AU2018445294B2 - Railway wagon bogie vibration damping device capable of providing composite vibration damping force - Google Patents
Railway wagon bogie vibration damping device capable of providing composite vibration damping force Download PDFInfo
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- AU2018445294B2 AU2018445294B2 AU2018445294A AU2018445294A AU2018445294B2 AU 2018445294 B2 AU2018445294 B2 AU 2018445294B2 AU 2018445294 A AU2018445294 A AU 2018445294A AU 2018445294 A AU2018445294 A AU 2018445294A AU 2018445294 B2 AU2018445294 B2 AU 2018445294B2
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- damping
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- vibration damping
- oblique wedge
- guide seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
Abstract
Disclosed is a railway wagon bogie vibration damping device capable of providing a composite vibration damping force. The vibration damping device is composed of a wide-body inclined wedge vibration damping part mounted on an upper plane (12) of the bottom of an inclined wedge groove at an end part of a swing bolster (21), and a spring vibration damping part mounted on a lower plane (13) of the bottom of the inclined wedge groove at the end part of the swing bolster, wherein the inclined wedge vibration damping part is connected to the spring vibration damping part via a guide seat (3). A contact friction area of an inclined wedge (1) is large. A lower vibration damping spring (4) is additionally arranged between the inclined wedge (1) and a side frame, so that the frictional resistance where a vehicle is fully loaded is increased. An upper vibration damping spring (2) and the lower vibration damping spring (4) are used in different vertical spaces. The vibration damping device has a simple and compact structure, is easy to manufacture, mount, maintain and repair, realizes the characteristic of a "stable" vibration damping performance in no-load and full-load conditions, also realizes the characteristics of an improved bogie rhombus deformation "control" capability and an improved snake motion stability, and plays an important role in improving the technical performance and operation quality of a railway wagon three-piece bogie, thereby reducing the abrasion of parts of the vehicle and reducing vehicle manufacturing, application and maintenance costs.
Description
Railway Wagon Bogie Damping Device Capable of Providing A Composite Damping Force
Technical Field
The present invention belongs to the technical field of designing railway vehicle accessories, and belongs to the technical field suitable for designing railway wagon bogie damping devices with great axle loads and great operating speeds in particular, especially relating to a railway wagon bogie damping device capable of providing a composite damping force.
Background Art
For quite a long time, due to a great quantity and a low operating speed, mechanical friction damping devices which enjoy simple structures, low costs, and convenient manufacture and maintenance are used in most railway wagon bogies. At present, wedge-type friction damping devices with constant friction resistance and wedge-type friction damping devices with variable friction resistance are generally used in railway wagon cast steel three-big-piece bogies. A bogie damped with the previous manner is referred to as a "control-type" bogie, and a bogie damped with the latter manner is referred to as a "stable-type" bogie.
The control spring of a "control-type" bogie is the damping spring of a damping device, referred to as an upper damping spring in the present invention. After pre-compressed, the spring is mounted on the upper plane of the base plate of the oblique wedge groove on an end portion of a swing bolster, and only provides a damping force to the bogie not a bearing capacity. As the pre-compression deflection of the control spring is not changed, the friction damping resistance provided will not change as the bearing load of the bogie changes. The top end of the damping spring of the "stable-type" bogie wedge-type friction damping device is in contact with the lower plane of the oblique wedge, and the lower end is located on the platform-bearing surface of a side frame. The damping spring provides a damping force and also bears loads. The friction damping resistance presents a linear proportional relationship with the vertical displacement of the damping spring as the bearing load of the bogie changes. The relative friction coefficient of the "stable-type" bogie when not loaded and that when fully loaded are approximately equal. Thus, the bogie does not have different damping effects when not loaded and fully loaded, and is always "stable".
The oblique wedge of a wedge-type damping device with constant friction resistance is a wide-body oblique wedge which can better "control" rhomboid deformation of the bogie, and has better effects on improving the stability of the snake movement of the bogie. However, as the damping resistance is a constant, the wedge-type damping device with constant friction resistance cannot be adapted to the requirements for the damping performance under the operating conditions of different vehicle loads. In particular, as the axle load increases, the self-weight coefficient is increasingly smaller. The wedge-type damping device with constant friction resistance readily has excessively large damping resistance when not loaded, and has insufficient damping resistance when fully loaded. In case of excessively large damping resistance, the impact of a line rail on a wheel set will be directly delivered to the vehicle body, causing that the vibration acceleration of the vehicle is too great and the operation quality thereof is deteriorating. Meanwhile, the abrasion of parts of respective friction pairs of a bogie is also accelerated. Insufficient damping resistance cannot effectively inhibit the amplitude increase when the vehicle is resonant, and the snake movement of the bogie has a poor stability. Although the damping resistance of the wedge-type damping device with variable friction resistance changes as the bearing load changes, the oblique wedge structure thereof generally cannot be designed to be a wide-body oblique wedge due to effects of factors such as spatial arrangement of a central bearing spring and a swing bolster structure. There is a small contact area between the oblique wedge, and the swing bolster and side frame, and the friction surface of an oblique wedge pair and the swing bolster have a small contact area in particular, causing that the bogie has insufficient capability for placing a side frame and a swing bolster at normal positions by relying on an oblique wedge. Therefore, a "stable-type" bogie using a wedge-type damping device with variable friction resistance must depend on other mechanisms or other methods to improve rhomboid deformation resistance of the bogie, thereby improving the stability of snake movement of the bogie.
A wedge-type damping device with constant friction resistance and a wedge-type damping device with variable friction resistance have respective characteristics and have respective advantages and disadvantages. If a novel wedge-type friction damping device can be designed such that the device has respective advantages of the two friction damping devices above, and can also overcome respective defects at the same time. That is, the damping device has the characteristic of "stable" damping performance when the wedge-type damping device with variable friction resistance is not loaded and fully loaded, and also has the characteristics of the wedge-type damping device with constant friction resistance, i.e., better "controlling" rhombus deformability and better stability of snake movement of a bogie. In this case, the technical performance and operation quality of a conventional railway wagon three big-piece bogie will be greatly improved and enhanced, and the abrasion of the vehicle parts will be greatly reduced and the costs of manufacture, operation and maintenance of the vehicle will also be reduced.
Summary of the Invention
With regard to the problems above, the present invention provides a railway wagon bogie wedge-type friction damping device which enjoys a simple structure, reliable performance, and convenient operation and maintenance, has respective advantages of wedge-type damping devices with variable friction resistance and wedge-type damping devices with constant friction resistance, and provides damping resistance in different modes under the operating conditions of different vehicle loads.
The present invention is realized by means of the following technical solutions:
In the railway wagon bogie damping device capable of providing a composite damping force, a bogie comprises a swing bolster, and is placed on a side frame through a central suspension spring; the damping device is mounted on an end portion of the swing bolster, characterized in: the damping device consists of two parts, i.e. a wide-body oblique wedge damping portion mounted on the upper plane at the bottom of the oblique wedge groove on an end portion of the swing bolster and a spring damping portion mounted on the lower plane at the bottom of an oblique wedge groove on the end portion of the swing bolster. The oblique wedge damping portion is coupled to a spring damping portion through a guide seat.
The oblique wedge damping portion comprises an oblique wedge and an upper damping spring. The spring damping portion comprises a lower damping spring. The upper plane on the base plate of the guide seat is provided with three top pillars which pass through a guide seat mounting hole on the base plate of the oblique wedge groove on an end portion of the swing bolster, and is rigidly fastened with an oblique wedge by means of a locking bolt and a spring washer. The upper damping spring is located between an oblique wedge lumen and the upper plane at the bottom of the oblique wedge groove. The lower plane of the base plate of the guide seat is provided with a positioning column. The upper end of the lower damping spring is limited and nested with a positioning column, and the lower end thereof falls on the platform-bearing surface of a central suspending spring.
Three top pillars provided on the upper plane of the base plate of the guide seat are in clearance fit with a guide seat mounting hole on the base plate of the oblique wedge groove on an end portion of the swing bolster. There is a gap between the upper plane of the base plate of the guide seat and the lower plane of the base plate of the oblique wedge groove on the end portion of the swing bolster.
There is a gap between the upper plane of the lower damping spring and the lower plane of the base plate of the guide seat.
The positioning column on the lower plane of the base plate of the guide seat is assured to reach into an inner diameter hole of the lower damping spring when the bogie is in a free state, and there is a gap between vertical planes of the inner diameter hole of the lower damping spring and the positioning column of the guide seat.
The lower damping spring is a structure jointly supported by an inner circular spring and an outer circular spring.
A circular limiting bump is provided on the platform-bearing surface of the central suspending spring on the lower end of the lower damping spring, and the lower end of the lower damping spring falls within a circular limiting raised ring.
The damping devices in the present invention are symmetrically mounted on both sides of an end portion of a swing bolster. Both ends of each swing bolster are mounted with four groups of the damping devices.
A damping device in the present invention comprises an oblique wedge, an upper damping spring, a guide seat, a lower damping spring, as well as a locking bolt and a spring washer for connecting and fastening the oblique wedge and the guide seat. This damping device cooperates with a swing bolster, a side frame and a central suspending spring of a conventional railway wagon three-big-piece bogie to form a mechanical friction damping system for a bogie. When a vehicle is not loaded, the central suspending spring of the damping system bears a vehicle load, and after pre-compressed, the upper damping spring mounted within the oblique wedge groove of the swing bolster provides friction resistance. As the bogie-bearing load changes, the damping friction is not maintained as a constant. When the vehicle is fully loaded, the upper damping spring is compressed and deformed to continue to provide damping friction resistance. Besides, as the vehicle loads increase, the lower damping spring between a side frame and an oblique wedge is also acted by loads, and provides another part of damping friction resistance when compression and deformation of the central suspending spring have gone beyond the vertical height difference between the same and the guide seat. The lower damping spring is also a bearing spring at the same time. Thus, this part of damping friction resistance changes as the bearing load of the bogie changes, and presents a directly proportional relationship with the vertical displacement of the lower damping spring.
As compared with the prior art, the present invention has the following beneficial effects:
A wide-body oblique wedge is used. A large contact friction area of the oblique wedge can enhance connection of a swing bolster with a side frame of a bogie such that the bogie has better capabilities for position correction, improves diamond stiffness resistance of the bogie, and can effectively "control" the rhomboid deformation of the bogie, thereby improving stability of the snake movement of the bogie. As for conventional "stable-type" bogies, use of a wide-body oblique wedge can reduce mechanisms that increase diamond stiffness resistance of the bogie with other manners and simplify the bogie structure.
A lower damping spring is added between an oblique wedge and a side frame, and a certain vertical height difference is arranged between the oblique wedge and the lower damping spring such that a part of damping resistance is provided when a vehicle is fully loaded, which increases the friction resistance when the vehicle is fully loaded. Meanwhile, the newly added friction resistance changes as the vehicle loads change. Thus, this improves the problem, namely, the friction resistance and relative friction coefficient are too small when a conventional "control-type" bogie is fully loaded, and as for the damping ability, operating conditions when a vehicle is not loaded and fully loaded cannot be taken into consideration.
A design where an upper damping spring and a lower damping spring are disposed in different vertical spaces is used in the present invention. The space sizes of both of them are not interfered with each other. The lower damping spring has a great external dimension and space and many options for stiffness are great, and can better realize the design intention of damping performance.
In the present invention, three threaded connection holes are added only on the oblique wedge structure of a conventional wedge-type friction damping devices with constant friction resistance, and the ways for assembling an oblique wedge and an upper damping spring thereof are maintained constant. After the oblique wedge and the upper damping spring are press fitted, a guide seat is mounted again. A top pillar of the guide seat is close fitted with a bolt seat of the oblique wedge. When the device is fully loaded, a locking bolt only bears a part of vertical force. The manner for mounting the lower damping spring is the same as that for mounting a central suspending spring. Hence, the mounting method in the present invention is simple and reliable. When a bogie of a conventional wedge-type friction damping devices with constant friction resistance is mounted, only a small change in the oblique wedge groove structure of an end portion of the swing bolster can satisfy the requirements for mounting and application.
The structure in the present invention is simple and compact, and facilitates manufacture, mounting and maintenance, enjoying characteristics of "stable" damping performance when the vehicle is not loaded and when fully loaded, and also enjoying the characteristics of better "controlling" rhombus deformability and better stability of snake movement of a bogie. This plays an important role in enhancing and improving technical performance and operation quality of a railway wagon three-big-piece bogie, reducing abrasion of vehicle parts, and reducing costs for manufacturing, operating and maintaining the vehicle.
Brief Description of the Drawings
Figure 1 is a schematic diagram of a positive isometric structure in the present invention;
Figure 2 is a full section view of the longitudinal center direction in the present invention;
Figure 3 is a schematic diagram of the structure of an oblique wedge, i.e. elevated axonometric view, in the present invention;
Figure 4 is a schematic diagram of the structure of a guide seat, i.e. positive isometric view, in the present invention;
Figure 5 is a schematic diagram of a modified structure for mounting the oblique wedge groove on an end portion of a swing bolster, i.e. positive isometric view, in the present invention;
Figure 6 is a schematic diagram of the structure mounted on the bogie in the present application, wherein an end of the swing bolster is a half-section main view.
Signs in the figures:
1 indicates an oblique wedge; 1.1 indicates a nose portion; 1.2 indicates the lower plane of a top portion; 1.3 indicates a secondary friction surface; 1.4 indicates a primary friction surface; 1.5 indicates a bolt seat; 2 indicates an upper damping spring; 3 indicates a guide seat; 3.1 indicates a top pillar; 3.2 indicates a positioning column; 3.3 indicates the lower plane of a base plate; 3.4 indicates the upper plane of a base plate; 4 indicates a lower damping spring; indicates a locking bolt; 6 indicates a spring washer; 11 indicates a guide seat mounting hole; 12 indicates the upper plane at the bottom of an oblique wedge groove; 13 indicates the lower plane at the bottom of an oblique wedge groove; 21 indicates a swing bolster; 22 indicates a central suspending spring; 23 indicates a side frame; 24 indicates a locking bolt and a nut of the upright column wear plate; 25 indicates an upright column wear plate for a side frame.
Embodiments
The present invention was further explained by combining embodiments which further explained the principles of the present invention, and did not limit the present invention in any manner. The technical features that were identical or similar to the present invention had not gone beyond the scope of the protection of the present invention.
The figures were combined.
In a railway wagon bogie damping device capable of providing a composite damping force, a bogie comprised a swing bolster 21 and was placed on a side frame 23 through a central suspending spring 22. The damping device was mounted on an end portion of the swing bolster 21. The damping device consisted of two parts, i.e. a wide-body oblique wedge damping portion mounted on the upper plane 12 at the bottom of the oblique wedge groove on an end portion of the swing bolster and a spring damping portion mounted on the lower plane 13 at the bottom of the oblique wedge groove on an end portion of the swing bolster.
The oblique wedge damping portion was coupled to the spring damping portion by means of guide seat 3.
The oblique wedge damping portion comprised an oblique wedge 1 and an upper damping spring 2. The spring damping portion comprised a lower damping spring 4. The upper plane 3.4 of the base plate of the guide seat 3 was provided with three top pillars 3.1 which passed through the guide seat mounting hole 11 on the base plate of the oblique wedge groove on the end portion of the swing bolster 21, and were rigidly fastened with the oblique wedge by means of a locking bolt 5 and a spring washer 6. The upper damping spring 2 was located between an oblique wedge lumen and the upper plane 12 at the bottom of the oblique wedge groove. The lower plane 3.3 of the base plate of the guide seat was provided with a positioning column 3.2. The upper end of the lower damping spring 4 was limited and nested with a positioning column 3.2, and the lower end thereof fell on the platform-bearing surface of the central suspending spring 22.
Three top pillars 3.1 provided on the upper plane 3.4 of the base plate of the guide seat 3 were in clearance fit with the guide seat mounting hole 11 on the base plate of the oblique wedge groove on the end portion of the swing bolster 21. There was a gap between the upper plane 3.4 on the base plate of the guide seat 3 and the lower plane 13 on the base plate of the oblique wedge groove on the end portion of the swing bolster 21.
There was a gap between the upper plane of the lower damping spring 4 and the lower plane 3.3 on the base plate of the guide seat 3.
The positioning column 3.2 on the lower plane 3.3 of the base plate of the guide seat 3 was assured to reach into an inner diameter hole of the lower damping spring 4 when the bogie was in a free state, and there was a gap between vertical planes of the inner diameter hole of the lower damping spring 4 and the positioning column 3.2 of the guide seat 3.
The lower damping spring 4 may be a structure jointly supported by an inner circular spring and an outer circular spring, and may also be a structure supported by a single spring.
A circular limiting bump was provided on the platform-bearing surface of the central suspending spring 22 on the lower end of the lower damping spring 4, and the lower end of the lower damping spring 4 fell within a circular limiting raised ring.
Damping devices in the present invention were symmetrically mounted in two groups on both sides of an end portion of the swing bolster. Both ends of each swing bolster were mounted with four groups of the damping devices.
As shown in Figures 1 and 2, a railway wagon bogie damping device capable of providing a composite damping force comprised an oblique wedge 1, an upper damping spring 2, a guide seat 3, a lower damping spring 4, a locking bolt 5, a spring washer 6, and so forth, and served as a railway wagon three-big-piece bogie damping device to form a bogie damping system together with a side frame 23, a swing bolster 21 and a central suspending spring.
As shown in Figure 3, the oblique wedge 1 was a wide-body oblique wedge with the middle part hollowed out. Secondary friction surfaces 1.3 on both sides were lower than the middle nose portion 1.1. Bolt seats 1.5 were casted on the underside of the oblique wedge, the lower end of the nose portion 1.1, the inner side of the primary friction surface 1.4 and two pairs of friction surfaces 1.3, respectively. A threaded hole with a certain depth was finished on a bolt seat 1.5.
As shown in Figure 4, the guide seat 3 was an integral cast steel structure or a forged group welding structure. The upper plane 3.4 on the base plate thereof was provided thereon with three top pillars 3.1 corresponding to the bolt seats 1.5 of the oblique wedge 1. The center of a top pillar 3.1 was opened with a through hole, due to which, it was easy for the locking bolt to pass through the through hole such that the guide seat 3 and the bolt seat 1.5 of the oblique wedge 1 were fastened. The structure of a positioning column 3.2 was provided at the center of the lower plane 3.3 of the base plate, mainly having an effect of mounting the lower damping spring 4 in place.
As shown in Figure 5, when the guide seat 3 and the oblique wedge 1 were assembled, the oblique wedge 1 was mounted within the oblique wedge groove at an end portion of the swing bolster 21 in advance. The base plate of the guide seat 3 was mounted on the lower side of the base plate of the swing bolster 21. The base plate of the oblique wedge groove on an end portion of the swing bolster 21 must correspond to a top pillar 3.1 of the guide seat 3 where a through hole is opened as a guide seat mounting hole 11, and it was ensured that the top pillar 3.1 had as a certain amount of movement in the longitudinal and lateral directions within the guide seat mounting hole 11.
As shown in Figure 6, when the present invention was mounted to a bogie, the upper damping spring 2 was first mounted in the middle hollowed part of the oblique wedge 1, and one end of the upper damping spring 2 was pressed against the lower plane 1.2 on the top of the oblique wedge 1, and then was pressed as a whole within the oblique wedge groove at an end portion of the assembled swing bolster 21. The oblique wedge 1 and the upper damping spring 2 were fastened within the oblique wedge groove at an end portion of the swing bolster 21 by using a process locating pin. Afterward, three top pillars 3.1 of the guide seat 3 corresponded to bolt seats 1.5 of the oblique wedge 1 through a guide seat mounting hole 11 at the oblique wedge groove of the swing bolster 21. The guide seat 3 was fastened on the oblique wedge 1 with a locking bolt 5 and a spring washer 6. At this time, there was a vertical clearance 6 between the upper plane 3.4 of the seat plate of the guide seat 3 and the lower plane 13 at the bottom of the oblique wedge groove on an end portion of the swing bolster. If 6 did not comply with the requirements for design, gaskets with different thicknesses could be mounted at the place where a top pillar 3.1 of the guide seat 3 was in contact with a bolt seat 1.5 of the oblique wedge 1 for adjustment. After the damping system parts at the remaining three places on the swing bolster 21 were mounted, the swing bolster 21 was embedded within the central box on both side frames, and the central suspension spring 22 and the lower damping spring 4 were mounted according to the method for assembling a conventional three-big-piece bogie. After the central suspension spring 22 and the lower damping spring 4 were mounted, the swing bolster 21 fell down, and a process pin for fixing an oblique wedge 1 was taken out. After acted by an opposite force from the upper damping spring 2, the oblique wedge 1 moved towards the upper side and outside of the swing bolster 21 such that a main friction surface 1.4 and a secondary friction surface 1.3 were close fitted with an upright column wear plate 25 for a side frame and a splayed wear plate of the swing bolster, respectively. At this time, there was a vertical height difference AH between the lower damping spring 4 and the lower plane 3.3 of the base plate of the guide seat 3. AH was gradually decreasing after the vehicle was acted by loads. After AH was decreased to 0, the lower damping spring 4 would be affected by loads. The loads would be delivered to the oblique wedge 1 through the guide seat 3 such that the friction resistance on the oblique wedge 1 was increasing, which increased the relative friction coefficient of the bogie after the vehicle loads were increased, and improved damping performance of the bogies.
As another embodiment of the damping device above, a counterbore was provided at the center of a top pillar 3.1 of the guide seat 3. The guide seat 3 and the oblique wedge 1 were fastened by means of a countersunk screw. At this time, except the positioning column 3.2, the lower plane 3.3 of the base plate of the guide seat was a planar structure, which could increase the height of the lower damping spring 4, thereby improving the deflection of the lower damping spring 4. In addition, the lower damping spring 4 may also be designed to be jointly supported by an inner circular spring and an outer circular spring in light of needs to improve the frictional resistance of a heavy duty vehicle.
Claims (7)
1. A railway wagon bogie damping device capable of providing a composite damping force, where a bogie comprises a swing bolster, and is placed on a side frame through a central suspension spring; the damping is mounted on an end portion of the swing bolster, characterized in: the damping device consists of two parts, i.e. a wide-body oblique wedge damping portion mounted on the upper plane at the bottom of the oblique wedge groove on an end portion of the swing bolster and a spring damping portion mounted on the lower plane at the bottom of the oblique wedge groove on an end portion of the swing bolster, and the oblique wedge damping portion is coupled to a spring damping portion through a guide seat, and wherein the oblique wedge damping portion comprises an oblique wedge and an upper damping spring; the spring damping portion comprises a lower damping spring; the upper plane on the base plate of the guide seat is provided with three top pillars which pass through a guide seat mounting hole on the base plate of the oblique wedge groove on the end portion of the swing bolster, and is rigidly fastened with an oblique wedge by means of a locking bolt and a spring washer; the upper damping spring is located between an oblique wedge lumen and the upper plane at the bottom of the oblique wedge groove; the lower plane of the base plate of the guide seat is provided with a positioning column; the upper end of the lower damping spring is limited and nested with a positioning column, and the lower end thereof falls on the table-bearing surface of the central suspending spring.
2. The railway wagon bogie damping device capable of providing a composite damping force according to claim 1, characterized in: three top pillars provided on the upper plane of the base plate of the guide seat are in clearance fit with the guide seat mounting hole on the base plate of the oblique wedge groove on an end portion of the swing bolster, and there is a gap between the upper plane of the base plate of the guide seat and the lower plane of the base plate of the oblique wedge groove on an end portion of the swing bolster.
3. The railway wagon bogie damping device capable of providing a composite damping force according to claim 1, characterized in: there is a gap between the upper plane of the lower damping spring and the lower plane of the base plate of the guide seat.
4. The railway wagon bogie damping device capable of providing a composite damping force according to claim 3, characterized in: a positioning column on the lower plane of the base plate of the guide seat is assured to reach into an inner diameter hole of the lower damping spring when the bogie is in a free state, and there is a gap between vertical planes of the inner diameter hole of the lower damping spring and the positioning column of the guide seat.
5. The railway wagon bogie damping device capable of providing a composite damping force according to claim 4, characterized in: the lower damping spring is a structure jointly supported by an inner circular spring and an outer circular spring.
6. The railway wagon bogie damping device capable of providing a composite damping force according to claim 4, characterizing in: a circular limiting bump was provided on the platform-bearing surface of the central suspending spring on the lower end of the lower damping spring, and the lower end of the lower damping spring falls within a circular limiting raised ring.
7. The railway wagon bogie damping device capable of providing a composite damping force according to any of claims 1 to 6, characterized in: a total of two groups of the damping devices are symmetrically mounted on both sides of an end portion of the swing bolster, and four groups of the damping devices are mounted on both ends of each swing bolster.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174538.9 | 2018-10-09 | ||
| CN201811174538.9A CN109094595B (en) | 2018-10-09 | 2018-10-09 | Railway wagon bogie vibration damping device capable of providing composite vibration damping force |
| PCT/CN2018/115546 WO2020073420A1 (en) | 2018-10-09 | 2018-11-15 | Railway wagon bogie vibration damping device capable of providing composite vibration damping force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2018445294A1 AU2018445294A1 (en) | 2021-03-04 |
| AU2018445294B2 true AU2018445294B2 (en) | 2023-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2018445294A Active AU2018445294B2 (en) | 2018-10-09 | 2018-11-15 | Railway wagon bogie vibration damping device capable of providing composite vibration damping force |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109094595B (en) |
| AU (1) | AU2018445294B2 (en) |
| WO (1) | WO2020073420A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301462A (en) * | 2020-03-16 | 2020-06-19 | 成都工业学院 | Railway wagon bogie with normal friction and variable friction wedge damping performance |
| CN112124348B (en) * | 2020-09-27 | 2022-02-01 | 成都工业学院 | Assembly method of railway wagon control type bogie damping device |
| CN114152451B (en) * | 2021-11-10 | 2023-06-06 | 柳州铁道职业技术学院 | Steering power detection device and method for quick truck bogie |
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| US7571684B2 (en) * | 2001-08-01 | 2009-08-11 | National Steel Car Limited | Rail road freight car with damped suspension |
| CN102514584A (en) * | 2011-12-09 | 2012-06-27 | 南车眉山车辆有限公司 | Bogie of narrow gauge railway vehicle |
| CN102556098A (en) * | 2012-01-13 | 2012-07-11 | 南车长江车辆有限公司 | Variable friction control type oscillating damper of rail wagon |
| CN203332129U (en) * | 2013-07-22 | 2013-12-11 | 济南轨道交通装备有限责任公司 | Framework-type bogie damping device |
| CN107244332A (en) * | 2017-07-24 | 2017-10-13 | 中车齐齐哈尔车辆有限公司 | Railway goods train bogie |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209037580U (en) * | 2018-10-09 | 2019-06-28 | 中车眉山车辆有限公司 | A kind of railway goods train bogie vibration absorber can provide combined vibration-damping power |
-
2018
- 2018-10-09 CN CN201811174538.9A patent/CN109094595B/en active Active
- 2018-11-15 WO PCT/CN2018/115546 patent/WO2020073420A1/en active Application Filing
- 2018-11-15 AU AU2018445294A patent/AU2018445294B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7571684B2 (en) * | 2001-08-01 | 2009-08-11 | National Steel Car Limited | Rail road freight car with damped suspension |
| CN102514584A (en) * | 2011-12-09 | 2012-06-27 | 南车眉山车辆有限公司 | Bogie of narrow gauge railway vehicle |
| CN102556098A (en) * | 2012-01-13 | 2012-07-11 | 南车长江车辆有限公司 | Variable friction control type oscillating damper of rail wagon |
| CN203332129U (en) * | 2013-07-22 | 2013-12-11 | 济南轨道交通装备有限责任公司 | Framework-type bogie damping device |
| CN107244332A (en) * | 2017-07-24 | 2017-10-13 | 中车齐齐哈尔车辆有限公司 | Railway goods train bogie |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109094595A (en) | 2018-12-28 |
| WO2020073420A1 (en) | 2020-04-16 |
| AU2018445294A1 (en) | 2021-03-04 |
| CN109094595B (en) | 2020-08-21 |
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