Tower crane bolt locking device

Abstract

The utility model relates to the technical field of tower cranes, in particular to a tower crane bolt locking device which comprises a folded plate and an arm plate, kidney-shaped holes are axially formed in the folded plate and the arm plate respectively, connecting bolts are inserted into the kidney-shaped holes in the folded plate and the kidney-shaped holes in the arm plate at the same time, and the connecting bolts are connected with connecting nuts. And the free end of the arm plate is connected with the locking piece. Two adjacent tower crane nuts are locked through the locking piece, rotation of the tower crane nuts is limited while looseness is prevented, stability and safety of a tower crane during working are guaranteed, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, in particular to a tower crane bolt anti-loosening device. Background Art

[0002] A tower crane, also known as a tower crane, is composed of a tower body, turntable, base, boom, and counter-arm. It serves as the crane's skeleton and provides structural support for the entire structure. The tower body is one of the main structures, constructed from a foundation section and standard sections. It withstands the pressure caused by the weight of the rotating section, the torque caused by inertia, and the bending moment caused by the weight of the cargo. The turntable is the component between the rotating and fixed sections. The base supports the entire structure. Bolts are often used to connect the foundation section to the standard section, and between the standard sections. Because the boom and counter-arm need to rotate, the tower body will shake, and the nuts are prone to loosening after long-term use. Furthermore, the tower body is relatively high, making climbing and inspection difficult. Utility Model Content

[0003] The utility model aims to solve the above-mentioned defects and provides a tower crane bolt anti-loosening device.

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: a tower crane bolt anti-loosening device, including a folding plate and an arm plate, the folding plate and the arm plate are respectively axially opened with waist-shaped holes, and the waist-shaped holes on the folding plate and the waist-shaped holes on the arm plate are simultaneously inserted with connecting bolts, and the connecting bolts are connected with the connecting nuts, and the free end of the arm plate is connected with the locking piece.

[0005] A further improvement includes providing knurling on the surfaces of the folding plate and the arm plate for increasing friction.

[0006] A further improvement includes that the locking member comprises an upper clamp and a lower clamp, clamping bolts are respectively passed through both ends of the upper clamp and the lower clamp, and the clamping bolts are connected to the clamping nuts to tighten the upper clamp and the lower clamp.

[0007] A further improvement includes one of the clamping bolts passing through a waist-shaped hole on the arm plate.

[0008] A further improvement includes one of the clamping bolts passing through a connecting hole opened on the arm plate.

[0009] A further improvement includes installing an adjustment cylinder between the upper clamp and the lower clamp and sleeved on one of the clamping bolts.

[0010] A further improvement includes providing knurling on the surfaces of the upper clamp and the lower clamp in the area where the clamp is applied to the tower crane nut.

[0011] A further improvement includes connecting side panels to both sides of the folding plate.

[0012] The beneficial effects of the utility model are as follows: the design locks two adjacent tower crane nuts through a locking piece, preventing loosening while limiting their rotation, thereby ensuring the stability and safety of the tower crane during operation and avoiding safety accidents; and the provision of knurling is conducive to increasing friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 It is the main view of the utility model;

[0015] Figure 2 It is a left side view of the first embodiment of the present utility model;

[0016] Figure 3 This is a left side view of the second embodiment of the present utility model;

[0017] Figure 4 This is a front view of the first embodiment of the arm plate in the present utility model;

[0018] Figure 5 This is a front view of the second embodiment of the arm plate in the present utility model;

[0019] In the figure, 1-arm plate, 2-folding plate, 3-locking piece, 4-bolt, 5-nut, 6-waist-shaped hole, 7-rough part, 8-connecting hole, 9-side plate, 301-upper clamp, 302-lower clamp, 303-adjusting cylinder. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. The embodiments of the basic utility model and all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present utility model.

[0021] according to Figure 1 and Figure 2As shown, a tower crane connecting bolt anti-loosening device includes a folding plate 2 and an arm plate 1, and waist-shaped holes 6 are axially opened on the folding plate 2 and the arm plate 1 respectively, and the waist-shaped holes 6 on the folding plate 2 and the waist-shaped holes 6 on the arm plate 1 are simultaneously inserted with connecting bolts 4 to connect the two in series, and the connecting bolts 4 are connected with the connecting nuts 5, so that the arm plate 1 can be adjusted in position on the side of the folding plate 2, and the free end of the arm plate 1 is connected to the locking piece 3. The tower crane nut is locked by cooperating with the two locking pieces 3 through the folding plate 2 in the above manner, and the folding plate 2 is fitted at the right-angle corner of the tower crane, thereby limiting the tower crane nut from loosening and rotating, preventing the standard sections of the tower crane from loosening and causing the tower body to tilt and the center of the tower crane to shift, thereby avoiding the collapse of the tower crane.

[0022] In this embodiment, the surfaces of the folding plate 2 and the arm plate 1 are provided with knurling for increasing friction. The knurling can increase the friction between the folding plate 2 and the arm plate 1, ensure the stability of the device during use, and effectively prevent the connecting bolts 4 from loosening. The knurled folding plate 2 and the arm plate 1 are convenient for manual operation and can add a unique appearance effect to the workpiece.

[0023] In this embodiment, if Figure 1 As shown, the locking member 3 includes an upper clamp 303 and a lower clamp 304, and clamping bolts 305 are respectively passed through both ends of the upper clamp 303 and the lower clamp 304, and the clamping bolts 305 are connected to the clamping nut 301 to tighten the upper clamp 303 and the lower clamp 304, thereby clamping the tower crane nut. By clamping the two tower crane nuts, the tower crane nut is prevented from loosening.

[0024] In this embodiment, in order to improve the flexibility of the locking member 3, as shown in FIG. Figure 5 As shown, one of the clamping bolts 305 passes through the waist-shaped hole 6 on the arm plate 1, so that the locking member 3 rotates around the clamping bolt 305, and the locking member 3 can move relatively along the direction of the arm plate 1. This structure reduces the overall weight of the device.

[0025] In this embodiment, in order to improve the flexibility of the locking member 3, as shown in FIG. Figure 4 As shown, one of the clamping bolts 305 passes through the connecting hole 8 opened on the arm plate 1, so that the locking member 3 rotates around the clamping bolt 305. This structure improves stability during use.

[0026] In this embodiment, in order to improve the efficiency of the locking member 3, as shown in FIG. Figure 1 As shown, an adjusting cylinder 302 sleeved on one of the clamping bolts 305 is installed between the upper clamp 303 and the lower clamp 304, and the tower crane nut is quickly clamped by the adjusting cylinder 302.

[0027] In this embodiment, in order to improve the clamping force of the upper clamp 303 and the lower clamp 304 on the tower crane nut, knurling is provided on the surface of the upper clamp 303 and the lower clamp 304 in the area where the tower crane nut is clamped.

[0028] In this embodiment, if Figure 3 As shown, both sides of the folding plate 2 are connected to side plates 7 respectively, so that the arm plate 1 moves between the side plates 7 along the axial direction of the folding plate 2.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tower crane bolt anti-loosening device, characterized in that: The invention comprises a folding plate (2) and an arm plate (1), wherein waist-shaped holes (6) are respectively axially opened on the folding plate (2) and the arm plate (1), and connecting bolts (4) are inserted into the waist-shaped holes (6) on the folding plate (2) and the waist-shaped holes (6) on the arm plate (1) at the same time, and the connecting bolts (4) are connected to the connecting nuts (5), and the free end of the arm plate (1) is connected to the locking member (3).

2. A tower crane bolt anti-loosening device according to claim 1, characterized in that: The surfaces of the folding plate (2) and the arm plate (1) are both provided with knurling for increasing friction.

3. The tower crane bolt anti-loosening device according to claim 1, characterized in that: The locking member (3) comprises an upper clamp (303) and a lower clamp (304), and clamping bolts (305) are respectively provided at both ends of the upper clamp (303) and the lower clamp (304), and the clamping bolts (305) are connected to the clamping nuts (301) to tighten the upper clamp (303) and the lower clamp (304).

4. A tower crane bolt anti-loosening device according to claim 3, characterized in that: One of the clamping bolts (305) passes through the waist-shaped hole (6) on the arm plate (1).

5. The tower crane bolt anti-loosening device according to claim 3, characterized in that: One of the clamping bolts (305) passes through a connection hole (8) provided on the arm plate (1).

6. The tower crane bolt anti-loosening device according to claim 3, characterized in that: An adjustment cylinder (302) sleeved on one of the clamping bolts (305) is installed between the upper clamp (303) and the lower clamp (304).

7. The tower crane bolt anti-loosening device according to claim 3, characterized in that: Knurling is provided on the surfaces of the upper clamp (303) and the lower clamp (304) in the area where the tower crane nut is clamped.

8. The tower crane bolt anti-loosening device according to claim 1, characterized in that: Both sides of the folding plate (2) are respectively connected to side plates (7).

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