CN202914437U - Self-restoring single-action hydraulic cylinder - Google Patents
Self-restoring single-action hydraulic cylinder Download PDFInfo
- Publication number
- CN202914437U CN202914437U CN 201220604740 CN201220604740U CN202914437U CN 202914437 U CN202914437 U CN 202914437U CN 201220604740 CN201220604740 CN 201220604740 CN 201220604740 U CN201220604740 U CN 201220604740U CN 202914437 U CN202914437 U CN 202914437U
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- cylinder
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- cylinder body
- hydraulic cylinder
- piston rod
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Abstract
The utility model relates to a self-restoring single-action hydraulic cylinder which comprises a cylinder bottom, a cylinder body, a piston, a piston rod and a cylinder cover, wherein the cylinder bottom is welded at one end of the cylinder body, the cylinder cover is installed at the other end of the cylinder body, the piston is arranged in the cylinder body, one end of the piston rod stretches into the cylinder body through the cylinder cover to be connected with the piston, an oil chamber is formed in the cylinder body and between the piston and the cylinder bottom, and an oil port is formed in the cylinder bottom and is communicated with the oil chamber. The self-restoring single-action hydraulic cylinder is characterized by further comprising a spring and a draw bar, a fixed piece is arranged on the inner bottom face of the cylinder body, a central hole is formed in the piston rod and corresponds to the fixed piece, the draw bar is installed on the bottom of the central hole, one end of the spring is connected with the fixed piece, and the other end of the spring is connected with the draw bar. The self-restoring single-action hydraulic cylinder has the advantages of being capable of restoring fast and reliably.
Description
Technical field
The utility model relates to a kind of single-acting formula oil hydraulic cylinder, relates in particular to a kind of Self-resetting single-acting formula oil hydraulic cylinder.
Background technique
Oil hydraulic cylinder is the executive component in the hydraulic system, and it is converted to straight-line mechanical energy with hydraulic energy.If the motion of oil hydraulic cylinder both direction all relies on hydraulic oil to realize, such oil hydraulic cylinder is called double-acting hydraulic cylinder, if the motion of the some directions of oil hydraulic cylinder is to rely on deadweight or external force to realize, this class oil hydraulic cylinder is known as single-acting formula oil hydraulic cylinder.Present single-acting formula oil hydraulic cylinder comprises cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is installed in the cylinder body the other end, piston is arranged in the cylinder body, piston rod one end stretches in the cylinder body by cylinder cap and is connected with piston, in cylinder body, form an oil pocket between piston and the cylinder bottom, be provided with an oil transportation hole at cylinder bottom and be communicated with oil pocket; Single-acting formula oil hydraulic cylinder uses in lifting equipment usually.In equipment lifting when work,, lifting hydraulic cylinder relies on the thrust that input hydraulic pressure oil is produced in the oil pocket that goods is given rise to certain height; Behind the removal goods, stop to oil hydraulic cylinder for pressure oil, in the hydraulic cylinder piston rod dependence deadweight withdrawal oil hydraulic cylinder.Because have certain frictional force during the hydraulic cylinder piston rod retraction, so piston rod can not quickly and reliably be retracted.For this reason, the common way of people is to increase counterweight at piston rod, relies on the weight of counterweight to come overcome friction, and the realization piston rod is quickly and reliably retracted.The mode of this counterweight although also can deal with problems, owing to having increased the weight of equipment, has power loss during lifting, virtually increased the cost of equipment.
Summary of the invention
For above-mentioned shortcoming, the purpose of this utility model be to provide a kind of energy fast, the Self-resetting single-acting formula oil hydraulic cylinder of reliable reset.
Technology contents of the present utility model is, a kind of Self-resetting single-acting formula oil hydraulic cylinder, comprise cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is installed in the cylinder body the other end, and piston is arranged in the cylinder body, and piston rod one end stretches in the cylinder body by cylinder cap and is connected with piston, in cylinder body, form an oil pocket between piston and the cylinder bottom, be provided with an oil transportation hole at cylinder bottom and be communicated with oil pocket; It is characterized in that it also comprises spring and pull bar, be provided with a fixed block at the cylinder bottom inner bottom surface, corresponding fixed block is provided with a center hole at piston rod, and pull bar is installed in the center hole bottom, and spring one end is connected with fixed block, and the spring the other end is connected with pull bar.
Rely on the pulling force automatic drawing back piston rod of spring, its piston rod resets flexibly, reliably, the problem of having avoided the conventional reset mode to exist.
The advantage that the utility model compared with prior art has is:
(1), produce enough pulling force when the utility model relies on spring to be stretched, this pulling force can guarantee there be not the auxiliary lower of other external force, the piston rod of oil hydraulic cylinder can quickly and reliably be retracted in the oil hydraulic cylinder;
(2), spring is installed among the hollow piston rod, from can't see in appearance of oil hydraulic cylinder.Compare with the oil hydraulic cylinder of external spring, the oil hydraulic cylinder profile that seems is simpler, attractive in appearance.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of Self-resetting single-acting formula oil hydraulic cylinder, comprise cylinder bottom 1, cylinder body 2, piston 3, piston rod 4 and cylinder cap 5, cylinder bottom 1 is welded on cylinder body 2 one ends, cylinder cap 5 is installed in cylinder body 2 the other ends, and piston 3 is arranged in the cylinder body 2, and piston rod 4 one ends stretch in the cylinder body 2 by cylinder cap 5 and are connected with piston 3, in cylinder body 2, form an oil pocket 2.1 between piston 3 and the cylinder bottom 1, be provided with an oil transportation hole 1.1 at cylinder bottom 1 and be communicated with oil pocket 2.1; It is characterized in that it also comprises spring 6 and pull bar 7, be provided with a fixed block 1.2 at cylinder bottom 1 inner bottom surface, corresponding fixed block 1.2 is provided with a center hole 4.1 at piston rod 4, pull bar 7 is installed in center hole 4.1 bottoms by card key 8, spring 6 one ends are connected with fixed block 1.2, and spring 6 the other ends are connected with pull bar 7.
Claims (1)
1. Self-resetting single-acting formula oil hydraulic cylinder, comprise cylinder bottom, cylinder body, piston, piston rod and cylinder cap, cylinder bottom is welded on cylinder body one end, cylinder cap is installed in the cylinder body the other end, piston is arranged in the cylinder body, piston rod one end stretches in the cylinder body by cylinder cap and is connected with piston, forms an oil pocket in cylinder body between piston and the cylinder bottom, is provided with an oil transportation hole at cylinder bottom and is communicated with oil pocket; It is characterized in that it also comprises spring and pull bar, be provided with a fixed block at the cylinder bottom inner bottom surface, corresponding fixed block is provided with a center hole at piston rod, and pull bar is installed in the center hole bottom, and spring one end is connected with fixed block, and the spring the other end is connected with pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604740 CN202914437U (en) | 2012-11-16 | 2012-11-16 | Self-restoring single-action hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604740 CN202914437U (en) | 2012-11-16 | 2012-11-16 | Self-restoring single-action hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914437U true CN202914437U (en) | 2013-05-01 |
Family
ID=48162756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604740 Expired - Lifetime CN202914437U (en) | 2012-11-16 | 2012-11-16 | Self-restoring single-action hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889267A (en) * | 2012-11-16 | 2013-01-23 | 江阴市洪腾机械有限公司 | Self-restoration single-action type hydraulic cylinder |
-
2012
- 2012-11-16 CN CN 201220604740 patent/CN202914437U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889267A (en) * | 2012-11-16 | 2013-01-23 | 江阴市洪腾机械有限公司 | Self-restoration single-action type hydraulic 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: 20130501 |