CN206770502U - Gas spring damper before a kind of truck cap - Google Patents

Abstract

The utility model provides a front air pressure spring shock absorber of a truck cab, which belongs to the technical field of heavy truck shock absorbers. The beneficial effects of the utility model are: the shock absorber of the utility model is composed of an oil hydraulic cylinder, and a connecting sleeve arranged on the cylinder wall of the hydraulic cylinder is respectively connected to the air bag and the air storage chamber of the connecting sleeve, and the air bag and the air storage chamber are connected to each other. Composed of connected one-way valve I and one-way valve II, the compressed air in the airbag enters the air storage chamber through the one-way valve I. When the air pressure in the air storage chamber is greater than the air pressure in the airbag, the gas in the air storage chamber passes through the single The valve II is connected to the air bag to realize the recycling of compressed air in the air bag and the air storage chamber. The setting of the compression spring on the piston rod improves the shock absorption effect of the shock absorber and prolongs the service life of the shock absorber. The utility model The shock absorber can adapt to the needs of different road surfaces and has strong comfort.

Description

Air pressure spring shock absorber in front of truck cab

technical field

The utility model relates to the technical field of shock absorbers for heavy trucks, in particular to an air pressure spring shock absorber in front of a truck cab.

Background technique

The coil spring shock absorber undertakes the task of cushioning and shock absorption through the compression and rebound of the spring. It is a device that not only has the function of vibration isolation, but also has the function of limiting the position. It has a simple structure, small size, and easy production. Low cost, low operation and maintenance costs. The air bag shock absorber is a rubber bag reinforced with cords, filled with compressed air, and uses the compressibility of the gas to act as a spring shock absorber. The height adjustment valve can control the air pressure in the bag to make the stiffness of the air spring adjustable. Compared with the coil spring shock absorber, it has the advantages of small mass, good comfort, fatigue resistance, and long service life. It also has a lower natural vibration frequency, good isolation of high-frequency vibration and noise isolation, and can use air damping However, existing coil spring shock absorbers or airbag shock absorbers all have the problem that compressed air cannot be reciprocated and utilized, and the exhaust port is easily blocked.

How to solve the above-mentioned technical problems is the problem that the utility model faces.

Utility model content

The purpose of the utility model is to provide a truck cab front air pressure spring shock absorber.

The utility model is achieved through the following measures: a front air pressure spring shock absorber of a truck cab, comprising an oil pressure cylinder, a piston rod placed in the oil pressure cylinder, and a connecting sleeve arranged outside the oil pressure cylinder , and the compression spring connecting the hydraulic cylinder and the piston rod, wherein an air bag made of elastic material is set on one side of the connecting sleeve to close the hydraulic cylinder and the piston rod, The other side is provided with an air storage chamber, and a one-way valve I and a one-way valve II for communicating the air bag and the air storage chamber are provided on the connecting sleeve.

The one-way valve 1 includes a cylindrical valve seat, a cylindrical valve core matched with the cylindrical valve seat, an air guide hole is provided on the side of the cylindrical valve core, and the cylindrical valve core A baffle is arranged on the top, and two springs I are oppositely arranged between the baffle and the connecting sleeve.

The one-way valve II includes a valve seat with a tapered hole, a tapered valve core that is movably matched with the tapered hole of the valve seat, and a spring II that is connected to the bottom surface of the valve seat and the tapered valve core at both ends. ; The bottom surface of the valve seat is a filter mesh.

The airbag is in the shape of a cone, and a support and a fixing plate are sequentially arranged at the joint between the cone top of the airbag and the piston rod.

The cylindrical valve seat fits in the through hole of the connecting sleeve.

The beneficial effects of the utility model are: the shock absorber of the utility model is composed of an oil pressure cylinder, and a connecting sleeve arranged on the cylinder wall of the oil pressure cylinder is respectively connected to the air bag and the air storage chamber of the connecting sleeve, and the air bag and the air storage chamber are connected to each other. Composed of connected one-way valve I and one-way valve II, the compressed air in the airbag enters the air storage chamber through the one-way valve I, when the air pressure in the air storage chamber is greater than the air pressure in the airbag, the gas in the air storage chamber passes through the one-way The valve II is connected to the air bag to realize the recycling of compressed air in the air bag and the air storage chamber. The setting of the compression spring on the piston rod improves the shock absorption effect of the shock absorber and prolongs the service life of the shock absorber. The utility model The shock absorber can adapt to the needs of different road surfaces and has strong comfort.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the utility model.

Fig. 2 is a schematic structural diagram of an embodiment of the utility model.

Fig. 3 is a schematic diagram of a partially enlarged structure of area A in Fig. 2 .

FIG. 4 is a schematic diagram of a partially enlarged structure of area B in FIG. 2 .

Wherein, the reference signs are: 1, hydraulic cylinder; 2, connecting sleeve; 3, air bag; 4, air storage chamber; 5, piston rod; 6, compression spring; 7, one-way valve I; 8, one-way valve II; 7-1, cylindrical valve seat; 7-2, cylindrical valve core; 7-2-1, air guide hole; 7-3, baffle plate; 7-4, spring I; 8, one-way valve II; 8-1, valve seat; 8-2, cone-shaped valve core; 8-3, spring II; 8-1-1, filter mesh; 9, support; 10, fixed plate.

detailed description

In order to clearly illustrate the technical features of the solution, the solution will be described below through specific implementation modes.

Referring to Fig. 1 to Fig. 4, the utility model is a gas spring shock absorber in front of a truck cab, which includes a hydraulic cylinder 1, a piston rod 5 placed in the hydraulic cylinder 1, and a connection outside the hydraulic cylinder 1 sleeve 2, and the compression spring 6 connecting the hydraulic cylinder 1 and the piston rod 5, wherein an air bag 3 made of elastic material that closes the hydraulic cylinder 1 and the piston rod 5 is arranged on one side of the connecting sleeve 2, The other side of 2 is provided with an air storage chamber 4, and the connecting sleeve 2 is provided with a one-way valve I7 and a one-way valve II8 communicating with the air bag 3 and the air storage chamber 4.

The one-way valve I7 includes a cylindrical valve seat 7-1, a cylindrical valve core 7-2 matched with the cylindrical valve seat 7-1, and the side of the cylindrical valve core 7-2 is provided with an air guide hole 7-2. 2-1, a baffle 7-3 is arranged on the top of the cylindrical valve core 7-2, and two springs I7-4 are arranged between the baffle 7-3 and the connecting sleeve 2 oppositely.

The one-way valve II8 includes a valve seat 8-1 with a tapered hole, a tapered valve core 8-2 that is movably matched with the tapered hole of the valve seat 8-1, and the two ends are respectively connected to the bottom surface of the valve seat 8-1 and the cone. The spring II8-3 of the shape valve core 8-2; the bottom surface of the valve seat 8-1 is a filter mesh sheet 8-1-1.

The airbag 3 is in the shape of a cone, and a support 9 and a fixing plate 10 are sequentially arranged at the joint between the cone top of the airbag 3 and the piston rod 5 .

The cylindrical valve seat 7 - 1 is fitted in the through hole of the connecting sleeve 2 .

The undescribed technical features of the utility model can be realized by or using the prior art, so they will not be repeated here. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary skilled persons within the essential scope of the present utility model shall also belong to the protection scope of the present utility model.

Claims (5)

1. gas spring damper before a kind of truck cap, including oil hydraulic cylinder（1）, it is placed in the oil hydraulic cylinder（1）Interior piston Bar（5）, it is arranged on the oil hydraulic cylinder（1）Outside adapter sleeve（2）, and connection oil hydraulic cylinder（1）And piston rod（5）Compression bullet Spring（6）, it is characterised in that in the adapter sleeve（2）Side set and close the oil hydraulic cylinder（1）And piston rod（5）By bullet Property air bag made of material（3）, in the adapter sleeve（2）Opposite side be provided with air storage chamber（4）, in the adapter sleeve（2）On It is communicated with the air bag（3）And air storage chamber（4）Check valve I（7）With check valve II（8）.

2. gas spring damper before truck cap according to claim 1, it is characterised in that the check valve I（7） Including cylindric valve seat（7-1）, with the cylindric valve seat（7-1）The cylindric valve element being engaged（7-2）, the cylindric valve Core（7-2）Side offers gas port（7-2-1）, the cylindric valve element（7-2）Top is provided with baffle plate（7-3）, in the gear Plate（7-3）With the adapter sleeve（2）Between relative be provided with two spring I（7-4）.

3. gas spring damper before truck cap according to claim 1, it is characterised in that the check valve II （8）Valve seat including offering bellmouth（8-1）, with the valve seat（8-1）Bellmouth activity coordinate cone-shaped valve element（8- 2）, both ends connect the valve seat respectively（8-1）Bottom surface and cone-shaped valve element（8-2）Spring II（8-3）；The valve seat（8-1） Bottom surface is filter net sheet（8-1-1）.

4. gas spring damper before truck cap according to claim 1, it is characterised in that in the air bag（3） For cone-shaped, in the air bag（3）The vertex of a cone and the piston rod（5）Junction is sequentially provided with bearing（9）And fixed plate（10）.

5. gas spring damper before truck cap according to claim 2, it is characterised in that the cylindric valve seat （7-1）It is entrenched in the adapter sleeve（2）Through hole in.