods in each telescopic friction plate assembly.

[0012] In another aspect of the present invention, the front end and the rear end of the friction plate are respectively bent inward to form a slope surface.

[0013] In another aspect of the present invention, it also includes a speed sensor group A, a speed sensor group B and a controller electrically connected to the speed sensor group A and the speed sensor group B respectively, and the controller controls the swing cylinder to swing the swing handle to a maximum swing angle after the speed-measured vehicle reaches a predetermined speed. The speed sensor group A is located in front of the base, and the speed sensor group B is located behind the base.

[0014] The beneficial effects of the present invention are as follows: the passive mining rail vehicle brake can brake all passing rail vehicles and decelerate the vehicles, the braking is smooth, no strong impact is generated on the vehicles, and the practicality is strong. Description of the drawings:

[0016] Figure 1 This is a schematic diagram of the top view of the braking state of Example 1 of the present invention.

[0017] Figure 2 It is a schematic diagram of the front view structure of the braking state of embodiment 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the top view of the structure of embodiment 1 of the present invention in a non-braking state.

[0019] In the attached figure: 1. mining vehicle track, 2. wheel, 3. base, 4. plug rod, 5. transmission rod A, 6. transmission plate, 7. fixed rod, 8. connecting rod B, 9. transmission rod B, 10. swing handle, 11. swing cylinder, 12. spring, 13. friction plate, 14. connecting rod A. Specific implementation method:

[0021] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings and embodiments:

[0022] In the description of the present invention, it is necessary to understand that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1

[0025] A passive mining rail vehicle brake comprises a base 3, on which two telescopic friction plate assemblies are arranged back to back; the telescopic friction plate assembly comprises a friction plate 13, a transmission plate 6 and no less than two insertion rods 4. In this embodiment, there are two insertion rods 4 in each telescopic friction plate assembly. The front end and the rear end of the friction plate 13 are respectively bent inward to form a slope. The insertion rod 4 is vertically welded and fixed to the inner side of the friction plate 13. The upper part of the base 3 is provided with an axial hole corresponding to the insertion rod 4 one by one and with clearance fit. The insertion rod 4 can slide through the transmission plate 6 and the corresponding axial hole from the outside to the inside in sequence. The insertion rod 4 is sleeved with a spring 12. The outer diameter of the insert rod 4 is smaller than the inner diameter of the spring 12. One end of the spring 12 is welded and fixed to the inner side of the friction plate 13, and the other end is welded and fixed to the outer side of the transmission plate 6. A connecting rod A14 is hinged on the inner side of the front end of the transmission plate 6, and a connecting rod B8 is hinged on the inner side of the rear end of the transmission plate 6. A swing cylinder 11 is also fixed to the base 3 by bolts, and a swing handle 10 is welded or fixed by bolts on the output end of the swing cylinder 11. A transmission rod A5 is hinged on one end of the swing handle 10, and a transmission rod B9 is hinged on the other end. The front ends of the transmission rod A5 are respectively hinged to one ends of the two connecting rods A14, and the rear ends of the transmission rod B9 are respectively hinged to one ends of the two connecting rods B8. The transmission rod A5, the swing handle 10 and the transmission rod B9 are connected in a straight line along the front-to-back direction at the maximum swing angle of the swing handle 10, the two connecting rods A14 are connected in a straight line along the left-to-right direction at the maximum swing angle of the swing handle 10, and the two connecting rods B8 are connected in a straight line along the left-to-right direction at the maximum swing angle of the swing handle 10. In this embodiment, the maximum swing angle of the swing handle 10 is 90°. A control valve for controlling the swing cylinder 11 to swing is also included. In this embodiment, the control valve is a pneumatic reversing valve. A fixing rod 7 is also welded and fixed between the insertion rods 4 in each telescopic friction plate assembly.

[0026] When in use, the base 3 of the passive mining rail vehicle brake is installed below the mining vehicle track 1 in the underground tunnel, the swing cylinder 11 is connected to the underground air source, the swing handle 10 is in the initial position, the outer side of the friction plate 13 is facing the inner side of the track and there is enough distance between the track and the mining vehicle wheel 2 for passing. When the traction system or the vehicle connection device fails and causes the runaway condition, the operator controls the swing cylinder 11 through the control valve to swing the swing handle 10 90°, and the friction plate 13 extends outward with the action of the swing cylinder 11 and presses against the inner side of the track under the action of the spring 12. When the vehicle passes by, the friction plate 13 squeezes the inner side of the wheel 2, and the friction force generated achieves braking. Specifically, connecting rod A14, connecting rod B8, transmission rod A5, transmission rod B9 and swing handle 10 form a connecting rod mechanism, and the rotational motion of the swing cylinder 11 is transmitted to the connecting rod mechanism above. The connecting rod mechanism converts the rotational motion of the swing cylinder 11 into the squeezing motion of the friction plate 13. At the same time, the brake is kept in a braking state through the dead point of the connecting rod mechanism.

[0027] This passive mining rail vehicle brake is a passive brake installed on the track. It is not limited by the structural form of the endless rope winch and can be installed at any position on its track. The braking state is set at the dead point of the connecting rod mechanism, which can fully resist the reaction force of the brake and can be easily unlocked. Different sizes of braking force can be obtained by different compression amounts of the spring 12. This passive braking can be universal for various mining cars. The wheel enters the extrusion area between the friction plate 13 and the track from the bend at the front or rear end of the friction plate 13, gradually slowing down the vehicle, braking smoothly, and will not produce a strong impact on the vehicle, which can avoid the adverse consequences of a strong impact; it is easy and safe to operate and is suitable for various mining rail vehicles.

[0028] Example 2

[0029] A passive mining rail vehicle brake comprises a base 3, on which two telescopic friction plate assemblies are arranged back to back; the telescopic friction plate assembly comprises a friction plate 13, a transmission plate 6 and no less than two insertion rods 4. In this embodiment, there are two insertion rods 4 in each telescopic friction plate assembly. The front end and the rear end of the friction plate 13 are respectively bent inward to form a slope. The insertion rod 4 is vertically welded and fixed to the inner side of the friction plate 13. The upper part of the base 3 is provided with an axial hole corresponding to the insertion rod 4 one by one and with clearance fit. The insertion rod 4 can slide through the transmission plate 6 and the corresponding axial hole from the outside to the inside in sequence. The insertion rod 4 is sleeved with a spring 12. The outer diameter of the insert rod 4 is smaller than the inner diameter of the spring 12. One end of the spring 12 is welded and fixed to the inner side of the friction plate 13, and the other end is welded and fixed to the outer side of the transmission plate 6. A connecting rod A14 is hinged on the inner side of the front end of the transmission plate 6, and a connecting rod B8 is hinged on the inner side of the rear end of the transmission plate 6. A swing cylinder 11 is also fixed to the base 3 by bolts, and a swing handle 10 is welded or fixed by bolts on the output end of the swing cylinder 11. A transmission rod A5 is hinged on one end of the swing handle 10, and a transmission rod B9 is hinged on the other end. The front ends of the transmission rod A5 are respectively hinged to one ends of the two connecting rods A14, and the rear ends of the transmission rod B9 are respectively hinged to one ends of the two connecting rods B8. The transmission rod A5, the swing handle 10 and the transmission rod B9 are connected to form a straight line in the front-to-back direction at the maximum swing angle of the swing handle 10, the two connecting rods A14 are connected to form a straight line in the left-to-right direction at the maximum swing angle of the swing handle 10, and the two connecting rods B8 are connected to form a straight line in the left-to-right direction at the maximum swing angle of the swing handle 10. In this embodiment, the maximum swing angle of the swing handle 10 is 90°. It also includes a control valve for controlling the swing cylinder 11 to perform a swinging action, and also includes a speed sensor group A, a speed sensor group B and a controller electrically connected to the speed sensor group A and the speed sensor group B respectively. The controller controls the swing cylinder 11 to swing the swing handle 10 to the maximum swing angle after the speed-measured vehicle reaches a predetermined speed. The speed sensor group A is located in front of the base 3, and the speed sensor group B is located behind the base 3. A fixing rod 7 is also welded and fixed between the insertion rods 4 in each telescopic friction plate assembly. In this embodiment, the speed sensor group A and the speed sensor group B respectively use GH-24 mining intrinsic Hall sensors, and the controller uses a controller that is compatible with the GH-24 mining intrinsic Hall sensors.

[0030] When in use, the base 3 of the passive mining rail vehicle brake is installed below the mining vehicle track 1 in the underground tunnel, the swing cylinder 11 is connected to the underground air source, the swing handle 10 is in the initial position, the outer side of the friction plate 13 is facing the inner side of the track and there is enough distance between the friction plate 13 and the track for the wheels of the mining vehicle to pass. The speed sensor group A is fixed in the tunnel at a certain distance in front of the base 3, and the speed sensor group B is fixed in the tunnel at a certain distance behind the base 3. When the vehicle passes through the sensing position of the speed sensor group A or the speed sensor group B, the speed will be measured. When the traction system or the vehicle connection device fails and causes the running away condition, the vehicle speed exceeds the set speed limit, and the controller immediately switches the passive mining rail vehicle brake to the braking state, the swing handle 10 swings 90°, and the friction plate 13 extends outward with the action of the swing cylinder 11 and presses against the inner side of the track under the action of the spring 12. When the vehicle passes through the friction plate 13, the friction plate 13 squeezes the inner side of the wheel along the wheel, and the friction force generated realizes braking. Specifically, connecting rod A14, connecting rod B8, transmission rod A5, transmission rod B9 and swing handle 10 form a connecting rod mechanism, and the rotational motion of the swing cylinder 11 is transmitted to the connecting rod mechanism above. The connecting rod mechanism converts the rotational motion of the swing cylinder 11 into the squeezing motion of the friction plate 13. At the same time, the brake is kept in a braking state through the dead point of the connecting rod mechanism.

[0031] This passive mining rail vehicle brake is a passive brake installed on the track. It is not limited by the structural form of the endless rope winch and can be installed at any position on its track. The braking state is set at the dead point of the connecting rod mechanism, which can fully resist the reaction force of the brake and can be easily unlocked. Different sizes of braking force can be obtained by different compression amounts of the spring 12. This passive braking can be universal for various mining cars. The wheel enters the extrusion area between the friction plate 13 and the track from the bend at the front or rear end of the friction plate 13, gradually slowing down the vehicle, braking smoothly, and will not produce a strong impact on the vehicle, which can avoid the adverse consequences of a strong impact; it is easy and safe to operate and is suitable for various mining rail vehicles.

[0032] The arrangement of the speed sensor group A, the speed sensor group B and the controller enables the passive mining rail vehicle brake to be automatically actuated, which is more convenient and usable.

[0033] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A passive mining rail vehicle brake, characterized in that: The invention comprises a base, on which two telescopic friction plate assemblies are arranged back to back on the left and right; the telescopic friction plate assembly comprises a friction plate, a transmission plate and no less than two insertion rods, the front end and the rear end of the friction plate are respectively bent inwards, the insertion rod is vertically fixed to the inner side of the friction plate, the upper part of the base is provided with axial holes corresponding to the insertion rods one by one, the insertion rods can slide through the transmission plate and the corresponding axial holes from the outside to the inside in sequence, a spring is sleeved on the insertion rod, one end of the spring is fixed to the inner side of the friction plate, and the other end is fixed to the outer side of the transmission plate, a connecting rod A is hinged to the inner side of the front end of the transmission plate, and a connecting rod B is hinged to the inner side of the rear end of the transmission plate; a swing cylinder is also fixed on the base, and a swing handle is provided at the output end of the swing cylinder, one end of the swing handle is hinged to the transmission rod A, and the other end is hinged to the transmission rod B, the front end of the transmission rod A is respectively hinged to one end of the two connecting rods A, and the rear end of the transmission rod B is respectively hinged to one end of the two connecting rods B.

2. A passive mining rail vehicle brake according to claim 1, characterized in that: The transmission rod A, the swing handle and the transmission rod B are connected to form a straight line along the front-to-back direction at the maximum swing angle of the swing handle, the two connecting rods A are connected to form a straight line along the left-to-right direction at the maximum swing angle of the swing handle, and the two connecting rods B are connected to form a straight line along the left-to-right direction at the maximum swing angle of the swing handle.

3. A passive mining rail vehicle brake according to claim 1 or 2, characterized in that: It also includes a control valve for controlling the swing cylinder to perform the swing action.

4. A passive mining rail vehicle brake according to claim 1, characterized in that: A fixing rod is also connected and fixed between the insertion rods in each telescopic friction plate assembly.

5. A passive mining rail vehicle brake according to claim 1, characterized in that: The front end and the rear end of the friction plate are respectively bent inwards to form slope surfaces.

6. A passive mining rail vehicle brake according to claim 2 or 3, characterized in that: It also includes a speed sensor group A, a speed sensor group B and a controller electrically connected to the speed sensor group A and the speed sensor group B respectively. The controller controls the swing cylinder to swing the swing handle to a maximum swing angle after the speed-measured vehicle reaches a predetermined speed. The speed sensor group A is located in front of the base, and the speed sensor group B is located behind the base.

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