CN202808259U - Jack and push rod self-locking lengthening apparatus assembly - Google Patents
Jack and push rod self-locking lengthening apparatus assembly Download PDFInfo
- Publication number
- CN202808259U CN202808259U CN 201220435385 CN201220435385U CN202808259U CN 202808259 U CN202808259 U CN 202808259U CN 201220435385 CN201220435385 CN 201220435385 CN 201220435385 U CN201220435385 U CN 201220435385U CN 202808259 U CN202808259 U CN 202808259U
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- push rod
- jack
- support
- block
- self
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Abstract
A jack and push rod self-locking lengthening apparatus assembly comprises a rack, a jack disposed in the center of a bottom part of the rack, and a push rod which can be lengthened; and further comprises a self-locking apparatus which comprises a support block, a support holder, a support removing ring and a support removing shift fork, wherein the support holder is ring-shaped, disposed on a supporting surface of the rack and concentric with a hole on the supporting surface, the support block is disposed above an inner side of the ring of the support holder, the support removing ring is disposed at an inner side of the support holder, the push rod which can be lengthened penetrates through the center of the support removing ring and is provided with hoop-shaped protrusions for free ends of the support block to jack against, and the support removing shift fork is connected with a middle part of the support removing ring. According to the jack and push rod self-locking lengthening apparatus assembly, the support block can be used to lock the push rod which can be lengthened, and thus the whole weight of a heavy object can be supported by the support block after the object is jacked up, thereby preventing the jack from being stressed for a long time and ensuring safety; and larger jacking distances can be realized because the push rod can be lengthened.
Description
Technical field
The utility model relates to a kind of Lifting Equipment, relates in particular to a kind of jack and push rod self-locking length extension device fabricate block.
Background technology
Jack is a kind of weight-lifting equipment of jacking weight.Two kinds of mechanical type and fluid pressure types are arranged usually, and mechanical jack has again rack-and-pinion and spiral two kinds.Uncommon Pneumatic jack is also arranged in addition.Existing all jacks generally have the little and slow-footed shortcoming of jacking stroke, all can not satisfy simultaneously the large stroke of large-tonnage and fireballing requirement.
The patent No. is that the utility model patent of ZL201120278106.X discloses a kind of Pneumatic jack that the large stroke of large-tonnage requires that satisfies, although disclosed technology can realize large stroke and large-tonnage requirement in this patent, but still there are two major defects, the one, the long period is kept jack-up weight state, this technical requirements to jack is very high, and there is potential safety hazard, the 2nd, the height of jacking is subject to the restriction of jack stroke, height that can not unconfined expansion jacking, because it is higher to the manufacturing technology requirement of jack to improve the stroke of jack, the jacking stroke is unsuitable too high, and the general layer 2-4 of guide cylinder is advisable with one heart.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of prior art defective that overcomes, safe and reliable jack and push rod self-locking length extension device fabricate block.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of jack and push rod self-locking length extension device fabricate block, comprise frame, jack and can lengthen push rod, jack places the frame bottom centre position, the bearing surface center of frame has hole, it is characterized in that, also comprise self-locking device, this self-locking device comprises back-up block, supporting bracket, remove support ring and remove to support shift fork, supporting bracket in the form of a ring, be arranged on the frame support face and concentric with the hole on the bearing surface, support filler ring inside front is provided with groove, is provided with in the groove can be used for supporting the back-up block that can lengthen push rod, goes support ring to be arranged at the inboard of supporting bracket, can lengthen push rod by going to the support ring center to insert, can lengthen and be provided with the hoop shape projection that the back-up block free end is withstood on the push rod, go to the support ring middle part to be connected with and support shift fork, remove to support shift fork support ring is moved up and down, when going support ring to move up, can push back-up block open.
Further, the groove of described support filler ring inside front setting top also is provided with gland, and back-up block is positioned at the space of gland and supporting bracket formation.
Further, also comprise sliding sleeve and strut bar, sliding sleeve is combined by two semicircular cylinders, when the weight jacking behind certain altitude, be enclosed within on the lengthened push rod of weight below, the sliding sleeve outside connects some strut bars, and strut bar one end is connected to the sliding sleeve outside, and the other end is fixed on ground or other fixtures.
Further, when jack-up was very high, described sliding sleeve can be along lengthening a plurality of that push rod distributes up and down, and the quantity of the strut bar that the outside of each sliding sleeve connects is the 3-4 root.
Further, 3-4 strut bar of described each sliding sleeve outside connection evenly distributes.
Further, insert in the hole of frame bearing surface center the described lower end of support ring of going.
Further, described jack is Pneumatic jack or hydraulic jack.
The utility model compared with prior art, has following beneficial effect: owing to can lengthen the push rod locking with back-up block, so the weight that can realize the weight after the jack-up is all supported by back-up block, back-up block passes to supporting bracket and frame successively with gravity again, so just avoided jack stressed for a long time, guaranteed safety, can lengthen push rod simultaneously can lengthen, and can realize the jacking distance larger than prior art.
Description of drawings
Fig. 1 is the utility model jack and the scheme drawing of push rod self-locking length extension device fabricate block when Pneumatic jack unaerated state.
Fig. 2 is the utility model jack and the scheme drawing of push rod self-locking length extension device fabricate block when the Pneumatic jack inflated condition.
Fig. 3 is the scheme drawing that the utility model jack and the increase of push rod self-locking length extension device fabricate block can lengthen push rod.
Fig. 4 is the utility model jack and push rod self-locking length extension device fabricate block secondary jacking scheme drawing.
Fig. 5 is for lengthening the axial cutaway view of push rod.
Fig. 6 is for lengthening the radial cross-section of push rod.
Fig. 7 is the axial cutaway view of back-up block.
Fig. 8 is the birds-eye view of back-up block.
1-frame, 2-Pneumatic jack, 31-supporting bracket, 32-back-up block, 33-go support ring, 34-go to support shift fork, 35-gland, 4-can lengthen push rod, 41-hoop shape projection, 42-socket, 43-bellmouth, 44-strengthening rib, 5-weight, 6-sliding sleeve, 7-strut bar
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1-Fig. 4, jacking process scheme drawing when Fig. 1-Fig. 4 is the utility model use, such as Fig. 1-shown in Figure 4, jack of the present utility model and push rod self-locking length extension device fabricate block, comprise frame 1, Pneumatic jack 2 and can lengthen push rod 4, Pneumatic jack 2 places frame 1 bottom centre position, the bearing surface center of frame 1 has hole, it is characterized in that, also comprise self-locking device, this self-locking device comprises back-up block 32, supporting bracket 31, remove support ring 33 and remove to support shift fork 34, supporting bracket 31 in the form of a ring, be arranged on frame 1 bearing surface and concentric with the hole on the bearing surface, supporting bracket 31 ring inside fronts are provided with groove, be provided with in the groove and can be used for supporting the back-up block 32 that can lengthen push rod 4, go support ring 33 to be arranged at the inboard of supporting bracket 31, go to the lower end of support ring 33 to insert in the hole of frame 1 bearing surface center, can lengthen push rod 4 by going to support ring 33 centers to insert, can lengthen and be provided with the hoop shape projection 41 that back-up block 32 free ends are withstood on the push rod 4, go to support ring 33 middle parts to be connected with and support shift fork 34, removing to support shift fork 34 can make support ring 33 move up and down, when going support ring 33 to move up, can push back-up block 32 open, the groove top of described supporting bracket 31 ring inside front settings also is provided with gland 35, and back-up block 32 is positioned at the space of gland 35 and supporting bracket 31 formation.Also comprise sliding sleeve 6 and strut bar 7, sliding sleeve 6 is combined by two semicircular cylinders, when weight 5 jackings behind certain altitude, be enclosed within on the lengthened push rod 4 of weight 5 belows, sliding sleeve 6 outsides connect some strut bars 7, strut bar 7 one ends are connected to sliding sleeve 6 outsides, and the other end is fixed on ground or other fixtures.
Sliding sleeve 6 in the present embodiment can be one, also can be along lengthening a plurality of that push rod 4 distributes up and down, the quantity of the strut bar 7 that the outside of sliding sleeve 6 connects can be selected according to concrete needs, but for easy to use, satisfy simultaneously the stability requirement of whole Pneumatic jack and push rod self-locking length extension device fabricate block, be advisable for operated by rotary motion 3-4, simultaneously, when strut bar 7 is set, the strut bar 7 with sliding sleeve 6 outsides that can try one's best is evenly distributed on sliding sleeve 6 outsides, so more be conducive to stablize, if but be subject to the restriction of external condition, strut bar also can be set to non-uniform Distribution according to actual conditions.
Fig. 5 is for lengthening the axial cutaway view of push rod 4, Fig. 6 is for lengthening the radial cross-section of push rod 4, as shown in Figure 5 and Figure 6, lengthened push rod in the present embodiment 4 is cylindric, one end is bellmouth 43, the other end is socket 42, can lengthen and be provided with the hoop shape projection 41 that back-up block 32 free ends are withstood on the push rod 4, this hoop shape projection 41 is equivalent to flange, along the cylindric excircle setting that lengthens push rod 4, simultaneously, can lengthen and also be provided with strengthening rib 44 on the push rod 4, this strengthening rib 44 is arranged on the outside that can lengthen push rod 4, axially arranges, and the quantity of this strengthening rib 44 is identical with back-up block 32 quantity and just in time in the slit between adjacent two back-up blocks 32.
Fig. 7 is the axial cutaway view of back-up block 32, and Fig. 8 is the birds-eye view of back-up block 32.As shown in Figure 7 and Figure 8, the back-up block 32 of present embodiment along the circumferential direction arranges, and can guarantee so the phenomenon of discontinuity can not occur to lengthening the equilibrium of push rod 4 jack-up.
In carrying out the jacking process, first with Pneumatic jack 2 venting, then between Pneumatic jack 2 and weight 5, put into and to lengthen push rod 4, Pneumatic jack 2 is inflated, continuous inflation along with Pneumatic jack 2, can lengthen push rod 4 by continuous jack-up, because back-up block 32 is subject to action of gravitation, the upper end of back-up block 32 is in and the state that can lengthen push rod 4 and contact always, when the hoop shape projection 41 that can lengthen push rod 4 contacts back-up block 32, back-up block 32 is open, and can lengthen push rod 4 and continue jacking, after hoop shape projection 41 is passed through back-up block 32, Pneumatic jack 2 can be exitted, back-up block 32 can lengthen push rod 4 and withstand by withstanding hoop shape projection 41, and it is not fallen, this section can lengthen push rod 4 and on rested on by the position of jack-up by jack-up weight 5.Pneumatic jack 2 venting is complete, recovers the unaerated state, inserts another section in one section space between the lengthened push rod 4 of Pneumatic jack 2 tops and former jack-up and can lengthen push rod 4, and make itself and top can lengthen push rod 4 to be connected.Jack-up and increase can lengthen push rod 4 one by one, and jacking is to suitable height, and sliding sleeves 6 are installed in 4 outsides of the lengthened push rod below weight as required, sliding sleeve 6 outside uniform installation strut bars 7, and strut bar 7 bottoms and ground rigidly fix.Pneumatic jack 2 is inflated again, carries out next time jack-up.So repeatedly insert and to lengthen push rod 4, carry out jack-up, until jack-up is to predetermined height.If jack-up is highly higher, many group sliding sleeves 6 and strut bar 7 can be installed as required.Weight is pushed up final height, in the not stressed situation of back-up block, moves and supports shift fork 34, go to support bad 33 upwards jack-up remove back-up block 32, then Pneumatic jack 2 venting can lengthen push rod 4 and fall, and are dropped on the fixed support device that presets before this by jack-up weight 5.After this can remove piecemeal and can lengthen push rod 4.
In sum, the utility model compared with prior art, has following beneficial effect: owing to can lengthen the push rod locking with back-up block, therefore can realize that the weight of weight is all supported by back-up block after the weight jack-up, back-up block passes to supporting bracket and frame successively with gravity again, has so just avoided jack stressed for a long time, has guaranteed safety, simultaneously can lengthen push rod can lengthen, and can realize the jacking distance larger than prior art.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a jack and push rod self-locking length extension device fabricate block, comprise frame, jack and can lengthen push rod, jack places the frame bottom centre position, the bearing surface center of frame has hole, it is characterized in that, also comprise self-locking device, this self-locking device comprises back-up block, supporting bracket, remove support ring and remove to support shift fork, supporting bracket in the form of a ring, be arranged on the frame support face and concentric with the hole on the bearing surface, support the filler ring inside front and be provided with groove, be provided with in the groove and can be used for supporting the back-up block that can lengthen push rod, go support ring to be arranged at the inboard of supporting bracket, can lengthen push rod by going to the support ring center to insert, can lengthen and be provided with the hoop shape projection that the back-up block free end is withstood on the push rod, go to the support ring middle part to be connected with and support shift fork, remove to support shift fork support ring is moved up and down, when going support ring to move up, can push back-up block open.
2. jack as claimed in claim 1 and push rod self-locking length extension device fabricate block is characterized in that, the groove top of described support filler ring inside front setting also is provided with gland, and back-up block is positioned at the space of gland and supporting bracket formation.
3. jack as claimed in claim 1 and push rod self-locking length extension device fabricate block, it is characterized in that, also comprise sliding sleeve and strut bar, sliding sleeve is combined by two semicircular cylinders, when the weight jacking behind certain altitude, be enclosed within on the lengthened push rod of weight below, the sliding sleeve outside connects some strut bars, strut bar one end is connected to the sliding sleeve outside, and the other end is fixed on ground or other fixtures.
4. jack as claimed in claim 3 and push rod self-locking length extension device fabricate block is characterized in that, described sliding sleeve can lengthen a plurality of that push rod distributes up and down for the edge, and the quantity of the strut bar that the outside of each sliding sleeve connects is the 3-4 root.
5. jack as claimed in claim 4 and push rod self-locking length extension device fabricate block is characterized in that, 3-4 the strut bar that described each sliding sleeve outside connects evenly distributes.
6. jack as claimed in claim 1 and push rod self-locking length extension device fabricate block is characterized in that, insert in the hole of frame bearing surface center the described lower end of support ring of going.
7. such as each described jack among the claim 1-6 and push rod self-locking length extension device fabricate block, it is characterized in that described jack is Pneumatic jack or hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220435385 CN202808259U (en) | 2012-08-29 | 2012-08-29 | Jack and push rod self-locking lengthening apparatus assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220435385 CN202808259U (en) | 2012-08-29 | 2012-08-29 | Jack and push rod self-locking lengthening apparatus assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202808259U true CN202808259U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220435385 Expired - Fee Related CN202808259U (en) | 2012-08-29 | 2012-08-29 | Jack and push rod self-locking lengthening apparatus assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202808259U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255721A (en) * | 2013-05-27 | 2013-08-21 | 张云祥 | High-level bridge construction method |
| CN104278639A (en) * | 2014-10-09 | 2015-01-14 | 中铁十局集团有限公司 | Girder falling jack external locking device |
| CN108978678A (en) * | 2018-09-04 | 2018-12-11 | 上海公路桥梁（集团）有限公司 | Capping type ratchet self-locking device and bracing members comprising it |
-
2012
- 2012-08-29 CN CN 201220435385 patent/CN202808259U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255721A (en) * | 2013-05-27 | 2013-08-21 | 张云祥 | High-level bridge construction method |
| CN104278639A (en) * | 2014-10-09 | 2015-01-14 | 中铁十局集团有限公司 | Girder falling jack external locking device |
| CN108978678A (en) * | 2018-09-04 | 2018-12-11 | 上海公路桥梁（集团）有限公司 | Capping type ratchet self-locking device and bracing members comprising it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |