CN202073869U - Dual-speed oil cylinder - Google Patents
Dual-speed oil cylinder Download PDFInfo
- Publication number
- CN202073869U CN202073869U CN2011201393419U CN201120139341U CN202073869U CN 202073869 U CN202073869 U CN 202073869U CN 2011201393419 U CN2011201393419 U CN 2011201393419U CN 201120139341 U CN201120139341 U CN 201120139341U CN 202073869 U CN202073869 U CN 202073869U
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- CN
- China
- Prior art keywords
- oil cylinder
- piston rod
- cylinder body
- fixed
- fixed piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a dual-speed oil cylinder which mainly comprises a cylinder body, an oil cylinder front cover, an oil cylinder back cover, a large piston and a movable piston rod, wherein the other end of the cylinder body and the movable piston form a sealing space by the oil cylinder front cover; the large piston is arranged at one end of the movable piston rod; the movable piston rod is a hollow structure; a fixed piston rod is arranged in the movable piston rod; the fixed piston rod is a hollow structure and is communicated at both ends; one end of the fixed piston rod is connected with the oil cylinder back cover; one end of the movable piston rod in the cylinder body is sealed with the outer wall of the fixed piston rod by the large piston; and the large piston is connected on the fixed piston rod in a sliding way. In the dual-speed oil cylinder, the change of the pushing force is realized by adopting different compression areas of the movable piston rod and the large piston, meanwhile, the pushing speed and the retraction speed of the oil cylinder are fast when the small compressed area is used, therefore, the wood splitting speed can be greatly increased and the operation efficiency is improved. The dual-speed oil cylinder is provided with a sequential regulating valve and can automatically realize the switching between the rapid propulsion and large thrust force in allusion to the requirement of the thrust force and is simple and convenient to operate.
Description
Technical field
The utility model relates to the oil cylinder field, especially a kind of double speed 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, 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 relatively large wood splitting machines all adopt duplex pump in the prior art, 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, be to reach this function by 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 relatively large 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 this utility model is to provide a kind of cost of production low for the deficiency that solves above-mentioned technology, efficient energy-saving, high working efficiency, and the double speed oil cylinder with double speed function.
In order to achieve the above object, the double speed oil cylinder that the utility model is designed, it mainly comprises cylinder body, the oil cylinder protecgulum, the oil cylinder bonnet, big piston, fixed piston bar and moving piston rod, cylinder body one end is by the sealing of oil cylinder bonnet, the cylinder body the other end forms seal space by oil cylinder protecgulum and moving piston rod, big piston is arranged on an end of moving piston rod, moving piston rod is a hollow structure, in moving piston rod, the fixed piston bar is set, the fixed piston bar is that hollow structure and two ends communicate, fixed piston bar one end is connected with the oil cylinder bonnet, the moving end of piston rod in cylinder body is by big piston and fixed piston bar closed front, and big piston is slidingly connected on the fixed piston bar, in the cylinder body outer installment fuel tank is arranged.This structural feature is to utilize the hydraulic pressure lifting surface area that changes oil cylinder to reach the purpose that changes thrust, can also change simultaneously to push away speed.
Can finish switching when the big or small thrust requirements of difference automatically in order to make oil cylinder, on the oil cylinder bonnet, be provided with oil distributing valve, oil distributing valve comprises working connection, working connection directly is communicated with the fixed piston bar, and be communicated with big piston, cylinder body and the formed closed chamber of fixed piston bar by sequence valve, closed chamber is provided with from oil sucting valve with from outlet valve, all directly is communicated with fuel tank from oil sucting valve with from outlet valve.This structure can realize providing the function of bigger thrust during greater than the pressure of sequential adjustment valve when the demand thrust function that oil cylinder can advance fast during less than the pressure of sequence valve with when demand pressure.
Better for the sealability that makes oil cylinder, adopt the fixed piston bar to be tightly connected by first quarter moon baffle ring and oil cylinder bonnet, big piston is by being tightly connected between black box and cylinder body, the fixed piston bar.
In order to reduce the volume of oil cylinder, adopt the fuel tank parcel to be arranged on outside the cylinder body.
The resulting double speed oil cylinder of the utility model, adopt the different big or small compression areas that move piston rod and big piston to realize the change of thrust, simultaneously can be when using less compression area can the time oil cylinder push away speed and retraction speed fast, can improve splitting speed greatly, the raising operating efficiency.Be provided with the sequential adjustment valve, can realize the switching between propelling fast and the high thrust automatically, operate more simple and convenient at the demand of thrust.This double speed oil cylinder just can provide fltting speed and huge thrust faster to wood splitting machine under a less hydraulic fluid pressure and flow velocity in addition.This double speed cylinder structure compactness, 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 a structural representation of the present utility model;
Fig. 2 is a partial schematic diagram of the present utility model;
Fig. 3 is the sectional view of oil cylinder bonnet of the present utility model;
Fig. 4 is a hydraulic system principle figure of the present utility model.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the double speed oil cylinder that present embodiment is described, it mainly comprises cylinder body 4, oil cylinder protecgulum 8, oil cylinder bonnet 2, big piston 6, fixed piston bar 1 and moving piston rod 3, cylinder body 4 one ends are by 2 sealings of oil cylinder bonnet, cylinder body 4 the other ends form seal space by oil cylinder protecgulum 8 and moving piston rod 3, big piston 6 is arranged on an end of moving piston rod 3, moving piston rod 3 is a hollow structure, in moving piston rod 3, be provided with fixed piston bar 1, fixed piston bar 1 communicates for hollow structure and two ends, fixed piston bar 1 one ends are connected with oil cylinder bonnet 2, the moving end of piston rod 3 in cylinder body 4 is by big piston 6 and fixed piston bar 1 closed front, and big piston 6 is slidingly connected on fixed piston bar 1, in cylinder body 4 outer installment fuel tank 9 is arranged, and fuel tank 9 parcels are arranged on outside the cylinder body 4.
On oil cylinder bonnet 2, be provided with oil distributing valve 11, oil distributing valve 11 comprises working connection 10, working connection 10 directly is communicated with fixed piston bar 1, and be communicated with big piston 6, cylinder body 4 and fixed piston bar 1 formed closed chamber 15 by sequence valve 14, closed chamber 15 is provided with from oil sucting valve 13 with from outlet valve 12, all directly is communicated with fuel tank 9 from oil sucting valve 13 with from outlet valve 12.
Fixed piston bar 1 is tightly connected by first quarter moon baffle ring 5 and oil cylinder bonnet 2, and big piston 6 is by being tightly connected between black box 7 and cylinder body 4, the fixed piston bar 1.
Specific implementation method: when demand thrust during less than the pressure of sequence valve 14, high pressure oil is pressed into fixed piston bar 1 from working connection 10, moving piston rod 3 advances fast, passes through in the closed chamber 15 that forms between big piston 6, fixed piston bar 1 and cylinder body 4 from oil sucting valve 13 oil suction in the fuel tank 9.When demand thrust reached the pressure of sequence valve 14, sequence valve 14 was opened, and high pressure oil is pressed in the closed chamber 15 that forms between big piston 6, fixed piston bar 1 and the cylinder body 4 simultaneously, promotes big piston 6, has increased lifting surface area, had increased the thrust that advances.
Claims (5)
1. double speed oil cylinder, it mainly comprises cylinder body, the oil cylinder protecgulum, the oil cylinder bonnet, big piston, fixed piston bar and moving piston rod, cylinder body one end is by the sealing of oil cylinder bonnet, the cylinder body the other end forms seal space by oil cylinder protecgulum and moving piston rod, big piston is arranged on an end of moving piston rod, it is characterized in that moving piston rod is a hollow structure, in moving piston rod, the fixed piston bar is set, the fixed piston bar is that hollow structure and two ends communicate, fixed piston bar one end is connected with the oil cylinder bonnet, the moving end of piston rod in cylinder body be by big piston and fixed piston bar closed front, and big piston is slidingly connected on the fixed piston bar, in the cylinder body outer installment fuel tank arranged.
2. double speed oil cylinder according to claim 1, it is characterized in that on the oil cylinder bonnet, being provided with oil distributing valve, oil distributing valve comprises working connection, working connection directly is communicated with the fixed piston bar, and be communicated with big piston, cylinder body and the formed closed chamber of fixed piston bar by sequence valve, closed chamber is provided with from oil sucting valve with from outlet valve, all directly is communicated with fuel tank from oil sucting valve with from outlet valve.
3. double speed oil cylinder according to claim 1 and 2 is characterized in that the fixed piston bar is tightly connected by first quarter moon baffle ring and oil cylinder bonnet, and big piston is by being tightly connected between black box and cylinder body, the fixed piston bar.
4. double speed oil cylinder according to claim 1 and 2 is characterized in that the fuel tank parcel is arranged on outside the cylinder body.
5. double speed oil cylinder according to claim 3 is characterized in that the fuel tank parcel is arranged on outside the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201393419U CN202073869U (en) | 2011-05-05 | 2011-05-05 | Dual-speed oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201393419U CN202073869U (en) | 2011-05-05 | 2011-05-05 | Dual-speed oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073869U true CN202073869U (en) | 2011-12-14 |
Family
ID=45111973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201393419U Expired - Lifetime CN202073869U (en) | 2011-05-05 | 2011-05-05 | Dual-speed oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182720A (en) * | 2011-05-05 | 2011-09-14 | 嘉善雪帕尔工具有限公司 | Double-speed oil cylinder |
| CN102562713A (en) * | 2012-01-29 | 2012-07-11 | 嘉善雪帕尔工具有限公司 | Quick cylinder |
-
2011
- 2011-05-05 CN CN2011201393419U patent/CN202073869U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182720A (en) * | 2011-05-05 | 2011-09-14 | 嘉善雪帕尔工具有限公司 | Double-speed oil cylinder |
| CN102562713A (en) * | 2012-01-29 | 2012-07-11 | 嘉善雪帕尔工具有限公司 | Quick cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |