CN113353822B - Windproof protection method for movable arm tower crane - Google Patents
Windproof protection method for movable arm tower crane Download PDFInfo
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- CN113353822B CN113353822B CN202110833953.6A CN202110833953A CN113353822B CN 113353822 B CN113353822 B CN 113353822B CN 202110833953 A CN202110833953 A CN 202110833953A CN 113353822 B CN113353822 B CN 113353822B
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- tower crane
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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
- B66C23/72—Counterweights or supports for balancing lifting couples
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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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
A movable arm tower crane windproof protection method is matched with a movable arm tower crane windproof device, the movable arm tower crane windproof device comprises a foundation, a plurality of standard knots which are vertically arranged and fixedly connected with each other are arranged on the foundation, a supporting control mechanism is arranged between the standard knots directly connected with the foundation and the foundation, every two of the standard knots are provided with eight four groups of perpendicular supporting rods above the supporting control mechanism, each group of supporting rods is provided with a detection shell, a touch detection mechanism is arranged inside each detection shell, a wind speed detector is arranged on the top standard knot, two connecting fixing rods are symmetrically arranged on the top standard knot, a connecting fixing rod counterweight control system is symmetrically arranged on the inside of each standard knot, four chute pipes are symmetrically arranged inside each standard knot, and a moving fixing mechanism is arranged on each chute pipe. The movable arm tower crane achieves the purpose of comprehensively preventing wind and resisting wind without occupying the internal channel space of the standard section of the tower crane under the condition of not changing the original structure and the load of the tower crane.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a movable arm tower crane windproof protection method.
Background
In building construction, the boom tower crane is an important and indispensable important construction tool. But due to the influence of its own structure and working environment, it risks breaking or collapsing in the face of extreme weather, particularly windy weather. In the prior art, the structure of a tower crane is firstly or seriously changed, so that a new weak point is caused; secondly, the space of an original internal passage for a tower crane driver to pass up and down in the standard section is occupied, so that the up-and-down passing of the tower crane driver is influenced, the windproof mechanism is determined to be started only after the tower crane driver returns to the ground, and the risk of breaking or collapsing of the tower crane is increased; thirdly, the load of the tower crane is additionally increased, and the tower crane under normal work is possibly negatively influenced; fourth, or only the reinforcing support of the base, lack of overall adjustment and limited wind resistance. Based on the method, the movable arm tower crane comprehensive wind-proof and wind-resistant method which does not occupy the internal channel space of the standard section of the tower crane under the condition that the original structure and the load of the tower crane are not changed is designed.
Disclosure of Invention
The invention aims to provide a movable arm tower crane windproof protection method aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a protection method is prevent wind to swing arm tower crane, this method cooperates a swing arm tower crane safety device to go on, and this swing arm tower crane safety device includes the ground, be equipped with a plurality of standard festivals of vertical setting and mutual fixed connection on the ground, directly with the ground is connected be equipped with between standard festivals and the ground and support control mechanism, standard festivals are equipped with two liang of vertically eight four group bracing pieces in the top that supports control mechanism, every be equipped with the detection shell on the bracing piece, every the inside touching detection mechanism that is equipped with of detection shell, four mutually parallel be equipped with the rack support post on the bracing piece, every be equipped with the rack on the rack support post, the top be equipped with the wind speed detector on the standard festivals, the top standard festivals symmetry is equipped with two and connects the dead lever, one side be equipped with big cylinder dead lever on the connection dead lever, the opposite side the symmetry is equipped with two little cylinder dead levers on the connection dead lever, every the little cylinder dead lever with the symmetry is equipped with two driven shaft between the big cylinder dead lever, every the middle part of driven shaft is equipped with driven gear, every be equipped with two cylinders on the driven shaft, every driven gear is equipped with the symmetry on the driven shaft, every be equipped with the driven gear and the driving mechanism, be equipped with the driving mechanism on the driving motor shaft, be equipped with the driving mechanism of the slip pipe, the driving mechanism, be equipped with the driving mechanism.
Preferably, a hydraulic rod rack fixing section is fixedly arranged on each upright post of the standard section, a hydraulic bearing is fixedly arranged on each hydraulic rod rack fixing section, every two vertical four groups of eight hydraulic foundation fixing sections are fixedly arranged in the vertical direction of the upright post of the standard section on the outer position of the standard section on the foundation, a hydraulic bearing is arranged on each hydraulic foundation fixing section, a hydraulic fixing rod is arranged on each hydraulic bearing on the hydraulic foundation fixing section, each hydraulic fixing rod can swing around the hydraulic bearing, a hydraulic cylinder is fixedly arranged on each hydraulic fixing rod, a hydraulic extension rod capable of sliding in a reciprocating mode and extending out of the hydraulic cylinder is arranged inside each hydraulic cylinder, and each hydraulic extension rod can swing around the hydraulic bearing on the hydraulic rod rack fixing section.
Preferably, eight bases are fixedly arranged inside each detection shell according to forty-five degrees, each base is provided with a detection chute, a detection slide block capable of sliding in a reciprocating manner is arranged in each detection chute, a detection spring is arranged between each detection slide block and the detection chute, each detection slide block and the corresponding base are internally provided with a conductive detection mechanism, and a detection plate is fixedly arranged on each detection slide block.
Preferably, a conducting layer is arranged at the bottom of each detection sliding block, and detection circuits are symmetrically arranged on two sides of each base, corresponding to each detection sliding groove.
Preferably, each detection plate is an arc-shaped plate with a central angle slightly smaller than forty-five degrees.
Preferably, a clamping groove is formed in the bottom of each counterweight body, and a permanent magnet is arranged inside each clamping groove.
Preferably, every the chute pipe box is equipped with the motion casing, every the motion casing is followed the axial symmetry of chute pipe is equipped with six crawl's cylinder pivots, every be equipped with crawl's cylinder in the crawl's cylinder pivot, every be equipped with half a circle gear shaft on the motion casing, be equipped with half a circle gear in every half a circle gear shaft, be equipped with the fixture block on every half a circle gear, every the fixture block can block in the draw-in groove.
Preferably, the number, the installation angle and the installation position of the hydraulic cylinder and auxiliary matching parts thereof can be reasonably adjusted according to the specific installation environment and the use condition of the movable arm tower crane, so that the hydraulic cylinder and auxiliary matching parts thereof can better adapt to the environment and play a role.
Preferably, the number of winding turns and the winding mode of the cable on the roller can be finely adjusted to adapt to tower cranes with different heights.
Preferably, the axial lengths of the detection shell and the detection plate can be reasonably shortened so as to reduce the wind resistance under extreme working conditions.
Preferably, the elastic force of the detection spring can be adjusted to adapt to different wind speed management and structural strength of different standard knots.
Preferably, the number of the crawling rollers can be increased or decreased to obtain the capability of adapting to different counterweight bodies and increase the structural stability.
Has the advantages that:
the invention provides a movable arm tower crane windproof protection method through improvement, and compared with the prior art, the movable arm tower crane windproof protection method has the following improvements and advantages:
1. through the mutual cooperation of four balancing weights, under the condition that does not change the structure and the counter weight of tower crane, realized not crowding the inside original passageway space of tower crane standard festival of taking up moreover to the adjustment of tower crane focus.
2. Through the mutual cooperation of the balancing weight, the detection plate, the detection slide block, the detection circuit and the conducting layer, the dynamic control of the hydraulic extension rod and the hydraulic cylinder is further realized, the comprehensive wind-resistant and wind-resistant regulation and control purpose of multiple means is achieved, and the wind-resistant and wind-resistant device is better suitable for extreme weather and wind direction.
3. The large cylindrical fixing rod and the small cylindrical fixing rod are used, so that the wind area of the tower crane is reduced as much as possible, and positive help is provided for the wind resistance of the tower crane.
4. The use of the slide way pipe not only realizes the stability control in the falling process of the counterweight body, but also has positive influence on the stability of the integral structure of the tower crane, and reduces the wind resistance on the tower crane as much as possible.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a partial left side view of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 5 is an enlarged view of a portion of FIG. 1 at C;
FIG. 6 is an enlarged view of a portion of FIG. 1 at D;
FIG. 7 is a cross-sectional view taken at E-E of FIG. 2;
FIG. 8 is a cross-sectional view taken at G-G of FIG. 7;
FIG. 9 is an enlarged view of a portion of FIG. 4 at F;
fig. 10 is a partial enlarged view of fig. 9 at H.
In the figure, a weight body 10, a moving shell 11, a standard knot 12, a chute pipe 13, a rack 14, a detection shell 15, a hydraulic rod rack fixing knot 16, a hydraulic extension rod 17, a hydraulic cylinder 18, a hydraulic fixing rod 19, a hydraulic bearing 20, a hydraulic foundation fixing knot 21, a foundation 22, a driving gear 23, a large cylindrical fixing rod 24, a connecting fixing rod 25, a half-ring gear 26, a driven gear 27, a roller 28, a driven rotating shaft 29, a driving rotating shaft 30, a motor 31, a small cylindrical fixing rod 32, a supporting rod 34, a wind speed detector 36, a cable 37, a rack supporting column 38, a permanent magnet 39, a clamping groove 40, a clamping block 41, a half-ring gear rotating shaft 43, a crawling roller 44, a crawling roller rotating shaft 45, a limiting block 46, a base 47, a detection plate 48, a detection sliding block 49, a detection spring 51, a detection chute 52, a detection circuit 53 and a conductive layer 54.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
In the description of the present invention, it should be noted that the terms "inside", "below", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, 2, 3, 5 and 6, a movable arm tower crane windproof protection method is performed by matching with a movable arm tower crane windproof device, the movable arm tower crane windproof device comprises a foundation 22, a plurality of standard knots 12 which are vertically arranged and fixedly connected with each other are arranged on the foundation 22, a support control mechanism is arranged between the standard knot 12 directly connected with the foundation 22 and the foundation 22, eight four groups of support rods 34 which are perpendicular to each other are arranged above the support control mechanism on the standard knot 12, a detection shell 15 is arranged on each group of support rods 34, a touch detection mechanism is arranged inside each detection shell 15, rack support columns 38 are arranged on four parallel support rods 34, a rack 14 is arranged on each rack support column 38, a wind speed detector 36 is arranged on the top standard knot 12, two connecting fixing rods 25 are symmetrically arranged on the top standard knot 12, a large cylindrical fixing rod 24 is arranged on one side connecting fixing rod 25, two small cylindrical fixing rods 32 are symmetrically arranged on the other side connecting fixing rod 25, two driven rotating shafts 29 are symmetrically arranged between each small cylindrical fixing rod 32 and the large cylindrical fixing rod 24, a driven gear 27 is arranged in the middle of each driven rotating shaft 29, two rollers 28 are symmetrically arranged on each driven rotating shaft 29, a cable rope 37 wound on each roller 28 is arranged on each roller 28, a counterweight body 10 is fixedly arranged at the tail end of each cable rope 37, a fixing mechanism is arranged on the lower portion of the counterweight body 10, a motor 31 is arranged on the connecting fixing rod 25, a driving rotating shaft 30 is arranged at the output end of the motor 31, a driving gear 23 is fixedly arranged on the driving rotating shaft 30, the driving gear 23 is meshed with the driven gear 27 for transmission, four slide channels 13 are symmetrically arranged inside the standard joint 12, and a movable fixing mechanism is arranged on each slide channel 13.
As shown in fig. 1 and 4, each upright post of the standard knot 12 is fixedly provided with a hydraulic rod rack fixing knot 16, each hydraulic rod rack fixing knot 16 is fixedly provided with a hydraulic bearing 20, a foundation 22 is fixedly provided with eight four groups of hydraulic foundation fixing knots 21 which are perpendicular to each other in a pairwise manner in the vertical direction of the upright post of each standard knot 12 at the position outside the standard knot 12, each hydraulic foundation fixing knot 21 is provided with a hydraulic bearing 20, each hydraulic bearing 20 positioned on each hydraulic foundation fixing knot 21 is provided with a hydraulic fixing rod 19, each hydraulic fixing rod 19 can swing around the hydraulic bearing 20, each hydraulic fixing rod 19 is fixedly provided with a hydraulic cylinder 18, each hydraulic cylinder 18 is internally provided with a hydraulic extending rod 17 which extends out of the hydraulic cylinder 18 and can slide back and forth, and each hydraulic extending rod 17 can swing around the hydraulic bearing 20 positioned on the hydraulic rod rack fixing knot 16.
As shown in fig. 9, eight bases 47 are fixedly arranged inside each detection housing 15 according to forty-five degrees, each base 47 is provided with a detection chute 52, each detection chute 52 is internally provided with a detection slide block 49 capable of sliding back and forth, a detection spring 51 is arranged between the detection slide block 49 and the detection chute 52, each detection slide block 49 and the corresponding base 4 are internally provided with a conductive detection mechanism, and each detection slide block 49 is fixedly provided with a detection plate 48.
As shown in fig. 10, a conductive layer 54 is provided at the bottom of each detection slider 49, and each base 47 is provided with detection circuits 53 symmetrically at both sides of each detection chute 52 corresponding thereto.
As shown in fig. 9, each pickup plate 48 is an arcuate plate having a central angle slightly less than forty-five degrees.
As shown in fig. 7, a slot 40 is formed at the bottom of each counterweight 10, and a permanent magnet 39 is disposed inside the slot 40.
As shown in fig. 5, 7 and 8, each chute pipe 13 is sleeved with a moving shell 11, each moving shell 11 is provided with six crawling roller rotating shafts 45 symmetrically along the axial direction of the chute pipe 13, each crawling roller rotating shaft 45 is provided with a crawling roller 44, each moving shell 11 is provided with a semi-circle gear rotating shaft 43, each semi-circle gear rotating shaft 43 is provided with a semi-circle gear 26, each semi-circle gear 26 is provided with a fixture block 41, and each fixture block 41 can be clamped in the clamping groove 40.
Furthermore, the quantity, the installation angle and the installation position of the hydraulic cylinder 18 and auxiliary matching parts thereof can be reasonably adjusted according to the specific installation environment and the use working condition of the movable arm tower crane, so that the hydraulic cylinder can better adapt to the environment and play a role.
Further, the number of winding turns and the winding mode of the cable 37 on the roller 28 can be finely adjusted to adapt to tower cranes with different heights.
Further, the axial lengths of the detection shell 15 and the detection plate 48 can be reasonably shortened to reduce the wind resistance under extreme working conditions.
Further, the elastic force of the detection spring 51 can be adjusted to adapt to different wind speed management and structural strength of different standard knots.
Further, the number of the crawling rollers 45 may be increased or decreased to obtain the ability to adapt to different weight bodies, thereby increasing the structural stability.
Initial position: the weight body 10 is not put down by the roller 28, the clamping block 41 is clamped into the clamping groove 40 at the bottom of the weight body 10 and is sucked by the permanent magnet 39, the half-circle gear 26, the moving shell 11 and the crawling roller 44 are positioned in the standard section at the uppermost part of the tower crane, the crawling roller 44 is tightly embraced on the chute pipe 13, the detection plate 48 and the detection slide block 49 are popped up by the detection spring 51, the detection plate 48 surrounds a circle with the diameter slightly larger than that of the weight body 10, and the hydraulic cylinder 18 and the hydraulic extension rod 17 are in a jacking state.
The movable arm tower crane windproof protection method comprises the following specific steps:
the first step is as follows: wind measurement starts and lowers the center of gravity. When the wind speed detector 36 located inside the uppermost standard knot 12 detects a wind speed exceeding a set value, an electrical signal is sent to trigger the motor 31. The motor 31 is powered on to drive the driving shaft 30 to rotate. Since the driving shaft 30 and the driving gear 23 are fixedly connected in the circumferential direction, the driving shaft 30 drives the driving gear 23 to rotate. Since the driving gear 23 is in meshing relationship with the driven gear 27, the driving gear 23 in turn rotates the driven gear 27. Because the driven gear 27 and the driven rotating shaft 29 are fixedly connected in the circumferential direction, the driven gear 27 further drives the driven rotating shaft 29 to rotate. Since the roller 28 and the driven rotating shaft 29 are fixedly connected in the circumferential direction, the driven rotating shaft 29 drives the roller 28 to rotate. The rotation of the drum 28 lowers the weight body 10. Since the weight body 10 is integrally engaged with the engaging piece 41 of the half-ring gear 26, the weight body 10 simultaneously drives the half-ring gear 26, the moving casing 11, the crawling roller 44 and the accessories thereof to move downward along the chute 13.
The second step is that: the gravity center is lowered and the wind direction detection device is started. As the weight body 10 and the half-turn gear 26, the moving housing 11 and the creep roller 44 and their accessories are continuously dropped, the half-turn gear 26, the moving housing 11 and the creep roller 44 and their accessories reach the upper portion of the rack 14. As the half-turn gear 26, the moving casing 11, the crawling roller 44 and the accessories thereof further fall, the half-turn gear 26 is gradually meshed with the rack 14, the half-turn gear 26 starts to rotate counterclockwise around the half-turn gear rotating shaft 43, and as the half-turn gear rotating shaft 43 continues to rotate, the fixture block 41 overcomes the magnetic attraction force of the permanent magnet 39 to the fixture block and finally is separated from the clamping groove 40. The weight 10 smoothly enters the circle surrounded by the eight detecting plates 48 in the detecting shell 15, and marks the start of the wind direction detecting device.
The third step: the wind direction is detected and the support force is adjusted. Since the upper portion of the weight body 10 is connected by the cable 37, the weight body 10 is deflected differently from the standard knot 12 when a wind blows. The weight body 10 collides with the detection plate 48, and since the detection plate 48 and the detection slider 49 are fixedly connected, the detection slider 49 is displaced against the elastic force of the detection spring 51. As the displacement of the slider 49 is detected, the detection circuit 53 is turned on through the conductive layer 54, and an electric signal is emitted. The electrical signal controls the extension of the hydraulic extension bar 17 of the hydraulic cylinder 18, which in turn affects the force exerted on the standard knot 12. Thereby realizing the dynamic adjustment of the stress state of the standard knot 12.
And fourthly, restoring the initial state. As the wind speed decreases, the wind speed detector 36 sends out a corresponding electrical signal, and the motor 31 receiving the electrical signal starts to rotate in reverse to drive the driving shaft 30 to rotate. Since the driving shaft 30 and the driving gear 23 are fixedly connected in the circumferential direction, the driving shaft 30 drives the driving gear 23 to rotate. Since the driving gear 23 is in meshing relationship with the driven gear 27, the driving gear 23 in turn rotates the driven gear 27. Because the driven gear 27 and the driven rotating shaft 29 are fixedly connected in the circumferential direction, the driven gear 27 further drives the driven rotating shaft 29 to rotate. Since the roller 28 and the driven rotating shaft 29 are fixedly connected in the circumferential direction, the driven rotating shaft 29 drives the roller 28 to rotate. The weight body 10 is pulled out of the circle surrounded by the eight detection plates 48 inside the detection casing 15 by the cable 37 and pulled back to the top. At the same time, the fixture block 41 is only required to be clamped into the clamping groove 40 at the lower part of the counterweight body 10, and the half-circle gear 26, the moving shell 11, the crawling roller 44 and the accessory parts thereof are also brought back to the topmost standard knot 12.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides a movable arm tower crane safety device against wind, includes ground (22), be equipped with a plurality of standard festivals (12) of vertical setting and mutual fixed connection on ground (22), direct with ground (22) are connected be equipped with between standard festivals (12) and ground (22) and support control mechanism, standard festivals (12) are equipped with two liang of vertically eight four group bracing pieces (34) in the top that supports control mechanism, every group be equipped with detection shell (15), every be equipped with touching detection mechanism in detection shell (15), four be parallel to each other be equipped with rack support post (38) on bracing piece (34), every be equipped with rack (14) on rack support post (38), the top be equipped with wind speed detector (36) on standard festivals (12), the top standard festivals (12) symmetry is equipped with two and connects dead lever (25), one side be equipped with big cylinder dead lever (24) on connecting dead lever (25), the opposite side connect dead lever (25) go up symmetry and be equipped with two little cylinder dead lever (32), every be equipped with between little cylinder dead lever (32) and big cylinder dead lever (24) symmetry, every be equipped with two driven gear (29), driven pulley (29) middle part symmetry is equipped with driven pulley (27) on every driven pulley (29), each roller (28) is provided with a cable rope (37) wound on the roller, the tail end of each cable rope (37) is fixedly provided with a counterweight body (10), the lower part of each counterweight body (10) is provided with a fixing mechanism, the connecting fixing rod (25) is provided with a motor (31), the output end of each motor (31) is provided with a driving rotating shaft (30), the driving rotating shaft (30) is fixedly provided with a driving gear (23), the driving gear (23) is in meshing transmission with a driven gear (27), four chute pipes (13) are symmetrically arranged inside the standard section (12), and each chute pipe (13) is provided with a movable fixing mechanism;
eight bases (47) are fixedly arranged in each detection shell (15) according to forty-five degrees, each base (47) is provided with a detection sliding chute (52), each detection sliding chute (52) is internally provided with a detection sliding block (49) capable of sliding in a reciprocating manner, a detection spring (51) is arranged between each detection sliding block (49) and the detection sliding chute (52), each detection sliding block (49) and the corresponding base (47) are internally provided with a conductive detection mechanism, and each detection sliding block (49) is fixedly provided with a detection plate (48);
the bottom of each detection sliding block (49) is provided with a conducting layer (54), and each base (47) is symmetrically provided with detection circuits (53) at two sides of each detection sliding groove (52) corresponding to the base.
2. The movable arm tower crane windproof device according to claim 1, characterized in that a hydraulic rod frame fixing section (16) is fixedly arranged on each upright post of the standard section (12), a hydraulic bearing (20) is fixedly arranged on each hydraulic rod frame fixing section (16), eight four groups of hydraulic foundation fixing sections (21) which are perpendicular to each other are fixedly arranged on the foundation (22) in the vertical direction of the upright post of each standard section (12) at the position outside the standard section (12), a hydraulic bearing (20) is arranged on each hydraulic foundation fixing section (21), a hydraulic fixing rod (19) is arranged on each hydraulic bearing (20) which is positioned on the hydraulic foundation fixing section (21), each hydraulic fixing rod (19) can swing around the hydraulic bearing (20), a hydraulic cylinder (18) is fixedly arranged on each hydraulic fixing rod (19), a hydraulic extension rod (17) which can slide back and forth and is arranged inside the hydraulic cylinder (18), and each hydraulic extension rod (17) can swing around the hydraulic bearing (20) which is positioned on the hydraulic rod frame fixing section (16).
3. The movable arm tower crane windproof device according to claim 1, characterized in that each detection plate (48) is an arc plate with a central angle slightly less than forty-five degrees.
4. The movable arm tower crane windproof device according to claim 1, characterized in that a clamping groove (40) is formed at the bottom of each counterweight body (10), and a permanent magnet (39) is arranged in the clamping groove (40).
5. The movable arm tower crane windproof device according to claim 4, characterized in that each chute pipe (13) is sleeved with a moving shell (11), each moving shell (11) is provided with six crawling roller rotating shafts (45) along axial symmetry of the chute pipe (13), each crawling roller rotating shaft (45) is provided with a crawling roller (44), each moving shell (11) is provided with a half-ring gear rotating shaft (43), each half-ring gear rotating shaft (43) is provided with a half-ring gear (26), each half-ring gear (26) is provided with a clamping block (41), and each clamping block (41) can be clamped in the clamping groove (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110833953.6A CN113353822B (en) | 2021-07-23 | 2021-07-23 | Windproof protection method for movable arm tower crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110833953.6A CN113353822B (en) | 2021-07-23 | 2021-07-23 | Windproof protection method for movable arm tower crane |
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| CN113353822A CN113353822A (en) | 2021-09-07 |
| CN113353822B true CN113353822B (en) | 2022-11-18 |
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| CN202110833953.6A Active CN113353822B (en) | 2021-07-23 | 2021-07-23 | Windproof protection method for movable arm tower crane |
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| CN112744729A (en) * | 2021-01-04 | 2021-05-04 | 广州蒋高贸易有限公司 | Tower crane |
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| DE102008047341A1 (en) * | 2008-09-15 | 2010-04-15 | Daubner & Stommel GbR Bau-Werk-Planung (vertretungsberechtigter Gesellschafter: Matthias Stommel, 27777 Ganderkesee) | Method for lifting components of wind turbines |
| CN102464270B (en) * | 2010-11-11 | 2014-05-14 | 徐州重型机械有限公司 | Overturning-preventing torque limiter and movable crane |
| CN105236270A (en) * | 2015-10-30 | 2016-01-13 | 湖南中联重科智能技术有限公司 | Gravity center detection method, device and system of tower crane and tower crane |
| CN105293301B (en) * | 2015-11-25 | 2017-08-08 | 镇海建设集团有限公司 | Windproof tower crane |
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2021
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| DE3338919A1 (en) * | 1983-10-27 | 1985-05-15 | Dornier System Gmbh, 7990 Friedrichshafen | Guying arrangement for mobile thin constructions of adjustable length, such as monotowers, aerial masts or the like |
| JPH08119582A (en) * | 1994-10-27 | 1996-05-14 | Komatsu Ltd | Overturning alarm device of working vehicle and overturning preventing method |
| CN105271024A (en) * | 2015-11-25 | 2016-01-27 | 镇海建设集团有限公司 | Tower crane with wind-proof structure |
| CN112744729A (en) * | 2021-01-04 | 2021-05-04 | 广州蒋高贸易有限公司 | Tower crane |
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| CN113353822A (en) | 2021-09-07 |
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