CN105480862A - Safety control switch for tower crane - Google Patents
Safety control switch for tower crane Download PDFInfo
- Publication number
- CN105480862A CN105480862A CN201511019254.9A CN201511019254A CN105480862A CN 105480862 A CN105480862 A CN 105480862A CN 201511019254 A CN201511019254 A CN 201511019254A CN 105480862 A CN105480862 A CN 105480862A
- Authority
- CN
- China
- Prior art keywords
- contact
- pull bar
- flexible axle
- control lever
- handle
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Control Devices (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a safety control switch used for a tower crane. The safety control switch comprises an upper handle, a flexible shaft pull rod, a lower handle, an expansion device, an operating rod, a contact device and an axle shaft. The lower end of the operating rod is fixed on the axle shaft. The upper end of the operating rod is sleeved by the upper handle. The lower handle can be connected onto the operating rod in an up-down sliding manner and is positioned at the lower part of the upper handle. The flexible shaft pull rod can be mounted inside the operating rod in an up-down sliding manner; the expansion device is arranged between the upper handle and the lower handle. The contact device is arranged at the lower end of the flexible shaft pull rod. The flexible shaft pull rod slides up and down so as to press a contact sliding block on a contact, so that the circuit of a tower crane system is controlled to be switched on or off. The contact device is arranged on the control switch of the tower crane, and is controlled to control the on-off of the whole circuit of the tower crane, and when a person is in a coma or meets with other external force uncontrollable factors, as long as a hand is released, a machine can be stopped whenever the operating rod is in any position, so that the safety protection is realized.
Description
Technical field
The present invention relates to tower machine equipment technical field, be specifically related to the safe control switch that a kind of tower machine uses.
Background technology
General tower machine is all controlled by master controller, and during operation, mention lower handle manipulation operations bar, tower machine just starts action, but tower machine will be made to stop action, and first must allow control lever homing, namely control lever keeps vertical position; That is when operating, namely control lever and vertical angled time, tower machine can not be allowed to stop, this will cause certain potential safety hazard, such as operator's stupor, death etc., now, because people loses consciousness, if the tower machine that work can not be allowed is out of service, so serious consequence may be there is.
Summary of the invention
The invention provides the safe control switch that a kind of tower machine uses, there is the problem of above-mentioned hidden danger in the shutdown operation solving tower machine in prior art.
The present invention realizes the technical scheme that above-mentioned technique effect adopts:
The safe control switch that a kind of tower machine uses, comprise upper handle, flexible axle pull bar, lower handle, retractor device, control lever, contact apparatus and semiaxis, the lower end of described control lever is fixed on semiaxis, upper handle is inserted in the upper end of described control lever, described lower handle can slide up and down and is connected on control lever and is positioned at the bottom of upper handle, described flexible axle pull bar can slide up and down and is installed on the inside of control lever, retractor device is provided with between described upper handle and lower handle, described contact apparatus is arranged at the lower end of flexible axle pull bar, described device comprises contact pedestal, the contact slide block being arranged on the contact on contact pedestal and being arranged on for the whole connecting and disconnecting of the circuit of control tower machine system on contact, by described flexible axle pull bar slide up and down pressing contact on contact slide block thus the break-make of control tower machine circuit system.
Further, described retractor device comprises the slot on control lever upper end, the circular hole of flexible axle pull bar upper end, elastic cylindrical pin and spring, described control lever and flexible axle pull bar are interconnected and flexible axle pull bar are limited in slot through slot and circular hole and slide up and down by described elastic cylindrical pin, described spring is placed on control lever upper end and one end contacts with upper handle and connects, the other end is connected with elastic cylinder pin contacts, when lower handle is up carried, lower handle drives elastic cylindrical pin then to drive flexible axle pull bar up to move, when unclamping hand, being moved downward by the effect promotion elastic cylindrical pin of spring drives flexible axle pull bar down to move then.
Further, the two ends of described flexible axle pull bar are provided with the termination of rigidity, are provided with Bowden cable between the described termination at two ends.
Further, described contact is normally closed interlock.
According to above technical scheme, when lower handle is not mentioned, by the application force of spring, flexible axle pull bar presses down, contact slide block jacking on the contact of flexible axle pull bar lower end is gone, normally closed interlock is disconnected, and then the whole circuit of tower machine is disconnected, now, even if manipulation operations bar, tower machine also can not make corresponding action, and when mentioning lower handle, flexible axle pull bar is also brought up, because contact slide block is not under pressure, contact slide block is by the spring ejection of contact inside, return to normality, contact closure, the whole circuit of tower machine is connected, tower machine recovers normal mode of operation.
Beneficial effect of the present invention is: the present invention by arranging contact apparatus on the control switch of tower machine; the break-make of the whole circuit of control tower machine is carried out by controlling contact apparatus; when there is the uncontrollable factor of other external force such as stupor as people; as long as hand unclamps; control lever can make machine stop in any position, realizes safety guard-safeguard.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the safe control switch that a kind of tower machine of the present invention uses;
In figure: 1-upper handle; 2-flexible axle pull bar; 3-lower handle; 5-control lever; 6-contact apparatus; 7-semiaxis; 8-slot; 9-circular hole; 10-elastic cylindrical pin; 11-spring; 12-contact; 13-contact slide block.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
Embodiment 1
As shown in Figure 1, the safe control switch that a kind of tower machine uses, comprise upper handle 1, flexible axle pull bar 2, lower handle 3, retractor device, control lever 5, contact apparatus 6 and semiaxis 7, the lower end of control lever 5 is fixed on semiaxis 7, upper handle 1 is inserted in the upper end of control lever 5, lower handle 3 can slide up and down and is connected on control lever 5 and is positioned at the bottom of upper handle 1, flexible axle pull bar 2 can slide up and down and is installed on the inside of control lever 5, retractor device is provided with between upper handle 1 and lower handle 3, retractor device comprises the slot 8 on control lever upper end, the circular hole 9 of flexible axle pull bar upper end, elastic cylindrical pin 10 and spring 11, described control lever 5 and flexible axle pull bar 2 are interconnected and flexible axle pull bar are limited in slot through slot 8 and circular hole 9 and slide up and down by elastic cylindrical pin 10, spring 11 is placed on control lever 5 upper end and one end contacts with upper handle 1 and connects, the other end contacts with elastic cylindrical pin 10 and connects, when lower handle 3 is up carried, lower handle 3 drives elastic cylindrical pin 10 then to drive flexible axle pull bar 2 up to move, when unclamping hand, being moved downward by the effect promotion elastic cylindrical pin 10 of spring 11 drives flexible axle pull bar down to move then, contact apparatus is arranged at the lower end of flexible axle pull bar, comprise contact pedestal, the contact slide block 13 being arranged on the contact 12 on contact pedestal and being arranged on for the whole connecting and disconnecting of the circuit of control tower machine system on contact, contact 12 is normally closed interlocks, under normal conditions, contact 12 is closed, by described flexible axle pull bar 2 slide up and down pressing contact on contact slide block 13 thus the break-make of control tower machine circuit system, the two ends of described flexible axle pull bar 2 are provided with the termination of rigidity, Bowden cable is provided with between the described termination at two ends, therefore, when lower handle is not mentioned, also can manipulation operations bar, now pull bar bends, but because contact disconnects, the whole circuit of tower machine disconnects, so tower machine also can not action.
During installation, flexible axle pull bar 2 first pierces into the inside of control lever 5, the slot 8 of control lever 5 aligns with the circular hole 9 of flexible axle pull bar, elastic cylindrical pin 10 is driven in the circular hole of flexible axle pull bar 2, make flexible axle pull bar 2 be limited in the slot 8 of control lever upper end, flexible axle pull bar 2 can inside control lever slot 8 scope in move up and down; Again after spring is put in control lever 5 upper end, screw in upper handle.
When lower handle 3 is not mentioned, by the application force of spring 11, flexible axle pull bar 2 presses down, contact slide block 13 jacking on the contact of flexible axle pull bar 2 lower end is gone, normally closed interlock is disconnected, and then the whole circuit of tower machine is disconnected, now, even if manipulation operations bar 5, tower machine also can not make corresponding action, and when mentioning lower handle 3, flexible axle pull bar 2 is also brought up, because contact slide block 13 is not under pressure, contact slide block 13 is by the spring ejection of contact inside, return to normality, contact closure, the whole circuit of tower machine is connected, tower machine recovers normal mode of operation.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a safe control switch tower machine used, comprise upper handle, flexible axle pull bar, lower handle, retractor device, control lever, contact apparatus and semiaxis, it is characterized in that, the lower end of described control lever is fixed on semiaxis, upper handle is inserted in the upper end of described control lever, described lower handle can slide up and down and is connected on control lever and is positioned at the bottom of upper handle, described flexible axle pull bar can slide up and down and is installed on the inside of control lever, retractor device is provided with between described upper handle and lower handle, described contact apparatus is arranged at the lower end of flexible axle pull bar, described device comprises contact pedestal, the contact slide block being arranged on the contact on contact pedestal and being arranged on for the whole connecting and disconnecting of the circuit of control tower machine system on contact, by described flexible axle pull bar slide up and down pressing contact on contact slide block thus the break-make of control tower machine circuit system.
2. the safe control switch a kind of tower machine according to claim 1 used, it is characterized in that, described retractor device comprises slot on control lever upper end, the circular hole of flexible axle pull bar upper end, elastic cylindrical pin and spring, described control lever and flexible axle pull bar are interconnected and flexible axle pull bar are limited in slot through slot and circular hole and slide up and down by described elastic cylindrical pin, described spring is placed on control lever upper end and one end contacts with upper handle and connects, and the other end is connected with elastic cylinder pin contacts.
3. the safe control switch a kind of tower machine according to claim 2 used, is characterized in that, the two ends of described flexible axle pull bar are provided with the termination of rigidity, are provided with Bowden cable between the described termination at two ends.
4. the safe control switch a kind of tower machine according to claim 1 used, it is characterized in that, described contact is normally closed interlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019254.9A CN105480862B (en) | 2015-12-30 | 2015-12-30 | A kind of safe control switch used in tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019254.9A CN105480862B (en) | 2015-12-30 | 2015-12-30 | A kind of safe control switch used in tower crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105480862A true CN105480862A (en) | 2016-04-13 |
| CN105480862B CN105480862B (en) | 2017-11-03 |
Family
ID=55668204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511019254.9A Active CN105480862B (en) | 2015-12-30 | 2015-12-30 | A kind of safe control switch used in tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105480862B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555463A (en) * | 1941-09-20 | 1943-08-24 | Igranic Electric Co Ltd | Improvements in or relating to crane limit switches |
| CN2535392Y (en) * | 2002-04-16 | 2003-02-12 | 浙江箭环电器机械有限公司 | Combined control stand for crane |
| CN202657856U (en) * | 2012-07-11 | 2013-01-09 | 浙江三港起重电器有限公司 | Secondary loop master controller for construction lift |
| CN204569198U (en) * | 2015-04-07 | 2015-08-19 | 扬戈科技股份有限公司 | A kind of novel main signaling controller |
| CN205442420U (en) * | 2015-12-30 | 2016-08-10 | 浙江箭环电气开关有限公司 | Safe master switch who uses on tower machine |
-
2015
- 2015-12-30 CN CN201511019254.9A patent/CN105480862B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555463A (en) * | 1941-09-20 | 1943-08-24 | Igranic Electric Co Ltd | Improvements in or relating to crane limit switches |
| CN2535392Y (en) * | 2002-04-16 | 2003-02-12 | 浙江箭环电器机械有限公司 | Combined control stand for crane |
| CN202657856U (en) * | 2012-07-11 | 2013-01-09 | 浙江三港起重电器有限公司 | Secondary loop master controller for construction lift |
| CN204569198U (en) * | 2015-04-07 | 2015-08-19 | 扬戈科技股份有限公司 | A kind of novel main signaling controller |
| CN205442420U (en) * | 2015-12-30 | 2016-08-10 | 浙江箭环电气开关有限公司 | Safe master switch who uses on tower machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105480862B (en) | 2017-11-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 322000 building 3, 139 jingsan Road, Beiyuan street, Yiwu City, Jinhua City, Zhejiang Province Patentee after: Zhejiang Jianhuan Electric Co.,Ltd. Address before: No. 37-1, Chengzhong North Road, Chocheng Street, Yiwu City, Jinhua City, Zhejiang Province, 322099 Patentee before: ZHEJIANG JIANHUAN ELECTRIC SWITCH CO.,LTD. |