Bolt assembly type clamp for attached frame of tower crane

Abstract

The utility model discloses a bolt assembly type hoop for a tower crane attachment frame in the technical field of tower crane components, which comprises a top block component, a main plate, a sleeve and a bolt, the main plate is an integrally formed half-surrounded structure, the half-surrounded structure is provided with a concave side and a convex side, the top block component is fixed on the concave side of the main plate, and the sleeve is fixed on the convex side of the main plate. Connecting holes are formed in the two ends of each main plate respectively, a plurality of mounting holes are formed in the portion, between the concave side and the convex side of each main plate, of the main body, the number of the main plates is two, the two main plates are distributed at the two ends of the sleeve in a mirror image mode, the main plates abut against the ends of the sleeve, the bolts penetrate through the mounting holes and the sleeve, and the two main plates are fixed to the ends of the sleeve through the bolts. The hoop solves the technical problems that an existing hoop is difficult to install and low in structural strength, the main board is integrally formed to be of a semi-surrounding structure so that the structural strength can be improved, meanwhile, the hoop is divided into a plurality of light components, workers can work aloft conveniently, and the installation difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of tower crane components, and in particular to a bolt-assembled clamp for the attachment frame of a tower crane. Background Technology

[0002] Currently, the clamps used in tower cranes are used to secure the attachment frame to the standard sections of the tower body.

[0003] Chinese utility model patent CN205662258U discloses an attachment frame device for tower cranes, consisting of a beam frame, four clamps, four top blocks, and eight support components. The clamps are small rectangular structures lacking one side, directly welded from straight square plates. This structure is bulky and has low structural strength, especially at the welded joints between the horizontal and vertical plates. Since tower cranes are typically used outdoors, the clamps are susceptible to rain corrosion, which weakens the weld joint and causes cracks, creating safety hazards. The clamps, welded from straight square plates, generally weigh over 90 kg. During installation, they must be manually moved from outside the standard tower section to inside, assembled and fixed to the attachment frame, and then secured to the standard tower section. This requires mechanical handling such as hoists, is time-consuming, and difficult to install. Utility Model Content

[0004] To address the technical problems of existing clamps being difficult to install and having low structural strength, this utility model provides a bolt-assembled clamp for the attachment frame of a tower crane that is easy to install and has high strength.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] The bolt-assembled clamp for the attachment frame of a tower crane includes a top block component, a main plate, a sleeve, and bolts. The main plate is a one-piece semi-enclosed structure with a concave side and a convex side. The top block component is fixed to the concave side of the main plate. Connection holes are provided at both ends of the main plate. Multiple mounting holes are provided on the main body between the concave and convex sides of the main plate. There are two main plates, which are mirror images of each other at both ends of the sleeve. The main plates abut against the ends of the sleeve. Bolts are inserted through the mounting holes and the sleeve, and the bolts fix the two main plates to the ends of the sleeve.

[0007] Furthermore, a central hole is provided on the main body between the concave and convex sides of the motherboard.

[0008] Furthermore, the sleeve has mating parts at both ends, and the middle part is between the two mating parts of the sleeve. The outer diameter of the mating part is smaller than the outer diameter of the middle part. A step is formed at the junction of the mating part and the middle part. The mating part passes through the mounting hole of the main board, and the step abuts against the plane of the main board.

[0009] Furthermore, it also includes a gasket, which is fitted onto the bolt, and the outer diameter of the gasket is larger than the diameter of the mounting hole.

[0010] Furthermore, the top block component has a protrusion with bolt holes, the protrusion extends between the two main boards, and a portion of the top block component abuts against the concave side of the main board, with bolts passing through the mounting holes of the main board and the bolt holes of the protrusion.

[0011] Furthermore, the motherboard has a symmetrical structure.

[0012] The beneficial effects of this utility model are:

[0013] By setting the main board as a one-piece semi-enclosed structure instead of the traditional welded horizontal and vertical plates, the welded joints between the horizontal and vertical plates are not easily damaged, thus improving the structural strength. In addition, the use of two main boards with sleeves and bolts reduces the welding structure in the clamp, breaking down the clamp, which weighs more than 90 kg, into multiple lighter parts, making it easier for workers to operate at heights and reducing the difficulty of installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the bolt-assembled clamp for the attachment frame of a tower crane according to this utility model;

[0015] Figure 2 yes Figure 1 An explosion diagram;

[0016] Figure 3 This is a schematic diagram of a clamp without a central hole.

[0017] Figure 4 This is a schematic diagram of the sleeve structure;

[0018] Figure 5 This is a structural schematic diagram of the top block component;

[0019] Figure 6 This is a schematic diagram of the structure of the clamp installed on the attachment frame of the tower crane;

[0020] Figure 7 This is a schematic diagram of the structure of a tower crane's attachment frame installed on a standard section of the tower body using clamps;

[0021] The markings in the diagram are as follows: 1-Top block component, 2-Main board, 3-Sleeve, 4-Bolt, 5-Concave side, 6-Convex side, 7-Connecting hole, 8-Mounting hole, 9-Intermediate hole, 10-Step, 11-Shim, 12-Protrusion, 13-Bolt hole, 14-Front beam, 15-Rear beam, 16-Side beam, 17-Standard section of tower body, 18-Wedge block, 19-Telescopic rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the present invention will be further described below with reference to the accompanying drawings.

[0023] First, it should be stated that the technical solutions of the embodiments of this application are clearly and completely described. The described embodiments are only some of the embodiments of this application, and not a limitation of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In the description of this utility model, it should be understood that the terms "first", "second", "upper", "lower", "left", "right", "inner", "outer", "axial" or "radial" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0025] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation," etc., should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Reference Figures 1 to 7 This utility model provides a bolt-assembled clamp for the attachment frame of a tower crane.

[0027] like Figures 1 to 3 As shown in the embodiment of this solution, the bolt-assembled clamp for the attachment frame of the tower crane includes a top block component 1, a main board 2, a sleeve 3, and bolts 4. The main board 2 is an integrally formed semi-enclosed structure with a concave side 5 and a convex side 6. The top block component 1 is fixed to the concave side 5 of the main board 2. Connection holes 7 are respectively provided at both ends of the main board 2. Multiple mounting holes 8 are provided on the main body between the concave side 5 and the convex side 6 of the main board 2. There are two main boards 2, which are mirror-distributed at both ends of the sleeve 3. The main boards 2 abut against the ends of the sleeve 3. Bolts 4 are inserted into the mounting holes 8 and the sleeve 3, and bolts 4 fix the two main boards 2 to the ends of the sleeve 3.

[0028] The motherboard 2 has a semi-enclosed structure. It can be an arc-shaped structure or composed of multiple segments. Not every segment needs to be arc-shaped; it can be a combination of straight lines and arcs, giving the motherboard 2 a roughly curved structure. This results in the motherboard 2 having protruding ends and a recessed middle section, facilitating the placement of the top block component 1 in the recessed area. For example… Figure 2 As shown, the motherboard 2 is shaped like an arc. There are two motherboards 2, and the two motherboards 2 usually have the same structure, so that the corresponding connection holes 7 and mounting holes 8 on the two motherboards 2 correspond to each other, so as to facilitate the assembly of the two motherboards 2 into a clamp. That is, the central axis of the connection hole 7 of the two motherboards 2 is coaxial, the central axis of the middle hole 9 of the two motherboards 2 is coaxial, and the central axis of the mounting hole 8 of the two motherboards 2 is coaxial.

[0029] like Figure 4 As shown, for the setting of sleeve 3, the outer diameter of sleeve 3 can be set to be larger than the diameter of mounting hole 8, so that sleeve 3 can abut against the two main boards 2; or mating parts can be set at both ends of sleeve 3, with the middle part between the two mating parts of sleeve 3. The outer diameter of the mating part is smaller than the outer diameter of the middle part, and a step 10 is formed at the junction of the mating part and the middle part. The mating part passes through the mounting hole 8 of the main board 2, and the step 10 abuts against the plane of the main board 2. In this way, sleeve 3 can also abut against the two main boards 2.

[0030] For the dimensions of step 10, preferably, the outer diameter of the middle part should be 2mm-3mm larger than the diameter of the mounting hole 8 to support the main plate 2, and the hollow inner diameter of the sleeve 3 should be 2mm-3mm larger than the diameter of the bolt 4.

[0031] A central hole 9 is provided on the main body between the concave side 5 and the convex side 6 of the motherboard 2; alternatively, a raised structure can be provided on the convex side 6 of the motherboard 2, and the central hole 9 can be located on the raised structure.

[0032] like Figures 1 to 3 As shown, in this embodiment of the solution, a washer 11 is also included. The washer 11 is sleeved on the bolt 4, and the outer diameter of the washer 11 is larger than the diameter of the mounting hole 8. Washers 11 are installed at both ends of the bolt 4. The washer 11 is located between the nut of the bolt 4 and the main plate 2, and between the bolt head of the bolt 4 and the main plate 2.

[0033] like Figures 1 to 3 As shown in the embodiment of this solution, the main board 2 has a symmetrical structure. In order to optimize the stress of the clamp, the main board 2 is set as a symmetrical structure, the middle hole 9 is set on the axis of symmetry, and the two connecting holes 7 are symmetrically distributed on both sides of the axis of symmetry. Preferably, the top block component 1 is also located on the axis of symmetry.

[0034] like Figure 1 , Figure 2 and Figure 5As shown, in this embodiment of the solution, the top block component 1 has a protrusion 12, and a bolt hole 13 is provided on the protrusion 12. The protrusion 12 extends between the two main boards 2. A part of the top block component 1 abuts against the concave side 5 of the main board 2. The bolt 4 passes through the mounting hole 8 of the main board 2 and the bolt hole 13 of the protrusion 12.

[0035] The top component 1 can be directly soldered onto the motherboard 2, or it can be fixed in the manner described in the above embodiment. The top component 1 is arranged on the concave side 5 of the motherboard 2, and the protrusion 12 of the top component 1 is located between the two motherboards 2. The bolt 4 passes through the bolt hole 13 of the protrusion 12 and the mounting hole 8 of the motherboard 2. In addition, the top component 1 has a part that abuts against the concave side 5 of the motherboard 2 to achieve the fixation of the top component 1 relative to the motherboard 2. This part can be the outer surface of the top component 1 or a peripheral component.

[0036] The specific structure of the top block component 1 has no substantial impact on this utility model, and the structure used in the prior art can be referenced, so it will not be described in detail here.

[0037] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the bolt-assembled clamp is applied to the tower crane attachment frame. The operation procedure is as follows: First, the front beam 14, rear beam 15, and two side beams 16 should be hoisted to a suitable position on the standard tower section 17. These are then assembled into the tower crane attachment frame using eight pins. Next, the two main plates 2 are moved to the first corner of the four corners of the tower crane attachment frame. The two main plates 2 are then assembled into a clamp using three bolts 4 and three sleeves 3. The connecting holes 7 of the main plates 2 are connected to the tower crane attachment frame via pins. Then, the top block component 1 is installed. The top block component 1 is installed on the clamp using bolts 4. A wedge 18 is inserted into the top block component 1, positioned in the gap between the standard tower section 17 and the top block component 1, to secure the standard tower section 17 with the clamp. Following the above method, clamps are installed diagonally opposite the first corner of the standard tower section 17. Both clamps at these two corners have a central hole 9. The clamps at the other two corners do not require a central hole 9 and are installed using the same method. Finally, the telescopic rod 19 is adjusted to a suitable length, and both ends of the telescopic rod 19 are connected to the central holes 9 of the clamps via pins. The wedges 18 are then tightened to complete the installation of the tower crane's attachment frame.

Claims

1. A bolt-assembled clamp for a tower crane attachment frame, including a top block component (1), characterized in that: It also includes a main board (2), a sleeve (3) and a bolt (4). The main board (2) is a semi-enclosed structure formed in one piece. The semi-enclosed structure has a concave side (5) and a convex side (6). The top block component (1) is fixed on the concave side (5) of the main board (2). The two ends of the main board (2) are respectively provided with connection holes (7). Multiple mounting holes (8) are provided on the main body between the concave side (5) and the convex side (6) of the main board (2). There are two main boards (2). The two main boards (2) are distributed in a mirror image at both ends of the sleeve (3). The ends of the main board (2) and the sleeve (3) abut against each other. The bolt (4) passes through the mounting holes (8) and the sleeve (3). The bolt (4) fixes the two main boards (2) to the ends of the sleeve (3).

2. The bolt-assembled clamp for the attachment frame of a tower crane as described in claim 1, characterized in that: A central hole (9) is provided on the main body between the concave side (5) and the convex side (6) of the main body (2).

3. The bolt-assembled clamp for the attachment frame of a tower crane as described in claim 1, characterized in that: The sleeve (3) has mating parts at both ends, and the middle part is between the two mating parts of the sleeve (3). The outer diameter of the mating part is smaller than the outer diameter of the middle part. A step (10) is formed at the junction of the mating part and the middle part. The mating part passes through the mounting hole (8) of the main board (2). The step (10) abuts against the plane of the main board (2).

4. The bolt-assembled clamp for the attachment frame of a tower crane as described in claim 1, characterized in that: It also includes a gasket (11), which is fitted onto the bolt (4), and the outer diameter of the gasket (11) is larger than the diameter of the mounting hole (8).

5. The bolt-assembled clamp for the attachment frame of a tower crane as described in claim 1, characterized in that: The top block component (1) has a protrusion (12) with a bolt hole (13) on it. The protrusion (12) extends between the two main boards (2). The top block component (1) has a part that abuts against the concave side (5) of the main board (2). The bolt (4) passes through the mounting hole (8) of the main board (2) and the bolt hole (13) of the protrusion (12).

6. The bolt-assembled clamp for the attachment frame of a tower crane as described in claim 1, characterized in that: The motherboard (2) has a symmetrical structure.

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