Shock absorber for rail transit fuel cell

Abstract

The utility model belongs to the technical field of shock absorbers, and particularly relates to a shock absorber for a rail transit fuel cell. The shock absorber comprises a mounting plate, a rubber sleeve is fixedly connected to the middle of the top of the mounting plate, the rubber sleeve is cylindrical, a cavity is formed in the bottom of the rubber sleeve, the cavity is cylindrical, two arc-shaped grooves A and two arc-shaped grooves B are symmetrically formed in the inner side wall of the cavity in the radial direction, the two arc-shaped grooves A are symmetrically formed in a 180-degree mode, the two arc-shaped grooves B are symmetrically formed in a 180-degree mode, and the two arc-shaped grooves A and the two arc-shaped grooves B are symmetrically formed in a 180-degree mode. The symmetrical line where the two arc-shaped grooves A are located and the symmetrical line where the two arc-shaped grooves B are located are arranged at 90 degrees, a mounting bolt is connected to the top of the rubber sleeve in an up-down penetrating mode, the lower end of the mounting bolt is located in the cavity, and the outer side wall of the mounting bolt is fixedly connected with the inner side wall of the cavity. The shock absorber can conduct shock absorption in the axial direction and the radial direction, the buffering effect is improved, excessive compression is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock absorbers, and in particular relates to a shock absorber used for a rail transit fuel cell. Background Art

[0002] Fuel cells are a type of new energy battery and a hot topic in the research of the new energy industry. Hydrogen-chlorine fuel cells use hydrogen as fuel and chlorine as oxidant. The two react electrochemically in the battery, converting the chemical energy stored in them directly into electrical energy. At the same time, hydrochloric acid of the required concentration can be produced. At present, the technology of hydrogen-chlorine fuel cells has matured and has been widely used in rail transit vehicles. However, in the use environment of rail transit vehicles, vibrations can have a great destructive effect on hydrogen-chlorine fuel cells. At present, the shock absorbers of fuel cells often only perform vibration reduction in a single direction, and often cannot take into account all the vibrations in the x, y, and z directions. The buffering effect is limited, and the shock absorbers are easily over-compressed during installation, which seriously affects their service life and safety. Utility Model Content

[0003] The utility model provides a vibration damper for rail transit fuel cells, which can achieve vibration reduction in three directions, axial and radial, solving the problems that the current vibration damper for fuel cells cannot achieve vibration reduction in three directions at the same time, is easily compressed and has a short service life.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A shock absorber for a rail transit fuel cell comprises a mounting plate, a rubber sleeve is fixedly connected to the middle of the top of the mounting plate, the rubber sleeve is cylindrical, a cavity is provided at the bottom of the rubber sleeve, the cavity is cylindrical, two arc grooves A and two arc grooves B are symmetrically provided on the inner side wall of the cavity along the radial direction, the two arc grooves A are symmetrically arranged at 180°, the two arc grooves B are symmetrically arranged at 180°, the symmetry line where the two arc grooves A are located is arranged at 90° to the symmetry line where the two arc grooves B are located, the top of the rubber sleeve is penetrated and connected with mounting bolts, the lower end of the mounting bolts is located in the cavity, and the outer side wall of the mounting bolts is fixedly connected to the inner side wall of the cavity.

[0006] Through the above technical solution, the rubber sleeve itself can perform axial vibration reduction and buffering on the fuel cell, and the cavity opened at the bottom of the rubber sleeve enables the rubber sleeve to have a buffering and anti-extrusion function. The two arc grooves A and two arc grooves B opened in the cavity enable the rubber sleeve to play a vibration reduction and buffering role in two directions in the radial direction. The setting of the mounting bolts can not only play the role of installing the shock absorber and the fuel cell, but also enhance the strength of the rubber sleeve, so that after the cavity is opened in the rubber sleeve, the vibration reduction effect of the rubber sleeve in two directions in the radial direction is enhanced.

[0007] Optionally, the symmetry line where the two arc-shaped grooves A are located coincides with the symmetry line of the mounting plate along the length direction, and the depth of the arc-shaped groove A is less than the depth of the arc-shaped groove B.

[0008] Through the above technical solution, the depth of the arc groove A is different from the depth of the arc groove B, which can make the rubber sleeve have different stiffness in the two radial directions, so that the rubber sleeve has different impact resistance in the two radial directions, improve the anti-buffering ability of the rubber after being squeezed in different directions, and then enhance the vibration reduction effect of the rubber sleeve in the two radial directions.

[0009] Optionally, mounting holes are respectively provided at the left and right ends of the mounting plate.

[0010] Through the above technical solution, the installation holes are set so that after the shock absorber is installed with the fuel cell through the installation bolts, the shock absorber is connected to the vehicle body through the cooperation of the installation holes and the bolts, thereby improving the firmness and stability of the shock absorber in exerting a vibration reduction effect on the fuel cell.

[0011] Optionally, the top of the rubber sleeve is arranged in an arc shape along the circumferential direction.

[0012] Through the above technical solution, the arc design can improve the strength of the top of the rubber sleeve.

[0013] Optionally, the mounting bolt is located at the center of the rubber sleeve, the connection between the lower end outer wall of the mounting bolt and the arc groove A is arc-shaped, and the connection between the lower end outer wall of the mounting bolt and the arc groove B is sloped.

[0014] Through the above technical solution, the mounting bolt is located inside the cavity, which can not only enable the mounting bolt to increase the strength of the rubber sleeve, but also prevent the lower end of the mounting bolt from being interfered with. The connection between the mounting bolt and the arc groove A is arc-shaped, and the connection with the arc groove B is sloped, which can improve the deformation force and impact resistance of the arc groove A and the arc groove B after being squeezed and collided by the outside, and it is not easy to break the connection.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model makes the rubber sleeve itself cylindrical, so that the rubber sleeve has a vibration reduction effect in the axial direction. The cylindrical cavity opened at the bottom of the rubber sleeve and the design of the arc groove A and the arc groove B enable the rubber sleeve to play a vibration reduction effect in two radial directions, and the rubber sleeve will not be over-compressed and has strong impact resistance. The lower end of the mounting bolt is located in the cavity, which can improve the strength of the rubber sleeve itself, make the rubber have stronger impact resistance and long service life, and does not affect the installation and fixation of the mounting bolt and the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 The structure of the shock absorber in the embodiment is shown in FIG. Figure I ;

[0019] Figure 2 The structure of the shock absorber in the embodiment is shown in FIG. Figure II ;

[0020] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 This is a cross section of the vibration absorber and the lifting lug installation in the embodiment Figure I ;

[0022] Figure 5 This is a cross section of the vibration absorber and the lifting lug installation in the embodiment Figure II ;

[0023] Figure 6 It is a schematic diagram of the structure after the vibration damper and the fuel cell are installed in the embodiment.

[0024] Explanation of the accompanying drawings: 1. Mounting plate; 2. Rubber sleeve; 3. Mounting bolt; 4. Mounting hole; 5. Arc groove A; 6. Arc groove B; 7. Cavity; 8. Lifting ear. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The embodiment of the present application discloses a shock absorber for a rail transit fuel cell.

[0027] Example

[0028] according to Figures 1 to 6 As shown, a shock absorber for a rail transit fuel cell comprises a mounting plate 1, a rubber sleeve 2 is fixedly connected to the middle of the top of the mounting plate 1, mounting holes 4 are respectively provided at the left and right ends of the mounting plate 1, the top of the rubber sleeve 2 is arranged in an arc shape along the circumferential direction, a cavity 7 is provided at the bottom of the rubber sleeve 2, the cavity 7 is cylindrical, and the inner side wall of the cavity 7 is provided with two arc grooves A5 and two arc grooves B6, the two arc grooves A5 are arranged symmetrically at 180°, the two arc grooves B6 are arranged symmetrically at 180°, the symmetry line where the two arc grooves A5 are located is arranged at 90° to the symmetry line where the two arc grooves B6 are located, the symmetry line where the two arc grooves A5 are located coincides with the symmetry line of the mounting plate 1 along the length direction, and the depth of the arc groove A5 is less than the depth of the arc groove B6.

[0029] A mounting bolt 3 is vertically passed through the center of the rubber sleeve 2 and fixedly connected thereto. The lower end of the mounting bolt 3 vertically passes through the top of the rubber sleeve 2. The lower end of the mounting bolt 3 is located in the cavity 7. The lower end of the mounting bolt 3 is fixedly connected to the inner wall of the cavity 7. The connection between the outer wall of the lower end of the mounting bolt 3 and the arc groove A5 is arc-shaped, and the connection between the outer wall of the lower end of the mounting bolt 3 and the arc groove B6 is sloped.

[0030] Working principle:

[0031] Six lugs 8 are installed at intervals in the circumferential direction of the fuel cell. The shock absorber of the utility model is installed below the six lugs 8. The mounting bolts 3 are placed vertically, and the upper ends of the mounting bolts 3 are inserted into the lugs 8. The mounting bolts 3 are detachably connected to the lugs 8 by cooperating with the nuts, so that the shock absorber is installed and fixed to the fuel cell. After the shock absorber is installed, the mounting plate 1 is arranged parallel to the fuel cell. Then, the mounting plate 1 is detachably connected to the vehicle body by bolts at the mounting holes 4, so that the shock absorber is installed and fixed to the vehicle body. The shock absorber can reduce the impact of vibration and external impact on the fuel cell when the fuel cell is running with the vehicle body through its own impact resistance, thereby improving the service life of the fuel cell. The shock absorber is installed along the circumference of the fuel cell, so that the fuel cell as a whole and the vehicle body have impact resistance. After the vehicle body is vibrated, each shock absorber is used to perform vibration reduction and buffering in three directions, axial and radial, thereby improving the service life of the fuel cell.

[0032] In the utility model, the bottom cavity 7 of the rubber sleeve 2 is provided with two arc grooves A5 and two arc grooves B6, and the two arc grooves A5 and the two arc grooves B6 are distributed in two radial directions of the cavity 7, and the depths of the arc grooves A5 and the arc grooves B6 are different, so that the rubber sleeve 2 has two stiffnesses in the radial direction. The different stiffnesses make the impact resistance of the rubber sleeve 2 in the two radial directions different, and the deformation amount of the rubber sleeve 2 when being squeezed by the same external force is different, which further improves the shock absorption effect and impact resistance of the rubber sleeve 2 in the radial direction.

[0033] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock absorber for a rail transit fuel cell, characterized in that: It includes a mounting plate, a rubber sleeve is fixedly connected to the middle of the top of the mounting plate, the rubber sleeve is cylindrical, a cavity is opened at the bottom of the rubber sleeve, the cavity is cylindrical, the inner wall of the cavity is symmetrically opened with two arc grooves A and two arc grooves B along the radial direction, the two arc grooves A are symmetrically arranged at 180°, the two arc grooves B are symmetrically arranged at 180°, the symmetry line where the two arc grooves A are located is 90° to the symmetry line where the two arc grooves B are located, the top of the rubber sleeve is penetrated and connected with mounting bolts, the lower end of the mounting bolts is located in the cavity, and the outer wall of the mounting bolts is fixedly connected to the inner wall of the cavity.

2. A shock absorber for rail transit fuel cells according to claim 1, characterized in that: The symmetry line where the two arc-shaped grooves A are located coincides with the symmetry line of the mounting plate along the length direction, and the depth of the arc-shaped groove A is less than the depth of the arc-shaped groove B.

3. A shock absorber for rail transit fuel cells according to claim 2, characterized in that: The left and right ends of the mounting plate are respectively provided with mounting holes.

4. The shock absorber for rail transit fuel cell according to claim 1, characterized in that: The top of the rubber sleeve is arranged in an arc shape along the circumferential direction.

5. The shock absorber for rail transit fuel cell according to claim 1, characterized in that: The mounting bolt is located at the center of the rubber sleeve, the connection between the lower end outer wall of the mounting bolt and the arc groove A is arc-shaped, and the connection between the lower end outer wall of the mounting bolt and the arc groove B is sloped.

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