A rubber ring for sealing the equipment compartment of a train

Abstract

A rubber ring for sealing the equipment compartment of an EMU train belongs to the field of rail transit technology. The invention solves the problem that the existing rubber ring is prone to tearing and wear during the operation of the train, which leads to a short service life of the rubber ring. The rubber ring body is a pre-deformed structure, the longitudinal cross-section of the first connecting part and the longitudinal cross-section of the second connecting part are both T-shaped structures, and the first connecting part and one end of the rubber ring body, and the second connecting part and the other end of the rubber ring body are arranged in an I-shaped structure, the outer sleeve of the first connecting part is provided with a first metal kit, and the upper part of the rubber ring body, the first connecting part and the first metal kit are fixed to the bottom plate of the traction motor by bolts at the same time, the outer sleeve of the second connecting part is provided with a second metal kit, and the lower part of the rubber ring body, the second connecting part and the second metal kit are fixed to the equipment compartment by bolts at the same time.

Description

Technical Field

[0001] The invention relates to a rubber ring for sealing an equipment compartment of a motor vehicle group train, belonging to the technical field of rail transportation. Background Art

[0002] At present, rubber strips are widely used in the joints between the traction motor bottom plate and the equipment compartment of EMU trains to seal and prevent external airflow, foreign matter (especially sand, gravel) and liquid (oil and water) from invading the equipment compartment. Existing rubber strips mainly adopt a straight strip structure, and are stood up sideways to form a rubber ring, and then the interface is bonded to form. The upper and lower ends of the rubber ring are fixed with metal strips, and are respectively connected to the traction motor bottom plate and the equipment compartment. During the operation of EMU trains, they will be subject to frequent and severe vibrations. Under the action of alternating stress, the rubber strips will be repeatedly compressed and stretched, which can easily tear the rubber at the joints. At the same time, during the compression process of the rubber strips, due to the limited flow of the material, sharp protrusions will be formed at the corners. These protrusions are most susceptible to wear, which will cause the rubber ring to open or crack, thereby affecting the function and use of the rubber ring. Summary of the invention

[0003] The invention aims to solve the problem that the existing rubber ring is prone to tearing and wearing during train operation, which leads to a short service life of the rubber ring, and further provides a rubber ring for sealing the equipment compartment of an EMU train.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A rubber ring for sealing an equipment compartment of an EMU train comprises a rubber ring body, a first connecting portion fixedly arranged on the outer wall of one end of the rubber ring body, and a second connecting portion fixedly arranged on the inner wall of the other end of the rubber ring body, wherein the rubber ring body is a pre-deformed structure, the longitudinal sections of the first connecting portion and the second connecting portion are both T-shaped structures, and the first connecting portion and one end of the rubber ring body, and the second connecting portion and the other end of the rubber ring body are arranged in an I-shaped structure, the first connecting portion is sleeved on the outside of the first connecting portion, and the upper part of the rubber ring body, the first connecting portion and the first metal kit are simultaneously fixedly arranged on a traction motor bottom plate by bolts, the second connecting portion is sleeved on the outside of the second connecting portion, and the lower part of the rubber ring body, the second connecting portion and the second metal kit are simultaneously fixedly arranged on the equipment compartment by bolts.

[0006] Furthermore, when the relative distance between the traction motor bottom plate and the equipment compartment is minimum, the rubber ring body is in a compressed state.

[0007] Furthermore, when the rubber ring body is in a compressed state, the middle portion of its longitudinal cross section in the height direction is in an arc-shaped structure.

[0008] Furthermore, the arc-shaped structure is recessed into the rubber ring body.

[0009] Furthermore, the longitudinal section of the rubber ring body has an arc-shaped transition between the middle portion and the adjacent upper portion and lower portion in the height direction.

[0010] Furthermore, each metal kit includes four arc-shaped corner pieces and four strip pieces, a strip piece is arranged between every two adjacent arc-shaped corner pieces, and each arc-shaped corner piece and each strip piece are sleeved on their corresponding connecting parts.

[0011] Furthermore, the first metal kit and the second metal kit are both aluminum profile kits.

[0012] Compared with the prior art, the present invention has the following effects:

[0013] The present application uses the pre-deformation structure of the rubber ring body to enable the rubber ring to maintain its elasticity under the action of alternating stress, be able to withstand frequent and severe vibrations, have no sharp protrusions in the compressed state, and will not be damaged or broken due to multiple compressions.

[0014] The metal set and the rubber ring are in surface contact through the connection part where the upper and lower ends of the rubber ring body are fixed. The rubber ring is fixed by the metal set, and then the metal set is fixed by screws, so as to avoid damaging the rubber ring by directly fixing with screws. The tear resistance and fatigue aging resistance of the rubber ring are enhanced, the sealing performance of the rubber ring is guaranteed, and the service life of the rubber ring is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0016] Figure 2 It is a main cross-sectional schematic diagram of the rubber ring body in a compressed state;

[0017] Figure 3 for Figure 2 An enlarged schematic diagram of point P;

[0018] Figure 4 It is a main cross-sectional schematic diagram of the rubber ring body in a stretched state;

[0019] Figure 5 for Figure 4 An enlarged schematic diagram of point I. DETAILED DESCRIPTION

[0020] Specific implementation method 1: Combination Figures 1 to 5The present embodiment is described. A rubber ring for sealing an equipment compartment of an EMU train comprises a rubber ring body 1, a first connecting portion 2 fixedly mounted on an outer wall of one end of the rubber ring body 1, and a second connecting portion 3 fixedly mounted on an inner wall of the other end of the rubber ring body 1. The rubber ring body 1 is a pre-deformed structure. The longitudinal sections of the first connecting portion 2 and the second connecting portion 3 are both T-shaped structures. The first connecting portion 2 and one end of the rubber ring body 1, and the second connecting portion 3 and the other end of the rubber ring body 1 are arranged in an I-shaped structure. The first connecting portion 2 is sleeved on the outside with a first metal set 4. The upper part of the rubber ring body 1, the first connecting portion 2 and the first metal set 4 are simultaneously fixedly mounted on a traction motor bottom plate 100 by bolts. The second connecting portion 3 is sleeved on the outside with a second metal set 5. The lower part of the rubber ring body 1, the second connecting portion 3 and the second metal set 5 are simultaneously fixedly mounted on an equipment compartment 101 by bolts. The rubber ring body 1 is an integrally formed rectangular ring. It has higher strength and sealing performance. It is arranged in accordance with the traction motor bottom plate 100 and the equipment compartment 101. Its upper part is fixedly connected to the traction motor plate, and its lower part is fixedly connected to the equipment compartment 101. During the operation of the EMU, it plays a sealing role to prevent external airflow and foreign matter (especially sand, gravel, liquid oil and water) from invading the equipment compartment 101, and can resist the erosion of high temperature, high cold and wind and sand. During the operation of the EMU, the traction motor base plate 100 will leave the initial position due to the vibration of the traction motor, so that the relative distance between the traction motor base plate 100 and the equipment compartment 101 becomes larger, and the rubber ring body 1 also stretches and deforms in the longitudinal direction as the distance increases. Since the rubber ring adopts a special pre-deformed structure, when the rubber ring is stretched, the part of the rubber ring that actually bears the tension is avoided from becoming thinner, which greatly increases the service strength and life of the rubber ring.

[0021] Since the EMU is subjected to frequent and severe vibrations during operation, the rubber ring will be repeatedly compressed and stretched under the action of alternating stress. The pre-deformation structure of the rubber ring body 1 makes the connection between the rubber ring and the traction motor bottom plate 100 tighter, and it can not be over-stretched in the stretched state, so as to maintain the elasticity of the rubber ring. The pre-deformation structure adopts a smooth transition to the inner concave, and no sharp convex points appear in the compressed state, and it will not be damaged or broken due to multiple compressions, which effectively enhances its tear resistance and fatigue aging resistance.

[0022] The upper and lower ends of the rubber ring body 1 are respectively integrally formed with two connecting parts into an I-shaped structure and inserted into the metal kit so that the rubber ring can be firmly fixed between the traction motor base plate 100 and the equipment compartment 101 to prevent the rubber strip from being torn during vibration.

[0023] When the relative distance between the traction motor base plate 100 and the equipment compartment 101 is the smallest, the rubber ring body 1 is in a compressed state, so as to ensure that when the relative distance between the traction motor base plate 100 and the equipment compartment 101 increases, the rubber ring is subjected to excessive tension during the elongation process, thereby further increasing the use strength of the rubber ring.

[0024] When the rubber ring body 1 is in a compressed state, the middle part of the height direction of its longitudinal section is an arc-shaped structure. The main part of the rubber ring body 1 is the part that actually bears the force during the stretching process of the rubber ring body 1. Setting it as an arc-shaped structure effectively prevents the appearance of sharp convex points during the stretching and compression process of the rubber ring body 1, effectively reduces the possibility of damage and rupture due to multiple compressions, and thus enhances its tear resistance and fatigue aging resistance.

[0025] The arc structure is recessed into the rubber ring body 1. While ensuring its tear resistance and fatigue aging resistance, it makes the sealing structure between the traction motor bottom plate 100 and the equipment compartment 101 neater.

[0026] The longitudinal section of the rubber ring body 1 has an arc transition between the middle part and the adjacent upper and lower parts in the height direction. The upper, middle and lower parts of the rubber ring body 1 have arc transitions, which effectively prevents the appearance of sharp convex points during the stretching and compression of the rubber ring body 1, effectively reduces the possibility of damage and rupture due to multiple compressions, and thus enhances its tear resistance and fatigue aging resistance.

[0027] Each metal set includes four arc corner pieces 6 and four strip pieces 7. A strip piece 7 is arranged between each two adjacent arc corner pieces 6, and each arc corner piece 6 and each strip piece 7 are sleeved on their corresponding connecting parts. The cross section of the rubber ring body is a rectangular structure. The four arc corner pieces are sleeved at the four corners of the rubber ring body respectively. The metal set is arranged in sections to ensure its connection stability and facilitate its installation and removal with the rubber ring body 1.

Claims

1. A rubber ring for sealing an equipment compartment of a train set, characterized in that: It comprises a rubber ring body (1), a first connecting part (2) fixedly arranged on the outer wall of one end of the rubber ring body (1), and a second connecting part (3) fixedly arranged on the inner wall of the other end of the rubber ring body (1); the rubber ring body (1) is a pre-deformed structure; the longitudinal sections of the first connecting part (2) and the second connecting part (3) are both T-shaped structures; the first connecting part (2) and one end of the rubber ring body (1), and the second connecting part (3) and the other end of the rubber ring body (1) are both arranged in an I-shaped structure; the first connecting part (2) is sleeved with a first metal set (4) on the outside; and the upper part of the rubber ring body (1), the first connecting part (2) and the second connecting part (3) are A metal kit (4) is fixed to the traction motor bottom plate (100) by bolts, a second metal kit (5) is sleeved on the outside of the second connection part (3), and the lower part of the rubber ring body (1), the second connection part (3) and the second metal kit (5) are fixed to the equipment cabin (101) by bolts; each metal kit includes four arc-shaped corner pieces (6) and four strip pieces (7), one strip piece (7) is arranged between each two adjacent arc-shaped corner pieces (6), and each arc-shaped corner piece (6) and each strip piece (7) are sleeved on their corresponding connection parts; the first metal kit (4) and the second metal kit (5) are both aluminum profile kits.

2. The rubber ring for sealing the equipment compartment of a train set according to claim 1, characterized in that: When the relative distance between the traction motor bottom plate (100) and the equipment cabin (101) is the smallest, the rubber ring body (1) is in a compressed state.

3. The rubber ring for sealing the equipment compartment of a train set according to claim 2, characterized in that: When the rubber ring body (1) is in a compressed state, the middle portion of its longitudinal section in the height direction is in an arc-shaped structure.

4. The rubber ring for sealing the equipment compartment of a train set according to claim 3, characterized in that: The arc-shaped structure is recessed into the rubber ring body (1).

5. A rubber ring for sealing an equipment compartment of a train set according to claim 3 or 4, characterized in that: The longitudinal section of the rubber ring body (1) has an arc-shaped transition between the middle part and the adjacent upper and lower parts in the height direction.

Images