Damping fixing part and railway vehicle electric appliance cabinet with same

Abstract

The utility model provides a damping fixing piece and a railway vehicle electric appliance cabinet with the damping fixing piece. Specifically, the damping fixing part comprises an aluminum alloy fixing main body; the aluminum alloy fixing body extends outwards, the three fixing arms extend outwards from the aluminum alloy fixing body, the included angle between any two of the three fixing arms ranges from 90 degrees to 130 degrees, and any one of the three fixing arms sequentially comprises a rubber end, a rubber sleeve, a rubber sleeve, a rubber sleeve and a rubber sleeve from the tail end of the rubber sleeve to the aluminum alloy fixing body. A fiber mat section; a first aluminum alloy section; a rubber section; the second aluminum alloy section and the aluminum alloy fixing body are connected or integrally formed. The damping fixing piece is used for being installed at the junction of three adjacent cabinet walls in the electrical cabinet of the railway vehicle, and can effectively reduce vibration of the electrical cabinet in the running process of the vehicle while fixing the cabinet walls of the electrical cabinet.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rail vehicle electric appliance cabinet damping, specifically, a damping fixing piece and the rail vehicle electric appliance cabinet with the damping fixing piece. BACKGROUND

[0002] In the process of continuous development and evolution of rail vehicle technology, as a key component, the electric appliance cabinet bears the heavy responsibility of accommodating and protecting numerous precision electrical equipment, and its stability is directly related to the reliability and safety of rail vehicle operation.

[0003] When the vehicle is running, due to the unevenness of the track, the start-stop operation of the vehicle, the driving on the curve and the passing through the turnout, etc., extremely complex vibration conditions will be produced. These vibrations cover a wide range of frequencies and different amplitudes, and will continue to act on the electric appliance cabinet.

[0004] The existing rail vehicle electric appliance cabinet fixing and damping scheme has obvious limitations. In terms of fixing method, the traditional connection structure often only focuses on realizing basic installation stability, while ignoring effective vibration suppression. For example, ordinary bolt connection or simple welding fixation can connect the cabinet walls of the electric appliance cabinet, but in the face of strong and variable vibration impact, it cannot buffer the vibration energy, so that the vibration is transmitted to the electrical equipment inside the electric appliance cabinet without any hindrance.

[0005] From the perspective of damping, some existing damping measures are difficult to adapt to the special working conditions and layout requirements of the rail vehicle electric appliance cabinet. Some general damping pads or dampers are prone to performance degradation in the high-frequency, long-time and strong-impact vibration environment of rail vehicles, such as aging of rubber damping pads and fatigue of spring dampers. At the same time, the damping design for specific positions inside the electric appliance cabinet, especially the complex structure and stress concentration area at the junction of the three adjacent cabinet walls, is not precise and efficient enough. Due to the special geometry of this area, traditional damping pieces are difficult to perfectly fit and effectively function, and cannot provide balanced and sufficient damping force, resulting in strong vibration of the electric appliance cabinet at this part, increasing the risk of damage to the internal electrical equipment due to vibration, and thus may cause electrical failure, affecting the normal operation of the rail vehicle, the safety and riding experience of passengers. Therefore, it is urgent to develop a damping fixing piece specially applied to the junction of the three adjacent cabinet walls inside the rail vehicle electric appliance cabinet. UTILITY MODEL CONTENTS

[0006] From the above technical problems, one of the purposes of the utility model is to provide a damping fixing piece and a rail vehicle electric appliance cabinet with the damping fixing piece, which is used to install at the junction of three adjacent cabinet walls inside the rail vehicle electric appliance cabinet, and can effectively reduce the vibration of the electric appliance cabinet during vehicle running while fixing the cabinet walls.

[0007] In particular, according to one aspect of the present application, there is provided a damping fixing member, characterized in that the damping fixing member comprises:

[0008] an aluminum alloy fixing body; and

[0009] three fixing arms extending outwardly from the aluminum alloy fixing body, an included angle between any two of the three fixing arms being in a range of 90 degrees to 130 degrees, wherein any one of the three fixing arms comprises, in sequence from an end thereof toward the aluminum alloy fixing body:

[0010] a rubber end portion;

[0011] a fiber pad section;

[0012] a first aluminum alloy section;

[0013] a rubber section; and

[0014] a second aluminum alloy section, which is joined with the aluminum alloy fixing body or integrally formed.

[0015] According to another aspect of the present application, there is provided a rail vehicle electrical cabinet having the above-mentioned damping fixing member. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 shows an overall schematic view of a damping fixing member according to one embodiment of the present application; and

[0017] Figure 2 shows a partial structural schematic view of a fixing arm of a damping fixing member according to one embodiment of the present application. DETAILED DESCRIPTION

[0018] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It will be understood that other embodiments are contemplated, and can be practiced, without departing from the scope or spirit of the present application. Therefore, the following detailed description is non-limiting.

[0019] Unless otherwise indicated, all numbers used in the present specification and claims to indicate feature sizes, quantities, and physicochemical properties should be understood as being modified in all cases by the term "about". Therefore, unless otherwise indicated, the numerical parameters listed in the above description and the appended claims are approximate values, and those skilled in the art will be able to appropriately change these approximate values ​​by utilizing the teachings disclosed herein to seek to obtain the desired properties. The use of numerical ranges expressed as endpoints includes all numbers within the range and any range within the range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4 and 5, etc.

[0020] As mentioned above, the stability of electrical cabinets is of vital importance in the development of rail vehicles. Complex vibrations are generated under various working conditions during driving, and existing solutions for fixing and damping electrical cabinets are limited. Traditional fixing methods only focus on stability and cannot buffer vibrations, causing them to be directly transmitted to electrical equipment. Existing shock-absorbing measures are difficult to apply to the special working conditions and layout of rail vehicle electrical cabinets. General shock-absorbing parts are prone to performance degradation, and at the junction of three adjacent cabinet walls of the electrical cabinet, due to the special shape, traditional shock-absorbing parts have poor fit and small effect, and cannot provide balanced shock-absorbing force. The vibration in this area is strong, which makes the internal electrical equipment easily damaged, causing failures and endangering vehicle operation, passenger safety and experience. Therefore, special shock-absorbing fixings are urgently needed. The inventors of the present utility model found in their research that by specifically designing a shock-absorbing fixing structure with a specific fixed arm structure, the vibration of the electrical cabinet during vehicle driving can be effectively reduced, and when specific structural parameters are specifically selected, the vibration can even be effectively attenuated within a wider frequency range (for example, 0-500Hz).

[0021] Specifically, according to one aspect of the present invention, a shock-absorbing fixing member is provided, characterized in that the shock-absorbing fixing member includes:

[0022] Aluminum alloy fixed body; and

[0023] Three fixing arms extending outward from the aluminum alloy fixing body, wherein the angle between any two of the three fixing arms is in the range of 90 degrees to 130 degrees, wherein any one of the three fixing arms comprises, in order from its distal end toward the aluminum alloy fixing body:

[0024] Rubber end;

[0025] fiber mat segment;

[0026] a first aluminum alloy section;

[0027] rubber segments; and

[0028] A second aluminum alloy segment is joined to or integrally formed with the aluminum alloy fixing body.

[0029] Figure 1 FIG. 1 shows an overall schematic diagram of a shock-absorbing fixing element 1 according to an embodiment of the present invention. Figure 2 A partial structural diagram of a fixing arm of a shock-absorbing fixing member 1 according to one embodiment of the present invention is shown. Specifically, the shock-absorbing fixing member 1 comprises: an aluminum alloy fixing body 2; and three fixing arms 3 extending outward from the aluminum alloy fixing body 2, wherein the angle between any two of the three fixing arms 3 is within a range of 90 to 130 degrees, wherein each of the three fixing arms 3 includes, in order from its end A toward the aluminum alloy fixing body 2:

[0030] Rubber end 4;

[0031] Fiber mat segment 5;

[0032] First aluminum alloy segment 6;

[0033] rubber segment 7; and

[0034] The second aluminum alloy segment 8 is joined to or integrally formed with the aluminum alloy fixing body 2 .

[0035] According to certain preferred embodiments of the present invention, the aluminum alloy fixing body is shaped like a sphere, a cube, or a disk, preferably a sphere. Preferably, the aluminum alloy fixing body is shaped like a sphere with a diameter ranging from 1.5 cm to 5 cm, preferably from 2 cm to 4 cm. The three fixing arms are bonded to the aluminum alloy fixing body by bonding, welding, or integral molding.

[0036] According to certain preferred embodiments of the present invention, the angle between any two of the three fixing arms is in the range of 110 to 120 degrees. More preferably, the angle between any two of the three fixing arms is in the range of 115 to 120 degrees.

[0037] Preferably, any one of the three fixing arms is a cylindrical fixing arm. In addition, preferably, the diameter of the cylindrical fixing arm is in the range of 0.5 cm to 3 cm, preferably 1 cm to 3 cm.

[0038] There are no specific restrictions on the material of the rubber end portion that can be used in the present invention; it can be any commercially available rubber product commonly used for shock absorption applications. Preferably, the rubber end portion is a silicone rubber end portion, a nitrile rubber end portion, or a chloroprene rubber end portion. Preferably, the length of the rubber end portion is in the range of 1 cm to 3 cm, preferably 1.5 cm to 2 cm.

[0039] There is no specific limitation on the material of the fiber mat segment used in the present invention, and the fiber mat segment can be a commercially available fiber mat product conventionally used for shock absorption applications. Preferably, the fiber mat segment is a polyester fiber mat segment or a glass fiber mat segment.

[0040] According to certain preferred embodiments of the present invention, the fiber mat segment has a gram weight of 100 g / m 2 Up to 1000g / m 2 , 300g / m 2 Up to 800g / m 2 And more preferably 500g / m 2 Up to 600g / m 2 within the range.

[0041] Preferably, the length of the fiber mat segment is in the range of 2 cm to 3 cm, preferably 2 cm to 2.5 cm.

[0042] According to certain preferred embodiments of the present invention, the lengths of the first aluminum alloy segment and the second aluminum alloy segment are in the range of 1 cm to 3 cm, preferably 1.5 cm to 2.5 cm.

[0043] The rubber material of the rubber segments used in the present invention is not particularly limited; they can be commercially available rubber products commonly used in shock absorption applications. Preferably, the rubber segments are silicone rubber, nitrile rubber, or chloroprene rubber. Preferably, the length of the rubber segments is in the range of 1 cm to 3 cm, more preferably 1.5 cm to 2.5 cm.

[0044] According to certain preferred embodiments of the present invention, the rubber end portion, the fiber mat segment, the first aluminum alloy segment, the rubber segment, and the second aluminum alloy segment are sequentially bonded together via a pressure-sensitive adhesive layer.

[0045] Preferably, the pressure-sensitive adhesive layer is a rubber-type pressure-sensitive adhesive layer, a resin-type pressure-sensitive adhesive layer or a silicone pressure-sensitive adhesive layer. Preferably, the pressure-sensitive adhesive layer has a thickness in the range of 10 μm to 200 μm, preferably 50 μm to 150 μm.

[0046] According to certain preferred embodiments of the present invention, in order to enable the shock-absorbing fixing member to be more snugly engaged with three adjacent cabinet walls inside the electrical cabinet, the rubber end portion has an oblique angled end portion.

[0047] All materials used in the present invention can be commercially obtained or prepared according to known conventional methods.

[0048] According to another aspect of the present invention, a rail vehicle electrical cabinet is provided, comprising the aforementioned shock-absorbing fixture. Specifically, the rail vehicle electrical cabinet includes, but is not limited to, a traction cabinet, a control cabinet, and an auxiliary cabinet. The traction cabinet primarily controls the train's traction power system and integrates a large number of electrical components related to traction motor control and power conversion, such as inverters and contactors. High vibration damping requirements are required to ensure stable operation of the traction system and prevent vibration-induced power transmission failures or component damage. The control cabinet houses the train's various control units, such as signal processing modules and logic control circuits. These sophisticated control components are extremely sensitive to vibration, and their vibration damping design is crucial to the accurate issuance and execution of train operating instructions. Even minor vibrations can cause signal distortion or control malfunctions. The auxiliary cabinet manages the train's auxiliary power supply system, including inverters, chargers, and other equipment, ensuring power supply to auxiliary equipment such as interior lighting and air conditioning. Its vibration damping performance impacts the normal operation of these auxiliary equipment, and thus, passenger comfort and interior environmental quality.

[0049] Preferably, the shock-absorbing fixture is fixed to the intersection of three adjacent cabinet walls inside the rail vehicle electrical cabinet, wherein the three fixing arms are fixedly connected to three cabinet walls that are perpendicular to each other. The fixing method at the intersection of three adjacent cabinet walls can provide stable support for the electrical cabinet from multiple directions. During the operation of the rail vehicle, the vibration of the vehicle is multi-directional, and this fixed position can effectively resist forces from different directions. For example, when the vehicle generates lateral force when traveling on a curve, or generates inertial force in the front and rear directions during acceleration and deceleration, the shock-absorbing fixture fixed at the intersection of the three cabinet walls can act like a stable "triangular support" structure to keep the electrical cabinet in place and prevent it from displacement, thereby ensuring the relative position of the electrical equipment inside the electrical cabinet is stable and ensuring its normal connection and working state.

[0050] Various exemplary embodiments of the present invention are further illustrated by the following list of embodiments, which should not be construed as unduly limiting the present invention:

[0051] Specific embodiment 1 is a shock-absorbing fixing member, characterized in that the shock-absorbing fixing member includes:

[0052] Aluminum alloy fixed body; and

[0053] Three fixing arms extending outward from the aluminum alloy fixing body, wherein the angle between any two of the three fixing arms is in the range of 90 degrees to 130 degrees, wherein any one of the three fixing arms comprises, in order from its distal end toward the aluminum alloy fixing body:

[0054] Rubber end;

[0055] a fiber mat section;

[0056] a first aluminum alloy section;

[0057] a rubber section; and

[0058] a second aluminum alloy section, the second aluminum alloy section being joined with the aluminum alloy fixed body or integrally formed.

[0059] Embodiment 2 is the shock-absorbing fixing member according to Embodiment 1, characterized in that the aluminum alloy fixed body is in the shape of a sphere, a cube, or a disc.

[0060] Embodiment 3 is the shock-absorbing fixing member according to Embodiment 1, characterized in that the aluminum alloy fixed body is in the shape of a sphere having a diameter in the range of 1.5 cm to 5 cm.

[0061] Embodiment 4 is the shock-absorbing fixing member according to Embodiment 1, characterized in that an included angle between any two of the three fixed arms is in the range of 110 degrees to 120 degrees.

[0062] Embodiment 5 is the shock-absorbing fixing member according to Embodiment 1, characterized in that any one of the three fixed arms is a cylindrical fixed arm.

[0063] Embodiment 6 is the shock-absorbing fixing member according to Embodiment 5, characterized in that the cylindrical fixed arm has a diameter in the range of 0.5 cm to 3 cm.

[0064] Embodiment 7 is the shock-absorbing fixing member according to Embodiment 1, characterized in that the rubber end portion is a silicone rubber end portion, a nitrile rubber end portion, or a neoprene rubber end portion.

[0065] Embodiment 8 is the shock-absorbing fixing member according to Embodiment 1, characterized in that the rubber end portion has a length in the range of 1 cm to 3 cm.

[0066] Embodiment 9 is the shock-absorbing fixing member according to Embodiment 1, characterized in that the fiber mat section has a grammage in the range of 100 g / m 2 to 1000 g / m 2 .

[0067] Embodiment 10 is the shock-absorbing fixing member according to Embodiment 1, characterized in that the fiber mat section has a length in the range of 2 cm to 3 cm.

[0068] Specific embodiment 11 is a shock-absorbing fixing according to specific embodiment 1, characterized in that the fiber mat segment is a polyester fiber mat segment or a glass fiber mat segment.

[0069] Specific embodiment 12 is a shock-absorbing fixing according to specific embodiment 1, characterized in that the lengths of the first aluminum alloy segment and the second aluminum alloy segment are in the range of 1 cm to 3 cm.

[0070] Specific embodiment 13 is a shock-absorbing fixing piece according to specific embodiment 1, characterized in that the rubber segment is a silicone rubber segment, a nitrile rubber segment or a chloroprene rubber segment.

[0071] Specific embodiment 14 is a shock-absorbing fixture according to specific embodiment 1, characterized in that the length of the rubber segment is in the range of 1 cm to 3 cm.

[0072] Specific embodiment 15 is a shock-absorbing fixing according to specific embodiment 1, characterized in that the rubber end portion, the fiber pad segment, the first aluminum alloy segment, the rubber segment and the second aluminum alloy segment are sequentially bonded together by a pressure-sensitive adhesive layer.

[0073] Specific embodiment 16 is the shock-absorbing fixing member according to specific embodiment 15, characterized in that the thickness of the pressure-sensitive adhesive layer is in the range of 10 μm to 200 μm.

[0074] Specific embodiment 17 is a shock-absorbing fixing piece according to specific embodiment 15, characterized in that the pressure-sensitive adhesive layer is a rubber-type pressure-sensitive adhesive layer, a resin-type pressure-sensitive adhesive layer or a silicone pressure-sensitive adhesive layer.

[0075] Specific embodiment 18 is a shock-absorbing fixture according to specific embodiment 1, characterized in that the rubber end portion has a beveled end portion.

[0076] Specific embodiment 19 is a rail vehicle electrical cabinet, characterized in that the rail vehicle electrical cabinet has a shock-absorbing fixing according to any one of the aforementioned specific embodiments 1-18.

[0077] Specific embodiment 20 is a rail vehicle electrical cabinet according to specific embodiment 19, characterized in that the shock-absorbing fixing member is fixed at the junction of three adjacent cabinet walls inside the rail vehicle electrical cabinet.

[0078] Compared with the shock-absorbing fixing member in the prior art, the shock-absorbing fixing member according to the present invention has the following advantages:

[0079] 1. Structural design: The shock-absorbing fixture of this utility model is designed with an aluminum alloy fixing body and three fixing arms. This structure can effectively reduce the vibration of the electrical cabinet during driving while fixing the cabinet wall;

[0080] 2. Angle range: The angle between any two of the three fixing arms is within the range of 90 to 130 degrees. This design allows the fixing to better adapt to the spatial layout inside the electrical cabinet;

[0081] 3. Material combination: Each fixed arm includes a rubber end, a fiber pad section, a first aluminum alloy section, a rubber section, and a second aluminum alloy section from the end to the aluminum alloy fixed body. This material combination provides better shock absorption effect;

[0082] 4. Fixing arm shape: The fixing arm can be cylindrical with a diameter ranging from 0.5cm to 3cm. This design helps to improve the stability and shock absorption performance of the fixing.

[0083] 5. Rubber material selection: The rubber end and rubber segment can be silicone rubber, nitrile rubber or neoprene, these materials have good shock absorption performance;

[0084] 6. Fiber pad material: The fiber pad segment can be a polyester fiber pad segment or a glass fiber pad segment, which provides additional shock absorption and support;

[0085] 7. Pressure-sensitive adhesive layer: The components are bonded together by a pressure-sensitive adhesive layer. This bonding method is both strong and provides a certain degree of elasticity, which helps to reduce shock.

[0086] 8. Adhesive layer thickness: The thickness of the pressure-sensitive adhesive layer is in the range of 10 μm to 200 μm. This precise thickness control helps ensure the shock absorption effect; and

[0087] 9. Rubber end design: The rubber end has an angled end. This design allows the fixing to more closely engage with the three adjacent cabinet walls inside the electrical cabinet.

[0088] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if such changes and modifications fall within the scope of the claims of the present utility model and their equivalents, the present disclosure is intended to include such changes and modifications.

Claims

1. A shock-absorbing fixing member, characterized in that: The shock-absorbing fixing member includes: Aluminum alloy fixed body; and Three fixing arms extending outward from the aluminum alloy fixing body, wherein the angle between any two of the three fixing arms is in the range of 90 degrees to 130 degrees, wherein any one of the three fixing arms comprises, in order from its distal end toward the aluminum alloy fixing body: Rubber end; fiber mat segment; a first aluminum alloy section; rubber segments; and A second aluminum alloy segment is joined to or integrally formed with the aluminum alloy fixing body.

2. The shock-absorbing fixing member according to claim 1, characterized in that: The shape of the aluminum alloy fixing body is a sphere, a cube or a disk, or The aluminum alloy fixing body is in the shape of a sphere with a diameter ranging from 1.5 cm to 5 cm.

3. The shock-absorbing fixing member according to claim 1, characterized in that: The angle between any two of the three fixed arms is in the range of 110 degrees to 120 degrees, or Any one of the three fixing arms is a cylindrical fixing arm.

4. The shock-absorbing fixing member according to claim 3, characterized in that: The diameter of the cylindrical fixation arm is in the range of 0.5 cm to 3 cm.

5. The shock-absorbing fixing member according to claim 1, characterized in that: The rubber end portion is a silicone rubber end portion, a nitrile rubber end portion or a chloroprene rubber end portion, or The length of the rubber end portion is in the range of 1 cm to 3 cm, or The fiber mat segment has a gram weight of 100 g / m 2 Up to 1000g / m 2 within the range of The length of the fiber mat segment is in the range of 2 cm to 3 cm, or The fiber mat segment is a polyester fiber mat segment or a glass fiber mat segment.

6. The shock-absorbing fixing member according to claim 1, characterized in that: The lengths of the first aluminum alloy segment and the second aluminum alloy segment are in the range of 1 cm to 3 cm, or The rubber segment is a silicone rubber segment, a nitrile rubber segment or a chloroprene rubber segment, or The length of the rubber segment is in the range of 1 cm to 3 cm, or The rubber end portion has a beveled end portion.

7. The shock-absorbing fixing member according to claim 1, characterized in that: The rubber end portion, the fiber mat segment, the first aluminum alloy segment, the rubber segment, and the second aluminum alloy segment are sequentially bonded together by a pressure-sensitive adhesive layer.

8. The shock-absorbing fixing member according to claim 7, characterized in that: The thickness of the pressure-sensitive adhesive layer is in the range of 10 μm to 200 μm, or The pressure-sensitive adhesive layer is a rubber-type pressure-sensitive adhesive layer, a resin-type pressure-sensitive adhesive layer or a silicone pressure-sensitive adhesive layer.

9. A rail vehicle electrical cabinet, characterized in that: The rail vehicle electrical cabinet has a shock-absorbing fixture according to any one of claims 1 to 8.

10. The rail vehicle electrical cabinet according to claim 9, characterized in that: The shock-absorbing fixing member is fixed at the junction of three adjacent cabinet walls inside the rail vehicle electrical cabinet.

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