CN203545578U - Jack with limit switch - Google Patents
Jack with limit switch Download PDFInfo
- Publication number
- CN203545578U CN203545578U CN201320759814.4U CN201320759814U CN203545578U CN 203545578 U CN203545578 U CN 203545578U CN 201320759814 U CN201320759814 U CN 201320759814U CN 203545578 U CN203545578 U CN 203545578U
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- CN
- China
- Prior art keywords
- worm
- travel switch
- lead screw
- jack
- switch
- 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 - Lifetime
Links
- 230000033001 locomotion Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The utility model relates to a jack with a limit switch. The jack with the limit switch comprises a worm and worm wheel mechanism and a lead screw, wherein the worm and worm wheel mechanism and the lead screw are arranged inside an outer shell; a worm wheel of the worm and worm wheel mechanism is coaxially connected with the lead screw in series; a worm of the worm and worm wheel mechanism is externally connected with an input motor; the upper portion of the outer shell is provided with an upper travel switch and a lower travel switch; a stop dog which penetrates through the outer shell and is connected with the head of the lead screw is arranged between the upper travel switch and the lower travel switch; the stop dog makes contact with or is separated from the upper travel switch and the lower travel switch. When the motor drives the worm and worm wheel mechanism to drive the lead screw to vertically move, as the stop dog connected to the lead screw makes contact with the upper travel switch and the lower travel switch, the travel switches feed signals back to the input motor and control the input motor to stop rotating or rotate reversely, and abrasion caused by over-travel movement of the lead screw is prevented effectively; by adjusting the space between the upper travel switch and the lower travel switch to set the travel of the lead screw, the application range is wide, and the jack with the limit switch is simple in structure, low in cost and easy to operate.
Description
Technical field
The utility model relates to a kind of jack, is specifically related to a kind of jack with limit switch.
Background technology
Jack is a kind of lifting the simplest highly little weight-lifting equipment.Generally comprise and be divided into four kinds of rack-jack, lifting screw and hydraulic jack and Inflated jacks.The not only complex structure of hydraulic jack and Inflated jack, use procedure is more loaded down with trivial details, each hydraulic unit processed complex simultaneously, productive costs is higher, and all lacks actv. position control function.
Summary of the invention
The purpose of this utility model is to provide a kind of jack with position control function.
The technical scheme that the utility model is taked is:
A kind of jack with limit switch, comprise the worm-and-wheel gear and the screw mandrel that are arranged in shell, the worm gear of described worm-and-wheel gear is coaxially connected in series with screw mandrel, the external input motor of worm screw of described worm-and-wheel gear, described shell upper is provided with upper stroke switch and lower stroke switch, between described upper stroke switch and lower stroke switch, be provided with the block being connected with screw mandrel head through shell, between described block and upper stroke switch and lower stroke switch, be and contact or released state.
Further, described upper stroke switch is connected with input motor respectively with lower stroke switch.
Again further, the spacing between described upper stroke switch and lower stroke switch is adjustable.
Adopt the beneficial effect reaching after above technical scheme to be: when motor drives worm-and-wheel gear, to drive screw mandrel up-and-down movement, by the block being connected on screw mandrel, contact with upper and lower stroke switch respectively, travel switch feedback signal is to inputting motor, control inputs motor stalling or reversion, effectively prevent screw mandrel over travel motion and cause wearing and tearing; By the spacing between adjustment upper stroke switch and lower stroke switch, set the stroke of screw mandrel, applied widely, and this jack structure is simple, and cost is low, simple to operate.
Accompanying drawing explanation
Fig. 1 is main cutaway view of the present utility model.
In figure: screw mandrel 1, worm screw 2, worm gear 3, upper stroke switch 4, lower stroke switch 5, block 6, bearing 7, shell 8.
The specific embodiment
Of the present utility model being embodied as:
With a jack for limit switch, comprise screw mandrel 1, worm screw 2, worm gear 3, upper stroke switch 4, lower stroke switch 5, block 6, bearing 7 and shell 8.Described screw mandrel 1 and worm gear 3 be coaxial is connected in series cooperation, worm gear 3 top and the bottom by a bearing 7, be connected in shell 8 respectively and with worm screw 2 engaged transmission, screw mandrel head is connected with block 6, block 6 stretches out shell 8 outsides, on shell, be provided with upper stroke switch 4 and lower stroke switch 5, block 6 is up-and-down movement between upper stroke switch 4 and lower stroke switch 5.
Its principle of work is, will be positioned over the jack of limit switch band upholder below, starts input motor, and motor drives worm screw 2, drives worm gear 3 to rotate, and the screw mandrel coordinating with worm gear 3 rotates and up-and-down movement, by thing jack-up to be supported or put down.Screw mandrel 1 is in up-and-down movement process, and when the block 6 connecting on screw mandrel 1 touches upper stroke switch 4 or lower stroke switch 5, described upper stroke switch 4 or lower stroke switch 5 control inputs motors stop or reversing, and realize Stroke Control.
When treating the support stroke of upholder, have while accurately requiring, the position that only needs to adjust upper stroke switch 4 on shell 8 or lower stroke switch 5 can realize.
Claims (3)
1. the jack with limit switch, comprise the worm-and-wheel gear and the screw mandrel that are arranged in shell, the worm gear of described worm-and-wheel gear is coaxially connected in series with screw mandrel, the external input motor of worm screw of described worm-and-wheel gear, it is characterized in that, described shell upper is provided with upper stroke switch and lower stroke switch, between described upper stroke switch and lower stroke switch, be provided with the block being connected with screw mandrel head through shell, between described block and upper stroke switch and lower stroke switch, be and contact or released state.
2. a kind of jack with limit switch according to claim 1, is characterized in that, described upper stroke switch is connected with input motor respectively with lower stroke switch.
3. a kind of jack with limit switch according to claim 1, is characterized in that, the spacing between described upper stroke switch and lower stroke switch is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759814.4U CN203545578U (en) | 2013-11-28 | 2013-11-28 | Jack with limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759814.4U CN203545578U (en) | 2013-11-28 | 2013-11-28 | Jack with limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203545578U true CN203545578U (en) | 2014-04-16 |
Family
ID=50463725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320759814.4U Expired - Lifetime CN203545578U (en) | 2013-11-28 | 2013-11-28 | Jack with limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203545578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693581A (en) * | 2013-11-28 | 2014-04-02 | 江苏泰隆减速机股份有限公司 | Jack with limiting switch |
| CN110304577A (en) * | 2019-06-21 | 2019-10-08 | 浙江神阳机电科技有限公司 | It is a kind of to change the outfit the lifting device of hoistable platform for battery |
-
2013
- 2013-11-28 CN CN201320759814.4U patent/CN203545578U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693581A (en) * | 2013-11-28 | 2014-04-02 | 江苏泰隆减速机股份有限公司 | Jack with limiting switch |
| CN110304577A (en) * | 2019-06-21 | 2019-10-08 | 浙江神阳机电科技有限公司 | It is a kind of to change the outfit the lifting device of hoistable platform for battery |
| CN110304577B (en) * | 2019-06-21 | 2023-10-20 | 浙江神阳机电科技有限公司 | Lifting device for be used for battery to trade dress lift platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |