CN108946527B - Tower type hoisting device capable of effectively reducing failure of torque limiter - Google Patents
Tower type hoisting device capable of effectively reducing failure of torque limiter Download PDFInfo
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- CN108946527B CN108946527B CN201810871848.XA CN201810871848A CN108946527B CN 108946527 B CN108946527 B CN 108946527B CN 201810871848 A CN201810871848 A CN 201810871848A CN 108946527 B CN108946527 B CN 108946527B
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- moment limiter
- main body
- rod
- limiter main
- moment
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
- B66C2700/084—Protection measures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a tower-type hoisting device capable of effectively reducing the failure of a moment limiter, which comprises a moment limiter main body, a bottom rod, ejector rods and an underframe, wherein the bottom end of the moment limiter main body is connected with two signal transmission lines, the underframe, a protective lantern ring and the bottom rod are sequentially arranged on one side of the moment limiter main body from top to bottom, and the ejector rod is arranged at one end, far away from the moment limiter main body, of the underframe. This can effectively alleviate tower hoisting apparatus of moment limiter inefficacy can avoid damaging because of the too big switch that leads to of impact, makes the ejector pin can dismantle simultaneously, avoids making the ejector pin angular deflection because of the transportation striking to be provided with the magnetic ring, avoid external magnetic field to influence moment limiter main part work, thereby avoided leading to the phenomenon of moment limiter inefficacy because of the magnetic field influence, promoted tower hoisting apparatus's practicality.
Description
Technical Field
The invention relates to the technical field of moment limiters, in particular to a tower-type hoisting device capable of effectively reducing the failure of a moment limiter.
Background
In the safety protection device of the tower crane, the moment limiter is the most important protection device, and the tower crane loses the important over-moment protection function due to the failure and the loss of the function of the moment limiter. The moment exceeds the standard in the use process of the tower crane, and can cause serious property loss and personal casualty accidents such as the overturning and arm folding of the tower crane. Therefore, it is necessary to ensure the effective integrity of the moment limiter, and the moment limiter is actually a mechanical deformation amplifier, which converts the small deformation of the tower top chord when being pressed into the larger deformation between the arched steel plates, so that the switch mounted on the arched plate is pressed, the controller executes the moment and amplitude variation protection functions, when the tower crane is suspended, the load changes suddenly, the stroke of the tower crane far exceeds 110% of the moment effect, the ejector rod damages the stroke switch top with the control effect to fail, and the moment limiter fails, meanwhile, in the process of tower crane transportation and disassembly, the ejector rod is often collided, when the angle deviation is more than 3%, the upper pressure shaft is influenced to generate the downward pressure work on the tower crane, so that the moment limiter fails, and therefore, a tower crane device capable of effectively relieving the failure of the moment limiter needs to be designed.
Disclosure of Invention
The invention aims to provide a tower-type hoisting device capable of effectively relieving failure of a moment limiter, so as to solve the problems that the traditional moment limiter in the background art often fails when the acting force of a mandril is too large, and the mandril may also fail due to collision to the mandril in the transportation process.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can effectively alleviate tower hoisting apparatus that moment limiter became invalid, includes moment limiter main part, sill bar, ejector pin and chassis, the bottom of moment limiter main part is connected with signal transmission line, and signal transmission line's quantity is two, one side of moment limiter main part is from last to installing chassis, the protection lantern ring and sill bar down in proper order, the ejector pin is installed to the one end that moment limiter main part was kept away from to the chassis, the counterpoint hole is installed on the top of ejector pin, and installs the last pressure shaft, press switch is installed on the top of sill bar, and press switch passes the lantern ring end of the protection lantern ring.
Preferably, the bottom ends of the torque limiter main bodies on two sides of the signal transmission line are provided with mounting frames, each mounting frame is provided with a magnetic ring, and the signal transmission line penetrates through the magnetic rings.
Preferably, damping spring is installed to the bottom of the protection lantern ring, and damping spring keeps away from the one end of the protection lantern ring and is connected with the top of sill bar.
Preferably, the output end of the push switch is electrically connected with the input end of the torque limiter main body through a lead.
Preferably, the moment limiter main parts on the two sides of the bottom frame are provided with slide rails, the two sides of the bottom frame are provided with slide blocks, and the slide blocks are matched with the slide rails.
Preferably, the bottom frame is provided with a mounting groove, bolt holes are formed in the front faces of the bottom frame on the two sides of the mounting groove, the mounting groove is matched with the top end of the ejector rod, fixing bolts are mounted on the bolt holes, and the fixing bolts penetrate through the mounting gasket.
Compared with the prior art, the invention has the beneficial effects that: the tower type hoisting device capable of effectively reducing the failure of the torque limiter can avoid switch damage caused by overlarge impact force, can also enable the ejector rod to be detachable, can avoid the angle deviation of the ejector rod caused by transportation impact, and is provided with the magnetic ring to avoid the influence of an external magnetic field on the work of the torque limiter main body, thereby avoiding the failure phenomenon of the torque limiter caused by the influence of the magnetic field and improving the practicability of the tower type hoisting device;
(1) the protection lantern ring and the damping spring are arranged, in the working process of the tower crane, lifting torque generated by the tower crane is transmitted to the ejector rod through the upper pressing shaft, the ejector rod is pushed to slide, the bottom frame has the slidable characteristic through the sliding block sliding in the sliding rail, so that the ejector rod can slide on one side of the torque limiter main body, when the bottom end of the ejector rod is pressed to the press switch, the press switch sends a signal to the torque limiter main body, a controller in the torque limiter main body executes a torque and amplitude variation protection function, when the torque is larger than 110%, the bottom end of the ejector rod impacts the protection lantern ring, the protection lantern ring plays a protection function on the bottom rod, and impact force caused by impact is reduced through a bolt hole between the ejector rod and the protection lantern ring, so that the bottom rod and the press switch are prevented from being damaged due;
(2) the top rod is provided with an underframe and a mounting gasket, a worker can insert one end of the top rod into the mounting groove on the underframe through the mounting groove on the underframe and align with a bolt hole on the underframe through the mounting gasket on the top rod, and the top rod is fixed by using a fixing bolt, so that the worker can detach the top rod when the top rod needs to be detached and transported, meanwhile, an alignment hole at the top end of the top rod can be matched with an upper pressure shaft on a crane device for use, and the top pressure shaft is inserted into the alignment hole, so that the top rod can slide due to the torque transmitted by the upper pressure shaft, and the top rod is prevented from being offset after being impacted;
(3) the magnetic ring is arranged, when a controller in the torque limiter main body executes torque and amplitude variation protection functions, signals are transmitted to the crane device main body through the signal transmission line, and in the transmission process, the signals penetrate through the magnetic ring through the signal transmission line (the magnetic ring has different impedance characteristics under different frequencies, the impedance is small generally at low frequency, and the impedance presented by the magnetic ring is increased sharply when the signal frequency is increased) to form a common mode choke coil, so that the anti-interference performance of the signal transmission line is improved, the torque limiter main body is prevented from being influenced by an external magnetic field, and the phenomenon that the torque limiter fails due to the influence of the magnetic field is avoided.
Drawings
FIG. 1 is a schematic diagram of the working structure of the present invention;
FIG. 2 is a schematic side view of the structure of the present invention;
FIG. 3 is a schematic top view of the ejector pin structure of the present invention;
FIG. 4 is a schematic front view of the ejector pin structure of the present invention;
FIG. 5 is a side view of the undercarriage structure of the present invention;
fig. 6 is an enlarged view of the part a in fig. 1.
In the figure: 1. a torque limiter body; 2. a signal transmission line; 3. a mounting frame; 4. a bottom bar; 5. a top rod; 6. pressing the shaft upwards; 7. a slider; 8. a slide rail; 9. a protective collar; 10. a push switch; 11. a chassis; 12. installing a gasket; 13. mounting grooves; 14. bolt holes; 15. a damping spring; 16. fixing the bolt; 17. a magnetic ring; 18. and aligning holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention is shown:
the utility model provides a can effectively alleviate tower hoisting apparatus that moment limiter became invalid, includes moment limiter main part 1, sill bar 4, ejector pin 5 and chassis 11, and the bottom of moment limiter main part 1 is connected with signal transmission line 2, and the quantity of signal transmission line 2 is two, and as preferred, 1 bottoms of moment limiter main part of 2 both sides of signal transmission line all are provided with mounting bracket 3, and every group mounting bracket 3 all installs magnetic ring 17, and signal transmission line 2 passes magnetic ring 17.
When a controller in the torque limiter main body 1 executes torque and amplitude variation protection functions, signals are transmitted to the crane device main body through the signal transmission line 2, and in the transmission process, the signals pass through the magnetic ring 17 through the signal transmission line 2 (the magnetic ring 17 has different impedance characteristics under different frequencies, generally, the impedance is very small under low frequency, and the impedance presented by the magnetic ring 17 is rapidly increased when the signal frequency is increased) to form a common mode choke coil, so that the anti-interference performance of the signal transmission line 2 is improved, the torque limiter main body 1 is prevented from being influenced by an external magnetic field, and the phenomenon that the torque limiter fails due to the influence of the magnetic field is avoided.
One side of the moment limiter main body 1 is sequentially provided with an underframe 11, a protective lantern ring 9 and a bottom rod 4 from top to bottom, one end of the underframe 11 far away from the moment limiter main body 1 is provided with a top rod 5, the top end of the top rod 5 is provided with a registration hole 18, an upper pressure shaft 6 is arranged on the alignment hole 18, slide rails 8 are arranged on the moment limiter main body 1 at the two sides of the bottom frame 11, slide blocks 7 are arranged at the two sides of the bottom frame 11, the slide blocks 7 are matched with the slide rails 8, the principle of the upper pressing shaft 6 moving by the moment generated by the crane body and the mandril 5 sliding downwards is the prior art which is mastered by the technicians in the field and is not explained again, the two sides of the top end of the mandril 5 are provided with mounting gaskets 12, the top end of the bottom rod 4 is provided with a press switch 10, and the press switch 10 passes through the collar end of the protective collar 9, and the output end of the press switch 10 is electrically connected with the input end of the torque limiter main body 1 through a lead.
Preferably, a damping spring 15 is installed at the bottom end of the protection lantern ring 9, and one end of the damping spring 15, which is far away from the protection lantern ring 9, is connected with the top end of the bottom rod 4, during the operation of the tower crane, the lifting torque generated by the damping spring 15 is transmitted to the ejector rod 5 through the upper pressing shaft 6, the ejector rod 5 is pushed to slide, and the sliding block 7 slides in the sliding rail 8, so that the underframe 11 has a slidable characteristic, and the ejector rod 5 can slide on one side of the torque limiter main body 1, when the bottom end of the ejector rod 5 touches the press switch 10, the press switch 10 sends a signal to the torque limiter main body 1, a controller inside the torque limiter main body 1 performs torque and amplitude-variable protection functions, and when the torque is greater than 110%, the bottom end of the ejector rod 5 hits the protection lantern ring 9, the protection lantern ring 9 plays a protection function to the bottom rod 4, and reduces the impact force of the hit through the, thereby avoiding damage to the bottom bar 4 and the push switch 10 due to excessive torque.
Preferably, the underframe 11 is provided with a mounting groove 13, bolt holes 14 are formed in the front faces of the underframe 11 on both sides of the mounting groove 13, the mounting groove 13 is matched with the top end of the mandril 5, a fixing bolt 16 is mounted on the bolt hole 14, and the fixing bolt 16 penetrates through the mounting gasket 12.
Through designing ejector pin 5 into detachable construction, the one end of staff accessible chassis 11 is inserted wherein with ejector pin 5's one end, and align with bolt hole 14 on the chassis 11 through installation gasket 12 on the ejector pin 5, use fixing bolt 16 to fix, make the staff can dismantle ejector pin 5 when the transportation is dismantled to needs, the counterpoint hole 18 on ejector pin 5 top can use with last pressure shaft 6 cooperation on the hoist device simultaneously, through inserting last pressure shaft 6 in counterpoint hole 18, make the moment of last pressure shaft 6 transmission can make ejector pin 5 slide, thereby avoided ejector pin 5 to receive to produce the skew after the striking, the practicality of hoist device moment limiter has been promoted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The utility model provides a can effectively alleviate tower hoisting apparatus that moment limiter became invalid, includes moment limiter main part (1), sill bar (4), ejector pin (5) and chassis (11), its characterized in that: the moment limiter is characterized in that the bottom end of the moment limiter main body (1) is connected with signal transmission lines (2), the number of the signal transmission lines (2) is two, one side of the moment limiter main body (1) is sequentially provided with an underframe (11), a protective lantern ring (9) and a bottom rod (4) from top to bottom, one end, far away from the moment limiter main body (1), of the underframe (11) is provided with a top rod (5), the top end of the top rod (5) is provided with a counterpoint hole (18), the counterpoint hole (18) is provided with an upper pressure shaft (6), mounting gaskets (12) are arranged on two sides of the top end of the top rod (5), the top end of the bottom rod (4) is provided with a press switch (10), and the press switch (10) penetrates through the lantern ring end of the;
the bottom ends of the moment limiter main bodies (1) on the two sides of the signal transmission line (2) are provided with mounting frames (3), each group of mounting frames (3) is provided with a magnetic ring (17), and the signal transmission line (2) penetrates through the magnetic rings (17);
a damping spring (15) is installed at the bottom end of the protection lantern ring (9), and one end, far away from the protection lantern ring (9), of the damping spring (15) is connected with the top end of the bottom rod (4);
the moment limiter main body (1) on two sides of the bottom frame (11) is provided with slide rails (8), slide blocks (7) are mounted on two sides of the bottom frame (11), and the slide blocks (7) are matched with the slide rails (8);
be provided with mounting groove (13) on chassis (11), and chassis (11) of mounting groove (13) both sides openly are provided with bolt hole (14), mounting groove (13) mutually support with the top of ejector pin (5), install fixing bolt (16) on bolt hole (14), and fixing bolt (16) pass installation gasket (12).
2. The tower crane apparatus of claim 1, wherein the tower crane apparatus is operable to mitigate failure of the torque limiter, and further comprising: the output end of the press switch (10) is electrically connected with the input end of the moment limiter main body (1) through a lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810871848.XA CN108946527B (en) | 2018-08-02 | 2018-08-02 | Tower type hoisting device capable of effectively reducing failure of torque limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810871848.XA CN108946527B (en) | 2018-08-02 | 2018-08-02 | Tower type hoisting device capable of effectively reducing failure of torque limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108946527A CN108946527A (en) | 2018-12-07 |
| CN108946527B true CN108946527B (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810871848.XA Active CN108946527B (en) | 2018-08-02 | 2018-08-02 | Tower type hoisting device capable of effectively reducing failure of torque limiter |
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| CN (1) | CN108946527B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2324135Y (en) * | 1998-04-06 | 1999-06-16 | 李明 | Multiple deforming load limiter |
| CN201201871Y (en) * | 2008-02-28 | 2009-03-04 | 薛卫东 | Torque limitation device for tower crane |
| CN203807018U (en) * | 2014-04-24 | 2014-09-03 | 江苏惠尔德建筑设备有限公司 | Tower crane moment limiter |
| CN205312944U (en) * | 2016-01-30 | 2016-06-15 | 河南恒达机电设备有限公司 | Moment load lifting limiter |
| CN205634665U (en) * | 2016-05-05 | 2016-10-12 | 长沙海川自动化设备有限公司 | Hang tower machine load lifting limiter who weighs detection device and have device |
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- 2018-08-02 CN CN201810871848.XA patent/CN108946527B/en active Active
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| CN108946527A (en) | 2018-12-07 |
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Effective date of registration: 20201022 Address after: No.51, Yaojia village, Shaliu street, Sanmen County, Taizhou City, Zhejiang Province Applicant after: Yao Hang Address before: 241000 No. 3-302, No. 6 Jinshan Road, Yijiang District, Wuhu City, Anhui Province Applicant before: WUHU YINGTEJIE INTELLIGENT TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20221205 Address after: No. 309, Floor 3, East Building, Electronics Industrial Park, Ganquan Road, Xinting Street, Shen County, Liaocheng City, Shandong Province, 252000 Patentee after: Shenxian Lukai Comprehensive Service Co.,Ltd. Address before: 317100 No.51, zhongpian, Yaojia village, Shaliu street, Sanmen County, Taizhou City, Zhejiang Province Patentee before: Yao Hang |