A pinning mechanism for tower crane lifting

Abstract

The present invention discloses a pinning mechanism for the jacking of a tower crane, comprising a jacking sleeve and a pinning mechanism, wherein the pinning mechanism comprises a pinning frame sleeved on the periphery of the jacking sleeve and four groups of pinning components respectively arranged at four corner positions of the pinning frame, the pinning frame sleeved on the periphery of the jacking sleeve, each group of the pinning components comprises two pinning cylinders respectively fixed on two frame frames at the corner positions and used for pushing standard joint pins, two clamping seats respectively fixed on the two frame frames at the corner positions and an arc-shaped clamping plate, wherein the two ends of the arc-shaped clamping plate are respectively detachably connected to the two clamping seats; the pinning mechanism has the characteristics of high efficiency, stability and safety.

Description

Technical Field

[0001] The invention relates to the technical field of tower crane structures, in particular to a pinning mechanism used for lifting a tower crane. Background Art

[0002] In the existing tower crane structure, the tower crane is assembled by multiple standard sections through standard section pins. The installation and disassembly of traditional standard section pins are performed by manually standing on the jacking sleeve and hammering the standard section pins for installation and connection. This kind of high-altitude operation has limited operating time and the hammering process requires great attention. Safety accidents may occur if you are not careful. Secondly, the manual hammering method is time-consuming and labor-intensive, and the assembly efficiency is limited, which is not conducive to efficient production and construction. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a reliable, stable and efficient pinning mechanism for tower crane jacking.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a pinning mechanism for tower crane jacking, including a jacking frame and a pinning mechanism, the pinning mechanism includes a pinning frame sleeved on the periphery of the jacking frame and four groups of pinning components respectively arranged at the four corner positions of the pinning frame, the pinning frame is sleeved on the periphery of the jacking frame, each group of the pinning components includes two pinning cylinders respectively fixed on two frame frames at the corner positions and used for pushing standard section pins, two holders respectively fixed on two frame frames at the corner positions and an arc-shaped holder, wherein the two ends of the arc-shaped holder are respectively detachably connected to the two holders.

[0005] Furthermore, the lifting sleeve is formed with a plurality of horizontally extending support blocks, each of which is provided with a support screw that can be adjusted vertically, and the bottom of the support pinning frame is supported by the support screw.

[0006] Furthermore, each corner position of the pinning frame is provided with a detachable corner positioning piece and a side positioning piece, one end of the corner positioning piece is formed with a positioning groove that cooperates with the corner of the side column of the jacking sleeve; the side surface of the side positioning piece cooperates with the side surface of the side column of the jacking sleeve.

[0007] Furthermore, the pinning frame is formed by splicing a long half frame and a short half frame.

[0008] Furthermore, each of the pinning cylinders is equipped with a detachable axle support, wherein the axle support is formed with a guide slideway for sliding a standard joint pin and the telescopic end of the pinning cylinder through, and the circumferential surface of the axle support is provided with an embedding groove which is connected to the guide slideway and is used to embed the standard joint pin.

[0009] Furthermore, a rotatable supporting card plate is arranged on the two side frames at each corner position of the pinning frame, wherein each supporting card plate is formed with a card slot for engaging with the side column of the standard section, and the two supporting card plates at the same corner position are respectively engaged with the two sides of the side column of the standard section.

[0010] The present invention adopts the above-mentioned scheme, and its beneficial effects are: the pinning components are respectively arranged at the four corners of the pinning frame, and each pinning cylinder is used to push the standard section pin for assembly operation. At the same time, the balance force arm composed of the arc-shaped clamping plate and the two clamping seats can effectively ensure the stability and reliability during pushing; the pinning mechanism has the characteristics of high efficiency, stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a side view of the tower crane structure.

[0012] Figure 2 Schematic diagram of the pinning mechanism.

[0013] Figure 3 for Figure 1 Enlarged view of local A in the figure.

[0014] Figure 4 Schematic diagram of the pinning mechanism when the arc-shaped pallet is not connected.

[0015] Figure 5 Schematic diagram of the pinning mechanism when the arc-shaped pallet is connected.

[0016] Figure 6 This is a schematic diagram of the pinning mechanism in use.

[0017] Figure 7 It is a cross-sectional view of the pinning cylinder and the shaft support.

[0018] Among them, 1-lifting sleeve, 2-standard section, 3-pin driving mechanism, 31-pin driving frame, 311-long half frame, 312-short half frame, 32-pin driving assembly, 321-pin driving cylinder, 322-holder, 323-arc-shaped holder, 331-corner positioning piece, 332-side positioning piece, 34-shaft support, 341-guide slide, 342-embedded groove. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention is described more fully below with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0020] See attached Figures 1 to 7As shown, in this embodiment, a pinning mechanism for tower crane jacking includes a jacking sleeve 1 and a pinning mechanism 3, wherein the existing jacking sleeve 1 is arranged on the periphery of the standard section 2, and the standard section pin is pushed into the standard section hole through the pinning mechanism 3, thereby realizing the connection of two standard sections 2 stacked up and down.

[0021] In this embodiment, the pinning mechanism 3 includes a pinning frame 31 and four groups of pinning components 32 respectively arranged at the four corners of the pinning frame 31. The pinning frame 31 of this embodiment is formed by splicing a long half frame 311 and a short half frame 312. Specifically, both ends of the long half frame 311 and the short half frame 312 are provided with connecting ears. The connecting ears of the long half frame 311 and the connecting ears of the short half frame 312 are spliced ​​by bolts to obtain a square pinning frame 31. During actual installation, the long half frame 311 and the short half frame 312 are firstly sleeved on the periphery of the lifting frame 1, and then assembled and combined, so that the pinning frame 31 is sleeved on the periphery of the lifting frame 1. Secondly, the lifting frame 1 is formed with a plurality of horizontally extending support blocks (preferably, four support blocks are respectively arranged at the four corners of the lifting frame 1), and each support block is provided with a support screw that can be adjusted vertically, and the support screw touches the bottom of the support pinning frame 31. The function of fine-tuning the position of the pinning frame 31 is achieved by respectively rotating and lifting the support screws on each support block.

[0022] In this embodiment, each group of pinning components 32 includes two pinning cylinders 321 respectively fixed on two frames at the corner positions, two clamping seats 322 respectively fixed on two frames at the corner positions, and an arc clamping plate 323, wherein the two pinning cylinders 321 of the same group of pinning components 32 are arranged vertically and the telescopic ends of the two pinning cylinders 321 are staggered in the vertical direction. Each pinning cylinder 321 is equipped with a detachable shaft support 34, wherein the end of the shaft support 34 is screwed and connected to the end face of the pinning cylinder 321 by screwing. The shaft support 34 is formed with a guide slide 341 for the standard section pin and the telescopic end of the pinning cylinder 321 to slide through, that is, the shaft support 34 is first sleeved on the telescopic end of the pinning cylinder 321, and then the shaft support 34 is screwed and fixed on the end face of the pinning cylinder 321, which has the characteristics of easy disassembly and assembly. The peripheral surface of the shaft support 34 is provided with an embedding groove 342 which is communicated with the guide slide 341 and is used to embed the standard joint pin. Thus, the standard joint pin embedded in the embedding groove 342 is pushed by the pinning cylinder 321 in the guide slide and extended into the standard joint hole.

[0023] In this embodiment, the two ends of the arc-shaped clamping plate 323 are detachably connected to the two clamping seats 322 by bolts, wherein, in order to facilitate the actual assembly operation, one end of the arc-shaped clamping plate 323 can be hinged to one of the clamping seats 322 by a fixed bolt, and the other end is movably connected to the other clamping seat 322 by an easily detachable bolt. During installation, after the pinning frame 31 is sleeved on the jacking frame 1, the arc-shaped clamping grooves of each group of pinning components 32 are connected to the two clamping seats 322, so that the arc-shaped clamping plate 323 and the two clamping seats 322 form a force arm for balanced support, and the force arm is used to balance the reverse impact force generated by the pinning cylinder 321 on the pinning frame 31 when pushing the standard node hole, thereby reducing the deformation of the pinning frame 31 during the pushing of the standard node hole and improving stability.

[0024] In this embodiment, each corner position of the pinning frame 31 is provided with a detachable corner positioning piece 331 and a side positioning piece 332, wherein one end of the corner positioning piece 331 is formed with a positioning groove that is in conflict with the corner position of the side column of the jacking frame 1. The positioning groove of this embodiment is in the shape of a right-angle groove that matches the corner position of the side column. The four corner positioning pieces 331 are respectively in conflict with the corner position of the side column of the jacking frame 1 at the four corner positions, thereby playing a positioning function. The side surface of the side positioning piece 332 is in conflict with the side surface of the side column of the jacking frame 1. At this time, the side positioning piece 332 and the side surface of the side column of the jacking frame 1 can be reinforced by bolts, thereby positioning and reinforcing the connection between the pinning frame 31 and the jacking frame 1.

[0025] In this embodiment, the support screws of each support block are used to adjust the position of the pinning frame 31 vertically or at an angle, and the angular positioning pieces 331 and the side positioning pieces 332 are used to position the pinning frame 31, so that the telescopic ends of each pinning cylinder 321 are aligned with the corresponding standard node holes, so as to facilitate pushing the standard node pins into the standard node holes. Secondly, the length specification of the shaft support 34 of this embodiment can be determined according to the actual spacing between the end face of the pinning cylinder 321 and the standard node hole. According to the spacing, the shaft support 34 adopts a corresponding length specification.

[0026] In this embodiment, a rotatable supporting card plate 35 is provided on the two side frames at each corner position of the pinning frame 31, wherein each of the supporting card plates 35 is formed with a card slot that is engaged with the side column of the standard section 2, and the two supporting card plates 35 at the same corner position are respectively engaged with the two sides of the side column of the standard section 2. Therefore, in actual users, each supporting card plate 35 can be rotated in turn to make the card slot of each supporting card plate 35 engage with the corresponding side column of the standard section 2, so as to facilitate the pinning operation in the pinning mechanism 3, and can further balance the impact force of the pinning structure 3 on the standard section.

[0027] In order to facilitate the understanding of the above-mentioned knocking mechanism 3, further explanation is given below in combination with the specific usage method.

[0028] During installation, step A1. The long half frame 311 and the short half frame 312 are respectively sleeved on the lifting frame 1 and then spliced ​​and assembled to form a pinning frame 31, and the support screws of each support block touch the bottom of the pinning frame 31;

[0029] Step A2. Adjust the positioning and position of the pinning frame 31 by screwing and adjusting each support screw and adjusting the angular positioning piece 331 and the side positioning piece 332, so that the telescopic end of each pinning cylinder 321 is aligned with the corresponding standard node hole;

[0030] Step A3. By screwing each shaft support 34 onto each pinning cylinder 321, and connecting the arc-shaped card plate 323 with the two card seats 322;

[0031] Step A4. Put the standard joint pin into each shaft support 34, and push the standard joint pin into the standard joint hole by the pinning cylinder 321. After completion, the telescopic end of each pinning cylinder 321 retracts and resets.

[0032] The above-mentioned method of use is more convenient for high-altitude operation and has the characteristics of easy adjustment, good precision and good versatility.

[0033] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the art who, without departing from the scope of the technical solution of the present invention, makes more possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or modifications are all equivalent embodiments of the present invention. Therefore, any equivalent and equivalent changes made according to the ideas of the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A pinning mechanism for tower crane lifting, characterized in that: The invention comprises a lifting frame (1) and a pinning mechanism (3), wherein the pinning mechanism (3) comprises a pinning frame (31) sleeved on the outer periphery of the lifting frame (1) and four groups of pinning components (32) respectively arranged at four corner positions of the pinning frame (31), wherein the pinning frame (31) is sleeved on the outer periphery of the lifting frame (1), and each group of the pinning components (32) comprises two pinning cylinders (321) respectively fixed on two frame frames at the corner positions and used for pushing standard joint pins, two clamping seats (322) respectively fixed on two frame frames at the corner positions, and an arc clamping plate (323), wherein the two ends of the arc clamping plate (323) are respectively detachably connected to the two clamping seats (322).

2. A pinning mechanism for tower crane lifting according to claim 1, characterized in that: The lifting sleeve (1) is formed with a plurality of horizontally extending support blocks, each of which is provided with a support screw that can be adjusted vertically, and the support screw contacts the bottom of the support pinning frame (31).

3. A pinning mechanism for tower crane lifting according to claim 1, characterized in that: Each corner position of the pinning frame (31) is provided with a detachable corner positioning piece (331) and a side positioning piece (332); one end of the corner positioning piece (331) is formed with a positioning groove that abuts against the corner of the side column of the jacking frame (1); and the side surface of the side positioning piece (332) abuts against the side surface of the side column of the jacking frame (1).

4. A pinning mechanism for tower crane lifting according to claim 1, characterized in that: The pinning frame (31) is formed by splicing a long half frame (311) and a short half frame (312).

5. The pinning mechanism for tower crane lifting according to claim 1 is characterized in that: Each of the pinning cylinders (321) is provided with a detachable shaft support (34), wherein the shaft support (34) is formed with a guide slideway (341) for a standard joint pin and the telescopic end of the pinning cylinder (321) to slide through, and a peripheral surface of the shaft support (34) is provided with an embedding groove (342) which is in communication with the guide slideway (341) and is used to embed the standard joint pin.

6. The pinning mechanism for tower crane lifting according to claim 1, characterized in that: A rotatable supporting card plate (35) is provided on the two side frames at each corner position of the pinning frame (31), wherein each supporting card plate (35) is formed with a card slot for engaging with the side column of the standard section (2), and the two supporting card plates (35) at the same corner position are respectively engaged with the two sides of the side column of the standard section (2).

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