CN212924196U - A hang boots anticreep connection structure that marks time for tower crane and jacking frame thereof - Google Patents

Abstract

The utility model discloses a hanging boot stepping anti-drop connecting structure for a tower crane and a jacking frame thereof, which are used in the building construction occasion, the anti-drop connecting structure comprises a stepping, a hanging boot hung on the stepping and an anti-drop mechanism, the anti-drop mechanism comprises a telescopic component and a rotating component, the telescopic component is fixed on the hanging boot, and the telescopic end is positioned at the lower side of the stepping; the rotating assembly comprises a connecting arm rotatably connected to the hanging boot and a limiting rod connected to one end of the connecting arm; the connecting arm is rotated to enable the limiting rod to be switched between the anti-falling position and the splitting position, and when the limiting rod is located at the anti-falling position, the connecting arm is in contact with the telescopic end of the telescopic assembly. In the utility model, the steps of controlling the anti-dropping and releasing between the step and the hanging boot are simple, and the operation is convenient; utilize the linear motion mode of flexible subassembly to carry out the gag lever post and switch between anticreep position and split position, not only processing is convenient, tolerance nature is big, and the structural position is stable.

Description

A hang boots anticreep connection structure that marks time for tower crane and jacking frame thereof

Technical Field

The utility model relates to a construction equipment technical field, concretely relates to an anticreep connection structure of marking time of hanging boots for tower crane and jacking frame thereof.

Background

The tower crane is the most common hoisting equipment on the construction site, also called tower crane, and is formed by connecting standard sections one by one. The tower crane is mainly used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction. The suspended ceiling has the function of bearing the upper load transmitted by the boom pull rope and the balance arm pull rope, and is directly transmitted to the tower body structure through the rotary tower, the rotary table, the bearing seat and other structural components.

In the use process of the tower crane, the jacking safety is the most main ring of the safety of the tower crane, before the jacking operation is started, the step-changing hanging shoes on the jacking cross beam need to be hung on the steps arranged on the standard section of the tower crane, and the hanging shoes and related components and actions and the like are supported through the steps, so that reliable support is provided for the jacking operation. In order to promote the stability of cooperation between the hanging boot and marking time, need carry on spacingly in order to avoid hanging boot to break away from and mark time, reduce jacking safety to the hanging boot.

In the existing tower crane, as shown in fig. 1, a step 1 is fixed on a standard knot 4, a hanging shoe 2 is hung on the step 1, and an anti-falling bolt 3 is mainly used for penetrating through the step 1 and the hanging shoe 2 to prevent the hanging shoe 2 from being separated from the step 1. This approach has the following problems: when the anti-drop bolt is in a stressed state, the anti-drop bolt is difficult to pull out, so that time and labor are wasted in assembly and disassembly, and the operation is inconvenient; 2. when the anti-drop bolt is installed, the height of the pin holes in the pedal and the hanging boot is required to be coaxial, otherwise, when the anti-drop bolt penetrates through the pedal and the hanging boot, the resistance is high, and the installation is difficult; 3. the size of the pin hole needs to be matched with that of the bolt, otherwise the hanging shoe can shake relatively to the step due to fit clearance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a hanging boots anticreep connection structure of marking time and jacking frame for tower crane has solved

The utility model adopts the technical scheme as follows:

the anti-drop connecting structure for the hanging boot step of the tower crane comprises steps, hanging boots hung on the steps and an anti-drop mechanism for preventing the hanging boots from dropping off the steps, wherein the anti-drop mechanism comprises a telescopic assembly and a rotating assembly, the telescopic assembly is fixed on the hanging boots, and the telescopic end of the telescopic assembly is positioned at the lower side of the steps;

the rotating assembly comprises a connecting arm rotatably connected to the hanging boot and a limiting rod connected to one end of the connecting arm;

the connecting arm is rotated around the rotating connecting part between the connecting arm and the hanging boot, so that the limiting rod can be switched between an anti-falling position where the stepping and the hanging boot are prevented from being separated and a splitting position where the stepping and the hanging boot are allowed to be separated and located outside the stepping in the process of being clamped into the stepping, and only when the limiting rod is located at the anti-falling position, the connecting arm is in contact with the telescopic end of the telescopic assembly, and the rotating direction of the connecting arm to the splitting position is limited by the telescopic end of the telescopic assembly.

Furthermore, the bottom of marking time is provided with the spacing draw-in groove that supplies the gag lever post card to go into, spacing draw-in groove upwards extends around the axis of rotating the connection position between linking arm and the hanging boot from the bottom of marking time.

Furthermore, the hanging boot comprises two ear plates and a hanging plate which is positioned between the ear plates and is vertically connected with the ear plates, and a hanging hole for hanging the hanging boot on the step is arranged on the hanging plate;

the telescopic assembly is fixed on one ear plate, and the connecting arm is rotatably connected to one ear plate.

Furthermore, the telescopic assembly comprises a moving shaft and a spring, a shaft collar is arranged on the moving shaft, the moving shaft is positioned between the two lug plates, one end of the moving shaft penetrates through one lug plate, one end of the moving shaft, which penetrates through the lug plate, is sleeved with a limiting cylinder, and the limiting cylinder is in threaded connection with the moving shaft;

the spring sleeve is established on removing epaxially, and its both ends contact with axle collar and this otic placode respectively, and when the gag lever post was in the anticreep position, removed epaxial circumference lateral wall that is located the axle collar and keeps away from spring one side and the one side contact of keeping away from the link plate on the linking arm.

Further, the movable shaft is sleeved with a dustproof cylinder, one end of the dustproof cylinder is connected with the lug plate, and the shaft collar is located in the dustproof cylinder.

Furthermore, be provided with the spacer pin on the spacing section of thick bamboo, the spacer pin from last downside down running through the upside of spacing section of thick bamboo, removal axle and spacing section of thick bamboo in proper order.

Furthermore, the cross section of the moving shaft on the side, away from the spring, of the collar is rectangular, and the contact between the moving shaft and the connecting arm is surface-to-surface contact.

Further, the telescopic assemblies are two and are respectively positioned on one ear plate.

Furthermore, an auxiliary positioning block is connected to the hanging boot, and when the limiting rod is located at the anti-falling position, the connecting arm is located between the auxiliary positioning block and the telescopic end of the telescopic assembly.

A jacking frame comprises two standard sections and a jacking frame body located between the standard sections, wherein two sides of the upper end of the jacking frame body are respectively connected with the standard sections through a hanging boot step anti-falling connecting structure;

the rotating assembly comprises a connecting arm rotatably connected to the hanging boot and a limiting rod connected to one end of the connecting arm;

rotate the connection position and rotate the linking arm round between linking arm and the hanging boot, enable the gag lever post in the card go into mark time in order to prevent to mark time and hang the anticreep position that the boot breaks away from with lie in the outside of marking time and allow to mark time and hang the split position that the boot breaks away from between switch over, and have and only when the gag lever post is in the anticreep position, the linking arm contacts with the flexible end of telescopic component, and it is limited by telescopic component's flexible end to split position pivoted direction, mark time and fix on the lateral wall of standard festival, the bottom and the jacking framework of hanging boot are connected.

Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a hang boots of tower crane and mark time anticreep connection structure and jacking frame thereof, the step of controlling anticreep and release between mark time and the hang boots is simple, convenient operation; meanwhile, the limiting rod is switched between the anti-falling position and the splitting position by utilizing the linear motion mode of the telescopic assembly, so that the utility model has the advantages of convenient processing, large tolerance and stable structural position;

2. the utility model discloses a hang boots anticreep connection structure of marking time and jacking frame for tower crane can remove the spacing of flexible subassembly to the rotation of gag lever post promptly through pulling the movable shaft, and its operation is extremely simple, convenient, and pulls the movable shaft and only need overcome the deformation power of spring, and its required external force is little, has promoted high altitude use the utility model discloses a security;

3. the utility model discloses a hanging boot anti-drop connection structure of marking time and jacking frame for tower crane, when the gag lever post is in the anticreep position, the spring is in slightly compressed state to produce the pretightning force to the threaded connection position between removal axle and the spacing section of thick bamboo, prevent its laxity;

4. the utility model discloses an anti-disengaging connection structure marks time for hanging boots of tower crane and jacking frame thereof removes the epaxial cross section that lies in the axle collar and keep away from spring one side and is the rectangle, removes the contact between axle and the linking arm and for the face-to-face contact, the face-to-face contact can promote the utility model discloses be in anti-disengaging state's stability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts, and the proportional relationship of each component in the drawings in the present specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:

FIG. 1 is a schematic diagram of a prior art structure

Fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a schematic view of the construction of a suspension boot;

FIG. 4 is a schematic view of the structure of the rotating assembly;

FIG. 5 is a schematic view of the position of the telescoping assembly mounted on the suspension boot;

FIG. 6 is a cross-sectional block diagram of the telescoping assembly;

fig. 7 is a front view of the present invention;

FIG. 8 is a cross-sectional view taken along A-A in FIG. 7;

FIG. 9 is an enlarged view at A in FIG. 8;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 11 is an enlarged view at B in FIG. 10;

FIG. 12 is a schematic structural view of the stop lever in the disassembled position;

FIG. 13 is a front view of FIG. 12;

FIG. 14 is a cross-sectional view taken along line C-C of FIG. 13;

FIG. 15 is an enlarged view at C of FIG. 14;

FIG. 16 is a schematic structural view of the stepping and hanging boot in the anti-drop state;

FIG. 17 is a schematic view of the structure of the step and the suspension boot in a disassembled state.

Reference numerals in the drawings indicate:

1-step, 2-hanging boot, 3-anti-falling bolt, 4-standard knot, 5-connecting arm, 201-lug plate, 202-hanging plate, 203-hanging hole, 6-moving shaft, 7-spring, 8-shaft collar, 9-dustproof barrel, 10-limiting barrel, 11-limiting pin, 12-auxiliary positioning block, 13-jacking frame body, 14-limiting rod, 15-limiting clamping groove, 16-hinged shaft, 17-handle, 18-through hole, 19-fastening piece and 20-upper lug plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The term "connected" as used herein is intended to mean a conventional connection, such as integrally formed, welded, riveted, etc., if not specifically emphasized, and the specific connection is preferably adapted according to conventional technical knowledge in the art. All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 17.

Example 1

As shown in fig. 2 to 15, the anti-drop connection structure for hanging boot step of tower crane of the present invention comprises a step 1, a hanging boot 2 hung on the step 1, and an anti-drop mechanism for preventing the hanging boot 2 from dropping off from the step 1, wherein the anti-drop mechanism comprises a telescopic component and a rotating component, the telescopic component is fixed on the hanging boot 2, and the telescopic end is located at the lower side of the step 1;

the rotating assembly comprises a connecting arm 5 which is rotatably connected to the hanging boot 2 and a limiting rod 14 which is connected to one end of the connecting arm 5;

the connecting arm 5 is rotated around the rotating connecting part between the connecting arm 5 and the hanging shoe 2, so that the limiting rod 14 can be switched between an anti-falling position where the stepping 1 and the hanging shoe 2 are prevented from being separated and a splitting position where the stepping 1 and the hanging shoe 2 are allowed to be separated outside the stepping 1 when being clamped into the stepping 1, and only when the limiting rod 14 is located at the anti-falling position, the connecting arm 5 is contacted with the telescopic end of the telescopic assembly, and the rotating direction of the connecting arm to the splitting position is limited by the telescopic end of the telescopic assembly.

The retaining position is the position shown in fig. 7 to 11 and 16; the detached position is as shown in fig. 12 to 15 and fig. 17.

Furthermore, a limiting clamping groove 15 for clamping a limiting rod 14 is arranged at the bottom of the step 1, and the limiting clamping groove 15 extends upwards from the bottom of the step 1 around the axis of the rotary connection part between the connecting arm 5 and the hanging shoe 2.

Further, the hanging boot 2 comprises two ear plates 201 and a hanging plate 202 which is positioned between the ear plates 201 and is vertically connected with the ear plates 201, and a hanging hole 203 for hanging the hanging boot 2 on the step 1 is arranged on the hanging plate 202;

the telescopic assembly is fixed on an ear plate 201, and the connecting arm 5 is rotatably connected on one ear plate 201.

The telescopic assembly can adopt a pneumatic rod, a screw rod mechanism, a connecting rod mechanism, a gear rack and the like, and the specific implementation mode is not limited.

When the hanging boot 2 needs to be released, the telescopic assembly is firstly operated to enable the telescopic end of the telescopic assembly to retract, so that the connecting arm 5 is abducted, the connecting arm 5 can smoothly rotate to the splitting position, specifically to the position shown in fig. 15 and 17, the hanging boot 2 and the stepping 1 are only connected in a hanging mode, and the hanging boot 2 can be taken down from the stepping 1 by lifting up.

When the release state is changed into the anti-drop state, the telescopic assembly is firstly controlled to enable the telescopic end of the telescopic assembly to retract, so that the stepping and connecting arm 5 can smoothly rotate, and the connecting arm 5 can rotate to the anti-drop position, and particularly rotates to the position shown in fig. 9 and fig. 16, the hanging shoe 2 is connected with the mark time 1 in a hanging mode, the hanging shoe 2 is further clamped on the mark time 1 in a lever mode through the limiting rod 14 and the telescopic assembly, and the hanging shoe 2 is prevented from being separated from the mark time 1.

The anti-drop connecting structure for the hanging boot step has simple steps of controlling the anti-drop and the release between the step 1 and the hanging boot 2, and convenient operation; simultaneously, utilize the linear motion mode of flexible subassembly to carry out gag lever post 14 and switch between anticreep position and split position, not only make the utility model discloses processing is convenient, and tolerance nature is big, and structural position is stable.

Example 2

In this embodiment, a specific embodiment of the telescopic assembly is described based on embodiment 1.

As shown in fig. 2 to 15, in the present invention, the telescopic assembly includes a moving shaft 6 and a spring 7, a shaft collar 8 is disposed on the moving shaft 6, the moving shaft 6 is located between two ear plates 201, and one end of the moving shaft 6 penetrates through one ear plate 201, and a limiting cylinder 10 is sleeved on one end of the moving shaft 6 penetrating through the ear plate 201, the limiting cylinder 10 is in threaded connection with the moving shaft 6, preferably, the end of the limiting cylinder 10 contacts with the ear plate 201;

the spring 7 is sleeved on the moving shaft 6, two ends of the spring are respectively contacted with the shaft collar 8 and the lug plate 201, and when the limiting rod 14 is located at the anti-falling position, the circumferential side wall of the moving shaft 6, which is located at one side of the shaft collar 8, far away from the spring 7 is contacted with one side, far away from the hanging plate 202, of the connecting arm 5.

Preferably, when the limiting rod 14 is in the anti-dropping position, the spring 7 is in a slightly compressed state, so that a pretightening force is generated on the threaded connection part between the moving shaft 6 and the limiting cylinder 10 to prevent the loosening of the pretightening force.

Further, there are two telescoping assemblies, each on one of the ear plates 201.

Further, a dustproof cylinder 9 is sleeved on the movable shaft 6, one end of the dustproof cylinder 9 is connected with the ear plate 201, and the shaft collar 8 is located in the dustproof cylinder 9.

Further, the cross section that lies in axle collar 8 on the removal axle 6 and keep away from spring 7 one side is the rectangle, and the contact that removes between axle 6 and the linking arm 5 is face-to-face contact, and face-to-face contact can promote the utility model discloses be in the stability of anticreep state.

When the hanging boot 2 needs to be released, the telescopic assembly is firstly operated: the moving shaft 6 is directly pulled to enable the telescopic end of the moving shaft to retract, namely, the part, contacted with the connecting arm 5, on the moving shaft 6 moves towards the limiting cylinder 1 until the moving shaft 6 is not contacted with the connecting arm, so that the moving shaft is abducted with the connecting arm 5, the connecting arm 5 can smoothly rotate towards the splitting position, specifically, the position shown in fig. 15 is rotated, and at the moment, the spring 7 is in a compressed state; the hanging boots 2 are only hung and connected with the steps 1, and the hanging boots 2 can be taken down from the steps 1 by lifting. When only one worker operates, the limiting cylinder 10 can be rotated firstly, the moving shaft 6 does not rotate, so that the moving shaft 6 gradually approaches to the limiting cylinder 10 under the rotation of the limiting cylinder 10 until the moving shaft 6 is not contacted with the connecting arm, at the moment, although the spring is in a compressed state, the restoring direction of the spring is limited by the limiting cylinder 10, therefore, the moving shaft 6 is kept still in the axial direction at the moment, and then the hanging shoe 2 can be lifted up to be taken down from the step 1.

When the release state is changed into the anti-falling state, the telescopic assembly is firstly operated: the movable shaft 6 is directly pulled to enable the telescopic end of the movable shaft to retract, namely, the part, contacted with the connecting arm 5, on the movable shaft 6 moves towards the limiting cylinder 1 until the movable shaft 6 is not contacted with the connecting arm, so that the movable shaft and the connecting arm 5 are abducted, the connecting arm 5 can smoothly rotate and rotate towards the anti-falling position, and specifically rotate to the position shown in figure 9, the hanging boot 2 is connected with the mark time 1 in a hanging mode, the hanging boot 2 is further clamped on the mark time 1 in a lever mode through the limiting rod 14 and the telescopic assembly, and the hanging boot 2 is prevented from being separated from the mark time 1. When only one worker performs the operation, the limiting cylinder 10 is rotated first and the moving shaft 6 is not rotated, so that the moving shaft 6 is gradually moved toward the limiting cylinder 10 by the rotation of the limiting cylinder 10 until the moving shaft 6 is not in contact with the link arm, and the spring is compressed but its restoring direction is restricted by the limiting cylinder 10, so that the moving shaft 6 is held axially immovable at this time, and then the link arm 5 is rotated and rotated toward the anti-slip position, as well as the related operation of the release.

The utility model discloses in, can remove axle 6 through the pulling and relieve flexible subassembly promptly and spacing to the pivoted of gag lever post 14, its operation is extremely simple, convenient, and the pulling removes axle 6 and only needs overcome the deformation power of spring, and its required external force is little, has promoted the high altitude and has used the utility model discloses a security.

Furthermore, a limiting pin 11 is arranged on the limiting cylinder 10, and the limiting pin 11 sequentially penetrates through the upper side of the limiting cylinder 10, the moving shaft 6 and the lower side of the limiting cylinder 10 from top to bottom.

The restricting pin 11 can further prevent the abnormal rotation of the restricting cylinder 10. Therefore, when the limiting cylinder 10 is rotated relative to the moving shaft 6, the limiting pin 11 needs to be removed first.

Furthermore, an auxiliary positioning block 12 is connected to the hanging shoe 2, and when the limiting rod 14 is located at the anti-falling position, the connecting arm 5 is located between the auxiliary positioning block 12 and the telescopic end of the telescopic assembly. When rotating gag lever post 14 to the anticreep position, the linking arm 5 is located its and hang and rotate between boots 2 and be connected the one end at position and pass through gag lever post 14 and the contact of 15 tank bottoms of spacing draw-in grooves, and linking arm 5 is located its and hang and rotate between boots 2 the other end of being connected the position and contact with auxiliary positioning block 12 simultaneously to when reducing gag lever post 14 and rotating to target in place, to the impact of relevant parts such as gag lever post 14, improve the utility model discloses a life.

Specifically, linking arm 5 has two, is located the both ends of gag lever post 14 respectively, and one side of keeping away from gag lever post 14 between linking arm 5 is provided with handle 17, when rotating gag lever post 14, rotates linking arm 5 through handle 17, rotates gag lever post 14 then to further promoted and controlled the utility model discloses a convenience, and control more laborsavingly.

The connecting arm 5 is rotatably connected to the shoe 2 by means of a hinge shaft, in particular, the hinge shaft 16 has one end connected to the lug plate 201 and the other end inserted into the lug plate 201, and is preferably rotatably connected to the lug plate 201 by means of a bearing or a copper bush.

Example 3

A jacking frame comprises two standard sections 4 and a jacking frame body 13 positioned between the standard sections 4, wherein two sides of the upper end of the jacking frame body 13 are respectively connected with the standard sections 4 through a hanging boot step anti-falling connecting structure, the hanging boot step anti-falling connecting structure comprises a step 1, a hanging boot 2 hung on the step 1 and an anti-falling mechanism for preventing the hanging boot 2 from falling off the step 1, the anti-falling mechanism comprises a telescopic assembly and a rotating assembly, the telescopic assembly is fixed on the hanging boot 2, and the telescopic end of the telescopic assembly is positioned on the lower side of the step 1;

the rotating assembly comprises a connecting arm 5 which is rotatably connected to the hanging boot 2 and a limiting rod 14 which is connected to one end of the connecting arm 5;

rotate the connecting arm 5 round the connecting position of rotating between connecting arm 5 and hanger shoe 2, enable gag lever post 14 in the card go into step 1 in order to prevent step 1 and the anticreep position that hanger shoe 2 breaks away from with lie in step 1 outside and allow to switch between the split position that step 1 and hanger shoe 2 break away from, and have and only when gag lever post 14 is in the anticreep position, connecting arm 5 contacts with the flexible end of telescopic component, and its direction to split position pivoted is restricted by telescopic component's flexible end, step 1 and fix on the lateral wall of standard festival 4, the bottom and the jacking framework 13 of hanger shoe 2 are connected.

The hanging boot 2 is preferably detachably connected with the jacking frame body 13 through the fastener 19, specifically, a set of upper ear plates are arranged at two ends of the upper surface of the jacking frame body 13, each set of upper ear plate comprises two upper ear plates, the upper ear plates and the ear plates 201 are connected through the fastener, and the fastener can adopt pins, bolts, rivets and the like, and is particularly unlimited.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (10)

1. A anticreep connection structure that marks time of hanging boots for tower crane, including mark time (1), hang and establish hanging boots (2) on marking time (1) and prevent hanging boots (2) from the anti-disengaging mechanism who drops on marking time (1), its characterized in that: the anti-falling mechanism comprises a telescopic component and a rotating component, the telescopic component is fixed on the hanging boot (2), and the telescopic end of the telescopic component is positioned at the lower side of the step (1);

the rotating assembly comprises a connecting arm (5) rotatably connected to the hanging boot (2) and a limiting rod (14) connected to one end of the connecting arm (5);

rotate the connecting arm (5) around rotating between connecting arm (5) and hanger shoe (2) and connect position, enable gag lever post (14) in the card go into step (1) in order to prevent to step (1) and hanger shoe (2) the anticreep position that breaks away from and be located step (1) outside and allow to step (1) and hanger shoe (2) the split position that breaks away from switch over between, and only when gag lever post (14) is in the anticreep position, connecting arm (5) and telescoping assembly's flexible end contact, it is restricted in telescoping assembly's flexible end to split position pivoted direction.

2. The shoe-hanging step anti-drop connecting structure for the tower crane according to claim 1, wherein: the bottom of marking time (1) is provided with spacing draw-in groove (15) that supply gag lever post (14) card to go into, spacing draw-in groove (15) are upwards extended round the axis of rotating between linking arm (5) and the boots of hanging (2) the connection position from the bottom of marking time (1).

3. The shoe-hanging step anti-drop connecting structure for the tower crane according to claim 1, wherein: the hanging boot (2) comprises two ear plates (201) and a hanging plate (202) which is positioned between the ear plates (201) and is vertically connected with the ear plates (201), and a hanging hole (203) for hanging the hanging boot (2) on the step (1) is formed in the hanging plate (202);

the telescopic assembly is fixed on one ear plate (201), and the connecting arm (5) is rotatably connected on one ear plate (201).

4. The hanging shoe step anti-drop connecting structure for the tower crane according to claim 3, wherein: the telescopic assembly comprises a moving shaft (6) and a spring (7), a shaft collar (8) is arranged on the moving shaft (6), the moving shaft (6) is positioned between two lug plates (201), one end of the moving shaft penetrates through one lug plate (201), one end of the moving shaft (6) penetrating through one lug plate (201) is sleeved with a limiting cylinder (10), and the limiting cylinder (10) is in threaded connection with the moving shaft (6);

spring (7) cover is established on removing axle (6), and its both ends contact with axle collar (8) and this otic placode (201) respectively, and when gag lever post (14) was in the anticreep position, moved on axle (6) and lie in on axle collar (8) and keep away from the circumference lateral wall of spring (7) one side and linking arm (5) and keep away from the one side contact of link plate (202).

5. The hanging shoe step anti-drop connecting structure for the tower crane according to claim 4, wherein: remove the cover and be equipped with dust tube (9) on axle (6), the one end and the otic placode (201) of dust tube (9) are connected, and axle collar (8) are located dust tube (9).

6. The hanging shoe step anti-drop connecting structure for the tower crane according to claim 4, wherein: the limiting device is characterized in that a limiting pin (11) is arranged on the limiting cylinder (10), and the limiting pin (11) sequentially penetrates through the upper side of the limiting cylinder (10), the moving shaft (6) and the lower side of the limiting cylinder (10) from top to bottom.

7. The hanging shoe step anti-drop connecting structure for the tower crane according to claim 4, wherein: the cross section of the moving shaft (6) on the side, away from the spring (7), of the shaft collar (8) is rectangular, and the moving shaft (6) is in surface-to-surface contact with the connecting arm (5).

8. The hanging boot step anti-drop connecting structure for the tower crane according to any one of claims 3 to 7, wherein: the telescopic assemblies are two and are respectively positioned on an ear plate (201).

9. The hanging boot step anti-drop connecting structure for the tower crane according to any one of claims 1 to 7, wherein: an auxiliary positioning block (12) is connected to the hanging boot (2), and when the limiting rod (14) is located at the anti-falling position, the connecting arm (5) is located between the auxiliary positioning block (12) and the telescopic end of the telescopic assembly.

10. The utility model provides a jacking frame, includes two standard festivals (4) and is located jacking framework (13) between standard festivals (4), the both sides of jacking framework (13) upper end respectively step on anticreep connection structure through a hanging boot and be connected with standard festivals (4) respectively, its characterized in that, hanging boot step on anticreep connection structure be any one of claim 1 ~ 9 hanging boot step on anticreep connection structure, step on (1) fix on the lateral wall of standard festivals (4), the bottom and the jacking framework (13) of hanging boot (2) are connected.

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