Bottom beam of tower crane

Abstract

The utility model discloses a bottom beam of a tower crane, which relates to the field of bottom beams of cranes and comprises a fixed seat, the top end of the fixed seat is rotatably connected with a rotating seat, the end parts of the fixed seat and the rotating seat are hinged with a supporting seat, and a limiting mechanism is arranged on the fixed seat and the rotating seat; the limiting mechanism comprises a positioning unit and a limiting unit, and the positioning unit is used for providing installation positioning for a beam body of the tower crane; and the limiting unit is used for providing limiting for the movement of the positioning unit. The fixed seat and the rotating seat are rotationally connected, so that the fixed seat and the rotating seat which are in a cross shape rotate, the occupied space of the fixed seat and the rotating seat is reduced, the fixed seat and the rotating seat are convenient to transfer and store, and in the using process, the rotating seat and the fixed seat are positioned through the supporting rod, so that the use is convenient. And meanwhile, positioning is provided for installation of the tower crane beam body through the movable seat, installation and storage of the bottom beam are facilitated, and the working efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of crane bottom beams, specifically a tower crane bottom beam. Background Technology

[0002] Tower cranes are rotating cranes with their booms mounted on the upper part of a tall tower. They have a large working space and are mainly used for the vertical and horizontal transport of materials and the installation of building components in building construction. They consist of three parts: a metal structure, a working mechanism, and an electrical system.

[0003] In the prior art, during the installation of tower cranes, it is generally necessary to fix the bottom beam of the tower crane to the base arranged on the ground. After the tower crane is used, it needs to be disassembled and moved again. The existing bottom beams are generally fixed in a cross shape, which is not convenient for folding and storage, nor for moving the bottom beam. Based on this, this utility model proposes a bottom beam for tower cranes. Utility Model Content

[0004] The purpose of this utility model is to provide a tower crane bottom beam in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tower crane bottom beam, including a fixed seat, a rotating seat rotatably connected to the top of the fixed seat, a support seat hinged to the ends of the fixed seat and the rotating seat, and a limiting mechanism provided on the fixed seat and the rotating seat;

[0006] The limiting mechanism includes a positioning unit and a limiting unit;

[0007] The positioning unit is used to provide installation positioning for the beam of the tower crane;

[0008] The limiting unit is used to limit the movement of the positioning unit.

[0009] As a further embodiment of this utility model: the positioning unit includes a support rod, a movable seat, and a guide groove;

[0010] The support rod is disposed between the fixed seat and the rotating seat, and the support rod is used to provide limiting support for the rotation of the fixed seat and the rotating seat;

[0011] The movable seat is slidably mounted on the outer wall of the fixed seat, and the movable seat is used to provide positioning for the installation of the tower crane beam.

[0012] The guide groove is formed on the outer wall of the fixed seat, and the guide groove is used to guide the axial movement of the movable seat.

[0013] As a further embodiment of this utility model: the limiting unit includes a movable block, a limiting block, and a limiting groove;

[0014] The movable block is vertically slidably installed on the inner wall of the movable seat and extends to the outside of the movable seat. The movable block is used to synchronously drive the limiting block to move vertically.

[0015] The limiting block is fixed to the end of the movable block and extends to the bottom of the movable seat. The limiting block is used to cooperate with the limiting groove to limit the axial movement of the movable seat.

[0016] The limiting groove is located above the guide groove and is used to provide space for the entry of the limiting block.

[0017] As a further embodiment of this utility model: the outer wall of the fixed seat and the rotating seat is provided with a docking block for inserting the support rod, and the number of support rods is four, which are evenly distributed at the opening ends of the fixed seat and the rotating seat.

[0018] As a further improvement of this utility model, the number of movable seats is provided as two, and the two movable seats are symmetrically distributed on the outer wall of the fixed seat.

[0019] As a further improvement of this utility model: the outer walls of the limiting block and the movable block are generally in an "L" shape, and the inner side of the limiting groove matches the outer wall of the limiting block.

[0020] As a further improvement of this utility model, the outer wall of the movable seat is provided with a sliding groove for the vertical movement of the movable block.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The fixed and rotating seats are connected by a rotating mechanism, allowing the cross-shaped fixed and rotating seats to rotate. This reduces the space occupied by the fixed and rotating seats and facilitates their transfer and storage. During use, the rotating and fixed seats are positioned by the support rods, while the movable seat provides positioning for the installation of the tower crane beam, facilitating the installation and storage of the bottom beam and further improving work efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the distribution structure of the movable seat and support rod of this utility model;

[0025] Figure 3 This is a cross-sectional view of the internal structure of the movable seat of this utility model.

[0026] In the diagram: 1. Fixed seat; 2. Rotating seat; 3. Support seat; 4. Limiting mechanism; 401. Support rod; 402. Movable seat; 403. Guide groove; 404. Movable block; 405. Limiting block; 406. Limiting groove. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-3 In this embodiment of the utility model, a tower crane bottom beam includes a fixed seat 1, a rotating seat 2 rotatably connected to the top of the fixed seat 1, a support seat 3 hinged to the ends of the fixed seat 1 and the rotating seat 2, and a limiting mechanism 4 provided on the fixed seat 1 and the rotating seat 2.

[0029] The limiting mechanism 4 includes a positioning unit and a limiting unit;

[0030] The positioning unit is used to provide installation positioning for the beams of the tower crane;

[0031] The limiting unit is used to limit the movement of the positioning unit;

[0032] The positioning unit includes a support rod 401, a movable seat 402, and a guide groove 403;

[0033] The support rod 401 is disposed between the fixed seat 1 and the rotating seat 2, and the support rod 401 is used to provide limiting support for the rotation of the fixed seat 1 and the rotating seat 2;

[0034] The movable seat 402 is slidably mounted on the outer wall of the fixed seat 1, and the movable seat 402 is used to provide positioning for the installation of the tower crane beam.

[0035] A guide groove 403 is formed on the outer wall of the fixed seat 1, and the guide groove 403 is used to guide the axial movement of the movable seat 402;

[0036] The limiting unit includes a movable block 404, a limiting block 405, and a limiting groove 406;

[0037] The movable block 404 is vertically slidably installed on the inner wall of the movable seat 402 and extends to the outside of the movable seat 402. The movable block 404 is used to synchronously drive the limit block 405 to move vertically.

[0038] The limiting block 405 is fixed to the end of the movable block 404 and extends to the bottom of the movable seat 402. The limiting block 405 is used to cooperate with the limiting groove 406 to limit the axial movement of the movable seat 402.

[0039] The limiting groove 406 is formed above the guide groove 403, and the limiting groove 406 is used to provide space for the entry of the limiting block 405.

[0040] In this embodiment: With this structure, when it is necessary to install and connect the fixed seat 1, rotating seat 2, and tower crane base, the rotating seat 2 is rotated via the device at the connection point of the fixed seat 1 and rotating seat 2. The support rod 401 supports the open ends of the rotating seat 2 and fixed seat 1, making the rotating seat 2 and fixed seat 1 in a cross shape. At this time, the docking slots on the fixed seat 1 and rotating seat 2 can be aligned with the vertical rods on the tower crane base, completing the connection between the fixed seat 1, rotating seat 2, and the base. Then, an axial thrust is applied to the movable seat 402, causing it to move axially along the outer wall of the fixed seat 1 through the guide groove 403. This aligns the limiting block 405 on the movable seat 402 with the limiting groove 406. Under the action of gravity, the limiting block 405 engages with the inner side of the limiting groove 406, limiting the movement of the movable seat 402. This facilitates the subsequent docking and alignment of the tower crane beam with the top of the movable seat 402, making installation, docking, and folding easier, further improving work efficiency.

[0041] Please refer to this carefully. Figures 1-3 The outer walls of the fixed seat 1 and the rotating seat 2 are provided with docking blocks for the insertion of the support rods 401. There are four support rods 401, which are evenly distributed at the opening ends of the fixed seat 1 and the rotating seat 2. There are two movable seats 402, which are symmetrically distributed on the outer wall of the fixed seat 1. The outer walls of the limiting block 405 and the movable block 404 are in an "L" shape. The inner side of the limiting groove 406 matches the outer wall of the limiting block 405. The outer wall of the movable seat 402 is provided with a sliding groove for the vertical movement of the movable block 404.

[0042] In this embodiment: This structure can provide an upward thrust to the movable block 404, causing the movable block 404 to move upward synchronously with the limiting block 405, so that the limiting block 405 disengages from the inner side of the limiting groove 406, thereby releasing the axial movement limitation of the movable seat 402. Then, when the fixed seat 1 and the rotating seat 2 are stored, the rotating seat 2 will gradually approach the movable seat 402, providing an axial movement thrust to the movable seat 402, so that the movable seat 402 moves to the end of the fixed seat 1, reducing the floor space occupied by the fixed seat 1 and the rotating seat 2, and facilitating the transfer and storage of the fixed seat 1 and the rotating seat 2.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tower crane base beam, comprising a fixed seat (1), a rotating seat (2) rotatably connected to the top of the fixed seat (1), and support seats (3) hinged to the ends of the fixed seat (1) and the rotating seat (2), characterized in that, Limiting mechanisms (4) are installed on the fixed seat (1) and the rotating seat (2); The limiting mechanism (4) includes a positioning unit and a limiting unit; The positioning unit is used to provide installation positioning for the beam of the tower crane; The limiting unit is used to limit the movement of the positioning unit.

2. The tower crane bottom beam according to claim 1, characterized in that, The positioning unit includes a support rod (401), a movable seat (402), and a guide groove (403); The support rod (401) is disposed between the fixed seat (1) and the rotating seat (2), and the support rod (401) is used to provide limiting support for the rotation of the fixed seat (1) and the rotating seat (2); The movable seat (402) is slidably mounted on the outer wall of the fixed seat (1), and the movable seat (402) is used to provide positioning for the installation of the tower crane beam; The guide groove (403) is formed on the outer wall of the fixed seat (1), and the guide groove (403) is used to guide the axial movement of the movable seat (402).

3. The tower crane bottom beam according to claim 2, characterized in that, The limiting unit includes a movable block (404), a limiting block (405), and a limiting groove (406); The movable block (404) is vertically slidably installed on the inner wall of the movable seat (402) and extends to the outside of the movable seat (402). The movable block (404) is used to synchronously drive the limiting block (405) to move vertically. The limiting block (405) is fixed to the end of the movable block (404) and extends to the bottom of the movable seat (402). The limiting block (405) is used to cooperate with the limiting groove (406) to limit the axial movement of the movable seat (402). The limiting groove (406) is formed above the guide groove (403), and the limiting groove (406) is used to provide space for the entry of the limiting block (405).

4. A tower crane bottom beam according to claim 2, characterized in that, The outer walls of the fixed seat (1) and the rotating seat (2) are provided with docking blocks for inserting support rods (401). There are four support rods (401), which are evenly distributed at the opening ends of the fixed seat (1) and the rotating seat (2).

5. A tower crane bottom beam according to claim 2, characterized in that, There are two movable seats (402), which are symmetrically distributed on the outer wall of the fixed seat (1).

6. A tower crane bottom beam according to claim 3, characterized in that, The outer walls of the limiting block (405) and the movable block (404) are generally L-shaped, and the inner side of the limiting groove (406) matches the outer wall of the limiting block (405).

7. A tower crane bottom beam according to claim 3, characterized in that, The outer wall of the movable seat (402) is provided with a sliding groove for the movable block (404) to move vertically.

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