A tower crane anti-loosening warning bolt

Abstract

The utility model provides a tower crane anti-loosening warning bolt, which is provided with a sound and light alarm device at the upper part, and is connected to the warning nut at the lower part through a compression spring. The upper end of the compression spring is connected to a battery pack. During normal use, a gap is left between the battery pack and the sound and light alarm device, so that the sound and light alarm device cannot be powered and no alarm occurs. The fastening bolt is tightly connected to the connecting block through the fastening nut and the warning nut. Once the fastening bolt loosens and falls off, the applied force will decrease until it disappears completely, and the fastening nut, the warning nut and the connecting block gradually become a clearance fit, which will apply an upward force to the compression spring, thereby causing the battery pack to contact the sound and light alarm device and power it to generate an alarm to prompt relevant personnel, thereby eliminating safety hazards in a timely manner, greatly improving the safety of the present application, and being suitable for large-scale use and promotion in industry.

Description

Technical Field

[0001] The utility model belongs to the field of construction engineering safety, and particularly relates to an anti-loosening warning bolt for a tower crane. Background Art

[0002] Nowadays, there are various types of vertical transportation equipment at construction sites. Tower cranes (hereinafter referred to as tower cranes) are indispensable large-scale mechanical equipment for vertical transportation. They greatly improve the vertical transportation efficiency and speed up the construction progress during construction. However, despite these advantages, tower cranes themselves also have certain safety hazards. Due to their high risk factor, high-strength bolts are often used between the connecting blocks of standard sections to increase their height to meet the use requirements of the construction site.

[0003] In the process of tower crane installation, the fastening bolts in the prior art need to be placed with the bolt head facing downward and the bolt body facing upward in accordance with the installation specifications to prevent the bolts from loosening and falling off, thus eliminating the potential safety hazard of equipment operation. Although this measure ensures safety to a certain extent, the fastening bolts are still prone to loosening during long-term use, which may lead to potential safety hazards in the entire device. Once loosened, it is often difficult to detect in time, and in more serious cases, it may even cause the bolts to fall off. In particular, it is more difficult to detect the bolts falling off during nighttime operations, which poses a great safety hazard. Utility Model Content

[0004] The utility model aims to provide a tower crane anti-loosening warning bolt to solve the problem that the fastening bolts in the prior art are prone to loosening or even falling off during long-term use, causing safety hazards.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A tower crane anti-loosening warning bolt comprises a connecting piece for connecting two tower crane standard sections; the connecting piece comprises two connecting blocks matched up and down, and vertical threaded holes are provided at corresponding positions of the two connecting blocks; a fastening bolt matching the threaded hole can be inserted into the connecting piece from below, and the fastening bolt body is higher than the upper end surface of the connecting piece;

[0007] The fastening bolt body is provided with at least one fastening nut and one warning nut in sequence from bottom to top; the sum of the heights of all the fastening nuts and warning nuts is equal to the height of the fastening bolt body extending out of the upper end surface of the connecting piece;

[0008] The top of the warning nut is connected to the battery pack through a compression spring; an audible and visual alarm device is arranged above the battery pack; when the battery pack and the audible and visual alarm device are attached to each other, they can supply power to the audible and visual alarm device;

[0009] When the fastening bolt is fastened to the connecting piece, a gap is left between the battery pack and the sound and light alarm device; when the connection between the fastening bolt and the connecting piece is loosened, the battery pack fits the sound and light alarm device.

[0010] The utility model also has the following features:

[0011] Furthermore, the fastening bolt body is provided with two fastening nuts and a warning nut in sequence from bottom to top.

[0012] Furthermore, a gasket is provided at the connection between the fastening nut and the connecting block.

[0013] Further, it also includes a sleeve;

[0014] The fastening nut, warning nut and compression spring are all located inside the sleeve.

[0015] Furthermore, spring connecting pieces are provided at the connection points between the compression spring, the battery pack and the warning nut.

[0016] Furthermore, the sound and light alarm device is installed on the sleeve via a mounting seat, and the mounting seat is a hollow cylindrical structure and is coaxially connected to the sleeve;

[0017] The upper end of the mounting seat is provided with a mounting groove, and the sound and light alarm device is installed inside the mounting groove;

[0018] The battery pack is located inside the mounting seat.

[0019] Compared with the prior art, the utility model has the following technical effects:

[0020] The utility model of the tower crane anti-loosening warning bolt is provided with an audible and visual alarm device at the upper part, and is connected to the warning nut at the lower part through a compression spring. The upper end of the compression spring is connected to a battery pack, and a gap is left between the battery pack and the audible and visual alarm device during normal use, so that the audible and visual alarm device cannot be powered and an alarm will not occur.

[0021] In normal use, the fastening bolt is tightly connected to the connection block through the fastening nut and the warning nut. At this time, under the action of the fastening bolt, the fastening nut and the warning nut are exerted with downward force, and there is an interference fit between the two and the connection block. Once the fastening bolt loosens and falls off, the applied force will also decrease until it disappears completely, and the fastening nut, the warning nut and the connection block gradually become a clearance fit, which will exert an upward force on the compression spring, thereby causing the battery pack to contact the sound and light alarm device and supply power to it to generate an alarm to alert relevant personnel, eliminating safety hazards in a timely manner, greatly improving the safety of the application, and being suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of the tower crane anti-loosening warning bolt.

[0023] The meanings of the numbers in the figure are: 1. Fastening bolt; 2. Fastening nut; 3. Warning nut; 4. Compression spring; 5. Battery pack; 6. Sound and light alarm device; 7. Gasket; 8. Sleeve; 9. Spring connecting piece; 10. Mounting seat. DETAILED DESCRIPTION

[0024] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art. For example, the sound and light alarm device is a known and commonly used sound and light alarm device.

[0025] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0026] like Figure 1 As shown, a tower crane anti-loosening warning bolt includes a connecting piece for connecting two tower crane standard sections; the connecting piece includes two connecting blocks that are matched up and down, and through vertical threaded holes are opened at corresponding positions of the two connecting blocks; a fastening bolt 1 matching the threaded hole can be inserted into the connecting piece from below, and the bolt body of the fastening bolt 1 is higher than the upper end surface of the connecting piece.

[0027] The bolt body of the fastening bolt 1 is provided with at least one fastening nut 2 and one warning nut 3 in sequence from bottom to top; the sum of the heights of all the fastening nuts 2 and the warning nuts 3 is equal to the height of the bolt body of the fastening bolt 1 extending out of the upper end surface of the connecting piece.

[0028] The top of the warning nut 3 is connected to the battery pack 5 through a compression spring 4; an audible and visual alarm device 6 is arranged above the battery pack 5; when the battery pack 5 is in contact with the audible and visual alarm device 6, it can supply power to the audible and visual alarm device 6.

[0029] When the fastening bolt 1 is fastened to the connecting piece, a gap is left between the battery pack 5 and the sound and light alarm device 6; when the connection between the fastening bolt 1 and the connecting piece is loosened, the battery pack 5 and the sound and light alarm device 6 fit together.

[0030] The tower crane anti-loosening warning bolt of the utility model is provided with an audible and visual alarm device 6 at the upper part, and is connected to the warning nut 3 at the lower part through a compression spring 4. The upper end of the compression spring 4 is connected to a battery pack 5. In normal use, there is a gap between the battery pack 5 and the audible and visual alarm device 6, so that the audible and visual alarm device 6 cannot be powered and no alarm occurs.

[0031] During normal use, the sound and light alarm device 6 should be independently connected to the connecting block to ensure that when the fastening nut 2 and the warning nut 3 drive the compression spring 4 to move, the sound and light alarm device 6 will not move along with it, thereby ensuring that the battery pack 5 on the top of the compression spring 4 can contact the sound and light alarm device 6 normally.

[0032] The fastening bolt 1 is tightly connected to the connection block through the fastening nut 2 and the warning nut 3. At this time, under the action of the fastening bolt 1, the fastening nut 2 and the warning nut 3 are exerted with downward force, and there is an interference fit between the two and the connection block. Once the fastening bolt 1 is loosened and falls off, the applied force will also decrease until it disappears completely, and the fastening nut 2, the warning nut 3 and the connection block gradually become a clearance fit, which will apply an upward force to the compression spring 4, and then the battery pack 5 will contact the sound and light alarm device 6 and supply power to it to generate an alarm to remind relevant personnel, eliminate safety hazards in time, greatly improve the safety of this application, and is suitable for large-scale use and promotion in industry.

[0033] Specifically, the bolt body of the fastening bolt 1 is provided with two fastening nuts 2 and a warning nut 3 from bottom to top. This arrangement is suitable for most fastening bolts 1 currently in common use; those skilled in the art are capable of reasonably selecting the specifications of the fastening bolt 1, the fastening nut 2 and the warning nut 3 according to actual use requirements.

[0034] As a preferred solution, a gasket 7 is provided at the connection between the fastening nut 2 and the connecting block to enhance the stability of the connection between the two, reduce the wear caused by friction, and extend the service life.

[0035] As a preferred solution, it also includes a sleeve 8; the fastening nut 2, the warning nut 3 and the compression spring 4 are all located inside the sleeve 8. When in use, the sleeve 8 plays a role in protecting the compression spring 4 and extending the service life of the compression spring 4.

[0036] Furthermore, the sound and light alarm device 6 is mounted on the sleeve 8 via a mounting seat 10, and the mounting seat 10 is a hollow cylindrical structure and is coaxially connected to the sleeve 8;

[0037] The upper end of the mounting seat 10 is provided with a mounting groove, and the sound and light alarm device 6 is installed inside the mounting groove;

[0038] The battery pack 5 is located in the mounting seat 10. According to conventional selection, an end cover is provided at the upper end of the mounting seat 10, and a hole is opened in the middle of the end cover as a mounting slot, and the sound and light alarm device 6 is installed into the mounting slot and fixedly connected. The above design protects the battery pack 5 from special weather and prolongs the service life. Furthermore, a spring connecting piece 9 is provided at the connection between the compression spring 4 and the battery pack 5 and the warning nut 3. Strengthen the stability of the connection between the two, reduce the wear caused by friction, and prolong the service life.

Claims

1. A tower crane anti-loosening warning bolt, comprising a connecting piece for connecting two tower crane standard sections; characterized in that: The connecting piece comprises two connecting blocks matched up and down, and vertical threaded holes are provided at corresponding positions of the two connecting blocks; a fastening bolt (1) matching the threaded hole can be inserted into the connecting piece from below, and the bolt body of the fastening bolt (1) is higher than the upper end surface of the connecting piece; The bolt body of the fastening bolt (1) is provided with at least one fastening nut (2) and one warning nut (3) in sequence from bottom to top; the sum of the heights of all the fastening nuts (2) and the warning nuts (3) is equal to the height of the bolt body of the fastening bolt (1) protruding from the upper end surface of the connecting piece; The top of the warning nut (3) is connected to the battery pack (5) via a compression spring (4); an audible and visual alarm device (6) is arranged above the battery pack (5); when the battery pack (5) and the audible and visual alarm device (6) are in contact with each other, power can be supplied to the audible and visual alarm device (6); When the fastening bolt (1) is fastened to the connecting piece, a gap is left between the battery pack (5) and the sound and light alarm device (6); when the connection between the fastening bolt (1) and the connecting piece is loosened, the battery pack (5) and the sound and light alarm device (6) fit together.

2. The tower crane anti-loosening warning bolt according to claim 1, characterized in that: The bolt body of the fastening bolt (1) is provided with two fastening nuts (2) and a warning nut (3) in sequence from bottom to top.

3. The tower crane anti-loosening warning bolt according to claim 1, characterized in that: A gasket (7) is provided at the connection between the fastening nut (2) and the connecting block.

4. The tower crane anti-loosening warning bolt according to claim 1, characterized in that: Also includes a sleeve (8); The fastening nut (2), the warning nut (3) and the compression spring (4) are all located inside the sleeve (8).

5. The tower crane anti-loosening warning bolt according to claim 4, characterized in that: The connection points between the compression spring (4), the battery pack (5) and the warning nut (3) are all provided with spring connecting pieces (9).

6. The tower crane anti-loosening warning bolt according to claim 5, characterized in that: The sound and light alarm device (6) is mounted on the sleeve (8) via a mounting seat (10); the mounting seat (10) is a hollow cylindrical structure and is coaxially connected to the sleeve (8); The upper end of the mounting seat (10) is provided with a mounting groove, and the sound and light alarm device (6) is installed inside the mounting groove; The battery pack (5) is located inside the mounting seat (10).

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