CN201411306Y - Screw drive lifting mechanism with safeguard protection function - Google Patents
Screw drive lifting mechanism with safeguard protection function Download PDFInfo
- Publication number
- CN201411306Y CN201411306Y CN2009203034930U CN200920303493U CN201411306Y CN 201411306 Y CN201411306 Y CN 201411306Y CN 2009203034930 U CN2009203034930 U CN 2009203034930U CN 200920303493 U CN200920303493 U CN 200920303493U CN 201411306 Y CN201411306 Y CN 201411306Y
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- CN
- China
- Prior art keywords
- screw
- female silk
- safety
- work
- lifting mechanism
- 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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- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A screw drive lifting mechanism with safeguard protection function, comprises: a screw rod, a work master screw, a safe master screw, a pin axle and a displacement detection element, wherein the workmaster screw is connected with the safe master screw by an acme screw thread on the screw rod and the work master screw is arranged above the safe master screw and the displacement detection element is mounted at the side surface of the screw rod and one end of the pin axle is fixed on the safe master screw and another end of the pin axle is in active connection with the work master screw. The screw drive lifting mechanism has screw wear detection and safe protection function with features of simple structure, low cost, safety and reliability.
Description
Technical field
The utility model relates to a kind of mechanical transmission mechanism, especially relates to a kind of worm drive lifting mechanism.
Background technology
At present, general worm drive lifting mechanism does not all have female silk abrasion detection and safety protection function, and when the worm drive lifting mechanism was applied in the weight-lifting equipment, its safety performance was relatively poor, and safety misadventure takes place easily in female silk wearing and tearing back.
The utility model content
The purpose of this utility model is the shortcoming that is to overcome existing worm drive lifting mechanism, and a kind of worm drive lifting mechanism with safety protection function is provided.
The technical solution of the utility model is: it comprises screw mandrel, the female silk of work, the female silk of safety, bearing pin and displacement detecting element, the female silk of described work is connected by the Acme thread on the screw mandrel with the female silk of safety, the female silk of work is installed in the female silk of safety top, the displacement detecting element is installed in the side of screw mandrel, bearing pin one end is fixed on the female silk of safety, and the other end flexibly connects with the female silk of work.
Described displacement detecting element can be selected mechanical switch or noncontacting pickup for use.
The female silk of described work bearing load power when normal operation, and the female silk of safety bearing load power not when normal operation.
Described bearing pin can relatively rotate with the female silk of safety by the female silk of restraint of labour.But bearing pin can make female silk of work and the female silk of safety make relative displacement along the axial line of screw mandrel.
The utility model is simple in structure, and is cheap, safe and reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to Fig. 1, present embodiment comprises screw mandrel 1, the female silk 2 of work, the female silk 4 of safety, bearing pin 3 and displacement detecting element 5, female 4 of the female silk 2 of described work and safety are connected by the Acme thread on the screw mandrel 1, the female silk 2 of work is installed in the female silk of safety 4 tops, displacement detecting element 5 is installed in the side of screw mandrel 1, bearing pin 3 one ends are fixed on the female silk 4 of safety, and the other end flexibly connects with the female silk 2 of work.
Screw mandrel 1 can be made relative rotary motion with female silk 2 of work and the female silk 4 of safety.
The female silk 2 of work bearing load power when normal operation, and the female silk 4 of safety bearing load power not when normal operation.
Principle of work: general because the requirement on the manufacturing process, in the worm drive, screw mandrel adopts intensity and the high material of hardness, and female silk adopts the little and low material of hardness of friction coefficient, so the screw mandrel wearing and tearing are big relatively for female silk, detect female silk wearing clearance, adopt relative measure, just can guarantee worm drive lifting mechanism safety.Because bearing load power during the female silk of work 2 normal operation, so wearing and tearing are bigger than safety mother silk 4, when female silk 2 wearing and tearing of work are big, produce along the relative displacement of the axial line of screw mandrel 1 between the female silk 4 of meeting and safety, when this displacement exceeds design parameters, displacement detecting element 5 exportable electric signal, this electric signal can be used for reporting to the police and the work of cut-out Electronmotive Force.
The function of bearing pin 3 is: make between female silk 2 of work and the female silk 4 of safety not relatively rotate, so when the female silk 2 of work did not did not wear and tear, comparatively safe female silk 4 does not have displacement, and was correct with the assurance displacement detecting.
With female 2 top that is arranged on the female silk 4 of safety of work, its function is: when the Acme thread of work mother silk 2 ruptured fully because of severe wear, female silk 4 meetings of safety be held the female silk 2 of work of damage to top offset, thereby play the security insurance effect.
Claims (3)
1. the worm drive lifting mechanism that has safety protection function; comprise screw mandrel, the female silk of work; it is characterized in that; also be provided with the female silk of safety, bearing pin and displacement detecting element; the female silk of described work is connected by the Acme thread on the screw mandrel with the female silk of safety, and the female silk of work is installed in the female silk of safety top, and the displacement detecting element is installed in the side of screw mandrel; bearing pin one end is fixed on the female silk of safety, and the other end flexibly connects with the female silk of work.
2. the worm drive lifting mechanism with safety protection function according to claim 1 is characterized in that described displacement detecting element is a mechanical switch.
3. the worm drive lifting mechanism with safety protection function according to claim 1 is characterized in that described displacement detecting element is a noncontacting pickup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203034930U CN201411306Y (en) | 2009-05-22 | 2009-05-22 | Screw drive lifting mechanism with safeguard protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203034930U CN201411306Y (en) | 2009-05-22 | 2009-05-22 | Screw drive lifting mechanism with safeguard protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201411306Y true CN201411306Y (en) | 2010-02-24 |
Family
ID=41713193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203034930U Expired - Fee Related CN201411306Y (en) | 2009-05-22 | 2009-05-22 | Screw drive lifting mechanism with safeguard protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201411306Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105947927A (en) * | 2016-06-28 | 2016-09-21 | 昆山洺九机电有限公司 | Lifting mechanism based on double-layer motor |
-
2009
- 2009-05-22 CN CN2009203034930U patent/CN201411306Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105947927A (en) * | 2016-06-28 | 2016-09-21 | 昆山洺九机电有限公司 | Lifting mechanism based on double-layer motor |
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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: 20100224 Termination date: 20170522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |