CN2073409U - Safety protecting device for upper and lower limit position of cran lift hook - Google Patents
Safety protecting device for upper and lower limit position of cran lift hook Download PDFInfo
- Publication number
- CN2073409U CN2073409U CN 90209507 CN90209507U CN2073409U CN 2073409 U CN2073409 U CN 2073409U CN 90209507 CN90209507 CN 90209507 CN 90209507 U CN90209507 U CN 90209507U CN 2073409 U CN2073409 U CN 2073409U
- Authority
- CN
- China
- Prior art keywords
- conducting ring
- switch
- garden
- hook
- cutoff
- 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.)
- Withdrawn
Links
Images
Abstract
The utility model relates to a safety protecting device for upper and lower limit position of s crane lift hook, comprising a control switch assembled by the upper and lower limit position of the lift hook, a rotary switch for displaying the height of the hook and an electric control system. The utility model is characterized in that the control switch assembled by the upper and lower limit position and the rotary switch for displaying the height of the hook are replaced by a uniaxial multichannel sliding rotary switch which is driven by a hoist shaft or a retarding mechanism to rotate and is composed of a rotary disk (2) fixed with a rotary shaft (3) which is penetrated through the shaft hole (9) of the center of a circle, a locking bar (4) fixed on the rotary disk (2), a compulsory bar (5), the sliding contact of an indicating bar (6) and an insulating disk (1) whose surface is inlaid with concentric opening conducting rings (10), (11), (12) and (13) and a plurality of electrode nails (14).
Description
The utility model relates to a kind of upper and lower limit safety guard that is used for hoisting crane, particularly bridge-type or gantry crane suspension hook.
88213910 " crane hook multifunctional safe fender guards " of inventor's application have adopted the worm and gear that is linked together with the elevator axle to pay the drive cam follower; make the step collision block in upper and lower spacing time action; promote combination of travel switch and move by setup program, prevent suspension hook roof fall and steel rope back-roll thereby reach.This safety device is to convert rotatablely moving of elevator axle to straight-line motion to promote combination of travel switch, so, working accuracy and setting accuracy to cam follower, step collision block and bearing thereof are had relatively high expectations, thereby make interchangeability of parts poor, component of machine and electrical bond are not compact, the height under hook telltale can only show height change by the rotor switch control that a worm screw drives in addition, only reports to the police to the operator with sound when the upper and lower limit position.
The purpose of this utility model is to provide a kind of upper and lower spacing safety guard that is directly rotated the crane hook that drives by the elevator axle.
The upper and lower spacing safety guard of crane hook comprises suspension hook upper and lower limit bit pattern master cock, the rotor switch and the electric control system that show height under hook, it is characterized in that upper and lower limit bit pattern master cock and show that the rotor switch of height under hook is substituted by single shaft multiple tracks slip rotor switch, single shaft multiple tracks slip rotor switch is by the elevator axle or through the speed reduction gearing driven rotary; Single shaft multiple tracks slip rotor switch by with the fixing rotating disc (2) of S. A. (3), be fixed on locking lever (4) on the rotating disc (2), force bar (5), the slider of indicator stem (6), S. A. (3) the garden heart of passing to have to be embedded with on axis hole (9) and the card concentric opening conducting ring (10), insolator disc (1) that (11), (12), (13) and N utmost point are followed closely (14) form.
Suspension hook electric machine spacing conducting ring (10), (11) are arranged on the insolator disc (1), and suspension hook electric machine spacing conducting ring (10), (11) are connected in the suspension hook motor control loop, and form limit switch K by locking lever (4) contact conducting
1, force bar (5) and cutoff conducting ring (12) or warning conducting ring (13) moving contact to form alarm switch K
2, the concentric and same footpath of cutoff conducting ring (12) and warning conducting ring (13).Force bar (5) to link to each other with ground, one end of cutoff contactless switch (TCJ) is connected with power supply, the other end by cutoff conducting ring (12) with force bar (5) to link to each other with ground, between this end of cutoff contactless switch (TCJ) and ground wire, be parallel with rest button switch (K
2).Rest button switch (K
2) form by reset lever (7) and spring leaf (8), spring leaf (8) is connected reset lever (7) and indicator stem (6), reset lever (7) when pressing with cutoff conducting ring (12) connection.One end of motor siren (DDJ) is connected with an end of upper and lower spacing indicator lamp (UD, DD), the other end of upper limit indicator lamp (UD) is connected with warning conducting ring (13), the other end of lower limit indicator lamp (DD) is followed closely with the initial utmost point on the insolator disc and is linked to each other each suspension hook winding around indicator lamp (ND
1～ND
N) an end and insolator disc on corresponding utmost point nail is linked to each other, the other end is parallel with one another and link to each other with the mouth of indicator lamp voltage transformer (B).
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is single shaft multiple tracks slip rotary switch structure figure.
Fig. 2 is the front elevation that is embedded with opening conducting ring insolator disc.
Fig. 3 is electric control circuit figure.
On the different radii of rotating disc (2), be fixed with locking lever (4), force bar (5), indicator stem (6), locking lever (4) contacts (10,11) with its connection with inside and outside spacing conducting ring, when suspension hook upper and lower when spacing, it (is K that locking lever (4) disengages with inside and outside spacing conducting ring (10), (11)
1Disconnect).Fig. 1 represents is with locking lever (4), force bar (5), the sight of indicator stem (6) when being fixed on same diameter, cooresponding therewith in spacing conducting ring (11) opening fan-shaped and outer spacing conducting ring (10) opening that the garden is formed centrally fan-shaped heart angle, garden that the garden is formed centrally identical and two fan-shaped overlapping; The fan-shaped heart angle, garden that the heart angle, fan-shaped garden that cutoff conducting ring (12) opening is formed centrally the garden is formed centrally the garden less than inside and outside spacing conducting ring (10,11) opening, fan-shaped overlapping and axis of symmetry coincidence.The rest button switch is made up of spring leaf (8) and the reset lever (7) that is fixed on the rotating disc (2).
When suspension hook rose to the limes superiors position, it (was K that locking lever (4) disengages with inside and outside spacing conducting ring (10), (11)
1Disconnect), suspension hook motor rising control loop outage at this moment, suspension hook rises and stops automatically, and this is the first order protection of this device; If because of a variety of causes, first order protection is malfunctioning, and suspension hook continues to rise, and forcing bar (5) to connect warning conducting ring (13) (is K
3Put the b position), electric whistle (DDJ) powers alarm, meanwhile, steel rope twines number of turns indicator lamp (ND) and indicates that steel rope twines the number of turns on the elevator on the monitor, upper limit indicator lamp (UD) light to people demonstrate carry caution symbol " ↑ " and "! ", the operative employee should do emergency handling, and if be untreated, suspension hook will continue to rise, and cutoff contactless switch (TCJ) will cut off the power supply and cut off elevator motor (N) main power source fully, and forced interruption prevents serious accident to take place.Electric whistle this moment (DDJ) will continue to report to the police, and pending fault makes reset switch (K by reset lever (7) after getting rid of
2) connect, recover the power supply of elevator motor (N).
When suspension hook dropped to the smallest limit position, it (was K that locking lever (4) disengages with inside and outside spacing conducting ring (10), (11)
1Disconnect), suspension hook motor control loop outage at this moment, suspension hook descends and stops automatically; If because of a variety of causes, suspension hook continues to descend, and forcing bar (5) to connect the warning conducting ring (is K
3Put the b position), electric whistle (DDJ) powers alarm, meanwhile, steel rope twines indicator lamp (ND) and indicates that steel rope twines the number of turns on the elevator on the monitor, lower limit indicator lamp (DD) light to people demonstrate carry caution symbol " ↓ " and "! ", the operative employee should be stopped as early as possible, and if be untreated, suspension hook will continue to descend, and cutoff contactless switch (TCJ) will cut off the power supply and cut off elevator motor (N) main power source fully, and forced interruption prevents the generation of accident.
Claims (2)
1, a kind of upper and lower spacing safety guard that is used for hoisting crane, particularly bridge-type or gantry crane suspension hook, comprise suspension hook upper and lower limit bit pattern master cock, the rotor switch and the electric control system that show height under hook, it is characterized in that upper and lower limit bit pattern master cock and show that the rotor switch of height under hook is substituted by single shaft multiple tracks slip rotor switch, single shaft multiple tracks slip rotor switch is by the elevator axle or through the speed reduction gearing driven rotary; Single shaft multiple tracks slip rotor switch by with the fixing rotating disc (2) of S. A. (3), be fixed on locking lever (4) on the rotating disc (2), force bar (5), the slider of indicator stem (6), S. A. (3) to pass to be embedded with on garden arbor hole (9) and the card concentric opening conducting ring (10), insolator disc (1) that (11), (12), (13) and N utmost point are followed closely (14) form; Suspension hook electric machine spacing conducting ring (10), (11) are arranged on the insolator disc (1), and suspension hook electric machine spacing conducting ring (10), (11) are connected in the suspension hook motor control loop, and form limit switch K by locking lever (4) contact conducting
1, force bar (5) and cutoff conducting ring (12) or warning conducting ring (13) moving contact to form alarm switch K
3, the concentric and same footpath of cutoff conducting ring (12) and warning conducting ring (13).Force bar (5) to link to each other with ground, an end of cutoff contactless switch (ICJ) is connected with power supply, and the other end links to each other with ground with pressure bar (5) by cutoff conducting ring (12), is parallel with rest button switch (K between this end of cutoff contactless switch (ICJ) and ground wire
2).One end of motor siren (DDJ) is connected with an end of upper and lower spacing indicator lamp (DD, DD), the other end of upper limit indicator lamp (DD) is connected with warning conducting ring (13), the other end of lower limit indicator lamp (DD) is followed closely with the initial utmost point on the insolator disc and is linked to each other each suspension hook winding around indicator lamp (ND
1～ND
N) an end and insolator disc on corresponding utmost point nail (14) link to each other, the other end is parallel with one another and link to each other with the mouth of indicator lamp voltage transformer (B).
2, the upper and lower spacing safety guard of crane hook according to claim 1 is characterized in that being fixed with locking lever (4) on the different radii of rotating disc (2), forcing bar (5), indicator stem (6), and is fixed on same diameter; In spacing conducting ring (11) opening fan-shaped and outer spacing conducting ring (10) opening that the garden is formed centrally fan-shaped heart angle, garden that the garden is formed centrally identical and two fan-shaped overlapping; The fan-shaped heart angle, garden that the heart angle, fan-shaped garden that cutoff conducting ring (12) opening is formed centrally the garden is formed centrally the garden less than inside and outside spacing conducting ring opening, fan-shaped overlapping and axis of symmetry coincidence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209507 CN2073409U (en) | 1990-06-30 | 1990-06-30 | Safety protecting device for upper and lower limit position of cran lift hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209507 CN2073409U (en) | 1990-06-30 | 1990-06-30 | Safety protecting device for upper and lower limit position of cran lift hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2073409U true CN2073409U (en) | 1991-03-20 |
Family
ID=4889566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90209507 Withdrawn CN2073409U (en) | 1990-06-30 | 1990-06-30 | Safety protecting device for upper and lower limit position of cran lift hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2073409U (en) |
-
1990
- 1990-06-30 CN CN 90209507 patent/CN2073409U/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200047006A1 (en) | Methods and Apparatus for Generating Energy Using Fall Protection Devices | |
| CN112172982A (en) | Automatic speed reduction device for overspeed shared electric bicycle | |
| CN102826437A (en) | Device for recording and monitoring running of staircase | |
| CN201412057Y (en) | Portable electric tool ladder | |
| US10163334B1 (en) | Wireless remote control system for a vacuum material handler | |
| CN105883519A (en) | Method and system for managing elevator safety | |
| CN113044743B (en) | Winch and pedestrian safety power-off locking alarm method thereof | |
| CN2073409U (en) | Safety protecting device for upper and lower limit position of cran lift hook | |
| CN103268846A (en) | Power-driven operation device | |
| CN109368518A (en) | The anti-dismounting tower crane monitoring system of total failure self-test | |
| CN211472298U (en) | Public security monitoring alarm device | |
| CN114159708A (en) | Communication tower with anti-falling device | |
| CN205739833U (en) | Teeth belt type depth indicator | |
| CN213569207U (en) | Lifting height limiter | |
| CN207654558U (en) | A kind of high intensity lifeline tool with multiple protection functions | |
| CN202529780U (en) | Inhaul cable type indoor lifting layer | |
| CN206091488U (en) | Simple and easy lift type mechanical parking device's anti -falling device | |
| CN206901648U (en) | Electric travelling crane hoisting mechanism braking ability early warning system | |
| CN2172274Y (en) | Hoister overheight limiter | |
| CN205687343U (en) | A kind of construction hoist falling-proof insurance system | |
| CN216272602U (en) | Elevator diverting pulley safety arrangement | |
| CN2035745U (en) | Multi-function safety device for crane hook | |
| CN201569562U (en) | Synchronous lifting detection device for cross beams | |
| CN215844910U (en) | Safety protection device for wire drawing machine | |
| CN211444772U (en) | Intelligent alarm system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |