CN2284769Y - Lifting structure of adjusting screw of jack - Google Patents
Lifting structure of adjusting screw of jack Download PDFInfo
- Publication number
- CN2284769Y CN2284769Y CN 97206577 CN97206577U CN2284769Y CN 2284769 Y CN2284769 Y CN 2284769Y CN 97206577 CN97206577 CN 97206577 CN 97206577 U CN97206577 U CN 97206577U CN 2284769 Y CN2284769 Y CN 2284769Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- jack
- lifting structure
- screw
- piston rod
- 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 lifting structure of the adjusting screw rod of a jack. The utility model comprises a thread arranged on the outer surface of an adjusting screw rod and a thread arranged in the inner hole of a piston rod. The utility model is characterized in that the thread arranged on the outer surface of the adjusting screw rod and the thread arranged in the inner hole of the piston rod are the screw grooves with the same thread distances. The inner part of the spiral groove composed of the two threads is provided with a screw spring.
Description
The utility model is about jack, particularly adjusts the lifting structure of screw rod about jack.
Jack is a kind of manipulative device that article are used that promotes.Because it is light laborsaving that it is operated, be widely used in the maintenance occasion of various mechanical equipments.Especially oil jack is more popular with users.This jack piston rod is provided with the adjustment screw rod, regulates the elemental height of jack with it, to adapt to different operational spaces.Be to adopt Acme thread to come bonded assembly between the adjustment screw rod of existing jack and the piston rod.The lifting structure of this Acme thread can make the adjustment screw rod carry out step-less adjustment in its lift scope.But well-known, according to general screw-threaded engagement rule, externally threaded external diameter is greater than the internal diameter of negative thread.Specific to jack, the external diameter of adjusting the screw rod shaft must be greater than the screw internal diameter of piston rod; And, need the unnecessary metallic material between thread is removed for internal and external threads is meshing with each other.Therefore reduce the degree of utilization of material, and increased machining period.This is the maximum weak point that present jack is adjusted the screw rod lifting structure.
The purpose of this utility model is to provide a kind of jack to adjust the lifting structure of screw rod, it can carry out the stepless adjustment of height easily, and adjust the screw internal diameter of the shaft diameter of screw rod, with the degree of utilization that improves material and reduce machining period less than piston rod.
The purpose of this utility model is achieved in that a kind of lifting structure of jack adjustment screw rod, it comprises the screw thread and the screw thread that is arranged in the piston rod endoporus that is arranged on adjustment screw rod appearance, it is characterized in that the described screw thread of adjusting the screw rod appearance that is arranged on is the spiral groove with identical pitch with the screw thread that is arranged in the piston rod endoporus; In the synthetic plug helix of two above-mentioned screw threads, be provided with coil spring.
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Embodiment 1. the utility model as shown in Figure 1, it comprises and is arranged on the screw thread 5 of adjusting screw rod 1 appearance and is arranged on screw thread 6 in piston rod 4 endoporus.Screw thread 5 and 6 is that section form is the semicircle of same diameter or less than the arc spiral groove of semicircle, and their pitch equates.Therefore, above-mentioned screw thread 5 and 6 synthesizes a plug helix that its section is rounded.In above-mentioned plug helix, be provided with the rounded coil spring of section 3.The pitch of the pitch of coil spring 3 and screw thread 5 and 6 equates.Top end at piston rod 4 endoporus is provided with back-up ring 2, deviates from from endoporus in order to prevent coil spring 3.The pitch of coil spring 3 also can be greater than or less than the pitch of screw thread 5 and 6, and at this moment, coil spring 3 has certain precompressed compression or pretension in above-mentioned plug helix.This precompressed compression or pretension will produce certain friction when adjusting screw rod 1 rotation, can prevent the rotation that coil spring 3 is own on the one hand, be easy to keep adjusting the location of screw rod 1 on the other hand.
The utility model has utilized helical spring interior half one and outer half one to embed respectively in the spiral groove and the spiral groove in piston rod 4 endoporus of adjusting screw rod 1 appearance, both will adjust the object weight transfer that spiral shell 1 bar bears and give piston rod 4, play the function of spiral lifting again, guaranteed to adjust the step-less adjustment of screw rod 1 height, made the diameter of the diameter of adjustment screw rod 1 again less than piston rod 4 endoporus.Therefore, save material and reduced machining period, also reduced productive costs.
Claims (4)
1. a jack is adjusted the lifting structure of screw rod, it comprises the screw thread and the screw thread that is arranged in the piston rod endoporus that is arranged on adjustment screw rod appearance, it is characterized in that the described screw thread of adjusting the screw rod appearance that is arranged on is the spiral groove with identical pitch with the screw thread that is arranged in the piston rod endoporus; In the synthetic plug helix of two above-mentioned screw threads, be provided with coil spring.
2. jack according to claim 1 is adjusted the lifting structure of screw rod, and it is characterized in that: the top end at the piston rod endoporus is provided with back-up ring.
3. jack according to claim 1 is adjusted the lifting structure of screw rod, it is characterized in that: the section form of described spiral groove is semicircle or arc less than semicircle; Described helical spring section is circular.
4. jack according to claim 1 is adjusted the lifting structure of screw rod, and it is characterized in that: the section form of described spiral groove is a rectangle; Described helical spring section is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97206577 CN2284769Y (en) | 1997-02-21 | 1997-02-21 | Lifting structure of adjusting screw of jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97206577 CN2284769Y (en) | 1997-02-21 | 1997-02-21 | Lifting structure of adjusting screw of jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2284769Y true CN2284769Y (en) | 1998-06-24 |
Family
ID=33926539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97206577 Expired - Fee Related CN2284769Y (en) | 1997-02-21 | 1997-02-21 | Lifting structure of adjusting screw of jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2284769Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460102C (en) * | 2007-02-28 | 2009-02-11 | 四川东风电机厂有限公司 | Usage of screw-bearing type jack for mold assembling and disassembling |
| CN103192254A (en) * | 2013-04-18 | 2013-07-10 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Rotary ring adjustor and usage thereof |
| CN109668072A (en) * | 2019-02-21 | 2019-04-23 | 蚌埠崧欣电子科技有限公司 | A kind of LED light of Color tunable control |
-
1997
- 1997-02-21 CN CN 97206577 patent/CN2284769Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460102C (en) * | 2007-02-28 | 2009-02-11 | 四川东风电机厂有限公司 | Usage of screw-bearing type jack for mold assembling and disassembling |
| CN103192254A (en) * | 2013-04-18 | 2013-07-10 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Rotary ring adjustor and usage thereof |
| CN103192254B (en) * | 2013-04-18 | 2016-06-29 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Swivel becket level governor and using method thereof |
| CN109668072A (en) * | 2019-02-21 | 2019-04-23 | 蚌埠崧欣电子科技有限公司 | A kind of LED light of Color tunable control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |