CN212374831U - Screw rod lifter with safety nut - Google Patents
Screw rod lifter with safety nut Download PDFInfo
- Publication number
- CN212374831U CN212374831U CN202020542879.3U CN202020542879U CN212374831U CN 212374831 U CN212374831 U CN 212374831U CN 202020542879 U CN202020542879 U CN 202020542879U CN 212374831 U CN212374831 U CN 212374831U
- Authority
- CN
- China
- Prior art keywords
- worm wheel
- safety nut
- box body
- worm
- screw 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.)
- Active
Links
Images
Landscapes
- Gear Transmission (AREA)
Abstract
The screw rod lifter with the safety nut comprises a box body, wherein an end cover is arranged on the top surface of the box body, a worm wheel and a worm are arranged in the box body, the worm wheel is rotatably arranged in the box body through a bearing, and the worm is rotatably arranged in the box body and meshed with the worm wheel; the end part of the worm wheel is provided with a safety nut which is positioned on the outer side of the end cover; the inner hole of the worm wheel is provided with an internal thread, the corresponding surface of the worm wheel for assembling with the safety nut is provided with a tooth socket, the inner hole of the safety nut is provided with an internal thread, and the corresponding surface of the safety nut for assembling with the worm wheel is provided with a tooth claw matched with the tooth socket; the inner holes of the worm wheel and the safety nut are connected with a screw rod in a threaded manner, and the screw rod longitudinally penetrates through the box body and the end cover. The utility model discloses an observe the vice wearing and tearing condition of lead screw in clearance between safety nut and the worm wheel, structural design is ingenious, and the installation is small, discovers at any time whether the lead screw is vice to wear and tear excessively to guarantee the safe operation of machine.
Description
Technical Field
The utility model relates to a lead screw lift technical field especially relates to take lead screw lift of safety nut.
Background
A general worm wheel screw rod lifter is characterized in that internal threads are turned in inner holes of a worm wheel and matched with a screw rod, the worm wheel is driven to rotate by inputting power through a worm, and the inner hole threads of the worm wheel are screwed with the screw rod, so that the rotary motion of the worm wheel is converted into the linear motion of the screw rod to lift a heavy object. However, the screw rod and the worm gear inner hole are in threaded fit to realize friction transmission, the screw rod and the worm gear inner hole nut are easy to wear, and unsafe factors are easy to generate if the wear loss is large and cannot be timely detected.
Disclosure of Invention
In order to overcome the problem, the utility model provides a can observe lead screw elevator of taking safety nut of vice wearing and tearing condition of lead screw.
The utility model adopts the technical proposal that: the screw rod lifter with the safety nut comprises a box body, wherein an end cover is arranged on the top surface of the box body, a worm wheel and a worm are arranged in the box body, the worm wheel is rotatably arranged in the box body through a bearing, and the worm is rotatably arranged in the box body and meshed with the worm wheel; the end part of the worm wheel is provided with a safety nut which is positioned on the outer side of the end cover; the inner hole of the worm wheel is provided with an internal thread, the corresponding surface of the worm wheel for assembling with the safety nut is provided with a tooth socket, the inner hole of the safety nut is provided with an internal thread, and the corresponding surface of the safety nut for assembling with the worm wheel is provided with a tooth claw matched with the tooth socket; the inner holes of the worm wheel and the safety nut are connected with a screw rod in a threaded manner, and the screw rod longitudinally penetrates through the box body and the end cover.
Furthermore, the variation range of the distance between the tooth socket and the tooth claw is 0-0.8 times of the thread pitch of the external thread of the screw rod.
Furthermore, a first oil seal is arranged between the end cover and the worm wheel, and a second oil seal is arranged between the box body and the worm wheel.
The utility model has the advantages that: the abrasion condition of the screw rod pair can be found by observing the gap between the safety nut and the worm wheel, the structure design is ingenious, the installation volume is small, and whether the screw rod pair is abraded excessively or not is perceived at any time, so that the safe operation of the machine is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: 1. safety nut 2, worm gear; 3. a first oil seal; 4. a first bearing; 5. a worm; 6. a second bearing; 7. a second oil seal; 8. a screw rod; 9. a box body; 10. and (4) end covers.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of protection of the invention is not limited thereto:
referring to the attached drawings, the screw rod lifter with the safety nut comprises a box body 9, wherein an end cover 10 is arranged on the top surface of the box body 9, a worm wheel 2 and a worm 5 are installed in the box body 9, the worm wheel 2 is rotatably arranged in the box body 9 through a first bearing 4 and a second bearing 6, and the worm 5 is rotatably arranged in the box body 9 and meshed with the worm wheel 2; the end part of the worm wheel 2 is provided with a safety nut 1, and the safety nut 1 is positioned on the outer side of the end cover 10; an inner hole of the worm wheel 2 is provided with an internal thread, a tooth socket is arranged on the corresponding surface of the worm wheel 2 for assembling with the safety nut 1, an inner hole of the safety nut 1 is provided with an internal thread, and a tooth claw matched with the tooth socket is arranged on the corresponding surface of the safety nut 1 for assembling with the worm wheel 2; the inner holes of the worm wheel 2 and the safety nut 1 are in threaded connection with a screw rod 8, and the screw rod 8 longitudinally penetrates through the box body 9 and the end cover 10. The variation range of the distance between the tooth socket and the tooth claw is 0-0.8 times of the thread pitch of the external thread of the screw rod 8. A first oil seal 3 is arranged between the end cover 10 and the worm wheel 2, and a second oil seal 7 is arranged between the box body 9 and the worm wheel 2.
The specific working principle is as follows: when the worm wheel 2 and the safety nut 1 are processed, the tooth spaces of the worm wheel 2 and the tooth claws of the safety nut 1 are well determined, internal threads are processed, marks and matching numbers of matching positions of the worm wheel 2 and the safety nut 1 are made, and smooth assembly and the consistent distance between the tooth spaces of the worm wheel 2 and the tooth claws of the safety nut 1 are guaranteed.
During operation, when the worm 5 inputs power, the worm wheel 2 is driven to rotate, the tooth grooves on the end surface of the worm wheel 2 drive the tooth claws on the end surface of the safety nut 1, so that the safety nut 1 is driven to rotate, and the internal thread of the worm wheel 2 is matched with the external thread of the screw rod 8 to drive the screw rod 8 to do linear motion. The tooth grooves of the worm wheel 2 and the tooth claws of the safety nut 1 are kept at a constant distance. The worm wheel 2 and the screw 8 are used as the main receptors for bearing axial force, and the safety nut 1 only does auxiliary motion along with the worm wheel 2.
After the operation for a period of time, because the inevitable wearing and tearing phenomenon that appears in 2 hole screw threads of worm wheel and 8 external screw threads of lead screw of bearing frictional force effect, thereby cause the screw thread clearance increase of 2 hole screw threads of worm wheel and 8 external screw threads of lead screw, because safety nut 1 only plays the auxiliary motion this moment, therefore the hole screw thread wearing and tearing of safety nut 1 are very little, the hole screw thread of safety nut 1 and the clearance of 8 external screw threads of lead screw are very little relatively, under the effect of axial force on lead screw 8, the tooth's socket of worm wheel 2 and the distance grow of the tooth claw of safety nut 1, when the variation value of this distance surpasses 0.1 times of 2 external screw thread pitches of lead screw, 8 external screw threads of lead screw and 2 hole screw thread wearing and tearing of worm wheel transfinite, removable new worm.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather the scope of the invention is intended to include equivalent technical means as would be understood by those skilled in the art from the inventive concepts.
Claims (3)
1. Take safety nut's lead screw lift, its characterized in that: the worm gear type energy-saving box comprises a box body, wherein an end cover is arranged on the top surface of the box body, a worm gear and a worm are arranged in the box body, the worm gear is rotatably arranged in the box body through a bearing, and the worm is rotatably arranged in the box body and meshed with the worm gear; the end part of the worm wheel is provided with a safety nut which is positioned on the outer side of the end cover; the inner hole of the worm wheel is provided with an internal thread, the corresponding surface of the worm wheel for assembling with the safety nut is provided with a tooth socket, the inner hole of the safety nut is provided with an internal thread, and the corresponding surface of the safety nut for assembling with the worm wheel is provided with a tooth claw matched with the tooth socket; the inner holes of the worm wheel and the safety nut are connected with a screw rod in a threaded manner, and the screw rod longitudinally penetrates through the box body and the end cover.
2. The feed screw elevator with safety nut of claim 1, characterized in that: the variation range of the distance between the tooth socket and the tooth claw is 0-0.8 times of the thread pitch of the external thread of the screw rod.
3. The feed screw elevator with safety nut of claim 1, characterized in that: a first oil seal is arranged between the end cover and the worm wheel, and a second oil seal is arranged between the box body and the worm wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020542879.3U CN212374831U (en) | 2020-04-14 | 2020-04-14 | Screw rod lifter with safety nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020542879.3U CN212374831U (en) | 2020-04-14 | 2020-04-14 | Screw rod lifter with safety nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212374831U true CN212374831U (en) | 2021-01-19 |
Family
ID=74160014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020542879.3U Active CN212374831U (en) | 2020-04-14 | 2020-04-14 | Screw rod lifter with safety nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212374831U (en) |
-
2020
- 2020-04-14 CN CN202020542879.3U patent/CN212374831U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212374831U (en) | Screw rod lifter with safety nut | |
| CN203051665U (en) | Intermediate slipping device of gearbox | |
| CN205271547U (en) | Heavy annex head automatic take -up unit | |
| CN214274495U (en) | High-strength pneumatic regulating valve | |
| CN102728859B (en) | Axial locking mechanism of machine tool spindle | |
| CN202165468U (en) | Motor shaft with mandrel gear | |
| CN209065326U (en) | High-speed and high-efficiency elevator | |
| CN101576128B (en) | Engaged clutch | |
| CN202510630U (en) | Rotary upright-type worm and worm gear lifting machine for lifting loads | |
| CN202152828U (en) | Metallurgical gear box structure | |
| CN205678085U (en) | The automatic differential actuator of oil pumper | |
| CN204755872U (en) | Hoist drive arrangement bearing automatic lubrication installation | |
| CN205026023U (en) | Input axle head plates worm gear speed reducer ware of rust -resistant chromium | |
| CN201871543U (en) | Cold rolling machine easy assembling and disassembling big inclination angle floating ring seal drum type tooth transmission shaft structure | |
| CN209990889U (en) | Tractor rear axle transmission assembly adjusting device | |
| CN202851761U (en) | Brake adjusting arm | |
| CN201187535Y (en) | Engaging type clutch | |
| CN203292507U (en) | High-speed and large-resistance gear main shaft assembly of numerical control drilling and milling machine | |
| CN203161799U (en) | Stepped gear shaft | |
| CN202441809U (en) | Precise and gapless worm and worm gear reducer | |
| CN211619774U (en) | Novel electric rail clamping device | |
| CN205331472U (en) | Electronic planet roller screw transmission gate valve | |
| CN218290264U (en) | Multistage lead screw motion worm gear lift | |
| CN204961848U (en) | Manual planet roller screw transmission stop valve | |
| CN202418515U (en) | Gapless worm-gear speed reducer for wood-working mechanical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |