CN113148838A - Tower machine holds in palm rope device - Google Patents
Tower machine holds in palm rope device Download PDFInfo
- Publication number
- CN113148838A CN113148838A CN202110461843.1A CN202110461843A CN113148838A CN 113148838 A CN113148838 A CN 113148838A CN 202110461843 A CN202110461843 A CN 202110461843A CN 113148838 A CN113148838 A CN 113148838A
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- China
- Prior art keywords
- pulley
- rope
- frame
- rope supporting
- hoisting
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- 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.)
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Classifications
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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
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
- B66C11/04—Underhung trolleys
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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
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
Abstract
The invention discloses a rope supporting device of a tower crane, which comprises wheels, a support frame, traction pulleys and rope supporting pulleys, wherein the support frame is provided with three layers, the wheels are arranged at four corners of the upper layer of the support frame, the traction pulleys are arranged at the left side and the right side of the middle layer of the support frame, the rope supporting pulleys are arranged in the middle of the bottom layer of the support frame, and the rotation directions of the traction pulleys and the rope supporting pulleys are consistent. The invention is durable, can not cause interference to the operation of the crane trolley, and solves the negative influence of the droop of the steel wire rope on the performance of the tower crane.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment of tower cranes, in particular to a rope supporting device of a tower crane.
Background
A tower crane, namely a tower crane, is a hoisting steel wire rope of hoisting equipment used in building construction, and is equipment for transmitting power to hoisting articles of the tower crane. A winding drum of a hoisting mechanism on a balance arm of the tower crane is wound on a pulley block of a hoisting trolley and a lifting hook and is fixed at the tail end of a crane arm. When the trolley runs to the far end of the crane boom, the suspension distance of the steel wire rope is too long, and the steel wire rope sags due to self weight. At present, with the increasing of construction projects of high-rise large buildings, large and ultra-large tower cranes become mainstream products in the current market. The crane boom of large and ultra-large tower cranes is longer, reaches 80 meters, the diameter of the steel wire rope is thicker, the quality is higher, and the droop phenomenon is more serious. Because the position of the drooping steel wire rope is in the space of the movement track of the trolley, the rope supporting device cannot influence the normal running of the trolley, and therefore, a mode of increasing the self weight of the lifting hook is generally used in the industry at present to balance the drooping steel wire rope.
The fixed rope supporting device that has appeared at present: the single-point cantilever support is adopted to be fixed at a web member under the crane boom, and the crane trolley is provided with a trigger device. The rope supporting device is provided with a trigger wheel and a rotating device. When the trolley passes through the running process, the trigger device presses the trigger wheel to enable the torsion spring in the rotating device to rotate, the rope supporting device rotates 90 degrees, and the trolley is avoided. After the trolley passes through, the torsion spring enables the rope supporting device to rebound to the initial working position. Through triggering the torsional spring repeatedly, reach and avoid interfering the dolly and go, stabilize the effect of holding in the palm the rope.
At present, the method for increasing the weight of the lifting hook to balance the droop caused by the self weight of the lifting steel wire rope is a method for increasing the weight of the lifting hook by sacrificing the allowable lifting capacity of the design, the weight increase of the lifting hook means that the weight of a lifted object must be correspondingly reduced, the load and the use efficiency of a tower crane are greatly reduced, and the cost of a manufacturer is increased. And when the tower crane works by using the 4-multiplying-power hook group, 1/4 which is only the self weight of the hook and used for balancing the self weight of the steel wire rope is used. The sagging phenomenon of the wire rope is more serious. Although the method is simple and convenient to implement, the method can bring negative influence on the performance of the tower crane. And the rotary rebounding device of the fixed rope supporting device is an easy-fatigue accessory. Once the device fails, the rope supporting device interferes with the running of the trolley. The lifting arm is suspended at high altitude, the operable space is small, and the replacement and maintenance are extremely difficult.
Disclosure of Invention
The invention aims to provide a rope supporting device which does not influence the normal operation of a crane trolley, is durable, and does not interfere the operation of the crane trolley so as to solve the problem that the droop of a steel wire rope has negative influence on the performance of a tower crane.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a tower machine holds in palm rope device, includes wheel, support frame, traction sheave and holds in the palm the rope pulley, the support frame is equipped with the three-layer, the wheel sets up on four angles on the upper strata of support frame, the pulley that pulls is smooth to be set up in the middle of the medial left and right sides of support frame, hold in the palm the rope pulley setting in the middle of the bottom of support frame, the pulley that pulls is smooth and holds in the palm the rotation direction of rope pulley setting and all unanimous.
Furthermore, the support frame comprises a wheel frame, a middle-layer frame and a rope supporting pulley suspension frame, the middle-layer frame is a square frame which is horizontally arranged, the wheel frame is vertically fixed above the square frame, the wheels are fixedly arranged at four corners of the top of the wheel frame, a rotating shaft is arranged between every two opposite wheels for connection, the traction pulleys are arranged on two sides of the middle part of the middle-layer frame, the rope supporting pulley suspension frame is arranged in the middle of the middle-layer frame, and the rope supporting pulley is arranged below the middle of the rope supporting pulley.
Further, the rope supporting pulley suspension frame comprises a cross rod and a hanging rod, the cross rod is fixed on the middle layer frame, the hanging rod is fixedly connected to the middle of the cross rod and vertically arranged downwards, and the rope supporting pulley is arranged at the bottom of the rope supporting pulley suspension frame.
Furthermore, the two cross rods are arranged side by side, the two hanging rods are also arranged side by side, and the rope supporting pulley is arranged between the two hanging rods.
A tower crane supporting and lifting system comprises a lifting mechanism, a lifting steel wire rope, a rope supporting device, an amplitude-changing mechanism and a trolley, wherein the amplitude-changing steel wire rope penetrates through the amplitude-changing mechanism and is connected with the rope supporting device and the trolley, the lifting steel wire rope sequentially penetrates through the lifting mechanism and the rope supporting device to be connected with the trolley, and the steel wire ropes on two sides of the trolley are symmetrically arranged.
Furthermore, the hoisting steel wire rope passes through a rope supporting pulley in the rope supporting device, the drooping hoisting steel wire rope is supported by the rope supporting pulley, and the traction pulleys on the two sides of the rope supporting device are respectively connected with the amplitude-variable steel wire rope to horizontally fix the whole rope supporting device.
Furthermore, a plurality of amplitude-variable traction rollers are arranged in the amplitude-variable mechanism to fixedly pull the amplitude-variable steel wire rope.
The hoisting trolley comprises a frame, a traction pulley block, a hoisting pulley block and a hook, wherein the amplitude-variable steel wire rope penetrates through the traction pulley block to fix the frame on the position on the same horizontal line with the rope supporting device, the traction pulley block is fixed in the middle of the frame, the hook is arranged right below the hoisting pulley block, the hoisting pulley block comprises three pulleys and is arranged in a triangular shape, the amplitude-variable steel wire rope penetrates through a pulley on one side of the traction pulley block and is connected with a pulley on the lower side of the hoisting pulley block, and then is connected with a pulley on the other side of the traction pulley block, and the amplitude-variable steel wire rope penetrates through a pulley on one side of the traction pulley block and is connected with a pulley on the upper side of the hoisting pulley block.
In summary, due to the adoption of the technical scheme, the invention has the following technical effects:
(1) the rated lifting weight of the tower crane is the total amount of a lifting hook and lifting objects. The rope supporting device is installed, the lifting hook only needs to meet the strength requirement to carry out lightweight design, and the actual use performance of the tower crane is improved.
(2) The rope supporting device can stably support the drooping steel wire rope, can ensure that the crane trolley smoothly passes through, has high stability and low fault rate, and achieves the purpose of reducing the negative effects of effectively using height space and tower crane performance caused by the drooping of the hoisting steel wire rope on the tower crane.
(3) The rope supporting device provided by the invention reduces the rope winding time of a lifting rope and increases the working efficiency of a tower crane. When the tower is grouped to operate, the drooping steel wire ropes interfere with operation between tower cranes or other building equipment and buildings, and the height of the tower body can only be increased in the past. The outgoing line of the rope supporting device reduces the use cost of equipment and is beneficial to overlapping the working ranges of the tower cranes.
Drawings
FIG. 1 is a top view of the rope support of the present invention;
FIG. 2 is a side view of the rope support of the present invention;
FIG. 3 is a schematic diagram of the construction of the hoist system of the present invention;
FIG. 4 is a schematic structural view of the trolley of the present invention;
fig. 5 is a schematic structural view of a conventional hoist system;
in the attached drawings, a wheel 1, a support frame 2, a wheel frame 21, a middle layer frame 22, a rope supporting pulley suspension frame 23, a cross rod 231, a suspender 232, a traction pulley 3, a rope supporting pulley 4, a hoisting mechanism 5, a hoisting steel wire rope 6, a rope supporting device 7, an amplitude variation mechanism 8, a hoisting trolley 9, a frame 91, a traction pulley block 92, a hoisting pulley block 93, a lifting hook 94 and an amplitude variation steel wire rope 10.
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 by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with 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 fig. 1 and 2, a tower crane holds in palm rope device, includes wheel 1, support frame 2, traction sheave 3 and holds in the palm rope pulley 4, support frame 2 is equipped with the three-layer, wheel 1 sets up on four angles on the upper strata of support frame 2, traction sheave 3 sets up the middle left and right sides at support frame 2, hold in the palm rope pulley 4 and set up in the middle of the bottom of support frame 2, the rotation direction that wheel 1, traction sheave 3 and hold in the palm rope pulley 4 set up is all unanimous. The rope supporting device can stably support the drooping steel wire rope and can ensure that the hoisting trolley passes through smoothly. High stability and low failure rate. The negative effects of effectively using height space and tower crane performance brought by the droop of the hoisting steel wire rope on the tower crane are reduced.
The support frame 2 comprises a wheel frame 21, a middle layer frame 22 and a rope supporting pulley suspension frame 23, the middle layer frame is a square frame horizontally arranged, the wheel frame 21 is vertically fixed above the square frame, the wheels 1 are fixedly arranged at four corners of the top of the wheel frame, a rotating shaft is arranged between every two opposite wheels for connection, the traction pulleys are arranged on two sides of the middle layer frame, the rope supporting pulley suspension frame 23 is arranged in the middle of the middle layer frame, and the rope supporting pulley 4 is arranged below the middle of the middle layer frame.
Rope supporting pulley suspension frame 23 includes horizontal pole 231 and jib 232, the horizontal pole is fixed on the middle-layer frame, jib fixed connection is at the middle part of horizontal pole 231 and vertical setting downwards, rope supporting pulley 4 sets up in the bottom of rope supporting pulley suspension frame, and horizontal pole 231 has two and arranges side by side, jib 232 also has two and sets up side by side, rope supporting pulley 4 sets up between two jibs.
The rope supporting device is a trolley frame body of a steel structure formed by welding angle steel, channel steel and steel plates. The left side and the right side are provided with traction pulley blocks which play a role in traction on the operation of the rope supporting device. The middle part is a rope supporting pulley block which plays a role in stabilizing the rope in the running process of the device. Wheels are built on the tracks of the lower chords on the two sides of the crane boom and perform amplitude variation motion with the trolley.
Example 2
A tower crane supporting and lifting system comprises a lifting mechanism 5, a lifting steel wire rope 6, a rope supporting device 7, an amplitude variation mechanism 8 and a trolley crane 9, wherein an amplitude variation steel wire rope 10 penetrates through and is connected with the rope supporting device and the trolley crane in the amplitude variation mechanism 8, the lifting steel wire rope 6 sequentially penetrates through the lifting mechanism and the rope supporting device to be connected with the trolley crane 9, and the steel wire ropes on two sides of the trolley crane 9 are symmetrically arranged. The rated lifting weight of the tower crane is the total amount of the lifting hook and lifting objects, the rope supporting device is installed, the lifting hook only needs to meet the strength requirement to carry out lightweight design, and the actual use performance of the tower crane is improved.
The hoisting steel wire rope 6 passes through a rope supporting pulley in the rope supporting device, the drooping hoisting steel wire rope is supported by the rope supporting pulley, the traction pulleys on two sides of the rope supporting device 7 are respectively connected with the amplitude-variable steel wire rope, the whole rope supporting device 7 is horizontally fixed, and the amplitude-variable mechanism 8 is internally provided with a plurality of amplitude-variable traction rollers for traction and fixation of the amplitude-variable steel wire rope.
Wherein hold in palm rope device 7, including wheel 1, support frame 2, traction sheave 3 and support rope pulley 4, the support frame is equipped with the three-layer, the wheel sets up on four angles on the upper strata of support frame, the smooth left and right sides that sets up at the support frame middle level of traction sheave, hold in the palm the rope pulley setting in the middle of the bottom of support frame, the rotation direction that wheel, traction sheave smooth and support rope pulley setting is all unanimous. The structure of the rope supporting device is consistent with that of the embodiment 1, the rope supporting device can stably support a drooping steel wire rope, and the crane trolley can be guaranteed to pass through smoothly. High stability and low failure rate. The negative effects of the effective use of height space and the performance of the tower crane, which are brought to the tower crane by the droop of the hoisting steel wire rope, are reduced; the rope supporting device reduces the rope winding time of the lifting rope and increases the working efficiency of the tower crane. When the tower is grouped to operate, the drooping steel wire ropes interfere with operation between tower cranes or other building equipment and buildings, and the height of the tower body can only be increased in the past. The outgoing line of the rope supporting device reduces the use cost of equipment and is beneficial to overlapping the working ranges of the tower cranes.
The trolley 9 comprises a frame 91, a traction pulley block 92, a hoisting pulley block 93 and a hook 94, wherein the amplitude-variable steel wire rope penetrates through the traction pulley block to fix the frame on the position on the same horizontal line with the rope supporting device, the traction pulley block is fixed in the middle of the frame, the hook is arranged under the hoisting pulley block, the hoisting pulley block comprises three pulleys and is arranged in a triangle shape, the amplitude-variable steel wire rope penetrates through a pulley on one side in the traction pulley block and is connected with a pulley on the lower side in the hoisting pulley block, and then is connected with a pulley on the other side in the traction pulley block, and the hoisting steel wire rope penetrates through a pulley on one side in the traction pulley block and is connected with a pulley on the upper side in the hoisting pulley block.
The invention mainly supports the steel wire rope through a device similar to a trolley, and reduces the droop amplitude of the lifting steel wire rope. The two sides of the hoisting trolley are respectively provided with a front rope supporting trolley and a rear rope supporting trolley, and the left end and the right end of the rope supporting trolley are provided with traction guide wheels. The steel wire rope bypasses the two sides of the rope supporting trolley to pull the guide wheels as shown in the figure, one end of the steel wire rope is fixed on the crane jib, and the other end of the steel wire rope is respectively connected with the amplitude variation mechanism and the crane trolley. A set of constant speed linkage devices with unchanged relative positions are formed. In order to realize the novel effect, the lower side part in the middle of the rope supporting trolley is provided with a rope supporting pulley, and the rope supporting trolley plays a role in supporting and carrying the drooping steel wire rope.
The invention uses the luffing mechanism to drive the rope supporting device and the trolley by using the pulley block, so that the relative positions of the rope supporting device and the trolley are kept unchanged and the rope supporting device and the trolley move in the same direction at the same speed. The rope supporting device can support and lift the steel wire rope on the premise of not interfering the operation of the crane trolley.
The rope supporting device and the hoisting trolley can run simultaneously; the original structural components of the tower crane can be used, and the rope supporting device simulates the structural form of a crane trolley. The rope supporting device can play a rope supporting role, and the problems that the lifting hook is designed carelessly due to the fact that a steel wire rope is drooped, and the lifting capacity is allowed by the waste design are solved. The rope supporting device is linked with the trolley, so that the problem that the rope supporting device influences the running of the trolley is solved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. A tower machine holds in palm rope device which characterized in that: including wheel, support frame, traction sheave and support rope pulley, the support frame is equipped with the three-layer, the wheel sets up on four angles on the upper strata of support frame, the pulley that pulls is slided and is set up in the middle-level left and right sides of support frame, support rope pulley sets up in the middle of the bottom of support frame, the pulley that pulls is slided and holds in the palm the rotation direction that rope pulley set up all unanimously.
2. The rope supporting device of the tower crane according to claim 1, characterized in that: the support frame comprises a wheel frame, a middle layer frame and a rope supporting pulley suspension frame, the middle layer frame is a square frame which is horizontally arranged, the wheel frame is vertically fixed above the square frame, wheels are fixedly arranged at four corners of the top of the wheel frame, two opposite wheels are connected through a rotating shaft, traction pulleys are arranged on two sides of the middle part of the middle layer frame, the rope supporting pulley suspension frame is arranged in the middle of the middle layer frame, and the rope supporting pulley suspension frame is arranged below the middle of the rope supporting pulley.
3. The rope supporting device of the tower crane as claimed in claim 2, wherein: the rope supporting pulley suspension frame comprises a cross rod and a hanging rod, the cross rod is fixed on the middle layer frame, the hanging rod is fixedly connected to the middle of the cross rod and vertically arranged downwards, and the rope supporting pulley is arranged at the bottom of the rope supporting pulley suspension frame.
4. The rope supporting device of the tower crane according to claim 3, characterized in that: the two cross rods are arranged side by side, the two hanging rods are arranged side by side, and the rope supporting pulley is arranged between the two hanging rods.
5. A hoisting system using a tower crane rope supporting device according to claims 1-4, characterized in that: the hoisting device comprises a hoisting mechanism, a hoisting steel wire rope, a rope supporting device, an amplitude-changing mechanism and a trolley, wherein the amplitude-changing steel wire rope penetrates through the amplitude-changing mechanism and is connected with the rope supporting device and the trolley, the hoisting steel wire rope sequentially penetrates through the hoisting mechanism and the rope supporting device to be connected with the trolley, and the steel wire ropes on two sides of the trolley are symmetrically arranged.
6. A tower crane hoisting system as claimed in claim 5, wherein: the hoisting steel wire rope penetrates through a rope supporting pulley in the rope supporting device, the drooping hoisting steel wire rope is supported through the rope supporting pulley, and the traction pulleys on the two sides of the rope supporting device are respectively connected with the amplitude-variable steel wire rope to horizontally fix the whole rope supporting device.
7. A tower crane hoisting system as claimed in claim 6, wherein: and a plurality of amplitude-variable traction rollers are arranged in the amplitude-variable mechanism to fixedly pull the amplitude-variable steel wire rope.
8. A tower crane hoisting system as claimed in claim 5, wherein: the trolley comprises a frame, a traction pulley block, a hoisting pulley block and a lifting hook, wherein an amplitude-variable steel wire rope penetrates through the traction pulley block to fix the frame on the position on the same horizontal line with the rope supporting device, the traction pulley block is fixed in the middle of the frame, the lifting hook is arranged under the hoisting pulley block, the hoisting pulley block comprises three pulleys and is arranged in a triangular shape, the amplitude-variable steel wire rope penetrates through a pulley on one side in the traction pulley block and then is connected with a pulley on the lower side in the hoisting pulley block and then is connected with a pulley on the other side in the traction pulley block, and the amplitude-variable steel wire rope penetrates through a pulley on one side in the traction pulley block and then is connected with a pulley on the upper side in the hoisting pulley block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110461843.1A CN113148838A (en) | 2021-04-27 | 2021-04-27 | Tower machine holds in palm rope device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110461843.1A CN113148838A (en) | 2021-04-27 | 2021-04-27 | Tower machine holds in palm rope device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113148838A true CN113148838A (en) | 2021-07-23 |
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ID=76871929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110461843.1A Pending CN113148838A (en) | 2021-04-27 | 2021-04-27 | Tower machine holds in palm rope device |
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| Country | Link |
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| CN (1) | CN113148838A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380215A (en) * | 2022-03-26 | 2022-04-22 | 河南卫华重型机械股份有限公司 | Tower crane for building |
-
2021
- 2021-04-27 CN CN202110461843.1A patent/CN113148838A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380215A (en) * | 2022-03-26 | 2022-04-22 | 河南卫华重型机械股份有限公司 | Tower crane for building |
| CN114380215B (en) * | 2022-03-26 | 2022-08-23 | 河南卫华重型机械股份有限公司 | Tower crane for building |
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