CN219384591U - Safe tower crane - Google Patents
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- CN219384591U CN219384591U CN202320931040.2U CN202320931040U CN219384591U CN 219384591 U CN219384591 U CN 219384591U CN 202320931040 U CN202320931040 U CN 202320931040U CN 219384591 U CN219384591 U CN 219384591U
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Abstract
The utility model relates to the technical field of tower cranes, and discloses a safe tower crane, which comprises a tower crane longitudinal beam, a tower crane cross beam rotatably arranged on the upper part of the tower crane longitudinal beam, and further comprises: the wing-type expansion symmetrical movement mechanism can keep balance of the tower crane cross beam in the rotation process so as to increase safety; wherein, the wing-type expansion symmetrical movement mechanism also comprises an electric cylinder; a toothed driving piece is arranged on a piston rod of the electric cylinder; two groups of toothed balance parts are respectively arranged on two sides of the toothed driving piece; the two groups of toothed balance parts are connected with the toothed driving part; the electric cylinder can drive the toothed driving piece through the piston rod of the electric cylinder, so that the toothed driving piece moves forwards or backwards linearly relative to the upper part of the tower crane longitudinal beam, and further, two groups of toothed balance parts expand or contract synchronously, and when the two groups of toothed balance parts expand, the balance of the tower crane cross beam in the rotation process can be increased, so that the problem of uneven stress of the tower crane cross beam in the rotation process is solved.
Description
Technical Field
The utility model relates to the technical field of tower cranes, in particular to a safe tower crane.
Background
Tower crane is referred to as tower crane for short. And the movable arm is arranged on the rotary crane at the upper part of the high-rise tower body. The working space is large, and the device is mainly used for vertical and horizontal conveying of materials and installation of building components in house building construction. The energy-saving tower crane also belongs to one type of tower crane, and particularly comprises a metal structure, a working mechanism and an electric system. The metal structure comprises a tower body, a movable arm, a base and the like. The working mechanism comprises four parts of lifting, amplitude changing, rotation and walking.
The safety of the tower crane in the rotation process is quite important, for example, a Chinese patent document with the prior patent publication number of CN 218201911U discloses a tower crane, which comprises a tower crane body consisting of a tower crane longitudinal beam, a tower crane cross beam and tower crane steel wires, wherein the tower crane longitudinal beam and the tower crane cross beam are vertically arranged, the tower crane steel wires are fixedly arranged between the tower crane cross beam and the upper part of the tower crane steel wires, an electric cylinder is fixedly arranged in the middle of one side of the top of the tower crane cross beam, a triangular wedge block is slidably arranged at one side of a piston rod of the tower crane cross beam, the end part of the piston rod of the electric cylinder is fixedly connected with one side wall of the triangular wedge block, two sides of the triangular wedge block are provided with inclined planes, and the inclined planes are symmetrically arranged;
the telescopic balance components are symmetrically arranged on the tower crane cross beam and positioned on two sides of the triangular wedge block, and one ends of the inner sides of the two groups of telescopic balance components are respectively connected with inclined planes on two sides of the triangular wedge block;
when the electric cylinder stretches through the piston rod of the electric cylinder, the triangular wedge block can slide to one side far away from the electric cylinder through the piston rod of the electric cylinder, and the two groups of telescopic balance components can do reverse motion relative to the triangular wedge block in the sliding process of the triangular wedge block.
The above patent document describes the following problems: because the tower crane is higher in height, in the process of rotating the tower crane, the stress changes in real time, so that the two sides of the tower crane beam possibly have a slight unbalance phenomenon, and the slight unbalance can be amplified in high-altitude operation, therefore, under the condition of unbalance of the two sides of the tower crane beam, the phenomenon of tilting of the tower crane body possibly occurs, and finally, the safety accident is caused. "
As can be seen from the description of the technical problem in the above patent document, in the existing tower crane, because the height of the tower crane is higher, in the process of rotating the tower crane, because the stress of the tower crane beam changes in real time, a slight imbalance phenomenon may occur on two sides of the tower crane beam, and such slight imbalance may be amplified in the overhead operation, so that under the condition that two sides of the tower crane beam are unbalanced, a phenomenon that the tower crane body is inclined may occur, and finally, a safety accident is caused.
For this purpose, a safety tower crane is now proposed.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a safe tower crane.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a safe type tower crane, includes the tower crane longeron to and rotate the tower crane crossbeam of installing in tower crane longeron upper portion, wherein, have distal end and proximal end on the tower crane crossbeam, distal end and proximal end set up relatively, the both sides between the upper surface of distal end and the upper portion of tower crane longeron are all fixed mounting has first wire rope, the both sides between the upper surface of proximal end and the upper portion of tower crane longeron are all fixed mounting has second wire rope, still include:
a wing-type expansion symmetrical movement mechanism capable of maintaining balance of the tower crane beam during rotation to increase safety, and mounted on the proximal end;
the wing-type expansion symmetrical movement mechanism further comprises an electric cylinder, wherein a cylinder barrel of the electric cylinder is fixedly arranged on one side of the upper surface of the near end, close to the tower crane longitudinal beam, and a piston rod of the electric cylinder is arranged at one end, far away from the tower crane longitudinal beam;
a toothed driving piece is arranged on a piston rod of the electric cylinder;
two groups of toothed balance parts are respectively arranged on two sides of the toothed driving part, and the two groups of toothed balance parts are symmetrically distributed by taking the toothed driving part as an axis;
the two groups of toothed balance parts are connected with the toothed driving part;
the electric cylinder can drive the toothed driving piece through the piston rod of the electric cylinder, so that the toothed driving piece moves forwards or backwards linearly relative to the upper part of the tower crane longitudinal beam, and further two groups of toothed balance parts synchronously expand or contract, and when the two groups of toothed balance parts expand, the balance of the tower crane cross beam in the rotation process can be increased.
As an optimized technical scheme, the wing-type expansion symmetrical movement mechanism further comprises two semicircular bearing plates, wherein the two semicircular bearing plates are respectively and fixedly arranged on two side walls of the two opposite sides of the proximal end, and the two semicircular bearing plates are symmetrically arranged;
the semicircular bearing plate is arranged below the toothed balance component;
a rotating shaft is fixedly arranged on the upper surface of the semicircular bearing plate;
the toothed balance component is mounted on the rotating shaft.
As an optimized technical scheme, the toothed driving piece is a toothed plate, and the side walls of two opposite sides of the toothed plate are provided with teeth;
the toothed balance component comprises a gear, and the gear is rotatably arranged on the rotating shaft;
a balance rod is fixedly arranged on the gear, and the lower surface of the balance rod is in sliding connection with the upper surface of the semicircular bearing plate;
the gear can be meshed with the teeth;
when the toothed plate moves forwards or backwards on the upper surface of the proximal end in a linear mode, the gear can rotate by taking the rotating shaft as an axis, and then the balance rod moves circularly on the upper surface of the semicircular supporting plate.
As the preferable technical scheme, the rotating shaft is fixedly sleeved with a limiting snap ring, and the inner side end surface of the limiting snap ring is rotationally connected with the outer side end surface of the gear.
As an optimal technical scheme, a waist-shaped guide groove is formed in the middle of the toothed plate;
and a limiting guide piece is arranged in the waist-shaped guide groove, and one end of the limiting guide piece is connected with the proximal end.
As an optimized technical scheme, the limit guide piece comprises a guide pillar, wherein the guide pillar penetrates downwards from a waist-shaped guide groove, and the bottom end surface is fixedly connected with the upper surface of the proximal end and can be in sliding connection with the waist-shaped guide groove;
the guide post is fixedly provided with a limiting plate, and the lower surface of the limiting plate can be in surface contact with the upper surface of the toothed plate and is in sliding connection with the upper surface of the toothed plate.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the electric cylinder can drive the toothed driving part through the piston rod of the electric cylinder, so that the toothed driving part moves forwards or backwards in a straight line relative to the upper part of the tower crane longitudinal beam, and further, two groups of toothed balance parts expand or contract synchronously, and when the two groups of toothed balance parts expand, the balance of the tower crane cross beam in the rotation process can be increased, so that the problem of uneven stress of the tower crane cross beam on the tower crane longitudinal beam in the rotation process is solved, and the safety of the tower crane in the rotation process is further enhanced.
2. According to the utility model, the two semicircular bearing plates can respectively support the two groups of toothed balance parts, so that the two groups of toothed balance parts can synchronously expand or contract along with the movement of the toothed driving part.
3. In the utility model, the gear can be meshed with the teeth, and when the toothed plate moves forwards or backwards on the upper surface of the near end in a linear motion, the gear can rotate by taking the rotating shaft as the shaft, so that the balance rods do circular rotation on the upper surface of the semicircular supporting plate, and the two balance rods can synchronously expand or synchronously contract.
4. According to the utility model, the limiting snap ring is fixedly sleeved on the rotating shaft, the inner side end surface of the limiting snap ring is rotationally connected with the outer side end surface of the gear, and the limiting snap ring can prevent the gear from slipping on the rotating shaft, so that the safety of the toothed balance component in movement is improved.
5. In the utility model, the limit guide piece can enable the toothed plate to have better guidance quality in the movement process, and meanwhile, the limit guide piece can also prevent the toothed plate from tilting in the movement process.
6. According to the utility model, the guide post penetrates downwards from the waist-shaped guide groove, the bottom end face is fixedly connected with the upper surface of the near end and can be in sliding connection with the waist-shaped guide groove, the guide post is fixedly provided with the limiting plate, the lower surface of the limiting plate can be in surface contact with the upper surface of the toothed plate and is in sliding connection with the upper surface of the toothed plate, and therefore the guiding and limiting effect of the limiting guide piece on the toothed driving piece is further realized.
Drawings
FIG. 1 is a schematic three-dimensional structure of a safety tower crane according to the present utility model after a wing-type expansion symmetrical movement mechanism mounted on a proximal end is fully extended;
FIG. 2 is an enlarged schematic view of the three-dimensional structure of the portion A in FIG. 1;
FIG. 3 is a schematic three-dimensional structure of a wing-type expansion symmetrical movement mechanism in a safe tower crane after the wing-type expansion symmetrical movement mechanism is fully unfolded;
fig. 4 is a schematic three-dimensional structure of a combination of a toothed driving member and a limiting guide member in a safety tower crane according to the present utility model;
FIG. 5 is a schematic three-dimensional structure of a safe tower crane according to the present utility model after a wing-type expansion symmetrical motion mechanism mounted on a proximal end is fully contracted inwards;
fig. 6 is a schematic three-dimensional structure diagram of a wing-type expansion symmetrical movement mechanism in a safe tower crane after the wing-type expansion symmetrical movement mechanism is completely contracted inwards.
In the figure: 1. a tower crane longitudinal beam; 2. a tower crane beam; 201. a distal end; 202. a proximal end; 3. a first wire rope; 4. a second wire rope; 5. wing-type expansion symmetrical movement mechanism; 501. an electric cylinder; 502. a toothed driving member; 5021. a toothed plate; 5022. teeth; 5023. a waist-shaped guide groove; 503. a limit guide; 5031. a guide post; 5032. a limiting plate; 504. a semicircular bearing plate; 505. a rotating shaft; 506. a toothed balance member; 5061. a gear; 5062. a balance bar; 507. and a limiting snap ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Tower crane is referred to as tower crane for short. And the movable arm is arranged on the rotary crane at the upper part of the high-rise tower body. The working space is large, and the device is mainly used for vertical and horizontal conveying of materials and installation of building components in house building construction. The energy-saving tower crane also belongs to one type of tower crane, and particularly comprises a metal structure, a working mechanism and an electric system. The metal structure comprises a tower body, a movable arm, a base and the like. The working mechanism comprises four parts of lifting, amplitude changing, rotation and walking.
The safety of a tower crane in the process of rotation is quite important, for example, a traditional Chinese patent document with the patent publication number of CN 218201911U discloses a tower crane, which comprises a tower crane body consisting of a tower crane longitudinal beam, a tower crane cross beam and a tower crane steel wire.
The above patent document describes the following problems: because the tower crane is higher in height, in the process of rotating the tower crane, the stress changes in real time, so that the two sides of the tower crane beam possibly have a slight unbalance phenomenon, and the slight unbalance can be amplified in high-altitude operation, therefore, under the condition of unbalance of the two sides of the tower crane beam, the phenomenon of tilting of the tower crane body possibly occurs, and finally, the safety accident is caused. "
As can be seen from the description of the technical problem in the above patent document, in the existing tower crane, because the height of the tower crane is higher, in the process of rotating the tower crane, because the stress of the tower crane beam changes in real time, a slight imbalance phenomenon may occur on two sides of the tower crane beam, and such slight imbalance may be amplified in the overhead operation, so that under the condition that two sides of the tower crane beam are unbalanced, a phenomenon that the tower crane body is inclined may occur, and finally, a safety accident is caused.
The inventor adopts a technical scheme different from the Chinese patent document with the patent publication number of CN 218201911U, and the technical scheme is as follows:
referring to fig. 1-6, the present utility model provides the following technical solutions:
as shown in fig. 1 to 6, a safety tower crane includes a tower crane girder 1 and a tower crane beam 2 rotatably mounted on an upper portion of the tower crane girder 1, wherein the tower crane beam 2 has a distal end 201 and a proximal end 202, the distal end 201 and the proximal end 202 are oppositely disposed, two sides between an upper surface of the distal end 201 and an upper portion of the tower crane girder 1 are fixedly mounted with a first steel wire rope 3, two sides between an upper surface of the proximal end 202 and an upper portion of the tower crane girder 1 are fixedly mounted with a second steel wire rope 4, and the safety tower crane further includes:
a wing-type expansion symmetrical movement mechanism 5 capable of maintaining balance of the tower crane beam 2 during rotation to increase safety, and mounted on the proximal end 202;
the wing-type expansion symmetrical movement mechanism 5 further comprises an electric cylinder 501, wherein a cylinder barrel of the electric cylinder 501 is fixedly arranged on one side of the upper surface of the proximal end 202, which is close to the tower crane longitudinal beam 1, and a piston rod of the electric cylinder 501 is arranged at one end, which is far away from the tower crane longitudinal beam 1;
a toothed driving piece 502 is arranged on a piston rod of the electric cylinder 501;
two groups of toothed balance parts 506 are respectively arranged on two sides of the toothed driving piece 502, and the two groups of toothed balance parts 506 are symmetrically distributed by taking the toothed driving piece 502 as an axis;
both sets of toothed balance members 506 are connected to toothed drive 502;
the electric cylinder 501 can drive the toothed driving piece 502 through a piston rod thereof, so that the toothed driving piece 502 moves forwards or backwards linearly relative to the upper part of the tower crane longitudinal beam 1, and further, two groups of toothed balance parts 506 synchronously expand or contract, and when the two groups of toothed balance parts 506 expand, the balance of the tower crane cross beam 2 in the rotation process can be increased, thereby overcoming the problem that the tower crane cross beam 2 is stressed unevenly on the tower crane longitudinal beam 1 in the rotation process, and further enhancing the safety of the tower crane in the rotation process.
Example two
As shown in fig. 1 to 6, the improvement is based on the first embodiment:
further, the wing-type expanding symmetrical movement mechanism 5 further comprises two semicircular supporting plates 504, wherein the two semicircular supporting plates 504 are fixedly arranged on two side walls of the proximal end 202 opposite to each other, and the two semicircular supporting plates 504 are symmetrically arranged;
a semicircular bearing plate 504 is provided below the toothed balance member 506;
a rotating shaft 505 is fixedly arranged on the upper surface of the semicircular bearing plate 504;
a toothed balance member 506 is mounted on the spindle 505.
In this embodiment, two semicircular bearing plates 504 can support two sets of toothed balance members 506, respectively, such that the two sets of toothed balance members 506 can move in a synchronized expansion or contraction with the movement of the toothed driver 502.
Further, the toothed driving piece 502 is a toothed plate 5021, and two opposite side walls of the toothed plate 5021 are provided with teeth 5022;
the toothed balance 506 includes a gear 5061, the gear 5061 being rotatably mounted on the shaft 505;
a balance rod 5062 is fixedly arranged on the gear 5061, and the lower surface of the balance rod 5062 is in sliding connection with the upper surface of the semicircular bearing plate 504;
gear 5061 is capable of meshing with tooth 5022;
when the toothed plate 5021 moves linearly forward or backward on the upper surface of the proximal end 202, the gear 5061 can rotate about the rotation shaft 505, so that the balance bar 5062 moves circumferentially on the upper surface of the semicircular support plate 504, and the two balance bars 5062 can expand or contract synchronously.
As shown in fig. 1 to 3, the piston rod of the electric cylinder 501 is in a state of moving to the maximum stroke, at this time, the piston rod of the electric cylinder 501 can push the toothed plate 5021 to do forward linear motion, after the piston rod of the electric cylinder 501 moves to the maximum stroke, the gear 5061 can rotate 90 ° with the rotating shaft 505 as the shaft, after the gear rotates 90 °, the balance rod 5062 can synchronously rotate 90 ° along with the rotation of the gear 5061, at this time, the two balance rods 5062 are in a state of 180 ° on the two semicircular bearing plates 504, and the two balance rods 5062 in a state of 180 ° are mutually perpendicular to the tower crane beam 2, so that the balance effect of the tower crane beam 2 in the rotation process can be realized under the action of the two balance rods 5062.
As shown in fig. 5 to 6, in fig. 5 and 6, the piston rod of the electric cylinder 501 is in a state after running to the minimum stroke, at this time, the piston rod of the electric cylinder 501 can pull the toothed plate 5021 to do a backward linear motion, after running to the minimum stroke, the gear 5061 can rotate by 90 ° with the rotating shaft 505 as the shaft, after the gear rotates by 90 ° in the opposite direction, the balance bar 5062 can rotate by 90 ° in the opposite direction along with the reverse rotation of the gear 5061, at this time, the two balance bars 5062 present a parallel state on the two semicircular support plates 504, namely: both the two balancing rods 5062 are parallel to the tower crane cross beam 2, so that the effect of inwards shrinking the two balancing rods 5062 is achieved.
Example III
As shown in fig. 1 to 6, the improvement is based on the second embodiment:
further, a limiting snap ring 507 is fixedly sleeved on the rotating shaft 505, and the inner side end surface of the limiting snap ring 507 is rotationally connected with the outer side end surface of the gear 5061.
In the present embodiment, the limiting snap ring 507 can prevent the gear 5061 from slipping on the rotation shaft 505, thereby improving the safety of the toothed balance 506 during movement.
Example IV
As shown in fig. 1 to 6, the improvement is based on the second embodiment:
further, a waist-shaped guide groove 5023 is formed in the middle of the toothed plate 5021;
a limiting guide member 503 is installed in the waist-shaped guide groove 5023, and one end of the limiting guide member 503 is connected with the proximal end 202.
In this embodiment, the limit guide 503 can make the toothed plate 5021 have better guiding performance during the movement, and at the same time, the limit guide 503 can also prevent the toothed plate 5021 from tilting during the movement.
Example five
As shown in fig. 1 to 6, the improvement is based on the fourth embodiment:
further, the limiting guide member 503 includes a guide pillar 5031, the guide pillar 5031 is penetrated downward by the waist-shaped guide groove 5023, and the bottom end surface is fixedly connected with the upper surface of the proximal end 202 and can be slidably connected with the waist-shaped guide groove 5023;
the guide pillar 5031 is fixedly provided with the limiting plate 5032, and the lower surface of the limiting plate 5032 can be in surface contact with the upper surface of the toothed plate 5021 and is in sliding connection with the upper surface of the toothed plate 5021, so that the guiding and limiting effect of the limiting guide part 503 on the toothed driving part 502 is further realized.
In summary, the working procedure of the utility model: the electric cylinder 501 can drive the toothed driving piece 502 through a piston rod of the electric cylinder, so that the toothed driving piece 502 moves forwards or backwards in a straight line relative to the upper part of the tower crane longitudinal beam 1, and further, two groups of toothed balance parts 506 expand or contract synchronously, and when the two groups of toothed balance parts 506 expand, the balance of the tower crane cross beam 2 in the rotation process can be increased, and therefore, the problem that the tower crane cross beam 2 is stressed unevenly in the rotation process on the tower crane longitudinal beam 1 is solved, and the safety of the tower crane in the rotation process is further enhanced;
the two semicircular bearing plates 504 can respectively support the two sets of toothed balance parts 506, so that the two sets of toothed balance parts 506 can synchronously expand or contract along with the movement of the toothed driving piece 502;
the gear 5061 can be meshed with the teeth 5022, and when the toothed plate 5021 makes forward or backward linear motion on the upper surface of the proximal end 202, the gear 5061 can rotate by taking the rotating shaft 505 as an axis, so that the balance rod 5062 makes circumferential rotation on the upper surface of the semicircular bearing plate 504, and the two balance rods 5062 can synchronously expand or synchronously contract;
as shown in fig. 1 to 3, the piston rod of the electric cylinder 501 is in a state of moving to the maximum stroke, at this time, the piston rod of the electric cylinder 501 can push the toothed plate 5021 to do forward linear motion, after the piston rod of the electric cylinder 501 moves to the maximum stroke, the gear 5061 can rotate 90 ° with the rotating shaft 505 as the shaft, after the gear rotates 90 °, the balance rod 5062 can synchronously rotate 90 ° along with the rotation of the gear 5061, at this time, the two balance rods 5062 are in a state of 180 ° on the two semicircular bearing plates 504, and the two balance rods 5062 in a state of 180 ° are mutually perpendicular to the tower crane beam 2, so that the balance effect of the tower crane beam 2 in the rotation process can be realized under the action of the two balance rods 5062.
As shown in fig. 5 to 6, in fig. 5 and 6, the piston rod of the electric cylinder 501 is in a state after running to the minimum stroke, at this time, the piston rod of the electric cylinder 501 can pull the toothed plate 5021 to do a backward linear motion, after running to the minimum stroke, the gear 5061 can rotate by 90 ° with the rotating shaft 505 as the shaft, after the gear rotates by 90 ° in the opposite direction, the balance bar 5062 can rotate by 90 ° in the opposite direction along with the reverse rotation of the gear 5061, at this time, the two balance bars 5062 present a parallel state on the two semicircular support plates 504, namely: both the two balancing rods 5062 are parallel to the tower crane cross beam 2, so that the effect of inwards shrinking the two balancing rods 5062 is achieved.
A limiting snap ring 507 is fixedly sleeved on the rotating shaft 505, the inner side end surface of the limiting snap ring 507 is rotationally connected with the outer side end surface of the gear 5061, and the limiting snap ring 507 can prevent the gear 5061 from slipping on the rotating shaft 505, so that the safety of the toothed balance component 506 in movement is improved;
the limiting guide piece 503 can enable the toothed plate 5021 to have better guiding performance in the movement process, and meanwhile, the limiting guide piece 503 can also prevent the toothed plate 5021 from tilting in the movement process;
the guide pillar 5031 is penetrated downwards by the waist-shaped guide groove 5023, the bottom end face is fixedly connected with the upper surface of the proximal end 202 and can be in sliding connection with the waist-shaped guide groove 5023, the limiting plate 5032 is fixedly installed on the guide pillar 5031, the lower surface of the limiting plate 5032 can be in surface contact with the upper surface of the toothed plate 5021 and is in sliding connection with the upper surface of the toothed plate 5021, and therefore the guiding and limiting effects of the limiting guide piece 503 on the toothed driving piece 502 are further achieved.
What is worth explaining is that the design inspiration of this safe type tower crane derives from the high altitude person who walks the steel wire, and when the high altitude person who walks the steel wire by the empty hand, the stationarity is relatively poor, but when the person holds the stock as balancing measure, can be more steady when the high altitude person who walks the steel wire, adopts this principle and with the help of lever principle, through the improvement of this application for the security performance of this safe type tower crane obtains promoting by a wide margin, and the wind resistance can also reach promotion by a wide margin.
The above-mentioned different embodiments can be mutually combined, replaced and matched for use.
None of the utility models are related to the same or are capable of being practiced in the prior art. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a safe type tower crane, includes tower crane longeron (1) to and rotate tower crane crossbeam (2) of installing on tower crane longeron (1) upper portion, wherein, have distal end (201) and proximal end (202) on tower crane crossbeam (2), distal end (201) and proximal end (202) set up relatively, the equal fixed mounting in both sides between the upper surface of distal end (201) and the upper portion of tower crane longeron (1) has first wire rope (3), the both sides between the upper surface of proximal end (202) and the upper portion of tower crane longeron (1) are all fixed mounting have second wire rope (4), its characterized in that still includes:
a wing-type expansion symmetrical movement mechanism (5) capable of balancing the tower crane beam (2) during rotation to increase safety, and mounted on the proximal end (202);
the wing-type expansion symmetrical movement mechanism (5) further comprises an electric cylinder (501), a cylinder barrel of the electric cylinder (501) is fixedly arranged on one side, close to the upper surface of the tower crane longitudinal beam (1), of the proximal end (202), and a piston rod of the electric cylinder (501) is arranged at one end, far away from the tower crane longitudinal beam (1);
a toothed driving piece (502) is arranged on a piston rod of the electric cylinder (501);
two groups of toothed balance parts (506) are respectively arranged on two sides of the toothed driving piece (502), and the two groups of toothed balance parts (506) are symmetrically distributed by taking the toothed driving piece (502) as an axis;
both sets of said toothed balance members (506) are connected to a toothed drive (502);
the electric cylinder (501) can drive the toothed driving piece (502) through a piston rod of the electric cylinder, so that the toothed driving piece (502) moves forwards or backwards linearly relative to the upper part of the tower crane longitudinal beam (1), and further two groups of toothed balance components (506) synchronously expand or contract, and when the two groups of toothed balance components (506) expand, the balance of the tower crane cross beam (2) in the rotation process can be increased.
2. A safety tower crane according to claim 1, wherein: the wing-type expansion symmetrical movement mechanism (5) further comprises two semicircular bearing plates (504), and the two semicircular bearing plates (504) are respectively and fixedly arranged on two side walls of the proximal end (202) which are oppositely arranged.
3. A safety tower crane according to claim 2, wherein: the two semicircular bearing plates (504) are symmetrically arranged;
the semicircular bearing plate (504) is arranged below the toothed balance component (506);
a rotating shaft (505) is fixedly arranged on the upper surface of the semicircular supporting plate (504);
the toothed balance member (506) is mounted on the rotating shaft (505).
4. A safety tower crane according to claim 2, wherein: the toothed driving piece (502) is a toothed plate (5021), and teeth (5022) are arranged on two side walls of the toothed plate (5021) opposite to each other;
the toothed balance member (506) comprises a gear (5061), the gear (5061) being rotatably mounted on the shaft (505).
5. The safety tower crane of claim 4, wherein: a balance rod (5062) is fixedly arranged on the gear (5061), and the lower surface of the balance rod (5062) is in sliding connection with the upper surface of the semicircular bearing plate (504);
the gear (5061) can be meshed with teeth (5022);
when the toothed plate (5021) moves forward or backward on the upper surface of the proximal end (202), the gear (5061) can rotate by taking the rotating shaft (505) as an axis, so that the balance rod (5062) moves circularly on the upper surface of the semicircular bearing plate (504).
6. The safety tower crane of claim 5, wherein: and a limiting snap ring (507) is fixedly sleeved on the rotating shaft (505), and the inner side end surface of the limiting snap ring (507) is rotationally connected with the outer side end surface of the gear (5061).
7. The safety tower crane of claim 5, wherein: a waist-shaped guide groove (5023) is formed in the middle of the toothed plate (5021);
and a limiting guide piece (503) is arranged in the waist-shaped guide groove (5023), and one end of the limiting guide piece (503) is connected with the proximal end (202).
8. The safety tower crane of claim 7, wherein: the limiting guide piece (503) comprises a guide post (5031), the guide post (5031) is penetrated downwards by a waist-shaped guide groove (5023), and the bottom end surface is fixedly connected with the upper surface of the proximal end (202) and can be in sliding connection with the waist-shaped guide groove (5023);
and a limiting plate (5032) is fixedly arranged on the guide post (5031), and the lower surface of the limiting plate (5032) can be in surface contact with the upper surface of the toothed plate (5021) and is in sliding connection with the upper surface of the toothed plate (5021).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320931040.2U CN219384591U (en) | 2023-04-23 | 2023-04-23 | Safe tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320931040.2U CN219384591U (en) | 2023-04-23 | 2023-04-23 | Safe tower crane |
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| CN219384591U true CN219384591U (en) | 2023-07-21 |
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