Rack rail clamping vehicle and driving part and driving assembly thereof

Abstract

The invention discloses a rack rail trapped rail vehicle and a driving part and a driving assembly thereof. The rack rail trapped rail vehicle comprises a driving disc support; the driving disc assembly is installed on the driving disc support and used for being in meshing transmission with a rack on the rack rail; the driving part is connected with the driving disc assembly and used for driving the pin shaft wheel on the driving disc assembly to rotate; the wheel swing frame assemblies are arranged on the two sides of the lower portion of the driving disc support, and rolling wheels used for being matched with the special-shaped rails on the two sides of the rack rail are arranged on the wheel swing frame assemblies; the first braking device is arranged on the driving disc support and used for clamping the driving disc assembly to achieve working braking of the locomotive; the second braking device is arranged on the wheel swing frame assembly and used for clamping the special-shaped rail to achieve emergency braking of the locomotive; and the speed limiting device is mounted on the driving disc bracket, triggers the first braking device to act when the speed of the locomotive reaches a first preset speed threshold value, and triggers the second braking device to act when the speed detected by the speed limiting device is still greater than zero after the first braking device brakes.

Description

Technical Field

[0001] The invention belongs to the technical field of rack rail clamping vehicles, and in particular relates to a driving assembly of a rack rail clamping vehicle. Background Art

[0002] The underground transportation system of coal mines plays a vital role in the transportation of underground materials. As a commonly used auxiliary transportation equipment in the mine, the main types of railcars include rope-pulled railcars and self-powered rack railcars. With the increasing demand for underground transportation in coal mines, rack railcars have gradually replaced rope-pulled railcars due to their longer transportation distance and higher safety, becoming one of the main equipment for underground transportation in coal mines.

[0003] At present, there are two main ways to brake rack railcars: one is to brake the pinion wheel through a disc brake, which is used to engage with the rack on the rack rail to achieve braking; the other is to brake through the brake of the reducer or motor. Although the existing braking device can achieve the braking of the rack railcar to a certain extent, due to the limited braking efficiency, the locomotive may still be unable to stop completely after braking, especially when the load is heavy, the track friction is insufficient or the system fails.

[0004] Once the rack rail car cannot stop completely and there are no reliable preventive measures, it may cause the locomotive to lose control, causing great safety hazards and equipment damage, and even seriously threatening the lives of underground workers. The existing braking device does not fully consider the risk of locomotive loss of control under extreme working conditions, and lacks effective emergency braking and automatic prevention mechanisms. Therefore, there is an urgent need for a safer and more reliable braking system that can ensure the stable shutdown of the rack rail car in the event of brake failure or system failure. Summary of the invention

[0005] The object of the present invention is to solve the above problems and provide a rack rail car and its driving part and driving assembly to improve the safety of the operation of the rack rail car.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a driving component, comprising:

[0007] Drive plate bracket;

[0008] A drive disc assembly is mounted on the drive disc bracket, and the drive disc assembly includes a pin wheel for engaging with a rack on the rack rail for transmission;

[0009] A driving member, connected to the driving disc assembly, and used to drive the pin wheel to rotate;

[0010] The wheel swing frame assembly is arranged on both sides under the driving disc bracket, and the wheel swing frame assembly is provided with rollers for cooperating with the special-shaped rails on both sides of the rack rail;

[0011] A first brake device, disposed on the drive disc bracket, for clamping the drive disc assembly to achieve working braking of the locomotive;

[0012] A second braking device, arranged on the wheel swing frame assembly, is used to clamp the profiled rail to achieve emergency braking of the locomotive;

[0013] A speed limiting device is installed on the drive disc bracket. The speed limiting device is used to control the action of the first brake device through a trigger unit when the locomotive speed reaches a first preset speed threshold, and to control the action of the second brake device when the speed does not drop to a second preset speed threshold after braking by the first brake device.

[0014] In a possible embodiment, the second braking device includes a brake cylinder, the upper end of which is connected to an upper brake block via an upper swing arm, and the lower end of which is connected to a lower brake block via a lower swing arm; the upper swing arm and the lower swing arm are respectively hinged on a swing frame bracket of a wheel swing frame assembly, the upper brake block is arranged above the upper plate of the special-shaped rail, and the lower brake block is arranged below the upper plate of the special-shaped rail.

[0015] In a possible embodiment, the brake cylinder is configured as a disc spring return cylinder.

[0016] In a possible embodiment, the driving member includes a hydraulic motor and a reducer connected to the hydraulic motor, and the reducer is connected to the driving disc assembly.

[0017] In a possible embodiment, the driving member includes a motor and a reducer connected to the motor, and the reducer is connected to the driving disc assembly.

[0018] In a possible embodiment, the first braking device includes a hydraulic disc brake, and the hydraulic disc brake is used to clamp the drive disc assembly.

[0019] In a possible embodiment, the speed limiting device includes an encoder and a speed measuring wheel, the encoder is connected to the speed measuring wheel via a rotating shaft, and the speed measuring wheel is rollingly disposed on an outer edge of the pin wheel.

[0020] The present invention further provides a driving unit, comprising a driving frame, on which the driving assembly is mounted.

[0021] The present invention also provides a rack rail clamping vehicle, comprising the above-mentioned driving unit.

[0022] Beneficial effects of the present invention:

[0023] 1. A second braking device is added to the existing first braking device (such as a disc brake). The second braking device acts directly on the track and can provide additional braking force in an emergency, thereby effectively avoiding the risk of uncontrolled running due to failure of the first braking device or insufficient braking force.

[0024] 2. The second braking device is designed for large slope and heavy load conditions. The greater braking force it provides ensures the stable operation of the locomotive under complex conditions, especially significantly improving the safety of running on steep slopes.

[0025] 3. The system's braking redundancy design is achieved by using two independent braking devices (the first braking device and the second braking device). When the first braking device fails, the second braking device can intervene quickly to ensure the reliability of the locomotive's braking.

[0026] 4. The speed limiter can monitor the speed of the locomotive in real time. When the speed exceeds the preset threshold, the speed limiter can automatically trigger the first brake device. If the first brake device cannot completely decelerate, the system can further trigger the second brake device to ensure the braking effect in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the drive disk assembly provided by the present invention.

[0028] Figure 2 A schematic diagram of the three-dimensional structure of the wheel swing frame assembly provided by the present invention.

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the second braking device provided by the present invention.

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the drive disk assembly provided by the present invention from another direction.

[0031] Figure 5 A schematic diagram of the three-dimensional structure of the driving part provided by the present invention on the rack track.

[0032] The text labels in the figure are as follows: 1. drive disc bracket; 2. disc brake; 3. drive disc assembly; 4. driving member; 5. reducer; 6. second braking device; 61. brake cylinder; 62. upper swing arm; 63. upper brake block; 64. lower brake block; 65. lower swing arm; 7. wheel swing frame assembly; 71. track wheel; 72. walking wheel; 73. swing frame bracket; 8. speed limiting device; 9. drive frame; 10. rack; 11. special-shaped rail. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0034] When the rack rail vehicle is running on the rack rail, it can achieve working braking by controlling the driving parts (such as motors) to stop. In case of emergency (such as overspeed), it can achieve emergency braking by braking the driving disc assembly with disc brakes. When the locomotive is running on a slope, especially when running on a large slope and heavy load, conventional braking may have some faults, such as disc brake failure or insufficient braking force, and the locomotive may run out of control.

[0035] To solve the above technical problems, the inventors added a second brake device to the wheel swing frame assembly of the locomotive. The second brake device directly acts on the track and is activated when the locomotive is out of control, which can provide a large braking force, thereby greatly improving the safety of locomotive operation. The specific structure of the drive disc assembly is shown in the following embodiments.

[0036] like Figure 1 As shown, this embodiment provides a driving assembly, which includes a driving disc bracket 1, a driving disc assembly 3, a driving member 4, a wheel swing frame assembly 7, a first braking device, a second braking device 6 and a speed limiting device 8, etc.

[0037] Among them, the driving disc assembly 3 is installed on the driving disc bracket 1, and is used for meshing and transmitting with the rack 10 on the rack rail; the driving member 4 is connected to the driving disc assembly 3, and is used to drive the pin shaft wheel on the driving disc assembly 3 to rotate; the wheel swing frame assembly 7 is arranged on both sides under the driving disc bracket 1, and is used to connect with the rollers of the profiled rail 11 on both sides of the rack rail; the first braking device (i.e., the disc brake 2) is arranged on the driving disc bracket 1, and is used to clamp the driving disc assembly 3 to achieve the working braking of the locomotive; the second braking device 6 is arranged on the wheel swing frame assembly 7, and is used to clamp the profiled rail 11 to achieve the emergency braking of the locomotive; the speed limiting device 8 is installed on the driving disc bracket 1, and triggers the first braking device to act when the locomotive speed reaches a first preset speed threshold, and after the first braking device brakes, when the speed detected by the speed limiting device 8 is not reduced to a second preset speed threshold, the second preset speed threshold can be set to 0, triggering the second braking device 6 to act.

[0038] In some embodiments, the drive disc assembly 3 includes a pin wheel, on which a plurality of pins are evenly arranged around the circumference, and the pin wheel is used to mesh with the rack 10 on the rack track. A reducer 5 is arranged in the middle of the pin wheel, and the reducer 5 is connected to the driving member 4, and is used to receive the power of the driving member 4 and drive the pin wheel to rotate, and then the reducer 5 drives the pin wheel to rotate, so that the entire drive assembly can run on the rack track.

[0039] Optionally, friction plates are respectively arranged on both side surfaces of the wheel disc of the pin shaft wheel, and two sets of first braking devices (i.e., disc brakes 2) are relatively arranged on the driving disc bracket 1, and the first braking devices are used to brake the friction plates of the wheel disc of the pin shaft wheel.

[0040] In some embodiments, a wheel swing frame assembly 7 is respectively arranged on both sides below the driving disc bracket 1, and the wheel swing frame assembly 7 includes a swing frame bracket 73, and a running wheel 72 is arranged on the swing frame bracket 73, and the running wheel 72 is used to run on the top surface of the profiled rail 11 on both sides of the rack track. A track-clamping wheel 71 is also arranged on the swing frame bracket 73, and the track-clamping wheel 71 is arranged on the outer side of the profiled rail 11 and is used to be embedded in the recess below the upper plate of the profiled rail 11, and can abut against the upper plate of the profiled rail 11 to achieve track clamping, and the wheel surface of the track-clamping wheel 71 rolls on the web of the profiled rail 11.

[0041] In some possible embodiments, a second brake device 6 is further provided on the wheel swing frame assembly 7, and the second brake device 6 includes a brake cylinder 61. Optionally, the brake cylinder 61 adopts a disc spring reset oil cylinder, and the upper end of the brake cylinder 61 is connected to the upper brake block 63 through the upper swing arm 62, and the lower end is connected to the lower brake block 64 through the lower swing arm 65. The middle of the upper swing arm 62 and the lower swing arm 65 is hinged on the swing frame bracket 73. When the second brake device 6 is in action, the upper brake block 63 is pressed on the upper plate of the profiled rail 11, and the lower brake block 64 is pressed on the lower plate of the profiled rail 11. By hingedly connecting the upper swing arm 62 and the lower swing arm 65 on the swing frame bracket 73, and controlling one end of the upper swing arm 62 and the lower swing arm 65 through the brake cylinder 61, a lever structure with the hinge point as the fulcrum is formed. The second brake device 6 can provide a large braking force on the track to meet the braking requirements of the locomotive when running on a large slope and a large load.

[0042] In some possible embodiments, the driving member 4 includes a hydraulic motor and a reducer 5 connected to the hydraulic motor. The reducer 5 is connected to the driving disc assembly 3, and the pin shaft wheel is driven to rotate through the reducer 5.

[0043] In some other possible embodiments, the driving member 4 includes a motor and a reducer 5 connected to the motor. The reducer 5 is connected to the driving disc assembly 3, and the pin shaft wheel is driven to rotate through the reducer 5.

[0044] refer to Figure 4A speed limiting device 8 is also provided on the driving disc bracket 1. The speed limiting device 8 includes a speed measuring wheel and an encoder connected to the speed measuring wheel. The encoder is connected to the speed measuring wheel through a rotating shaft. The rotating shaft is connected to the driving disc bracket 1 through a connecting plate. The middle part of the connecting plate is connected to the driving disc bracket 1 through a spring. The speed measuring wheel is pressed against the outer edge of the pin wheel by the tension of the spring. When the pin wheel rotates, the speed measuring wheel is driven to rotate together. The encoder obtains the speed of the speed measuring wheel and sends the speed signal to the control module. The control module controls the first braking device (i.e., the disc brake 2) and the second braking device 6 to act. When the locomotive speed reaches the first preset speed threshold, the first braking device is triggered to act. After the first braking device is braked, when the speed detected by the encoder is still greater than zero, that is, when the brake is not completely braked or the brake does not work, the second braking device 6 is triggered to act.

[0045] In another embodiment, a driving unit is also provided, which includes a driving frame 9, on which a mounting hole is provided. The driving assembly in the above example is installed in the mounting hole on the driving frame 9, and an annular groove is opened on the hole wall of the mounting hole. A supporting slider is provided in the middle position of the front, back, left and right sides between the driving disk assemblies 3 of the driving assembly. Four supporting sliders are all provided in the annular groove, and the entire driving assembly can rotate in the mounting hole.

[0046] The present invention also provides a rack rail clamping vehicle, which includes the above-mentioned driving unit. By providing the driving unit structure, the safety performance of the locomotive is greatly improved.

[0047] The braking device of the rack rail vehicle of this embodiment includes a first braking device (i.e., a disc brake 2) and a second braking device 6, which can work independently or in combination to ensure the braking safety of the locomotive. The action of the first braking device can be triggered manually by the driver to generate a working brake signal, or automatically triggered by the speed limiter 8 when the speed reaches a first preset speed threshold, or can be activated when an emergency brake signal is received. When the control module receives the brake signal, it sends an action instruction to the first braking device. After the brake cylinder of the first braking device receives the instruction, the cylinder piston pushes the brake caliper to move, and the brake block of the brake caliper moves to clamp the friction plates on both sides of the pin shaft wheel, and the pin shaft wheel is braked by friction force, thereby braking the entire drive system.

[0048] The action of the second brake device 6 is mainly triggered when the first brake device fails or the speed limiter 8 detects that the speed is still greater than zero after the first brake device is actuated or the speed is detected to be continuously increasing when the locomotive is running on a slope. After the control module sends an action command to the second brake device 6, the piston of the disc spring reset cylinder (i.e., the brake cylinder 61) pushes the upper and lower swing arms (upper swing arm 62, lower swing arm 65) to act, and the upper swing arm 62 drives the upper brake block 63 to move downward, pressing the upper surface of the upper plate of the profiled rail 11, while the lower swing arm 65 drives the lower brake block 64 to move upward, pressing the lower surface of the upper plate of the profiled rail 11, and the upper and lower brake blocks act on the profiled rail 11 at the same time, generating a large braking force. During normal braking, the system only activates the first brake device. When an emergency braking condition occurs, the system first activates the first brake device and monitors the speed change at the same time. If the speed does not drop to zero within the set time, the second brake device 6 is automatically activated.

[0049] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0050] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A drive assembly, characterized in that: include: Drive plate bracket; A drive disc assembly is mounted on the drive disc bracket, and the drive disc assembly includes a pin wheel for engaging with a rack on the rack rail for transmission; A driving member, connected to the driving disc assembly, and used to drive the pin wheel to rotate; The wheel swing frame assembly is arranged on both sides under the driving disc bracket, and the wheel swing frame assembly is provided with rollers for cooperating with the special-shaped rails on both sides of the rack rail; A first brake device, disposed on the drive disc bracket, for clamping the drive disc assembly to achieve working braking of the locomotive; A second braking device, arranged on the wheel swing frame assembly, is used to clamp the profiled rail to achieve emergency braking of the locomotive; A speed limiting device is installed on the drive disc bracket. The speed limiting device is used to control the action of the first brake device through a trigger unit when the locomotive speed reaches a first preset speed threshold, and to control the action of the second brake device when the speed does not drop to a second preset speed threshold after braking by the first brake device.

2. The drive assembly according to claim 1, characterized in that: The second braking device includes a brake cylinder, the upper end of which is connected to an upper brake block via an upper swing arm, and the lower end of which is connected to a lower brake block via a lower swing arm; the upper swing arm and the lower swing arm are respectively hinged on a swing frame bracket of a wheel swing frame assembly, the upper brake block is arranged above the upper plate of the special-shaped rail, and the lower brake block is arranged below the upper plate of the special-shaped rail.

3. The drive assembly according to claim 2, characterized in that: The brake cylinder is configured as a disc spring return cylinder.

4. The drive assembly according to claim 1, characterized in that: The driving member includes a hydraulic motor and a reducer connected to the hydraulic motor, and the reducer is connected to the driving disc assembly.

5. The drive assembly according to claim 1, characterized in that: The driving member includes a motor and a reducer connected to the motor, and the reducer is connected to the driving disc assembly.

6. The drive assembly according to claim 1, characterized in that: The first brake device includes a hydraulic disc brake for clamping the drive disc assembly.

7. The drive assembly according to claim 1, characterized in that: The speed limiting device comprises an encoder and a speed measuring wheel. The encoder is connected to the speed measuring wheel via a rotating shaft, and the speed measuring wheel is rollingly arranged on the outer edge of the pin wheel.

8. A driving unit, characterized in that: It comprises a driving frame, and the driving assembly described in any one of claims 1 to 7 is mounted on the driving frame.

9. A rack rail vehicle, characterized in that: The driving device comprises the driving unit according to claim 8.

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