CN202704983U - Anti-dropping safety device capable of automatically detecting - Google Patents
Anti-dropping safety device capable of automatically detecting Download PDFInfo
- Publication number
- CN202704983U CN202704983U CN 201220378096 CN201220378096U CN202704983U CN 202704983 U CN202704983 U CN 202704983U CN 201220378096 CN201220378096 CN 201220378096 CN 201220378096 U CN201220378096 U CN 201220378096U CN 202704983 U CN202704983 U CN 202704983U
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- CN
- China
- Prior art keywords
- pressing plate
- guide rail
- column guide
- safety device
- electromagnet
- 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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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model provides an anti-dropping safety device capable of automatically detecting, comprising a pressing plate hinged with a support, wherein an electromagnet is arranged at one end of the pressing plate; the electromagnet is connected with an electric control system; a hole is arranged at the other end of the pressing plate and a stand column guide rail is arranged in the hole; the stand column guide rail can slide vertically in the hole; the stand column guide rail is provided with a magnetic grid ruler and the magnetic grid ruler is provided with a measuring head; a slide channel is arranged at the outer side of the stand column guide rail at the lower part of the pressing plate through a bracket; a wedge-shaped slide block is arranged between the slide channel and the stand column guide rail; and a spring is arranged between the lower end of the wedge-shaped slide block and the bracket. The anti-dropping safety device has the advantages that structural arrangement is reasonable, impact on a machine body is effectively reduced and permanent deformation on the structure is not caused; the anti-dropping safety device has wide practical applicability and can be suitable for hoisting platforms of a steel wire rope type, a chain type, a screw rod type and the like; and the anti-dropping safety device has a power-off protection function and can still be safely self-locked after power is off.
Description
Technical field
The utility model relates to a kind of automatic detection anti-falling safe self-locking device, is used for lifting table when lifting process hoisting rope fracture, changes by detection speed, and safety arrestment lifting table effectively prevents that platform from falling automatically.
Background technology
Existing lifting table falling-proof safety device is insert block type (or pawl type) rope-breaking safe device normally.Most at the omnidistance framework (or ratchet) of arranging of guide rail, the inserted block of installation activity on lifting table (or ratchet support) and spring, gravity when utilizing lifting table to be promoted (tension on the hoisting cable) makes inserted block (or ratchet support) separate with framework (or ratchet), tension during disconnected rope on the steel rope disappears, spring ejects inserted block (or ratchet support) rapidly, be stuck on the framework (or ratchet) instantaneous braking lifting table.This huge impulsive force easily deforms inserted block (or ratchet support) and framework (or ratchet), and platform is caused larger impact.Lifting table suspension centre position is subject to the installation site of inserted block (or ratchet) and framework (or ratchet), and is confined to the lifting table of steel wire rope type, and is then inapplicable for the lifting table of other forms (as: chain-type, screw-type).
Summary of the invention
That technical problem to be solved in the utility model is that the deficiency that exists for above-mentioned existing turning device and a kind of structure that provides arrange is reasonable, safe and reliable, reduce and impact and unnecessary distortion and practicality detects the anti-falling safe self-locking device more widely automatically.
The purpose of this utility model is achieved in that
A kind of automatic detection falling-proof safety device, it comprises the pressing plate that is hinged on the bearing, pressing plate one end is provided with electromagnet, electromagnet connects electric control system, the other end of pressing plate is provided with the hole, be provided with column guide rail in the hole, pressing plate can slide up and down along column guide rail, column guide rail is provided with magnetic railings ruler, magnetic railings ruler is provided with measuring head, the pressing plate bottom is positioned at the column guide rail outside and is provided with slideway by support, is provided with wedge block between slideway and the column guide rail, is provided with spring between wedge block lower end and the support.
Above-mentioned electromagnet is arranged on the top of pressing plate, after the electromagnet energising pressing plate is produced attractive force.
The utility model has been obtained following technique effect:
The utility model structure arranges rationally, can effectively reduce the impact to body, also can not cause permanent distortion to structure; Practicality is wide, can be applicable to the lifting tables such as steel wire rope type, chain-type, screw-type; Have power-off protection function, after the outage, still can safe self-locking.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present utility model.
The specific embodiment
A kind of automatic detection falling-proof safety device as shown in Figure 1, it comprises the pressing plate 4 that is hinged on the bearing 10, pressing plate one end is provided with electromagnet 8, electromagnet connects electric control system 9, the other end of pressing plate is provided with hole 11, be provided with column guide rail 3 in the hole, pressing plate can slide up and down along column guide rail, column guide rail is provided with magnetic railings ruler 1, magnetic railings ruler is provided with measuring head 2, the pressing plate bottom is positioned at the column guide rail outside and is provided with slideway 6 by support 12, is provided with wedge block 5 between slideway and the column guide rail, is provided with spring 7 between wedge block lower end and the support.Described electromagnet is arranged on the top of pressing plate, after the electromagnet energising pressing plate is produced attractive force.
The column guide rail 3 omnidistance upper magnetic railings rulers 1 of installing, measuring head 2 is used in conjunction with magnetic railings ruler, detects the kinematic velocity of lifting table.Determine the safe operation speed of lifting table according to actual requirement, and this velocity amplitude is set to the trigger point in the electric control system 9.
When the velocity amplitude that detects is less than or equal to safety movement speed, electric control system 9 judges that lifting table is in the normal operation mode of operation, at this moment, the coil electricity of electric control system control electromagnet 8, produce enough suction, hold pressing plate 4, the other end of pressing plate is with Compress Spring 7, and make between wedge block 5 and the slideway 6 and keep certain interval, guarantee the lifting table normal operation.
When the velocity amplitude that detects during greater than safety movement speed, electric control system 9 judges that lifting tables are in the abnormal running mode of operation (or wire cable rupture, or chain breakage, or screw mandrel lost efficacy), at this moment, the coil blackout of electric control system control electromagnet 8, electromagnetic attraction disappears, and pressing plate 4 loosens, spring 7 is by compression released wedge block 5, make between column guide rail 3 and the slideway 6 to compress by wedge block, utilize the auto-lock function of wedge block, prevent to fall.
When lifting platform system opened circuit, the coil of electromagnet 8 also cut off the power supply, and electromagnetic attraction disappears, pressing plate 4 loosens, and spring 7 is by compression released wedge block 5, makes between column guide rail 3 and the slideway 6 to compress by wedge block 5, utilize the auto-lock function of wedge block, prevent to fall.
This reaction time of automatically detecting the anti-falling safe self-locking device can be by calculating accurately control, and brake safe is reliable, good stability.
Claims (2)
1. one kind is detected falling-proof safety device automatically, it is characterized in that: it comprises the pressing plate (4) that is hinged on the bearing (10), pressing plate one end is provided with electromagnet (8), electromagnet connects electric control system (9), the other end of pressing plate is provided with hole (11), be provided with column guide rail (3) in the hole, pressing plate can slide up and down along column guide rail, column guide rail is provided with magnetic railings ruler (1), magnetic railings ruler is provided with measuring head (2), the pressing plate bottom is positioned at the column guide rail outside and is provided with slideway (6) by support (12), is provided with wedge block (5) between slideway and the column guide rail, is provided with spring (7) between wedge block lower end and the support.
2. automatic detection falling-proof safety device according to claim 1, it is characterized in that: described electromagnet is arranged on the top of pressing plate, after the electromagnet energising pressing plate is produced attractive force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220378096 CN202704983U (en) | 2012-07-31 | 2012-07-31 | Anti-dropping safety device capable of automatically detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220378096 CN202704983U (en) | 2012-07-31 | 2012-07-31 | Anti-dropping safety device capable of automatically detecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202704983U true CN202704983U (en) | 2013-01-30 |
Family
ID=47585307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220378096 Expired - Fee Related CN202704983U (en) | 2012-07-31 | 2012-07-31 | Anti-dropping safety device capable of automatically detecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202704983U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185750A (en) * | 2016-08-16 | 2016-12-07 | 太原重型机械集团工程技术研发有限公司 | Elevator and derricking gear thereof |
| CN106804098A (en) * | 2015-11-26 | 2017-06-06 | 富泰华工业（深圳）有限公司 | Automatic anti-dropping dropping control device and the electronic installation with automatic anti-dropping drop |
| CN108483328A (en) * | 2018-05-17 | 2018-09-04 | 浙江工业大学 | Follow-up detection protection device for lifting platform |
| CN110937548A (en) * | 2019-12-05 | 2020-03-31 | 苏州中瑞升降机械有限公司 | Guide rail mechanism and hydraulic lifting platform thereof |
-
2012
- 2012-07-31 CN CN 201220378096 patent/CN202704983U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106804098A (en) * | 2015-11-26 | 2017-06-06 | 富泰华工业（深圳）有限公司 | Automatic anti-dropping dropping control device and the electronic installation with automatic anti-dropping drop |
| CN106185750A (en) * | 2016-08-16 | 2016-12-07 | 太原重型机械集团工程技术研发有限公司 | Elevator and derricking gear thereof |
| CN108483328A (en) * | 2018-05-17 | 2018-09-04 | 浙江工业大学 | Follow-up detection protection device for lifting platform |
| CN110937548A (en) * | 2019-12-05 | 2020-03-31 | 苏州中瑞升降机械有限公司 | Guide rail mechanism and hydraulic lifting platform thereof |
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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: 20130130 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |