CN209668652U - A kind of anti-tower crane suspension hook is rushed to summit the safety guard that disconnected rope falls - Google Patents
A kind of anti-tower crane suspension hook is rushed to summit the safety guard that disconnected rope falls Download PDFInfo
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- CN209668652U CN209668652U CN201920241597.7U CN201920241597U CN209668652U CN 209668652 U CN209668652 U CN 209668652U CN 201920241597 U CN201920241597 U CN 201920241597U CN 209668652 U CN209668652 U CN 209668652U
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- block
- summit
- suspension hook
- wedge block
- disconnected rope
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Abstract
It rushes to summit the safety guard that disconnected rope falls the utility model discloses a kind of anti-tower crane suspension hook, including the disconnected rope drop device of preventing colliding with top and mandril hook, the disconnected rope drop device of preventing colliding with top includes buffer unit, anti- block overturns bar, lock wedge block, otic placode, block recovery operation bar, the otic placode includes two pieces, it is set between two pieces of otic placodes and locks wedge block there are two symmetrical, the lock wedge block is installed pin shaft by block and is rotatably coupled between two otic placodes, each lock wedge block is equipped with an anti-block for limit and overturns bar, lock wedge block is connected with block recovery operation bar, otic placode is equipped with the arc-shaped opening for locking wedge block recovery operation, buffer unit is equipped with above two lock wedge blocks.Principle and structure be simple, light weight, on tower crane lifting performance influence it is limited, install and movement of rushing to summit after restore convenient, using safe.
Description
Technical field
The utility model belongs to engineering machinery security technology area more particularly to a kind of anti-tower crane suspension hook rushes to summit to break to restrict and fall
Safety guard.
Background technique
The 5.6.1.2 articles of GB/T 5031-2008 " derrick crane " regulation: to the tower crane of carriage amplitude varying, hook gear top
When portion rises to the minimum range of trolley frame lower end as at 800mm, raising movement should be able to be stopped immediately, but there should be descending motion.GB/
The 4.7.1.2 articles of T 9462-1999 " derrick crane technical conditions " regulation: to the tower crane of carriage amplitude varying, hook gear top
To trolley frame lower end minimum range depending on tower crane pattern and the multiplying power of hoist rope, when top slewing 2 multiplying power of tower crane
For 1000mm, when 4 multiplying power is 700mm, and when lower turret 2 multiplying power of machine is 800mm, and when 4 multiplying power is 400mm, at this time should be able to be immediately
Stop raising movement.To realize the function, the 6.3.3.1 articles of GB 5144-2006 " derrick crane safety code " regulation: tower
Machine should install the hoisting limiter of suspension hook upper limit position.
In tower crane actual moving process, exist because after supernumerary segment hoisting limiter do not adjust, non-wiring or other feelings
Shape makes hoisting limiter fail, and driver fails the case where stopping the ascending motion of suspension hook in time.It at this time will shape
At, with trolley frame bottom collision (also known as rushing to summit), hoist rope is often pulled off because rushing to summit, and is caused at the top of hook gear
Suspension hook together with lifting weight from high falling.Generally in tower crane use process, worker's work is had below, once suspension hook
And lifted weight falls, and is greatly likely to result in casualties, makes a very bad impression.It is this rush to summit because of suspension hook caused by hoist rope draw
The disconnected suspension hook falling accident caused happens occasionally in construction site.
The active service horizontal arm support carriage amplitude varying formula tower crane overwhelming majority is not equipped with anti-suspension hook and rushes to summit disconnected rope drop device, Shao Shuota
Though machine is equipped with similar device, because using spring, volume is big as energy storage and caused by restoring structure, quality weight, it has not been convenient to use and
Seriously reduce the lifting performance of tower crane, some devices are rushed to summit inconvenient, also only theoretical feasible that restore to the original state after movement
It can not temporarily be applied in practice.
Summary of the invention
Place in order to overcome the above-mentioned deficiencies of the prior art, the utility model provide a kind of anti-tower crane suspension hook and rush to summit disconnected rope pendant
The safety guard fallen, principle and structure be simple, light weight, on tower crane lifting performance influence it is limited, install and movement of rushing to summit
Restore convenient afterwards, using safe.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of anti-tower crane suspension hook is rushed to summit, disconnected rope falls
Safety guard, including the disconnected rope drop device of preventing colliding with top and mandril hook, the disconnected rope drop device of preventing colliding with top include buffering dress
It sets, anti-block overturning bar, lock wedge block, otic placode, block recovery operation bar, the otic placode includes two pieces, between two pieces of otic placodes
If the lock wedge block is installed pin shaft by block and is rotatably coupled between two otic placodes there are two symmetrical lock wedge block,
Each lock wedge block is equipped with an anti-block for limit and overturns bar, and lock wedge block is connected with block recovery operation bar,
Otic placode is equipped with arc-shaped opening for locking wedge block recovery operation, equipped with buffer unit above two lock wedge blocks, two pieces
The bottom surface of otic placode forms horn-like closing in, and one end of aforementioned mandril hook is umbrella-shaped structure and is arranged in two pieces of otic placodes,
The other end is connect with suspension hook.
In the above-mentioned technical solutions, the two sides at the otic placode top are equipped with connecting plate, are equipped between two connecting plates
Connection pin shaft for connection.
In the above-mentioned technical solutions, the buffer unit includes cushion mounting plate, cushion, and cushion is connected to buffering
Pad the bottom surface of mounting plate.
In the above-mentioned technical solutions, the cushion is connect by bolt with cushion mounting plate.
In the above-mentioned technical solutions, the cushion is equipped with gas ring device.
The beneficial effects of the utility model are: due to spring not being used to restore structure, and use the absorption of cushion form instead
Mandril hook rushes to summit and acts caused ballistic work, substantially reduces anti-suspension hook and rushes to summit the volume and weight of disconnected rope drop device, from
And influence of the disconnected rope drop device of existing big weight preventing colliding with top to tower crane lifting performance is solved, the application that block restores control stick makes
Suspension hook rush to summit movement after restore to the original state when it is easy to operate；In addition the fabricated construction of present apparatus design makes to all in-service towers
The safety guard that the disconnected rope of machine standard configuration preventing colliding with top falls is practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the part-structure side view of Fig. 1.
Fig. 3 is the work structure diagram of the utility model.
Fig. 4 uses schematic diagram for the utility model.
Wherein: 1, the disconnected rope drop device of preventing colliding with top, 2, mandril hook, 11, connecting plate, 12, installation pin shaft, 13, cushion
Mounting plate, 14, cushion, 15, anti-block overturning bar, 16, block installation pin shaft, 17, lock wedge block, 18, otic placode, 19, gear
Block recovery operation bar, 20, closing in, 3, loading trolley, 4. wirerope, 5. suspension hooks.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the utility model is described in further detail.
A kind of anti-tower crane suspension hook as shown in Figure 1 and Figure 2 is rushed to summit the safety guard that disconnected rope falls, including preventing colliding with top is disconnected
Rope drop device 1 and mandril hook 2, the disconnected rope drop device 1 of preventing colliding with top overturn bar 15, lock wedge including buffer unit, anti-block
Block 17, otic placode 18, block recovery operation bar 19, the otic placode 18 include two pieces, set that there are two symmetrical between two pieces of otic placodes 18
Lock wedge block 17, the lock wedge block 17 by block install pin shaft 16 be rotatably coupled between two otic placodes 18, each
The anti-block overturning bar 15 that wedge block 17 is equipped with one for limit is locked, lock wedge block 17 is connected with block recovery operation bar
19, otic placode 18 is equipped with the arc-shaped opening for locking wedge block recovery operation, and buffering dress is equipped with above two lock wedge blocks 17
It sets, the bottom surface of two pieces of otic placodes 19 forms horn-like closing in 20, and one end of aforementioned mandril hook 2 is umbrella-shaped structure and is arranged two
In block otic placode 18, the other end is connect with suspension hook.The disconnected rope drop device 1 of preventing colliding with top is small in size, light weight, can weld as needed
Or it is mounted on loading trolley.
In the above-mentioned technical solutions, the two sides at the top of the otic placode 18 are equipped with connecting plate 11, between two connecting plates 11
It is equipped with the connection pin shaft 12 for connection.
In the above-mentioned technical solutions, the buffer unit includes cushion mounting plate 13, cushion 14, and cushion 14 connects
In the bottom surface of cushion mounting plate 13.
In the above-mentioned technical solutions, the cushion 14 is connect by bolt with cushion mounting plate 13.
In the above-mentioned technical solutions, the cushion 14 is equipped with gas ring device.
The connecting plate 11 of the disconnected rope drop device 1 of preventing colliding with top is connected for the top of two pieces of otic placodes 18 to link together
Aperture on plate 11, the preformed hole for the disconnected rope drop device 1 of preventing colliding with top to be mounted on loading trolley by installing pin shaft 12.It is slow
It rushes pad 14 to be bolted on cushion mounting plate 13, for absorbing ballistic work, reduces mandril and link up with 2 pairs of loading trolleys
Percussion.Aperture is installed pin shaft 16 by block and is installed for installing lock wedge block 17, lock wedge block 17 on two pieces of otic placodes 18
On two pieces of otic placodes 18, and locking wedge block 17 can be along block installation 16 flexible rotating of pin shaft, to prevent lock wedge block 17 from rotating
Excessively cause to fail, be limited using the slewing area that anti-block overturns 15 pairs of bar lock wedge blocks 17.Two pieces of otic placodes 18 are made
For arrying main body structure, bottom is welded with closing in 20, it is ensured that suspension hook can make to push up during the motion with trolley
Bar hook 2 accurately heads into the disconnected rope drop device 1 of preventing colliding with top by closing in 20.Block recovery operation bar 19 is welded on lock wedge block 17
Side, the recovery operation tangled for rear hanger of rushing to summit by the disconnected rope drop device 1 of preventing colliding with top.Mandril hook 2 is in umbrella-shaped structure, can
Directly welds or be mounted on suspension hook.
As shown in figure 3, for mandril hook 2 and disconnected rope 1 operation principle schematic diagram of drop device of preventing colliding with top.Under normal circumstances,
The lock wedge block 17 of the disconnected rope drop device 1 of preventing colliding with top is in the case where self gravity and anti-block overturning bar 15 are acted in horizontal
State, the state shown in lock wedge block 17 on the right side of Fig. 3.When mandril hook 2 moves up to touching lock 17 downside inclined-plane of wedge block
When, lock wedge block 17 can rotate along block installation 16 axial line of pin shaft, during rotation, be welded on lock wedge block 17
The block recovery operation bar 19 of side can also be followed to be turned along arc groove concentric with block installation 16 axis of pin shaft on otic placode 18
Dynamic, mandril hook 2 continues up, and lock wedge block 17 is opened, due to used after locking wedge block 17 and being opened by mandril hook 2
Property blocked by anti-block overturning bar 15 when continuing to rotate to certain position, on the left of Fig. 2 shown in lock state shown in wedge block 17.
The umbrella head of mandril hook 2 is completely into 17 upside of lock wedge block of the disconnected rope drop device 1 of preventing colliding with top at this time.When mandril is hung
Hook 2 continues up until cushion 14 is arrived on top, and generated ballistic work can be absorbed by cushion 14, greatly reduce impact
Power lock wedge block 17 can should reversely rotate under Gravitative Loads in the process, and be restored to original horizontality, lock on the right side of Fig. 3
State shown in wedge block 17.When mandril hook 2 movement stop, when falling under the effect of gravity, due to two side chain wedge blocks 17 it
Between spacing be less than mandril link up with 2 umbrella positions width, mandril hook 2 can be suspended in lock wedge block 17 on without continue
It falls.If mandril hook 2 need to be taken out, block recovery operation bar 19 need to only be lifted upwards, lock wedge block 17 can be installed along block
16 axial line of pin shaft rotates, when the spacing between two side chain wedge blocks 17, which is greater than mandril, links up with the width at 2 umbrella positions,
Mandril hook 2 can easily be taken out.
As shown in figure 4, action schematic diagram occurs for the safety guard for breaking and restricting and falling of rushing to summit for anti-tower crane suspension hook.By mandril
2 welding of hook is designed to that assembling structure is assemblied on suspension hook 5 as needed, and the rear hanger 5 that will rush to summit is fallen by the disconnected rope of preventing colliding with top
Device 1 is mounted in the hole that the installation pulley crossbeam of loading trolley 3 is reserved in advance or is directly welded at load-carrying by installing pin shaft 12
Small car crossbeam bottom.When hoisting limiter fails, and driver fails to stop in time the ascending motion of suspension hook, suspension hook band
Mandril hook 2 move upwards, open the lock wedge block 17 of the disconnected rope drop device 1 of preventing colliding with top, lock wedge block 17 in self gravity
Effect is lower to be fallen after rise rapidly to horizontality, and suspension hook is continued up with mandril hook 2 until loading onto cushion 14, and mandril is hung
The part ballistic work caused by the impact of the disconnected rope drop device 1 of preventing colliding with top of hook 2 can be absorbed by cushion 14.Cushion 14 is with gas
Ring device, can emit a shrill cry after being knocked, and tower crane driver is prompted to stop lift operations.If gas rings, device damage, tower department continue
It is promoted, wirerope 4 can be tightened gradually until being pulled off, and after wirerope is pulled off, suspension hook and lifted weight are fallen under the effect of gravity
It falls, since the spacing between two side chain wedge blocks 17 is less than the width that mandril links up with 2 umbrella positions, mandril hook 2 can be hung
Lock wedge block 17 on, and mandril hook 2 by assembly or welding method and suspension hook become an entirety, therefore suspension hook and
Lifted weight can be suspended on lock wedge block 17, be fallen to achieve the purpose that anti-suspension hook rushes to summit to break to restrict.When tower crane has been overhauled
Finish, suspension hook and weight need to be transferred to ground, crawl raising is needed slightly increase suspension hook, gently by block recovery operation bar (19)
Lift upwards, lock wedge block 17 can rotate along block installation pin shaft (16) axial line, when between two side chain wedge blocks 17
When spacing is greater than the width at 2 umbrella positions of mandril hook, raising can be operated and put down suspension hook and lifted weight.
Due to the adoption of the above technical scheme, compared with the prior art, the utility model has the following advantages:
The anti-tower crane suspension hook that the utility model is announced is rushed to summit the safety guard that disconnected rope falls, due to not using spring
Restore structure, and use cushion form instead and absorb mandril hook and rush to summit and act caused ballistic work, substantially reduces anti-suspension hook punching
The volume and weight of the disconnected rope drop device in top, to solve the disconnected rope drop device of existing big weight preventing colliding with top to tower crane lifting performance
Influence, block restore control stick application so that suspension hook rush to summit movement after restore to the original state when it is easy to operate.In addition the present apparatus is set
The fabricated construction of meter makes the safety guard to fall to the disconnected rope of all in-service tower crane standard configuration preventing colliding with top practical.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (5)
- The safety guard that disconnected rope falls 1. a kind of anti-tower crane suspension hook is rushed to summit, it is characterized in that: including the disconnected dress that falls of restricting of preventing colliding with top It sets and is linked up with mandril, the disconnected rope drop device of preventing colliding with top includes buffer unit, anti-block overturning bar, lock wedge block, otic placode, block Recovery operation bar, the otic placode include two pieces, are set between two pieces of otic placodes there are two symmetrical lock wedge block, which passes through Block installation pin shaft is rotatably coupled between two otic placodes, and each lock wedge block is equipped with an anti-block for limit Bar is overturn, lock wedge block is connected with block recovery operation bar, and otic placode is equipped with for locking the arc-shaped of wedge block recovery operation Opening, two lock wedge blocks tops are equipped with buffer unit, and the bottom surface of two pieces of otic placodes forms horn-like closing in, aforementioned mandril hook One end be umbrella-shaped structure and be arranged in two pieces of otic placodes, the other end is connect with suspension hook.
- The safety guard that disconnected rope falls 2. anti-tower crane suspension hook according to claim 1 is rushed to summit, it is characterized in that: the ear Two sides at the top of plate are equipped with connecting plate, and the connection pin shaft for connection is equipped between two connecting plates.
- The safety guard that disconnected rope falls 3. anti-tower crane suspension hook according to claim 1 is rushed to summit, it is characterized in that: described slow Flushing device includes cushion mounting plate, cushion, and cushion is connected to the bottom surface of cushion mounting plate.
- The safety guard that disconnected rope falls 4. anti-tower crane suspension hook according to claim 3 is rushed to summit, it is characterized in that: described slow Punching pad is connect by bolt with cushion mounting plate.
- The safety guard that disconnected rope falls 5. anti-tower crane suspension hook according to claim 3 or 4 is rushed to summit, it is characterized in that: institute Cushion is stated equipped with gas ring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241597.7U CN209668652U (en) | 2019-02-26 | 2019-02-26 | A kind of anti-tower crane suspension hook is rushed to summit the safety guard that disconnected rope falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241597.7U CN209668652U (en) | 2019-02-26 | 2019-02-26 | A kind of anti-tower crane suspension hook is rushed to summit the safety guard that disconnected rope falls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209668652U true CN209668652U (en) | 2019-11-22 |
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ID=68569787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920241597.7U Active CN209668652U (en) | 2019-02-26 | 2019-02-26 | A kind of anti-tower crane suspension hook is rushed to summit the safety guard that disconnected rope falls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209668652U (en) |
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2019
- 2019-02-26 CN CN201920241597.7U patent/CN209668652U/en active Active
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