Tower crane with stable transition device

Abstract

The utility model discloses a tower crane with a stable transition device, which belongs to the technical field of tower crane structures and comprises a variable-cross-section tower body, the transition device and a jacking sleeve frame. The variable cross-section tower body comprises a lower-layer standard section and an upper-layer standard section, and the cross section of the upper-layer standard section is smaller than that of the lower-layer standard section; the jacking sleeve frame is arranged on the periphery of the variable cross-section tower body in a sleeving mode, a jacking rolling wheel is arranged on the inner side of the jacking sleeve frame, the jacking rolling wheel is tightly pressed on the pipe wall of the lower-layer standard knot main supporting pipe, and along with the jacking action of the jacking sleeve frame, the jacking rolling wheel is stably transited to the pipe wall of the upper-layer standard knot main supporting pipe through the wedge-shaped plate b; after the stable transition device is additionally arranged, the jacking sleeve frame can stably pass through the variable cross-section position during jacking operation of the tower crane; not only can the mounting height of the jacking sleeve frame be reduced when the variable-cross-section tower body is combined, but also the stable transition of the upper tower body during the jacking operation can be realized; the smooth transition device is convenient to operate and simple in structure, and reduces the installation cost of the tower crane.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of tower crane structures, in particular to a device capable of smoothly transitioning the rollers in a jacking sleeve when a variable cross-section tower body is jacked up or lowered. BACKGROUND

[0002] In engineering construction work, in order to reduce costs, improve tower crane utilization and installation height, a tower body combination cannot meet the use requirements. In some projects, the design height of the building is not very high, and the independent height of the general standard tower crane cannot meet the use, and after optimization comparison and analysis, the variable cross-section tower body combination can meet the demand and is also economical; therefore, the variable cross-section tower body combination is widely applied and promoted, the variable cross-section tower body combination does not need to be newly designed jacking device, and the original jacking device can be directly applied to match the transition frame to meet the use; obviously, the innovative design can meet the use of customers and reduce costs; therefore, it is necessary to develop a self-provided stable transition device with high cost performance, and the stable transition device customized in the case can solve the shaking problem of the upper part of the tower crane in the jacking and adding process. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a tower crane with a stable transition device, which uses the tower crane itself component to install a jacking sleeve roller stable transition device to complete the installation and disassembly of the tower crane, the jacking sleeve roller stable transition device can be installed on the tower crane until the tower crane is removed after the completion of the project, the jacking sleeve roller stable transition device is convenient to install and simple to operate.

[0004] In order to solve the shaking problem of the upper tower body during the jacking of the variable cross-section tower body combination of the tower crane in the prior art, the application provides a tower crane with a stable transition device, which comprises a variable cross-section tower body, a transition device and a jacking sleeve.

[0005] The variable cross-section tower body comprises a lower standard section and an upper standard section, the cross-section of the upper standard section is smaller than that of the lower standard section, and adjacent inner side surfaces of a main support pipe of the lower standard section are respectively provided with a positioning bolt hole a and a positioning bolt hole b;

[0006] The transition device includes a wedge plate a and a wedge plate b, which are arranged at 90° to each other and connected. A positioning plate a is provided at the end of the wedge plate a away from the wedge plate b. A bolt hole a is provided at the end of the wedge plate a away from the wedge plate b. The positioning plate a has a first bolt hole and a second bolt hole, and also includes a bolt a. The bolt a sequentially passes through the first bolt hole and the bolt hole a to connect the positioning plate a and the wedge plate a. A positioning plate b is provided at the end of the wedge plate b away from the wedge plate a. One end is welded to the wedge plate b, and the positioning plate b has a third bolt hole; the wedge plate a and the wedge plate b respectively fit against the adjacent outer sides of the main support tube of the upper standard section, and the lower end face of the wedge plate a and the wedge plate b rests on the upper end face of the lower standard section; it also includes positioning bolt a and positioning bolt b, the positioning bolt a sequentially passes through the second bolt hole and the positioning bolt hole a to realize the connection between the positioning plate a and the lower standard section, and the positioning bolt b sequentially passes through the third bolt hole and the positioning bolt hole b to realize the connection between the positioning plate b and the lower standard section;

[0007] The lifting sleeve is fitted around the outer periphery of the variable cross-section tower body. Lifting rollers are provided on the inner side of the lifting sleeve. The lifting rollers are pressed against the pipe wall of the lower standard section main support pipe. As the lifting sleeve is lifted, the lifting rollers are smoothly transferred to the pipe wall of the upper standard section main support pipe via the wedge plate b.

[0008] Furthermore, this application provides a tower crane with a smooth transition device, wherein the wedge plate a and the wedge plate b are integrally formed.

[0009] This invention has the following advantages over the prior art:

[0010] The addition of a smooth transition device ensures that the jacking frame passes smoothly through the variable cross-section position during the jacking operation of the tower crane. It not only reduces the installation height of the jacking frame when assembling the variable cross-section tower body, but also ensures a smooth transition of the upper tower body during the jacking operation. The smooth transition device is easy to operate, has a simple structure, and reduces the installation cost of the tower crane. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a tower crane with a smooth transition device according to this application, showing the assembly relationship between the variable cross-section tower body, the transition device and the lifting frame;

[0012] Figure 2 This is a schematic diagram of the transition device structure in a tower crane with a smooth transition device according to this application.

[0013] The components are: 1. Lifting frame; 2. Lower standard section; 3. Upper standard section; 4. Wedge plate a; 5. Wedge plate b; 6. Positioning plate a; 7. Bolt hole a; 8. First bolt hole; 9. Second bolt hole; 10. Bolt a; 11. Positioning plate b; 12. Third bolt hole; 13. Positioning bolt a; 14. Positioning bolt b; 15. Lifting roller. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1 and Figure 2 As shown, this embodiment provides a tower crane with a smooth transition device, which includes a variable cross-section tower body, a transition device and a lifting frame 1;

[0018] The variable cross-section tower body includes a lower standard section 2 and an upper standard section 3. The cross-section of the upper standard section 3 is smaller than that of the lower standard section 2. Positioning bolt holes a and b are respectively opened on the adjacent inner sides of the main support pipe of the lower standard section 2.

[0019] The transition device comprises a wedge-shaped plate a4 and a wedge-shaped plate b5, the wedge-shaped plate a4 and the wedge-shaped plate b5 are arranged at 90°, the wedge-shaped plate a4 and the wedge-shaped plate b5 are integrally formed, one end of the wedge-shaped plate a4 away from the wedge-shaped plate b5 is provided with a positioning plate a6, the end of the wedge-shaped plate a4 away from the wedge-shaped plate b5 is provided with a bolt hole a7, the positioning plate a6 is provided with a first bolt hole 8 and a second bolt hole 9, further comprising a bolt a10, the bolt a10 sequentially penetrates the first bolt hole 8 and the bolt hole a7 to realize the connection between the positioning plate a6 and the wedge-shaped plate a4, one end of the wedge-shaped plate b5 away from the wedge-shaped plate a4 is provided with a positioning plate b11, one end of the positioning plate b11 is welded to the wedge-shaped plate b5, and the positioning plate b11 is provided with a third bolt hole 12; the wedge-shaped plate a4 and the wedge-shaped plate b5 respectively abut the adjacent outer side surfaces of the upper standard section 3 main support pipe, and the lower end surfaces of the wedge-shaped plate a4 and the wedge-shaped plate b5 are placed on the upper end surfaces of the lower standard section 2; further comprising a positioning bolt a13 and a positioning bolt b14, the positioning bolt a13 sequentially penetrates the second bolt hole 9 and the positioning bolt hole a to realize the connection between the positioning plate a6 and the lower standard section 2, and the positioning bolt b14 sequentially penetrates the third bolt hole 12 and the positioning bolt hole b to realize the connection between the positioning plate b11 and the lower standard section 2.

[0020] The jacking sleeve frame 1 is sleeved on the outer periphery of the variable cross-section tower body, the jacking roller 15 is arranged on the inner side of the jacking sleeve frame 1, the jacking roller 15 is pressed against the pipe wall of the lower standard section 2 main support pipe, and along with the jacking action of the jacking sleeve frame 1, the jacking roller 15 stably transitions to the pipe wall of the upper standard section 3 main support pipe through the wedge-shaped plate b5.

[0021] The tower crane assembly and use process provided by the embodiment with the smooth transition device are as follows: the jacking sleeve frame 1 is sleeved on the upper standard section 3 and the lower standard section 2 respectively, at this time, the jacking roller 15 is in close contact with the pipe wall of the main support pipe of the lower standard section 2, when the connection of the upper standard section 3 and the lower standard section 2 is achieved, the inner right angle surface of the wedge-shaped plate a4 and the wedge-shaped plate b5 is in close contact with the adjacent outer side surface of the upper standard section 3, at the same time, the positioning plate b11 is clamped into the inner side wall of the main support pipe of the lower standard section 2, and the lower end surface of the wedge-shaped plate a4 and the wedge-shaped plate b5 is placed on the upper end surface of the lower standard section 2, in order to achieve the smooth transition of the pipe wall of the main support pipe of the lower standard section 2 and the pipe wall of the main support pipe of the upper standard section, the lower end of the wedge-shaped plate a4 and the wedge-shaped plate b5 is kept flush with the pipe wall of the main support pipe of the lower standard section 2, and the upper end of the wedge-shaped plate a4 and the wedge-shaped plate b5 is obliquely cut into the pipe wall of the main support pipe of the upper standard section 3, the connection between the positioning plate b11 and the lower standard section 2 is achieved by sequentially penetrating the third bolt hole 12 and the positioning bolt hole b through the positioning bolt b14, the connection between the positioning plate a6 and the wedge-shaped plate a4 is achieved by sequentially penetrating the first bolt hole 8 and the bolt hole a7 through the bolt a10, and the connection between the positioning plate a6 and the lower standard section 2 is achieved by sequentially penetrating the second bolt hole 9 and the positioning bolt hole a through the positioning bolt a13; in the jacking process, the jacking roller 15 is smoothly transitioned from the pipe wall of the main support pipe of the lower standard section 2 to the pipe wall of the main support pipe of the upper standard section 3 through the wedge-shaped plate b5, so that the smooth transition of the upper tower body during jacking operation is achieved.

[0022] The parts not described in the utility model are the known technology of those skilled in the art.

[0023] The above detailed the preferred embodiments of the utility model. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the conception of the utility model. Therefore, all the technical solutions obtained by logical analysis, reasoning or limited experiments on the basis of the prior art according to the conception of the utility model should be within the protection scope determined by the claims.

Claims

1. A tower crane equipped with a smooth transition device, characterized in that, This includes the variable cross-section tower body, transition device, and jacking frame; The variable cross-section tower body includes a lower standard section and an upper standard section. The cross-section of the upper standard section is smaller than that of the lower standard section. The adjacent inner sides of the main support pipe of the lower standard section are respectively provided with positioning bolt holes a and b. The transition device includes a wedge plate a and a wedge plate b, which are arranged at 90° to each other and connected. A positioning plate a is provided at the end of the wedge plate a away from the wedge plate b. A bolt hole a is provided at the end of the wedge plate a away from the wedge plate b. The positioning plate a has a first bolt hole and a second bolt hole, and also includes a bolt a. The bolt a sequentially passes through the first bolt hole and the bolt hole a to connect the positioning plate a and the wedge plate a. A positioning plate b is provided at the end of the wedge plate b away from the wedge plate a. One end is welded to the wedge plate b, and the positioning plate b has a third bolt hole; the wedge plate a and the wedge plate b respectively fit against the adjacent outer sides of the main support tube of the upper standard section, and the lower end face of the wedge plate a and the wedge plate b rests on the upper end face of the lower standard section; it also includes positioning bolt a and positioning bolt b, the positioning bolt a sequentially passes through the second bolt hole and the positioning bolt hole a to realize the connection between the positioning plate a and the lower standard section, and the positioning bolt b sequentially passes through the third bolt hole and the positioning bolt hole b to realize the connection between the positioning plate b and the lower standard section; The lifting sleeve is fitted around the outer periphery of the variable cross-section tower body. Lifting rollers are provided on the inner side of the lifting sleeve. The lifting rollers are pressed against the pipe wall of the lower standard section main support pipe. As the lifting sleeve is lifted, the lifting rollers are smoothly transferred to the pipe wall of the upper standard section main support pipe via the wedge plate b.

2. The tower crane with a smooth transition device according to claim 1, characterized in that, The wedge plate a and the wedge plate b are integrally formed.

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