Suspension device, bogie and rail vehicle

Abstract

The utility model discloses a suspension device, a bogie and a railway vehicle, the suspension device comprises an elastic piece arranged at the bottom of a framework, the far end of the elastic piece is provided with a mounting part, and the diameter of the mounting part is gradually reduced in the extending direction of the elastic piece; the mounting hole is formed in the axle box; the sleeve is arranged in the mounting hole in a sleeving manner, and an opening is formed in the sleeve in the axis direction; the fixing block is connected with one end, far away from the elastic piece, of the mounting hole; and the locking assembly is used for fixing the fixing block and the elastic piece. According to the suspension device, the bogie and the railway vehicle, compared with the prior art, the problems of shaking and frictional wear at the joint between the axle box and the framework can be avoided.

Description

Technical Field

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

[0002] Rail vehicles are an important link between cities and are gradually becoming the main means of transportation in cities. The bogies installed at the bottom of the carriages play the role of bearing and steering the car body. The buffering performance of the bogies directly affects the vibration of the carriages. The bogies usually include a frame, a wheelset, an axle box and a primary suspension device, in which the axle box is installed on the wheelset, and the primary suspension device is installed between the axle box and the frame. The quality of the primary suspension device directly affects the performance of the bogie.

[0003] The primary suspension devices in current urban rail vehicles mainly use primary suspension devices positioned by rubber axle boxes. Specifically, the longitudinal load between the frame and the axle box is transmitted through a conical rubber spring. However, there is a clearance fit between the conical rubber spring and the axle box, which causes the conical rubber spring to shake slightly relative to the axle box, aggravating the wear between the two. In more serious cases, there is a risk of loosening and falling off of the mounting bolts.

[0004] Therefore, there is an urgent need for a suspension device, a bogie and a rail vehicle that can fix the axle box and the conical rubber spring to avoid the problems of shaking, friction and wear between the two. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a suspension device, a bogie and a rail vehicle to avoid the problems of shaking and friction and wear at the connection between the axle box and the frame.

[0006] The technical solutions provided by this application are as follows:

[0007] A suspension device, comprising:

[0008] An elastic member is arranged at the bottom of the frame, a mounting portion is arranged at the distal end of the elastic member, and a diameter of the mounting portion gradually decreases along the extending direction of the elastic member;

[0009] A mounting hole is provided on the axle box;

[0010] A sleeve is sleeved in the mounting hole, and the sleeve has an opening along the axial direction;

[0011] A fixing block connected to an end of the mounting hole away from the elastic member;

[0012] A locking assembly for fixing the fixing block to the elastic member.

[0013] Preferably, a tapered inner hole that cooperates with the mounting portion is provided inside the sleeve. In the direction approaching the fixed block, the aperture of the tapered inner hole gradually increases.

[0014] Preferably, an interference fit exists between the sleeve and the mounting hole, and also between the tapered inner hole and the mounting portion.

[0015] Preferably, it further includes:

[0016] A mating hole provided inside the axle box and communicating with the mounting hole, with the fixed block sleeved inside the mating hole;

[0017] A convex block provided on the fixed block, with the outer diameter of the convex block adapted to the inner diameter of the mounting hole.

[0018] Preferably, the locking assembly includes:

[0019] Locking screws for connecting the fixed block and the mounting portion. There are two locking screws, and openings are provided at the heads of the locking screws;

[0020] Anti - detachment iron wire, which is used to pass through the openings to lock the two locking screws.

[0021] Preferably, the locking assembly further includes:

[0022] A first gasket provided between the end face of the fixed block and the bottom surface of the mating hole.

[0023] Preferably, it further includes:

[0024] A second gasket provided between the elastic member and the axle box.

[0025] Preferably, it further includes:

[0026] A mounting seat provided on one side of the axle box close to the frame for installing a vertical stop.

[0027] A bogie includes the suspension device described in any one of the above.

[0028] A rail vehicle includes the bogie described above.

[0029] The suspension device provided by the utility model is provided with an elastic member, a mounting hole and a sleeve, wherein the elastic member is provided at the bottom of the frame, a mounting portion is provided at the far end of the elastic member, the diameter of the mounting portion gradually decreases along the direction in which the elastic member extends, the mounting hole is provided on the axle box, the mounting hole and the mounting portion are used in conjunction with each other, in order to avoid shaking caused by a mounting gap between the mounting portion and the mounting hole, a sleeve is provided in the mounting hole, the sleeve is sleeved in the mounting hole, and the sleeve is provided with an opening along the axial direction, and the mounting portion is a conical structure, the mounting portion extends into the sleeve until the mounting portion fits with the inner surface of the sleeve, and the mounting portion stretches the sleeve to make the outer surface of the sleeve fit with the inner wall of the mounting hole. In this way, there is no mounting gap between the sleeve and the mounting portion, and between the sleeve and the mounting hole, and no shaking will occur between the elastic member and the axle box.

[0030] Secondly, in order to fix the elastic part to the axle box, a fixing block and a locking assembly are also provided, wherein the fixing block is arranged at one end of the mounting hole away from the elastic part, and the locking assembly is used to fix the fixing block to the elastic part. Since the fixing block and the locking assembly are provided, the mounting part can be prevented from detaching from the mounting hole.

[0031] It can be seen that, compared with the prior art, the suspension device in the embodiment of the utility model is arranged between the axle box and the frame, so as to avoid the problems of shaking, friction and wear at the connection.

[0032] The present application also provides a bogie, including the above-mentioned suspension device, which can also avoid shaking, friction and wear at the connection between the axle box and the frame.

[0033] The present application also provides a rail vehicle, including the above-mentioned bogie, which can also achieve the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a suspension device provided in an embodiment of the utility model;

[0036] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0037] Figure 3 A structural schematic diagram of a cross-sectional view of a sleeve provided in an embodiment of the utility model;

[0038] Figure 4 It is a schematic structural diagram of the top view of the sleeve provided by the embodiment of the present utility model;

[0039] Figure 5 It is a schematic structural diagram of the fixing block provided by the embodiment of the present utility model;

[0040] Figure 6 It is a schematic structural diagram of the axle box provided by the embodiment of the present utility model;

[0041] Figure 7 It is a schematic structural diagram of the elastic member provided by the embodiment of the present utility model.

[0042] Reference numerals: 1, frame; 2, elastic member; 21, mounting portion; 3, axle box; 31, mounting hole; 32, mating hole; 4, sleeve; 5, fixing block; 71, locking screw; 72, anti-loosening wire; 8, second gasket; 9, vertical stop. Specific embodiments

[0043] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0047] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0048] The embodiments of the present invention are written in a progressive manner.

[0049] like Figures 1 to 7 As shown, an embodiment of the utility model provides a suspension device, including: an elastic member 2 arranged at the bottom of a frame 1, a mounting portion 21 is arranged at the far end of the elastic member 2, and the diameter of the mounting portion 21 gradually decreases along the extending direction of the elastic member 2; a mounting hole 31 arranged on the axle box 3 and used in conjunction with the mounting portion 21; a sleeve 4 sleeved in the mounting hole 31, and the sleeve 4 has an opening along the axial direction; a fixing block 5 connected to the end of the mounting hole 31 away from the elastic member 2; and a locking assembly for fixing the fixing block 5 to the elastic member 2.

[0050] At present, suspension devices are widely used in various types of railway freight cars, passenger trains, EMUs, subways and other vehicles at home and abroad. Some suspension devices are mainly arranged between the frame 1 and the axle box 3 to reduce weight and adjust wheel weight deviation. The current primary suspension device mainly adopts a primary suspension device positioned by a rubber axle box 3. Specifically, the longitudinal load between the frame 1 and the axle box 3 is transmitted through a conical rubber spring, but the conical rubber spring and the axle box 3 are specifically clearance-matched, so that the conical rubber spring will have a slight shake relative to the axle box 3, which aggravates the wear between the two, and more seriously, there is a risk of loosening and falling off of the mounting bolts.

[0051] The suspension device provided by the present application is provided with an elastic member 2, a mounting hole 31 and a sleeve 4, wherein the elastic member 2 is provided at the bottom of the frame 1, a mounting portion 21 is provided at the far end of the elastic member 2, the diameter of the mounting portion 21 gradually decreases along the direction in which the elastic member 2 extends, the mounting hole 31 is provided on the axle box 3, the mounting hole 31 and the mounting portion 21 are used in conjunction with each other, in order to avoid the installation gap between the mounting portion 21 and the mounting hole 31 and the shaking, a sleeve 4 is provided in the mounting hole 31, the sleeve 4 is sleeved in the mounting hole 31, and the sleeve 4 is provided with an opening along the axial direction, and the mounting portion 21 is a conical structure, the mounting portion 21 extends into the sleeve 4 until the mounting portion 21 fits with the inner surface of the sleeve 4, and the mounting portion 21 stretches the sleeve 4 so that the outer surface of the sleeve 4 fits with the inner wall of the mounting hole 31. In this way, there is no installation gap between the sleeve 4 and the mounting portion 21, and between the sleeve 4 and the mounting hole 31, and no shaking occurs between the elastic member 2 and the axle box 3.

[0052] Secondly, in order to fix the elastic member 2 to the axle box 3, a fixing block 5 and a locking assembly are also provided, wherein the fixing block 5 is arranged at one end of the mounting hole 31 away from the elastic member 2, and the locking assembly is used to fix the fixing block 5 to the elastic member 2. Since the fixing block 5 and the locking assembly are provided, the mounting portion 21 can be prevented from detaching from the mounting hole 31.

[0053] It can be seen that, compared with the prior art, the suspension device in the embodiment of the utility model is arranged between the axle box 3 and the frame 1, so as to avoid the problems of shaking, friction and wear at the connection.

[0054] Further, as one of the implementation modes, the suspension device in the embodiment of the utility model further includes a tapered inner hole, wherein the tapered inner hole is arranged in the sleeve 4, and the tapered inner hole is used in conjunction with the mounting portion 21, and the diameter of the tapered inner hole gradually increases toward the direction close to the fixing block 5. The tapered inner hole cooperates with the tapered mounting portion 21, which can be more conducive to the assembly and disassembly of the elastic member 2.

[0055] As one specific implementation manner, the elastic member 2 in the embodiment of the utility model is specifically a conical metal rubber spring.

[0056] As one of the implementation modes, the sleeve 4 and the mounting hole 31, and the tapered inner hole and the mounting portion 21 in the embodiment of the utility model are both interference fit. The mounting portion 21 is inserted between the tapered inner holes and locked by the locking assembly. Under the action of the locking assembly, the mounting portion 21 is further pulled downward to make an interference fit between the mounting portion 21 and the tapered inner hole. Since the mounting portion 21 is a tapered structure, as the diameter of the mounting portion 21 increases, the sleeve 4 expands, so that the sleeve 4 and the mounting hole 31 are interference fit.

[0057] More specifically, the outer surface of the sleeve 4 in the present application is adapted to the shape of the inner surface of the mounting hole 31. The mounting hole 31 in the embodiment of the present utility model is specifically a cylindrical hole, and the outer surface of the sleeve 4 is specifically a cylindrical structure.

[0058] In the above structure, as one of the preferred embodiments, the suspension device in the embodiment of the present utility model further includes a mating hole 32. The mating hole 32 is provided in the axle box 3 and is in communication with the mounting hole 31. The fixing block 5 is sleeved in the mating hole 32. A convex block is provided on the fixing block 5, and the outer diameter of the convex block is adapted to the inner diameter of the mounting hole 31. The convex block is inserted into the mounting hole 31 to prevent the mounting portion 21 from disengaging from the sleeve 4, thereby playing a certain protective role. Further, the aperture of the mating hole 32 is larger than the aperture of the mounting hole 31, and the mating hole 32 and the mounting hole 31 are coaxially arranged.

[0059] Further, as one of the specific embodiments, the locking assembly in the embodiment of the present utility model includes locking screws 71. There are two locking screws 71, and the fixing block 5 and the mounting portion 21 are fixedly connected by the locking screws 71.

[0060] Furthermore, in order to avoid the loosening of the locking screws 71, as one of the more preferred embodiments, the locking assembly in the embodiment of the present utility model further includes an anti-loosening wire 72. Openings are provided at the heads of the locking screws 71, and the anti-loosening wire 72 is used to pass through the two openings to fix the locking screws 71.

[0061] Further, the fixing block 5 is placed in the mating hole 32, and there may be a gap between the end face of the fixing block 5 and the bottom surface of the mating hole 32. As one of the embodiments, the locking assembly in the embodiment of the present utility model further includes a first cushion block, and the first cushion block is provided between the fixing block 5 and the bottom surface of the mating hole 32. Based on the gap between the fixing block 5 and the bottom surface of the mating hole 32, the number of the first gaskets provided can be adaptively increased or decreased.

[0062] Further, as one of the preferred embodiments, the suspension device in the embodiment of the present utility model further includes a second gasket 8. The second gasket 8 is provided between the elastic member 2 and the axle box 3. Based on the gap between the elastic member 2 and the axle box 3, the number of the second gaskets 8 can be adaptively increased or decreased.

[0063] In the above structure, as one of the embodiments, the suspension device in the embodiment of the present utility model further includes a mounting seat. The mounting seat is provided on one side of the axle box 3 close to the frame 1, and the mounting seat is used for mounting a vertical stop 9, and the vertical stop 9 is used for limiting the frame 1.

[0064] The present application also provides a bogie, which includes the above-mentioned suspension device and can also avoid the problems of shaking and frictional wear at the connection between the axle box 3 and the frame 1.

[0065] Furthermore, two sets of suspension devices can be provided and are respectively arranged at both ends of the frame 1, so that the damping effect is better.

[0066] Furthermore, the suspension device claimed in the present application is specifically a primary suspension device.

[0067] Furthermore, the present application also provides a rail vehicle, which includes the above-mentioned bogie and can also avoid the problems of shaking and frictional wear at the connection between the axle box 3 and the frame 1.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suspension device, characterized in that: include: An elastic member (2) is arranged at the bottom of the frame (1), a mounting portion (21) being arranged at the distal end of the elastic member (2), and a diameter of the mounting portion (21) gradually decreases along the direction in which the elastic member (2) extends; A mounting hole provided on the axle box (3) and used in conjunction with the mounting portion (21); A sleeve (4) sleeved in the mounting hole, the sleeve (4) having an opening along the axial direction; A fixing block (5) disposed on an end of the mounting hole away from the elastic member (2) and connected thereto; A locking assembly for fixing the fixing block (5) to the elastic member (2).

2. The suspension device according to claim 1, characterized in that: The sleeve is provided with a tapered inner hole for use with the mounting portion (21), and the diameter of the tapered inner hole gradually increases in a direction approaching the fixing block (5).

3. The suspension device according to claim 2, characterized in that: There is an interference fit between the sleeve (4) and the mounting hole, and between the tapered inner hole and the mounting portion (21).

4. The suspension device according to claim 2, characterized in that: Also includes: A matching hole provided in the axle box (3) and communicating with the mounting hole, the fixing block (5) being sleeved in the matching hole; A protrusion is arranged on the fixing block, and the outer diameter of the protrusion is adapted to the inner diameter of the mounting hole.

5. The suspension device according to claim 4, characterized in that: The locking assembly comprises: a locking screw (71) for connecting the fixing block (5) and the mounting portion (21), wherein two locking screws (71) are provided, and the heads of the locking screws (71) are both provided with an opening; An anti-stripping wire (72) is used to pass through the opening so as to lock the two locking screws (71).

6. The suspension device according to claim 4, characterized in that: The locking assembly further comprises: A first gasket is arranged between the end surface of the fixing block (5) and the bottom surface of the matching hole.

7. The suspension device according to any one of claims 1 to 6, characterized in that: Also includes: A second gasket (8) is arranged between the elastic member (2) and the axle box (3).

8. The suspension device according to any one of claims 1 to 6, characterized in that: Also includes: A mounting seat is arranged on a side of the axle box (3) close to the frame (1) and is used to mount a vertical stopper (9).

9. A bogie, characterized in that: A suspension device comprising the suspension device according to any one of claims 1 to 8.

10. A rail vehicle, characterized in that: Including the bogie described in claim 9.

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