Bogie traction device

Abstract

The bogie traction device comprises a pin seat (10) arranged in the center of a bogie frame, the bogie frame comprises a pair of longitudinal beams (14) arranged in the longitudinal direction, a first cross beam (13) and a second cross beam (17), the first cross beam (13) and the second cross beam (17) are fixed between the two longitudinal beams (14) in the transverse direction, and two limiting beams (12) are fixed between the first cross beam (13) and the second cross beam (17) in the longitudinal direction. The pin seat (10) is elastically hinged to the first cross beam (13) through two sets of traction pull rods (2) arranged in the longitudinal direction, a secondary transverse shock absorber (8) is transversely arranged on the side face, away from the traction pull rods (2), of the pin seat (10) in an offset mode, and the secondary transverse shock absorber (8) extends towards a limiting beam (12) farther away from the limiting beam (12) in the transverse direction. The two ends of the secondary transverse shock absorber (8) are elastically hinged to the limiting beam (12) and the pin seat (10) respectively, and the problem that the installation space of the secondary transverse shock absorber on the narrow gauge vehicle bogie is insufficient is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicles, and more specifically, to a bogie traction device. Background Art

[0002] The bogie is connected to the car body through a traction device. The traction or braking force generated by the bogie is transmitted to the traction device through the frame. At present, the bogie traction devices applied to urban rail vehicles with a standard gauge of 1435 mm mainly include a "Z"-shaped traction device and a single tie rod traction device.

[0003] Such as Figure 7 As shown in the single tie rod traction device, a single traction tie rod 2 is used to connect the pin seat 10 and the first cross beam 13 to transmit the traction force and braking force. At the same time, the traction tie rod 2 is connected to the upper part of the pin seat 10, and the traction point is relatively high, which affects the vehicle running performance, the layout is not compact enough, and it is not applicable to narrow gauge vehicles.

[0004] Such as Figure 6 As shown in the "Z"-shaped traction device, two groups of traction tie rods 2 are mainly used to connect the pin seat 10 and the front and rear cross beams respectively. The "Z"-shaped tie rod traction device itself requires a large space and is relatively heavy. When the cross beam hanging seat 4 is damaged, only the hanging seat can be replaced, and it does not have the modular advantage.

[0005] In the above two existing traction device structures, the secondary lateral damper 8 is installed between the pin seat 10 and the longitudinal beam 14. Since the distance between the pin seat 10 and the frame longitudinal beam 14 is roughly in the range of 440 mm to 450 mm, for narrow gauge bogies with a gauge of 1067 mm, 1000 mm and 762 mm, the lateral installation space is more limited, which greatly restricts the size and performance of the secondary lateral damper 8, and further affects the lateral stiffness during vehicle operation, and further affects the running stability of the vehicle. Summary of the Invention

[0006] Aiming at the above defects or improvement requirements of the prior art, the present invention provides a bogie traction device, which solves the problem of insufficient installation space for the secondary lateral damper on the narrow gauge bogie.

[0007] To achieve the above object, the present invention provides a bogie traction device, including a pin seat disposed at the center of the bogie frame. The bogie frame includes a pair of longitudinal beams arranged longitudinally, and a first cross beam and a second cross beam fixed transversely between the two longitudinal beams. Two limiting beams are fixed longitudinally between the first cross beam and the second cross beam. The pin seat is elastically hinged to the first cross beam through two sets of traction tie rods arranged longitudinally. On the side of the pin seat facing away from the traction tie rods, a secondary lateral damper is transversely offset. The secondary lateral damper extends along the transverse direction towards the farther one of the limiting beams. Both ends of the secondary lateral damper are elastically hinged to the limiting beam and the pin seat respectively.

[0008] The working principle of this traction device is as follows: When the vehicle is running, the traction or braking force generated by the bogie is transmitted to the two sets of traction tie rods through the first cross beam, and then transmitted to the car body through the pin seat. When the vehicle turns, elastic deformation occurs at the elastic hinge joints at both ends of the traction tie rods, and the two sets of traction tie rod devices will present a parallelogram force state. At the same time, the lateral force acts on the secondary lateral damper through the limiting beam and the damper hanging seat, effectively suppressing the vibration between the pin seat and the frame.

[0009] Further, a lateral stop seat is provided on the side of the limiting beam facing the pin seat to limit the maximum displacement when the pin seat vibrates transversely. When the lateral stop seat contacts the pin seat, deformation occurs to absorb kinetic energy.

[0010] Further, a first elastic rubber joint and a second elastic rubber joint are respectively provided at both ends of the traction tie rod with interference fit. The first elastic rubber joint is fixed to the first cross beam, and the second elastic rubber joint is fixed to the pin seat. The first cross beam, the two sets of traction tie rods and the pin seat form a quadrilateral structure, and first elastic rubber joints are provided at the four connection points to buffer the vibration generated by the relative displacement between the frame and the pin seat, and allow the quadrilateral structure to deform within a certain range.

[0011] Further, a cross beam hanging seat is fixed on the first cross beam, the first elastic rubber joint is fixed to the cross beam hanging seat, a traction rod seat is fixed on the pin seat, and the second elastic rubber joint is fixed to the traction rod seat, realizing the quick elastic hinge connection between both ends of the traction tie rod and the first cross beam and the pin seat respectively.

[0012] Further, third and fourth elastic rubber joints are provided at both ends of the secondary lateral shock absorber by interference fit. The third elastic rubber joint is fixed to the limit beam, and the fourth elastic rubber joint is fixed to the pin seat. A shock absorber mounting seat is fixedly provided at the rear side of the pin seat, and the fourth elastic rubber joint is fixed to the shock absorber mounting seat. A shock absorber hanging seat is correspondingly arranged on the limit beam, and the third elastic rubber joint is fixed to the shock absorber hanging seat, realizing quick elastic hinging of both ends of the secondary lateral shock absorber to the limit beam and the pin seat respectively.

[0013] Further, the pin seat includes a center pin fixed to the upper part of the center pin sleeve. The shock absorber mounting seat is fixed to the side wall of the center pin, and the drawbar seat is fixed to the side wall of the center pin sleeve. The draw points of the two groups of drawbars are located at a lower position of the pin seat, improving the stability of the traction device.

[0014] Further, a pair of crossbeam hanging seats are fixedly provided at positions corresponding to the first crossbeam on the second crossbeam. When the crossbeam hanging seat on the first crossbeam is damaged, the drawbar can be quickly replaced and installed on the crossbeam hanging seat on the second crossbeam. Since the draw point is relatively low, it is possible to avoid interference between the drawbar after changing the position and the secondary lateral shock absorber.

[0015] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the following beneficial effects can be achieved:

[0016] (1) The present invention provides a bogie traction device. By changing the arrangement mode of the drawbar and the secondary lateral shock absorber, the lateral installation space is saved. When the bogie traction device is applied to narrow-gauge vehicles, the distance between the limit beam and the side beam is shortened. Compared with the traditional single drawbar traction device and the "Z"-shaped traction device, in the present application, the installation space of the secondary lateral shock absorber is located between the two limit beams, and the distance between the two limit beams is not affected by the change of the distance between the limit beam and the side beam, and it can be better applied to the bogie of narrow-gauge vehicles. By increasing the internal installation space of the bogie, more options are provided for the selection of the secondary lateral shock absorber, thereby improving the lateral stiffness of the vehicle and enhancing the ride comfort.

[0017] (2) The present invention provides a bogie traction device. The drawbars are arranged in parallel on the first crossbeam and jointly form a quadrilateral structure with the pin seat. The draw point is relatively low. When passing through a curve, the rubber joints of the drawbars allow the quadrilateral structure to deform under force, and at the same time, the lateral stop seat on the limit beam also restricts the large-angle displacement of the traction device, ensuring the ride comfort and safety of the vehicle during operation.

[0018] (3) The present invention provides a bogie traction device, which is provided with two groups of parallel traction tie rods. When one group fails, the other group can still continue to work, improving the operation reliability. When the crossbeam hanging seat on the first crossbeam is damaged, the traction tie rod can be quickly replaced onto the second crossbeam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the bottom view of the embodiment of the present invention;

[0020] Figure 2 is the installation schematic diagram of the pin seat and the traction tie rod of the embodiment of the present invention;

[0021] Figure 3 is the bottom view of the traction device in the embodiment of the present invention;

[0022] Figure 4 is the bottom view of the frame in the embodiment of the present invention;

[0023] Figure 5 is the structural schematic diagram of the traction tie rod in the embodiment of the present invention;

[0024] Figure 6 is the bottom view of the "Z"-shaped traction device;

[0025] Figure 7 is the bottom view of the single tie rod traction device.

[0026] In all the drawings, the same reference numerals represent the same technical features, specifically: 1, the first elastic rubber joint; 2, the traction tie rod; 3, the bolt; 4, the crossbeam hanging seat; 5, the tie rod seat; 6, the shock absorber mounting seat; 7, the second elastic rubber joint; 8, the secondary lateral shock absorber; 9, the shock absorber hanging seat; 10, the pin seat; 11, the lateral stop seat; 12, the limit beam; 13, the first crossbeam; 14, the longitudinal beam; 15, the motor suspension seat; 16, the gearbox suspension seat; 17, the second crossbeam; 18, the third elastic rubber joint; 19, the fourth elastic rubber joint; 101, the center pin; 102, the center pin sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] As Figures 1-4As shown in the figure, this embodiment provides a bogie traction device. For the convenience of description, the vehicle traveling direction is defined as the longitudinal direction, and the direction perpendicular to the traveling direction is defined as the transverse direction. The bogie frame includes two longitudinal beams 14 arranged in parallel along the longitudinal direction of the vehicle, and a pair of cross beams fixed between the two longitudinal beams 14 along the transverse direction, namely the first cross beam 13 and the second cross beam 17. There are two limiting beams 12 arranged along the longitudinal direction between the first cross beam 13 and the second cross beam 17. The cross beams and the limiting beams 12 are the installation bases of the traction device. A pin seat 10 for connecting the car body is arranged at the center of the frame. Specifically, the pin seat 10 is located at the center enclosed by the two cross beams and the two limiting beams 12. The traction device connects the pin seat 10 and the frame, and suppresses the relative vibration between the pin seat 10 and the frame during vehicle operation.

[0029] As Figure 1 shown in the figure, the traction device includes two sets of traction tie rods 2 arranged along the longitudinal direction, and secondary lateral dampers 8 arranged along the transverse direction. Both the traction tie rods 2 and the secondary lateral dampers 8 are hinged to the pin seat 10. Figure 1 As shown in the figure, it is defined here that the first cross beam 13 and the second cross beam 17 are respectively located on the front and rear sides of the pin seat 10. "C-C" is the center line passing through the center of the pin seat 10 and perpendicular to the two limiting beams 12. The area on the side of the first cross beam 13 along "C-C" is the first area, and the area on the side of the second cross beam 17 along "C-C" is the second area. The two sets of traction tie rods 2 are arranged in the first area, and the secondary lateral dampers 8 are arranged in the second area.

[0030] Preferably, as Figure 1 shown in the figure, the secondary lateral dampers 8 are arranged in the area enclosed by "C-C", the two limiting beams 12, and the second cross beam 17 in the second area.

[0031] Furthermore, a first elastic rubber joint 1 and a second elastic rubber joint 7 are respectively arranged at both ends of each set of traction tie rods 2. The traction tie rods 2 are provided with holes for interference fit with the first elastic rubber joint 1 and the second elastic rubber joint 7. Two cross beam hanging seats 4 are arranged on the first cross beam 13, and two traction rod seats 5 are correspondingly arranged on the pin seat 10. The two cross beam hanging seats 4 are respectively fixed to the first elastic rubber joints 1 on the two sets of traction tie rods 2. The second elastic rubber joints 7 on the two sets of traction tie rods 2 are fixed to the traction rod seats 5, and the traction rod seats 5 are fixed to the pin seat 10. Two cross beam hanging seats 4 are also arranged at the corresponding positions on the second cross beam 17 as those on the first cross beam 13. When the cross beam hanging seat 4 on the first cross beam 13 is damaged, it can be quickly replaced and installed on the second cross beam 17.

[0032] Preferably, threaded through holes are arranged at both ends of the first elastic rubber joint 1, and the threaded through holes are fixed to the cross beam hanging seat 4 or the traction rod seat 5 through bolts 3.

[0033] Furthermore, a shock absorber mounting seat 6 is fixed to the rear side of the pin seat 10. The shock absorber mounting seat 6 is transversely offset on the rear side of the pin seat 10. The shock absorber mounting seat 6 is arranged longitudinally away from the first cross beam 13 and towards the second cross beam 17. A shock absorber hanging seat 9 is fixed to one of the limiting beams 12 that is farther away from the shock absorber mounting seat 6. That is, the secondary lateral shock absorber 8 extends along the transverse direction towards one of the limiting beams 12 that is farther away. Holes are provided at both ends of the secondary lateral shock absorber 8 and are in interference fit with the third elastic rubber joint 18 and the fourth elastic rubber joint 19 respectively. The third elastic rubber joint 18 is fixedly connected to the shock absorber hanging seat 9, and the fourth elastic rubber joint 19 is fixedly connected to the shock absorber mounting seat 6, realizing the elastic hinged connection of both ends of the secondary lateral shock absorber 8 to the pin seat 10 and the limiting beam 12 respectively. Furthermore, transverse stop seats 11 are arranged on one side of the two limiting beams 12 facing the pin seat 10. When the pin seat 10 swings greatly transversely, the pin seat 10 is limited when it contacts the transverse stop seats 11.

[0034] Furthermore, as Figure 2 shown, the pin seat 10 includes a center pin 101 fixed to the upper part of the center pin sleeve 102. A shock absorber mounting seat 6 is welded to the side wall of the center pin 101, and a drawbar seat 5 is welded to the center pin sleeve 102.

[0035] Furthermore, when the limiting beam 12, the first cross beam 13, the longitudinal beam 14, and the second cross beam 17 are fabricated into a frame, the joints of each beam are fixed by welding. A motor suspension seat 15 is welded to the first cross beam 13, and a gearbox suspension seat 16 is welded to the second cross beam 17. The motor suspension seat 15 and the gearbox suspension seat 16 are respectively used to mount the drive motor and the gearbox.

[0036] The structural features of this traction device are as follows: Two groups of traction tie rods 2 are arranged longitudinally and are parallelly arranged on the first cross beam 13 in front of the pin seat 10. The secondary lateral shock absorber 8 is arranged behind the pin seat 10 and is connected to the limiting beam 12 through the shock absorber mounting seat 6. The two groups of traction tie rods 2 connect the first cross beam 13 and the pin seat 10. The formed parallelogram structure can allow a certain deformation under the action of the first elastic rubber 1, improving the stability of the vehicle when cornering. For narrow-gauge vehicles, the lateral space of the bogie is limited. By arranging the two groups of traction tie rods 2 on the same side close to the first cross beam 13, a larger installation space and more model selection options are provided for the secondary lateral shock absorber 8.

[0037] The working principle of this traction device is as follows: When the vehicle is running, the traction or braking force generated by the bogie is transmitted to two sets of traction tie rods 2 through the crossbeam, and then transmitted to the car body through the pin seats 10 after passing through the traction tie rods 2. When the vehicle goes around a curve, the elastic rubber joints 1 at both ends of the traction tie rods 2 will produce elastic deformation, and the two sets of traction tie rod devices will present a parallelogram force-bearing state. At the same time, the lateral force acts on the secondary lateral damper 8 through the limit beam 12 and the shock absorber suspension seat 9. Due to the damping effect of the secondary lateral damper 8, the relative vibration between the pin seat 10 and the frame is effectively suppressed, thereby improving the smoothness of the vehicle when running around a curve. At the same time, the lateral stop seat 11 on the limit beam 12 restricts the large-angle swing of the traction device, ensuring the smoothness and safety of the vehicle operation.

[0038] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bogie traction device, comprising a pin seat (10) arranged at the center of the bogie frame. The bogie frame includes a pair of longitudinal beams (14) arranged longitudinally, and a first cross beam (13) and a second cross beam (17) fixed transversely between the two longitudinal beams (14). Two limiting beams (12) are fixed longitudinally between the first cross beam (13) and the second cross beam (17), characterized in that, The pin seat (10) is elastically hinged to the first cross beam (13) through two sets of traction tie rods (2) arranged longitudinally. On the side of the pin seat (10) facing away from the traction tie rods (2), a secondary lateral shock absorber (8) is transversely offset. The secondary lateral shock absorber (8) extends along the transverse direction towards the farther one of the limiting beams (12). Both ends of the secondary lateral shock absorber (8) are elastically hinged to the limiting beam (12) and the pin seat (10) respectively.

2. The bogie traction device according to claim 1, wherein, A lateral stop seat (11) is arranged on the side of the limiting beam (12) facing the pin seat (10).

3. The bogie traction device according to claim 1, characterized in that, Interference fits are respectively provided at both ends of the traction tie rod (2) with a first elastic rubber joint (1) and a second elastic rubber joint (7). The first elastic rubber joint (1) is fixed to the first cross beam (13), and the second elastic rubber joint (7) is fixed to the pin seat (10).

4. The bogie traction device according to claim 3, characterized in that, A cross beam hanging seat (4) is fixedly arranged on the first cross beam (13), and the first elastic rubber joint (1) is fixed to the cross beam hanging seat (4).

5. The bogie traction device according to claim 3, characterized in that, A traction rod seat (5) is fixedly arranged on the pin seat (10), and the second elastic rubber joint (7) is fixed to the traction rod seat (5).

6. The bogie traction device according to claim 1, characterized in that, Interference fits are respectively provided at both ends of the secondary lateral shock absorber (8) with a third elastic rubber joint (18) and a fourth elastic rubber joint (19). The third elastic rubber joint (18) is fixed to the limiting beam (12), and the fourth elastic rubber joint (19) is fixed to the pin seat (10).

7. The bogie traction device according to claim 6, characterized in that, A shock absorber mounting seat (6) is fixedly arranged at the rear side of the pin seat (10), and the fourth elastic rubber joint (19) is fixed to the shock absorber mounting seat (6).

8. The bogie traction device according to claim 6, characterized in that, A shock absorber hanging seat (9) is correspondingly arranged on the limiting beam (12), and the third elastic rubber joint (18) is fixed to the shock absorber hanging seat (9).

9. A bogie traction device according to any one of claims 1-8, characterized in that, The pin seat (10) includes a center pin (101) fixed to the upper part of a center pin sleeve (102). The shock absorber mounting seat (6) is fixed to the side wall of the center pin (101), and the traction rod seat (5) is fixed to the side wall of the center pin sleeve (102).

10. A bogie traction device according to claim 9, characterized in that, A pair of the cross beam hanging seats (4) are fixedly arranged at the corresponding positions on the second cross beam (17) to the first cross beam (13).

Images