CN111747329A - Tower crane becomes width of cloth dolly - Google Patents
Tower crane becomes width of cloth dolly Download PDFInfo
- Publication number
- CN111747329A CN111747329A CN202010830683.9A CN202010830683A CN111747329A CN 111747329 A CN111747329 A CN 111747329A CN 202010830683 A CN202010830683 A CN 202010830683A CN 111747329 A CN111747329 A CN 111747329A
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- China
- Prior art keywords
- clamping
- notch
- tower crane
- mounting bracket
- tensioning
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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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- 239000004744 fabric Substances 0.000 title description 4
- 238000009434 installation Methods 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims description 49
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000004888 barrier function Effects 0.000 claims 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 22
- 239000010959 steel Substances 0.000 abstract description 22
- 230000005465 channeling Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
-
- 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
- B66C23/82—Luffing gear
Abstract
A tower crane luffing dolly comprises an installation support and at least one pulley arranged in an installation space of the installation support, wherein a first installation shaft is arranged on the installation support, the pulley is installed on the first installation shaft, and a notch is formed in the peripheral surface of the pulley; along the axial direction of the first mounting shaft; still be equipped with on the installing support and block the structure, it includes a plurality of successions to block the structure the side of notch extends in order to set up first stopper in the installation clearance, the notch at least part stretches into the setting two in the space that first stopper encloses. Through setting up the side extension from the notch and stopping the body with the first that sets up to the installation clearance in, stop the structure and can effectively prevent to install the steel wire rope in the notch and deviate from to the side along the notch, avoid steel wire rope to move to the installation clearance in and take place troubles such as channeling, take off the groove, jump rope, card rope, improved the security of tower crane amplitude variation dolly in the use.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to the technical field of a crane luffing mechanism.
Background
With the continuous development of urbanization, the amount of urban construction projects is greatly increased, and tower cranes are widely used as main construction hoisting machinery in construction projects. At present, the horizontal arm trolley variable-amplitude tower crane is mainly used, and can be divided into a pointed end type tower crane and a flat head type tower crane, and the flat head type trolley variable-amplitude tower crane is more and more accepted by the market due to the advantages of the flat head type trolley variable-amplitude tower crane along with the popularization of the country to the assembly type building. The horizontal arm trolley luffing tower crane mainly comprises a luffing trolley running on a crane boom, wherein the lower end of the luffing trolley is connected with a lifting hook and a heavy object through a hoisting steel wire rope, the upper end of the luffing trolley is arranged on a lower chord of the arm support through a guide wheel set of the luffing trolley, and the luffing trolley is pulled by a luffing mechanism and the steel wire rope to move back and forth. The steel wire rope is the most main traction part in the movement of the whole tower crane, and the trolley movement and the lifting of the lifting hook are realized through the steel wire rope, so that the steel wire rope safety device on the trolley is very important and is directly related to the safe use of the tower crane. However, in the practical use of the trolley, the problem that the steel wire rope falls off still exists, and certain potential safety hazards exist.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a tower crane luffing trolley so as to improve the safety of the tower crane luffing trolley in the use process.
In order to achieve the purpose, the invention is realized according to the following technical scheme:
a tower crane luffing dolly comprises an installation support and at least one pulley arranged in an installation space of the installation support, wherein a first installation shaft is arranged on the installation support, the pulley is installed on the first installation shaft, and a notch is formed in the peripheral surface of the pulley; along the axial direction of the first mounting shaft, mounting gaps are arranged between the mounting bracket and the adjacent pulleys and/or between the pulleys; still be equipped with on the installing support and block the structure, it includes a plurality of successions to block the structure the side of notch extends in order to set up first stopper in the installation clearance, the notch at least part stretches into the setting two in the space that first stopper encloses.
Preferably, the blocking structure further comprises a second blocking body, two ends of the second blocking body are connected with the mounting bracket, and the first blocking body is mounted on the second blocking body; the second stops the body and extends the setting along the axis direction of first installation axle, the second stops the body setting and is in the opening side of notch.
Preferably, the first blocking body is annular, the second blocking body is a shaft body, the first blocking body is sleeved on the second blocking body, and the first blocking body is rotatably connected with the second blocking body.
Preferably, supporting plates are arranged at two ends of the second blocking body, one end of each supporting plate is connected with the second blocking body, the other end of each supporting plate is fixedly connected with the mounting bracket, and the thickness of each supporting plate is smaller than the diameter of the second blocking body.
Preferably, the tower crane luffing trolley further comprises a tensioning mechanism, the tensioning mechanism comprises a second mounting shaft arranged on the mounting bracket, the tensioning mechanism further comprises a tensioning gear arranged on the second mounting shaft, and a fixing part for fixing the traction rope is arranged on the tensioning gear; tensioning teeth distributed circumferentially are arranged on the peripheral surface of the tensioning gear, and first clamping notches are formed in the tensioning teeth; the two ends of the second mounting shaft are provided with a first mounting position and a second mounting position which are connected with the mounting bracket, and the length of the second mounting shaft from the first mounting position to the second mounting position is greater than the thickness of the tensioning gear; straining device still includes the chucking body, the chucking body be equipped with be used for with the second chucking breach of second installation axle butt, still be equipped with on the chucking body be used for with the first arch of first chucking breach butt.
Preferably, the tensioning mechanism further comprises a sleeve sleeved on the second mounting shaft; one end of the sleeve is fixedly connected with the tensioning gear, and the other end of the sleeve is abutted against the mounting bracket; the sleeve is provided with a clamping section which is used for being abutted against the second clamping notch.
Preferably, the mounting bracket is provided with an extension portion extending along a radial direction of the tension gear, and an extending gap into which the clamping body extends is provided between the extension portion and the tension gear.
Preferably, one end, far away from the clamping body, of the first protrusion is provided with a second protrusion, and the second protrusion comprises a protrusion part deviating from the opening direction of the first clamping notch.
Preferably, the tensioning mechanism further comprises a first clamping pin shaft abutted to the first clamping notch, a waist-shaped hole connected with the first clamping pin shaft is formed in the mounting support, and the first clamping pin shaft is provided with a moving path moving along the waist-shaped hole.
Preferably, the tensioning mechanism further comprises a second clamping pin shaft abutted to the first clamping gap, two ends of the second clamping pin shaft are fixedly connected with the mounting bracket, and an accommodating space for accommodating the tensioning teeth is formed between the second clamping pin shaft and the first clamping pin shaft.
Compared with the prior art, the invention has the beneficial effects that:
through setting up the side extension from the notch and stopping the body with the first that sets up to the installation clearance in, stop the structure and can effectively prevent to install the steel wire rope in the notch and deviate from to the side along the notch, avoid steel wire rope to move to the installation clearance in and take place the scurrying, take off the groove, jump rope, card trouble such as rope, reduced the fault rate of change width of cloth dolly, improved the security of tower crane change width of cloth dolly in the use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a front view of an embodiment of a tower crane luffing dolly of the invention.
FIG. 2 is a left side view of an embodiment of a blocking structure in a tower crane luffing dolly of the present invention.
FIG. 3 is a left side view of an embodiment of a blocking structure in a tower crane luffing dolly of the present invention.
FIG. 4 is a schematic perspective view of an embodiment of a tensioning mechanism in a luffing dolly of a tower crane according to the invention.
FIG. 5 is a schematic perspective view of an embodiment of a clamping body in a luffing dolly of a tower crane according to the invention.
Wherein:
1-mounting bracket, 1-extension part, 12-kidney-shaped hole, 21-first mounting shaft, 22-second mounting shaft, 3-pulley, 31-notch, 41-first blocking body, 42-second blocking body, 43-support plate, 5-tensioning gear, 51-first clamping notch, 6-clamping body, 61-first protrusion, 611-second protrusion, 62-second clamping notch, 7-sleeve, 8-first clamping pin shaft and 9-second clamping pin shaft.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 5, there is shown an embodiment of a tower crane luffing dolly of the present invention, specifically:
a tower crane luffing dolly comprises a mounting bracket 1 and at least one pulley 3 arranged in a mounting space of the mounting bracket 1, wherein a first mounting shaft 21 is arranged on the mounting bracket 1, the pulley 3 is mounted on the first mounting shaft 21, and a notch 31 is arranged on the peripheral surface of the pulley 3; along the axial direction of the first mounting shaft 21, mounting gaps are arranged between the mounting bracket 1 and the adjacent pulleys 3 and/or between the pulleys 3 and the pulleys 3, and the blocking structure shown in fig. 2 is correspondingly provided with two pulleys 3 for three mounting gaps; the blocking structure shown in fig. 3 is correspondingly provided with a pulley 3, and two mounting gaps are formed; the mounting bracket 1 is further provided with a blocking structure, the blocking structure comprises a plurality of first blocking bodies 41 which extend from the side of the notch 31 to be arranged in the mounting gap, and at least part of the notch extends into the space enclosed by the two first blocking bodies 41.
Further as a preferred embodiment, the blocking structure further includes a second blocking body 42 with both ends connected with the mounting bracket 1, and the first blocking body 41 is mounted on the second blocking body 42; the second stop body 42 extends along the axis direction of the first installation shaft 21, the second stop body 42 is arranged at the opening side of the notch 31, the second stop body 42 can prevent the steel wire rope from being separated from the opening side of the notch 31, and the safety of the steel wire rope in the using process is further ensured. The distance of the second blocking body 42 from the pulley 3 can be adjusted by those skilled in the art according to the actual size of the steel wire rope.
Further as a preferred embodiment, the first blocking body 41 is configured as an annular body, the second blocking body 42 is configured as a shaft body, the first blocking body 41 is sleeved on the second blocking body 42, and the first blocking body 41 is rotatably connected with the second blocking body 42. The first blocking body 41 is annular and the second blocking body 42 is rotatably connected, so that the first blocking body 41 can rotate to reduce friction resistance under the condition that the steel wire rope is in contact with the first blocking body 41, and meanwhile, the steel wire rope can be prevented from being separated from the side surface in the rotating process.
Further as a preferred embodiment, both ends of the second stopper 42 are provided with supporting plates 43, one end of each supporting plate 43 is connected with the second stopper 42, the other end of each supporting plate 43 is fixedly connected with the mounting bracket 1, and the thickness of each supporting plate 43 is smaller than the diameter of the second stopper 42. The thickness of the support plate 43 is shown as T1 in fig. 2 and 3. The thickness of backup pad 43 is less than the diameter that the second blockked the body 42, then when blockking that the structure receives the great effort that unexpected condition appears in the wire rope operation and bring, the backup pad 43 takes place buckling deformation earlier than the second and blocks the body 42 to make the second block the body 42 and more be close to pulley 3, better prevent that wire rope from deviating from notch 31, improved and blockked the structure and dealt with the unusual ability of wire rope motion.
Further as a preferred embodiment, the tower crane luffing dolly further comprises a tensioning mechanism, the tensioning mechanism comprises a second mounting shaft 22 arranged on the mounting bracket 1 and a tensioning gear 5 arranged on the second mounting shaft 22, and the tensioning gear 5 is provided with a fixing part for fixing the traction rope; the peripheral surface of the tensioning gear 5 is provided with tensioning teeth which are distributed circumferentially, and the tensioning teeth are provided with first clamping notches 51; both ends of the second mounting shaft 22 have a first mounting position and a second mounting position connected with the mounting bracket 1, and the length of the second mounting shaft 22 from the first mounting position to the second mounting position is greater than the thickness of the tension gear 5; if there is only one tensioning gear 5, the thickness refers to the thickness of a single tensioning gear 5; if there are a plurality of gears, as shown in T2 of fig. 4, the thickness refers to the superimposed thickness of the plurality of tension gears 5 including the gap therebetween; the length of the second mounting shaft 22 from the first mounting position to the second mounting position is shown as L in fig. 4. L is greater than T2, the second mounting axle 22 provides a location for engagement with the clutch body 6 or the like, bringing the clutch body 6 or the like closer to the tension gear 5. The tensioning mechanism further comprises a clamping body 6, the clamping body 6 is provided with a second clamping notch 62 for abutting against the second mounting shaft 22, the abutting comprises indirect abutting, namely the clamping body 6 can rotate around the second mounting shaft 22; the clamping body 6 is further provided with a first protrusion 61 for abutting against the first clamping notch 51, and the abutting includes direct abutting and indirect abutting. When the steel wire rope tensioning device is used, the second clamping gap 62 of the clamping body 6 is abutted against the second mounting shaft 22, the first protrusion 61 is abutted against the first clamping gap 51, and at the moment, the clamping body 6 is pulled to drive the tensioning gear 5 to rotate, so that the steel wire rope is further tensioned or loosened.
The tensioning mechanism is arranged and arranged on the tower crane luffing trolley, so that the tightness degree of the traction steel wire rope can be conveniently and quickly adjusted in the processes of installation, use, maintenance, disassembly and the like.
Further as a preferred embodiment, the tensioning mechanism further comprises a sleeve 7 sleeved on the second mounting shaft 22; one end of the sleeve 7 is fixedly connected with the tensioning gear 5, and the other end of the sleeve 7 is abutted against the mounting bracket 1; the sleeve 7 is provided with a clamping section for abutting against the second clamping notch 62. The sleeve pipe 7 is sleeved on the second mounting shaft 22, namely, the inner pipe wall of the sleeve pipe 7 is abutted to the second mounting shaft 22, and the sleeve pipe 7 is provided with a clamping section which is abutted to the second clamping gap 62, so that the second mounting shaft 22 is abutted to the second clamping gap 62, namely, indirect abutment is realized. When the collar 7 is provided, the abutment between the second mounting shaft 22 and the second locking notch 62 may be an indirect abutment, i.e., the second locking notch 62 abuts against the collar 7, and the collar 7 abuts against the second mounting shaft 22 again. The other end of the sleeve 7 is abutted to the mounting bracket 1, so that the axial play of the tensioning gear 5 can be prevented, the axial swing of the steel wire rope is prevented, and the safety of using the steel wire rope in the tower crane luffing trolley is further improved.
Further, as a preferred embodiment, the mounting bracket 1 is provided with an extension portion 11 extending in a radial direction of the tension gear 5, and an extending gap into which the clamping body 6 extends is provided between the extension portion 11 and the tension gear 5. The chucking body 6 can stretch into along stretching into the clearance, until second installation axle 22 butt second chucking breach 62, extension 11 and tensioning gear 5 have played the effect of direction for stretching into of chucking body 6 promptly, have improved the efficiency that chucking body 6 stretched into.
Further as a preferred embodiment, the end of the first protrusion 61 away from the fastening body 6 is provided with a second protrusion 611, and the second protrusion 611 includes a protrusion portion away from the opening direction of the first fastening notch 51. As shown in fig. 4 and 5, the second protrusion 611 is a ring plate including a protrusion portion disposed away from the opening direction of the first catching recess 51. The second protrusion 611 can be used to abut against the other surface of the tension gear 5, so as to prevent the first protrusion 61 from accidentally escaping from the first clamping notch 51 or accidentally bending or breaking, and improve the usability of the first protrusion 61.
Further as a preferred embodiment, the tensioning mechanism further comprises a first clamping pin 8 for abutting against the first clamping notch 51, a waist-shaped hole 12 connected with the first clamping pin 8 is arranged on the mounting bracket 1, the waist-shaped hole 12 may also be arranged on the extension part 11, and at this time, the extension part 11 also belongs to a part of the mounting bracket 1; the first chucking pin shaft 8 has a moving path that moves along the kidney-shaped hole 12. When the tensioning gear 5 is pulled by using the clamping body 6, the first clamping pin 8 remains attached to the tensioning tooth, while the first clamping pin 8 moves along the kidney-shaped hole 12 until the first clamping pin 8 falls down and is clamped into the first clamping gap 51.
Further as preferred embodiment, straining device still includes the second chucking round pin axle 9 that is used for with first chucking breach 51 butt, and the both ends and the installing support 1 fixed connection of second chucking round pin axle 9 are equipped with the accommodation space that is used for holding the tensioning tooth between second chucking round pin axle 9 and the first chucking round pin axle 8. The second clamping pin shaft 9 can be arranged in a detachable connection mode according to actual requirements. The second clamping pin shaft 9 can provide extra locking, the first clamping pin shaft 8 is prevented from accidentally jumping upwards to enable the tensioning gear 5 to rotate, accidental movement of the steel wire rope is avoided, and safety of the steel wire rope in the using process is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A tower crane luffing dolly is characterized by comprising a mounting bracket and at least one pulley arranged in a mounting space of the mounting bracket, wherein the mounting bracket is provided with a first mounting shaft, the pulley is mounted on the first mounting shaft, and the peripheral surface of the pulley is provided with a notch; along the axial direction of the first mounting shaft, mounting gaps are arranged between the mounting bracket and the adjacent pulleys and/or between the pulleys; still be equipped with on the installing support and block the structure, it includes a plurality of successions to block the structure the side of notch extends in order to set up first stopper in the installation clearance, the notch at least part stretches into the setting two in the space that first stopper encloses.
2. The tower crane luffing trolley according to claim 1, wherein the blocking structure further comprises a second blocking body connected with the mounting bracket at both ends, and the first blocking body is mounted on the second blocking body; the second stops the body and extends the setting along the axis direction of first installation axle, the second stops the body setting and is in the opening side of notch.
3. The tower crane luffing trolley according to claim 2, wherein the first blocking body is annular, the second blocking body is a shaft body, the first blocking body is sleeved on the second blocking body, and the first blocking body is rotatably connected with the second blocking body.
4. The tower crane luffing trolley according to claim 2 or 3, wherein support plates are disposed at both ends of the second barrier, one end of each support plate is connected with the second barrier, the other end of each support plate is fixedly connected with the mounting bracket, and the thickness of each support plate is smaller than the diameter of the second barrier.
5. The tower crane luffing trolley according to claim 1, further comprising a tensioning mechanism, wherein the tensioning mechanism comprises a second mounting shaft arranged on the mounting bracket, and a tensioning gear arranged on the second mounting shaft, and a fixing part for fixing a traction rope is arranged on the tensioning gear; tensioning teeth distributed circumferentially are arranged on the peripheral surface of the tensioning gear, and first clamping notches are formed in the tensioning teeth; straining device still includes the chucking body, the chucking body be equipped with be used for with the second chucking breach of second installation axle butt, still be equipped with on the chucking body be used for with the first arch of first chucking breach butt.
6. The tower crane luffing trolley of claim 5, wherein the tensioning mechanism further comprises a sleeve disposed about the second mounting shaft; one end of the sleeve is fixedly connected with the tensioning gear, and the other end of the sleeve is abutted against the mounting bracket; the sleeve is provided with a clamping section which is used for being abutted against the second clamping notch.
7. The tower crane luffing trolley of claim 6, wherein the mounting bracket is provided with an extension part extending in the radial direction of the tensioning gear, and an extending gap for the clamping body to extend into is provided between the extension part and the tensioning gear.
8. The tower crane luffing trolley according to claim 7, wherein a second protrusion is provided at an end of the first protrusion away from the clamping body, and the second protrusion comprises a protrusion portion provided in a direction away from the opening of the first clamping notch.
9. The tower crane luffing trolley according to claim 5, wherein the tensioning mechanism further comprises a first clamping pin for abutting against the first clamping notch, the mounting bracket is provided with a kidney-shaped hole connected with the first clamping pin, and the first clamping pin has a moving path that moves along the kidney-shaped hole.
10. The tower crane luffing trolley according to claim 9, wherein the tensioning mechanism further comprises a second clamping pin shaft for abutting against the first clamping gap, two ends of the second clamping pin shaft are fixedly connected with the mounting bracket, and an accommodating space for accommodating the tensioning teeth is provided between the second clamping pin shaft and the first clamping pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010830683.9A CN111747329A (en) | 2020-08-18 | 2020-08-18 | Tower crane becomes width of cloth dolly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010830683.9A CN111747329A (en) | 2020-08-18 | 2020-08-18 | Tower crane becomes width of cloth dolly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111747329A true CN111747329A (en) | 2020-10-09 |
Family
ID=72713473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010830683.9A Pending CN111747329A (en) | 2020-08-18 | 2020-08-18 | Tower crane becomes width of cloth dolly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111747329A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0826673A (en) * | 1994-07-21 | 1996-01-30 | Tadano Ltd | Wire retainer installation for mobile crane |
| JP2002284487A (en) * | 2001-03-28 | 2002-10-03 | Sumitomo Heavy Industries Construction Crane Co Ltd | Rope latching attachment for different-diameter sheave |
| CN202671028U (en) * | 2012-06-14 | 2013-01-16 | 徐州重型机械有限公司 | Crane rope tightener and crane applying same |
| CN204185142U (en) * | 2014-10-17 | 2015-03-04 | 徐州建机工程机械有限公司 | Tower crane trolley luffing assembly pulley protection device about rope jumping |
| CN204508638U (en) * | 2015-02-16 | 2015-07-29 | 中国建筑科学研究院建筑机械化研究分院 | A kind of hung type lifting amplitude variation trolley |
| CN205527453U (en) * | 2016-04-12 | 2016-08-31 | 南通庞源机械工程有限公司 | Tower machine becomes width of cloth dolly and prevents rope release device |
| CN206427932U (en) * | 2016-12-19 | 2017-08-22 | 武汉钢铁有限公司 | A kind of adjustable overhead traveling crane fixed pulley group steel cable groove separation preventing device |
| CN212246020U (en) * | 2020-08-18 | 2020-12-29 | 广州五羊建设机械有限公司 | Tower crane becomes width of cloth dolly |
-
2020
- 2020-08-18 CN CN202010830683.9A patent/CN111747329A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0826673A (en) * | 1994-07-21 | 1996-01-30 | Tadano Ltd | Wire retainer installation for mobile crane |
| JP2002284487A (en) * | 2001-03-28 | 2002-10-03 | Sumitomo Heavy Industries Construction Crane Co Ltd | Rope latching attachment for different-diameter sheave |
| CN202671028U (en) * | 2012-06-14 | 2013-01-16 | 徐州重型机械有限公司 | Crane rope tightener and crane applying same |
| CN204185142U (en) * | 2014-10-17 | 2015-03-04 | 徐州建机工程机械有限公司 | Tower crane trolley luffing assembly pulley protection device about rope jumping |
| CN204508638U (en) * | 2015-02-16 | 2015-07-29 | 中国建筑科学研究院建筑机械化研究分院 | A kind of hung type lifting amplitude variation trolley |
| CN205527453U (en) * | 2016-04-12 | 2016-08-31 | 南通庞源机械工程有限公司 | Tower machine becomes width of cloth dolly and prevents rope release device |
| CN206427932U (en) * | 2016-12-19 | 2017-08-22 | 武汉钢铁有限公司 | A kind of adjustable overhead traveling crane fixed pulley group steel cable groove separation preventing device |
| CN212246020U (en) * | 2020-08-18 | 2020-12-29 | 广州五羊建设机械有限公司 | Tower crane becomes width of cloth dolly |
Non-Patent Citations (1)
| Title |
|---|
| 曾德江 等: "《机械基础 少学时 第2版》", 31 January 2019, 机械工业出版社, pages: 207 - 209 * |
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