CN211524286U - Mast anti-falling mechanism - Google Patents
Mast anti-falling mechanism Download PDFInfo
- Publication number
- CN211524286U CN211524286U CN201922468763.XU CN201922468763U CN211524286U CN 211524286 U CN211524286 U CN 211524286U CN 201922468763 U CN201922468763 U CN 201922468763U CN 211524286 U CN211524286 U CN 211524286U
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- China
- Prior art keywords
- mast
- positioning pin
- locating pin
- pin fixing
- lifting
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- Expired - Fee Related
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- 230000007246 mechanism Effects 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 14
- 230000001939 inductive effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a mast anti-falling mechanism, including removing the walking seat, the upper end surface fixedly connected with locating pin fixing base of removing the walking seat, the inside swing joint of locating pin fixing base has the lift mast, the front end surface of locating pin fixing base is provided with mechanical locating pin, the upper end surface of removing the walking seat is close to the fixed position connection locating pin case of locating pin fixing base, and is preferred, a plurality of bolt hole grooves have been seted up to the both sides surface equidistance of locating pin fixing base, and bolt hole groove is used for the grafting of mechanical locating pin to use, and the device structure utilizes mechanical locating pin to restrict the relative slip between second section mast and the first section mast; because the motion is transmitted between each section of the lifting mast through the double rows of chains and the masts move at the same speed, the masts can not fall down as long as the position between any two mast sections is kept from moving in the mast lifting process.
Description
Technical Field
The utility model relates to an overhaul technical field, specifically be a mechanism of preventing falling of mast.
Background
The defects of the prior mast lifting are as follows:
1. the existing mast lifting and dropping prevention method is characterized in that the hydraulic cylinder is controlled to suddenly release pressure only by depending on a hydraulic cylinder overflow valve, so that the hydraulic cylinder slowly drops at a certain speed, and the safety of dropping after the mast suddenly releases pressure cannot be guaranteed;
2. the sudden descent of the mast under the condition of misoperation in the process of maintenance operation brings unsafe risk to the maintenance operation, and the risk of mast falling caused by human factors is not eliminated;
to this end, a mast fall arrest mechanism is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mast anti-falling mechanism, which utilizes a mechanical locating pin to limit the relative sliding between a second section of mast and a first section of mast; because the motion is transmitted between each section of the lifting mast through the double rows of chains and the masts move at the same speed, the masts can not fall down as long as the position between any two mast sections is kept from moving in the mast lifting process.
In order to achieve the above object, the utility model provides a following technical scheme: the mast anti-falling mechanism comprises a movable walking seat, wherein a positioning pin fixing seat is fixedly connected to the outer surface of the upper end of the movable walking seat, a lifting mast is movably connected to the inside of the positioning pin fixing seat, a mechanical positioning pin is arranged on the outer surface of the front end of the positioning pin fixing seat, and a positioning pin storage box is fixedly connected to the position, close to the positioning pin fixing seat, of the outer surface of the upper end of the movable walking seat.
By adopting the technical scheme, the device structure utilizes the mechanical positioning pin to limit the relative sliding between the second section of mast and the first section of mast; because the motion is transmitted between each section of the lifting mast through the double rows of chains and the masts move at the same speed, the masts can not fall down as long as the position between any two mast sections is kept from moving in the mast lifting process.
Preferably, a plurality of bolt hole grooves are formed in the outer surfaces of the two sides of the positioning pin fixing seat at equal intervals.
Through adopting above-mentioned technical scheme, bolt hole groove is used for mechanical locating pin to peg graft and uses.
Preferably, the mechanical positioning pin is inserted into the bolt hole groove, and the mechanical positioning pin is located on the lower side of the bottom end of the lifting mast.
Through adopting above-mentioned technical scheme, inject the home range of the inside lift mast of locating pin fixing base.
Preferably, the number of the lifting masts is several, and the several lifting masts move through chain power transmission.
By adopting the technical scheme, because the motion is transmitted between the masts through the chains, each mast section rises and falls at a constant speed, the last mast section can be ensured to be immobile as long as any two mast sections are ensured not to be displaced mutually, and the maintenance platform is ensured not to fall.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the mast anti-falling maintenance platform has the advantages that the tool is simple and easy to operate, the positioning pin fixing seat can be easily installed, and the installation and operation are convenient;
2. operation factor of safety is higher, has promoted the reliability of lift maintenance platform safety work, avoids the work platform to make the pneumatic cylinder release pressure suddenly because the bearing transships, the risk that the mast falls.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a combined view of the positioning pin fixing seat, the mechanical positioning pin and the lifting mast of the present invention;
fig. 3 is the internal sensing circuit diagram of the positioning pin storage box of the present invention.
In the figure:
1. moving the walking seat; 2. a lifting mast; 3. a positioning pin fixing seat; 4. a mechanical locating pin; 5. and a positioning pin storage box.
Detailed Description
In the following, reference will be made to the accompanying drawings in the embodiments of the present invention for clearly and completely describing the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution:
as shown in fig. 1 and 2, the mast anti-falling mechanism includes a movable walking seat 1, a positioning pin fixing seat 3 is fixedly connected to an outer surface of an upper end of the movable walking seat 1, a lifting mast 2 is movably connected to an inside of the positioning pin fixing seat 3, a mechanical positioning pin 4 is arranged on an outer surface of a front end of the positioning pin fixing seat 3, and a positioning pin storage box 5 is fixedly connected to a position, close to the positioning pin fixing seat 3, of the outer surface of the upper end of the movable walking seat 1.
By adopting the technical scheme, the device structure utilizes the mechanical positioning pin 4 to limit the relative sliding between the second section of mast and the first section of mast; because the motion is transmitted between each section of the lifting mast 2 through the double rows of chains and the masts move at the same speed, the masts can not fall down as long as the position between any two mast sections is kept not to move in the mast lifting process.
Specifically, as shown in fig. 1, a plurality of bolt hole grooves are equidistantly formed in the outer surfaces of the two sides of the positioning pin fixing seat 3.
Through adopting above-mentioned technical scheme, bolt hole groove is used for 4 grafting uses of mechanical locating pin.
Specifically, as shown in fig. 2, the mechanical positioning pin 4 is inserted into the slot of the bolt hole, and the mechanical positioning pin 4 is located at the lower side of the bottom end of the lifting mast 2.
Through adopting above-mentioned technical scheme, inject the home range of 3 inside lift masts of locating pin fixing base 2.
Specifically, as shown in fig. 1, the number of the lifting masts 2 is several, and several lifting masts 2 move through chain power transmission.
By adopting the technical scheme, because the motion is transmitted between the masts through the chains, each mast section rises and falls at a constant speed, the last mast section can be ensured to be immobile as long as any two mast sections are ensured not to be displaced mutually, and the maintenance platform is ensured not to fall.
The working principle is as follows:
1. the mast anti-falling maintenance platform has the advantages that the tool is simple and easy to operate, the positioning pin fixing seat 3 can be easily installed, and the installation and operation are convenient;
2. operation factor of safety is higher, has promoted the reliability of lift maintenance platform safety work, avoids the work platform to make the pneumatic cylinder release pressure suddenly because the bearing transships, the risk that the mast falls.
The device structure utilizes a mechanical positioning pin 4 to limit the relative sliding between the second section of mast and the first section of mast; because the motion is transmitted between each section of the lifting mast 2 through the double-row chain, the masts move at the same speed, the masts can not fall off as long as the position between any two mast sections is kept not to move in the mast lifting process, and the displacement change of the whole mast lifting maintenance platform is controlled by utilizing the displacement induction of the induction switch on the mechanical positioning pin 4, thereby avoiding the occurrence of the condition of manual misoperation in the maintenance work.
The using method comprises the following steps: the positioning pin fixing seat 3, the movable walking seat 1 and the lifting mast 2 are fixed into a whole, the platform to be overhauled enters an overhauling station, the mechanical positioning pin 4 is taken out of the positioning pin storage box 5 after the lifting mast 2 is lifted, and the mechanical positioning pin is inserted into a pin hole groove of the positioning pin fixing seat 3, which is closest to the bottom of the second lifting mast 2; because the lifting masts 2 transfer motion through chains, each lifting mast 2 ascends and descends at a constant speed, so long as any two lifting masts 2 are ensured not to be displaced with each other, the tail lifting mast 2 is ensured not to move, and the maintenance platform is ensured not to fall.
The built-in inductive switch of locating pin case 5, through the position of inductive switch response mechanical locating pin 4, whole maintenance platform is in the on-state and can operates it when mechanical locating pin 4 is in locating pin case 5, and after mechanical locating pin 4 leaves the inductive distance of the built-in inductive switch of locating pin case 5, whole maintenance platform is in the unable operation of off-state maintenance platform to reach and prevent that lift mast 2 from falling.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a mechanism of preventing falling of mast, is including removing walking seat (1), its characterized in that: the outer fixed surface of the upper end of the movable walking seat (1) is fixedly connected with a positioning pin fixing seat (3), the inner portion of the positioning pin fixing seat (3) is movably connected with a lifting mast (2), a mechanical positioning pin (4) is arranged on the outer surface of the front end of the positioning pin fixing seat (3), and the outer surface of the upper end of the movable walking seat (1) is close to the positioning pin fixing seat (3) and is fixedly connected with a positioning pin storage box (5).
2. A mast fall arrest mechanism according to claim 1, wherein: a plurality of bolt hole grooves are formed in the outer surfaces of the two sides of the positioning pin fixing seat (3) at equal intervals.
3. A mast fall arrest mechanism according to claim 1, wherein: the mechanical positioning pin (4) is inserted in the bolt hole groove, and the mechanical positioning pin (4) is positioned at the lower side of the bottom end of the lifting mast (2).
4. A mast fall arrest mechanism according to claim 1, wherein: the number of the lifting masts (2) is a plurality, and the lifting masts (2) move through chain power transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468763.XU CN211524286U (en) | 2019-12-31 | 2019-12-31 | Mast anti-falling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468763.XU CN211524286U (en) | 2019-12-31 | 2019-12-31 | Mast anti-falling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211524286U true CN211524286U (en) | 2020-09-18 |
Family
ID=72468083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922468763.XU Expired - Fee Related CN211524286U (en) | 2019-12-31 | 2019-12-31 | Mast anti-falling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211524286U (en) |
-
2019
- 2019-12-31 CN CN201922468763.XU patent/CN211524286U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |