A B-type single-axle straddle-type monorail bogie with automatic assisted steering function

Abstract

The present invention discloses a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function, comprising a frame device, a running wheel device disposed within the top of the frame device, a brake device disposed at one end of the frame device, two-stage suspension devices disposed at both ends of the frame device, a stabilizing wheel device disposed at the bottom end of the two-stage suspension device, and an auxiliary power supply device disposed on one side of the stabilizing wheel device; a plurality of guide wheel devices disposed on both sides of the frame device, one of which is disposed on one side of the guide wheel device. The present invention, through the design of the rail vehicle bogie, ensures that the strength and lifespan meet the safe operation requirements of rail vehicles, improves the vehicle's ability to smoothly negotiate curves, solves the problem of curve wear of the guide tires and stabilizing tires, suppresses the vehicle's nodding and vertical movements, and improves the vehicle's operating stability.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicle bogies, and in particular to a B-type single-axle straddle-type monorail bogie with an automatic auxiliary steering function. Background Art

[0002] Monorail vehicles can be divided into two types according to their own operating characteristics: straddle-type monorail vehicle type (i.e. Type A double-axle straddle-type monorail, Type B single-axle straddle-type monorail) and suspended monorail vehicle type.

[0003] Currently, the world's operational monorail systems total approximately 386.18 kilometers, with a total of approximately 1,922 vehicles. Straddle-type monorail systems account for 87% of the total length and 92% of the vehicles in operation. Among prefecture-level cities and above nationwide, 123 meet the requirements of Document No. 52 for subway and light rail construction. Of these, 26 are planning to build straddle-type monorail systems, with some cities making rapid progress.

[0004] At present, most bogies in the existing technology are rubber hourglass spring structures and multi-link structures. For the rubber hourglass spring structure, the stiffness change is small and cannot well meet the stability of the vehicle; for the multi-link structure, the multi-link mechanism is passively forced to guide when passing through a curve, which has a certain delay, and the mechanism involved is a steel-to-steel structure, similar to the dry friction of a sliding bearing, which will cause abnormal noise, abnormal vibration and other faults after working for a period of time.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0006] In response to the problems in the related art, the present invention proposes a B-type single-axle straddle-type monorail bogie with automatic assisted steering function to overcome the above-mentioned technical problems existing in the existing related art.

[0007] To this end, the specific technical solutions adopted in the present invention are as follows:

[0008] A B-type single-axle straddle-type monorail bogie with automatic assisted steering function includes a frame device, a running wheel device is arranged inside the top of the frame device, a braking device is arranged at one end of the frame device, two-stage suspension devices are arranged at both ends of the frame device, a stabilizing wheel device is arranged at the bottom end of the secondary suspension device, and an auxiliary power supply device is arranged on one side of the stabilizing wheel device; a plurality of guide wheel devices are arranged on both sides of the frame device, and an auxiliary steering device is arranged on one side of one of the guide wheel devices.

[0009] Furthermore, in order to improve the stability of the train during operation and to suppress the nodding movement, the secondary suspension device includes an air spring arranged at the top end of one end of the frame device, an additional air chamber is provided at the top end of the air spring, and a transition seat is provided at the top end of the additional air chamber; a vertical shock absorber connected to the frame device is provided on one side of the transition seat, and anti-nodding torsion bars connected to the frame device are provided at both ends of the transition seat, and a lateral shock absorber connected to the frame device is provided on the other side of the transition seat.

[0010] Furthermore, in order to prevent the bolt connection from failing due to shear force, the bottom end of the air spring is connected to the frame device through several positioning pins and several bolts, and the top end of the additional air chamber is connected to the bottom end with the transition seat through several positioning pins and several bolts.

[0011] Furthermore, in order to enable the positioning seat to have the function of positioning and prevent the bolt connection from being subjected to shear force, the anti-nodding torsion bar includes two symmetrically arranged positioning seats connected to the frame device, and a bending torsion bar is provided through the top of the positioning seat, and a connecting rod is provided on one side of the bending torsion bar, and the top of the connecting rod is connected to the two ends of the transition seat.

[0012] Furthermore, in order to improve the comfort of train operation, the guide wheel device includes a guide wheel mounting seat connected to the frame device, an anti-damping shock absorber is provided at the top of the guide wheel mounting seat, a guide wheel mounting pin is provided at the bottom end of one side of the guide wheel mounting seat, and a positioning pin is provided on one side of the guide wheel mounting pin; the outer side of the bottom of the guide wheel mounting pin is provided with an integral bearing, an axle box rear cover, a sealing assembly, a coupling and a tire in sequence, and a safety wheel is provided at the bottom end of the guide wheel mounting pin.

[0013] Furthermore, in order to accurately locate the relative position of the brake caliper and the bogie, it can also effectively prevent the mounting bolt connection from being subjected to shear force; the brake pads of the new material are not only compact in structure, but also can meet the braking thermal capacity of high-speed performance, the braking device includes a mounting seat connected to the frame device, and a braking mechanism is provided on one side of the mounting seat; a plurality of brake sleeves are provided on one side of the mounting seat, and a plurality of anti-rotation platforms are provided on the other side of the mounting seat; the braking mechanism includes a plurality of brake pipes that cooperate with the brake sleeves, a brake caliper is provided at one end of the brake pipe, a brake pad is provided inside the brake caliper, a plurality of anti-rotation bosses that cooperate with the anti-rotation platform are provided on one side of the top of the brake caliper, and a brake disc is provided at the bottom end of the brake caliper.

[0014] Furthermore, in order to actively help the vehicle pass through curves smoothly, reduce the tire wear of the guide wheel device and the stabilizing wheel device, and extend the service life, the auxiliary steering device includes two steering links connected to the frame device, and a swing arm is provided at one end of the steering link; a connecting seat is provided at the bottom end of the swing arm, and an elastic node is provided at the top end of the swing arm, and the two swing arms are connected by a steering cylinder.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention adopts a rail vehicle bogie design to ensure that the strength and life span meet the requirements for safe operation of rail vehicles, thereby achieving safe and stable operation of B-type single-axle straddle-type monorail vehicles, improving passenger comfort, and enhancing the vehicle's ability to smoothly negotiate curves. It also solves the problem of curve wear of guide tires and stabilizing tires, and suppresses the vehicle's nodding and vertical movements, thereby improving the vehicle's operating stability.

[0017] 2. The present invention has a simple and reliable structure and low cost; it has strong line adaptability, reduces maintenance material costs and labor costs, and can be applied to different types of track beams, different types of power supply systems, and small radius line operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0019] Figure 1 2 is a schematic structural diagram of a B-type single-axle straddle-type monorail bogie with automatic assisted steering function according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0021] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0022] Figure 4 yes Figure 1 A partial enlarged view of point C in the middle;

[0023] Figure 5 This is an assembly diagram of a secondary suspension device and a frame device in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0024] Figure 6 2. It is a structural schematic diagram of an anti-nodding torsion bar in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0025] Figure 7 2 is a schematic structural diagram of a guide wheel device in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0026] Figure 8 is a cross-sectional view of a guide wheel device in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0027] Figure 9 yes Figure 8 A partial enlarged view of point D in the middle;

[0028] Figure 10 2 is a schematic structural diagram of a braking device in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0029] Figure 11 yes Figure 10 A partial enlarged view of point E in the middle;

[0030] Figure 12 2. It is a structural schematic diagram of a mounting seat in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0031] Figure 13 yes Figure 12 A partial enlarged view of point F in the middle;

[0032] Figure 14 2. It is a structural schematic diagram of a braking mechanism in a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function according to an embodiment of the present invention;

[0033] Figure 15 This is an assembly diagram of an auxiliary steering device and a frame device in a B-type single-axle straddle-type monorail bogie with an automatic auxiliary steering function according to an embodiment of the present invention;

[0034] Figure 16 yes Figure 15 A partial enlarged view of point G in the middle.

[0035] In the picture:

[0036] 1. Frame assembly; 2. Running wheel assembly; 3. Braking assembly; 301. Mounting seat; 3011. Brake sleeve; 3012. Anti-rotation platform; 302. Braking mechanism; 3021. Brake pipe; 3022. Brake caliper; 3023. Brake pad; 3024. Anti-rotation boss; 3025. Brake disc; 4. Secondary suspension assembly; 401. Air spring; 402. Additional air chamber; 403. Transition seat; 404. Vertical shock absorber; 405. Anti-nodding torsion bar; 4051. Positioning seat; 4052. Bending torsion bar ;4053, connecting rod; 406, lateral shock absorber; 5, stabilizing wheel device; 6, auxiliary power supply device; 8, guide wheel device; 801, guide wheel mounting seat; 802, anti-damping shock absorber; 803, guide wheel mounting pin; 804, integral bearing; 805, axle box rear cover; 806, sealing assembly; 807, coupling; 808, tire; 809, safety wheel; 9, auxiliary steering device; 901, steering link; 902, swing arm; 903, connecting seat; 904, elastic node; 905, steering cylinder. DETAILED DESCRIPTION

[0037] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0038] According to an embodiment of the present invention, a B-type single-axle straddle-type monorail bogie with an automatic assisted steering function is provided.

[0039] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-16 As shown, a B-type single-axle straddle-type monorail bogie with automatic assisted steering function according to an embodiment of the present invention includes a frame device 1, a running wheel device 2 is arranged inside the top of the frame device 1, a braking device 3 is arranged at one end of the frame device 1, and secondary suspension devices 4 are arranged at both ends of the frame device 1. A stabilizing wheel device 5 is arranged at the bottom end of the secondary suspension device 4, and an auxiliary power supply device 6 is arranged on one side of the stabilizing wheel device 5; a plurality of guide wheel devices 8 are arranged on both sides of the frame device 1, and an auxiliary steering device 9 is arranged on one side of one guide wheel device 8.

[0040] With the aid of the above-mentioned technical solution of the present invention, the present invention satisfies the requirements for safe operation of rail vehicles in terms of strength and life through the design of the rail vehicle bogie, realizes the safe and stable operation of the B-type single-axle straddle-type monorail vehicle, improves passenger comfort, and improves the ability of the vehicle to smoothly pass through curves; solves the problem of curve wear of the guide tires and the stabilizing tires; suppresses the nodding motion and vertical motion of the vehicle, and improves the smoothness of vehicle operation.

[0041] Specifically, each device of the present invention is processed by casting or forging steel (not limited to) to ensure the size, and is fastened by bolts (not limited to) during installation. In order to prevent the connecting bolts from failing due to shear force, bosses and grooves are designed at the corresponding installation interfaces to optimize the force conditions of the bolts.

[0042] In one embodiment, for the above-mentioned secondary suspension device 4, the secondary suspension device 4 includes an air spring 401 arranged at the top end of one end of the frame device 1, an additional air chamber 402 is provided at the top end of the air spring 401, and a transition seat 403 is provided at the top end of the additional air chamber 402; a vertical shock absorber 404 connected to the frame device 1 is provided on one side of the transition seat 403, and an anti-nodding torsion bar 405 connected to the frame device 1 is provided at both ends of the transition seat 403, and a lateral shock absorber 406 connected to the frame device 1 is provided on the other side of the transition seat 403; the bottom end of the air spring 401 is connected to the frame device 1 by a plurality of positioning pins and a plurality of bolts, and the additional air chamber 402 is provided. The top of 02 is connected to the bottom end of the transition seat 403 by a number of positioning pins and a number of bolts; the anti-nodding torsion bar 405 includes two symmetrically arranged positioning seats 4051 connected to the frame device 1, and the top of the positioning seat 4051 is penetrated by a bending torsion bar 4052, and a connecting rod 4053 is provided on one side of the bending torsion bar 4052, and the top of the connecting rod 4053 is connected to the two ends of the transition seat 403, so as to effectively prevent the bolt connection from being subjected to shear force and thus failing. By setting the positioning seat, it has the functions of positioning and preventing the bolt connection from being subjected to shear force. When the vehicle nods, the nodding movement can be suppressed by the secondary suspension device 4, thereby improving the stability of the train operation.

[0043] In one embodiment, for the guide wheel device 8, the guide wheel device 8 includes a guide wheel mounting seat 801 connected to the frame device 1, an anti-damping shock absorber 802 is provided at the top of the guide wheel mounting seat 801, a guide wheel mounting pin 803 is provided at the bottom end of one side of the guide wheel mounting seat 801, a positioning pin is provided on one side of the guide wheel mounting pin 803, an integral bearing 804, an axle box rear cover 805, a sealing assembly 806, a coupling 807 and a tire 808 are sequentially provided on the outer side of the bottom of the guide wheel mounting pin 803, and a safety wheel 809 is provided at the bottom end of the guide wheel mounting pin 803, thereby improving the comfort of train operation.

[0044] Specifically, the above-mentioned guide wheel device 8 is opposite to the traditional bearing fit. It adopts an interference fit between the bearing outer ring and the coupling 807. The integral bearing 804 not only does not require grease injection, but is also easy to maintain; the anti-damping shock absorber can effectively attenuate the vibration generated by the bogie from being transmitted to the car body. The matching design of the guide wheel mounting seat 801, the guide wheel mounting pin 803, and the locating pin can not only prevent the guide wheel mounting pin 803 and the guide wheel mounting seat 801, and the locating pin and the guide wheel mounting seat 801 from being subjected to shear force and thus failing, but also improve the safety of train operation.

[0045] In one embodiment, for the above-mentioned braking device 3, the braking device 3 includes a mounting base 301 connected to the frame device 1, and a braking mechanism 302 is provided on one side of the mounting base 301; a plurality of brake sleeves 3011 are provided on one side of the mounting base 301, and a plurality of anti-rotation platforms 3012 are provided on the other side of the mounting base 301; the braking mechanism 302 includes a plurality of brake tubes 3021 that cooperate with the brake sleeves 3011, and a brake caliper 3022 is provided at one end of the brake tube 3021, and a brake pad 3023 is provided inside the brake caliper 3022, and a plurality of anti-rotation bosses 3024 that cooperate with the anti-rotation platform 3012 are provided on the top side of the brake caliper 3022, and a brake disc 3025 is provided at the bottom end of the brake caliper 3022, so that the relative position of the brake caliper 3022 and the bogie can be accurately positioned, and the installation bolt connection can be effectively prevented from being subjected to shear force; the brake pad 3023 of the new material is not only compact in structure, but also can meet the braking thermal capacity of high-speed performance.

[0046] In one embodiment, the auxiliary steering device 9 includes two steering links 901 connected to the frame device 1. One end of the steering link 901 is provided with a swing arm 902; the bottom end of the swing arm 902 is provided with a connecting seat 903, and the top end of the swing arm 902 is provided with an elastic node 904. The two swing arms 902 are connected by a steering cylinder 905. The steering cylinder 905 controls the rotation of the swing arm 902, and the swing arm 902 drives the steering link 901 to enable the bogie to smoothly pass through the curve. When the train passes through the curve, the sensor receives signal information, causing the system to inject a certain amount of gas into the steering cylinder 905, pushing the steering cylinder 905 to retract outward, breaking the original balance, causing the swing arm 902 to rotate and drive the steering link 901 to push the bogie to rotate a certain angle relative to the track beam, allowing the vehicle to smoothly pass through the curve. After passing the curve, the sensor receives signal information, causing the steering cylinder 905 to exhaust air outward and return to the equilibrium position. This not only actively helps the vehicle to smoothly pass through the curve, but also reduces tire wear on the guide wheels and stabilizer wheels, extending the service life.

[0047] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in actual process is described in detail below.

[0048] In actual application, the present invention is composed of a frame device 1, a running wheel device 2, a braking device 3, a secondary suspension device 4, a stabilizing wheel device 5, an auxiliary power supply device 6, a guide wheel device 8 and an auxiliary steering device 9, so that the monorail bogie can be suitable for different forms of track beams, different forms of power supply systems, and small radius line operations. When the vehicle nods, the secondary suspension can suppress the nodding motion, thereby improving the stability of the train operation.

[0049] To sum up, with the help of the above technical solutions of the present invention, the present invention meets the requirements for safe operation of rail vehicles in terms of strength and life through the design of rail vehicle bogies, realizes the safe and stable operation of B-type single-axle straddle-type monorail vehicles, improves passenger comfort, and improves the ability of vehicles to pass through curves smoothly; solves the problem of curve wear of guide tires and stabilizing tires; suppresses the nodding movement and vertical movement of the vehicle, and improves the stability of vehicle operation; the present invention has a simple and reliable structure and low cost; has strong line adaptability, reduces maintenance material costs and labor costs, and can be applied to different forms of track beams, different forms of power supply systems, and small radius line operations.

[0050] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0051] 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 scope of protection of the present invention.

Claims

1. A B-type single-axle straddle-type monorail bogie with automatic assisted steering function, comprising a frame device, characterized in that: A running wheel device is provided inside the top of the frame device, a brake device is provided at one end of the frame device, two-stage suspension devices are provided at both ends of the frame device, a stabilizing wheel device is provided at the bottom end of the two-stage suspension device, and an auxiliary power supply device is provided on one side of the stabilizing wheel device; A plurality of guide wheel devices are provided on both sides of the frame device, and an auxiliary steering device is provided on one side of one of the guide wheel devices; The secondary suspension device includes an air spring arranged at the top end of one end of the frame device, an additional air chamber is arranged at the top end of the air spring, and a transition seat is arranged at the top end of the additional air chamber; A vertical shock absorber connected to the frame device is provided on one side of the transition seat, an anti-nodding torsion bar connected to the frame device is provided at both ends of the transition seat, and a lateral shock absorber connected to the frame device is provided on the other side of the transition seat; The bottom end of the air spring is connected to the frame device through a plurality of positioning pins and a plurality of bolts, and the top end of the additional air chamber is connected to the bottom end with the transition seat through a plurality of positioning pins and a plurality of bolts; The guide wheel device includes a guide wheel mounting seat connected to the frame device, an anti-damping vibration absorber is provided at the top of the guide wheel mounting seat, a guide wheel mounting pin is provided at the bottom end of one side of the guide wheel mounting seat, and a positioning pin is provided on one side of the guide wheel mounting pin; The outer side of the bottom of the guide wheel mounting pin is sequentially provided with an integral bearing, axle box rear cover, a sealing assembly, a coupling and a tire, and the bottom end of the guide wheel mounting pin is provided with a safety wheel; The auxiliary steering device includes two steering links connected to the frame device, and a swing arm is provided at one end of the steering link; The bottom end of the swing arm is provided with a connecting seat, the top end of the swing arm is provided with an elastic node, and the two swing arms are connected by a steering cylinder.

2. A B-type single-axle straddle-type monorail bogie with automatic assisted steering function according to claim 1, characterized in that: The anti-nodding torsion bar includes two symmetrically arranged positioning seats connected to the frame device. A bending torsion bar is provided through the top of the positioning seat. A connecting rod is provided on one side of the bending torsion bar, and the top of the connecting rod is connected to the two ends of the transition seat.

3. A B-type single-axle straddle-type monorail bogie with automatic assisted steering function according to claim 1, characterized in that: The braking device comprises a mounting seat connected to the frame device, and a braking mechanism is arranged on one side of the mounting seat.

4. A B-type single-axle straddle-type monorail bogie with automatic assisted steering function according to claim 3, characterized in that: One side of the mounting seat is provided with a plurality of brake sleeves, and the other side of the mounting seat is provided with a plurality of anti-rotation platforms.

5. A B-type single-axle straddle-type monorail bogie with automatic assisted steering function according to claim 4, characterized in that: The braking mechanism includes several brake tubes that cooperate with the brake sleeves, a brake caliper is provided at one end of the brake tube, a brake pad is provided inside the brake caliper, several anti-rotation bosses that cooperate with the anti-rotation platform are provided on one side of the top of the brake caliper, and a brake disc is provided at the bottom end of the brake caliper.

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