CN113387285B - Tower crane with rotary assembly and lifting large arm - Google Patents

Abstract

A tower crane with a slewing assembly and a boom that can be raised and lowered relates to the field of tower cranes. The tower crane with a slewing assembly and a boom that can be raised and lowered comprises a tower body composed of a plurality of standard sections connected in sequence, a slewing assembly sleeved on the tower body, a lifting device for driving the slewing assembly to be raised and lowered along the tower body, a boom and a balance arm; the slewing assembly comprises an inner slewing mechanism and an outer slewing mechanism and a slewing support that rotatably connects the outer slewing mechanism to the inner slewing mechanism, the two ends of the outer slewing mechanism are respectively connected to the boom and the balance arm, the inner slewing mechanism is hinged with a flip beam frame that is detachably connected thereto, and the flip beam frame can be rotatably erected on the top of any standard section and connected to or detached from the inner slewing mechanism and the corresponding standard section. The tower crane with a slewing assembly and a boom that can be raised and lowered can safely and efficiently perform standard section addition and subtraction operations at the top of the tower body, and the slewing assembly can drive the boom and the balance arm to be raised and lowered along the tower body to meet the use requirements of different heights.

Description

A tower crane with slewing assembly and lifting arm

Technical Field

The present application relates to the field of tower cranes, and in particular to a tower crane with a slewing assembly and a liftable boom.

Background technique

Tower cranes, also known as tower cranes, are commonly used in the construction industry as vertical transportation equipment. At present, construction sites mostly use self-erecting tower cranes with addable sections to adapt to the different increased construction building heights. The slewing mechanism of the self-erecting tower crane with addable sections is fixedly connected to the standard section at the top of the tower body, resulting in the working height of the slewing mechanism being fixed to the top of the tower body as the standard section increases or decreases, and cannot be adjusted at will. At the same time, the lower part of the slewing mechanism of the existing self-erecting tower crane with added sections is generally provided with an outer frame and a lifting device. The lifting and lowering of the outer frame and the upper tower crane are realized by the extension and retraction of the lifting cylinder of the lifting device, and the standard section of the tower crane is increased or decreased at the position of the outer frame. During the process of adding and reducing sections, the weight of the equipment on the top of the tower crane is supported by the outer frame and the lifting device for a long time, which requires high standardized operation of the operator and is prone to casualties during actual operation.

Summary of the invention

The purpose of the present application is to provide a tower crane with a slewing assembly and a liftable boom, which can safely and efficiently perform standard section addition and subtraction operations on the top of the tower body, and the slewing assembly can drive the lifting arm and the balance arm to rise and fall along the tower body to meet the use requirements of different heights.

The embodiment of the present application is implemented as follows:

An embodiment of the present application provides a tower crane with a slewing assembly and a liftable boom, comprising a tower body composed of a plurality of standard sections connected in sequence, a slewing assembly mounted on the tower body, a lifting device for driving the slewing assembly to be lifted and lowered along the tower body, a boom and a balance arm; the slewing assembly comprises an inner slewing mechanism and an outer slewing mechanism mounted on the tower body, and a slewing support that connects the outer slewing mechanism to the inner slewing mechanism rotatably around a vertical axis, the two ends of the outer slewing mechanism are respectively connected to the boom and the balance arm, and also comprises a flip beam frame having one end hinged to one end of the top of the inner slewing mechanism, the other end of the flip beam frame being detachably connected to the other end of the top of the inner slewing mechanism, and the flip beam frame being configured to be rotatably erected on the top of any standard section and connected to or detached from the inner slewing mechanism and the corresponding standard section.

In some optional embodiments, two hinged columns and two connecting columns are respectively provided at the two ends of the top of the inner rotating mechanism, and the two sides of one end of the flip beam are respectively hinged to the two hinged columns, and the two sides of the other end are respectively detachably connected to the two connecting columns through fixing pins.

In some optional embodiments, the lifting device includes an upper lifting seat respectively connected to both sides of the bottom of the inner rotating mechanism and a lower lifting seat respectively located below the two upper lifting seats, at least one lifting cylinder is hinged between each upper lifting seat and the corresponding lower lifting seat, and both ends of the upper lifting seat and the lower lifting seat are respectively connected with a flip claw that can rotate along a vertical plane, and the outer walls on both sides of the standard section are respectively connected with a plurality of steps arranged at intervals along its height direction, and the steps are used to support the flip claws rotated to the horizontal direction.

In some optional embodiments, the upper lifting seat and the lower lifting seat are respectively provided with a flip motor for driving the corresponding flip claw to rotate.

In some optional embodiments, standard section lifting structure buckles are respectively connected to both ends of the top of each standard section.

The beneficial effects of the present application are as follows: the slewing assembly and the tower crane with liftable boom provided in the present embodiment comprise a tower body composed of a plurality of standard sections connected in sequence, a slewing assembly mounted on the tower body, a lifting device for driving the slewing assembly to be lifted and lowered along the tower body, a boom and a balance arm; the slewing assembly comprises an inner slewing mechanism and an outer slewing mechanism mounted on the tower body, and a slewing support which connects the outer slewing mechanism to the inner slewing mechanism rotatably around a vertical axis, the two ends of the outer slewing mechanism are respectively connected to the boom and the balance arm, and further comprises a flip beam frame having one end hinged to one end of the top of the inner slewing mechanism, the other end of the flip beam frame being detachably connected to the other end of the top of the inner slewing mechanism, and the flip beam frame being configured to be rotatably erected on the top of any standard section and connected to or detached from the inner slewing mechanism and the corresponding standard section with the inner slewing mechanism. The slewing assembly and the tower crane with liftable boom provided in this embodiment can perform standard section addition and subtraction operations on the top of the tower body, and has the advantages of high construction efficiency and high safety in use. The slewing assembly can drive the lifting arm and the balance arm to rise and fall along the tower body to meet the use requirements of different heights.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a slewing assembly and a tower crane with a liftable boom provided in an embodiment of the present application;

FIG2 is a schematic diagram of the partial structure of a slewing assembly and a tower crane with a liftable boom provided in an embodiment of the present application;

3 is a structural schematic diagram of the first perspective of the connection between the slewing assembly, the lifting device and the tower body in the slewing assembly and the tower crane with a liftable boom provided in an embodiment of the present application;

4 is a schematic structural diagram of the second viewing angle of the connection between the slewing assembly, the lifting device and the tower body in the slewing assembly and the tower crane with a liftable boom provided in an embodiment of the present application;

FIG5 is a schematic structural diagram of a slewing assembly and a lifting device in a tower crane with a liftable boom provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a standard section of a tower crane with a slewing assembly and a liftable boom according to an embodiment of the present application.

In the figure: 100, tower body; 110, standard section; 111, step; 112, standard section hoisting structure buckle; 120, lifting arm; 130, balance arm; 140, upper lifting seat; 150, lower lifting seat; 160, flip claw; 170, lifting cylinder; 200, slewing assembly; 210, inner slewing mechanism; 220, outer slewing mechanism; 230, slewing bearing; 231, inner ring; 232, outer ring; 240, flip beam; 250, hinged column; 260, connecting column; 270, fixing pin.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

The features and performances of the slewing assembly and the tower crane with a liftable boom of the present application are further described in detail below in conjunction with the embodiments.

As shown in Figures 1, 2, 3, 4, 5 and 6, an embodiment of the present application provides a tower crane with a slewing assembly and a boom that can be raised and lowered, including a tower body 100 composed of fifteen standard sections 110 connected in sequence, a slewing assembly 200 sleeved on the tower body 100, a lifting device for driving the slewing assembly 200 to rise and fall along the tower body 100, a lifting arm 120 and a balance arm 130; the slewing assembly 200 includes an inner slewing mechanism 210 and an outer slewing mechanism 220 sleeved on the tower body 100, and a slewing bearing 230 that connects the outer slewing mechanism 220 to the inner slewing mechanism 210 rotatably around a vertical axis, the slewing bearing 230 includes an inner ring 231 connected to the inner slewing mechanism 210 and an outer ring 232 connected to the outer slewing mechanism 220, the outer ring 232 is rotatably connected to the inner ring 231, and the outer slewing mechanism 220 is rotatably connected to the inner ring 231. The two ends are respectively connected to the lifting arm 120 and the balancing arm 130; one end of the top of the inner slewing mechanism 210 is hinged with one end of the flip beam 240, and the other end of the flip beam 240 is detachably connected to the other end of the top of the inner slewing mechanism 210; the flip beam 240 is configured to be rotatably erected on the top of any standard section 110 and connected to or detached from the inner slewing mechanism 210 and the corresponding standard section 110, wherein two hinged columns 250 and two connecting columns 260 are respectively provided at the two ends of the top of the inner slewing mechanism 210; the two sides of one end of the flip beam 240 are respectively hinged to the two hinged columns 250, and the two sides of the other end are respectively detachably connected to the two connecting columns 260 by fixing pins 270; the fixing pins 270 are disengaged when moving along their axial direction or pass through the two connecting columns 260 in sequence and then inserted into the two sides of one end of the flip beam 240.

The lifting device includes an upper lifting seat 140 connected to both sides of the bottom of the inner rotary mechanism 210 and a lower lifting seat 150 respectively located below the two upper lifting seats 140. A lifting cylinder 170 is hinged between each upper lifting seat 140 and the corresponding lower lifting seat 150. The upper and lower lifting seats 140 and the lower lifting seats 150 are respectively connected at both ends with a flip claw 160 that can rotate along a vertical plane. The outer walls of both sides of the standard section 110 are respectively connected to four steps 111. Four steps 111 are arranged on one side of each standard section 110. The steps 111 are divided into two rows and arranged at intervals along the height direction. The steps 111 are used to support the flip claws 160 that are rotated to the horizontal direction. In this embodiment, the flip claws 160 are rotatably connected to the corresponding upper lifting seat 140 or lower lifting seat 150 by bolts. When the bolts are loosened, the flip claws 160 can be rotated to a vertical arrangement or a horizontal arrangement relative to the upper lifting seat 140 or the lower lifting seat 150, and then the bolts are tightened to fix the flip claws 160 to the corresponding upper lifting seat 140 or the lower lifting seat 150. The two ends of the top of each standard section 110 are respectively connected with standard section hoisting structure ring buckles 112.

The slewing assembly and the tower crane with a liftable boom provided in this embodiment include a tower body 100 composed of a plurality of standard sections 110 connected in sequence, a slewing assembly 200 sleeved on the tower body 100, and a lifting device for driving the slewing assembly 200 to rise and fall along the tower body 100. The slewing assembly 200 includes an inner slewing mechanism 210 and an outer slewing mechanism 220 sleeved on the tower body 100, and a slewing support 230 that connects the outer slewing mechanism 220 to the inner slewing mechanism 210 rotatably around a vertical axis, and the two ends of the outer slewing mechanism 220 are respectively connected to the boom 120 and the balance arm 130; when it is necessary to use the boom 120 connected to the outer slewing mechanism 220 of the slewing assembly 200 to suspend materials, a top end of the inner slewing mechanism 210 is hinged with a flip beam frame 240, and the flip beam frame 240 is rotatably erected on the top of a standard section 110 at one end away from the inner slewing mechanism 210. At the same time, the two fixing pins 270 are respectively passed through the two connecting columns 260 in sequence and then inserted into the two sides of the flip beam frame 240 away from the inner rotating mechanism 210 for fixing. At this time, the rotating assembly 200 is set and fixed to the top of the standard section 110 through the flip beam frame 240 connected at the top, thereby ensuring the stability of the lifting materials suspended by the crane arm 120 connected by the outer rotating mechanism 220. When it is necessary to adjust the position of the rotating assembly 200 along the tower body 100, the operator only needs to pull out the two fixing pins 270 from the two connecting columns 260 and the two sides of one end of the flip beam frame 240 in sequence, rotate the flip beam frame 240 to make it disengage from the standard section 110 and the tower body 100, and then the lifting device can be used to drive the rotating assembly 200 to rise and fall along the tower body 100. Specifically, taking the lifting device driving the rotating assembly 200 to rise along the tower body 100 as an example, first, the two upper lifting seats 140 are The turning claws 160 respectively connected at the two ends of the two upper lifting seats 140 are rotated to a horizontal arrangement to press against the steps 111 respectively arranged on the outer walls of the two sides of the corresponding standard section 110 for support. Then, the turning claws 160 respectively connected at the two ends of the two lower lifting seats 150 are rotated to a vertical arrangement to control the cylinder rods of the two lifting cylinders 170 to retract. At this time, the two upper lifting seats 140 and the inner slewing mechanism 210, the slewing bearing 230 and the outer slewing mechanism 220 are driven by the cylinder rods extended by the two lifting cylinders 170 to rise to the upper standard section 110. The flip claws 160 connected to the two ends of the upper lifting seat 140 are arranged horizontally and press downward against the steps 111 connected to the outer walls of the two sides of the corresponding standard section 110, so that the two lower lifting seats 150 are driven to rise to a corresponding standard section 110 through the cylinder rods contracted by the two lifting cylinders 170, and the flip claws 160 connected to the two ends of the two lower lifting seats 150 are rotated again to be horizontally arranged to be supported by the steps 111 respectively set on the outer walls of the two sides of the corresponding standard section 110, thereby completing the operation of using the lifting device to drive the rotary assembly 200 to rise along the tower body 100. At this time, the flip beam frame 240 can be rotated in the opposite direction, and the two fixing pins 270 are respectively inserted into the two ends of the flip beam frame 240 through the two connecting columns 260 in turn and fixed on both sides, and the rotary assembly 200 is erected and fixed to the top of the corresponding standard section 110 through the flip beam frame 240 connected at the top.

The two ends of the top of each standard section 110 are respectively connected with standard section hoisting structure buckles 112, so that the standard section 110 can be conveniently hoisted to the top of the tower body 100 through the standard section hoisting structure buckles 112 for connection to add sections to the tower body 100.

In other optional embodiments, the upper lifting seat 140 and the lower lifting seat 150 are also respectively connected to a flip motor for driving the corresponding flip claws 160 to rotate. The operator can control the flip motor to drive the corresponding flip claws 160 connected to the upper lifting seat 140 and the lower lifting seat 150 to rotate to a vertical arrangement for lifting, or rotate to a horizontal arrangement to press downward against the steps 111 respectively provided on the outer walls on both sides of the corresponding standard section 110 for support.

The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

Claims (4)

1. A tower crane with a slewing assembly and a lifting arm, comprising a tower body composed of a plurality of standard sections connected in sequence, a slewing assembly sleeved on the tower body, a lifting device for driving the slewing assembly to be lifted and lowered along the tower body, a lifting arm and a balancing arm; the slewing assembly comprises an inner slewing mechanism and an outer slewing mechanism sleeved on the tower body, and a slewing bearing that connects the outer slewing mechanism to the inner slewing mechanism rotatably around a vertical axis, the two ends of the outer slewing mechanism are respectively connected to the lifting arm and the balancing arm, and is characterized in that it also comprises an end A flip beam is hinged to one end of the top of the inner rotating mechanism, and the other end of the flip beam is detachably connected to the other end of the top of the inner rotating mechanism. The flip beam is configured to be rotatably mounted on the top of any standard section and connected to or detached from the inner rotating mechanism and the corresponding standard section. Two hinged columns and two connecting columns are respectively provided at both ends of the top of the inner rotating mechanism. Both sides of one end of the flip beam are respectively hinged to the two hinged columns, and both sides of the other end are detachably connected to the two connecting columns by fixing pins. 2. The tower crane with a slewing assembly and a liftable boom according to claim 1, characterized in that the lifting device comprises an upper lifting seat respectively connected to both sides of the bottom of the inner slewing mechanism and a lower lifting seat respectively located under the two upper lifting seats, at least one lifting cylinder is hinged between each of the upper lifting seats and the corresponding lower lifting seat, and both ends of the upper lifting seat and the lower lifting seat are respectively connected with a flip claw that can rotate along a vertical plane, and the outer walls on both sides of the standard section are respectively connected with a plurality of steps arranged at intervals along the height direction thereof, and the steps are used to support the flip claws rotated to the horizontal direction. 3. The slewing assembly and the tower crane with liftable boom according to claim 2, characterized in that the upper lifting seat and the lower lifting seat are respectively provided with a flip motor for driving the corresponding flip claw to rotate. 4. The slewing assembly and the tower crane with liftable boom according to claim 1 are characterized in that both ends of the top of each standard section are respectively connected with standard section hoisting structure buckles.