CN116853964A - Tower crane step changing device and tower crane - Google Patents
Tower crane step changing device and tower crane Download PDFInfo
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- CN116853964A CN116853964A CN202310587237.3A CN202310587237A CN116853964A CN 116853964 A CN116853964 A CN 116853964A CN 202310587237 A CN202310587237 A CN 202310587237A CN 116853964 A CN116853964 A CN 116853964A
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- tower crane
- changing
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- swing
- clamping
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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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
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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
- B66C13/18—Control systems or 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
- B66C23/88—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Abstract
本发明公开一种塔机换步装置及塔机，塔机换步装置包括换步架和换步摆杆，换步架包括两个支撑臂和连接两个支撑臂的连接横梁，两个支撑臂的上端均铰接于爬升架的上直腹杆上，并且下端均形成有与塔机标准节上的踏步对应的卡装口，换步摆杆上端铰接于上直腹杆上，并用于在施力于下端的情况下推动或拉动连接横梁。则操作人员通过换步摆杆带动整个换步架进行摆转，以实现将换步架挂入踏步或脱出踏步的操作，相较于直接控制换步架的方案，操作过程更加省力，即使是单人也能操作重量较大的换步架挂入踏步或脱出踏步，有效提高了换步效率。
The invention discloses a tower crane step change device and a tower crane. The tower crane step change device includes a step change frame and a step change swing bar. The step change frame includes two support arms and a connecting beam connecting the two support arms. The two supports The upper ends of the arms are hinged to the upper straight web rod of the climbing frame, and the lower ends are formed with clamping openings corresponding to the steps on the standard section of the tower crane. The upper end of the step change swing rod is hinged to the upper straight web rod and is used to Push or pull the connecting beam while applying force to the lower end. Then the operator drives the entire step-change frame to swing through the step-change lever to achieve the operation of hanging the step-change frame into or out of the steps. Compared with the solution of directly controlling the step-change frame, the operation process is more labor-saving, even if it is A single person can also operate the heavier step-changing frame to hang into or take off the steps, which effectively improves the step-changing efficiency.
Description
Technical Field
The invention belongs to the technical field of hoisting equipment, and particularly relates to a step-changing device of a tower crane and the tower crane.
Background
The step change is an important step in the process of lifting or lowering the tower of the tower crane, and the specific operation flow is as follows: when the lifting device is lifted, the lifting oil cylinder firstly lifts the tower crane to the height of one step, then the step changing device is hung into the standard section step to support the upper part of the tower crane, finally the lifting oil cylinder is retracted, and the lifting cross beam is hung into the group of standard section steps to complete a step changing operation flow. When the tower is lowered, the jacking oil cylinder is retracted, the height of the tower crane is lowered by one step, then the step changing device is hung into a standard section step to support the upper part of the tower crane, finally the jacking oil cylinder is extended again, and the jacking cross beam is hung into a group of standard section steps below the standard section to complete a step changing operation flow.
In the prior art, the operation of hanging in the stepping and taking out the stepping of the step-changing device is manually completed by operators in the tower crane, especially in a medium-sized and small-sized tower crane, but the weight of the step-changing device is large, the operation of hanging in the stepping or taking out the stepping of the step-changing device is very laborious, multiple people are often required to be operable, and the step-changing efficiency is low.
Disclosure of Invention
Aiming at the defects or shortcomings, the invention provides a step-changing device of a tower crane and the tower crane, and aims to solve the technical problems that the existing step-changing device is laborious to operate when being hung into a step or being taken out of the step, and multiple people are required to operate simultaneously, so that the step-changing efficiency is low.
In order to achieve the above purpose, the invention provides a step-changing device of a tower crane, wherein the step-changing device of the tower crane comprises a step-changing frame and a step-changing swing rod, the step-changing frame comprises two supporting arms and a connecting cross beam for connecting the two supporting arms, the upper ends of the two supporting arms are hinged on an upper straight web member of a climbing frame, the lower ends of the two supporting arms are respectively provided with a clamping opening corresponding to a step on a standard section of the tower crane, and the upper ends of the step-changing swing rod are hinged on the upper straight web member and are used for pushing or pulling the connecting cross beam under the condition that force is applied to the lower ends, so that the two supporting arms of the step-changing frame are hung in or pulled out of the step.
In the embodiment of the invention, the swing rod of the step change is provided with a swing sliding column, the inner side of the connecting beam is extended and provided with a clamping plate, and the clamping plate is provided with a sliding groove for the swing sliding column to swing and slide.
In the embodiment of the invention, the number of the clamping plates is two, the clamping plates are oppositely arranged at the inner side of the connecting cross beam at intervals, the step-changing swing rod is arranged between the two clamping plates, and swing sliding columns penetrating through the sliding grooves of the two clamping plates in a one-to-one correspondence manner are arranged at the two opposite sides.
In the embodiment of the invention, the sliding groove is vertically extended and provided with an upper end opening or a lower end opening.
In the embodiment of the invention, the step-changing device of the tower crane further comprises a connecting seat arranged on the lower straight web member of the climbing frame, and the lower end of the step-changing swing rod is detachably connected to the connecting seat.
In the embodiment of the invention, the connecting seat comprises two connecting lug plates which are oppositely arranged at intervals, and the step-changing swing rod is arranged between the two connecting lug plates and is detachably connected in series through a bolt.
In an embodiment of the invention, the latch is used to connect with the lower web member via a link.
In the embodiment of the invention, the inner side of the connecting cross beam is also provided with an abutting block which is used for abutting against the main chord of the climbing frame.
In the embodiment of the invention, the supporting arm comprises an arm main body and a connecting rod, the connecting rod extends from the inner side of the connecting beam, the arm main body comprises a hinge section which is obliquely inwards arranged from top to bottom and a clamping section which is vertically extended from the lower end of the hinge section, the joint of the hinge section and the clamping section is connected with one end of the connecting rod, which is far away from the connecting beam, the hinge section is used for being hinged with an upper straight web member of the climbing frame, and the lower end of the clamping section forms a clamping opening.
In order to achieve the above object, the present invention also provides a tower crane, wherein the tower crane comprises a tower crane step-change device according to the above.
Through the technical scheme, the step-changing device of the tower crane provided by the embodiment of the invention has the following beneficial effects:
when the tower crane is used, the step-changing device of the tower crane comprises the step-changing frame and the step-changing swing rod, the step-changing frame comprises two supporting arms and a connecting cross beam for connecting the two supporting arms, the upper ends of the two supporting arms are hinged to the upper straight web members of the climbing frame, clamping ports corresponding to steps on standard joints of the tower crane are formed in the lower ends of the two supporting arms, the upper ends of the step-changing swing rod are hinged to the upper straight web members, and the step-changing swing rod is used for pushing or pulling the connecting cross beam under the condition that force is applied to the lower ends. The operation staff drives the whole step-changing frame to swing through the operation step-changing swing rod to realize hanging the step-changing frame into step or deviate from step, compare in the scheme of direct control step-changing frame, the operation process is more laborsaving, even single also can operate the great step-changing frame of weight and hang into step or deviate from step, effectively improved step-changing efficiency, moreover through the length of extension step-changing swing rod, the operating personnel can operate in the position far away, need not to set up the platform that supplies the operating personnel work in step-changing frame department directly, reduce cost.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide an understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
FIG. 1 is a schematic view of a step-change device of a tower crane according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of a tower crane step change apparatus on a climbing frame in accordance with an embodiment of the present invention;
FIG. 4 is a partial enlarged view at B in FIG. 3;
FIG. 5 is a schematic view of a tower crane when the swing arm swings outwardly according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a tower crane when the step change pendulum rod swings inwards according to an embodiment of the present invention.
Description of the reference numerals
1. Support arm for frame 11
111. Clamping port 112 connecting rod
113. Hinge segment 114 snap-fit segment
12. Connecting beam 121 abutting block
13. Clamping plate 131 sliding groove
2. Swing and sliding column of step-changing swing rod 21
3. Connecting seat 4 bolt
5. Link 6 climbing frame
61. Upper and lower web members 62 and 62
63. Main chord 7 steps
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The step-changing device of the tower crane and the tower crane according to the invention are described below with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a step-changing device of a tower crane, wherein the step-changing device of the tower crane includes:
the step-changing frame 1 comprises two supporting arms 11 and a connecting cross beam 12 for connecting the two supporting arms 11, wherein the upper ends of the two supporting arms 11 are hinged on an upper straight web member 61 of the climbing frame 6, and the lower ends of the two supporting arms are respectively provided with a clamping opening 111 corresponding to a step 7 on a standard section of the tower crane;
the upper end of the step-changing swing rod 2 is hinged on the upper vertical web member 61 and is used for pushing or pulling the connecting cross beam 12 under the condition that force is applied to the lower end, so that the two supporting arms 11 of the step-changing frame 1 are hung in or separated from the steps 7.
When the step changing device of the tower crane is used, as the step changing frame 1 and the step changing swing rod 2 are included, the step changing swing rod 2 and the two supporting arms 11 of the step changing frame 1 are hinged with the upper straight web member 61, the clamping openings 111 corresponding to the steps 7 on the standard section of the tower crane are formed at the lower ends of the supporting arms 11, an operator drives the step changing frame 1 to swing through the step changing swing rod 2 so as to hang the step changing frame 1 into the steps 7 or release the steps 7, compared with the scheme of directly controlling the step changing frame 1, the operation process is more labor-saving, even a single person can operate the step changing frame 1 with larger weight to hang the steps 7 or release the steps 7, the step changing efficiency is effectively improved, and the operator can perform step changing operation at a far position by prolonging the length of the step changing swing rod 2 without directly arranging a platform for the operator to work at the step changing frame 1, so that the cost is reduced.
Specifically, the connecting beam 12 adopts i-steel to ensure the structural strength, and of course, the structural shape of the connecting beam 12 is not limited to an i-shape, and the connecting beam can be arranged into square tubes, rectangular tubes, box-shaped beams spliced by plates and other structural forms on the premise of ensuring the structural strength.
In the present invention, the inner side and the outer side are the inner side with respect to the tower crane standard section, and the outer side with respect to the tower crane standard section.
As shown in fig. 2, in the embodiment of the present invention, a swing sliding column 21 is disposed on the step-changing swing rod 2, a clamping plate 13 is disposed on the inner side of the connecting beam 12 in an extending manner, and a sliding groove 131 for performing swing sliding of the swing sliding column 21 is disposed on the clamping plate 13. The operating personnel control step change pendulum rod 2 carries out the pendulum conversion, and the pendulum that changes on the step pendulum rod 2 slides along the groove 131 that slides and drives the frame 1 of taking a step and carry out corresponding pendulum and change, and cardboard 13 sets up in the inboard of connecting crossbeam 12, and more convenient operating personnel carries out force application control to the step change pendulum rod 2, in addition, because pendulum changes and slides between post 21 and the cardboard 13 the accessible groove 131 that slides and realize relative movement, the pendulum conversion process of tower machine step change device is more smooth and easy, avoids appearing the dead phenomenon of card.
The card 13 is not limited to being provided on the inner side of the cross member 12, and may be provided on the outer side. In addition, the connection manner between the step-changing swing rod 2 and the connecting beam 12 is not limited to the swing sliding column 21 and the sliding groove 131, and may be an abutting connection or a fixed connection. When the step-changing swing rod 2 is in butt joint with the connecting beam 12, the step-changing swing rod 2 is only used for taking the step-changing frame 1 out of the step 7, and the process of hanging the supporting arm 11 into the step 7 is realized by the gravity of the supporting arm 11 and the connecting beam 12 and the direct control of an operator on the connecting beam 12; when the step-changing swing rod 2 is fixedly connected with the connecting beam 12 (such as in threaded connection or welding, etc.), the upper end of the step-changing swing rod 2 is directly fixed on the connecting beam 12 without being hinged with the upper straight web member 61.
In the embodiment of the invention, the number of the clamping plates 13 is two, the clamping plates are oppositely arranged at intervals on the inner side of the connecting cross beam 12, the step change swing rod 2 is arranged between the two clamping plates 13, and swing sliding columns 21 penetrating through the sliding grooves 131 of the two clamping plates 13 in a one-to-one correspondence manner are arranged on the opposite sides. The number of the clamping plates 13 is two, so that the stress intensity of a single clamping plate 13 can be reduced, the service life of the clamping plate 13 is prolonged, and compared with the single clamping plate 13, the structure is better in stability. Specifically, a reinforcing plate is further connected between the two clamping plates 13, so that the overall structural strength of the two clamping plates 13 is improved, and deformation is avoided.
In the embodiment of the present invention, the sliding groove 131 is vertically extended and has an upper end opening or a lower end opening. When the support arm 11 is hung in the step 7, an operator controls the step-changing swing rod 2 to swing inwards, the swing sliding column 21 moves upwards along the sliding groove 131 and drives the step-changing frame 1 to swing inwards until the clamping opening 111 of the support arm 11 is aligned with the step 7; when the supporting arm 11 is separated from the step 7, an operator controls the step-changing swing rod 2 to swing outwards, and the swing sliding column 21 moves downwards along the sliding groove 131 and drives the step-changing frame 1 to swing outwards. The sliding groove 131 extends vertically, so that the swing sliding column 21 can be fast clamped in the sliding groove 131 through the design of the opening, and the disassembly and the installation are convenient. Specifically, the length of the sliding groove 131 is set according to the maximum deflection angle of the step-changing swing rod 2, so as to avoid the swing sliding column 21 from falling out of the sliding groove 131.
As shown in fig. 3 and 4, in the embodiment of the present invention, the step-changing device of the tower crane further includes a connection seat 3 provided on the lower straight web member 62 of the climbing frame 6, and the lower end of the step-changing swing rod 2 is detachably connected to the connection seat 3. The setting of connecting seat 3 can be after accomplishing the operation of changing steps of tower machine with change step pendulum rod 2 and change step frame 1 fixed, avoids both to send the collision because external force swing and with the standard festival of tower machine or climbing frame 6 in the tower machine working process, leads to the tower machine impaired.
As shown in fig. 4, in the embodiment of the present invention, the connection base 3 includes two connection lugs arranged at opposite intervals, and the step-changing swing rod 2 is disposed between the two connection lugs and detachably connected in series through the latch 4. The design of the serial connection of the bolts 4 is convenient for operators to disassemble and assemble.
In the present invention, the connection between the step-changing swing rod 2 and the connection base 3 is not limited to the plug connection, and may be a threaded connection or a snap connection.
In the embodiment of the invention, the bolt 4 is used to connect with the lower web member 62 via the link 5. The bolt 4 can be connected to the lower straight web member 62 by the arrangement of the link 5, so that the bolt 4 is not required to be stored independently, and is convenient to take and put, and the loss of the bolt 4 is prevented. Specifically, considering the actual use environment of the step-changing device of the tower crane, the link 5 is preferably a chain, and the end of the chain, to which the latch 4 is not connected, is welded to the lower web member 62 by welding. Further, an external thread section may be further provided at an end of the plug 4 remote from the link 5, and the plug 4 is prevented from being removed by a coupling nut.
As shown in fig. 1 and 3, in the embodiment of the present invention, an abutment block 121 for abutting against the main chord 63 of the climbing frame 6 is further provided to protrude from the inner side of the connecting beam 12. After the supporting arm 11 is hung into the step 7, the abutting block 121 abuts against the outer side of the main chord member 63 so as to bear the force of the step changing frame 1 in the horizontal direction, so that the step changing device of the tower crane is more stable, the whole step changing process is more stable, and obvious shaking is avoided. Specifically, the number of the abutment blocks 121 is two, and the two abutment blocks 121 are provided at both ends of the connecting beam 12 and abut against the main chords 63 at both sides of the climbing frame 6 in a one-to-one correspondence.
In the embodiment of the invention, the supporting arm 11 comprises an arm main body and a connecting rod 112, the connecting rod 112 extends from the inner side of the connecting beam 12, the arm main body comprises a hinge section 113 which is arranged from top to bottom in an inclined inward manner and a clamping section 114 which is arranged from the lower end of the hinge section 113 in a vertical extending manner, the joint of the hinge section 113 and the clamping section 114 is connected with one end of the connecting rod 112 far away from the connecting beam 12, the hinge section 113 is used for being hinged with the upper straight web member 61 of the climbing frame 6, and the lower end of the clamping section 114 forms a clamping opening 111. By the arrangement, the supporting arm 11 is made to be similar to an L-shaped structure, the length of the supporting arm 11 in the horizontal direction is prolonged, and the connecting cross beam 12 can be positioned on the outer side of the climbing frame 6; because the hinge sections 113 are arranged obliquely inwards from top to bottom, when the whole supporting arm 11 swings inwards, the clamping sections 114 can be opposite to the steps 7, and the supporting stability is improved.
In addition, the invention also provides a tower crane, wherein the tower crane comprises the tower crane step-changing device. Because the tower crane adopts all the technical schemes of the above embodiments, the tower crane has at least all the beneficial effects brought by the technical schemes of the above embodiments, and will not be described in detail herein.
Specifically, referring to fig. 5, when the step-changing device is separated from the step 7, the step-changing swing rod 2 moves in a direction away from the standard section of the tower crane, and the step-changing swing rod 2 drives the step-changing frame 1 to swing outwards through the swing sliding column 21 in the sliding groove 131; referring to fig. 6, when the step-changing device is hung into the step 7, the step-changing swing rod 2 moves in a direction approaching to the standard section of the tower crane, and the swing sliding column 21 in the sliding groove 131 drives the step-changing frame 1 to move inwards, so that the clamping section 114 of the step-changing frame 1 is hung into the step 7 on the standard section.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A tower crane step change apparatus, characterized in that the tower crane step change apparatus comprises:
the step-changing frame (1) comprises two supporting arms (11) and a connecting cross beam (12) for connecting the two supporting arms (11), wherein the upper ends of the two supporting arms (11) are hinged on an upper straight web member (61) of the climbing frame (6), and the lower ends of the two supporting arms are respectively provided with a clamping opening (111) corresponding to a step (7) on a standard section of the tower crane;
the upper end of the step-changing swing rod (2) is hinged to the upper straight web member (61) and is used for pushing or pulling the connecting cross beam (12) under the condition that force is applied to the lower end, so that the two supporting arms (11) of the step-changing frame (1) are hung in or separated from the stepping (7).
2. The step-changing device of the tower crane according to claim 1, wherein a swing sliding column (21) is arranged on the step-changing swing rod (2), a clamping plate (13) is arranged on the inner side of the connecting beam (12) in an extending mode, and a sliding groove (131) for enabling the swing sliding column (21) to swing and slide is formed in the clamping plate (13).
3. The step-changing device of the tower crane according to claim 2, wherein the number of the clamping plates (13) is two, the clamping plates are oppositely arranged at intervals on the inner side of the connecting cross beam (12), the step-changing swinging rod (2) is arranged between the two clamping plates (13), and swinging sliding columns (21) penetrating through sliding grooves (131) of the two clamping plates (13) in a one-to-one correspondence manner are arranged on two opposite sides.
4. The tower crane step-change device according to claim 2, wherein the slip groove (131) is vertically extending and has an upper end opening or a lower end opening.
5. The step-changing device of the tower crane according to claim 1, further comprising a connecting seat (3) arranged on a lower straight web member (62) of the climbing frame (6), wherein the lower end of the step-changing swing rod (2) is detachably connected to the connecting seat (3).
6. The step-changing device of the tower crane according to claim 5, wherein the connecting seat (3) comprises two connecting lug plates which are arranged at opposite intervals, and the step-changing swinging rod (2) is arranged between the two connecting lug plates and is detachably connected in series through a bolt (4).
7. The tower machine step-changing device according to claim 6, characterized in that the bolt (4) is adapted to be connected with the lower straight web member (62) by means of a link (5).
8. The tower crane step-change device according to any of the claims 1 to 7, characterized in that the inside of the connecting cross beam (12) is further provided with an abutment block (121) protruding for abutment with the main chord (63) of the climbing frame (6).
9. The tower crane step change device according to any of the claims 1 to 7, characterized in that the support arm (11) comprises an arm body and a connecting rod (112), the connecting rod (112) protrudes from the inner side of the connecting beam (12), the arm body comprises a hinge section (113) which is inclined inwards from top to bottom and a clamping section (114) which is arranged to extend vertically from the lower end of the hinge section (113), the junction of the hinge section (113) and the clamping section (114) is connected with the end of the connecting rod (112) away from the connecting beam (12), the hinge section (113) is used for hinging with the upper straight web member (61) of the climbing frame (6), and the lower end of the clamping section (114) forms the clamping opening (111).
10. A tower crane, characterized in that it comprises a tower crane step change device according to any one of claims 1 to 9.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310587237.3A CN116853964A (en) | 2023-05-23 | 2023-05-23 | Tower crane step changing device and tower crane |
| EP24810295.6A EP4707218A1 (en) | 2023-05-23 | 2024-05-16 | Tower crane step-changing device and tower crane |
| PCT/CN2024/093641 WO2024240048A1 (en) | 2023-05-23 | 2024-05-16 | Tower crane step-changing device and tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310587237.3A CN116853964A (en) | 2023-05-23 | 2023-05-23 | Tower crane step changing device and tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116853964A true CN116853964A (en) | 2023-10-10 |
Family
ID=88229259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310587237.3A Pending CN116853964A (en) | 2023-05-23 | 2023-05-23 | Tower crane step changing device and tower crane |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4707218A1 (en) |
| CN (1) | CN116853964A (en) |
| WO (1) | WO2024240048A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024240048A1 (en) * | 2023-05-23 | 2024-11-28 | 中联重科建筑起重机械有限责任公司 | Tower crane step-changing device and tower crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205488460U (en) * | 2016-01-04 | 2016-08-17 | 深圳市顶一精密五金有限公司 | A short-wave antenna column system with lifting function |
| CN114701956A (en) * | 2022-01-13 | 2022-07-05 | 中联重科建筑起重机械有限责任公司 | Climbing system and tower crane for tower crane |
| CN115784042A (en) * | 2022-09-27 | 2023-03-14 | 中联重科股份有限公司 | Climbing system for tower crane and tower crane |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201785145U (en) * | 2010-09-08 | 2011-04-06 | 长沙中联重工科技发展股份有限公司 | Operating device of step-changing hanging plate |
| CN103640995B (en) * | 2013-12-17 | 2015-08-19 | 中联重科股份有限公司 | Jacking step changing device of internal climbing tower crane and internal climbing tower crane |
| KR102045221B1 (en) * | 2019-07-30 | 2019-11-15 | 에이원커뮤니케이션즈코리아(주) | Telescoping case and lifting method of tower crane using the same |
| CN218620009U (en) * | 2022-11-21 | 2023-03-14 | 湖南三一塔式起重机械有限公司 | Climbing structure and hoisting equipment |
| CN116853964A (en) * | 2023-05-23 | 2023-10-10 | 中联重科股份有限公司 | Tower crane step changing device and tower crane |
-
2023
- 2023-05-23 CN CN202310587237.3A patent/CN116853964A/en active Pending
-
2024
- 2024-05-16 EP EP24810295.6A patent/EP4707218A1/en active Pending
- 2024-05-16 WO PCT/CN2024/093641 patent/WO2024240048A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205488460U (en) * | 2016-01-04 | 2016-08-17 | 深圳市顶一精密五金有限公司 | A short-wave antenna column system with lifting function |
| CN114701956A (en) * | 2022-01-13 | 2022-07-05 | 中联重科建筑起重机械有限责任公司 | Climbing system and tower crane for tower crane |
| CN115784042A (en) * | 2022-09-27 | 2023-03-14 | 中联重科股份有限公司 | Climbing system for tower crane and tower crane |
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| Title |
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| 上海教育局: "《物理学》", 31 August 1958, 上海教育出版社, pages: 50 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024240048A1 (en) * | 2023-05-23 | 2024-11-28 | 中联重科建筑起重机械有限责任公司 | Tower crane step-changing device and tower crane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024240048A1 (en) | 2024-11-28 |
| EP4707218A1 (en) | 2026-03-11 |
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