CN103274330A - Double-acting jack with mechanical locking function - Google Patents
Double-acting jack with mechanical locking function Download PDFInfo
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- CN103274330A CN103274330A CN 201310135880 CN201310135880A CN103274330A CN 103274330 A CN103274330 A CN 103274330A CN 201310135880 CN201310135880 CN 201310135880 CN 201310135880 A CN201310135880 A CN 201310135880A CN 103274330 A CN103274330 A CN 103274330A
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- cylinder body
- ring
- piston rod
- piston
- backing ring
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Abstract
The invention discloses a double-acting jack with a mechanical locking function. The double-acting jack with the mechanical locking function comprises a cylinder body, a rear cover, a front cover, a piston, a piston rod, a backing ring and an adjusting ring, wherein the rear cover is fixedly arranged at the rear portion of the cylinder body, the front cover is fixedly arranged at the front portion of the cylinder body, a through hole is formed in the center of the cylinder body, the piston is arranged inside the cylinder body and can be driven to slide front and back inside the cylinder body, the piston rod is fixedly connected with the piston, the front end of the piston rod penetrates through the through hole of the front cover and extends to the exterior of the cylinder body, the backing ring is fixedly arranged at the front portion of the front cover, threads are formed on the outer circumferential face of the backing ring, and the adjusting ring is in screw joint above the backing ring in a matched mode. Mechanical locking with any stroke is achieved by the arrangement of the backing ring, the adjusting ring and split collars in a matched mode, force of the backing ring is jointly borne by the front cover and the cylinder body, integral bearing performance is improved, the mechanical locking with any stroke is achieved only by the requirements for increasing or decreasing adjustment on the backing ring relative to the adjusting ring matched with the split collars, an overlong backing ring is not required to be arranged, and material cost and machining cost are reduced. Meanwhile, influences on the piston rod are avoided, and the whole quality is improved.
Description
Technical field
The present invention relates to the engineering technical field of jacks, particularly relate to a kind of double acting jack with mechanical caging function.
Background technology
Hydraulic actuating cylinder is that jack is the power element in the hydraulic efficiency pressure system, and its function is can convert hydraulic pressure to mechanical energy.The input of hydraulic actuating cylinder is flow and the pressure of liquid, and output is space rate and power.The piston of hydraulic actuating cylinder can be finished linear reciprocating motion, exports limited straight-line displacement.
Press fuel feeding direction branch, can be divided into single-acting cylinder and double-acting cylinder.Single-acting cylinder just toward the side input high pressure oil of cylinder, makes the piston reverses direction backhaul by other external force.Double-acting cylinder then respectively to the both sides input pressure oil of cylinder, all finish by hydraulic coupling by forward and reverse motion of piston.
The engineering jack is widely used in railway, highway, bridge construction and gives in order to the large foundation concrete and to make and steel structure jacking engineering, for improving the locking performance, existing engineering both domestic and external top is lifted jack and is all had the safety locking nut, safety locking nut and piston rod disclose a kind of safe hydraulic pressure jack of being made of the rigid support mode parts such as height adjusting screw rod, insurance bung flange, screw-plunger, top cap, housing, piston/cylinder, manual pump assembly, bases by being threaded as Chinese patent 99126866.0.The insurance bung flange that will be located thereon the end after the screw-plunger rising puts in place is screwed downwards and top crown facial planes and tight, and the lock nut piston is upwards screwed the insurance bung flange to the screw-plunger upper end, namely unties the locking to screw-plunger.
But the lockout mechanism of said structure, piston rod and safety locking nut are by being threaded, and water and the grains of sand enter oil cylinder by the piston rod thread gap easily, cause the oil cylinder plucking, and piston can not push up to be lifted or backhaul, has shortened the life-span of jack greatly.
Summary of the invention
The objective of the invention is at the technological deficiency that exists in the prior art, and a kind of double acting jack with mechanical caging function is provided.
For realizing that the technical scheme that purpose of the present invention adopts is:
A kind of double acting jack with mechanical caging function, comprise cylinder body, be fixedly installed on the bonnet at cylinder body rear portion, be fixedly installed on cylinder body front portion and center and be provided with the protecgulum of through hole, be arranged on cylinder interior and can be driven in cylinder body before and after slide piston, captive joint with described piston and front end passes piston rod that the protecgulum through hole extends to the cylinder body outside, is fixedly installed on described protecgulum front portion and outer peripheral face forms threaded gasket ring, and be screwed onto the adjustment ring on the gasket ring matchingly.
Be fixedly connected with the top at described piston rod front end, described piston rod front end center is formed with spherical groove, and described top and piston rod contact surface are formed with spherical surface hill accordingly.
Described gasket ring is the tubular structure that two ends are formed with the rim of the mouth respectively, and described gasket ring rear end is set in the cylinder body front end, and front end rim of the mouth and the top of described gasket ring are complementary to allow its turnover.
At detachable at least one divided ring that is set with of described adjustment ring front end with unloading to realize the place's mechanical caging of big stroke.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is by arranging gasket ring and adjusting that cover is equipped with and divided ring is realized the mechanical caging of arbitrary distance of run, the power of gasket ring is born jointly by protecgulum and cylinder body, improve whole endurance, only need be equipped with the mechanical caging that the adjustment of adjusting the relative gasket ring of ring can realize arbitrary distance of run by the increase and decrease divided ring, do not need to arrange long gasket ring, reduce material and tooling cost, avoided the influence of piston rod simultaneously, improve total quality.
Description of drawings
Figure 1 shows that structural representation of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
As shown in Figure 1, double acting jack with mechanical caging function of the present invention, comprise cylinder body 1, be fixedly installed on the bonnet 2 at cylinder body rear portion, be fixedly installed on cylinder body front portion and center and be provided with the protecgulum 3 of through hole, be arranged on cylinder interior and can be driven in cylinder body before and after slide piston, captive joint with described piston and front end passes piston rod 5 that the protecgulum through hole extends to the cylinder body outside, is fixedly installed on described protecgulum front portion and outer peripheral face forms threaded gasket ring 6, and be screwed onto the adjustment ring 7 on the gasket ring matchingly.
Wherein, described cylinder body rear and front end is respectively arranged with oilhole so as to realizing the two-way control of piston advance and retreat, improves ease of use.Described cylinder body rear and front end is formed with preceding thread rim of the mouth and rear thread rim of the mouth respectively, described protecgulum is captiveed joint with cylinder body by screw thread respectively with bonnet, wherein, described bonnet comprises the rear fixed plate corresponding with the rear thread rim of the mouth and the back stabbing board corresponding with described cylinder body, described back stabbing board is used for inserting cylinder interior, and a little is set upright bonnet with guiding and fixes, and is formed with ring groove at described stabbing board simultaneously and seals with Glais ring to fixedly install the hole.
Be formed with the loop configuration of centre hole centered by the described protecgulum, described protecgulum comprises the preceding set collar corresponding with the preceding thread rim of the mouth and the preceding stabbing board corresponding with described cylinder body; Stabbing board be used for to insert cylinder interior a little is set upright protecgulum with guiding and fixes before described, is formed with ring groove at described stabbing board simultaneously and seals with Glais ring to fixedly install the hole.
Be fixedly connected with top 7 at described piston rod 5 front ends, described piston rod front end center is formed with spherical groove, and described top and piston rod contact surface are formed with spherical surface hill accordingly.Adopt the sphere contact structure that is nested, guarantee piston rod and top cooperate makes simultaneously it possess fixed automatically in effect, can effectively guarantee the oil cylinder traveling comfort.
Described gasket ring 6 is the tubular structure that two ends are formed with the rim of the mouth respectively, and described gasket ring rear end is set in the cylinder body front end, and front end rim of the mouth and the top of described gasket ring are complementary to allow its turnover.The rim of the mouth formula design at two ends makes the power of gasket ring be born jointly by protecgulum and cylinder body, improve whole endurance, the sheathed formula design of rear end and cylinder body simultaneously also guarantees fixed middle effect and is not offset, and piston rod does not stress during mechanical caging does not need piston rod is operated, and has improved the piston rod working stability.The rim of the mouth formula design of front end is simultaneously avoided the oil cylinder stroke influence is strengthened its applicability.
At detachable at least one divided ring 8 that is set with of described adjustment ring front end with unloading to realize the place's mechanical caging of big stroke, utilize the raising of detouchable divided ring to the comformability of different mechanical interlockings position, do not need to arrange long gasket ring, reduce material and tooling cost, only need be equipped with the mechanical caging that the adjustment of adjusting the relative gasket ring of ring can realize arbitrary distance of run by the increase and decrease divided ring.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. double acting jack with mechanical caging function, it is characterized in that, comprise cylinder body, be fixedly installed on the bonnet at cylinder body rear portion, be fixedly installed on cylinder body front portion and center and be provided with the protecgulum of through hole, be arranged on cylinder interior and can be driven in cylinder body before and after slide piston, captive joint with described piston and front end passes piston rod that the protecgulum through hole extends to the cylinder body outside, is fixedly installed on described protecgulum front portion and outer peripheral face forms threaded gasket ring, and be screwed onto the adjustment ring on the gasket ring matchingly.
2. the double acting jack with mechanical caging function as claimed in claim 1, it is characterized in that, be fixedly connected with the top at described piston rod front end, described piston rod front end center is formed with spherical groove, and described top and piston rod contact surface are formed with spherical surface hill accordingly.
3. the double acting jack with mechanical caging function as claimed in claim 2, it is characterized in that, described gasket ring is the tubular structure that two ends are formed with the rim of the mouth respectively, and described gasket ring rear end is set in the cylinder body front end, and front end rim of the mouth and the top of described gasket ring are complementary to allow its turnover.
4. as each described double acting jack with mechanical caging function of claim 1-3, it is characterized in that, at detachable at least one divided ring that is set with of described adjustment ring front end with unloading to realize the place's mechanical caging of big stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310135880 CN103274330A (en) | 2013-04-18 | 2013-04-18 | Double-acting jack with mechanical locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310135880 CN103274330A (en) | 2013-04-18 | 2013-04-18 | Double-acting jack with mechanical locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103274330A true CN103274330A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310135880 Pending CN103274330A (en) | 2013-04-18 | 2013-04-18 | Double-acting jack with mechanical locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103274330A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278639A (en) * | 2014-10-09 | 2015-01-14 | 中铁十局集团有限公司 | Girder falling jack external locking device |
| CN108862089A (en) * | 2018-07-25 | 2018-11-23 | 南京奥达升智能科技有限公司 | A kind of self-locking type hydraulic jack with two-way function |
-
2013
- 2013-04-18 CN CN 201310135880 patent/CN103274330A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278639A (en) * | 2014-10-09 | 2015-01-14 | 中铁十局集团有限公司 | Girder falling jack external locking device |
| CN108862089A (en) * | 2018-07-25 | 2018-11-23 | 南京奥达升智能科技有限公司 | A kind of self-locking type hydraulic jack with two-way function |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |