CN218879341U - Screw rod with upper limit switch and lower limit switch - Google Patents
Screw rod with upper limit switch and lower limit switch Download PDFInfo
- Publication number
- CN218879341U CN218879341U CN202120501434.5U CN202120501434U CN218879341U CN 218879341 U CN218879341 U CN 218879341U CN 202120501434 U CN202120501434 U CN 202120501434U CN 218879341 U CN218879341 U CN 218879341U
- Authority
- CN
- China
- Prior art keywords
- limit switch
- upper limit
- lower limit
- rod
- 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
- Mechanisms For Operating Contacts (AREA)
Abstract
The utility model relates to a screw rod with an upper limit switch and a lower limit switch, which comprises an upper screw rod part and a lower screw rod part which are connected through a threaded rod, wherein the end part of the threaded rod is provided with a first gear and a second gear which are meshed; the screw rod is provided with an upper limit switch and a lower limit switch, the upper limit switch comprises a blocking piece, an upper limit switch assembly and a sliding seat, and an upper limit displacement moving rod and a pressing rod are arranged on the sliding seat; the upper limit switch assembly comprises an upper limit microswitch which is provided with an upper limit contact piece; limit switch includes ejector pin and lower limit switch subassembly down, and the limit switch subassembly includes limit switch and lower limit displacement and moves the pole down, and limit switch is equipped with down the limit switch bump down, and lower limit displacement moves the pole and is provided with wide portion and narrow portion, connects through the slope between wide portion and the narrow portion. The utility model discloses simple structure, sensitivity height, fault rate are almost zero, for realizing that lift platform's stable goes up and down with effective spacing make the contribution.
Description
Technical Field
The utility model relates to a lead screw specifically relates to a lead screw, mainly used lift platform that have last limit switch and lower limit switch.
Background
The lead screw is a core component in the lifting platform, and the quality and the function of the lead screw relate to the problems of whether the lifting of the lifting platform is stable, whether mute lifting can be realized and the like. Therefore, to realize the superiority of lift platform, the first task is to seek a lead screw that performance is superior. However, the stroke limit in the screw rod is a technical problem in the present stage, and the stroke limit switch in the prior art has a complex structure, is difficult to install, has low sensitivity and a high failure rate, often has the condition of not being limited in time, causes excessive stroke, and cannot obtain satisfactory user experience.
Therefore, the development of the lead screw with the travel limit switch, which has the advantages of simple structure, convenience in installation, high sensitivity and low failure rate, is a main development direction of technicians in the field at the present stage.
Based on this, provide the utility model discloses.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem of prior art, the utility model provides a lead screw with go up limit switch and limit switch down, limit switch simple structure, sensitivity height, fault rate of upper level and lower during its goes up and down are nearly zero, for realizing that lift platform's stable goes up and down and effectively spacing make the contribution.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
a screw rod with an upper limit switch and a lower limit switch comprises an upper portion and a lower portion of the screw rod which are connected through a threaded rod, wherein a first gear and a second gear are mounted at the end of the threaded rod and are meshed; the lead screw is provided with an upper limit switch and a lower limit switch, the upper limit switch comprises a blocking piece, an upper limit switch assembly and a sliding seat, the blocking piece is provided with a groove, the sliding seat is provided with an upper limit displacement moving rod and a pressing rod, the upper limit displacement moving rod extends into the groove, and the end part of the upper limit displacement moving rod is provided with an upper limit body; the upper limit switch assembly comprises an upper limit microswitch, the upper limit microswitch is provided with an upper limit contact piece, and the pressure rod is positioned above the upper limit contact piece; lower limit switch includes ejector pin and lower limit switch subassembly, lower limit switch subassembly includes that lower limit micro-gap switch and lower limit displacement move the pole, lower limit micro-gap switch is equipped with down the limit switch bump, lower limit displacement moves the pole and is provided with wide portion and narrow portion, connect through the slope between wide portion and the narrow portion.
The upper part of the screw rod is provided with an upper seat body, the lower part of the screw rod is provided with a lower seat body, the upper limit switch assembly, the lower limit switch assembly and the sliding seat are arranged on the upper seat body, and the blocking piece and the ejector rod are arranged on the lower seat body; the upper limit switch assembly, the sliding seat and the blocking piece are located on one side of the screw rod, and the lower limit switch assembly and the ejector rod are located on the other side of the screw rod.
The upper seat body is provided with a fixed seat, and the upper limit microswitch is arranged on the fixed seat.
The end part of the upper limit displacement moving rod is provided with an upper limit spring, and the upper limit spring is positioned between the fixed seat and the sliding seat.
The lower part of the screw rod is provided with a slide rail, and the upper limit displacement moving rod slides in the slide rail.
The lower limit displacement moving rod is provided with a lower limit spring.
The lower limit displacement moving rod is provided with a lower limit body, and the lower limit displacement moving rod moves in the lower limit body.
The lower retainers are two, and the wide portion and the narrow portion are located between the two lower retainers.
The upper seat body is provided with a through hole, and when the lower limit switch is closed, the end part of the lower limit displacement moving rod extends out of the outer side of the through hole.
The beneficial effects of the utility model are as follows:
the utility model has the screw rod with the upper limit switch and the lower limit switch, when the screw rod rises to the highest position, the upper limit contact piece is pressed down through the pressure rod, and the upper limit micro switch can be effectively closed, so that the screw rod stops moving and the lifting platform is prevented from rising again; when the lead screw descends to the lowest position, the lower limit microswitch can be effectively closed through the abutting pressure of the wide part on the lower limit switch salient point, so that the lead screw stops moving and the lifting platform is prevented from descending again. The utility model discloses simple structure, sensitivity height, fault rate are almost zero, for realizing that lift platform's stable goes up and down and effectively spacing make the contribution.
Drawings
Fig. 1 is a schematic view of the internal structure of the screw rod of the present invention;
fig. 2 is a schematic view of an open state of the upper limit switch of the present invention;
fig. 3 is a schematic diagram of the closed state of the upper limit switch in the present invention; a
Fig. 4 is a schematic diagram of an open state of the lower limit switch in the present invention;
fig. 5 is a schematic diagram of a closed state of the lower limit switch according to the present invention;
wherein, 1 is a threaded rod, 2 is a lead screw upper portion, 3 is a lead screw lower portion, 4 is a gear I, 5 is a gear II, 6 is a blocking piece, 7 is a sliding seat, 8 is a groove, 9 is an upper limit displacement moving rod, 10 is a pressing rod, 11 is an upper limit body, 12 is an upper limit micro switch, 13 is an upper limit contact piece, 14 is a mandril, 15 is a lower limit micro switch, 16 is a lower limit displacement moving rod, 17 is a lower limit switch salient point, 18 is a wide portion, 19 is a narrow portion, 20 is a slope, 21 is an upper seat body, 22 is a lower seat body, 23 is a fixed seat, 24 is an upper limit spring, 25 is a sliding rail, 26 is a lower limit spring, and 27 is a lower limit body.
Detailed Description
The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited thereto.
As shown in fig. 1-5, the screw with the upper limit switch and the lower limit switch of the present invention includes an upper portion 2 and a lower portion 3 connected by a threaded rod 1, a first gear 4 and a second gear 5 are installed at the end of the threaded rod 1, and the first gear 4 is engaged with the second gear 5; the screw rod is provided with an upper limit switch and a lower limit switch.
The upper part 2 of the screw rod is provided with an upper seat body 21, and the lower part 3 of the screw rod is provided with a lower seat body 22. Lower pedestal 22 is equipped with and blocks piece 6, blocks piece 6 and is equipped with groove 8, and upper base 21 is installed and is gone up limit switch subassembly and sliding seat 7, and upper base 21 installs fixing base 23, and last spacing micro-gap switch 12 is installed on fixing base 23. An upper limit displacement moving rod 9 and a pressure rod 10 are installed on the sliding seat 7, the upper limit displacement moving rod 9 extends into the groove 8, and an upper limit retainer 11 is arranged at the end part of the upper limit displacement moving rod 9; the other end of the upper limit displacement moving rod 9 is provided with an upper limit spring 24, and the upper limit spring 24 is positioned between the fixed seat 23 and the sliding seat 7. The upper limit switch assembly comprises an upper limit microswitch 12, the upper limit microswitch 12 is provided with an upper limit contact piece 13, and the pressure lever 10 is positioned above the upper limit contact piece 13.
The upper limit switch assembly, the lower limit switch assembly and the sliding seat 7 are arranged on the upper seat body 21, and the blocking piece 6 and the mandril 14 are arranged on the lower seat body 22; the upper limit switch assembly, the sliding seat 7 and the blocking piece 6 are located on one side of the screw rod, and the lower limit switch assembly and the ejector rod 14 are located on the other side of the screw rod.
For the sensitivity that increases the switch, the utility model provides a lower limit displacement moves and is equipped with two lower retainers 27 on the pole 16, and lower limit displacement moves pole 16 and removes in lower spacing body 27, and wide portion 18 and narrow portion 19 are located between two lower retainers 27, realize spacing wide portion 18 and narrow portion 19, has also realized spacing to lower spacing spring 26.
When the screw rod device is used, the upper seat body 21 is arranged on the upper portion 2 of the screw rod, the lower seat body 22 is arranged on the lower portion 3 of the screw rod, the lower portion 3 of the screw rod further comprises a slide rail 25, and when the screw rod device is used, the upper limit displacement moving rod 9 slides in the slide rail 25.
When a user needs to lift the lifting platform, the upper limit displacement moving rod 9 slides in the sliding rail 25 along with the upward movement of the upper part 2 of the screw rod, after the upper limit retainer 11 slides to a certain distance, the upper limit retainer 11 is blocked by the blocking piece 6, so that the upper limit displacement moving rod 9 can not slide any more, at the moment, the sliding seat 7 is pulled downwards along with the continuous rising of the screw rod, the pressing rod 10 slowly approaches the upper limit contact piece 13, the pressing rod 10 presses the upper limit contact piece 13 until the upper limit spring 24 is pressed to the lowest position, the upper limit micro switch 12 is closed, the screw rod stops rising, and the lifting platform also stops rising.
When a user needs to descend the lifting platform, the upper portion 2 of the screw rod moves downwards, after the screw rod moves to a certain degree, one end of the lower limit displacement moving rod 16 is in contact with the ejector rod 14, along with the continuous movement of the upper portion 2 of the screw rod, the lower limit displacement moving rod 16 is pushed towards the direction of the lower limit spring 26 by the ejector rod 14, the slope 20 slowly contacts with the lower limit switch salient point 17, the lower limit displacement moving rod 16 continues to be pushed towards the direction of the lower limit spring 26 by the ejector rod 14, the lower limit switch salient point 17 reaches the wide portion 18 along the slope 20, the lower limit switch salient point 17 is pressed downwards through the wide portion 18, the switch is powered off, the screw rod reaches the lowest point, the lower limit spring 26 is compressed to the minimum, and the lifting platform stops lifting.
The utility model discloses there are two kinds of modes to the installation that the pole 16 was moved in the lower limit displacement: 1. the upper base body 21 is provided with a through hole (the utility model discloses do not mark in the drawing), and when lower limit switch was closed, the tip of lower limit displacement pole 16 stretched out the through hole outside. 2. When the switch is turned on, the end of the lower limit displacement moving rod 16 has a certain distance from the upper seat body 21, and when the switch is turned off, one end of the lower limit displacement moving rod 16 pushes against the upper seat body 21 along with the movement of the lower limit displacement moving rod 16.
The utility model has the screw rod with the upper limit switch and the lower limit switch, when the screw rod rises to the highest position, the upper limit contact piece 13 is pressed down through the pressure rod 10, the upper limit micro switch 12 can be effectively closed, the screw rod stops moving, and the lifting platform is prevented from rising again; when the screw rod descends to the lowest position, the lower limit microswitch 15 can be effectively closed by the abutting of the wide part 18 to the lower limit switch salient point 17, so that the screw rod stops moving and the lifting platform is prevented from descending again.
The utility model discloses well lead screw lower part 3 is equipped with the internal thread (the utility model discloses do not mark in the drawing), the external screw thread and the internal thread engagement of threaded rod 1. The second gear 5 is externally connected with a driving device, the first gear 4 is driven to rotate by driving the second gear 5, so that the up-and-down movement of the threaded rod 1 is realized,
the utility model discloses simple structure, sensitivity height, fault rate are almost zero, for realizing that lift platform's stable goes up and down and effectively spacing make the contribution.
The above embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention made by using the above inventive concept shall fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a lead screw with go up limit switch and limit switch down which characterized in that: the screw rod comprises a screw rod upper part and a screw rod lower part which are connected through a screw rod, wherein a first gear and a second gear are mounted at the end part of the screw rod and are meshed; the lead screw is provided with an upper limit switch and a lower limit switch, the upper limit switch comprises a blocking piece, an upper limit switch assembly and a sliding seat, the blocking piece is provided with a groove, the sliding seat is provided with an upper limit displacement moving rod and a pressing rod, the upper limit displacement moving rod extends into the groove, and the end part of the upper limit displacement moving rod is provided with an upper limit body; the upper limit switch assembly comprises an upper limit microswitch, the upper limit microswitch is provided with an upper limit contact piece, and the pressure rod is positioned above the upper limit contact piece; lower limit switch includes ejector pin and lower limit switch subassembly, lower limit switch subassembly includes that lower limit micro-gap switch moves the pole with lower limit displacement, lower limit micro-gap switch is equipped with down the limit switch bump, lower limit displacement moves the pole and is provided with wide portion and narrow part, connect through the slope between wide portion and the narrow part.
2. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 1, wherein: the upper part of the screw rod is provided with an upper seat body, the lower part of the screw rod is provided with a lower seat body, the upper limit switch assembly, the lower limit switch assembly and the sliding seat are arranged on the upper seat body, and the blocking piece and the ejector rod are arranged on the lower seat body; the upper limit switch assembly, the sliding seat and the blocking piece are located on one side of the screw rod, and the lower limit switch assembly and the ejector rod are located on the other side of the screw rod.
3. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 2, wherein: the upper seat body is provided with a fixed seat, and the upper limit microswitch is arranged on the fixed seat.
4. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 1, wherein: the end part of the upper limit displacement moving rod is provided with an upper limit spring, and the upper limit spring is positioned between the fixed seat and the sliding seat.
5. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 1, wherein: the lower part of the screw rod is provided with a slide rail, and the upper limit displacement moving rod slides in the slide rail.
6. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 1, wherein: the lower limit displacement moving rod is provided with a lower limit spring.
7. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 2, wherein: the lower limit displacement moving rod is provided with a lower limit body, and the lower limit displacement moving rod moves in the lower limit body.
8. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 7, wherein: the lower retainers are two, and the wide portion and the narrow portion are located between the two lower retainers.
9. The lead screw having an upper limit switch and a lower limit switch as set forth in claim 2, wherein: the upper seat body is provided with a through hole, and when the lower limit switch is closed, the end part of the lower limit displacement moving rod extends out of the outer side of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120501434.5U CN218879341U (en) | 2021-03-09 | 2021-03-09 | Screw rod with upper limit switch and lower limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120501434.5U CN218879341U (en) | 2021-03-09 | 2021-03-09 | Screw rod with upper limit switch and lower limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218879341U true CN218879341U (en) | 2023-04-18 |
Family
ID=85977107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120501434.5U Active CN218879341U (en) | 2021-03-09 | 2021-03-09 | Screw rod with upper limit switch and lower limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218879341U (en) |
-
2021
- 2021-03-09 CN CN202120501434.5U patent/CN218879341U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218879341U (en) | Screw rod with upper limit switch and lower limit switch | |
| CN100474740C (en) | Line handspike motor | |
| CN112897394A (en) | Lead screw with upper limit switch and lower limit switch | |
| CN218665235U (en) | Lead screw with lower limit switch | |
| CN112875573A (en) | Lead screw with upper limit switch | |
| CN112897395A (en) | Lead screw with lower limit switch | |
| CN218539165U (en) | Upper limit switch for lead screw | |
| CN218525476U (en) | Lower limit switch for lead screw | |
| CN109515695B (en) | Handle mechanism of lifting rotary trigger switch | |
| CN112908740A (en) | Lower limit switch for lead screw | |
| CN112897397A (en) | Upper limit switch for lead screw | |
| CN214828163U (en) | Electronic safety gear trigger of elevator | |
| CN216364371U (en) | Sliding gear engaging mechanism | |
| CN209962929U (en) | Self-locking type manual button | |
| CN208608073U (en) | A kind of switching switch moving contact head component | |
| CN219917763U (en) | Electrical plug connector for electrical engineering | |
| CN111935378B (en) | Semi-automatic camera elevating system and electronic equipment | |
| CN201205651Y (en) | Piston ring assembling apparatus | |
| CN115106735B (en) | Buckle cover feeding device of electric component bearing box | |
| CN109491448B (en) | Electric automatization control cabinet | |
| CN220086437U (en) | Suction type terminal connection structure | |
| CN220253095U (en) | Intelligent voltage-regulating power adapter | |
| CN115106734B (en) | Assembling process for buckling cover of electric component bearing box | |
| CN217535321U (en) | Single-drive connecting rod structure with lifting and moving functions | |
| CN114336166B (en) | Fool-proof wire connector capable of being inserted and pulled out intelligently and rapidly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |