Multi-stage buffer spring shock absorber

Abstract

The utility model relates to the technical field of shock absorption, and discloses a multistage buffer spring shock absorber which comprises an upper outer sleeve and a shock absorption shaft mechanism, the outer wall of the upper outer sleeve is fixedly connected with a connecting shaft sleeve, the inner wall of the connecting shaft sleeve is provided with a shock absorption shaft guide rod, and the outer wall of the shock absorption shaft guide rod is fixedly connected with a mounting frame. A sliding sealing ring is arranged on the side, away from the mounting frame, of the damping shaft guide rod. According to the multi-stage buffer spring shock absorber, the multiple limiting rods are arranged on the outer wall of the sliding sealing ring, so that when the sliding sealing ring is stressed to slide in the lining cylinder, the limiting rods can play a guiding role and can also effectively prevent the sliding sealing ring from turning over to cause backflow of oil liquid, and a protective gasket is arranged outside the sliding sealing ring, so that the service life of the sliding sealing ring is prolonged, and the service life of the sliding sealing ring is prolonged. And the balance weight of the sliding sealing ring in the moving process can be enhanced, so that the pressure borne by the damping spring can be effectively increased, and resetting of equipment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of shock absorption technology, specifically a multi-stage buffer spring shock absorber. Background Technology

[0002] Hydraulic shock absorbers achieve vibration reduction by generating hydraulic damping force through the reciprocating motion of a piston rod that stretches and compresses it. They possess excellent damping effect and flexible vibration reduction capabilities, making them a key component for improving the stability, comfort, and safety of light rail vehicles during high-speed operation. The main structure of a hydraulic shock absorber includes the body, shaft, bearings, inner tube, piston, hydraulic shaft, and springs.

[0003] Existing multi-stage buffer spring shock absorbers typically rely on hydraulic damping to counteract the pressure on the shaft during operation, thus achieving a shock absorption effect. However, during the shock absorption process, the mismatch between the downward pressure speed of the sealing ring and the flow rate of the oil can cause the sealing ring to buckle, leading to oil backflow. This prevents the equipment from resetting after shock absorption, and the pressure below has nowhere to be released, potentially causing equipment damage. Therefore, a multi-stage buffer spring shock absorber is proposed. Utility Model Content

[0004] This utility model provides the following technical solution: a multi-stage buffer spring shock absorber, including an upper outer sleeve and a shock-absorbing shaft mechanism. A connecting bushing is fixedly connected to the outer wall of the upper outer sleeve. A shock-absorbing shaft guide rod is provided on the inner wall of the connecting bushing. A mounting bracket is fixedly connected to the outer wall of the shock-absorbing shaft guide rod. A sliding sealing ring is provided on the side of the shock-absorbing shaft guide rod away from the mounting bracket. A protective washer is fixedly connected to the side of the sliding sealing ring away from the shock-absorbing shaft guide rod. A transmission shaft is provided on the outer wall of the protective washer. A piston liner is fixedly connected to the outer wall of the transmission shaft. A shock-absorbing spring is sleeved on the outer wall of the transmission shaft. Multiple limiting rods are provided on the outer wall of the sliding sealing ring, and the multiple limiting rods are distributed in a circumferential array on the outer wall of the sliding sealing ring.

[0005] As a preferred embodiment of this utility model, the upper outer sleeve is provided with a lower outer sleeve on the side away from the connecting shaft sleeve, the inner wall of the lower outer sleeve is provided with a pressure relief ring mechanism, and the inner wall of the upper outer sleeve is provided with an inner liner.

[0006] As a preferred technical solution of this utility model, the inner wall of the lower outer sleeve is provided with a pressure relief cylinder, the outer wall of the pressure relief cylinder is provided with a plurality of pressure relief holes, and the plurality of pressure relief holes are distributed in a circumferential array on the outer wall of the pressure relief cylinder, and the outer wall of the pressure relief cylinder is provided with a fixing cylinder.

[0007] As a preferred technical solution of this utility model, the outer wall of the pressure relief cylinder is fixedly connected to the mounting cylinder body, the outer wall of the mounting cylinder body is provided with an outer mounting groove, the outer wall of the mounting cylinder body is provided with an outer mounting hole, and the inner wall of the mounting cylinder body is provided with a connecting shaft cylinder.

[0008] As a preferred technical solution of this utility model, the inner wall of the mounting cylinder is provided with an inlaid cylinder, and the mounting cylinder and the inlaid cylinder are slidably connected. The outer wall of the inlaid cylinder is provided with an inner mounting groove and an inner mounting hole.

[0009] In a preferred embodiment of this utility model, the inner mounting groove and the outer mounting groove are interconnected.

[0010] In a preferred embodiment of this invention, the inner mounting hole and the outer mounting hole are interconnected.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This multi-stage buffer spring shock absorber, by setting multiple limiting rods on the outer wall of the sliding seal ring, allows the limiting rods to guide the sliding seal ring when it slides within the inner liner while being subjected to force, and also effectively prevents the sliding seal ring from flipping over, which would cause oil backflow. In addition, the protective gasket set outside the sliding seal ring can also enhance the counterweight of the sliding seal ring during movement, thereby effectively increasing the pressure on the shock absorber spring and facilitating the reset of the equipment.

[0013] 2. This multi-stage buffer spring shock absorber has multiple pressure relief holes on the outer wall of the pressure relief cylinder. When the piston liner is pressed down, the pressure relief holes can decompose most of the kinetic energy, so that most of the energy will be consumed during the transmission process. When the remaining energy is transmitted to the mounting cylinder and the inlay cylinder, the inlay cylinder and the mounting cylinder connected by bolts are not easy to separate, thereby enhancing the shock resistance of the equipment. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a multi-stage buffer spring shock absorber;

[0015] Figure 2 This is a schematic diagram of the inner liner in a multi-stage buffer spring shock absorber.

[0016] Figure 3 This is a schematic diagram of the pressure relief ring mechanism in a multi-stage buffer spring shock absorber.

[0017] Figure 4 This is a schematic diagram of the damping shaft mechanism in a multi-stage buffer spring damper.

[0018] In the diagram: 1. Upper outer sleeve; 2. Lower outer sleeve; 3. Fixed sleeve; 31. Mounting sleeve body; 32. External mounting groove; 33. External mounting hole; 4. Connecting bushing; 5. Shock-absorbing shaft mechanism; 51. Shock-absorbing shaft guide rod; 52. Mounting bracket; 53. Sliding seal ring; 54. Protective washer; 55. Transmission shaft; 56. Shock-absorbing spring; 57. Piston liner; 6. Inner liner; 7. Pressure relief ring mechanism; 71. Pressure relief cylinder; 72. Pressure relief hole; 8. Connecting shaft sleeve; 81. Inlaid sleeve body; 82. Inner mounting groove; 83. Inner mounting hole; 9. Limiting rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4A multi-stage buffer spring shock absorber includes an upper outer sleeve 1 and a shock-absorbing shaft mechanism 5. A connecting bushing 4 is fixedly connected to the outer wall of the upper outer sleeve 1. A shock-absorbing shaft guide rod 51 is provided on the inner wall of the connecting bushing 4. A mounting bracket 52 is fixedly connected to the outer wall of the shock-absorbing shaft guide rod 51. A sliding sealing ring 53 is provided on the side of the shock-absorbing shaft guide rod 51 away from the mounting bracket 52. A protective washer 54 is fixedly connected to the side of the sliding sealing ring 53 away from the shock-absorbing shaft guide rod 51. A transmission shaft 55 is provided on the outer wall of the protective washer 54. A piston gasket 57 is fixedly connected to the outer wall of the transmission shaft 55. A shock-absorbing spring 56 is sleeved on the outer wall of the transmission shaft 55. A plurality of limiting rods 9 are provided on the outer wall of the sliding sealing ring 53, and the plurality of limiting rods 9 are distributed in a circumferential array on the sliding sealing ring 53. The outer wall of the multi-stage buffer spring shock absorber, by setting multiple limiting rods 9 on the outer wall of the sliding seal ring 53, allows the limiting rods 9 to guide the sliding seal ring 53 when it slides within the inner liner 6, while also effectively preventing the sliding seal ring 53 from flipping and causing oil backflow. Furthermore, the protective washer 54 outside the sliding seal ring 53 enhances the counterweight of the sliding seal ring 53 during movement, thereby effectively increasing the pressure on the shock absorber spring 56 and facilitating equipment reset. The upper outer sleeve 1 has a lower outer sleeve 2 on the side away from the connecting bushing 4. The inner wall of the lower outer sleeve 2 is equipped with a pressure relief ring mechanism 7. The inner wall of the upper outer sleeve 1 is equipped with an inner liner 6, and the inner wall of the lower outer sleeve 2 is equipped with a pressure relief cylinder 71. Multiple pressure relief holes 72 are provided on the outer wall of the pressure relief cylinder 71, and the multiple pressure relief holes 72 are distributed in a circumferential array on the outer wall of the pressure relief cylinder 71. A fixed cylinder 3 is provided on the outer wall of the pressure relief cylinder 71. The kinetic energy of the air compressed by the piston gasket 57 is mostly consumed by the pressure relief holes 72, and the remainder is discharged through the embedded cylinder body 81. The outer wall of the pressure relief cylinder 71 is fixedly connected to the mounting cylinder body 31. The outer wall of the mounting cylinder body 31 has an outer mounting groove 32 and an outer mounting hole 33. The inner wall of the mounting cylinder body 31 is provided with a connecting shaft cylinder 8, and the inner wall of the mounting cylinder body 31 is provided with an embedded cylinder body 81. The mounting cylinder body 31 and the embedded cylinder body 81 are slidably connected. The outer wall of the embedded cylinder body 81 has an inner mounting groove 82. The outer wall of the pressure relief cylinder 71 has an inner mounting hole 83. Multiple pressure relief holes 72 are provided on the outer wall of the pressure relief cylinder 71, so that when the piston liner 57 is pressed down, the pressure relief holes 72 can decompose most of the kinetic energy, so that most of the energy will be consumed during the transmission process. When the remaining energy is transmitted to the mounting cylinder 31 and the inlay cylinder 81, the inlay cylinder 81 and the mounting cylinder 31 connected by bolts are not easily separated. The inner mounting groove 82 and the outer mounting groove 32 are interconnected. The interconnection of the inner mounting groove 82 and the outer mounting groove 32 facilitates the later fixing, maintenance and repair of the equipment. The inner mounting hole 83 and the outer mounting hole 33 are interconnected. The interconnection of the inner mounting hole 83 and the outer mounting hole 33 facilitates the later fixing, maintenance and repair of the equipment.

[0021] Working principle: When the equipment is needed, the worker connects the external guide rod to the mounting bracket 52. Under the action of external force, the mounting bracket 52 will drive the shock-absorbing shaft guide rod 51 to extend and retract within the connecting bushing 4. The sliding seal ring 53 will rise and fall within the inner liner 6, compressing the shock-absorbing spring 56. During the descent of the protective washer 54, the shock-absorbing spring 56 will absorb most of the pressure and will be released after compression. The kinetic energy of the air compressed by the piston liner 57 will be mostly consumed by the pressure relief hole 72, and the remainder will be discharged through the embedded cylinder 81.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage buffer spring shock absorber, comprising an upper outer sleeve (1) and a shock-absorbing shaft mechanism (5), characterized in that: The outer wall of the upper outer sleeve (1) is fixedly connected to a connecting bushing (4). The inner wall of the connecting bushing (4) is provided with a shock-absorbing shaft guide rod (51). The outer wall of the shock-absorbing shaft guide rod (51) is fixedly connected to a mounting bracket (52). The shock-absorbing shaft guide rod (51) is provided with a sliding sealing ring (53) on the side away from the mounting bracket (52). The sliding sealing ring (53) is fixedly connected with a protective washer (54) on the side away from the shock-absorbing shaft guide rod (51). The outer wall of the protective washer (54) is provided with a transmission shaft (55). The outer wall of the transmission shaft (55) is fixedly connected with a piston liner (57). The outer wall of the transmission shaft (55) is sleeved with a shock-absorbing spring (56). The outer wall of the sliding sealing ring (53) is provided with multiple limiting rods (9), and the multiple limiting rods (9) are distributed in a circumferential array on the outer wall of the sliding sealing ring (53).

2. The multi-stage buffer spring shock absorber according to claim 1, characterized in that: The upper outer sleeve (1) has a lower outer sleeve (2) on the side away from the connecting bushing (4). The inner wall of the lower outer sleeve (2) is provided with a pressure relief ring mechanism (7), and the inner wall of the upper outer sleeve (1) is provided with an inner liner (6).

3. A multi-stage buffer spring shock absorber according to claim 2, characterized in that: The inner wall of the lower outer sleeve (2) is provided with a pressure relief cylinder (71), and the outer wall of the pressure relief cylinder (71) is provided with a plurality of pressure relief holes (72), and the plurality of pressure relief holes (72) are distributed in a circumferential array on the outer wall of the pressure relief cylinder (71). The outer wall of the pressure relief cylinder (71) is provided with a fixing cylinder (3).

4. A multi-stage buffer spring shock absorber according to claim 3, characterized in that: The outer wall of the pressure relief cylinder (71) is fixedly connected to the mounting cylinder body (31), the outer wall of the mounting cylinder body (31) is provided with an outer mounting groove (32), the outer wall of the mounting cylinder body (31) is provided with an outer mounting hole (33), and the inner wall of the mounting cylinder body (31) is provided with a connecting shaft cylinder (8).

5. A multi-stage buffer spring shock absorber according to claim 4, characterized in that: The inner wall of the mounting cylinder (31) is provided with an inlaid cylinder (81), and the mounting cylinder (31) and the inlaid cylinder (81) are slidably connected. The outer wall of the inlaid cylinder (81) is provided with an inner mounting groove (82) and an inner mounting hole (83).

6. A multi-stage buffer spring shock absorber according to claim 5, characterized in that: The inner mounting groove (82) and the outer mounting groove (32) are interconnected.

7. A multi-stage buffer spring shock absorber according to claim 5, characterized in that: The inner mounting hole (83) is in communication with the outer mounting hole (33).

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