Multi-functional traction device for monorail engineering vehicle single-axle bogie and installation method

Abstract

The present application relates to a kind of simple structure, compact, facilitate bogie miniaturization design, high degree of integration, low cost for monorail engineering vehicle single axle bogie multifunctional traction device and installation method, including base, outer ring rubber stack, sliding seat, nylon slide and inner ring rubber stack;Connecting pin is located in the center guide cylinder of base by passing through inner ring rubber stack, outer ring rubber stack is sleeved on the center guide cylinder, sliding seat section is H type structure, H middle partition plate is provided with sleeve hole in the middle and is sleeved on the center guide cylinder, sleeve four around partition and outer ring rubber stack upper end surface are touched, nylon slide center is provided with hole and is connected with sliding seat middle middle partition plate by passing through connecting pin.Advantages: (1) simple structure, compact, facilitate bogie miniaturization design;(2) high degree of integration, low cost.

Description

Technical Field

[0001] This invention relates to a multifunctional traction device and installation method for single-axle bogies of monorail engineering vehicles, which is simple in structure, compact, facilitates bogie miniaturization design, has a high degree of integration, and low manufacturing cost, and belongs to the field of traction device manufacturing. Background Technology

[0002] Engineering vehicles are lighter than passenger vehicles, so their bogies often adopt a single-axle bogie structure. This improves the bogie's passability and effectively reduces tire wear, making single-axle bogies widely used in engineering vehicles. Due to the special structure of existing single-axle bogies, the bogie's rotational freedom needs to be restricted by the car body. Patent CN 112550337 B, "A Single-Axle Bogie with Anti-Dive and Anti-Roll and a Rail Vehicle Thereof," describes a passenger vehicle bogie scheme. It uses a vertical parallelogram structure to keep the car body and bogie parallel, thus restricting the rotational freedom. It utilizes a horizontal four-bar linkage to achieve the instantaneous center of rotation, meeting the angle requirements between the bogie and car body when the vehicle is running on a horizontal curve. This suspension structure facilitates vehicle comfort adjustment and provides good stability at high speeds, but the instantaneous center of rotation is a variable value, requiring a larger radius for curve passability.

[0003] Currently, the shock absorption devices for monorail engineering vehicle bogies mostly use helical spring devices or rubber spring components to buffer the downward vibration of the frame. The frame's bounce often relies on other devices; the lateral force between the frame and the bogie is provided by the side stops.

[0004] The shortcomings of the existing technology mentioned above are: the suspension of buses has a complex structure and requires high manufacturing precision, and its compatibility with engineering vehicles is not high. Although the suspension of engineering vehicles is relatively simple, its structure is also relatively complex, as shown in patent CN 112550337 B. Summary of the Invention

[0005] Design objective: To design a multi-functional traction device suitable for single-axle bogies of monorail engineering vehicles that simplifies the bogie suspension structure, reduces manufacturing difficulty, lowers the manufacturing cost of engineering vehicles with speeds up to 20 km / h, and simultaneously meets the requirements of single-axle bogies for shock absorption, lateral restraint, transmission of longitudinal force, and rollover resistance.

[0006] Design Scheme: To achieve the above design objectives, the traction device of this invention is structurally composed of a base, an outer ring rubber stack, an inner ring rubber stack, a sliding seat, and a nylon sliding plate. Functionally, it enables the transfer of lateral, longitudinal, and vertical loads between the vehicle and the chassis, provides constraints to prevent bogie rollover, and meets the degree of freedom requirements of the vehicle when traversing lateral and longitudinal curves.

[0007] The base 1 described in this application is a machined part with a surface treatment to improve wear resistance. It has a mounting flange with a stop on its end face for fixing to the bogie frame; inner and outer guide rings are provided to restrict the inner and outer rubber stacks respectively, while simultaneously transmitting lateral and longitudinal forces.

[0008] The outer ring rubber stack 2 described in this application is made of rubber and partition vulcanized together, and mainly bears the vertical load of the upper vehicle; four sets are set on a bogie, which together form a force to resist the rolling and pitching torque of the upper vehicle.

[0009] The sliding seat 3 described in this application is a machined part with a surface treatment to improve wear resistance; it consists of a sliding cylinder and a nylon plate seat, wherein the inner cavity of the sliding cylinder is provided with a guide ring that contacts the base, the upper surface of the nylon plate seat is fixedly mounted with a nylon slider 4, and the lower surface contacts the outer ring rubber stack; the spring seat on the frame contacts the nylon slide plate to transmit vertical load and release horizontal sliding freedom.

[0010] The inner ring rubber stack 5 described in this application is formed by vulcanizing rubber with a partition and bushing (this part is a conventional assembly). It adopts a variable stiffness design structure in the horizontal direction (the specific structure of the variable stiffness design is that the rubber in the contact part between the inner ring rubber stack 5 and the base can reduce the horizontal stiffness of the inner ring rubber stack 5 by changing the local rubber structure; the annular groove in the rubber shown in the figure is only one example). The horizontal stiffness is low before deformation (5mm), mainly used to adapt to the vehicle's curve handling; after 5mm, it is high stiffness, mainly providing lateral and longitudinal forces for the bogie. The inner ring rubber stack is fixed in the central guide cylinder of the base by pins or bolts, providing a limiting force for the upward jump of the frame, thereby providing a constraint on the bogie's degree of freedom of rollover.

[0011] Technical Solution 1: A multi-functional traction device for a single-axle bogie of a monorail engineering vehicle, comprising a base, an outer ring rubber stack, a sliding seat, a nylon sliding plate, and an inner ring rubber stack; a connecting pin passes through the inner ring rubber stack and is located inside the central guide tube of the base; the outer ring rubber stack is sleeved on the central guide tube; the sliding seat has an H-shaped cross-section; the middle partition of the H has a hole and is sleeved on the central guide tube; the partitions around the sleeve are in contact with the upper end face of the outer ring rubber stack; the nylon sliding plate has a hole in the center and passes through the connecting pin to connect with the middle partition of the sliding seat.

[0012] Technical Solution 2: A method for installing a multi-functional traction device, comprising: 1) configuring four sets of multi-functional traction devices for each bogie, adjusting the position of the traction device according to the frame / body dimensions and fixed distance; during use, first placing the inner ring rubber stack and connecting pin into the base and temporarily connecting them with nuts; 2) fixing the assembly containing the temporarily fixed inner ring rubber stack onto the bogie frame through the flange of the base; 3) placing the outer ring rubber stack into the above assembly and adjusting its position; 4) fixing the nylon slide plate to the sliding seat with countersunk screws, ensuring that the screw head is about 2mm lower than the nylon slide plate; 5) the fixed sliding seat and nylon slide plate assembly; 6) when lowering the vehicle, removing the above temporary fixing nuts in advance, placing the frame above the multi-functional traction device of the bogie, and then fixing it with slotted nuts, ensuring a 2mm gap is reserved in the fully loaded stationary state to ensure the required degree of freedom of the device.

[0013] Compared with the prior art, the present invention has two advantages: first, it has a simple and compact structure, which facilitates the miniaturization design of bogies; second, it has a high degree of integration and low manufacturing cost. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of a multi-functional traction device used in single-axle bogies of monorail engineering vehicles.

[0015] Figure 2 yes Figure 1 Sectional view and three-dimensional schematic diagram of the central base.

[0016] Figure 3 yes Figure 1 Schematic diagram of the inner and outer ring rubber stacks.

[0017] Figure 4 yes Figure 1 Schematic diagram of the inner ring rubber stack. Detailed Implementation

[0018] Example 1: Refer to Appendix Figure 1-4 A multi-functional traction device for a single-axle bogie of a monorail engineering vehicle includes a base 1, an outer ring rubber stack 2, a sliding seat 3, a nylon sliding plate 4, and an inner ring rubber stack 5. A connecting pin 6 passes through the inner ring rubber stack 5 and is located inside the central guide cylinder 13 of the base 1. The outer ring rubber stack 2 is fitted onto the central guide cylinder 13. The sliding seat 3 has an H-shaped cross-section, with a hole in the middle of the H-shaped partition and fitting onto the central guide cylinder 13. The partitions around the sleeve contact the upper surface of the outer ring rubber stack 2. The nylon sliding plate 4 has a hole in the center and passes through the connecting pin 6 to connect with the middle partition of the sliding seat 3. The base 1 has a hole 12 in the center of the bottom plate 11, with the central guide cylinder 13 surrounding the hole. An outer ring sleeve 14 is located outside the central guide cylinder 13, and the height of the outer ring sleeve 14 is lower than the height of the central guide cylinder 13. The upper part of the inner wall of the central guide cylinder 13 has a protruding annular boss 15.

[0019] The inner ring rubber stack 5 is made of rubber, partition, and bushing vulcanized together. It adopts a variable stiffness design structure in the horizontal direction. The horizontal stiffness is low before deformation (5mm), which is mainly used to adapt to the vehicle's curve passing ability. After 5mm, it becomes high stiffness, which mainly provides lateral and longitudinal forces for the bogie.

[0020] Example 2: Based on Example 1, as follows Figure 1 As shown, each bogie is equipped with four sets of multi-functional traction devices, the position of which is adjusted according to the frame / body dimensions and distance; in use, such as Figure 1 As shown, first place the inner ring rubber stack 5 and the connecting pin into the base 1, and temporarily connect them with nuts.

[0021] like Figure 2 As shown, the component containing the inner ring rubber stack is temporarily fixed on the bogie frame via the flange of base 1.

[0022] like Figure 1 As shown, place the outer ring rubber stack into the above-mentioned component and adjust its position.

[0023] like Figure 1 As shown, the nylon slide plate 4 is fixed to the movable seat 3 with countersunk screws, ensuring that the screw head is about 2mm lower than the nylon slide plate.

[0024] like Figure 1 As shown, the fixed sliding seat 3 and the empty skateboard 4 are components.

[0025] When unloading, remove the temporary fixing nuts mentioned above in advance, then place the chassis above the bogie's multi-functional traction device, and then fix it with slotted nuts. Ensure that when the vehicle is fully loaded and stationary, leave a 2mm gap to ensure the required degree of freedom of the device.

[0026] The present invention employs the following technical means to meet the requirements of single-axle bogies for shock absorption, lateral restraint, longitudinal force transmission, and rollover resistance. For example... Figure 1 As shown, the connecting pin 6 vertically connects this device to the frame assembly, releasing vertical freedom, and then transmits lateral and longitudinal loads to the base 1 through the inner ring rubber stack 5. The vertical load of the frame is transmitted to the base 1 through the nylon plate 4, the sliding seat 3, and the outer ring rubber stack 2. During the vertical transmission process, the outer ring rubber 2 acts as a rubber spring, which can buffer the relative vibration between the frame and the bogie. In use, this invention installs 4 sets of multi-functional traction devices on each bogie, distributed at the 4 corners of the bogie. These 4 sets can form a reaction torque to resist the roll of the frame, etc.

[0027] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of the present invention, these textual descriptions are merely simple textual descriptions of the design concept of the present invention, and not limitations on the design concept of the present invention. Any combination, addition, or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A multi-functional traction device for a single-axle bogie of a monorail engineering vehicle, characterized in that: The system includes a base (1), an outer ring rubber stack (2), a sliding seat (3), a nylon sliding plate (4), and an inner ring rubber stack (5). A connecting pin (6) passes through the inner ring rubber stack (5) and is located inside the central guide tube (13) of the base (1). The outer ring rubber stack (2) is fitted onto the central guide tube (13). The sliding seat (3) has an H-shaped cross-section. The middle partition of the H-shaped structure has a hole in the middle and is fitted onto the central guide tube (13). The middle partition is in contact with the upper end face of the outer ring rubber stack (2). The nylon sliding plate (4) has a hole in the center and passes through the connecting pin (6) to connect with the middle partition of the sliding seat (3). The inner ring rubber stack (5) is made of rubber vulcanized with a partition and bushing. It adopts a variable stiffness design structure in the horizontal direction. The horizontal stiffness is 5 mm before deformation, which is the small stiffness. It is mainly used to adapt to the vehicle's curve passing ability. After 5mm, it has high rigidity and mainly provides lateral and longitudinal forces for the bogie. In use, 4 sets of multi-functional traction devices are installed on each bogie and distributed at the 4 corners of the bogie.

2. The multi-functional traction device for a single-axle bogie of a monorail engineering vehicle according to claim 1, characterized in that: The base (1) has a hole (12) in the center of the bottom plate (11), and a central guide cylinder (13) around the hole. The central guide cylinder (13) has an outer ring sleeve (14) outside the outer ring sleeve (14) and the height of the outer ring sleeve (14) is lower than the height of the central guide cylinder (13). There is a protruding annular boss (15) on the upper part of the inner wall of the central guide cylinder (13).

3. A method for installing a multi-functional traction device as described in claim 1, characterized in that: 1) Each bogie is equipped with four sets of multi-functional traction devices. The position of the traction device is adjusted according to the frame / body size and fixed distance. When in use, the inner ring rubber stack (5) and connecting pin are first placed into the base (1) and temporarily connected with nuts. 2) The component containing the inner ring rubber stack (5) is temporarily fixed and installed on the bogie frame through the flange of the base (1); 3) Place the outer ring rubber stack (2) into the above-mentioned assembly and adjust its position; 4) Fix the nylon slide plate (4) to the sliding seat (3) with countersunk screws, ensuring that the screw head is about 2mm lower than the nylon slide plate; 5) Secure the sliding base (3) and nylon slide plate (4) components; 6) When unloading, remove the temporary fixing nuts in advance, then place the frame above the bogie multi-functional traction device, and then fix it with slotted nuts. Ensure that the vehicle is fully loaded and stationary, leaving a 2mm gap to ensure the required degree of freedom of the device.

Images