Central traction node for bogie

Abstract

The utility model relates to a center traction node for a bogie, which comprises a rigid outer sleeve, a rigid inner sleeve coaxially arranged with the rigid outer sleeve is mounted in an inner cavity of the rigid outer sleeve, and a rubber damping layer is connected between the inner wall of the rigid outer sleeve and the outer wall of the rigid inner sleeve in a vulcanization manner. A silk screen is embedded in the inner side wall of the rubber damping layer and fixedly connected with the inner wall of the rubber damping layer, and due to the fact that the inner wall of the rubber damping layer is connected with the silk screen, after the rubber damping layer is aged and cracked, the shape of the rubber damping layer can be kept through the silk screen, and the strength of the whole rubber damping layer is improved; baffles are fixedly connected to the peripheral sides of the two ends of the rigid inner sleeve in a clamped mode through annular clamping grooves, a plurality of limiting rods are arranged in observation windows formed in the baffles at intervals, and after the rubber damping layers are broken, the baffles can be matched with the limiting rods to prevent the broken rubber damping layers from falling off from the ends of the rigid inner sleeve; and the stability and the comfort degree of the train during running are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of product structure design of railway vehicle bogie, and particularly relates to a center traction node for bogie. BACKGROUND

[0002] The center traction node is one of important components of the bogie, mainly provides elastic connection for the traction rod and the frame, provides longitudinal force, and adapts to various movements of the bogie and the vehicle body, including torsion of the bogie and the frame.

[0003] The existing center traction node is generally composed of a metal outer sleeve, a metal inner sleeve and a middle rubber layer, and the rubber layer may be cracked, have rubber peeling and rubber dropping after long-time use due to aging and extrusion deformation, if the rubber layer falls off during the running of the train, not only the damping function is lost, the train running stability is reduced, the comfort of passengers is affected, but also the bogie structure is unstable, the risk of train failure during running is increased, and certain safety hazards exist. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a center traction node for bogie which has simple structure and reasonable design to solve the above problems.

[0005] The utility model achieves the above-mentioned purposes through the following technical solutions:

[0006] A center traction node for bogie, comprising a rigid outer sleeve, a rigid inner sleeve coaxially arranged in the inner cavity of the rigid outer sleeve, a rubber damping layer vulcanization connected between the inner wall of the rigid outer sleeve and the outer wall of the rigid inner sleeve, a wire mesh embedded in the inner side wall of the rubber damping layer, the wire mesh being fixedly connected with the inner wall of the rubber damping layer, the rigid inner sleeve protruding from the outer side of the end portion of the rigid outer sleeve at both ends, an annular clamping groove being formed in the end portion of the rigid inner sleeve, a baffle being arranged at both ends of the rigid inner sleeve, the inner diameter of the baffle being the same as the inner diameter of the annular clamping groove, the outer diameter of the baffle being larger than the inner diameter of the rigid outer sleeve, and the baffle being clamped and fixed with the end portion of the rigid inner sleeve through the annular clamping groove.

[0007] As a further optimization scheme of the utility model, an accommodating groove in annular structure is formed in the inner wall of the middle segment of the rigid outer sleeve, an annular flange with a size matching the inner cavity of the accommodating groove is formed by the outer wall of the middle segment of the rubber damping layer, and the annular flange is embedded in the inner part of the accommodating groove.

[0008] As a further optimization scheme of the utility model, the wire mesh is in a cylindrical structure, the wire mesh is embedded in the inner part of the inner wall of the rubber damping layer, and the wire mesh is vulcanization connected with the inner part of the rubber damping layer.

[0009] As a further optimization scheme of the utility model, the annular clamping groove is arranged with a gap between the side wall of the rigid outer sleeve end side and the rigid outer sleeve.

[0010] As a further optimization scheme of the utility model, the baffle is annular structure, and a notch is arranged on one side of the baffle.

[0011] As a further optimization scheme of the utility model, a plurality of observation holes are arranged annularly on the baffle, the plurality of observation holes are equidistantly distributed, a limiting rod is arranged in the observation hole in intervals, one end of the limiting rod is fixed with the inner wall of the observation hole, and the other end of the limiting rod extends into the rigid outer sleeve and abuts against the end of the rubber shock-absorbing layer.

[0012] The utility model discloses the beneficial effect lies in: because the inner wall of rubber shock-absorbing layer is connected with wire mesh, after rubber shock-absorbing layer aging cracking, can keep the shape of rubber shock-absorbing layer through wire mesh, improve the strength of overall rubber shock-absorbing layer, and the rigid inner sleeve both ends circumferential side are connected with the baffle through annular clamping groove clamping fixedly, a plurality of limiting rods are arranged in the observation window on the baffle in intervals, when rubber shock-absorbing layer breaks, can prevent the rubber shock-absorbing layer after breaking from falling off from the rigid inner sleeve end through the cooperation of baffle and limiting rod, greatly improve the stability and comfort when train travels. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure explosion map of the utility model;

[0014] Figure 2 It is the cross section structure schematic diagram of rigid outer sleeve and rigid inner sleeve of the utility model;

[0015] Figure 3 It is the three-dimensional structure schematic diagram of rigid inner sleeve of the utility model;

[0016] Figure 4 It is the connection structure schematic diagram of rubber shock-absorbing layer and wire mesh of the utility model;

[0017] Figure 5 It is the installation structure schematic diagram of baffle and limiting rod of the utility model.

[0018] In the drawing: 1, rigid outer sleeve;2, accommodating groove;3, rigid inner sleeve;4, rubber shock-absorbing layer;5, annular flange;6, wire mesh;7, annular clamping groove;8, baffle;9, notch;10, observation hole;11, limiting rod. DETAILED DESCRIPTION

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example

[0021] like Figure 1 - Figure 5 As shown, a central traction node for a bogie includes a rigid outer sleeve 1, a rigid inner sleeve 3 coaxially arranged in the inner cavity of the rigid outer sleeve 1, and a rubber damping layer 4 vulcanized between the inner wall of the rigid outer sleeve 1 and the outer wall of the rigid inner sleeve 3. The rubber damping layer 4 can dampen vibrations to reduce vibrations and impacts during train operation and improve passenger comfort.

[0022] The inner wall of the middle section of the rigid jacket 1 is provided with a ring-shaped receiving groove 2. The outer wall of the middle section of the rubber damping layer 4 extends outward to form an annular flange 5 that matches the size of the inner cavity of the receiving groove 2. The annular flange 5 is embedded in the receiving groove 2. The receiving groove 2 is provided to receive the annular flange 5 formed by the outward extension of the middle section of the rubber damping layer 4. The setting of the annular flange 5 can lock the rubber damping layer 4, prevent the rubber damping layer 4 from detaching from the rigid jacket 1, and increase the contact surface between the rubber damping layer 4 and the rigid jacket 1, so as to improve the stability of the installation of the rubber damping layer 4.

[0023] A wire mesh 6 is embedded in the inner wall of the rubber damping layer 4. The wire mesh 6 has a cylindrical structure and is embedded in the inner wall of the rubber damping layer 4. The wire mesh 6 is vulcanized and connected to the inside of the rubber damping layer 4. When the rubber damping layer 4 ages and cracks due to compression, the cracked rubber damping layer 4 can be connected by the wire mesh 6 to maintain the shape of the rubber damping layer 4 and avoid the broken part from separating from the main body as much as possible.

[0024] Both ends of the rigid inner sleeve 3 protrude outward from the outer side of the rigid outer sleeve 1. An annular groove 7 is provided at the end of the rigid inner sleeve 3. A gap is left between the side wall of the annular groove 7 near the end of the rigid outer sleeve 1 and the rigid outer sleeve 1. Both ends of the rigid inner sleeve 3 are provided with baffles 8. The inner diameter of the baffles 8 is the same as the inner diameter of the annular groove 7, and the outer diameter of the baffles 8 is larger than the inner diameter of the rigid outer sleeve 1. The baffles 8 are fixed to the end of the rigid inner sleeve 3 by the annular groove 7. Since a gap is left between the side wall of the annular groove 7 near the end of the rigid outer sleeve 1 and the rigid outer sleeve 1, after the baffles 8 are installed in the annular groove 7, the side of the baffles 8 near the rigid outer sleeve 1 and the end of the rigid outer sleeve 1 share the force with each other, which does not affect the rubber damping layer 4 from damping through deformation.

[0025] The baffle 8 is annular, one side of the baffle 8 is provided with a gap 9, the baffle 8 is made of elastic material, when installing, the baffle 8 is deformed by pulling the two ends of the baffle 8 to the two sides of the gap 9, then the baffle 8 is sleeved in the annular clamping groove 7, so that the baffle 8 is convenient to install and disassemble;

[0026] A plurality of observation holes 10 are annularly arranged on the baffle 8, the plurality of observation holes 10 are equidistantly distributed, so that the user can observe the state of the rubber damping layer 4 through the observation hole 10 without disassembling the baffle 8, the rubber damping layer 4 which is aged and damaged can be replaced in time, the limiting rods 11 are arranged in the observation hole 10 at intervals, one end of the limiting rod 11 is fixed with the inner wall of the observation hole 10, the other end of the limiting rod 11 extends into the rigid outer sleeve 1 and abuts against the end of the rubber damping layer 4, the limiting rod 11 can abut against the broken rubber damping layer 4, so that the displacement of the broken rubber damping layer 4 is prevented.

[0027] It should be noted that the center traction node for a bogie comprises the rigid outer sleeve 1, the rigid inner sleeve 3 coaxially arranged with the rigid outer sleeve 1, and the rubber damping layer 4 vulcanized and connected between the rigid outer sleeve 1 and the rigid inner sleeve 3, the wire mesh 6 is vulcanized and connected on the inner wall of the rubber damping layer 4, when the rubber damping layer 4 is cracked due to aging and extrusion, the cracked rubber damping layer 4 can be connected through the wire mesh 6, so that the shape of the rubber damping layer 4 is maintained, the broken part is prevented from being separated from the main body as much as possible, the strength of the overall rubber damping layer is improved, the baffle 8 is fixedly connected through the annular clamping groove 7 at both ends of the rigid inner sleeve 3, a plurality of limiting rods 11 are arranged in the observation hole 10 of the baffle 8 at intervals, when the rubber damping layer 4 is broken, the broken rubber damping layer 4 can be prevented from falling off from the end of the rigid inner sleeve 3 through the cooperation of the baffle 8 and the limiting rod 11, so that the stability and comfort of the train during driving are greatly improved.

[0028] The above-mentioned embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a plurality of modifications and improvements can be made, which belong to the protection scope of the present application.

Claims

1. A center draft node for a bogie, comprising a rigid outer sleeve (1) in which a rigid inner sleeve (3) is mounted coaxially with the rigid outer sleeve (1), a rubber damping layer (4) being vulcanized between the inner wall of the rigid outer sleeve (1) and the outer wall of the rigid inner sleeve (3), characterized in that: The gauze (6) is embedded in the inner wall of the rubber damping layer (4), and the gauze (6) is fixedly connected with the inner wall of the rubber damping layer (4); the rigid inner sleeve (3) protrudes outward from the end of the rigid outer sleeve (1), and the end of the rigid inner sleeve (3) is provided with an annular clamping groove (7); the two ends of the rigid inner sleeve (3) are provided with baffle plates (8), the inner diameter of the baffle plate (8) is the same as the inner diameter of the annular clamping groove (7), and the outer diameter of the baffle plate (8) is greater than the inner diameter of the rigid outer sleeve (1); the baffle plate (8) is clamped and fixed with the end of the rigid inner sleeve (3) through the annular clamping groove (7).

2. The center draft gudgeon for a bogie according to claim 1, characterized in that: The rigid outer sleeve (1) is provided with a receiving groove (2) in the middle section of the inner wall, and the rubber damping layer (4) is provided with a ring-shaped flange (5) extending outward from the outer wall of the middle section, which is matched with the inner cavity of the receiving groove (2).

3. The center draft gudgeon for a bogie as defined in claim 1, characterized in that: The gauze (6) is in a cylindrical structure, and the gauze (6) is embedded in the inner wall of the rubber damping layer (4), and the gauze (6) is vulcanized with the rubber damping layer (4).

4. The center draft gudgeon for a bogie as defined in claim 1, characterized in that: The annular clamping groove (7) is provided with a gap between the side wall of the rigid outer sleeve (1) and the rigid outer sleeve (1).

5. The center hanger draft gudgeon of claim 1 wherein: The baffle plate (8) is in an annular structure, and one side of the baffle plate (8) is provided with a notch (9).

6. The center draft gudgeon for a bogie as defined in claim 5, characterized in that: A plurality of observation holes (10) are arranged in the annular baffle plate (8), and the observation holes (10) are distributed at equal intervals; the limiting rods (11) are arranged in the observation holes (10) at intervals, one end of the limiting rod (11) is fixedly connected with the inner wall of the observation hole (10), and the other end of the limiting rod (11) extends into the rigid outer sleeve (1) and abuts against the end of the rubber damping layer (4).

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