CN110817717A - Integrated safe hoisting equipment based on building construction is used - Google Patents
Integrated safe hoisting equipment based on building construction is used Download PDFInfo
- Publication number
- CN110817717A CN110817717A CN201911142774.7A CN201911142774A CN110817717A CN 110817717 A CN110817717 A CN 110817717A CN 201911142774 A CN201911142774 A CN 201911142774A CN 110817717 A CN110817717 A CN 110817717A
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- support frame
- frame body
- rotary table
- base
- traction
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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
- 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
- B66C23/84—Slewing gear
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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
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- 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
-
- 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
- B66C23/64—Jibs
- B66C23/66—Outer or upper end constructions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides an integrated safe hoisting device based on building construction, which relates to the technical field of building construction and comprises a support frame body, a winch and a hoist scale; a plurality of expansion bolts are arranged on the periphery of the base in a surrounding manner, and the bottom of the base is arranged on a top building body through the expansion bolts; the interior of the rotary table is hollow, and the rotary table is sleeved on the outer side of the top of the base; the two limiting bolts are respectively positioned at the left end and the right end of the rear side of the rotary table; the sealing cover is positioned on the end surface of the top of the rotary table; the traction plate is obliquely arranged at the rear end of the end surface of the top of the rotary table; the folding support frame can be used for folding a longer support frame body in the transportation and carrying processes of hoisting equipment, shortening the length of the support frame body and reducing the transportation difficulty of the equipment, and can be used in combination with the connecting bolts, so that when the upper part and the lower part of the support frame body are butted for use, the butted parts of the two parts of the support frame body are fixed through the connecting bolts, and the firmness of the butted parts of the support frame body in use is ensured.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to an integrated safe hoisting device for building construction.
Background
With the acceleration of social pace, various economic projects are rapidly developed, the construction industry is also developed at high speed, the development of matched equipment is promoted, large-scale equipment such as a crane is generally required during construction, in most cases, a smaller construction site cannot meet the space and conditions of the large-scale equipment, and small pieces are wasted during carrying, so that the conventional problem is greatly solved by the small-sized building construction hoisting equipment; the hoisting equipment for building construction can refer to patent No. CN207030792U, and mainly comprises a vehicle body, fixed support arms, a rotating operation table, a rotating motor, a hydraulic lifting device, a support frame, an operation room, a suspension arm and a hoisting device, wherein the fixed support arms are connected and arranged on two sides of the vehicle body, the rotating motor is arranged above the interior of the vehicle body, the rotating operation table is connected and arranged above the rotating motor through a rotating shaft, the hydraulic lifting device is arranged inside the rotating operation table, and a hydraulic lifting rod is connected and arranged above the hydraulic lifting device; the hoisting equipment for building construction can refer to patent No. CN209442543U, and mainly comprises a motor, a belt wheel, a belt, a winding wheel support plate and a winding wheel, wherein the belt wheel is installed in front of the motor, the belt is installed outside the belt wheel, the winding wheel support plate is arranged at the other end of the belt, the winding wheel is installed behind the winding wheel support plate, a fixed plate is arranged below the winding wheel support plate, a tower tip is arranged at the other side of the winding wheel, a roller is arranged below the tower tip and close to the winding wheel, support plates are arranged on the front side and the rear side of the roller, a roller shaft is arranged at the central position of the roller, a turntable is arranged below the tower tip, a lifting frame is arranged below the turntable, and a tower body is arranged below the lifting; when hoist and mount use, current similar for miniaturized building construction hoisting equipment is relatively poor to the building material weight measurement effect of hoist and mount, and the phenomenon of overloading appears easily in the building material of hoist and mount, can influence the security of building material hoist and mount in the past this long time to hoisting equipment is too heavy when the transportation transport, can't effectually fold the davit, and the davit of longer state causes the difficulty to later stage transportation operation easily.
Disclosure of Invention
In order to solve the technical problems, the invention provides an integrated safe hoisting device for building construction, which aims to solve the problems that the existing similar hoisting device for small building construction has poor weight measurement effect on hoisted building materials, the hoisted building materials are easy to overload, the hoisting safety of the building materials is affected in the past, the hoisting device is too heavy during transportation and carrying, the hoisting arm cannot be effectively folded, and the long hoisting arm is easy to cause difficulty in later transportation operation.
The invention is based on the purpose and the effect of the integrated safe hoisting equipment for building construction, and is achieved by the following specific technical means:
an integrated safe hoisting device for building construction comprises a base, a rotary table, a limiting bolt, a sealing cover, a traction plate, a support frame body, a pulley, a winch and a hoist scale; a plurality of expansion bolts are arranged on the periphery of the base in a surrounding manner, and the bottom of the base is arranged on a top building body through the expansion bolts; the interior of the rotary table is hollow, and the rotary table is sleeved on the outer side of the top of the base; the two limiting bolts are respectively positioned at the left end and the right end of the rear side of the rotary table; the sealing cover is positioned on the end surface of the top of the rotary table; the traction plate is obliquely arranged at the rear end of the end surface of the top of the rotary table; the left side and the right side of the top of the support frame body are respectively provided with a traction hole, and the top of the support frame body is connected with the top of the traction plate through a traction rope; the pulley is provided with two positions, and the two positions of the pulley are rotatably connected to the inner part of the front end of the support frame body; the winch is arranged on the top end face of the rotary table, connected with an external control circuit and connected with the hoisting steel wire rope; the hanging scale is suspended at the bottom of the front end of the support frame body through a hoisting steel wire rope.
Furthermore, the support frame body is inclined, the rear end of the support frame body is respectively connected with the left end and the right end of the rotary table, the support frame body is divided into an upper part and a lower part, and the upper part and the lower part of the support frame body are mutually hinged.
Furthermore, ten connecting bolts are arranged at the butt joint position of the two parts of the support frame body in a surrounding manner, and the upper part and the lower part of the support frame body are fixedly connected together through the connecting bolts.
Furthermore, the traction rope has two positions, the front end of the traction rope is respectively connected in traction holes formed in the left side and the right side of the top of the support frame body, and the rear end of the traction rope is respectively connected in the left end and the right end of the top of the traction plate.
Furthermore, twelve limit grooves are circumferentially formed in the end face of the top of the base, the rotary table is rotatably connected to the outer side of the top of the base, the left end and the right end of the outer side of the rotary table are respectively in threaded connection with one limit bolt, and the bottoms of the limit bolts rotatably extend into the limit grooves formed in the top of the base.
Furthermore, an oil filler point is arranged at the top of the rotary table, the oil filler point is connected with the end face of the top of the base, and the sealing cover is buckled on the outer side of the oil filler point at the top of the rotary table.
Furthermore, the winch is connected with the top of the hanging balance through a hoisting steel wire rope, a lifting hook is arranged at the bottom of the hanging balance, and the top of the hoisting steel wire rope is rotatably connected with a pulley installed at the top of the support frame body.
Compared with the prior art, the invention has the following beneficial effects:
1. the arrangement of the support frame body is beneficial to folding the longer support frame body in the transportation and carrying process of the hoisting equipment, so that the upper part of the support frame body is rotated and folded to the top of the rotary table, the length of the support frame body is shortened, and the transportation difficulty of the equipment is reduced; and the use of cooperation connecting bolt can be when supporting the butt joint of support frame body upper and lower two parts and use, connects fixedly through connecting bolt to supporting the butt joint position of support frame body two parts, the fastness when guaranteeing to support the butt joint position of support frame body two parts and use.
2. The arrangement of the traction rope and the traction plate is beneficial to exerting pulling force on the front end of the top of the support frame body through the traction rope connected with the traction plate when the support frame body hoists building materials, so that the gravity borne by the front end of the support frame body is transmitted to the traction plate through the traction rope, the gravity borne by the front end of the support frame body is shared, and the hoisting safety of the support frame body is guaranteed; and the use of cooperation hanging balance can be at the in-process of hoist engine drive building material lifting, measures building material weight through hanging balance, avoids building material weight to exceed equipment hoist and mount limit, causes construction potential safety hazard.
3. The arrangement of the rotary table and the limiting bolts is favorable for rotating and adjusting the rotary table at the top of the base, the orientation angle of the support frame body is changed, the rotary table is better suitable for hoisting building materials in different directions, and after the rotary table is rotated and adjusted, the limiting bolts arranged on the outer side of the rotary table extend into the limiting grooves at the top of the base to limit and fix the rotary table, so that the stability of the rotary table during hoisting and using the building materials is guaranteed; and the cooperation revolving stage top oil filler point set up, make things convenient for personnel when the revolving stage rotates the regulation, pass through the oil filler point with lubricating oil and pour into revolving stage and base junction department into, guarantee revolving stage and base contact site pivoted smoothness nature.
Drawings
FIG. 1 is a rear axial view of the present invention.
Fig. 2 is a schematic front axial view of the present invention.
Fig. 3 is a right-view structural diagram of the present invention.
Fig. 4 is a schematic view of a folding structure of the support frame of the present invention.
Fig. 5 is a schematic view of a combined and butted structure of the support frame body of the invention.
Fig. 6 is a schematic sectional view of a turntable according to the present invention.
Figure 7 is a schematic axial view of the base of the present invention.
Fig. 8 is a schematic view of the connection structure of the winch, the hoisting steel wire rope and the hoist scale.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a base; 101. a limiting groove; 2. an expansion bolt; 3. a turntable; 301. an oil filler hole; 4. a limit bolt; 5. a sealing cover; 6. a traction plate; 7. a hauling rope; 8. a support frame body; 801. a drawing hole; 9. a connecting bolt; 10. a pulley; 11. a winch; 12. hoisting a steel wire rope; 13. and (4) hanging a scale.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 8:
the invention provides an integrated safe hoisting device based on building construction, which comprises a base 1, a rotary table 3, a limiting bolt 4, a sealing cover 5, a traction plate 6, a support frame body 8, a pulley 10, a winch 11 and a hoist scale 13, wherein the base is fixedly connected with the rotary table; a plurality of expansion bolts 2 are arranged on the periphery of the base 1 in a surrounding manner, and the bottom of the base 1 is arranged on a top-level building body through the expansion bolts 2; the inside of the rotary table 3 is hollow, and the rotary table 3 is sleeved outside the top of the base 1; the top of the rotary table 3 is provided with an oil filling hole 301, the oil filling hole 301 is connected with the top end face of the base 1, and the sealing cover 5 is buckled outside the oil filling hole 301 on the top of the rotary table 3, so that when the rotary table 3 rotates and is adjusted, a person can conveniently inject lubricating oil into the connecting position of the rotary table 3 and the base 1 through the oil filling hole 301, the rotating smoothness of the contact position of the rotary table 3 and the base 1 is ensured, the oil filling hole 301 is sealed through the sealing cover 5, and the phenomenon that external sand enters the oil filling hole 301 to influence the rotating and adjusting smoothness of the rotary table 3 is avoided; the number of the limiting bolts 4 is two, and the two limiting bolts 4 are respectively positioned at the left end and the right end of the rear side of the rotary table 3; the sealing cover 5 is positioned on the top end surface of the rotary table 3; the traction plate 6 is obliquely arranged at the rear end of the top end surface of the rotary table 3; the left side and the right side of the top of the support frame body 8 are respectively provided with a traction hole 801, and the top of the support frame body 8 is connected with the top of the traction plate 6 through a traction rope 7; the pulleys 10 are arranged at two positions, and the two pulleys 10 are rotatably connected to the inner part of the front end of the support frame body 8; the winch 11 is installed on the top end face of the rotary table 3, the winch 11 is connected with an external control circuit, and the winch 11 is connected with the hoisting steel wire rope 12; the hanging scale 13 is suspended at the bottom of the front end of the support frame body 8 through a hoisting steel wire rope 12.
Wherein, the supporting frame body 8 is inclined, the rear end of the supporting frame body 8 is respectively connected with the left end and the right end of the rotary table 3, the supporting frame body 8 is divided into an upper part and a lower part, and the upper part and the lower part of the supporting frame body 8 are mutually hinged; concrete effect can be in lifting device transportation handling, and folding longer support body 8 makes support body 8 top rotate to fold to 3 tops of revolving stage, and 8 lengths of support body are shortened, reduce the equipment transportation degree of difficulty.
Ten connecting bolts 9 are arranged at the butt joint parts of the two parts of the support frame body 8 in a surrounding manner, and the upper part and the lower part of the support frame body 8 are fixedly connected together through the connecting bolts 9; the concrete effect can be when two parts butt joint uses about supporting the support body 8, connect fixedly through connecting bolt 9 to supporting support body 8 two parts butt joint position, the fastness when the support body 8 two parts butt joint position uses is ensured.
Wherein, the traction rope 7 has two parts, the front end of the traction rope 7 is respectively connected in the traction holes 801 arranged at the left and right sides of the top of the support frame body 8, and the rear end of the traction rope 7 is respectively connected in the left and right ends of the top of the traction plate 6; concrete effect can be when supporting support body 8 and to building material hoist and mount operation, through haulage rope 7 that 6 traction plates are connected, applys the pulling force to supporting 8 top front ends of support body, makes the gravity that supports 8 front ends of support body and bear transmit to 6 departments of traction plate through haulage rope 7, shares supporting 8 front end gravity of support body, and the security of the 8 hoist and mount operations of support body is supported in the guarantee.
Twelve limiting grooves 101 are circumferentially formed in the end face of the top of the base 1, the rotary table 3 is rotatably connected to the outer side of the top of the base 1, the left end and the right end of the outer side of the rotary table 3 are respectively in threaded connection with one limiting bolt 4, and the bottoms of the limiting bolts 4 rotatably extend into the limiting grooves 101 formed in the top of the base 1; concrete effect can rotate regulation to 1 top revolving stage 3 of base, changes and supports 8 orientation angles of support body, and it is required that the building material hoist and mount of better being applicable to different position to rotate regulation at revolving stage 3 and finish the back, extend to 1 top spacing groove 101 of base with spacing bolt 4 that 3 outsides of revolving stage were installed, carry out spacing fixed to revolving stage 3, guarantee revolving stage 3 stability when building material hoist and mount uses.
The winch 11 is connected with the top of the hanging scale 13 through a hoisting steel wire rope 12, the bottom of the hanging scale 13 is provided with a lifting hook, and the top of the hoisting steel wire rope 12 is rotationally connected with the pulley 10 arranged on the top of the support frame body 8; concrete effect, the building material that hoist and mount wire rope 12 that accessible hoist engine 11 is connected drives the hoist and mount scale 13 bottom and hangs reciprocates, realizes hoist and mount transportation operation to building material to at the in-process of building material transportation, measure building material weight through hoist and mount scale 13, avoid building material weight to exceed equipment hoist and mount limit, cause construction potential safety hazard.
The specific use mode and function of the embodiment are as follows:
when the building support is used, a constructor firstly fixes the bottom of a base 1 on a top-level building body through an expansion bolt 2 and rotatably unfolds the upper part of a support frame body 8 to enable the upper part and the lower part of the support frame body 8 to be in a butt joint state, so that the constructor can fixedly connect the upper part and the lower part of the support frame body 8 together through a connecting bolt 9 arranged on the outer side of the support frame body 8; next, the constructor injects lubricating oil into the connecting part of the turntable 3 and the base 1 through the oil injection hole 301, so as to ensure the smoothness of the rotation of the connecting part of the turntable 3 and the base 1, and rotatably adjusts the turntable 3 according to the requirement of hoisting building materials in different directions, so as to change the orientation angle of the support frame body 8, after the turntable 3 is rotatably adjusted, the constructor rotatably extends the limiting bolt 4 arranged on the outer side of the turntable 3 into the limiting groove 101 at the top of the base 1, so as to limit and fix the turntable 3, and ensure the stability of the turntable 3 during hoisting and using the building materials; then, a constructor connects the lifting hook arranged at the bottom of the hanging scale 13 with the building material, and then the winch 11 can be started to drive the building material hung at the bottom of the hanging scale 13 to move up and down, so that the building material is hoisted and transported; when the building material is hoisted and transported. The crane scale 13 measures the weight of the building materials, so that the potential safety hazard of construction caused by the fact that the weight of the building materials exceeds the hoisting limit of equipment is avoided; support 8 pull ropes 7 that the top was connected of support frame body, conduct the gravity that partial bore to 6 departments of traction plate, share support 8 front end gravity of support frame body, the security of the 8 hoist and mount operations of support frame body of guarantee.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. The utility model provides an integration safety lifting device based on construction usefulness which characterized in that: the device comprises a base (1), a rotary table (3), a limiting bolt (4), a sealing cover (5), a traction plate (6), a support frame body (8), a pulley (10), a winch (11) and a hanging scale (13); a plurality of expansion bolts (2) are arranged on the periphery of the base (1) in a surrounding manner, and the bottom of the base (1) is arranged on a top building body through the expansion bolts (2); the inner part of the rotary table (3) is hollow, and the rotary table (3) is sleeved on the outer side of the top of the base (1); the number of the limiting bolts (4) is two, and the two limiting bolts (4) are respectively positioned at the left end and the right end of the rear side of the rotary table (3); the sealing cover (5) is positioned on the end surface of the top of the rotary table (3); the traction plate (6) is obliquely arranged at the rear end of the top end surface of the rotary table (3); the left side and the right side of the top of the support frame body (8) are respectively provided with a traction hole (801), and the top of the support frame body (8) is connected with the top of the traction plate (6) through a traction rope (7); the pulley (10) has two positions, and the two pulleys (10) are rotatably connected to the inner part of the front end of the support frame body (8); the winch (11) is installed on the top end face of the rotary table (3), the winch (11) is connected with an external control circuit, and the winch (11) is connected with the hoisting steel wire rope (12); the crane scale (13) is suspended at the bottom of the front end of the support frame body (8) through a hoisting steel wire rope (12).
2. The integrated safety hoisting device for building construction based on claim 1 is characterized in that: the support frame body (8) is inclined, the rear end of the support frame body (8) is connected with the left end and the right end of the rotary table (3) respectively, the support frame body (8) is divided into an upper part and a lower part, and the upper part and the lower part of the support frame body (8) are hinged with each other.
3. The integrated safety hoisting device for building construction based on claim 1 is characterized in that: the butt joint parts of the two parts of the support frame body (8) are provided with ten connecting bolts (9) in a surrounding manner, and the upper part and the lower part of the support frame body (8) are fixedly connected together through the connecting bolts (9).
4. The integrated safety hoisting device for building construction based on claim 1 is characterized in that: the traction rope (7) is provided with two parts, the front end of the traction rope (7) is respectively connected into traction holes (801) formed in the left side and the right side of the top of the support frame body (8), and the rear end of the traction rope (7) is respectively connected into the left end and the right end of the top of the traction plate (6).
5. The integrated safety hoisting device for building construction based on claim 1 is characterized in that: twelve limiting grooves (101) are formed in the end face of the top of the base (1) in a surrounding mode, the rotary table (3) is rotatably connected to the outer side of the top of the base (1), the left end and the right end of the outer side of the rotary table (3) are respectively in threaded connection with one limiting bolt (4), and the bottom of each limiting bolt (4) is rotatably extended into the corresponding limiting groove (101) formed in the top of the base (1).
6. The integrated safety hoisting device for building construction based on claim 1 is characterized in that: an oil filler point (301) is arranged at the top of the rotary table (3), the oil filler point (301) is connected with the top end face of the base (1), and the sealing cover (5) is buckled on the outer side of the oil filler point (301) at the top of the rotary table (3).
7. The integrated safety hoisting device for building construction based on claim 1 is characterized in that: the hoisting machine (11) is connected with the top of the hanging scale (13) through a hoisting steel wire rope (12), a lifting hook is arranged at the bottom of the hanging scale (13), and the top of the hoisting steel wire rope (12) is rotatably connected with a pulley (10) installed at the top of the support frame body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911142774.7A CN110817717A (en) | 2019-11-20 | 2019-11-20 | Integrated safe hoisting equipment based on building construction is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911142774.7A CN110817717A (en) | 2019-11-20 | 2019-11-20 | Integrated safe hoisting equipment based on building construction is used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110817717A true CN110817717A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911142774.7A Pending CN110817717A (en) | 2019-11-20 | 2019-11-20 | Integrated safe hoisting equipment based on building construction is used |
Country Status (1)
| Country | Link |
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| CN (1) | CN110817717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661026A (en) * | 2020-12-23 | 2021-04-16 | 蒋彩霞 | High hoisting apparatus for construction of security |
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| CN101845833A (en) * | 2009-03-27 | 2010-09-29 | 日立建机株式会社 | Two-member connecting device |
| CN201971572U (en) * | 2010-09-27 | 2011-09-14 | 中昇建机(南京)重工有限公司 | Movable arm type tower crane with suspension arm possible of being folded for dismounting |
| CN102381644A (en) * | 2011-11-14 | 2012-03-21 | 中联重科股份有限公司 | Revolving stage centering mechanism and have hoist of revolving stage centering mechanism |
| CN202338536U (en) * | 2011-11-11 | 2012-07-18 | 中联重科股份有限公司 | Locking structure of revolving platform of engineering machinery, crane and engineering machinery |
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2019
- 2019-11-20 CN CN201911142774.7A patent/CN110817717A/en active Pending
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| CN101845833A (en) * | 2009-03-27 | 2010-09-29 | 日立建机株式会社 | Two-member connecting device |
| CN201971572U (en) * | 2010-09-27 | 2011-09-14 | 中昇建机(南京)重工有限公司 | Movable arm type tower crane with suspension arm possible of being folded for dismounting |
| CN202338536U (en) * | 2011-11-11 | 2012-07-18 | 中联重科股份有限公司 | Locking structure of revolving platform of engineering machinery, crane and engineering machinery |
| CN102381644A (en) * | 2011-11-14 | 2012-03-21 | 中联重科股份有限公司 | Revolving stage centering mechanism and have hoist of revolving stage centering mechanism |
| CN209276042U (en) * | 2019-01-11 | 2019-08-20 | 湖南厚德重工机械有限公司 | A kind of turntable structure of crawler telescopic arm hoisting machine |
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| CN112661026A (en) * | 2020-12-23 | 2021-04-16 | 蒋彩霞 | High hoisting apparatus for construction of security |
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Application publication date: 20200221 |