CN216005136U - Automatic alarm safety nut lift - Google Patents
Automatic alarm safety nut lift Download PDFInfo
- Publication number
- CN216005136U CN216005136U CN202121305771.3U CN202121305771U CN216005136U CN 216005136 U CN216005136 U CN 216005136U CN 202121305771 U CN202121305771 U CN 202121305771U CN 216005136 U CN216005136 U CN 216005136U
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- nut
- safety nut
- position switch
- safety
- automatic alarm
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Abstract
The utility model belongs to the technical field of screw rod elevator dies, and relates to an automatic alarm safety nut elevator which comprises a safety nut and a bearing nut, wherein a position switch used for monitoring the position change of the safety nut is arranged at the position of the safety nut, the position switch is fixed on a cover and used for monitoring the position change of the upper end surface of the safety nut.
Description
Technical Field
The utility model belongs to the technical field of screw rod elevators, and relates to a device for manufacturing a hanging hole and a ventilation opening of an engine room cover, in particular to an automatic alarm safety nut elevator.
Background
For an elevator equipped with a safety nut, if the form is that the cage is fixed and the lead screw performs an elevating motion, the safety nut needs to be installed inside the cage of the elevator. If the abrasion condition of the bearing nut needs to be checked on site, the gap between the bearing nut and the safety nut needs to be measured by disassembling the machine, and the bearing nut is limited by site conditions and is very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic alarm safety nut lifter which can solve the problems pointed out in the background technology.
The automatic alarm safety nut lifter comprises a safety nut and a bearing nut, wherein a position switch used for monitoring the position change of the safety nut is arranged at the safety nut.
Preferably, the position switch is fixed on the cover and used for monitoring the position change of the upper end face of the safety nut.
Preferably, the position switch is a proximity switch or a photoelectric switch, the position switch is fixed on the machine cover through a position switch mounting plate, and a receiving end of the position switch penetrates into the machine cover to monitor the upper end face of the safety nut.
Preferably, the lower end face of the safety nut and the upper end face of the bearing nut are embedded together through a concave-convex structure, and a gap is formed between the lower end face of the safety nut and the upper end face of the bearing nut.
Preferably, the lower end face of the safety nut is provided with a groove, and the upper end face of the bearing nut is provided with a boss matched with the groove.
The utility model provides a scheme capable of automatically detecting the abrasion loss of a bearing nut, wherein a proximity switch fixed on a machine cover is used for detecting the position of a safety nut in a box body of an elevator, when the abrasion loss of the bearing nut reaches a specified value, the position of the safety nut is changed, and a position switch receives a signal and prompts to prompt that the bearing nut needs to be replaced in time, so that the abrasion condition of the bearing nut can be automatically acquired without frequently opening the box body, whether the bearing nut needs to be replaced or not is saved, time and labor are saved, and the maintenance cost is saved.
Drawings
Figure 1 is a schematic structural view of the present invention,
figure 2 is a schematic structural view of the safety nut of the present invention,
figure 3 is a schematic structural view of the load nut of the present invention,
figure 4 is a schematic view of the structure of the position switch mounting plate of the present invention,
description of reference numerals:
reference numbers in the figures: a safety nut 1; a groove 11; a carrier nut 2; a boss 21; a position switch 3; a machine cover 4; a position switch mounting plate 5.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
As shown in fig. 1-4, the automatic alarm safety nut elevator provided by the embodiment of the present invention includes a safety nut 1 and a bearing nut 2, and a position switch 3 for monitoring a position change of the safety nut 1 is disposed at the safety nut 1.
Specifically, position switch 3 is fixed at cover 4, position switch 3 is proximity switch or photoelectric switch, and it is fixed through position switch mounting panel 5 on the cover 4, its receiving terminal penetrates in the cover 4, it is used for monitoring the position change of 1 up end of safety nut.
The lower end face of the safety nut 1 and the upper end face of the bearing nut 2 are embedded together through a concave-convex structure, a gap is formed between the lower end face of the safety nut 1 and the upper end face of the bearing nut 2, the gap is generally larger than 0.25P (P means screw pitch of a screw rod), a groove 11 is formed in the lower end face of the safety nut 1, and a boss 21 matched with the groove 11 is formed in the upper end face of the bearing nut 2, such as a cross groove and a cross boss or a straight groove and a straight boss.
The working principle of the utility model is as follows: during installation, the position switch 3 is screwed into the threaded hole of the position switch mounting plate 5, then the position switch mounting plate 5 is attached to the plane on the cover 4, the position switch 3 is continuously screwed, the distance between the sensing end part of the position switch 3 and the safety nut 1 is smaller than the detection distance of the position switch 3, and the position switch 3 is ensured not to be in contact with the safety nut 1. After the distance is adjusted, the position switch 3 is locked and fixed by a nut to limit the axial movement of the position switch. The position switch 3 is connected with the detector, the upper position and the lower position of the position switch mounting plate 5 are moved, the brightness change of the indicator light of the position switch 3 is observed, the position where the position switch 3 can act right is found, and the mark is made. Checking the screw pitch P of the screw rod, moving the position switch mounting plate 5 downwards by 0.25P at the position, fixing the position switch mounting plate 5 on the cover 4 by using screws, finishing adjustment, and finally connecting the position switch 3 into an electric control part.
The gap is gradually reduced along with the increasing of the abrasion of the bearing nut 2, and when the abrasion amount of the thread tooth thickness of the bearing nut 2 reaches 0.25P, the matching thread parts of the screw rod and the bearing nut 2 are jointed together. When the internal thread of the lower bearing nut 2 (worm wheel) is worn, the screw rod moves downwards for a distance due to downward load and gravity, and the distance is equal to the wear loss of the bearing nut 2. The worm wheel is supported by a bearing in the axial direction in the box body, can not displace in the vertical direction and only rotates in the vertical direction. The safety nut 1 does not bear axial load, is not abraded, and only synchronously rotates along with the bearing nut 2. Therefore, the safety nut 1 can move downwards by an equal distance under the driving of the screw rod, and at the moment, the position switch receives a signal and prompts that the bearing nut 2 needs to be replaced in time.
The following disclosure is only for a few specific embodiments of the present invention, however, the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (3)
1. The utility model provides an automatic alarm safety nut lift, includes safety nut (1) and bears nut (2), its characterized in that: safety nut (1) department is equipped with position switch (3) that are used for monitoring its position change, position switch (3) are fixed on cover (4), and it is used for monitoring the position change of safety nut (1) up end, it is fixed through position switch mounting panel (5) on cover (4), its receiving terminal penetrates in cover (4), the up end of monitoring safety nut (1), the lower terminal surface of safety nut (1) with the up end that bears nut (2) passes through concave-convex structure and inlays together, has the clearance between the two.
2. An automatic alarm safety nut elevator according to claim 1, characterized in that: the position switch (3) is a proximity switch or a photoelectric switch,
3. an automatic alarm safety nut elevator according to claim 1, characterized in that: the lower end face of the safety nut (1) is provided with a groove (11), and the upper end face of the bearing nut (2) is provided with a boss (21) matched with the groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121305771.3U CN216005136U (en) | 2021-06-11 | 2021-06-11 | Automatic alarm safety nut lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121305771.3U CN216005136U (en) | 2021-06-11 | 2021-06-11 | Automatic alarm safety nut lift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216005136U true CN216005136U (en) | 2022-03-11 |
Family
ID=80524197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121305771.3U Active CN216005136U (en) | 2021-06-11 | 2021-06-11 | Automatic alarm safety nut lift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216005136U (en) |
-
2021
- 2021-06-11 CN CN202121305771.3U patent/CN216005136U/en active Active
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| GR01 | Patent grant |