CN104876115A - Self-locking type unhooking prevention device - Google Patents
Self-locking type unhooking prevention device Download PDFInfo
- Publication number
- CN104876115A CN104876115A CN201510281551.4A CN201510281551A CN104876115A CN 104876115 A CN104876115 A CN 104876115A CN 201510281551 A CN201510281551 A CN 201510281551A CN 104876115 A CN104876115 A CN 104876115A
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- CN
- China
- Prior art keywords
- hook
- suspension hook
- self
- safety
- positioning plate
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The invention discloses a self-locking type unhooking prevention device and relates to the technical field of lifting tool manufacture. The device comprises two limit plate portions and L-shaped safety protection plates formed through a baffle portion; the safety protection plates are arranged on two sides of a hook correspondingly, and the connection of the limit plate portions and the baffle portion is hinged to the hook through a hinging shaft penetrating the hook handle; the limit plate portions are connected through a safety pin, the safety pin is connected to the back of the hook in an abutted manner, and the free ends of the baffle portion are adjacent to the tip of the hook and baffle the opening of the hook. Compared with the prior art, the device has the advantages that a whole enclosure structure is formed by connecting the safety protection plates through the hinging shaft and the safety pin, the whole strength of the device is improved, the weight of the limit plate portions is increased through the safety pin, the self-locking reset capability is improved, a baffling shaft installed on the tip of the hook is omitted, and assembling is simple and facilitated.
Description
Technical field
The present invention relates to hoisting sling manufacturing technology field, especially a kind of self-locking enclosed Anti-hook releasing device for crane hook.
Background technology
Carrying, hoisting large-size or heavy object time widely use hoisting crane, if the suspension hook of hoisting crane does not arrange Anti-hook releasing device, in handling process, hang the rope of weight or suspender likely from landing suspension hook, cause device damage or personnel casualty accidents.For guaranteeing safe lifting, usually on the suspension hook of hoisting crane, Anti-hook releasing device is installed, (patent No. is CN201713212U for the Chinese patent of " a kind of suspension hook with gravity type mousing-hook device " to have a name to be called, publication date is on January 19th, 2011), this a kind of suspension hook with gravity type mousing-hook device is included in coupler body and is equipped with one " L " shape safety stop lever away from the partial turn of bill, one end of safety stop lever coordinates with bill anticreep, the other end is provided with a pulling axis for coordinating with accessory appliances, pulling axis has and rotates relative to bill the extension departing from and coordinate to block during certain distance in safety stop lever with coupler body, the bill end of coupler body is provided with the backstop axle coordinated with the safety stop lever block rotated so far, bill is coordinated with one end anticreep of safety stop lever by this backstop axle.In use there is following deficiency in this Anti-hook releasing device: 1, this Anti-hook releasing device only uses a safety stop lever, and bulk strength is poor; (2) in suspension hook tip, backstop axle is installed, causes and difficulty is installed.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of self-locking enclosed Anti-hook releasing device, poor with the bulk strength solving existing Anti-hook releasing device, installs backstop axle in suspension hook tip, causes the problem of installing difficulty.
In order to solve the problem, the technical solution used in the present invention is: this self-locking enclosed Anti-hook releasing device, comprise the safety guard being made up of L shape positioning plate portion and baffle portion, two pieces of described safety guards are oppositely arranged on the both sides of suspension hook, and the junction of described positioning plate portion and described baffle portion is hinged by the jointed shaft and suspension hook being installed on suspension hook handle; Two described positioning plate portions are connected by safety pin, and described safety pin and suspension hook are carried on the back and abutted against, and the free end of two described baffle portion is near suspension hook point and block the opening of suspension hook.
In above-mentioned self-locking enclosed Anti-hook releasing device technical scheme, technical scheme can also be more specifically: on described jointed shaft, be set with locating bush, and the inner side of described locating bush and two pieces of described safety guards offsets.
Further, the lateral surface in described positioning plate portion is set to concaved circular cambered surface, and the arc radius R of described concaved circular cambered surface is: 300mm≤R≤400mm.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, two pieces of safety guards of the present invention are connected to form overall closed type structure by jointed shaft and safety pin, substantially increase the bulk strength of Anti-hook releasing device, safety pin adds the weight in positioning plate portion, due to Action of Gravity Field, safety pin is against suspension hook back all the time, improves self-locking return ability, make baffle portion and suspension hook point synthesize an actv. and link up with volume, constraint rope or suspender can not depart from suspension hook, and this Anti-hook releasing device does not need to install backstop axle in suspension hook tip, installs simple and convenient.When the power that baffle portion is outwards opened, position-limiting action just plays in safety pin and positioning plate portion, makes baffle portion seal the opening of suspension hook.
2, on jointed shaft, be set with locating bush, the inner side of locating bush and two pieces of safety guards offsets; Avoid two pieces of safety guards to produce when jointed shaft rotates and outside suspension hook to rub, extend the service life of safety guard.
3, the lateral surface in positioning plate portion is set to concaved circular cambered surface, and the arc radius R of concaved circular cambered surface is: 300mm≤R≤400mm; When hook or off-hook, avoid positioning plate portion and the pulley be arranged on suspension hook handle to produce and interfere, increase the opening degree of baffle portion and suspension hook point, improve hook and off-hook efficiency; The commonality of this Anti-hook releasing device is high, is specially adapted to the suspension hook with pulley in vehicling operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the birds-eye view of Fig. 1.
Fig. 4 is the schematic diagram that the safety guard of the embodiment of the present invention is in closed condition.
Fig. 5 is the schematic diagram that the safety guard of the embodiment of the present invention is in the first open mode.
Fig. 6 is the schematic diagram that the safety guard of the embodiment of the present invention is in the second open mode.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Embodiment 1
A kind of self-locking enclosed Anti-hook releasing device as shown in Figure 1, Figure 2, Figure 3 shows, comprise the safety guard being made up of L shape positioning plate portion 3 and baffle portion 1, two pieces of safety guards are oppositely arranged on the both sides of suspension hook 6, positioning plate portion 3 is hinged with suspension hook 6 by the jointed shaft 2 being installed on the front side hook eye of suspension hook handle with the junction of baffle portion 1, jointed shaft 2 is positioned at the overthe openings of suspension hook 6, jointed shaft 2 is set with locating bush 5, the inner side of locating bush 5 and two pieces of safety guards offsets, and jam nut is equipped with in the outside that jointed shaft 2 stretches out safety guard; Two positioning plate portions 3 are connected by safety pin 4, and safety pin 4 and suspension hook are carried on the back and abutted against, and safety pin 4 stretches out positioning plate portion 3 and tightens up with nut, and the lateral surface in positioning plate portion 3 is set to concaved circular cambered surface, and the arc radius R of concaved circular cambered surface is 400mm; The free end of two baffle portion 1 is near suspension hook point and block the opening of suspension hook 6.
When hook or off-hook, the external force that only needs one are less promotes baffle portion 1 and drives positioning plate portion 3 to rotate around jointed shaft 2, namely the opening of suspension hook 6 is easily opened, after hook or off-hook have operated, under the Gravitative Loads of positioning plate portion 3 and safety pin 4, safety pin 4 return and suspension hook are carried on the back and are abutted against, and baffle portion 1 forwards the aperture position blocking suspension hook 6 to, simple to operate, alleviate the labour intensity of workman; The lateral surface in positioning plate portion 3 is set to concaved circular cambered surface, avoids positioning plate portion 3 and the pulley 7 be arranged on suspension hook handle to produce and interferes, and increases baffle portion 1 and the opening degree of suspension hook point, improves hook and off-hook efficiency; The commonality of this Anti-hook releasing device is high, is specially adapted to the suspension hook with pulley in vehicling operation, as shown in Fig. 4, Fig. 5, Fig. 6.
Embodiment 2
The difference of the present embodiment and embodiment 1 is that the arc radius R of concaved circular cambered surface is 300mm.All the other features are identical with embodiment 1.
Claims (3)
1. a self-locking enclosed Anti-hook releasing device, comprise the safety guard being made up of L shape positioning plate portion (3) and baffle portion (1), it is characterized in that: two pieces of described safety guards are oppositely arranged on the both sides of suspension hook (6), described positioning plate portion (3) is hinged with suspension hook (6) by the jointed shaft (2) being installed on suspension hook handle with the junction of described baffle portion (1); Two described positioning plate portions (3) are connected by safety pin (4), and described safety pin (4) and suspension hook carry on the backs and abutted against, and the free end of two described baffle portion (1) is sharp and block the opening of suspension hook (6) near suspension hook.
2. self-locking enclosed Anti-hook releasing device according to claim 1, is characterized in that: on described jointed shaft (2), be set with locating bush (5), and described locating bush (5) offsets with the inner side of two pieces of described safety guards.
3. self-locking enclosed Anti-hook releasing device according to claim 1 and 2, is characterized in that: the lateral surface of described positioning plate portion (3) is set to concaved circular cambered surface, and the arc radius R of described concaved circular cambered surface is: 300mm≤R≤400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281551.4A CN104876115A (en) | 2015-05-28 | 2015-05-28 | Self-locking type unhooking prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281551.4A CN104876115A (en) | 2015-05-28 | 2015-05-28 | Self-locking type unhooking prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104876115A true CN104876115A (en) | 2015-09-02 |
Family
ID=53943846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510281551.4A Pending CN104876115A (en) | 2015-05-28 | 2015-05-28 | Self-locking type unhooking prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104876115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205460A (en) * | 2018-10-15 | 2019-01-15 | 江苏联峰能源装备有限公司 | A kind of crane hook Anti-hook releasing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3213508A (en) * | 1963-08-12 | 1965-10-26 | Vigerhed Rolf Vigelius | Safety device in load hooks |
| JPH0678383U (en) * | 1993-04-16 | 1994-11-04 | 新日本製鐵株式会社 | Wire escape prevention device for crane hook |
| CN201376837Y (en) * | 2009-04-01 | 2010-01-06 | 薛垂义 | Lever type lifting hook dropping prevention device |
| CN201473189U (en) * | 2009-07-16 | 2010-05-19 | 天津重钢机械装备股份有限公司 | Hook with dropping prevention mechanism |
| CN204022275U (en) * | 2013-12-27 | 2014-12-17 | 吴大文 | A kind of gravity suspension hook safety buckle |
| CN204689389U (en) * | 2015-05-28 | 2015-10-07 | 柳州钢铁股份有限公司 | Self-locking enclosed Anti-hook releasing device |
-
2015
- 2015-05-28 CN CN201510281551.4A patent/CN104876115A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3213508A (en) * | 1963-08-12 | 1965-10-26 | Vigerhed Rolf Vigelius | Safety device in load hooks |
| JPH0678383U (en) * | 1993-04-16 | 1994-11-04 | 新日本製鐵株式会社 | Wire escape prevention device for crane hook |
| CN201376837Y (en) * | 2009-04-01 | 2010-01-06 | 薛垂义 | Lever type lifting hook dropping prevention device |
| CN201473189U (en) * | 2009-07-16 | 2010-05-19 | 天津重钢机械装备股份有限公司 | Hook with dropping prevention mechanism |
| CN204022275U (en) * | 2013-12-27 | 2014-12-17 | 吴大文 | A kind of gravity suspension hook safety buckle |
| CN204689389U (en) * | 2015-05-28 | 2015-10-07 | 柳州钢铁股份有限公司 | Self-locking enclosed Anti-hook releasing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205460A (en) * | 2018-10-15 | 2019-01-15 | 江苏联峰能源装备有限公司 | A kind of crane hook Anti-hook releasing device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |