CN202597327U

CN202597327U - Rapid oil cylinder

Info

Publication number: CN202597327U
Application number: CN 201220028656
Authority: CN
Inventors: 吕玉新; 彭忠诚
Original assignee: Jiashan Superpower Tools Co Ltd
Current assignee: Jiashan Superpower Tools Co Ltd
Priority date: 2012-01-29
Filing date: 2012-01-29
Publication date: 2012-12-12
Anticipated expiration: 2022-01-29

Abstract

The utility model discloses a rapid oil cylinder which mainly comprises an oil cylinder front cover, oil tanks, a cylinder body, a piston and a piston rod, an oil cylinder rear cover, a control oil pipe, and an oil cylinder control valve, wherein one end of the cylinder body is sealed by the oil cylinder rear cover to form a sealed cavity A, the other end of the cylinder body is sealed by the oil cylinder front cover and the piston rod to form a sealed cavity B, the piston and the piston rod is provided with a one-way valve which automatically opens when the pressure in cavity B is higher than that in cavity A to allow hydraulic oil to enter directly from cavity B into cavity A, and closes when the pressure in cavity B is smaller than that in cavity A, and a hydraulic control one-way valve and a plurality of oil suction one-way valves are disposed on the front cover of the oil cylinder, wherein the hydraulic control one-way valve is controlled by the pressure of the cavity A such that when the pressure in cavity A reaches a preset value, the hydraulic control one-way valve opens and the cavity B is communicated with the oil tank, i.e., the hydraulic oil in cavity B can go directly back into the oil tank, and the oil suction one-way valves disposed on the front cover of the oil cylinder closes automatically when pressure exists in cavity B and communicate cavity B with the oil tank when pressure exists in cavity B, thus to allow the hydraulic oil in the oil tank to enter into cavity B of the oil cylinder.

Description

Quick oil cylinder

Technical field

The utility model relates to the oil cylinder field, especially a kind of quick oil cylinder that is used for wood splitting machine.

Background technique

The wood splitting machine kind is a lot; Wood splitting machine manual, pneumatic, electronic, motor-driven form is arranged; Be widely used in the gardens wood industry in American-European Australia; Timber is a kind of organic energy of very environmental protection, and these countries advocate and use the timber heating-cooking etc. of lighting a fire, so all farms and even every household all use wood splitting machine; Wood splitting machine is usually by power unit both at home and abroad at present, and control valve is carried out several most of compositions of oil cylinder and frame, and carrying out oil cylinder is the single-acting or the double-act-ing hydraulic J-Horner of single-stage mostly, sees once in a while that for the length that shortens wood splitting machine the double-acting twin-stage oil cylinder of employing is arranged.The wood splitting machine operation requires oil cylinder can produce huge thrust when the beginning splitting, when splitting or wood have not been rived the back underloading, requires the oil cylinder fltting speed fast as much as possible, to increase work efficiency simultaneously.Some more large-scale wood splitting machines all adopt duplex pump in the existing technology; Promptly thereby duplex pump is worked simultaneously and is produced big flow and supply with oil cylinder and obtain fast speed when underloading; Then the big pump of duplex pump is in unloading condition automatically when load is big; Only little pump is under high pressure worked and is made oil cylinder produce huge thrust, is to reach this function through the hydraulic flow size that changes system works, but because the big pump of double pump no matter is in working state or being in unloading condition does not work; The big flow of its generation always produces some unnecessary energy losses; The flow of these more large-scale wood splitting machines is quite big simultaneously, but its speed still is undesirable, and the one-stop operation time needs more than 15 seconds; And some small-sized wood splitting machines do not have the double speed function owing to each side reasons such as costs, and its operating efficiency is extremely low, and the one-stop operation time need be more than 30 seconds.

The model utility content

The purpose of the utility model is to provide a kind of cost of production low for the deficiency that solves above-mentioned technology, efficient energy-saving, and high working efficiency, and have the quick oil cylinder of quick function.

In order to achieve the above object, the quick oil cylinder that the utility model designed, it mainly comprises oil cylinder protecgulum, fuel tank, cylinder body, piston and piston rod, oil cylinder bonnet, control oil pipe, oil cylinder control valve, cylinder body one end forms airtight A chamber through lid may enclose behind the oil cylinder; The cylinder body the other end forms sealing B chamber through oil cylinder protecgulum and piston rod; On piston and piston rod 4, be provided with one-way valve, open automatically during greater than the A cavity pressure when the B cavity pressure, hydraulic oil can directly get into the A chamber from the B chamber; Otherwise when B cavity pressure closed check valve during less than the A cavity pressure; The oil cylinder protecgulum is provided with a Pilot operated check valve and a plurality of from the oil suction one-way valve; Pilot operated check valve is controlled by the A cavity pressure, and when the A cavity pressure reached setting value, Pilot operated check valve was opened; The B chamber is communicated with fuel tank, i.e. the direct oil sump tank of the hydraulic oil in B chamber; A plurality of oil sucting one-way valves on the oil cylinder protecgulum are closed when there is pressure in the B chamber automatically, when not having pressure and fuel tank logical, the hydraulic oil in the fuel tank can get into oil cylinder B chamber.This structural feature is to improve the speed to introduce of oil cylinder piston bar through the flow direction that changes oil cylinder A, B chamber hydraulic oil.Pilot operated check valve can be opened automatically and close according to oil cylinder A cavity pressure at any time and made oil cylinder any moment in the process that moves ahead fast can produce the maximum thrust that oil cylinder can reach at any time.

In order to solve oil cylinder that many places exist and the oil circuit articulation issues between the fuel tank, adopt the fuel tank parcel to be arranged on outside the cylinder block, the oil cylinder bonnet is provided with oil cylinder control valve and unloading safety valve; Realize that easily oil cylinder A, B chamber are through front and rear covers and various valve and fuel tank UNICOM; Reach the purpose of the utility model.The oil cylinder bonnet is provided with the high voltage control oilhole simultaneously, and the high voltage control oilhole is received on the hydraulic control hole that is provided with on the oil cylinder protecgulum through the control oil pipe of cylinder body outer installment, is used for the Pilot operated check valve on the oil cylinder protecgulum is controlled.

The resulting quick oil cylinder of the utility model improves the speed to introduce of oil cylinder piston bar through the flow direction that changes oil cylinder A, B chamber hydraulic oil, can improve splitting speed greatly, improves operating efficiency.Pilot operated check valve can be opened automatically and close according to oil cylinder A cavity pressure at any time and made oil cylinder any moment in the process that moves ahead fast can produce the maximum thrust that oil cylinder can reach at any time.Thereby this quick oil cylinder, just can provide to wood splitting machine to move ahead fast and huge thrust function promptly under a very little flow at a less power source.This quick cylinder structure is compact, and reasonable in design, manufacturing cost is low, and the flow of hydraulic system is little simultaneously, can reduce hydraulic slip, improves operating efficiency, further reduces operating cost, realizes energy-saving and emission-reduction, environmental protection.

Description of drawings

Fig. 1 is the sectional view of the utility model;

Fig. 2 is the plan view of the utility model;

Fig. 3 is the oil cylinder protecgulum plan view of the utility model;

Fig. 4 is the sectional view at Fig. 3 N-N place;

Fig. 5 is the sectional view at Fig. 3 M-M place;

Fig. 6 is the oil cylinder bonnet plan view of the utility model;

Fig. 7 is the sectional view at Fig. 6 A-A place;

Fig. 8 is the sectional view at Fig. 6 B-B place.

Embodiment

Combine accompanying drawing that the utility model is done further to describe through embodiment below.

Embodiment 1:

Quick oil cylinder extremely shown in Figure 8 like Fig. 1, that the utility model is described, it mainly is made up of protecgulum 1, fuel tank 2, cylinder body 3, piston and piston rod 4, bonnet 5, control oil pipe 6 and control valve 7; Have Pilot operated check valve 11 on the protecgulum, hydraulic control mouth C2, a plurality of from oil sucting valve 12; Fuel tank 2 by the parcel oil cylinder main fuel tank 21 and with it the drop tank 22 of UNICOM form; Cylinder block 3 two ends connect with front and rear covers with screw thread; There is one-way valve 41 on piston rod and the piston 4; There are control valve 51 and safety valve 52 and high voltage control hydraulic fluid port C1 on the bonnet 5; Form oil cylinder A chamber, B chamber and fuel tank C chamber by protecgulum 1, fuel tank 2, cylinder body 3, piston and piston rod 4, a bonnet 5 by the figure assembly relation; Each enclosed cavity is provided with control valve 51 each other, from connections such as oil sucting valve 12, one-way valve 41, safe unloading valve 52, Pilot operated check valves 11;

Practical implementation method: when demand thrust during less than the setting cracking pressure of Pilot operated check valve 11; Pilot operated check valve, from the oil sucting valve Close All, oil cylinder B chamber is a closed chamber; Outwards release when high pressure oil gets into oil cylinder A chamber back piston bar, B chamber hydraulic oil has only through the 41 entering A chambeies of one-way valve on the piston rod; So only need very little flow to release so that the oil cylinder piston bar is outside fast; When receiving external force, piston rod loads; When making oil cylinder A cavity pressure rise to the setting pressure of Pilot operated check valve 11, Pilot operated check valve is opened automatically, makes oil cylinder B chamber and fuel tank logical; At this moment oil cylinder A cavity pressure is greater than the B cavity pressure; One-way valve 41 is closed automatically, makes whole piston area all bear oil pressure, produces huge thrust on the piston rod.

Claims

1. quick oil cylinder; It mainly comprises oil cylinder protecgulum (1), fuel tank (2), cylinder body (3), piston and piston rod (4), oil cylinder bonnet (5), control oil pipe (6), oil cylinder control valve (7); It is characterized in that cylinder body (3) one ends through oil cylinder bonnet (5) sealing, form airtight A chamber; Cylinder body (3) the other end forms seal space B chamber through oil cylinder protecgulum (1) and piston rod (4); On piston and piston rod (4), be provided with one-way valve (41), open automatically during greater than the A cavity pressure when the B cavity pressure, hydraulic oil can directly get into the A chamber from the B chamber; Otherwise when B cavity pressure closed check valve during less than the A cavity pressure; Oil cylinder protecgulum (1) is provided with a Pilot operated check valve (11) and a plurality of from oil suction one-way valve (12); Pilot operated check valve (11) is controlled by the A cavity pressure, and when the A cavity pressure reached setting value, Pilot operated check valve (11) was opened; The B chamber is communicated with fuel tank (2), i.e. the direct oil sump tank (2) of the hydraulic oil in B chamber; A plurality of oil sucting one-way valves (12) on the protecgulum are closed when there is pressure in the B chamber automatically, when not having pressure and fuel tank (2) logical, the hydraulic oil in the fuel tank (2) can get into oil cylinder B chamber.

2. quick oil cylinder according to claim 1 is characterized in that fuel tank (2) parcel is arranged outside the described oil cylinder (3), and oil cylinder bonnet (5) is provided with oil cylinder control valve (51) and unloading safety valve (52); Oil cylinder bonnet (5) is provided with high voltage control oilhole (C1); High voltage control oilhole (C1) is received oil cylinder protecgulum (1) through the control oil pipe (6) of cylinder body (3) outer installment and is gone up on the hydraulic control hole (C2) that is provided with, and is used for the Pilot operated check valve (11) on the oil cylinder protecgulum (1) is controlled.