CN205047567U - Excavator hydro -cylinder with adjustment mechanism with shock resistance - Google Patents

Abstract

The utility model relates to an excavator hydro -cylinder with adjustment mechanism with shock resistance, be equipped with the piston rod that has the piston in the cylinder body, the cylinder body is divide into ante -chamber and back cavity by the piston, the opening part of the cylinder body of ante -chamber is equipped with the uide bushing, be equipped with the cushion collar on the piston rod, the one end of cushion collar approaches on the interior terminal surface of piston, the one end symmetry that the cushion collar is close to the ante -chamber is provided with two at least grooves, annular slot has been seted up along circumference to the inner wall of cushion collar, annular ditch inslot is equipped with along the buffering ring of circumference removal, the piston rod is served near one of piston and is equipped with the buffer plunger, be equipped with pressure adjustment assembly in the one end of first oilhole, pressure adjustment assembly is located the circumference position in buffering hole, first oilhole and buffering hole intercommunication, it dies effectively to avoid taking place the card, prevented that the hydro -cylinder from the shake appearing and crawling the phenomenon, in order to reduce the compression shock, the impact of effectual buffering and regulating piston pole pair cylinder body, have fine buffering and shock attenuation effect, good operation stability, prolonged service life.

Description

There is controlling mechanism and shock proof excavator oil cylinder

Technical field

The utility model relates to one and has controlling mechanism and shock proof excavator oil cylinder.

Background technique

Excavator power is at work mainly derived from excavator hydraulic cylinder, and known excavator hydraulic cylinder generally comprises cylinder body, piston rod assembly, piston and oil pipe.Hydraulic jack is in rapid movement process, strong impact, noise or even mechanical collision can be produced at stroke terminal, especially in case of high pressures, this impact is more obvious, seriously have impact on the working life of oil cylinder, thus suitable braking and buffering must be carried out before end motion, to ensure the working life of system and oil cylinder, simultaneously when the piston rod in hydraulic jack is elongated to most long end, also very large impact force can be produced, can be that scraper bowl is impaired when running into hard object, in-oil cylinder part also can be impaired, particularly cylinder body and piston rod; When piston rod bounces back to most short end, also very large impact force can be produced, buffering and damping effect is undesirable, cause cylinder body poor work stability and car body vibrations, shorten the working life of oil cylinder, when the length of cushion collar is less than cushion collar construction section length, inclination can be produced in movement process, when cushion collar enters the cushion hole of cylinder cap, easily occur stuck, and there is shake and creeping phenomenon in start-up course.

Model utility content

The technical problems to be solved in the utility model is: overcome the deficiency in prior art, there is provided a kind of effectively avoid cushion collar to enter occurring in the process of cushion hole stuck, oil cylinder is opened fast, prevent oil cylinder occur shake and creeping phenomenon have controlling mechanism and shock proof excavator oil cylinder.

The utility model solves the technological scheme that its technical problem adopts: one has controlling mechanism and shock proof excavator oil cylinder, there is cylinder body, the piston rod with piston is provided with in described cylinder body, cylinder body is divided into ante-chamber and back cavity by piston, the opening of the cylinder body of ante-chamber is provided with guide sleeve, cylinder body is provided with front, the first oilhole that back cavity is communicated with and the second oilhole, second oilhole is connected with the second pipe connecting terminal, first oilhole is connected with the first pipe connecting terminal, be connected by oil pipe between first pipe connecting terminal with the second pipe connecting terminal, piston rod is provided with cushion collar, one end of cushion collar approaches on the interior edge face of piston, cushion collar is symmetrically arranged with at least two grooves near one end of ante-chamber, the inwall of cushion collar circumferentially offers annular groove, the buffering ring of circumferentially movement is provided with in annular groove, piston rod is provided with buffer plunger near one end of piston, cylinder body is provided with the cushion hole that buffer plunger can be guided to cushion when piston rod bounces back to most short end, pressure regulator is provided with in one end of the first oilhole, pressure regulator is positioned on the circumferential position of cushion hole, first oilhole is communicated with cushion hole.

Further, the middle part of described cylinder body is provided with oil pipe supporting rack, and described oil pipe is fixed on oil pipe supporting rack.

Further, described pressure regulator comprises the plug screw being located at the first oilhole aperture place, and plug screw is provided with compression spring, and compression spring is provided with safety valve, and safety valve is connected with compression spring by spring.

The beneficial effects of the utility model are: the utility model is reasonable in design, structure is simple; effectively avoid cushion collar to enter occurring in the process of cushion hole stuck; oil cylinder is opened fast; prevent oil cylinder to occur shake and creeping phenomenon, prevent oil pressure from increasing severely suddenly, to reduce compression shock simultaneously; the impact of effective buffering and regulating piston pole pair cylinder body; have well buffering and damping effect, play a protective role, good operating stability also extends the working life of oil cylinder.

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is side view of the present utility model;

Fig. 3 is the structural representation at the utility model A place;

Fig. 4 is the structural representation at the utility model B place;

Fig. 5 is the structural representation at the utility model C place.

1. cylinder bodies, 2. piston, 3. piston rod, 4. ante-chamber in figure, 5. back cavity, 6. guide sleeve, 7. the first oilhole, 8. the second oilhole, 9. the second pipe connecting terminal, 10. the first pipe connecting terminal, 11. oil pipes, 12. cushion collars, 13. grooves, 14. annular grooves, 15. buffering rings, 16. buffer plungers, 17. cushion holes, 18. pressure regulators, 19. oil pipe supporting racks, 20. plug screws, 21. compression springs, 22. safety valves, 23. springs.

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.

One as shown in Fig. 1 ~ 5 has controlling mechanism and shock proof excavator oil cylinder, there is cylinder body 1, the piston rod 3 with piston 2 is provided with in cylinder body 1, cylinder body 1 is divided into ante-chamber 4 and back cavity 5 by piston 2, the opening of the cylinder body 1 of ante-chamber 4 is provided with guide sleeve 6, cylinder body 1 is provided with front, back cavity 4, 5 the first oilhole 7 and the second oilholes 8 be communicated with, second oilhole 8 is connected with the second pipe connecting terminal 9, first oilhole 7 is connected with the first pipe connecting terminal 10, be connected by oil pipe 11 between first pipe connecting terminal 10 with the second pipe connecting terminal 9, piston rod 3 is provided with cushion collar 12, one end of cushion collar 12 approaches on the interior edge face of piston 2, cushion collar 12 is symmetrically arranged with at least two grooves 13 near one end of ante-chamber 4, the inwall of cushion collar 12 circumferentially offers annular groove 14, the buffering ring 15 of circumferentially movement is provided with in annular groove 14, piston rod 3 is provided with buffer plunger 16 near one end of piston 2, cylinder body 1 is provided with the cushion hole 17 that buffer plunger 16 can be guided to cushion when piston rod 3 bounces back to most short end, pressure regulator 18 is provided with in one end of the first oilhole 7, pressure regulator 18 is positioned on the circumferential position of cushion hole 17, first oilhole 7 is communicated with cushion hole 17.

The middle part of cylinder body 1 is provided with oil pipe supporting rack 19, described oil pipe 11 is fixed on oil pipe supporting rack 19, pressure regulator 18 comprises the plug screw 20 being located at the first oilhole 7 aperture place, plug screw 20 is provided with compression spring 21, compression spring 21 is provided with safety valve 22, and safety valve 22 is connected with compression spring 21 by spring 23.

Concrete piston rod 4 is provided with cushion collar 12, and one end of cushion collar 12 is resisted against on the interior edge face of piston 2, and cushion collar 12 alleviates impact force to a certain extent, plays buffer protection function, ensures stability during cylinder efficient further.Oil pipe supporting rack 19 is provided with in the middle part of cylinder body 1, fixed; Owing to being provided with pressure regulator 18 and buffer plunger 16, when piston rod 3 bounces back to most short end or most long end, effectively can cushion the impact with regulating piston bar 3 pairs of cylinder bodies 1, there is well buffering and damping effect, play a protective role, good operating stability also extends the working life of oil cylinder simultaneously; In cushion collar 12 front end, groove 13 is set, can prevent oil pressure from increasing severely suddenly, to reduce compression shock, by pressure regulator 18 and buffering ring 15, the fluid in back cavity 5 is sent in ante-chamber 4, oil cylinder can be made like this to open fast, prevent oil cylinder occur shake and creep.

Above-mentioned mode of execution is only for illustrating technical conceive of the present utility model and feature; its object is to person skilled in the art can be understood content of the present utility model and be implemented; protection domain of the present utility model can not be limited with this; all equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.

Claims (3)

1. one kind has controlling mechanism and shock proof excavator oil cylinder, there is cylinder body (1), it is characterized in that: in described cylinder body (1), be provided with the piston rod (3) with piston (2), cylinder body (1) is divided into ante-chamber (4) and back cavity (5) by piston (2), the opening of the cylinder body (1) of ante-chamber (4) is provided with guide sleeve (6), cylinder body (1) is provided with front, back cavity (4, 5) the first oilhole (7) be communicated with and the second oilhole (8), second oilhole (8) is connected with the second pipe connecting terminal (9), first oilhole (7) is connected with the first pipe connecting terminal (10), be connected by oil pipe (11) between first pipe connecting terminal (10) with the second pipe connecting terminal (9), piston rod (3) is provided with cushion collar (12), one end of cushion collar (12) approaches on the interior edge face of piston (2), cushion collar (12) is symmetrically arranged with at least two grooves (13) near one end of ante-chamber (4), the inwall of cushion collar (12) circumferentially offers annular groove (14), the buffering ring (15) of circumferentially movement is provided with in annular groove (14), piston rod (3) is provided with buffer plunger (16) near one end of piston (2), cylinder body (1) is provided with the cushion hole (17) that buffer plunger (16) can be guided to cushion when piston rod (3) bounces back to most short end, pressure regulator (18) is provided with in one end of the first oilhole (7), pressure regulator (18) is positioned on the circumferential position of cushion hole (17), first oilhole (7) is communicated with cushion hole (17).

2. according to claim 1 have controlling mechanism and shock proof excavator oil cylinder, it is characterized in that: the middle part of described cylinder body (1) is provided with oil pipe supporting rack (19), described oil pipe (11) is fixed on oil pipe supporting rack (19).

3. according to claim 1 have controlling mechanism and shock proof excavator oil cylinder, it is characterized in that: described pressure regulator (18) comprises the plug screw (20) being located at the first oilhole (7) aperture place, plug screw (20) is provided with compression spring (21), compression spring (21) is provided with safety valve (22), and safety valve (22) is connected with compression spring (21) by spring (23).