CN215101663U - Main pulley rope-dropping prevention device for tower crane amplitude-variable trolley - Google Patents
Main pulley rope-dropping prevention device for tower crane amplitude-variable trolley Download PDFInfo
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- CN215101663U CN215101663U CN202120738392.7U CN202120738392U CN215101663U CN 215101663 U CN215101663 U CN 215101663U CN 202120738392 U CN202120738392 U CN 202120738392U CN 215101663 U CN215101663 U CN 215101663U
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Abstract
The utility model discloses a tower machine becomes width of cloth dolly main pulley rope escape prevention device, including last rope stopping device, side direction rope stopping device and anticreep rope subassembly, go up the rope stopping device and fix on becoming width of cloth dolly and span directly over the pulley, separate at a certain distance between the highest point of this last rope stopping device and pulley, this distance is less than the diameter of winding wire rope on the pulley, side direction rope stopping device is fixed and is cut into the position that the skidding is cut into at wire rope on becoming width of cloth dolly, is equipped with the clearance between this side direction rope stopping device and the pulley and this clearance is less than wire rope's diameter, anticreep rope subassembly sets up along the border curve of pulley lower half, and this anticreep rope subassembly sets up and fixes on becoming width of cloth dolly at pulley both sides and both ends, and forms the clearance between anticreep rope subassembly and the pulley. The utility model discloses a device mainly protects wire rope to pulley top and side to guarantee the normal use of tower machine under actual complex operating mode.
Description
Technical Field
The utility model relates to a tower machine equipment technical field specifically belongs to a tower machine becomes width of cloth dolly main pulley anticreep rope device.
Background
The tower crane is a rotary crane with a movable arm arranged at the upper part of a high-rise tower body, has a large working range, and is mainly used for vertical transportation of materials and component installation in the construction of multi-storey and high-rise buildings. The tower crane is provided with a metal structure, a working mechanism and an electrical system, wherein the metal structure comprises a tower body, a movable arm, a base, an attachment rod and the like, and the working mechanism comprises four parts of lifting, amplitude variation, rotation and walking. The electric system comprises a motor, a controller, a power distribution frame, a connecting line, a signal and lighting device and the like, and the construction elevator cage is used as a driving and load-carrying part of the construction elevator and is an important structural part of the construction elevator. The working mechanism comprises a lifting system, the lifting system of the existing tower crane is a steel wire rope winding system, a steel wire rope is wound into a pulley on an amplitude variation trolley through the pulley, the number of the pulleys on the amplitude variation trolley is large, and the steel wire rope is a structural member which is most easily worn by the steel wire rope in the tower crane.
In the actual working process of the tower crane, the steel wire rope is influenced by external loads such as the inertia of a lifting hook and a lifting weight, wind load and the like besides the impact vibration of lifting, lifting and amplitude-variable rotation, so that the actual working condition is complex and changeable, the steel wire rope cannot keep an ideal working state, and certain jumping and each direction deflection angle can exist during working. The radial run-out of the steel wire rope along the pulley can cause the steel wire rope to be separated from the upper part of the pulley, and further cause abrasion to structures such as a trolley beam and the like.
However, in the process of rotation of the tower crane, the hook and the sling weight are affected by centrifugal force, inertia, wind load and other factors, the steel wire rope still may be separated from the rope groove below the lateral anti-drop device and embedded into the gap between the pulley and the trolley structure body, when the tower crane is in heavy load and emergency braking, the pulley rim is easily extruded and damaged, and the abrasion of the steel wire rope and the trolley structure body affects the safe use of the tower crane. The existing rope-dropping-preventing system is not comprehensive enough in the dropping-preventing protection of the steel wire rope, the steel wire rope still possibly drops off from the flange below and is embedded into the gap between the main pulley and the structure body, so that the damage of the flange and the abrasion of the steel wire rope and the trolley structure body are caused, and the safe use of the tower crane is influenced. Therefore, a device capable of ensuring normal use of the tower crane under actual complex working conditions needs to be found.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tower machine becomes width of cloth dolly owner pulley anticreep rope device, the device mainly protect wire rope to pulley top and side to guarantee the normal use of tower machine under actual complex operating mode, solve the tower machine when the gyration, wire rope deviates from the main pulley and imbeds the pulley and becomes width of cloth dolly structure clearance in, cause wire rope, main pulley and become the impaired problem of width of cloth dolly. In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a tower machine becomes width of cloth dolly owner pulley anticreep rope device, includes last rope gear, side direction rope gear and anticreep rope subassembly, go up the rope gear and fix on becoming width of cloth dolly and span directly over the pulley, should go up and have a certain distance between the highest point of rope gear and pulley, this distance is less than the diameter of the wire rope of winding on the pulley, side direction rope gear is fixed on becoming width of cloth dolly and is spaned and cut into the position of skidding at wire rope, is equipped with the clearance between this side direction rope gear and the pulley and this clearance is less than wire rope's diameter, anticreep rope subassembly sets up along the border curve of pulley lower half, and this anticreep rope subassembly sets up and fixes on becoming width of cloth dolly at pulley both sides and both ends, and forms the clearance between anticreep rope subassembly and the pulley.
Further, the upper rope blocking device comprises a supporting piece and a blocking piece, the supporting piece is welded and fixed on the amplitude variation trolley, and the blocking piece is fixed at the top of the supporting piece and spans over the pulley.
Furthermore, the two supporting pieces are respectively arranged on two sides of the pulley, the blocking pieces are straight bars, and grooves are formed in positions, facing the pulley, of the straight bars.
Furthermore, the lateral rope blocking device is a round rod, one end of the round rod is fixed on the amplitude-variable trolley, and the other end of the round rod extends to enable the whole round rod to be parallel to the rotating shaft of the pulley.
Furthermore, the anti-falling rope assembly is two arc-shaped metal strips with upward openings, the two metal strips are respectively arranged on two sides below the pulley, the lower edge of each metal strip is lower than the edge of the pulley, two braided end parts of each metal strip horizontally extend to form a fixing part, and the fixing part is welded and fixed on a cross beam of the amplitude-variable trolley.
Furthermore, the metal strips are circular, the included angle between the two metal strips is consistent with the angles of the two sides of the rope groove in the pulley, and a certain gap is formed between the metal strips and the edges of the two sides of the pulley.
A main pulley anti-rope-dropping method for a tower crane luffing trolley comprises the steps that an upper rope blocking device is fixed in a stretching and welding mode above a pulley of the tower crane luffing trolley in a stretching and welding mode, a lateral rope blocking device is fixed on one side, where a steel wire rope enters the pulley, and stretches across one side of the pulley, and anti-rope-dropping components are fixedly arranged on two sides below the pulley, wherein gaps are formed among the upper rope blocking device, the lateral rope blocking device and the anti-rope-dropping components and the pulley, the gaps are smaller than the diameter of the steel wire rope, the steel wire rope sequentially penetrates through the pulley of the luffing trolley and is tightly attached to a rope groove of the pulley, a hoisting system is formed by the aid of the suspended pulley and a lifting hook, and the steel wire rope is limited in the rope groove of the pulley by the upper rope blocking device, the lateral rope blocking device and the anti-rope-dropping components when a heavy object is hoisted.
Furthermore, the anti-falling rope assembly is an arc-shaped metal sheet, the metal sheet is arranged under the pulley in a hanging mode and arranged along the radian of the lower edge of the pulley, and the edges of the two sides of the metal sheet are upwards tilted to wrap the lower opening of the rope groove of the pulley.
To sum up, because the utility model adopts the above technical scheme, the utility model discloses following technological effect has:
(1) the device of the utility model provides comprehensive protection for the anti-drop system of the main pulley of the amplitude variable trolley, and avoids the problem that the steel wire rope, the main pulley and the amplitude variable trolley are damaged because the steel wire rope is dropped from the main pulley and is embedded into the gap between the pulley and the amplitude variable trolley structure body;
(2) the utility model has the advantages that the anti-drop rope component limits the deflection angle of the steel wire rope in the pulley when the tower crane rotates, has simple structure, does not influence the whole structure of the whole luffing trolley and the replacement and disassembly of the pulley, and provides additional protection for the lower part of the main pulley;
(3) the utility model discloses a device setting forms hoist system on the pulley of becoming width of cloth dolly, sets up the lifting hook on this hoist system, and it is impaired to place the pulley striking when the lifting hook dashes the top.
(4) The utility model discloses an anticreep rope device has carried out fine replenishment to former wire rope anticreep system, and the adaptation tower machine that anticreep rope system after the improvement can be better is at the complicated operating mode of in-service work, reduces wire rope as far as possible and deviates from the grooving and causes wire rope, pulley and the risk that becomes width of cloth dolly damage, provides better guarantee for the safe in utilization of tower machine.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present invention arranged on a luffing carriage;
FIG. 2 is a schematic side view of the device of the present invention mounted on a luffing carriage;
fig. 3 is an installation schematic view of the lateral rope stopping device of the present invention;
fig. 4 is an installation schematic diagram of the anti-slip rope assembly of the present invention;
in the drawings: the device comprises an upper rope blocking device 1, a supporting member 11, a blocking member 12, a lateral rope blocking device 2, an anti-falling rope assembly 3, a metal strip 31, a fixing part 32 and a variable amplitude trolley 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
As shown in figure 1, the main pulley rope-dropping prevention device of the tower crane luffing trolley comprises an upper rope-blocking device 1, a lateral rope-blocking device 2 and a rope-dropping prevention component 3, wherein the upper rope-blocking device 1 is fixed on the luffing trolley 4 and stretches across the pulley, a certain distance is arranged between the upper rope-blocking device 1 and the highest position of the pulley, the distance is smaller than the diameter of a steel wire rope wound on the pulley, the lateral rope-blocking device 2 is fixed on the luffing trolley and stretches across the position where the steel wire rope cuts into a pulley, a gap is arranged between the lateral rope-blocking device 2 and the pulley and is smaller than the diameter of the steel wire rope, the rope-dropping prevention component 3 is arranged along the edge curve of the lower half part of the pulley, the rope-dropping prevention component is arranged at two sides of the pulley, two ends of the rope-dropping prevention component are fixed on the luffing trolley 4, a gap is formed between the rope-dropping prevention component and the pulley, and the steel wire rope is clamped in a rope groove of the pulley through the upper rope-blocking device 1, the lateral rope-blocking device 2 and the rope-dropping prevention component 3, the steel wire rope is prevented from being separated from the pulley.
As shown in fig. 2, the upper rope retaining device 1 comprises a support member 11 and a stopper 12, wherein the support member 11 is welded and fixed on the luffing trolley, and the stopper 12 is fixed on the top of the support member 11 and spans over the pulley; the two supporting pieces 11 are respectively arranged at two sides of the pulley, the blocking pieces 12 are straight rods, grooves are arranged on the positions, facing the pulley, of the straight rods 12, the steel wire ropes to be separated from the pulley are clamped through the blocking pieces 12, and the grooves are arranged to form a moving space of the steel wire ropes so as to reduce friction.
As shown in fig. 3, the lateral rope-blocking device 2 is a round bar, one end of the round bar is fixed on the amplitude-variable trolley, the other end of the round bar extends to enable the whole round bar to be parallel to the rotating shaft of the pulley, and the steel wire rope is clamped on the pulley through the round bar.
As shown in fig. 4, the anti-dropping rope assembly 3 is two arc-shaped metal strips 31 with upward openings, the two metal strips 31 are respectively arranged at two sides below the pulley, the lower edge of the metal strip is lower than the edge of the pulley, two braided end parts of the metal strip 31 horizontally extend to form a fixing part 32, and the fixing part 32 is welded and fixed on a cross beam of the amplitude-variable trolley; the circular of metal strip 31, and the contained angle between two metal strips 31 is unanimous with the angle of rope groove both sides in the pulley, certain space has between this metal strip 31 and the pulley both sides border, curved metal strip sets up along the pulley border and is equivalent to the degree of depth that has increased pulley bottom rope groove, and set up to the angle unanimous with the rope groove and can make the wire rope of rope groove tangent with the metal strip as far as possible, under the condition that does not increase pulley diameter and become width of cloth dolly structure size, the degree of depth of pulley rope groove has been increased, make wire rope be difficult for deviating from the rope groove.
Example 2
A main pulley anti-rope-dropping method for a tower crane luffing trolley comprises the steps that an upper rope blocking device is fixed in a stretching and welding mode above a pulley of the tower crane luffing trolley in a stretching and welding mode, a lateral rope blocking device is fixed on one side, where a steel wire rope enters the pulley, and stretches across one side of the pulley, and anti-rope-dropping components are fixedly arranged on two sides below the pulley, wherein gaps are formed among the upper rope blocking device, the lateral rope blocking device and the anti-rope-dropping components and the pulley, the gaps are smaller than the diameter of the steel wire rope, the steel wire rope sequentially penetrates through the pulley of the luffing trolley and is tightly attached to a rope groove of the pulley, a hoisting system is formed by the aid of the suspended pulley and a lifting hook, and the steel wire rope is limited in the rope groove of the pulley by the upper rope blocking device, the lateral rope blocking device and the anti-rope-dropping components when a heavy object is hoisted.
The upper rope blocking device 1 comprises a supporting part 11 and a blocking part 12, wherein the supporting part 11 is fixedly welded on the amplitude-variable trolley, and the blocking part 12 is fixed at the top of the supporting part 11 and spans over the pulley; the two supporting pieces 11 are respectively arranged at two sides of the pulley, the blocking pieces 12 are straight rods, grooves are arranged on the positions, facing the pulley, of the straight rods 12, the steel wire ropes to be separated from the pulley are clamped through the blocking pieces 12, and the grooves are arranged to form a moving space of the steel wire ropes so as to reduce friction.
The lateral rope blocking device 2 is a round rod, one end of the round rod is fixed on the amplitude-variable trolley, the other end of the round rod extends to enable the whole round rod to be parallel to a rotating shaft of the pulley, and the steel wire rope is clamped on the pulley through the round rod.
The anti-falling rope assembly 3 is composed of two arc-shaped metal strips 31 with upward openings, the two metal strips 31 are respectively arranged on two sides below the pulley, the lower edge of each metal strip is lower than the edge of the pulley, two braided end parts of each metal strip 31 horizontally extend to form a fixing part 32, and the fixing parts 32 are welded and fixed on a cross beam of the amplitude-variable trolley; the circular of metal strip 31, and the contained angle between two metal strips 31 is unanimous with the angle of rope groove both sides in the pulley, certain space has between this metal strip 31 and the pulley both sides border, curved metal strip sets up along the pulley border and is equivalent to the degree of depth that has increased pulley bottom rope groove, and set up to the angle unanimous with the rope groove and can make the wire rope of rope groove tangent with the metal strip as far as possible, under the condition that does not increase pulley diameter and become width of cloth dolly structure size, the degree of depth of pulley rope groove has been increased, make wire rope be difficult for deviating from the rope groove.
Example 3
The anti-falling rope assembly in the embodiment is an arc-shaped metal sheet, the metal sheet is arranged under the pulley in a suspending mode and arranged along the radian of the lower edge of the pulley, the edges of the two sides of the metal sheet are upwards tilted to wrap the lower opening of the rope groove of the pulley, and other implementations are consistent with those in embodiment 2.
The anti-falling rope assembly in the embodiment 1 and the embodiment 2 is positioned on the main pulley, 2 pulleys are configured on one pulley and are respectively positioned on two axial sides of the pulley, and the front and back deflection of the steel wire rope can be protected. The anti-falling rope assembly is formed by bending round steel into an arc concentric with the pulley, the clearance between the inner diameter of the round steel and the diameter of the pulley is usually 1/4 of the diameter of the steel wire rope, and straight edges of about 50mm are reserved on two sides of the round steel for welding; one side of the round steel is welded on a beam of the amplitude variable trolley, and the other side of the round steel is free of support in the middle of the pulley frame, so that the base plate needs to be welded to the lower side of the pulley frame firstly, and then the round steel is welded to the base plate.
When the distance between the anti-dropping rope assemblies is designed, the straight line of the rope groove is tangent to the round steel as much as possible, and under the condition that the diameter of the pulley and the structural size of the amplitude-variable trolley are not increased, the depth of the rope groove of the pulley is increased, so that the steel wire rope is not easy to drop out of the rope groove; the steel wire rope without the anti-falling device can gradually fall out of the rope groove along with the increase of the deflection angle during rotation, and is embedded into a gap between the pulley and the structural body, so that the problems of pulley rim damage, steel wire rope and structural body abrasion and the like are easily caused under the working conditions of heavy load and the like. Although the rope-dropping prevention device can generate a larger deflection angle outside the device, the maximum deflection angle in the rope groove is limited by the rope-dropping prevention device, and the rope can not drop out of the rope groove all the time no matter how the steel wire rope deflects, so that the steel wire rope, the pulley and the amplitude-variable trolley are protected from loss.
The rope-slipping prevention device can also be used as a protection device of the lower part of the pulley, when the lifting hook rushes to the top, the lifting hook cannot impact the pulley because the arc diameter of the rope-slipping prevention component is larger than the diameter of the pulley, so that the pulley is effectively protected, the main pulley rope-slipping prevention device effectively supplements a steel wire rope-slipping prevention system of the amplitude-variable trolley, and more comprehensive protection is provided for the tower crane to work under complex working conditions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a tower machine becomes width of cloth dolly main pulley anticreep rope device which characterized in that: including last rope stopping device, side direction rope stopping device and anticreep rope subassembly, go up the rope stopping device and fix on becoming width of cloth dolly and span directly over the pulley, there is a certain distance at a distance between the highest point of this last rope stopping device and pulley, this distance is less than the diameter of the wire rope of winding on the pulley, the side direction rope stopping device is fixed on becoming width of cloth dolly and is spaned and cut into the position that the skidding at wire rope, is equipped with the clearance between this side direction rope stopping device and the pulley and this clearance is less than wire rope's diameter, anticreep rope subassembly sets up along the border curve of pulley lower half, and this anticreep rope subassembly sets up and fixes on becoming width of cloth dolly at pulley both sides and both ends, and forms the clearance between anticreep rope subassembly and the pulley.
2. The anti-rope-release device for the main pulley of the tower crane luffing small car according to claim 1, characterized in that: the rope blocking device comprises a supporting piece and a blocking piece, the supporting piece is welded and fixed on the amplitude-variable trolley, and the blocking piece is fixed at the top of the supporting piece and spans over the pulley.
3. The anti-rope-release device for the main pulley of the tower crane luffing small car according to claim 2, characterized in that: the two supporting pieces are respectively arranged on two sides of the pulley, the blocking piece is a straight rod, and a groove is formed in the position, opposite to the pulley, of the straight rod.
4. The anti-rope-release device for the main pulley of the tower crane luffing small car according to claim 1, characterized in that: the lateral rope blocking device is a round rod, one end of the round rod is fixed on the amplitude-variable trolley, and the other end of the round rod extends to enable the whole round rod to be parallel to a rotating shaft of the pulley.
5. The anti-rope-release device for the main pulley of the tower crane luffing small car according to claim 1, characterized in that: the anti-falling rope assembly is composed of two arc-shaped metal strips with upward openings, the two metal strips are arranged on two sides below the pulley respectively, the lower edge of each metal strip is lower than the edge of the pulley, two braided end parts of each metal strip extend horizontally to form a fixing part, and the fixing part is welded and fixed on a cross beam of the amplitude-variable trolley.
6. The anti-rope-release device for the main pulley of the tower crane luffing small car according to claim 5, wherein: the metal strips are circular, the included angle between the two metal strips is consistent with the angles of the two sides of the rope groove in the pulley, and a certain gap is formed between the metal strips and the edges of the two sides of the pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738392.7U CN215101663U (en) | 2021-04-13 | 2021-04-13 | Main pulley rope-dropping prevention device for tower crane amplitude-variable trolley |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738392.7U CN215101663U (en) | 2021-04-13 | 2021-04-13 | Main pulley rope-dropping prevention device for tower crane amplitude-variable trolley |
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| CN215101663U true CN215101663U (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023601A (en) * | 2021-04-13 | 2021-06-25 | 广西建工集团建筑机械制造有限责任公司 | Main pulley rope-dropping prevention device for tower crane amplitude-variable trolley |
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2021
- 2021-04-13 CN CN202120738392.7U patent/CN215101663U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023601A (en) * | 2021-04-13 | 2021-06-25 | 广西建工集团建筑机械制造有限责任公司 | Main pulley rope-dropping prevention device for tower crane amplitude-variable trolley |
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