CN201495069U - Spiral jack - Google Patents
Spiral jack Download PDFInfo
- Publication number
- CN201495069U CN201495069U CN2009203036052U CN200920303605U CN201495069U CN 201495069 U CN201495069 U CN 201495069U CN 2009203036052 U CN2009203036052 U CN 2009203036052U CN 200920303605 U CN200920303605 U CN 200920303605U CN 201495069 U CN201495069 U CN 201495069U
- Authority
- CN
- China
- Prior art keywords
- bevel gear
- gear shaft
- ratchet
- cover
- based powder
- 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
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model relates to a hoisting tool, in particular to a spiral jack, which mainly solves the technical problems that all transverse holes of a jack body adopt lining rings made of copper alloy material and the center of a base plate is positioned by a single axial thrust ball bearing in the prior art, so the stability is poor; and the body cannot effectively reduce the production cost of products by adopting the traditional casting technology and the like. The spiral jack comprises a base plate which is connected with a body; the body is internally provided with a hoisting screw rod; a rod body of the hoisting screw rod is in threaded connection with a nut and a sleeve; the bottom of the hoisting screw rod is connected with a conical gear which is meshed with a bevel gear shaft arranged at the transverse hole of the body; an iron-based powder metallurgy bush is arranged between the bevel gear shaft and the inner wall of the transverse hole; and the bevel gear shaft is connected with a ratchet wheel. The body is provided with a dust cover which is connected with a handle; and a pawl which can be meshed with the ratchet wheel passes through and is arranged in the dust cover and connected with a pull head.
Description
Technical field
The utility model relates to a kind of lifting gear, especially relates to a kind of to the isostructural improvement of lifting screw.
Background technology
Lifting screw is applicable to that railway, car inspection and maintenance, mine, building engineering support and the usefulness of general weight decline.Because easy to carry, safeguard simple and easyly, safe and reliable, so be widely used in the strong hoisting operation of flowing power.Change axle as railway vehicle, steel beam structure is installed and is supported, the assembling of hull keel heavy-duty machinery, and automobile changes all available lifting screw of part lifting and reaches the lifting purpose safely and reliably.Chinese patent discloses a kind of lifting screw (Granted publication number: CN 2077862U), its structure is: at upper opening, in the tubular shell of bottom band base, leading screw axially is housed, a leading screw bottom cover one and a gear that is fastenedly connected in vain, be with on the leading screw on gear top and leading screw ingear lift nut parts, this parts top is equipped with the top platform, link by bearing between gear bottom and the base. face toward on the annulus position of gear teeth at tubular shell, have the thumb wheel hole, its outside be with one with the circular thumb wheel sheath body of shell bearing fit, pull out on the wheel sheath body and establish a pusher dog tube with respect to the position in thumb wheel hole, adorn one in the tube and be equipped with the pusher dog spring, can prolong gear radial expansion and pusher dog that can only unidirectional handsetting gear, on thumb wheel sheath body lateral wall, be provided with handle, removably handle bar is housed on the handle; The lift nut parts by with leading screw ingear nut be enclosed within that cover friction tight with it is simple on the nut forms, nut is in leading screw when the next, upper cartridge is suitable for reading concordant with housing, the cover letter top platform that is equipped with suitable for reading, overlap simple side-wall shaft to having sliding tray, the screw bear end that is fixed on the housing stretches in this groove, can only unidirectional handsetting gear the pusher dog front portion be a cylinder that can in pusher dog letter chamber, slide, the first side of the pusher dog of cylinder front portion is the plane with axially parallel.Opposite side is and the inclined-plane that axially is 40～70 degree angles; The pusher dog hole that the pusher dog head passes on the housing extend between the teeth of gear, cylindrical rear portion is the pusher dog bar, the pusher dog lid flush fit of its afterbody and pusher dog nozzle portion, the pusher dog spring is housed on the pusher dog bar, one on spring is stuck in the step place of pusher dog nozzle, the other end is stuck in the step place of cylinder and pusher dog bar boundary, the concrete structure of pusher dog lid is, 180 ° the symmetric position of being separated by on the contact surface of itself and pusher dog tube nozzle respectively has a protrusion, protrusion can be a barrel mast, shapes such as cuboid have shrinkage pool or the groove identical with the protrusion shape respectively on the opposite position with it on pusher dog tube nozzle plane.But the body cross-drilled hole of this jack has all adopted the lining ring of Cu alloy material, center chassis is single axial thrust ball bearing location, stability in use is very poor, circular cone umbrella shape axle, circular cone crowngear adopt present common metal milling and hobboing cutter cutting technology, and production efficiency is low, and it is extensive to have hindered enterprise, high efficiency production actual needs, body adopts the conventional cast technology, can't effectively reduce the production cost, small and exquisite, the light functions of use of performance product.
The utility model content
The utility model technical issues that need to address provide a kind of lifting screw, it mainly is the lining ring that the body cross-drilled hole that solves the existing in prior technology jack has all adopted Cu alloy material, center chassis is single axial thrust ball bearing location, stability in use is very poor, body adopts the conventional cast technology, can't effectively reduce the production cost, the technical matters of the functions of use that the performance product is small and exquisite, light etc.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
Lifting screw of the present utility model, comprise the chassis, be connected with body on the chassis, it is characterized in that being provided with lifting bolt in the described body, nut, sleeve have been threaded on the shaft of lifting bolt, the sleeve top is connected with top cover, the lifting bolt bottom is connected with conical gear by key pin, and conical gear is engaged with bevel gear shaft, and bevel gear shaft is installed in the cross-drilled hole place of body, be provided with the ferrous based powder metallurgical lining between bevel gear shaft and the cross-drilled hole inwall, be connected with ratchet on the bevel gear shaft; Body is provided with cover of dust, and cover of dust is connected with shakes the hand, in the cover of dust cross-under have can with the ratchet of ratchet engaged, ratchet is connected with pull head.Body has adopted current hydraulic pressure stamp forming technology, substitutes former foundry technique, has solved that cast body is easy to crack, condemnation factor is high, shaggy shortcoming.The profile of tooth of conical gear, bevel gear shaft adopts present precision casting process, substitutes former traditional cutting conical gear, bevel gear shaft.Adopt the ferrous based powder metallurgical lining to substitute copper alloy body cross-drilled hole lining commonly used, the ferrous based powder metallurgical lining can be graphite oilless sintered-metal bearing again, and intensity is stronger.Pull head has played the effect of power-transfer clutch, and when not working, the tooth of ratchet and ratchet are thrown off on the pull head, can't drive bevel gear shaft after the rotation of shaking the hand and rotate, and can only dally.During work, spur pull head downwards, the tooth interlock of the tooth of ratchet and ratchet, at this moment rotating shakes the hand can drive the bevel gear shaft rotation.
As preferably, described conical gear bottom is provided with the ferrous based powder metallurgical lining ring, and the cross-under of lifting bolt lower end increases stability in use in ferrous based powder metallurgical lining ring inside.
As preferably, be provided with bearing between described chassis and the ferrous based powder metallurgical lining ring, promptly can bear pressure, can make things convenient for conical gear to be rotated again.
As preferably, be connected with stage clip between described cover of dust and the ratchet.Stage clip can reset the pull head after the work.
Therefore, the utlity model has and adopted the ferrous based powder metallurgical lining, solve copper alloy and lost easily bond failure of oil back, improved the stability in use of jacking sleeve, lifting bolt, circular cone umbrella shape axle, circular cone crowngear, prolong product service life, advanced stamping technology actv. solution cast body is easy to crack, condemnation factor is high, shaggy shortcoming, also solve the casting thin-walled simultaneously and be difficult for the as cast defective workmanship, lowered enterprise's productive costs greatly, improved product market competitiveness, characteristics such as simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is construction profile scheme drawings of Fig. 1.
Parts, position and numbering among the figure: chassis 1, body 2, lifting bolt 3, nut 4, sleeve 5, top cover 6, key pin 7, conical gear 8, bevel gear shaft 9, ferrous based powder metallurgical lining 10, ratchet 11, cover of dust 12, shake the hand 13, ratchet 14, pull head 15, ferrous based powder metallurgical lining ring 16, bearing 17, stage clip 18.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the lifting screw that this is routine, as Fig. 1, Fig. 2, a chassis 1 is arranged, be connected with body 2 by screw on the chassis, have cross-drilled hole on the body, be equiped with ferrous based powder metallurgical lining 10 in the cross-drilled hole, the cross-under of ferrous based powder metallurgical bush inside has bevel gear shaft 9, and the bevel gear shaft outer end is connected with ratchet 11.Body 2 is provided with cover of dust 12, and cover of dust is connected with shakes the hand 13, in the cover of dust cross-under have can with the ratchet 14 of ratchet 11 interlocks, ratchet is connected with pull head 15.Be connected with stage clip 18 between cover of dust 12 and the ratchet 14.Bevel gear shaft 9 is engaged with conical gear 8, is provided with bearing 17 between conical gear and the chassis 1.Conical gear 8 inside are connected with lifting bolt 3 by key pin 7, are provided with ferrous based powder metallurgical lining ring 16 between lifting bolt and the bearing 16.Be threaded on the shaft of lifting bolt 3 nut 4, sleeve 5, the sleeve top is connected with top cover 6.
During use, with pulling moving pull head 15, with pull head bonded assembly ratchet 14 and ratchet 11 interlocks.Rotate then and shake the hand 13, shaking the hand can drive bevel gear shaft 9 and be rotated, thereby drives lifting bolts 3 rotations by conical gear 8, because lifting bolt itself can't lifting, therefore sleeve 5 upward movements that are threaded with it are finished jacking work.
Claims (4)
1. lifting screw, comprise chassis (1), be connected with body (2) on the chassis, it is characterized in that being provided with in the described body (2) lifting bolt (3), nut (4) has been threaded on the shaft of lifting bolt, sleeve (5), the sleeve top is connected with top cover (6), lifting bolt (3) bottom is connected with conical gear (8) by key pin (7), conical gear is engaged with bevel gear shaft (9), bevel gear shaft is installed in the cross-drilled hole place of body (2), be provided with ferrous based powder metallurgical lining (10) between bevel gear shaft (9) and the cross-drilled hole inwall, be connected with ratchet (11) on the bevel gear shaft (9); Body (2) is provided with cover of dust (12), and cover of dust is connected with shake the hand (13), in the cover of dust cross-under have can with ratchet (11) ingear ratchet (14), ratchet is connected with pull head (15).
2. lifting screw according to claim 1 is characterized in that described conical gear (8) bottom is provided with ferrous based powder metallurgical lining ring (16), and lifting bolt (3) lower end cross-under is in ferrous based powder metallurgical lining ring inside.
3. lifting screw according to claim 2 is characterized in that being provided with bearing (17) between described chassis (1) and the ferrous based powder metallurgical lining ring (16).
4. according to claim 1 or 2 or 3 described lifting screw, it is characterized in that being connected with stage clip (18) between described cover of dust (12) and the ratchet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203036052U CN201495069U (en) | 2009-05-26 | 2009-05-26 | Spiral jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203036052U CN201495069U (en) | 2009-05-26 | 2009-05-26 | Spiral jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201495069U true CN201495069U (en) | 2010-06-02 |
Family
ID=42438277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203036052U Expired - Fee Related CN201495069U (en) | 2009-05-26 | 2009-05-26 | Spiral jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201495069U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253609A (en) * | 2013-04-27 | 2013-08-21 | 中国长江三峡集团公司 | Jacking fixing system |
| CN110436371A (en) * | 2019-07-04 | 2019-11-12 | 杭州三图科技有限公司 | One kind being used for vehicle maintenance mechanical jack |
| CN110668345A (en) * | 2019-10-30 | 2020-01-10 | 泰州市汇顶机械制造有限公司 | Mechanical jack convenient to remove |
-
2009
- 2009-05-26 CN CN2009203036052U patent/CN201495069U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253609A (en) * | 2013-04-27 | 2013-08-21 | 中国长江三峡集团公司 | Jacking fixing system |
| CN103253609B (en) * | 2013-04-27 | 2015-09-30 | 中国长江三峡集团公司 | Top jacking system |
| CN110436371A (en) * | 2019-07-04 | 2019-11-12 | 杭州三图科技有限公司 | One kind being used for vehicle maintenance mechanical jack |
| CN110668345A (en) * | 2019-10-30 | 2020-01-10 | 泰州市汇顶机械制造有限公司 | Mechanical jack convenient to remove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201495069U (en) | Spiral jack | |
| CN201473262U (en) | Large-tonnage screw jack | |
| CN202152266U (en) | Dual-purpose spiral jack | |
| CN203327507U (en) | Planting and earth-boring machine for excavator | |
| CN115142797B (en) | Pdc drill bit for petroleum drilling and its usage | |
| CN201651099U (en) | Clutch for engineering percussion drill | |
| CN102744647A (en) | Rotary indexing structure of rotary worktable | |
| CN201007210Y (en) | Front-located rack bar oil cylinder panoramic tables of cantilevered mechanical boring machine | |
| CN206031739U (en) | Modular novel tiller | |
| CN202055752U (en) | Wear-resistant transmission shaft assembly of screw drilling jig | |
| CN114291714A (en) | Safe hoisting equipment for mold | |
| CN2756601Y (en) | Permanent magnet synchronous gearless traction machine | |
| CN200999178Y (en) | Cone gear hoisting device | |
| CN218491393U (en) | Hydraulic cylinder of electric forklift | |
| CN115306306B (en) | Drill bit for petroleum drilling and using method | |
| CN201143658Y (en) | Helical labor saving screw extractor with ground jack function | |
| CN215330153U (en) | Inlay ring large gear of mining excavator | |
| CN218504425U (en) | Sintering machine trolley bearing replacing tool | |
| CN211008501U (en) | Cushion disc | |
| CN212168969U (en) | Tailstock jacking device for overturning | |
| CN201580948U (en) | Dual-purpose electric jack | |
| CN219254712U (en) | Combined fixture for assembling nylon self-locking nut of gearbox of 5/6 ton loader | |
| CN204434081U (en) | A kind of novel hoisting crane electric rotary lifting hook group | |
| CN217434151U (en) | Wheel-pair axial jacking mechanism | |
| CN202499687U (en) | Pivot steering and U-turn device of small car |
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: 20100602 Termination date: 20130526 |