Three-axle welding bogie and railway vehicle

Abstract

The invention discloses a three-axle welding bogie and a railway vehicle. The three-axle welding bogie comprises a framework assembly, a suspension vibration reduction system, a foundation braking device and a weighing device. The framework assembly is connected with the wheel set assembly through the suspension vibration reduction systems and the axle box assembly, and the suspension vibration reduction systems are of double-side Leynolds vibration reduction structures and are located on the two sides of the axle box assembly respectively. A load balancing device is connected between every two adjacent suspension damping systems, and the top of each load balancing device is connected with the bottom of a side beam of the framework assembly. The weighing device is installed on a side beam of the framework assembly and connected with the suspension vibration reduction system through a load conversion base. The basic braking device adopts a double-side brake shoe braking device; according to the axle box round spring suspension vibration reduction system, the vibration reduction performance of the bogie is improved, the curve trafficability of the bogie is improved, and meanwhile the weighing function is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of bogies, and in particular to a three-axle welded bogie and a rail vehicle. Background Art

[0002] Railway freight cars generally use four-axle vehicles with two two-axle bogies, but the maximum load capacity of the two-axle bogie is limited by the axle weight. The total weight of existing four-axle vehicles is generally less than 100t (load capacity is about 70t), which cannot meet the needs of transporting heavy goods such as steel coils, rails or special equipment. Since increasing the load of bogie axles is limited by line conditions, the railway freight car can increase the load by increasing the number of two-axle bogies. However, the increase in the number of bogies increases the overall manufacturing cost of the vehicle and also brings difficulties to maintenance; the other way is to increase the number of bogie axles, such as three-axle bogies.

[0003] Traditional three-axle bogies mostly adopt a leaf spring suspension structure. The prior art discloses a three-axle bogie with leaf spring suspension, in which only one set of leaf spring suspension systems is arranged on each side of the wheel assembly, both ends of the leaf spring suspension system are connected to the leaf spring connecting seats on the frame assembly, the middle of the bottom is connected to the top of each axle box group, and the frame assembly is composed of a frame structure surrounded by two side beams and two end beams, thereby improving the integrity of the frame assembly and ensuring the bearing capacity of the three-axle bogie; although this three-axle bogie has a simple structure, it has poor vibration reduction performance and poor curve passing ability; in addition, due to the problem of uneven load of the suspension system that is easily caused by line / frame deformation, there is a problem of excessive load on some axles, and the three-axle bogie cannot realize the weighing function. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a three-axle welded bogie and a rail vehicle, which adopt an axle box round spring suspension vibration reduction system to enhance the vibration reduction performance of the bogie, improve the bogie's ability to pass curves, and at the same time, realize a weighing function.

[0005] The technical solution of the present invention is as follows:

[0006] In the first aspect of the present invention, a three-axle welded bogie is provided, comprising a frame component, a suspension vibration reduction system, a basic braking device and a weighing device; the frame component is connected to a wheel pair component via a suspension vibration reduction system and an axle box component, the suspension vibration reduction system adopts a double-sided Linol vibration reduction structure, which is respectively located on both sides of the axle box component; a load balancing device is connected between two adjacent suspension vibration reduction systems, and the top of the load balancing device is connected to the bottom of the side beam of the frame component; the weighing device is installed on the side beam of the frame component, and the weighing device is connected to the suspension vibration reduction system via a load conversion seat; the basic braking device adopts a double-sided brake shoe braking device.

[0007] In some embodiments of the present invention, the frame composition includes a frame structure formed by two double-web side beams and two end beams, the two side beams are plugged into two groups of cross beams, the two groups of cross beams are plugged into the longitudinal beams, and the cross beams and the end beams are connected by a braking longitudinal beam.

[0008] In some embodiments of the present invention, the middle upper part of the side beam is connected to an elastic side bearing assembly, and the elastic side bearing assembly includes a side bearing body, a side bearing seat and a side bearing spring. The side bearing body is connected to the upper part of the side bearing seat through the side bearing spring, a stopper is provided at the bottom of the side bearing seat, one end of the side bearing body is connected to the mounting seat through a spring connecting plate, and the mounting seat is fixed on the side beam.

[0009] In some embodiments of the present invention, a tooth plate is provided on the mounting seat, the spring connecting plate is connected to the mounting seat via the tooth plate, and serrated grooves are provided on the mating surfaces of the side bearing body and the spring connecting plate and on the mating surfaces of the spring connecting plate and the tooth plate.

[0010] In some embodiments of the present invention, the longitudinal beam is a four-web structure with a hole in the middle for arranging the basic braking device, and the top center of the longitudinal beam is connected to the spherical center disk.

[0011] In some embodiments of the present invention, the suspension vibration reduction system includes an outer circular spring and an inner circular spring, the outer circular spring is sleeved on the outside of the inner circular spring, a spring cap is arranged on the top of the outer circular spring, a lifting ring pin is arranged on the spring cap, a top is arranged on the end of the spring cap, the top is facing the axle box, the lifting ring pin faces outward, and a lifting ring is sleeved on the lifting ring pin.

[0012] In some embodiments of the present invention, the load balancing device includes two load balancing guide frames, a balancing body and a pedestal body, wherein the pedestal body is arranged in the upper middle position of the balancing body, and the pedestal body is connected to the bottom of the side beam; the two load balancing guide frames are respectively connected to the two ends of the balancing body, and the load balancing guide frames are connected to the lifting ring of the suspension vibration reduction system through a lifting ring pin.

[0013] In some embodiments of the present invention, one end of the load conversion seat is connected to the guide frame through a round pin, and the other end is connected to the spring cap through a lifting pin and a lifting ring. The top of the load conversion seat is a spherical structure that cooperates with the bottom spherical surface of the weighing valve of the weighing device.

[0014] In some embodiments of the present invention, the basic braking device includes a brake shoe, a brake shoe support, a brake beam and a safety lock; the brake shoe is installed on the brake shoe support, the brake shoe support is connected to the lever through the brake beam, the basic braking devices on both sides of the same wheel are connected through a connecting rod, and the basic braking devices of adjacent wheels are connected through a pull rod.

[0015] In a second aspect of the present invention, a rail vehicle is provided, comprising the three-axle welded bogie described in the first aspect.

[0016] One or more technical solutions of the present invention have the following beneficial effects:

[0017] (1) In the three-axle welded bogie provided by the present invention, the load balancing device is connected to the spherical surface of the mounting seat in the middle of the side beam through the middle pedestal body, and is connected to the suspension vibration reduction system through the load balancing guide frames at both ends of the load balancing device, so that the load of the side beam is transmitted to the outer spring and the inner spring of the suspension vibration reduction system. The load balancing device can transmit the load of the frame side beam to the adjacent wheelset through the suspension vibration reduction system of the adjacent wheelset, thereby achieving balanced adjustment of the wheel loads of adjacent wheelsets (front and rear), effectively balancing the uneven load problem of the suspension system caused by line / frame deformation, and avoiding the problem of excessive load on some axles.

[0018] (2) The three-axle welded bogie provided by the present invention eliminates the longitudinal gap through the spring connecting plate structure composed of elastic side bearings, achieves zero longitudinal play, and eliminates the longitudinal impact of the side bearings during vehicle operation; through the set load conversion seat, under the premise that the Linol shock absorber does not change, the vertical load on one side of the axle box is fully transferred to the weighing valve, thereby realizing the weighing function.

[0019] (3) The three-axle welded bogie provided by the present invention adopts double-sided Linol shock absorbers as the vibration reduction devices, which reduces the longitudinal positioning stiffness of the wheelset, greatly improves the curve passing ability of the bogie, and enhances the vibration reduction performance of the bogie; the double-sided brake shoe braking device is adopted as the basic braking device. Under the premise that the total brake shoe pressure remains unchanged, the pressure per unit area of ​​the brake shoe is smaller, thereby extending the service life of the wheel and the brake shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of a three-axle welded bogie in Example 1 of the present invention;

[0021] Figure 2 is a top view of a three-axle welded bogie in Example 1 of the present invention;

[0022] Figure 3 is a schematic structural diagram of a longitudinal beam in Embodiment 1 of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the elastic side bearing assembly in Example 1 of the present invention;

[0024] Figure 5 is a top view of the elastic side bearing assembly in Example 1 of the present invention;

[0025] Figure 6 is a schematic diagram of the internal structure of the suspension vibration reduction system in Example 1 of the present invention;

[0026] Figure 7is a schematic diagram of the external structure of the suspension vibration reduction system in Example 1 of the present invention;

[0027] Figure 8 is a schematic diagram of the interface structure of the weighing device in Example 1 of the present invention;

[0028] Fig. 9 is a schematic diagram of the connection of the load conversion seat in Example 1 of the present invention;

[0029] Fig.10 is a schematic diagram of the structure of the load balancing device in Embodiment 1 of the present invention;

[0030] Fig.11 is a schematic diagram of the connection between the load balancing device and the suspension vibration reduction system in Embodiment 1 of the present invention;

[0031] Fig.12 It is a schematic diagram of the external structure of the basic braking device in Example 1 of the present invention.

[0032] In the figure: 1. frame composition; 2. wheelset composition; 3. suspension damping system; 4. axle box composition; 5. basic brake device; 6. load balancing device; 7. weighing device; 101. side beam; 102. cross beam; 103. longitudinal beam; 104. first brake longitudinal beam composition; 105. second brake longitudinal beam composition; 106. end beam; 107. elastic side bearing composition; 108. spherical center plate; 111. side bearing body; 112. side bearing seat; 113. side bearing spring; 114. stopper; 115. spring connecting plate; 116. mounting seat; 1 17. Tooth plate; 121. Load conversion seat; 122. First lifting eye pin; 123. Round pin; 124. Guide frame; 301. Spring cap; 302. Outer circular spring; 303. Inner circular spring; 304. Top; 305. Lifting eye; 306. Second lifting eye pin; 501. Hanging rod; 502. Lever; 503. Connecting rod; 504. Pull rod; 505. Brake shoe support; 506. Brake shoe; 507. Brake beam; 508. Safety lock; 601. Load balancing guide frame; 602. Balancing body; 603. Abutment body; 701. Weighing valve. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] Example 1

[0035] In a typical embodiment of the present invention, a three-axle welded bogie is provided, such as Figures 1 to 12As shown, it includes a frame component 1, a suspension vibration reduction system 3, a basic braking device 5 and a weighing device 7; the frame component 1 is connected to the wheelset component 2 through the suspension vibration reduction system 3 and the axle box component 4, and the suspension vibration reduction system 3 adopts a double-sided Linol vibration reduction structure, which is respectively located on both sides of the axle box component 4; a load balancing device 6 is connected between two adjacent suspension vibration reduction systems 3, and the top of the load balancing device 6 is connected to the bottom of the side beam of the frame component 1; the weighing device 7 is installed on the side beam of the frame component, and the weighing device 7 is connected to the suspension vibration reduction system 3 through a load conversion seat 121; the basic braking device 5 adopts a double-sided brake shoe braking device.

[0036] like Figure 2 As shown, the frame component 1 includes a frame structure formed by two double-web side beams 101 and two end beams 106, the two side beams 101 are plugged with two groups of cross beams 102, the two groups of cross beams 102 are plugged with longitudinal beams 103, and the cross beams and the end beams are connected to a brake longitudinal beam component, which includes a first brake longitudinal beam component 104 and a second brake longitudinal beam component 105.

[0037] like Figure 3 As shown, the longitudinal beam 103 is a four-web structure with a hole in the middle for arranging the basic brake device 5. The top center of the longitudinal beam 103 is connected to the spherical center plate 108. The longitudinal beam 103 adopts a four-web structure to improve the overall strength of the frame component 1.

[0038] like Figure 2 As shown, the middle upper part of the side beam 101 is connected to the elastic side bearing 107, as shown in FIG. Figure 4 and Figure 5 As shown, the elastic side bearing assembly 107 includes a side bearing body 111, a side bearing seat 112 and a side bearing spring 113. The side bearing body 111 is connected to the upper part of the side bearing seat 112 through the side bearing spring 113. A stopper 114 is provided at the bottom of the side bearing seat 112. One end of the side bearing body 111 is connected to a mounting seat 116 through a spring connecting plate 115. The mounting seat 116 is fixed on the side beam 101. The elastic side bearing assembly 107 eliminates the longitudinal gap and the longitudinal impact of the side bearing during vehicle operation by means of the spring connecting plate 115 structure.

[0039] Furthermore, a tooth plate 117 is provided on the mounting seat 116, the spring connecting plate 115 is connected to the mounting seat 116 via the tooth plate 117, and a serrated groove is provided on the mating surface of the side bearing body 111 and the spring connecting plate 115, and on the mating surface of the spring connecting plate 115 and the tooth plate 117. The serrated groove can increase the connection mating surface with the spring connecting plate 115, and prevent the bolt from being sheared.

[0040] like Figure 6 and Figure 7As shown, the suspension damping system 3 includes an outer spring 302 and an inner spring 303, wherein the outer spring 302 is sleeved on the outside of the inner spring 303, a spring cap 301 is arranged on the top of the outer spring 302, a second lifting ring pin 306 is arranged on the spring cap 301, a top 304 is arranged at the end of the spring cap 301, the top 304 faces the axle box component 4, the second lifting ring pin 306 faces outward, and a lifting ring 305 is sleeved on the second lifting ring pin 306. Since the lifting ring 305 is arranged at a certain angle, the spring cap 301 will generate a longitudinal load while balancing the vertical load of the outer spring 302, so that the top 304 presses the axle box component 4, so that during the operation of the vehicle, vertical and lateral friction damping forces are generated between the top 304 and the axle box component 4. In addition, the use of double-sided Linol shock absorbers improves the vibration reduction performance of the bogie, retains appropriate longitudinal and lateral clearances, and improves the curve passing ability of the bogie.

[0041] like Figure 8 As shown, a weighing device interface is provided at the end of the side beam 101, a weighing valve is installed in the weighing device interface, and the transfer of the weighing load is realized through the load conversion seat 121; Fig. 9 As shown, one end of the load conversion seat 121 is connected to the guide frame 124 through a round pin 123, and the other end is connected to the spring cap 301 through a second lifting ring pin 306 and a lifting ring 305. The top of the load conversion seat 121 is a spherical structure that matches the bottom spherical surface of the weighing valve 701 of the weighing device 7. The load of the outer spring 302 is transmitted to the load conversion seat 121 and the weighing valve 701 through the second lifting ring pin 306, the lifting ring 305, and the first lifting ring pin 122. When weighing the vehicle, the inner spring 303 contacts the lower bearing surface of the load conversion seat 121, transmits the load of the inner spring 303, and transmits it to the weighing valve 701, so as to realize the weighing control of the bogie. The weighing valve 701 is connected to the auxiliary air cylinder and the distribution valve in the vehicle body brake through a pipeline to realize the stepless adjustment of the brake pressure.

[0042] like Fig.10 and Fig.11 As shown, the load balancing device 6 includes two load balancing pedestals 601, a balancing body 602 and a pedestal body 603. The pedestal body 603 is arranged in the middle of the upper part of the balancing body 602, and the pedestal body 603 is spherically connected to the mounting seat in the middle of the bottom of the side beam 101; the two load balancing pedestals 601 are respectively connected to the two ends of the balancing body 602, and the load balancing pedestals 601 are connected to the suspension ring 305 of the suspension vibration reduction system 3 through the suspension ring pin 306. The load balancing pedestals 601 at both ends are connected to the suspension ring 306 of the suspension vibration reduction system 3, so as to transfer the load of the side beam 101 to the outer spring 302 and the inner spring 303 of the suspension vibration reduction system. The load balancing device 6 can effectively balance the uneven load of the suspension system caused by line / frame deformation, etc., and avoid the problem of excessive load on some axles.

[0043] like Fig.12 As shown, the basic brake device 5 includes a suspension rod 501, a lever 502, a connecting rod 503, a pull rod 504, a brake shoe support 505, a brake shoe 506, a brake beam 507, and a safety lock 508; the brake shoe 506 is installed on the brake shoe support 505, and the brake shoe support 505 is connected to the lever 502 through the brake beam 507. The basic brake devices on both sides of the same wheel are connected through the connecting rod 503, and the basic brake devices of adjacent wheels are connected through the pull rod 504. With the double-sided brake shoe braking structure, under the premise that the total brake shoe pressure remains unchanged, the pressure per unit area of ​​the brake shoe is small, thereby extending the service life of the wheel and the brake shoe.

[0044] Example 2

[0045] A typical embodiment of the present invention provides a rail vehicle, comprising the three-axle welded bogie described in Example 1.

[0046] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A three-axle welded bogie, characterized in that: It includes a frame component, a suspension vibration reduction system, a basic braking device and a weighing device; the frame component is connected to the wheel pair component through the suspension vibration reduction system and the axle box component, and the suspension vibration reduction system adopts a double-sided Linol vibration reduction structure, which is respectively located on both sides of the axle box component; a load balancing device is connected between two adjacent suspension vibration reduction systems, and the top of the load balancing device is connected to the bottom of the side beam of the frame component; the weighing device is installed on the side beam of the frame component, and the weighing device is connected to the suspension vibration reduction system through a load conversion seat; the basic braking device adopts a double-sided brake shoe braking device.

2. The three-axle welded bogie according to claim 1, characterized in that: The frame structure comprises a frame structure formed by two double web side beams and two end beams, the two side beams are plugged with two groups of cross beams, the two groups of cross beams are plugged with longitudinal beams, and the cross beams and end beams are connected to form a braking longitudinal beam.

3. The three-axle welded bogie according to claim 2, characterized in that: The middle upper part of the side beam is connected to an elastic side bearing component, and the elastic side bearing component includes a side bearing body, a side bearing seat and a side bearing spring. The side bearing body is connected to the upper part of the side bearing seat through the side bearing spring, and a stopper is arranged at the bottom of the side bearing seat. One end of the side bearing body is connected to a mounting seat through a spring connecting plate, and the mounting seat is fixed on the side beam.

4. The three-axle welded bogie according to claim 3, characterized in that: A toothed plate is arranged on the mounting seat, the spring connecting plate is connected to the mounting seat via the toothed plate, and sawtooth grooves are arranged on the matching surfaces of the side bearing body and the spring connecting plate, and on the matching surfaces of the spring connecting plate and the toothed plate.

5. The three-axle welded bogie according to claim 2, characterized in that: The longitudinal beam is a four-web structure with a hole in the middle for arranging a basic braking device, and the top center of the longitudinal beam is connected to a spherical center plate.

6. The three-axle welded bogie according to claim 1, characterized in that: The suspension vibration reduction system includes an outer circular spring and an inner circular spring. The outer circular spring is sleeved on the outside of the inner circular spring. A spring cap is arranged on the top of the outer circular spring. A lifting ring pin is arranged on the spring cap. A top is arranged on the end of the spring cap. The top faces the axle box. The lifting ring pin faces outward. A lifting ring is sleeved on the lifting ring pin.

7. The three-axle welded bogie according to claim 6, characterized in that: The load balancing device includes two load balancing guide frames, a balancing body and a pedestal body, wherein the pedestal body is arranged in the upper middle position of the balancing body, and the pedestal body is connected to the bottom of the side beam; the two load balancing guide frames are respectively connected to the two ends of the balancing body, and the load balancing guide frames are connected to the lifting ring of the suspension vibration reduction system through a lifting ring pin.

8. The three-axle welded bogie according to claim 6, characterized in that: One end of the load conversion seat is connected to the guide frame through a round pin, and the other end is connected to the spring cap through a lifting ring pin and a lifting ring. The top of the load conversion seat is a spherical structure that matches the bottom spherical surface of the weighing valve of the weighing device.

9. The three-axle welded bogie according to claim 1, characterized in that: The basic braking device includes a brake shoe, a brake shoe support, a brake beam and a safety lock; the brake shoe is installed on the brake shoe support, the brake shoe support is connected to the lever through the brake beam, the basic braking devices on both sides of the same wheel are connected through a connecting rod, and the basic braking devices of adjacent wheels are connected through a pull rod.

10. A rail vehicle, characterized in that: It comprises a three-axle welded bogie as described in any one of claims 1-9.

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