Rubber gas damper

Abstract

The present invention relates to the field of power transmission, namely, a rubber gas-resistance elastic shock absorber. It comprises an inner ring of a shock absorber connecting flange, the input side of the inner ring of the shock absorber connecting flange is provided with a shock absorber connecting flange, and the output side of the inner ring of the shock absorber connecting flange is provided with a shock absorber output shaft; the inner ring of the shock absorber connecting flange has a plurality of inner convex plate ribs radiating inwards at intervals along the circumference, and the outer ring of the shock absorber output shaft is also designed to have a plurality of outer convex plate ribs radiating outwards at intervals, and the outer convex plate ribs are plugged in with the inner convex plate ribs at intervals, and the gas block and the rubber block are placed in the space surrounded by the inner ring, the outer ring, the outer convex plate ribs and the inner convex plate ribs, and the outer convex plate ribs are contact-connected with the exposed end of the piston rod of the gas block; the pressure plates on both sides of the inner ring of the shock absorber connecting flange are bolted to the end face of the shock absorber connecting flange and the side end face of the shock absorber output shaft. The present invention uses the gas-resistance structure as a filter and protection for the peak load during overload, and has a reasonable structure and good shock absorption effect.

Description

Technical Field

[0001] The invention relates to the field of power transmission, namely a rubber gas-resistance elastic shock absorber, and is particularly suitable for transmission of a diesel engine power system with a large impact load. Background Art

[0002] In the prior art, there are two main types of shock absorbers used in power transmission, including spring shock absorbers and rubber shock absorbers. These shock absorbers are mainly used in situations where the load has a large impact during the transmission process. They can absorb the impact load generated by the load and filter out the peak load part of the impact load. Protect the main transmission components and prime movers from being damaged by the impact load. Therefore, this type of shock absorber is widely used in practice and is widely used in reducer transmission systems, diesel engine power systems, ship power systems, etc. The shock absorption effect of these shock absorbers is mainly completed by the elastic elements therein. The main materials of these elastic elements are polyurethane, rubber, nylon, springs, etc. Due to the strength of these materials themselves and the structure of the elastic elements, for high-power and high-impact load units, these shock absorbers often have a short service life and even cannot play a role in buffering impacts, and cannot meet the requirements of the use conditions. In the past, the connection between the diesel engine power system and the gearbox was directly connected or connected with a spring shock absorber. When the impact load is large, the spring is often damaged. Increasing the spring will cause excessive stiffness, insufficient buffering performance, and damage to other transmission components. Summary of the invention

[0003] The purpose of the present invention is to provide a rubber air-resistance elastic shock absorber with high elasticity, large torque, long life and load protection for composite use of rubber air-resistance in view of the above-mentioned shortcomings.

[0004] The technical solution of the present invention is: a rubber gas-resistance elastic shock absorber, characterized in that it includes an inner ring of a shock absorber connecting flange, the input side of the inner ring of the shock absorber connecting flange is provided with a shock absorber connecting flange, and the output side of the inner ring of the shock absorber connecting flange is provided with a shock absorber output shaft; the inner ring of the shock absorber connecting flange has a plurality of inner convex plate ribs radiating inward at intervals along the circumference, and the outer ring of the shock absorber output shaft is also designed to have a plurality of outer convex plate ribs radiating outward at intervals, and the outer convex plate ribs are plugged into the inner convex plate ribs at intervals, and the shock absorber connecting flange is provided with a plurality of inner convex plate ribs radiating outward at intervals. The air resistor and the rubber block are placed in the space surrounded by the flange inner ring, the shock absorber output shaft outer ring, the outer convex plate ribs and the inner convex plate ribs, and the outer convex plate ribs are in contact and connected with the exposed end of the piston rod of the air resistor; the pressure plates on both sides of the inner ring of the shock absorber connecting flange are bolted to the end face of the shock absorber connecting flange and the side end face of the shock absorber output shaft; the air resistor is fixed to the inner ring of the shock absorber connecting flange by bolts, and the rubber block is in contact with the air resistor and is located on the side of the air resistor away from the inner ring of the shock absorber connecting flange.

[0005] In the above scheme:

[0006] The air resistor comprises an air resistor housing, wherein the air resistor housing has one or more piston chambers, wherein the piston chamber has a piston rod, a spring, and a screw plug connected in sequence, and the screw plug is processed with a vent hole. The output shaft of the shock absorber rotates, acting on the piston rod to displace it, compressing the air in the air resistor housing chamber to form back pressure. The air is discharged through the back pressure chamber, and the impact energy is released in this process. After the energy is released, the piston rod is reset by the spring.

[0007] The more than one piston chambers are two piston chambers respectively processed at the left and right ends of the air resistor housing.

[0008] The plurality of intervals are divided into four equal parts.

[0009] Fix the air damper to the inner ring of the shock absorber connecting flange by bolts.

[0010] The present invention is mainly applied to the main transmission system of the diesel engine power system. Since the diesel engine power system generally has a bad working condition, a large impact load, and a high service life requirement, the existing shock absorbers cannot meet the requirements of the working conditions. The present invention has the characteristics of high elasticity, large torque, long service life, and load protection. It can also be widely used in other power systems.

[0011] The advantages of the present invention are: 1. The present invention uses rubber blocks as shock absorbers for the diesel engine power system, and uses an air resistance structure as a filter and protection for the peak load during overload, with a reasonable structure and good shock absorption effect. 2. It can widely replace existing spring shock absorbers and rubber shock absorbers, greatly improving the service life and impact resistance of the diesel engine power system. It has broad application prospects and high economic benefits. 3. There are two piston cavities machined at the left and right ends of the air resistance shell, and two sets of "air resistances". When the impact load acts, the force balance is good, the operation is more stable, and the shock absorption effect is improved.

[0012] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present invention.

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure along the AA section.

[0015] Figure 3 This is a simplified diagram of the air resistor structure.

[0016] Figure 4 yes Figure 3 Top view of the structural diagram.

[0017] Figure 5 It is a schematic diagram of the connecting flange structure.

[0018] Figure 6 yes Figure 5 Left view structural diagram. DETAILED DESCRIPTION

[0019] See also Figure 1 -6, the names of the parts are as follows: shock absorber connecting flange 1, shock absorber output shaft 2, air resistor 3, rubber block 4, bolt 5, pressure plate 6, air resistor housing 7, piston rod 8, sealing ring 9, plug 10, spring 11, shock absorber connecting flange inner ring 12, inner convex plate rib 13, shock absorber output shaft outer ring 14, outer convex plate rib 15, sealing ring 16, vent 17.

[0020] See also Figure 1 , 2 , 5, 6, a rubber gas resistance elastic shock absorber, comprising a shock absorber connecting flange inner ring 12, the shock absorber connecting flange inner ring 12 having a shock absorber connecting flange 1 on the input side, and a shock absorber output shaft 2 on the output side of the shock absorber connecting flange inner ring 12; the shock absorber connecting flange inner ring 12 has four inwardly radiating inner convex plate ribs 13 (four equal divisions are best, but not limited thereto) at intervals along the circumference, the outer circle has a positioning stop, the shock absorber output shaft outer ring 14 is also designed to have a plurality of outwardly radiating outer convex plate ribs 15 (four equal divisions), the outer convex plate ribs 15 are spaced and plugged into the inner convex plate ribs 13, and are used in conjunction with the shock absorber connecting flange inner ring 12. The air damper 3 and rubber block 4 (one group of each outer convex plate rib 15 on the left and right) are placed in the space surrounded by the inner ring 12 of the shock absorber connection flange, the outer ring 14 of the shock absorber output shaft, the outer convex plate rib 15 and the inner convex plate rib 13. The outer convex plate rib 15 touches and connects with the exposed end of the piston rod 8 of the air damper 3, and most of the impact energy is released through the air damper. In this way, the rubber block 4 is pressed in the closed space formed by the inner ring 12 of the shock absorber connection flange, the shock absorber output shaft 2 and the pressure plate 6. The pressure plates 6 on both sides of the inner ring 12 of the shock absorber connection flange are bolted to the end face of the shock absorber connection flange 1 and the side end face of the shock absorber output shaft. The air damper 3 is fixed to the inner ring 12 of the shock absorber connection flange by bolts 5 (8 bolts are arranged along the circumference). The rubber block 4 is arranged in contact with the air damper 3 and is located on the side of the air damper 3 away from the inner ring 12 of the shock absorber connection flange. The shock absorber connection flange 1 is connected to the flywheel end of the diesel engine by bolts.

[0021] See also Figure 3 , 4The air blocker 3 comprises an air blocker housing 7, and two piston chambers are processed at the left and right ends of the air blocker housing 7, so that the operation is more stable and the shock absorption effect is improved. Each piston chamber has a piston rod 8, a spring 11, and a screw plug 10 connected in sequence, and a vent hole 17 is processed on the screw plug 10. After two sealing rings 16 are installed on the piston rod 8, it is put into the piston chamber, and the piston rod 8 is pressed by the spring 11 and the screw plug 10. A very small vent hole 17 is processed on the screw plug 10. When the piston rod 8 is squeezed, air back pressure is formed in the piston chamber, and the air is discharged through the vent hole 17 of the screw plug 10. Since the vent hole 17 is very small, air resistance will be formed, which is equivalent to the energy formed by the impact load being absorbed by the resistance formed by the air resistance. The greater the impact load, the greater the air resistance pressure, and the greater the rigidity of the air block, so that the diesel engine unit and the rubber block 4 are protected from damage. After the impact load is released, the piston rod 8 is reset by the spring 11 to prepare for the next absorption of impact energy. The back side of the air resistor housing 7 is in a concave arc shape, so as to be in close contact with the rubber block 4 with a convex arc edge.

[0022] The present invention has been subjected to an impact load test on a torsion test bench for 1000 hours, and it has been experimentally verified that no failure occurs during the entire working cycle. At the same time, the input load and the output load are tested. It can be seen from the data in the impact load test report obtained through the test that it has a high filtering and absorption capacity for the input impact load, can effectively protect the diesel engine power system from damage, and can also protect the stability of the system's load transmission, and has significant impact resistance and shock absorption effects, as shown in Table 1.

[0023] Rubber gas-resistance elastic shock absorber impact load test report experimental data

[0024] Test speed: greater than 15mm / s. Maximum test torque: 4550Nm. Test data:

[0025] Table 1

[0026]

[0027] Method of use: The torque output by the diesel engine is output through the flywheel end and transmitted to the shock absorber connection flange 1 connected thereto. The shock absorber connection flange 1 transmits the torque to the shock absorber output shaft 2 by squeezing the rubber block 4. The shock absorber output shaft 2 is connected to the load mechanism behind to achieve the output of torque. In this process, the rubber block 4 can not only buffer the torque output by the diesel engine, make the torque output smooth and stable, and reduce the noise and vibration of the unit, but also absorb the impact energy when the load has an impact load, thereby protecting the diesel unit. When the impact load is too large and the rubber block 4 cannot absorb such a large impact energy and is easily damaged, the outer convex plate rib 15 on the outer ring of the shock absorber output shaft 2 contacts the air resistor 3. The stiffness of the air resistor 3 increases with the increase of the impact load. It can quickly absorb and release the impact energy, thereby filtering out the peak torque of the impact load, protecting the diesel unit from the impact load, and protecting the rubber block 4 from damage, thereby extending the service life of the rubber block 4.

[0028] The above description is only a specific implementation mode of the present invention, and various examples do not constitute a limitation on the essential content of the present invention.

Claims

1. Rubber gas-resistance elastic shock absorber, Features The invention comprises a shock absorber connecting flange inner ring (12), the input side of the shock absorber connecting flange inner ring (12) is provided with a shock absorber connecting flange (1), and the output side of the shock absorber connecting flange inner ring (12) is provided with a shock absorber output shaft (2); the shock absorber connecting flange inner ring (12) has a plurality of inner convex plate ribs (13) radiating inwardly at intervals along the circumference, the shock absorber output shaft outer ring (14) is similarly designed with a plurality of outer convex plate ribs (15) radiating outwardly at intervals, the outer convex plate ribs (15) and the inner convex plate ribs (13) are plugged in at intervals, an air block (3) and a rubber block (4) are placed in a space enclosed by the shock absorber connecting flange inner ring (12), the shock absorber output shaft outer ring (14), the outer convex plate ribs (15) and the inner convex plate ribs (13), and the outer convex plate ribs are provided with a plurality of inner convex plate ribs (15) and the inner convex plate ribs (13). (15) is in contact with the exposed end of the piston rod (8) of the air resistor (3); the pressure plates (6) on both sides of the inner ring (12) of the shock absorber connecting flange are bolted to the end surface of the shock absorber connecting flange (1) and the end surface of the shock absorber output shaft; the air resistor (3) comprises an air resistor housing (7), the air resistor housing (7) has one or more piston cavities, the piston cavities have piston rods (8), springs (11) and screw plugs (10) connected in sequence, and the screw plugs (10) are processed with air vents (17); the air resistor (3) is fixed to the inner ring (12) of the shock absorber connecting flange by bolts (5), and the rubber block (4) is arranged in contact with the air resistor (3) and is located on the side of the air resistor (3) away from the inner ring (12) of the shock absorber connecting flange.

2. The rubber gas-resistance elastic shock absorber according to claim 1, Features The one or more piston cavities are two piston cavities machined at the left and right ends of the air resistor housing (7).

3. The rubber gas-resistance elastic shock absorber according to claim 2, Features The plurality of intervals are divided into four equal parts.

4. The rubber gas-resistance elastic shock absorber according to claim 3, Features The air damper (3) is fixed to the inner ring (12) of the shock absorber connecting flange by means of bolts (5).

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