CN2594244Y - Front locking tension jack - Google Patents
Front locking tension jack Download PDFInfo
- Publication number
- CN2594244Y CN2594244Y CN 02295705 CN02295705U CN2594244Y CN 2594244 Y CN2594244 Y CN 2594244Y CN 02295705 CN02295705 CN 02295705 CN 02295705 U CN02295705 U CN 02295705U CN 2594244 Y CN2594244 Y CN 2594244Y
- Authority
- CN
- China
- Prior art keywords
- cup
- support sleeve
- grapnel
- sleeve
- intermediate plate
- 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 - Fee Related
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Abstract
The utility model relates to a front clamping type tension jack, which comprises an oil cylinder 1, penetrated sleeves 2, a piston 3, a connecting sleeve 4, an anchor cup 7 and tool clamping pieces 8, wherein, the penetrated sleeves 2 are sheathed in the oil cylinder in turn; the connecting sleeve 4 is connected with the piston 3 through screw threads; the anchor cup 7 is connected with the connecting sleeve; the tool clamping pieces 8 are installed in the anchor cup 7 in turn. A guide sleeve 6 with a spring 5 withstands the big end of the tool clamping pieces, and a jacking sleeve 9 withstands the small end of the tool clamping pieces; a retrograded anchor device which is composed of a small anchor cup 11 and a small clamping piece 12 which is installed in the small anchor cup, a guide jacking sleeve 13 and a big spring 14 are arranged in a supporting sleeve 10, wherein, the jacking sleeve is connected with the small anchor cup through the screw threads or bolts, a small spring is arranged in the end face in the jacking sleeve, and the small spring withstands the big end of the small clamping piece 12; the big spring is sheathed on the guide jacking sleeve and withstands the end face of the small anchor cup which is the end of the small clamping piece, and spacings between the guide jacking sleeve and the small anchor cup are 2MM to 5MM; the supporting sleeve 10 is an integral body or an integral body which is connected by two sections. The jack can enable the service life of the tool clamping pieces to prolong, and can improve the reliability and the durability of the jack.
Description
One, technical field:
The utility model relates to a kind of jack, especially for the preceding cassette stretch-draw jack of stretch-draw.
Two, background technology:
Cassette stretch-draw jack structure as shown in Figure 4 before existing: mainly by oil cylinder 1, be enclosed within in-oil cylinder punching cover 2 successively, piston 3, the adapter sleeve 4 that links to each other with piston 3, spring 5, orienting sleeve 6, anchor cup 7, instrument intermediate plate 8, support sleeve 10, top pine cover 9 is formed, this structure jack is when stretch-draw, intermediate plate clamping steel strand, piston 3 is motionless, by oil cylinder 1, punching cover 2, adapter sleeve 4, anchor cup 7, the stretch-draw work system that instrument intermediate plate 8 is formed is to left movement, after arriving specified stretching force, jack begins backhaul, because this moment, intermediate plate and steel strand were interlocking pattern, so the stretch-draw work system is motionless, piston bounces back left after top pine cover 9 backs down intermediate plate, and jack loosens steel strand to be withdrawed from.The anchor that moves back of this structure jack is to promote the intermediate plate front end by force by top pine cover, thereby make intermediate plate break away from the anchor cup and unclamp steel strand, the thrust of top pine cover is except that the friction force that will overcome between instrument intermediate plate and the anchor cup, to overcome the instrument intermediate plate especially and be separated from the resistance that is produced from the interlock steel strand, this resistance is very big, cause damage for easily the instrument intermediate plate, greatly reduce the service life of instrument intermediate plate, and have influence on reliability height, the durability of jack.
Three, utility model content:
Technical problem to be solved in the utility model is: the anchor that moves back that solves the existing structure jack causes damage for easily the instrument intermediate plate, greatly reduces the problem in the service life of instrument intermediate plate, provide a kind of have special move back the windlass structure, the instrument intermediate plate life-span is prolonged greatly, the reliability height of jack, the preceding cassette stretch-draw jack that durability is good.
Its concrete technical scheme is: cassette stretch-draw jack before a kind of, comprise oil cylinder, be enclosed within in-oil cylinder punching cover successively, piston, with the adapter sleeve of piston by being threaded, the anchor cup that links to each other with adapter sleeve, be contained in the instrument intermediate plate in the anchor cup successively, the orienting sleeve of band spring withstands the big end of instrument intermediate plate, top pine cover withstands instrument intermediate plate small end, it is characterized in that: in support sleeve, also have by the grapnel cup, be contained in the little intermediate plate in the grapnel cup, guiding top pine cover, the anchor restorer that big spring is formed, top pine cover is connected with the grapnel cup by screw thread or bolt, in the pine cover inner end surface of top a little spring is arranged, this little spring withstands the big end of little intermediate plate, big spring is enclosed within guiding top pine and puts, and withstand the end face of the grapnel cup of clip sheet place end, the spacing that 2～5mm is arranged between guiding top pine cover and the grapnel cup, described support sleeve or integral body or by the two sections integral body that are linked to be in support sleeve top and support sleeve bottom.
From following working process (referring to Fig. 1, Fig. 2) as can be seen,, the utlity model has following beneficial effect owing to adopt said structure:
The stretching process of cassette stretch-draw jack is the same with existing jack before the utility model, the stretch-draw work system clamping steel strand of being made up of oil cylinder 1, punching cover 2, adapter sleeve 4, anchor cup 7, instrument intermediate plate 8 are to left movement, after arriving specified stretching force, jack begins to put to be opened, still by anchor cup 7, instrument intermediate plate 8 clamping steel strand; When the jack backhaul, the stretch-draw work system can not be moved owing to the clamping steel strand, this moment is by piston 3, grapnel cup 11, the anchor system of moving back that clip sheet 12 is formed begins the clamping steel strand, and the trend of oriented left movement, because the effect of big spring 14, this moves back the anchor system and can not bounce back, the elastic force of big spring 14 generations this moment moves the loose cover 13 in collision guiding top after stoping grapnel cup 11, force stretch-draw work system steel strand to do the relative motion opposite with the steel strand retraction direction, the power that produces when steel strand retractions is enough greatly the time, cause the instrument intermediate plate from the anchor cup, to spin off, the stretch-draw work system begins to moving back the motion of anchor system direction, behind anchor cup 7 top pine covers 9, top pine cover 9 promotes grapnel cup 11 compression big springs 14, make guiding top pine cover 13 roof pressure clip sheets 12, after guiding top pine cover 13 backed down clip sheet 12, jack loosens steel strand to be withdrawed from.This structure makes that the instrument intermediate plate 8 play a major role at work no longer is to rely on powerfully to overcome the resistance that intermediate plate interlock steel strand are produced and move back anchor; therefore the tooth of instrument intermediate plate has obtained the actv. protection; and it is very little to back down the required power of clip sheet 12 at last; tooth to little intermediate plate can not cause damage, and has prolonged the life-span of instrument intermediate plate and the reliability of jack is greatly improved.
Below in conjunction with drawings and Examples, the architectural feature of cassette stretch-draw jack before the utility model is further described:
Four, description of drawings:
Fig. 1: cassette stretch-draw jack structure scheme drawing before the utility model;
Fig. 2: embodiment two described preceding cassette stretch-draw jack structure scheme drawings;
The P portion partial enlarged drawing of Fig. 3: Fig. 2;
Fig. 4: existing preceding cassette stretch-draw jack structure scheme drawing of the same type.
Five: the specific embodiment:
Embodiment one:
Cassette stretch-draw jack before a kind of, comprise oil cylinder 1, be enclosed within in-oil cylinder punching cover 2 successively, piston 3, with the adapter sleeve 4 of piston 3 by being threaded, the anchor cup 7 that links to each other with adapter sleeve, be contained in the instrument intermediate plate 8 in the anchor cup 7 successively, the orienting sleeve 6 of band spring 5 withstands instrument intermediate plate 8 and holds greatly, top pine cover 9 withstands instrument intermediate plate 8 small ends, in support sleeve 10, also have by grapnel cup 11, be contained in the clip sheet 12 in the grapnel cup 11, guiding top pine cover 13, the anchor restorer that big spring 14 is formed, top pine cover 9 is connected with the grapnel cup by bolt, between top pine cover 9 and the support sleeve 10 stop nut 17 is arranged, in pine cover 9 inner end surfaces of top a little spring 16 is arranged, this little spring 16 withstands clip sheet 12 and holds greatly, big spring 14 is enclosed within on the guiding top pine cover 13, and withstand the end face of the grapnel cup 11 of clip sheet 12 place ends, the spacing of 2～5mm is arranged (referring to Fig. 1 between guiding top pine cover 13 and the grapnel cup 11, Fig. 3).
Embodiment two:
Cassette stretch-draw jack before a kind of, comprise oil cylinder 1, be enclosed within in-oil cylinder punching cover 2 successively, piston 3, with the adapter sleeve 4 of piston 3 by being threaded, the anchor cup 7 that links to each other with adapter sleeve, be contained in the instrument intermediate plate 8 in the anchor cup 7 successively, the orienting sleeve 6 of band spring 5 withstands instrument intermediate plate 8 and holds greatly, top pine cover 9 withstands instrument intermediate plate 8 small ends, in support sleeve 10, also have by grapnel cup 11, be contained in the clip sheet 12 in the grapnel cup 11, guiding top pine cover 13, the anchor restorer that big spring 14 is formed, in the described grapnel cup 11 step is arranged, top pine cover 9 places on this step, its cylindrical and grapnel cup are by being threaded, in pine cover 9 inner end surfaces of top a little spring 16 is arranged, this little spring 16 withstands clip sheet 12 and holds greatly, big spring 14 is enclosed within on the guiding top pine cover 13, and withstand the end face of the grapnel cup 11 of clip sheet 12 place ends, the spacing of 2～5mm is arranged between guiding top pine cover 13 and the grapnel cup 11, and support sleeve 10 is by support sleeve top 10
2With support sleeve bottom 10
.1Two sections integral body that are linked to be, support sleeve top 10
2With support sleeve bottom 10
.1Be integral (referring to Fig. 2, Fig. 3) by being threaded.Adopt this kind structure, the one, convenient for assembly, the 2nd, can be convenient for changing little intermediate plate.
Claims (3)
1, cassette stretch-draw jack before a kind of, comprise oil cylinder (1), be enclosed within in-oil cylinder punching cover (2) successively, piston (3), with the adapter sleeve (4) of piston (3) by being threaded, the anchor cup (7) that links to each other with adapter sleeve (4), be contained in the instrument intermediate plate (8) in the anchor cup (7) successively, the orienting sleeve (6) of band spring (5) withstands the big end of instrument intermediate plate (8), top pine cover (9) withstands instrument intermediate plate (8) small end, it is characterized in that: in support sleeve (10), also have by grapnel cup (11), be contained in the little intermediate plate (12) in the grapnel cup (11), guiding top pine cover (13), the anchor restorer that big spring (14) is formed, top pine cover (9) is connected with grapnel cup (11) by screw thread or bolt, in pine cover (9) inner end surface of top a little spring (16) is arranged, this spring withstands the big end of little intermediate plate (12), big spring (14) is enclosed within on the guiding top pine cover (13), and withstand the end face of the grapnel cup (11) of clip sheet place end, the spacing that 2～5mm is arranged between guiding top pine cover (13) and the grapnel cup (11), described support sleeve (10) or integral body or by support sleeve top (10
2) and support sleeve bottom (10
.1) two sections integral body that are linked to be.
2, preceding cassette stretch-draw jack as claimed in claim 1, it is characterized in that: described support sleeve (10) is an integral body, top pine cover (9) is connected with the grapnel cup by bolt, between loose cover in top (9) and the support sleeve (10) stop nut (17) is arranged.
3, preceding cassette stretch-draw jack as claimed in claim 1, it is characterized in that: in the described grapnel cup (11) step is arranged, top pine cover (9) places on this step, its cylindrical and grapnel cup (11) be by being threaded, and described support sleeve (10) is by support sleeve top (10
2) and support sleeve bottom (10
.1) two sections integral body that are linked to be, support sleeve top (10
2) and support sleeve bottom (10
.1) be integral by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295705 CN2594244Y (en) | 2002-12-29 | 2002-12-29 | Front locking tension jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295705 CN2594244Y (en) | 2002-12-29 | 2002-12-29 | Front locking tension jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594244Y true CN2594244Y (en) | 2003-12-24 |
Family
ID=33752592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02295705 Expired - Fee Related CN2594244Y (en) | 2002-12-29 | 2002-12-29 | Front locking tension jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594244Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224204A (en) * | 2013-05-13 | 2013-07-31 | 蔡青林 | Lifting jack for tensioning equipment |
| CN111058380A (en) * | 2019-10-11 | 2020-04-24 | 广西科技大学 | Intelligent hanging basket system |
| CN113279794A (en) * | 2021-06-28 | 2021-08-20 | 河南永华能源有限公司 | Anchor cable retreating device |
-
2002
- 2002-12-29 CN CN 02295705 patent/CN2594244Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224204A (en) * | 2013-05-13 | 2013-07-31 | 蔡青林 | Lifting jack for tensioning equipment |
| CN111058380A (en) * | 2019-10-11 | 2020-04-24 | 广西科技大学 | Intelligent hanging basket system |
| CN113279794A (en) * | 2021-06-28 | 2021-08-20 | 河南永华能源有限公司 | Anchor cable retreating device |
| CN113279794B (en) * | 2021-06-28 | 2023-09-12 | 河南永华能源有限公司 | Anchor rope moves back anchor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031224 Termination date: 20100129 |