Tower crane climbing frame jacking cross beam anti-falling device

Abstract

The utility model discloses a tower crane climbing frame jacking cross beam anti-disengaging device which comprises tooth plates formed on the two sides of a jacking cross beam, the two tooth plates are clamped in a lifting clamping groove of a standard knot, the middle of the top face of the jacking cross beam is rotationally connected to the output end of a jacking oil cylinder, and the two tooth plates are each rotationally provided with a locking plate. The locking plate is clamped into a step clamping groove of the standard knot, and the first pin shaft penetrates through a fixing plate formed on the tooth plate. The anti-falling device can conveniently and reliably realize the function of preventing the jacking cross beam from automatically falling from the tower body support when the tower crane is in section adding and section lowering operation, is simple in structure, convenient to use and ideal in anti-falling effect, and can realize lifting of the jacking cross beam after section lifting is finished.

Description

TECHNICAL FIELD

[0001] The application relates to a tower crane, in particular to a tower crane climbing frame jacking beam anti-falling device. BACKGROUND

[0002] In GB5144 Tower Crane Safety Regulations, it is stipulated that the self-elevating tower crane should have the function of preventing the jacking beam from falling off from the tower body support during normal jacking and descending operation. The jacking and descending process of the self-elevating tower crane is a very critical safety link, and once the jacking beam falls off from the tower body support during jacking and descending operation, the tower crane will be overturned. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a tower crane climbing frame jacking beam anti-falling device to ensure that the jacking beam cannot fall off during descending and jacking and can be lifted and lowered after the descending and jacking are completed.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] The application discloses a tower crane climbing frame jacking beam anti-falling device, which comprises tooth plates formed on both sides of a jacking beam, the tooth plates are clamped in lifting clamping grooves of standard sections, the top surface of the jacking beam is rotationally connected to the output end of a jacking oil cylinder in the middle, a locking plate is rotationally arranged on each of the tooth plates, the locking plate is clamped into a step clamping groove of the standard section, and a first pin shaft is arranged to pass through a fixed plate formed in the tooth plate.

[0006] When the tower crane is jacked or descended, the locking plate is clamped into the step clamping groove of the standard section, the first pin shaft passes through the pin hole in the locking plate at the same time, the locking plate is kept fixed, and thus the jacking beam is stable.

[0007] After the jacking or descending of the tower crane is completed, the first pin shaft is pulled out, the locking plate is pulled out of the step clamping groove of the standard section, the first pin shaft is inserted into the fixed plate, the bottom of the locking plate is supported on the first pin shaft, and the jacking beam is lifted and lowered through the jacking oil cylinder.

[0008] Preferably, in the tower crane climbing frame jacking beam anti-falling device, the tail end of the first pin shaft is provided with a lock chain, and the lock chain is fixed to the tooth plate.

[0009] Preferably, in the tower crane climbing frame jacking beam anti-falling device, the top of the locking plate is rotationally installed on the fixed plate through a positioning pin and a stop ring.

[0010] Preferably, in the tower climbing frame jacking cross beam anti-falling device, the end of the locking plate away from the step clamping groove is welded with an L-shaped rod, and the L-shaped rod blocks the side of the fixed plate.

[0011] Preferably, in the tower climbing frame jacking cross beam anti-falling device, the top of the toothed plate is formed with a transition plate facilitating sliding.

[0012] Compared with the prior art, the technical scheme has the advantages that the tower climbing frame jacking cross beam anti-falling device can conveniently and reliably prevent the jacking cross beam from falling out of the tower body support during the adding and reducing of the tower climbing frame, has a simple structure, is convenient to use, has ideal anti-falling effect, and can realize the lifting of the jacking cross beam after the adding and reducing of the tower climbing frame is completed. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical schemes in the embodiments or prior art of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0014] Figure 1 Fig. 1 is a perspective view of a tower climbing frame jacking cross beam anti-falling device according to an embodiment of the present application;

[0015] Figure 2 Fig. 2 is a perspective view of the tower climbing frame jacking cross beam anti-falling device from another angle according to an embodiment of the present application;

[0016] Figure 3 Fig. 3 is a use diagram of the tower climbing frame jacking cross beam anti-falling device according to an embodiment of the present application;

[0017] Figure 4 Fig. 4 is a use side view diagram of the tower climbing frame jacking cross beam anti-falling device according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical schemes in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application, and obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] In combination with Figures 1-4As shown, the tower climbing frame jacking beam anti-falling device, including formed in the jacking beam 100 both sides of the tooth plate 101, two tooth plate 101 is engaged in the lifting clamping groove 201 of the standard section 200, the top surface of the jacking beam 100 middle part is rotatably connected to the output end 300 of the jacking oil cylinder, two tooth plate 101 is rotatably provided with a locking plate 102, the locking plate 102 is clamped into the step clamping groove 202 of the standard section 200, further comprising a first pin shaft 103, the first pin shaft 103 passes through the fixed plate 104 formed in the tooth plate 101,

[0020] When the tower adds section / drops section, the locking plate 102 is clamped into the step clamping groove 202 of the standard section 200, the first pin shaft 103 is simultaneously inserted into the pin hole 105 on the locking plate 102, and the locking plate 102 is fixed, so as to ensure the stability of the jacking beam 100;

[0021] After the tower adds section / drops section, the first pin shaft 103 is pulled out, the locking plate 102 is pulled out of the step clamping groove 202 of the standard section 200, the first pin shaft 103 is inserted into the fixed plate 104, and the bottom of the locking plate 102 is supported on the first pin shaft 103, and the jacking beam 100 is lifted by the jacking oil cylinder.

[0022] In this embodiment, by setting the locking plate, when the section needs to be lifted, the stability of the jacking beam needs to be maintained, at this time, the locking plate is clamped into the step clamping groove on the standard section, and the first pin shaft is locked to ensure that the jacking oil cylinder output is stable;

[0023] After the lifting section is completed, the locking plate is pulled out, and the jacking beam can be lifted by the jacking oil cylinder after the locking plate is pulled out.

[0024] That is, the function of preventing the tower from being lifted from the tower body support during the section adding and section dropping operation can be conveniently and reliably realized, the structure is simple, the use is convenient, the anti-falling effect is ideal, and the jacking beam can be lifted after the section lifting is completed.

[0025] Further, the tail end of the first pin shaft 103 is provided with a lock chain 106, and the lock chain 106 is fixed to the tooth plate 101.

[0026] In this embodiment, the first pin shaft is prevented from being lost.

[0027] Further, the locking plate 102 is rotatably installed on the fixed plate 104 through the positioning pin 107 and the blocking ring 108.

[0028] In this embodiment, the rotation of the locking plate is realized and ensured to be firm.

[0029] Further, the end of the locking plate 102 away from the step clamping groove 202 is welded with an L-shaped rod 109, and the L-shaped rod 109 blocks the side surface of the fixed plate 104.

[0030] In this embodiment, the locking plate can be prevented from being excessively inserted into the step slot, and when the locking plate needs to be pulled out, the L-shaped rod can function as a handle.

[0031] Further, the top of the toothed plate 101 is formed with a transition plate 110 for facilitating sliding.

[0032] In this embodiment, the toothed plate 101 is convenient to move in the lifting slot.

[0033] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0034] The above description is merely one specific implementation of the application. It should be noted that, for one of ordinary skill in the art, without departing from the principles of the application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as falling within the scope of the application.

Claims

1. A device for preventing the lifting beam of a tower crane climbing frame from detaching, characterized in that, The system includes toothed plates formed on both sides of the lifting beam, which engage in the lifting slots of the standard section. The top surface of the lifting beam is rotatably connected to the output end of the lifting cylinder. Each of the toothed plates is rotatably provided with a locking plate, which engages in the step slot of the standard section. The system also includes a first pin, which passes through a fixing plate formed on the toothed plates. When adding or lowering sections of the tower crane, the locking plate is engaged in the step slot of the standard section, and the first pin passes through the pin hole on the locking plate at the same time to keep the locking plate fixed, thereby ensuring the stability of the lifting beam. After the tower crane is added to or lowered, the first pin is pulled out, the locking plate is pulled out of the step slot of the standard section, the first pin is inserted into the fixing plate, and the bottom of the locking plate is supported by the first pin. The lifting beam is raised and lowered by the lifting cylinder.

2. The anti-detachment device for the tower crane climbing frame lifting beam according to claim 1, characterized in that, The tail end of the first pin is provided with a chain, which is fixed to the tooth plate.

3. The anti-detachment device for the tower crane climbing frame lifting beam according to claim 1, characterized in that, The top of the locking plate is rotatably mounted to the fixing plate via a positioning pin and a retaining ring.

4. The anti-detachment device for the tower crane climbing frame lifting beam according to claim 1, characterized in that, An L-shaped rod is welded to one end of the locking plate away from the step slot, and the L-shaped rod blocks the side of the fixing plate.

5. The anti-detachment device for the tower crane climbing frame lifting beam according to claim 1, characterized in that, The top of the toothed plate has a transition plate that facilitates sliding.

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