CN111661094A - Traction suspension device of straddle type monorail vehicle and working method - Google Patents

Abstract

The invention relates to a traction suspension device and a working method of a straddle-type monorail vehicle. , The traction suspension device has good vertical and lateral stability, good curve passability, and realizes the functions of bearing, guiding and traction of the single-axle bogie. The traction device adopts a plane four-link device, and the longitudinal traction rod is a single traction rod, which is used to transmit the traction force and braking force and adapt to the displacement between the car body and the bogie on the curve. The connecting device connects the bogie frame and the car body, and prevents the front and rear nodding angle of the single-axle bogie from being too large without affecting the shock absorption. Shock springs and vertical shock absorbers realize vertical buffering, and lateral shock absorbers provide lateral buffering. The side stop device limits excessive lateral displacement between the vehicle body and the bogie. The anti-roll torsion bar provides anti-roll capability and avoids excessive roll angle of the car body when passing through a small curve radius track or under the influence of lateral wind.

Description

Traction suspension device and working method of a straddle-type monorail vehicle

technical field

The invention relates to a traction suspension device and a working method of a straddle type monorail vehicle with good vertical and lateral stability, good curve passability, simple and reliable structure, and belongs to the manufacturing field of the traction suspension device of the straddle type monorail vehicle.

Background technique

At present, the common straddle-type monorail bogies are divided into two-axle bogies in Hitachi mode and single-axle bogies in Bombardier mode. The Hitachi mode bogie suspension system uses membrane air springs to provide both vertical and lateral buffering functions, and the traction device uses rubber stacks to transmit the longitudinal force between the car body and the bogie. The Bombardier suspension system uses hourglass-type rubber springs that provide both vertical and lateral cushioning. The traction device adopts the space four-link to transmit the longitudinal force between the car body and the bogie, and at the same time restrain the nodding movement between the bogie and the car body.

The single-axle bogie can make the running track of the tire at the curve match the track beam more, reduce the driving resistance and tire wear, reduce noise and vibration, and provide higher comfort. Since the running wheels of the single-axle bogie occupy the middle position, it is impossible to arrange the traction rubber pile, while the Bombardier space four-bar linkage traction device is a spatial structure, with a complex structure, high installation accuracy, difficult matching, and high cost.

SUMMARY OF THE INVENTION

Design purpose: To avoid the shortcomings of the background technology, design a traction suspension device and a working method for a straddle-type monorail vehicle with good vertical and lateral stability, good curve passability, and simple and reliable structure.

Design scheme: The straddle-type monorail system has many advantages, such as small turning radius, strong climbing ability, light bridge, good landscape, rubber tires, low noise, etc. It has been widely used in urban rail transit, tourism and sightseeing with medium and low capacity , airport ferry, etc.

The traction suspension device of the straddle-type monorail vehicle is an important mechanism connecting the bogie and the vehicle body. It has the functions of transmitting traction force, braking force, bearing the weight of the vehicle body, buffering the vibration and shock absorption of the vehicle during operation, which can improve the riding comfort of the vehicle. sex. Whether the design of the traction suspension device is reasonable is directly related to the vertical force and longitudinal force transmission. The design of the traction suspension device must meet the requirements of kinematics, dynamics and safety at the same time.

In the structural design of the present invention, the traction device adopts a plane four-link device, and the longitudinal traction rod is a single traction rod, which is used to transmit traction force and braking force and adapt to the displacement between the vehicle body and the bogie on the curve. The connecting device is arranged on the front and rear sides of the bogie to connect the bogie frame and the vehicle body to prevent the front and rear nodding angles of the single-axle bogie from being too large without affecting the shock absorption. The shock absorber spring is used to bear the vertical load of the vehicle body, and the vertical shock absorber and the lateral shock absorber are used for vertical buffering and lateral buffering. The side stop device limits excessive lateral displacement between the vehicle body and the bogie. The anti-roll torsion bar provides anti-roll capability and avoids excessive roll angle of the car body when passing through a small curve radius track or under the influence of lateral wind.

Technical solution 1: A traction suspension device for a straddle-type monorail vehicle, including a traction device, a connecting device, a shock absorbing spring, a vertical shock absorber, a lateral shock absorber, a side stop device, an anti-roll torsion bar and a spring upper The four corners of the bogie frame are provided with four sets of shock-absorbing springs, the base of the shock-absorbing spring is connected with the spring mounting surface of the bogie frame, the upper part of the shock-absorbing spring is in contact with the upper plate of the spring, and four sets of vertical shock-absorbing springs are arranged on the inner side of the shock-absorbing spring. Shock absorber, one end of the vertical shock absorber is connected with the mounting seat of the bogie frame, and the other end of the vertical shock absorber is connected with the corresponding mounting seat of the upper plate of the spring. One end of the lateral shock absorber is connected to the mounting seat of the bogie frame, the other end of the lateral shock absorber is connected to the corresponding mounting seat of the upper spring plate, and the upper spring plate is connected to the vehicle body; the two sets of traction mounting seats of the traction device are connected to the traction support The mounting plates on the legs are connected, the traction legs are connected with the vehicle body, the adapter bracket is connected with the mounting seat through the traction pin, one end of the two sets of longitudinal tie rods is connected with the mounting seat on the bogie frame, one end is connected with the adapter bracket, and the two groups are connected with the mounting seat on the bogie frame. The group adapter brackets are connected by transverse tie rods, so as to realize the mutual dislocation of longitudinal traction, braking and cornering between the vehicle body and the bogie frame.

Technical solution 2: A working method of a traction suspension device for a straddle-type monorail vehicle. The shock-absorbing spring is used to carry the vehicle body load and provide elastic shock absorption, and a vertical shock absorber is arranged next to the shock-absorbing spring to provide vertical shock absorption. Shock-absorbing damping, attenuating vertical vibration, sliding friction between the friction plate on the top of the shock-absorbing spring and the upper plate of the spring; lateral shock absorber is used to provide lateral movement damping force, reduce and attenuate lateral vibration, shock-absorbing spring, vertical shock absorber Together with the lateral shock absorber, the vertical bearing between the car body and the bogie frame and the vertical and lateral shock absorption and buffering are realized; the connecting device is arranged on the front and rear sides of the bogie frame. The mounting hole enables the mounting seat of the connecting device and the upper bracket to move relative to each other in any direction, front, back, left and right, so as not to affect the turning of the vehicle. A certain gap is reserved between the rubber sleeve and the upper bracket to ensure the free up and down shock absorption of the shock-absorbing spring. When the vehicle is towing or braking, the connecting device limits the bogie to prevent the bogie nodding angle from being too large; the traction device is a plane four-link structure, and when the vehicle moves in a straight line, the two longitudinal tie rods bear the load in the same direction and transmit it to the transfer The bracket forms a force in the same direction and a moment in the opposite direction. The moment is offset by the crossbar. The force in the same direction is transmitted to the car body through the traction mount to realize the transmission of traction and braking force; when the curve moves, due to the adapter bracket Connected by transverse tie rods, two sets of adapter brackets rotate in the same direction around the traction pin, one end of the longitudinal tie rods on both sides moves forward, and the other end moves backward to realize the relative rotation between the bogie frame and the vehicle body; the anti-roll torsion bar is installed by The pressure plate is connected with the bogie frame, and the mounting seat is connected with the car body. When the vehicle rolls, the transverse torsion bar generates torque rotation and generates an elastic reaction force, which makes the rolling car body return to positive; the vertical line between the bogie frame and the car body is straight The degree of freedom is limited by the shock absorber spring, the linear degree of freedom in the left and right directions is limited by the side block device, and the linear degree of freedom in the front and rear directions is limited by the traction device, and has the functions of shock absorption and buffering in the up and down directions, and the level between the bogie frame and the car body is horizontal. The rotational freedom is not limited, the rotational freedom of the left and right roll is limited by the anti-roll torsion bar, and the rotational freedom of the front and rear nodding is limited by the shock spring and the connecting device, so as to realize the traction, steering, Shock absorption and buffer function.

Compared with the background technology, the present invention solves the problem that the central traction pin cannot be arranged on the single-axle bogie, and avoids the complex structure and high precision requirements of the upper and lower longitudinal traction bars of the spatial four-bar linkage device. The entire traction suspension device has the advantages of simple structure, high reliability, good comfort, and low cost, and realizes the functional requirements of traction, steering, shock absorption, and buffering between the bogie and the car body; it is embodied in: first, the structure is compact Simple: The plane four-link device is adopted, and the longitudinal drawbar is a single drawbar, which solves the problem that the single-axle bogie cannot be arranged with the central drawbar, and avoids the complicated structure and precision requirements of the upper and lower longitudinal drawbars of the space four-link device. High and difficult to match; the second is the integrated design of installation: the mounting seats such as shock absorber springs, lateral and vertical shock absorbers, and anti-roll torsion bars are all integrated on the spring upper cover plate, and there is no need to design the car body installation separately. The structure is more compact, the space occupation is reduced, and it is easy to assemble; third, a connecting device is provided between the front and rear sides of the bogie and the car body, which can prevent the front and rear nodding angle of the single-axle bogie from being too large without affecting the shock absorption; four The special-shaped anti-rolling torsion bar is used to meet the requirements of installation in a small space and provide anti-rolling ability, so as to avoid the roll angle of the car body being too large when passing through a small curve radius track or being affected by lateral strong winds.

Description of drawings

Figure 1 is a schematic diagram of the traction suspension structure of the traction suspension device of the straddle-type monorail vehicle.

FIG. 2 is a schematic diagram of a traction suspension of a straddle-type monorail vehicle.

Figure 3 is a schematic diagram of the structure of the connection device.

Figure 4 is a schematic diagram of the structure of the shock-absorbing spring.

FIG. 5 is a schematic diagram of the side block installation structure.

FIG. 6 is a schematic view of the structure of the side stop device.

FIG. 7 is a schematic structural diagram of the anti-roll torsion bar of the traction suspension device of the straddle-type monorail vehicle.

Detailed ways

Example 1: Refer to Figures 1-7. Straddle-type monorail vehicle traction suspension device is composed of traction device 4, connecting device 5, damping spring 6, vertical shock absorber 7, lateral shock absorber 8, side stop device 9, anti-roll torsion bar 10 and other components. The bogie frame 2 and the vehicle body 12 are used for connection.

The lower end of the damping spring 6 is connected with the bogie frame 2 , the upper part of the damping spring 6 is in contact with the upper spring plate 11 , and the upper spring plate 11 is connected with the vehicle body 13 . The bogie frame receives the vertical load of the vehicle body 13 through the shock-absorbing spring 6 . The upper spring seat 6.5 of the shock-absorbing spring 6 is inserted into the casing of the base 6.1, the upper spring seat 6.5 moves horizontally with the base 6.1, and the friction plate 6.7 slides and rubs against the spring upper plate 11. Release the restriction of the shock absorber spring 6 on the degree of freedom of horizontal rotation. A rubber sleeve 6.4 is arranged inside the shock-absorbing spring 6 to realize the compression limit under extreme working conditions.

The damping spring 6 cooperates with the vertical shock absorber 7 and the lateral shock absorber 8 to realize the comfort of the vertical and lateral shock absorption of the vehicle.

A connecting device 5 is provided on the front and rear sides of the bogie frame 2. The connecting device 5 is a universal structure, which allows the bogie frame 2 to move relative to the vehicle body 13 when the vehicle turns. A certain free margin is reserved in the height direction, and the spring device is not affected. In the case of shock absorption, the nod angle of the bogie is restrained from being too large.

The side stop devices are installed on the left and right sides of the center position of the bogie frame. The side stop brackets 9.1 are welded to the upper spring plate 11, the upper spring plate 11 is connected to the vehicle body 13, and the mounting seat 9.4 is connected to the bogie frame 2 by welding. The stopper 9.2 is installed on the mounting seat 9.4, and an adjusting pad 9.3 is arranged between the mounting of the stopper 9.2 and the mounting seat 9.4 for adjusting the distance between the stopper 9.2 and the side stop bracket 9.1. Realize the lateral limit between the car body and the bogie frame.

The traction device adopts a plane four-bar linkage structure. Adapter bracket 4.3 to which the two longitudinal tie rods 4.5 and the cross rails 4.6 are connected. When the bogie frame 2 transmits the traction force or braking force to the longitudinal tie rod 4.5, the two sets of longitudinal tie rods 4.5 bear the load in the same direction, and are transmitted to the adapter bracket 4.3 to form a force in the same direction and a moment in the opposite direction, and the moment is offset by the crossbar 4.6, Forces in the same direction are transmitted to the body 13 via the traction mount 4.1. Realize the transmission of vehicle traction and braking force.

The adapter bracket 4.3 is connected by the horizontal tie rod 4.4. The two sets of adapter brackets 4.3 rotate in the same direction around the traction pin 4.2. One end of the longitudinal tie rod 4.5 on both sides moves forward and the other end moves backward. Turn to make the vehicle turn.

The anti-roll torsion bar 10 is connected with the bogie frame 2 through the mounting pressure plate 10.1, and the mounting seat 10.5 is connected with the vehicle body 13. When the vehicle rolls, the torsion bar 10.2 rotates with torque and generates an elastic reaction force. The damping spring 6 and the anti-roll torsion bar 10 work together to prevent the vehicle from being too large under the action of centrifugal force or other side loads. .

The vertical linear freedom between the bogie frame 2 and the vehicle body 13 is restricted by the damping spring 6, the left and right linear freedom is restricted by the side stop device 9, and the front and rear linear freedom is restricted by the traction device 4. It has shock absorption and cushioning functions. The degree of freedom of horizontal rotation between the bogie frame 2 and the vehicle body 13 is not limited, the degree of freedom of left and right roll is limited by the anti-roll torsion bar 10, and the degree of freedom of rotation of the front and rear nodding is limited by the damping spring 6 and the connecting device 5 together . Realize the functions of traction, steering, shock absorption and buffering between the bogie and the car body.

It should be understood that: although the above-mentioned embodiments have made a more detailed description of the design ideas of the present invention, these text descriptions are only simple text descriptions of the design ideas of the present invention, rather than restrictions on the design ideas of the present invention. The combination, addition or modification of the design ideas of the present invention all fall within the protection scope of the present invention.

Claims (11)

1. A traction suspension device of a straddle type monorail vehicle is characterized by comprising a traction device (4), a connecting device (5), a damping spring (6), a vertical damper (7), a transverse damper (8), a side blocking device (9), an anti-rolling torsion bar (10) and a spring upper plate (11); four groups of damping springs (6) are arranged at four corners of a bogie frame (1), bases (6.1) of the damping springs (6) are connected with a spring mounting surface of the bogie frame (1), the upper parts of the damping springs (6) are in contact connection with an upper spring plate (11), four groups of vertical dampers (7) are arranged on the inner sides of the damping springs (6), one ends of the vertical dampers (7) are connected with a mounting seat of the bogie frame (2), the other ends of the vertical dampers (7) are connected with a corresponding mounting seat of the upper spring plate (11), two groups of transverse dampers (8) are horizontally arranged between the front and rear vertical dampers (7), one ends of the transverse dampers (8) are connected with the mounting seat of the bogie frame (2), the other ends of the transverse dampers (8) are connected with the corresponding mounting seat of the upper spring plate (11), and the upper spring plate (11) is connected with a vehicle body (12); two sets of traction mount pads (4.1) of draw gear (4) are connected with the mounting panel on drawing landing leg (2), draw landing leg (2) and be connected with automobile body (12), switching support (4.3) are connected with mount pad (4.1) through drawing round pin axle (4.2), two sets of longitudinal tie (4.5) one end are connected with the mount pad on bogie framework (2), one end is connected with switching support (4.3), connect through drag link (4.4) between two sets of switching support (4.3), realize the longitudinal traction between automobile body and the bogie framework, braking and the bend misplaces each other.

2. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 1, wherein: the damping spring (6), the vertical damper (7) and the transverse damper (8) jointly realize vertical bearing, vertical and transverse damping and buffering between the truck body (13) and the bogie frame (2).

3. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 1, wherein: the damping spring can adopt an air spring or a rubber spring.

4. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 1, wherein: the connecting device (5) is arranged on the front side and the rear side of the bogie frame (2), two groups of mounting holes which are perpendicular to each other are formed in the upper portion and the lower portion of the lifting lug, the lower mounting holes of the lifting lug are connected with the mounting seat through a first pin shaft, the upper mounting holes of the lifting lug are connected with the lifting rod through a second pin shaft, the lifting rod penetrates through the upper support and then is provided with a rubber sleeve, a base plate and a nut, and the upper support is connected with the lower base.

5. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 1, wherein: an upper spring seat (6.5) of the damping spring (6) is inserted into a sleeve of the base (6.1), an outer spring (6.2), an inner spring (6.3) and a rubber sleeve (6.4) are installed between the upper spring seat (6.5) and the base (6.1), and a friction plate (6.7) is arranged at the top of the damping spring (6) and connected with the upper spring seat (6.5) through a screw (6.6).

6. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 1, wherein: the side keeps off the device and installs in bogie frame central point puts the left and right sides, side fender support (9.1) and spring upper plate (11) welded connection, spring upper plate (11) are connected with automobile body (13), mount pad (9.4) and bogie frame (2) welded connection, side fender device dog (9.2) are installed on mount pad (9.4), be provided with between dog (9.2) installation and mount pad (9.4) and adjust pad (9.3) for adjust the distance between dog (9.2) and side fender support (9.1), realize the horizontal spacing between automobile body and the bogie frame.

7. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 1, wherein: the anti-rolling torsion bar is characterized in that a longitudinal torsion bar (10.3) of the anti-rolling torsion bar is connected with two ends of a transverse torsion bar (10.2) through splines, the other end of the longitudinal torsion bar (10.3) is provided with a rubber joint bearing and is connected with the lower end of a vertical pull rod (10.4) through a pin shaft, the upper end of the vertical pull rod (10.4) is provided with the joint bearing and is connected with a mounting seat (10.5) through a pin shaft, the mounting seat (10.5) is fixedly connected with a vehicle body, and the transverse torsion bar (10.2) is connected with a bogie frame (2) through a mounting pressing plate (10.1.

8. The traction suspension device for a straddle-type monorail vehicle as claimed in claim 6, wherein: the longitudinal torsion bar (10.3) adopts a special-shaped structure.

9. A working method of a traction suspension device of a straddle type monorail vehicle is characterized by comprising the following steps:

the damping spring (6) is used for bearing the load of the vehicle body and elastically damping, a vertical damper (7) is arranged beside the damping spring and used for providing vertical damping and damping vertical vibration, and a friction plate (6.7) at the top of the damping spring (6) slides and rubs with the upper spring plate (11);

the transverse shock absorber (8) is used for providing transverse motion damping force and reducing and attenuating transverse shock, and the shock absorption spring (6), the vertical shock absorber (7) and the transverse shock absorber (8) jointly realize vertical bearing, vertical and transverse shock absorption and buffering between the truck body (13) and the bogie frame (2);

the connecting device 5 is arranged on the front side and the rear side of the bogie frame 2, and because the lifting lugs are provided with two groups of mounting holes which are perpendicular to each other, a mounting seat (5.1) of the connecting device and an upper bracket (5.6) can move relatively in any direction from front to back, left to right, so that the turning of a vehicle is not influenced, a certain gap is reserved between the rubber sleeve (5.5) and the upper bracket (5.6) for ensuring the free up-and-down damping of a damping spring, and when the vehicle is pulled or braked, the connecting device limits the bogie and inhibits the over-large angle of the point head of the bogie;

the traction device is of a plane four-bar structure, when the traction device moves linearly, the two longitudinal pull rods (4.5) bear loads in the same direction and transmit the loads to the switching support (4.3) to form a force in the same direction and a moment in opposite directions, the moment is counteracted by the transverse railing (4.6), the force in the same direction is transmitted to the vehicle body (13) through the traction mounting seat (4.1), and the transmission of traction force and braking force is realized;

when the bogie moves in a curve, the switching brackets (4.3) are connected by the tie rods (4.4), the two groups of switching brackets (4.3) rotate around the traction pins (4.2) in the same direction, one ends of the longitudinal pull rods (4.5) on two sides move forwards, and the other ends move backwards, so that the bogie frame (2) and the bogie body (13) rotate relatively;

the anti-rolling torsion bar (10) is connected with a bogie frame (2) through a mounting pressure plate (10.1), a mounting seat (10.5) is connected with a vehicle body (13), and when the vehicle rolls, the transverse torsion bar (10.2) twists and generates elastic reaction force to enable the rolling vehicle body to return to a positive state;

the straight-line freedom degree in the vertical direction between a bogie frame (2) and a vehicle body (13) is limited by a damping spring (6), the straight-line freedom degree in the left-right direction is limited by a side blocking device (9), the straight-line freedom degree in the front-back direction is limited by a traction device (4), and the straight-line freedom degree in the up-down direction has damping and buffering functions, the horizontal rotation freedom degree between the bogie frame (2) and the vehicle body (13) is not limited, the rotation freedom degree of the left-right side rolling is limited by an anti-side rolling torsion bar (10), and the rotation freedom degree of the front-back point head is limited by the damping spring (6) and a connecting device (5) together, so that the functions of traction, steering, damping and buffering between the bogie and.

10. The method for operating the traction suspension device of the straddle-type monorail vehicle as defined in claim 9, wherein the method comprises the steps of: the damping spring is internally provided with a rubber sleeve (6.4) for limiting compression of the damping spring under the limiting working condition.

11. The method for operating the traction suspension device of the straddle-type monorail vehicle as defined in claim 9, wherein the method comprises the steps of: the upper spring seat (6.5) of the damping spring (6) is inserted into the sleeve of the base (6.1), so that the upper spring seat (6.5) can only move up and down, when a vehicle enters a curve, the bogie frame (2) and the vehicle body (13) generate relative displacement, the upper spring seat (6.5) moves along with the base (6.1), and the friction plate (6.7) at the top of the damping spring (6) slides and rubs with the upper spring plate (11).

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