A suspended monorail system driven by cables

Abstract

The present application relates to the technical field of suspended rail transit, and particularly relates to a suspended monorail system driven by a cable. The suspended monorail system driven by the cable comprises a carriage and a rail beam, a cable is arranged at a large-gradient section of the rail beam, the gradient of the large-gradient section is greater than 80‰, the cable is used for providing additional power for the carriage, a bogie for connecting the rail beam of the carriage is provided with a cable gripper, the cable gripper is used for clamping the cable, and the cable gripper and the cable are detachably connected. The suspended monorail system driven by the cable is used, and the problem that the existing suspended monorail train driven by rubber wheels is not suitable for a region with a large gradient and the friction is reduced in a humid climate or a rainy season, so that the climbing ability of the suspended monorail vehicle is reduced is solved.

Description

Technical Field

[0001] This invention relates to the field of suspended rail transit technology, and in particular to a cable-driven suspended monorail system. Background Technology

[0002] Suspended monorail transit systems use overhead track beams, with bogies placed inside the box-girder track beams, suspending the vehicles beneath them for operation. Suspended monorail vehicles use rubber wheels, which, compared to rail transit vehicles using steel wheels and rails, provide stronger climbing ability and can adapt to lines with gradients up to 80‰.

[0003] Suspended monorails are highly adaptable to various terrains, making them particularly suitable for lines with small curve radii and significant undulations. However, in mountainous and hilly areas, the 80‰ climbing ability of suspended monorails is insufficient to fully meet the terrain requirements, necessitating solutions such as track relocation and tunnel excavation, which significantly increases engineering investment. Furthermore, during humid or rainy seasons, the friction of the rubber wheels decreases drastically, drastically reducing the climbing ability of traditional rubber-wheel-driven suspended monorail systems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of existing suspended monorail trains with rubber wheels being unsuitable for areas with steep slopes, and having reduced friction in humid or rainy seasons, thereby reducing the climbing ability of suspended monorail vehicles. The invention provides a suspended monorail system driven by cables.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A cable-driven suspended monorail system includes a carriage and a track beam. A cable is installed on a steep section of the track beam with a gradient greater than 80‰. The cable is used to provide additional power to the carriage. A cable gripper is installed on the bogie connecting the carriage to the track beam. The cable gripper is used to clamp the cable on the steep section.

[0007] Existing suspended monorail trains with rubber wheels are suitable for a maximum gradient of 80‰. Therefore, this system incorporates cables in areas with gradients greater than 80‰. The cables are installed inside the track beam and connected to the car via cable grips on the bogies. When the cable grips clamp the cables, the movement of the cables drives the movement of the car, providing additional power for climbing gradients and preventing the car from struggling to move up steep sections due to insufficient climbing ability. Because the cables are only installed on steep gradients, the cables and cable grips are detachable; and installing cables only on steep gradients reduces construction costs. Furthermore, since the cables are typically made of coarse fibers or metal with many protrusions and irregular shapes on their surface, the friction between the cables and cable grips is generated through the interlocking of these protrusions and irregular shapes with the cable grips. Therefore, when the cable surface is wet, it will not affect the friction between the cable and the gripper, thus avoiding the situation in existing technologies where friction is reduced in humid or rainy weather, thereby reducing the climbing ability of suspended monorail vehicles.

[0008] As a preferred embodiment of the present invention, a cable release rail is provided inside the track beam, and the cable release rail is located at both ends of the cable. The cable release rail is used to open the cable gripper.

[0009] Detachment rails are installed at both ends of the cable, and these rails can also be used to open the cable grips. When entering the cable section, the cable grips are opened via the detachment rails, allowing the cable to contact the inside of the grips, and the grips clamp the cable. When the car detaches from the cable, the grips are opened, and the grips release the cable. By installing detachment rails, the process of the car entering or detaching from the cable is smoother, improving the comfort of the car during operation.

[0010] As a preferred embodiment of the present invention, the rigging device includes a movable jaw, the rigging device includes a fixing member and a movable jaw, one end of the movable jaw is hinged to the fixing member, and the other end of the movable jaw is connected to a spring, the spring being connected to the fixing member, the spring being used to maintain the closure of the movable jaw and the fixing member.

[0011] The movable jaws can open or close by adjusting the distance between them and the fixing element, or by adjusting the angle between them. A spring can push the movable jaws together to close them, meaning the movable jaws are in a compressed state when the cable grip is closed; it can also pull the movable jaws together to close them, meaning the movable jaws are in a tensioned state when the cable grip is closed.

[0012] As a preferred embodiment of the present invention, the movable end of the movable jaw is provided with a release wheel, which can roll along the release rail and drive the movable jaw to open.

[0013] When the release wheel is about to contact the release rail, if the top surface of the release wheel is higher than the bottom surface of the release rail, the release rail will press down on the release wheel, increasing the angle between the movable jaw and the fixing component, thus opening the cable grip and then clamping or releasing the cable. Using a release wheel to open or close the cable grip facilitates operation and does not affect the operation of the monorail train.

[0014] As a preferred embodiment of the present invention, the cable gripper includes a spring and two oppositely arranged movable jaws, each of the opposite surfaces of the two movable jaws being provided with a receiving groove for accommodating the cable, the spring being used to keep the two movable jaws closed, and the cable release rail having a wedge-shaped cross-section, the cable release rail being capable of opening the two movable jaws.

[0015] The spring can be connected to two movable jaws at each end, closing them when stretched; alternatively, one end of the spring can be connected to a movable jaw, and the other end to a support, closing both jaws when compressed. Because the cross-section of the release rail is wedge-shaped, the cable grip can be opened through the tip of the wedge.

[0016] As a preferred embodiment of the present invention, a tensioning device is provided at one end of the cable, the tensioning device being used to tension the cable.

[0017] The tensioning device can tension the cable, preventing the cable from being too loose and affecting the operation process, thus ensuring the cable's operating speed.

[0018] As a preferred embodiment of the present invention, the position of the tensioning device can be adjusted along the length direction of the cable.

[0019] The tensioning device can be adjusted along the length of the cable, thus regulating the cable tension. Because the cable may undergo slight deformation during transport, adjusting the tension via the tensioning device helps ensure the efficiency of monorail train transport.

[0020] As a preferred embodiment of the present invention, when only one bogie is provided on the top surface of a section of the car, the bogie is connected to the car via a ball joint, and the bogie is provided with a limiting device for limiting the angle between the ball joint and the car.

[0021] Connecting the car and bogie using ball joints ensures the car remains horizontal along its length, improving passenger comfort. Limiting devices are also installed to prevent collisions between the car roof and the track beams.

[0022] As a preferred embodiment of the present invention, the bogie is provided with a buffer member, which is used to absorb the impact and vibration between the car body and the bogie.

[0023] The buffer can be made of rubber or spring damping. When the car enters a steep gradient, the angle between the car and the bogie changes. Therefore, a buffer is installed to reduce the impact and vibration of the change in angle, which helps to improve the ride comfort of the car.

[0024] As a preferred embodiment of the present invention, the bogie is further provided with a guide wheel, which abuts against the side wall of the track beam.

[0025] With the guide wheel abutting against the side wall, the vehicle can be guided along the track through the interaction between the guide wheel and the track.

[0026] As a preferred embodiment of the present invention, the bogie is further provided with a current collector, which abuts against the power supply rail on the side wall of the track beam.

[0027] The current collector contacts the power rail to provide power for the train's operation.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] A cable-driven suspended monorail system provides additional power to the suspended monorail train by installing cables on steep gradients greater than 80‰. The bogies on the upper part of the carriage are equipped with cable grippers to clamp the cables, allowing the movement of the carriage to be driven by the movement of the cables. This provides additional power for the carriage to climb slopes and prevents it from struggling to move up steep gradients due to insufficient climbing ability. Furthermore, because the cables are typically made of coarse fibers or metal with many protrusions and irregular shapes on their surface, the friction between the cable and the cable grippers is generated by the interlocking of these protrusions and irregular shapes with the grippers. Therefore, water on the cable surface does not affect the friction between the cable and the cable grippers. This solves the problems of existing suspended monorail trains with rubber wheels being unsuitable for steep gradients and experiencing reduced friction and climbing ability in humid or rainy weather. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a conventional suspended monorail system.

[0031] Figure 2 This is a diagram of a cable-driven suspended monorail system in Embodiment 1;

[0032] Figure 3 This is a schematic diagram of the ball joint in Example 1;

[0033] Figure 4 This is a schematic diagram of the limiting device and buffer in Embodiment 1;

[0034] Figure 5This is a front view of the bogie in Embodiment 1;

[0035] Figure 6 This is a side view of the bogie in Embodiment 1;

[0036] Figure 7 This is a schematic diagram of the cable clamp structure in Example 1. Figure 1 ;

[0037] Figure 8 This is a schematic diagram of the cable clamp structure in Example 1. Figure 2 ;

[0038] Figure 9 This is a schematic diagram of the drive device in Embodiment 1;

[0039] Figure 10 yes Figure 9 A schematic diagram of the direction A in the middle;

[0040] Figure 11 This is a schematic diagram of the tensioning device in Example 1;

[0041] Figure 12 yes Figure 11 A schematic diagram of the B direction;

[0042] Figure 13 This is a force analysis diagram of the train carriage;

[0043] Figure 14 This is a schematic diagram of the closed state of the cable clamp in Embodiment 2;

[0044] Figure 15 This is a schematic diagram of the open state of the gripper in Embodiment 2.

[0045] Icons: 1-Carriage, 2-Bogie, 20-Frame, 201-Limiting Device, 202-Buffer, 21-Hanging Device, 22-Running Wheel, 23-Guide Wheel, 24-Traction Motor, 25-Current Collector, 26-Wire Gripper, 260-Support, 261-Moving Jaw, 262-Spring, 263-Wire Release Sheave, 27-Spherical Joint, 3-Rail Beam, 31-Wire Release Rail, 4-Drive Device, 40-Frame, 41-Drive Wheel, 42-Main Shaft, 43-Bearing, 44-Coupling, 45-Reducer, 46-Motor, 5-Tensioning Device, 50-Tensioning Frame, 51-Tensioning Wheel, 52-Tensioning Wheel Shaft, 53-Tensioning Wheel Bearing, 54-Tensioning Pulley Block, 55-Tensioning Cylinder, 6-Cable, 7-Pulley Block, 8-Power Supply Rail. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings.

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0048] Example 1

[0049] like Figures 2-6 As shown, a cable-driven suspended monorail system includes a carriage 1 and a track beam 3. A cable 6 is installed on a steep section of the track beam 3 with a gradient greater than 80‰. The cable 6 provides additional power to the carriage 1. A cable gripper 26 is installed on the bogie 2 of the carriage 1, which connects to the track beam 3. The cable gripper 26 clamps the cable 6, and the cable gripper 26 and the cable 6 are detachably connected. Pulley blocks 7 are installed at both ends of the cable 6 to change its direction and angle.

[0050] like Figure 6 As shown, the bogie 2 includes a frame 20, a suspension device 21, running wheels 22, guide wheels 23, a traction motor 24, a current collector 25, and a cable grip 26. The car 1 is suspended below the bogie 2 by the suspension device 21. The traction motor 24 drives the running wheels 22 to provide traction force, the guide wheels 23 contact the side wall of the track beam 3 to provide guiding force, and the current collector 25 contacts the power supply rail 8 on the side wall of the track beam 3 to receive power. On sections with extremely steep gradients, the cable grip 26 clamps the cable 6, which provides the train with the additional driving force required for climbing the gradient. Figures 3-4 As shown, for a single-bogie type new suspended monorail vehicle, the frame 20 and the suspension device 21 are connected by a ball joint 27, allowing rotation around the longitudinal and lateral axes. This ensures that the floor of the car body 1 remains level when the vehicle is running on a slope, improving passenger comfort. Figure 4 As shown, the bogie 2 is provided with a limiting device 201 for limiting the angle between the ball joint 27 and the car body 1; the bogie 2 is provided with a buffer 202, which is used to absorb the impact and vibration between the car body 1 and the bogie 2.

[0051] like Figure 8 As shown, a release rail 31 is installed inside the track beam 3, located at both ends of the cable 6. The release rail 31 is used to open the cable grip 26. Figures 7-8 As shown, the rigging device 26 includes a movable jaw 261, which can move closer to or further away from a corresponding fixing member. A spring 262 is connected to the movable jaw 261, and the spring 262 is used to maintain the closure of the movable jaw 261 and the fixing member. The fixing member is the top surface portion of the support 260. In this embodiment, as... Figures 7-8As shown, the angle between the movable jaw 261 and the fixing member is adjustable. A release wheel 263 is located at the end of the movable jaw 261 furthest from the fixing member. The height from the top surface of the release wheel 263 to the top surface inside the track beam 3 is less than the height from the bottom surface of the release rail 31 to the top surface inside the track beam 3. The spring 262 connects the movable jaw 261 and the support 260 at both ends. When the release wheel 263 is about to contact the release rail 31, the height of the top surface of the release wheel 263 is higher than the height of the bottom surface of the release rail 31. The release rail 31 then presses down on the release wheel 263, increasing the angle between the movable jaw 261 and the fixing member, opening the cable gripper 26, and then clamping or releasing the cable 6.

[0052] like Figures 11-12 As shown, a tensioning device 5 is provided at one end of the cable 6, including a tensioning frame 50, a tensioning wheel 51, a tensioning wheel shaft 52, a tensioning wheel bearing 53, a tensioning pulley block 54, and a tensioning cylinder 55. The tensioning cylinder 55 provides tension force, which is adjusted by the tensioning pulley block 54 to pull the tensioning wheel shaft 52, and the cable 6 is wound around the tensioning wheel 51 to obtain a stable tension force. Figure 11 The dotted line in the figure represents the adjustment range of the tension wheel shaft 52.

[0053] like Figures 9-10 As shown, the drive unit 4 includes a frame 40, a drive wheel 41, a main shaft 42, a bearing 43, a coupling 44, a reducer 45, and a motor 46. The motor 46 drives the drive wheel 41 to rotate via the reducer 45, the coupling 44, and the main shaft 42. The cable 6 is wound around the drive wheel 41 and is driven by the drive wheel 41.

[0054] In this invention, the cable 6 drive system and the track beam 3 only have a force interaction at the pulley block 7 position, and there is only a vertical force with no lateral component force. Figure 13 As shown.

[0055] Example 2

[0056] like Figures 14-15 As shown, a cable-driven suspended monorail system has a structure largely consistent with Embodiment 1. The difference lies in that the cable gripper 26 includes a spring 262 and two opposing movable jaws 261. Each of the opposing surfaces of the two movable jaws 261 has a receiving groove for accommodating the cable 6. The spring 262 is used to keep the two movable jaws 261 closed. The release rail 31 is wedge-shaped and can be opened. Both movable jaws 261 are located on the top surface of the support 260. In this embodiment, the cross-section of the receiving groove is square, but it can also be circular or triangular.

[0057] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suspended monorail system with cable drive, comprising a car (1) and a track beam (3), characterized in that A cable (6) is arranged on a large slope section where the slope of the track beam (3) is greater than 80‰, the cable (6) is used to provide additional power for the car (1), a bogie (2) connecting the track beam (3) is provided with a cable gripper (26), the cable gripper (26) is used to clamp the cable (6) on the large slope section, a cable release rail (31) is arranged inside the track beam (3), the cable gripper (26) comprises a spring (262) and two oppositely arranged movable jaws (261), the opposite surfaces of the two movable jaws (261) are provided with accommodating grooves for accommodating the cable (6), the spring (262) is used to keep the two movable jaws (261) closed, the cross section of the cable release rail (31) is wedge-shaped, and the cable release rail (31) can open the two movable jaws (261).

2. A suspended monorail system employing cable drive as claimed in claim 1 wherein, One end of the cable (6) is provided with a tensioning device (5), and the tensioning device (5) is used to tension the cable (6).

3. A suspended monorail system driven by cables according to claim 2, characterized in that, The position of the tensioning device (5) can be adjusted along the length direction of the cable (6).

4. A suspended monorail system with cable drive according to any of claims 1 to 3, characterized in that When only one bogie (2) is arranged on the top surface of a car (1), the bogie (2) is connected to the car (1) through a ball hinge (27), and the bogie (2) is provided with a limiting device (201) for limiting the included angle between the ball hinge (27) and the car (1).

5. A suspended monorail system driven by cables according to any one of claims 1-3, characterized in that, The bogie (2) is also provided with a guide wheel (23) abutting against the side wall of the track beam (3).

6. A suspended monorail system driven by cables according to any one of claims 1-3, characterized in that, The bogie (2) is also provided with a current collector (25) abutting against the power rail (8) of the side wall of the track beam (3).

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