CN218718419U

CN218718419U - End cover assembly of shock absorber

Info

Publication number: CN218718419U
Application number: CN202222751992.4U
Authority: CN
Inventors: 徐林昌; 李建国; 周强
Original assignee: JIANGYIN LINGE TECHNOLOGY CO LTD
Current assignee: JIANGYIN LINGE TECHNOLOGY CO LTD
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-24
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to a bumper shock absorber end cover assembly, include the end cover board and install the buffering round pin above that, valve joint and connecting bolt, the head of valve joint inserts in the through-hole of end cover board, and be formed with the welding groove of the annular structure of packing solder between the head top outer wall of valve joint and the top inner wall of through-hole, the step face of valve joint is shelved on the surface of end cover board, and the outer fringe arch of the step face of valve joint is provided with the annular structure, the surface cooperation of end cover board is provided with the ring channel that supplies the annular structure embedding, it links to each other through the resistance welding between annular structure and the ring channel. The utility model relates to a bumper shock absorber end cover assembly welds the connection sealing performance who cooperates brand-new connection structure to guarantee valve joint through resistance welding and resistance, guarantees its life to resistance welding technology is more simple and high-efficient.

Description

End cover assembly of shock absorber

Technical Field

The utility model relates to an end cover assembly especially relates to an end cover assembly structure for on air damper, belongs to bumper shock absorber technical field.

Background

At present, heavy trucks all need to install the bumper shock absorber and realize the function of moving away to avoid possible earthquakes, generally adopt the fluid pressure type bumper shock absorber to install between axle and frame, utilize the interior oil liquid measure of relief valve control fluid pressure bumper shock absorber to realize the function of moving up and down to move away to the frame. However, in the practical application process, it is found that the shock absorber cannot be effectively identified when the shock absorber faces overload, so that companies develop air shock absorbers, the shock absorbing function is realized by using compressed air, and the material parameters of a rubber bag body wrapping the compressed air are adjusted, so that when a vehicle is overloaded, the compressed air is further compressed and boosted by the vehicle, and further, the bag body is cracked and deflated due to the failure of bearing the high pressure of the compressed air, the truck frame is collapsed, the truck cannot normally run, and therefore the vehicle cannot be in an overload state; the technical scheme adopts a 'rubber product subjected to repeated deformation and a composition for manufacturing the same' disclosed in a patent CN200980140954.X of PCT entering China.

The principle of the air damper is that the edge of the end cover assembly wraps the top edge of the bag body, the bottom edge of the bag body is clamped and fixedly connected with the top edge of the base of the barrel structure, the bottom of the base is fixedly connected with an axle, the outer wall of the bag body wraps the outer wall of the base of the barrel structure after being folded reversely, compressed air is introduced through a valve joint on the end cover assembly, the connection with a truck frame is realized through a connecting bolt on the end cover assembly, and when a truck runs on a bumpy road surface or is overweight, the pressure is transmitted to an end cover plate of the end cover assembly through the connecting bolt, so that the end cover plate moves downwards to compress the compressed air in the bag body; when the overload condition disappears, the compressed air pushes the end cover plate to move upwards; thereby implementing the avoidance function. In the whole using process, if the overloaded weight exceeds a limit value, namely the pressing distance of the end cover plate exceeds a preset value, the capsule body is broken at the moment, so that the frame directly presses the end cover plate to fall down, and the buffering is realized by the buffer pin falling to the bottom of the base of the barrel structure in the second process, so that the damage to the axle is avoided; therefore, the air damper can be in an inoperable state when overload occurs, so that the vehicle is forced to stop running, and the traffic safety is ensured.

In practical application of the conventional air damper, the buffering pin and the valve joint are welded on the end cover plate in a gas shielded welding and arc welding mode, and a raised welding ring is generated during welding, so that when the buffering pin is inserted into the insertion hole in the top of the base, the raised welding ring causes unsmooth matching; meanwhile, the sealing performance between the valve joint and the end cover plate cannot be guaranteed by gas shielded welding and arc welding, and particularly, as the acid pickling surface of the end cover plate needs to be pickled after welding, the pickling solution enters a gap between the valve joint and the end cover plate, so that the service life of the valve joint is influenced by slowly overlooking.

In view of the foregoing, there is a need for a shock absorber end cap assembly that addresses the above-identified problems.

Disclosure of Invention

An object of the utility model is to overcome the aforesaid not enough, provide a bumper shock absorber end cover assembly, weld through resistance and weld the connection sealing performance that cooperates the brand-new connection structure of resistance and guarantee valve joint, guarantee its life to resistance welds more simply and high-efficiently of technology.

The purpose of the utility model is realized like this:

a shock absorber end cover assembly comprises an end cover plate, a buffering pin, a valve joint and a connecting bolt, wherein the buffering pin, the valve joint and the connecting bolt are installed on the end cover plate, the head of the valve joint is inserted into a through hole of the end cover plate, a welding groove of an annular structure filled with welding flux is formed between the outer wall of the top end of the head of the valve joint and the inner wall of the top end of the through hole, the step surface of the valve joint is placed on the outer surface of the end cover plate, the annular structure is arranged on the outer edge of the step surface of the valve joint in a protruding mode, an annular groove for the annular structure to be embedded into is formed in the outer surface of the end cover plate in a matched mode, and the annular structure is connected with the annular groove in a welded mode through resistance welding.

Preferably, the outer surface of the end cover plate is provided with a smooth surface.

Preferably, the edge folding structure is folded downwards around the end cover plate, and the end face of the edge folding structure is of a smooth arc-shaped structure.

Preferably, the center of the inner surface of the end cover plate is resistance welded with a buffer pin, and the end part with small buffer is provided with a pin cap.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a resistance welds the brand-new ring of cooperation, groove cooperation structure has guaranteed valve joint's connection sealing performance, has stopped the acidizing fluid and has got into inside possibility, avoids its corruption, has guaranteed its life. Compared with a robot device used for gas shield welding electric arc welding, the device used for resistance welding and laser welding has simpler structure and simpler process flow, and is beneficial to reducing the manufacturing cost and improving the production efficiency.

Drawings

Fig. 1 is a top view of the end cap assembly of the shock absorber of the present invention.

Fig. 2 is a bottom view of the damper end cap assembly of the present invention.

Fig. 3 is a side sectional view of the end cap assembly of the shock absorber.

Fig. 4 is a partial cross-sectional view of the damper end cap assembly of the present invention taken at a point a of fig. 3.

Fig. 5 is a partial cross-sectional view of the damper end cap assembly of the present invention taken at B of fig. 3.

Wherein:

the valve comprises an end cover plate 1, a buffer pin 2, a valve joint 3 and a connecting bolt 4;

1.1 of folded edge, 1.2 of positioning salient point, 1.3 of positioning groove and 1.4 of welding groove;

the arc end surface is 1.1.1;

the pin cap 2.1, the welding ring 2.2 and the positioning groove 2.3;

step surface 3.1, positioning ring 3.2 and welding groove 3.3.

Detailed Description

Referring to fig. 1 to 5, the utility model relates to a shock absorber end cover assembly, include the end cover plate 1 of circular structure, the outer fringe turn-over downwards all around of end cover plate 1 is formed with hem 1.1, and hem 1.1's terminal surface is circular arc terminal surface 1.1.1, turn over in hem 1.1 when turning over the edge fixation of utricule, make hem 1.1 upset inwards through hemming mechanism, the outer wall contact of circular arc terminal surface 1.1.1 this moment, because the existence of circular arc terminal surface 1.1.1, can not lead to the fact the damage to the outer wall of utricule in the upset process, can grasp utricule roof outer wall all around after this limit is turned over to roll.

Furthermore, the protruding location bump 1.2 that is provided with in the internal surface center on the end cover board 1, the bottom of buffering round pin 2 is provided with supplies location bump 1.2 male positioning groove 2.3, the welding ring 2.2 that the 2 bottoms of buffering round pin set up inserts the welding intra-annular on the 1 internal surface of end cover board, make buffering round pin 2 fixed mounting on the internal surface of end cover board 1 through the mode of resistance welding, thereby greatly reduce the size of the welding ring that forms after the welding, the effectual interference that the welding ring after having avoided welding caused follow-up installation. Meanwhile, the top of the buffer pin 2 is provided with a pin cap 2.1 with a slightly larger diameter, and the pin cap 2.1 and the buffer pin 2 are of an integrated structure.

Furthermore, the valve joint 3 is inserted into the end cover plate 1, the small end of the valve joint 3 is inserted into the through hole in the end cover plate 1, the outer wall of the small end of the valve joint 3 is provided with a welding groove 3.3, the inner wall of the through hole in the end cover plate 1 is provided with a welding groove 1.4, the welding groove 3.3 and the welding groove 1.4 form a V-shaped groove of an annular structure, welding filler in the V-shaped groove is welded and connected in a laser welding mode, therefore, compared with the traditional welding, the welded welding ring structure is smaller, the appearance is more attractive, and the sealing effect is better. Meanwhile, the valve joint 3 is provided with an annular raised positioning ring 3.2 on the step surface 3.1 in contact with the outer surface of the end cover plate 1, and correspondingly, the positioning groove 1.3 of an annular structure for inserting the positioning ring 3.2 is arranged on the outer surface of the end cover plate 1, and the positioning ring 3.2 and the groove wall of the positioning groove 1.3 are tightly welded to form an integral structure in an electric resistance welding mode, so that when the acid pickling treatment forms the smooth outer surface of the end cover plate 1, acid liquor is effectively prevented from entering a gap between the valve joint 3 and the end cover plate 1 during acid pickling, and the service life of the valve joint is prolonged.

Furthermore, a connecting bolt 4 is inserted into the end cover plate 1, and the connecting bolt 4 has stronger torque and strength through heat treatment, so that the safety and reliability in application are ensured.

In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims

1. The utility model provides a bumper shock absorber end cover assembly, includes end cover plate and installs buffer pin, valve joint and connecting bolt on it, its characterized in that:

the head of the valve joint is inserted into the through hole of the end cover plate, a welding groove of an annular structure filled with welding flux is formed between the outer wall of the top end of the head of the valve joint and the inner wall of the top end of the through hole, the step surface of the valve joint is placed on the outer surface of the end cover plate, the annular structure is arranged on the outer edge of the step surface of the valve joint in a protruding mode, an annular groove for embedding the annular structure is formed in the outer surface of the end cover plate in a matched mode, and the annular structure is connected with the annular groove in a welded mode through resistance welding.

2. The shock absorber end cap assembly as set forth in claim 1, wherein: the outer surface of the end cover plate is a smooth surface.

3. The shock absorber end cap assembly as set forth in claim 1, wherein: the periphery of the end cover plate is downwards folded with a folded edge structure, and the end face of the folded edge structure is of a smooth cambered surface structure.

4. The shock absorber end cap assembly as set forth in claim 1, wherein: the center of the inner surface of the end cover plate is resistance welded with a buffer pin, and the small end part of the buffer pin is provided with a pin cap.