Elastic device for preventing tower crane standard knot connecting bolt and nut from loosening

Abstract

The utility model relates to the field of preventing a tower crane standard knot connecting bolt nut from loosening, in particular to an elastic device for preventing the tower crane standard knot connecting bolt nut from loosening, which comprises a box cover, a hexagon nut lantern ring and a spring piece, compared with the prior art, the device has the advantages that the structure is simple, the device is composed of the metal box cover, the spring piece on the side face of the box cover and the hexagonal nut lantern ring in the box cover, external force in the fastening direction is applied to the nut after elastic force limiting, and therefore the nut is prevented from loosening, and the device is suitable for being connected with the tower crane standard knot and has a wide application prospect. The nut is prevented from loosening in a bolt and nut connection mode.

Description

Technical Field

[0001] The utility model relates to the field of preventing the nuts of the connecting bolts of tower crane standard sections from loosening, and specifically refers to an elastic device for preventing the nuts of the connecting bolts of tower crane standard sections from loosening. Background Art

[0002] Tower cranes (hereinafter referred to as "tower cranes") play an important role in modern engineering construction. Especially with the development of the construction industry, they are an indispensable important tool in the construction process. As an important vertical transportation tool for transporting goods in construction, the safety of tower cranes is often the top priority of the safety management work of the entire project. During operation, tower cranes are often subjected to vibration, impact, and variable loads, and the friction between the thread slopes in the bolt connection may disappear or decrease instantaneously. The repeated occurrence of this phenomenon will gradually loosen the connection, affecting the rigidity and tightness of the connection. If not discovered in time, it is very likely that the bolts will fall off, causing major safety hazards.

[0003] In the past, there was no anti-loosening device for the screws and nuts connecting the tower crane standard sections. During the installation of the tower crane, the nuts were tightened with a wrench, but during use, the nuts were easily loosened due to vibrations and other reasons, resulting in accidents. Therefore, an elastic device for preventing the nuts of the connecting bolts of tower crane standard sections from loosening is needed. Content of the Utility Model

[0004] I. Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is that the nuts of the tower crane become loose due to vibrations and other reasons during use, so as to prevent the tower crane from tipping over and collapsing, resulting in casualties.

[0006] II. Technical Solutions

[0007] To solve the above technical problems, the technical solution provided by the utility model is: an elastic device for preventing the nuts of the connecting bolts of tower crane standard sections from loosening, including a box cover.

[0008] A hexagonal nut sleeve ring is connected and arranged inside the box cover, and a spring piece is connected and arranged outside the box cover.

[0009] Furthermore, the box cover is arranged in a cylindrical sleeve structure. The cylindrical appearance is convenient for carrying the device and tightening and fixing the nut on the bolt of the tower crane standard section. The top end of the box cover is arranged in a closed state, making the device appear as a whole from the perspective of appearance, and can prevent dust and rain from falling into the inside of the box cover to a certain extent, affecting the bolt and nut fixing structure on the tower crane standard section and the hexagonal nut sleeve ring inside the device. The bottom end of the box cover is arranged in an open state, facilitating the device to be snapped onto the tower crane standard section from above.

[0010] Furthermore, the hexagonal nut sleeve layer is arranged in a regular hexagonal shape, and the internal regular hexagon is arranged to match the nut on the tower crane standard section, facilitating a tighter subsequent clamping operation. The outer sharp corner part of the hexagonal nut sleeve is connected to the inner wall of the box cover, and the connection is fixed to each other by welding. The height of the hexagonal nut sleeve is set to be less than the height of the box cover, which can enable the box cover to provide a certain protection effect on the hexagonal nut sleeve.

[0011] Furthermore, one side of the spring piece is connected to the outer side of the box cover, and the two are connected into a whole by welding. The width of the spring piece is set to be less than the height of the hexagonal nut sleeve. The position where the box cover is higher than the spring piece is exactly convenient for subsequent screwing of the device for installation.

[0012] III. Beneficial Effects

[0013] The advantages of the present utility model compared with the prior art are as follows: The device structure in this product is simple, consisting of a metal box cover, a spring piece on the side of the box cover, and a hexagonal nut sleeve inside the box cover. After being limited by elastic force, an external force in the tightening direction is applied to the nut, thereby preventing the nut from loosening. It is applicable to connecting the tower crane standard section and preventing the nut from loosening in the way of connecting with bolts and nuts. Brief Description of the Drawings

[0014] Figure 1 is the external structure schematic diagram of an elastic device for preventing the connection bolts and nuts of the tower crane standard section from loosening in the present utility model Figure 1 。

[0015] Figure 2 is the external structure schematic diagram of an elastic device for preventing the connection bolts and nuts of the tower crane standard section from loosening in the present utility model Figure 2 。

[0016] Figure 3 is the external structure schematic diagram of an elastic device for preventing the connection bolts and nuts of the tower crane standard section from loosening in the present utility model Figure 3 。

[0017] Figure 4 is the internal structure schematic diagram of an elastic device for preventing the connection bolts and nuts of the tower crane standard section from loosening in the present utility model.

[0018] As shown in the figure: 1. Box cover, 2. Hexagonal nut sleeve, 3. Spring piece. Specific Embodiment

[0019] The following further elaborates on the present utility model in conjunction with the drawings.

[0020] Embodiment 1

[0021] Combined with the attached Figures 1-4, To solve the above technical problems, the technical solution provided by the present utility model is: an elastic device for preventing the nuts of the connecting bolts of the tower crane standard section from loosening, including a box cover 1. A hexagonal nut sleeve 2 is connected and arranged inside the box cover 1. A spring piece 3 is connected and arranged outside the box cover 1. The box cover 1 is arranged in a cylindrical sleeve structure. The cylindrical appearance is convenient for carrying the device and tightening the nut on the bolt of the tower crane standard section. The top end of the box cover 1 is arranged in a closed state, making the device appear as a whole from the perspective of appearance, and can prevent dust and rain from falling into the inside of the box cover 1 to a certain extent, affecting the bolt nut fixing structure on the tower crane standard section and the hexagonal nut sleeve 2 inside the device. The bottom end of the box cover 1 is arranged in an open state, facilitating the device to be snapped onto the tower crane standard section from above.

[0022] The box cover 1 provides a base-like foundation for the device, serving as a connecting seat for connecting two important components and facilitating control to install the device on the tower crane standard section.

[0023] Embodiment 2

[0024] Combined with the attached Figures 3-4 , The hexagonal nut sleeve 2 is arranged in a regular hexagon shape. The internal regular hexagon setting matches the nut on the tower crane standard section, facilitating a tighter subsequent snapping operation. The outer corner part of the hexagonal nut sleeve 2 is connected to the inner wall of the box cover 1, and the connection is fixed to each other by welding. The height of the hexagonal nut sleeve 2 is set to be less than the height of the box cover 1, which can enable the box cover 1 to provide a certain protection effect on the hexagonal nut sleeve 2. One side of the spring piece 3 is connected to the outside of the box cover 1, and the two are connected into a whole by welding. The width of the spring piece 3 is set to be less than the height of the hexagonal nut sleeve 2. The position where the box cover 1 is higher than the spring piece 3 is exactly convenient for subsequent screwing of the device for installation.

[0025] Through the hexagonal nut sleeve 2, it can just be sleeved on the tower crane nut, and the device is fixed to the nut on the tower crane standard section by snapping, thus realizing the integral connection between the device and the nut. During use, they are stressed together and locked together on the bolt of the tower crane standard section. The spring piece 3 plays a role of clamping and fixing after being stressed. During use, the end of the spring piece 3 far from the box cover 1 closely adheres to the tower crane standard section to make it stressed, which applies an external force in the tightening direction to the nut used for fixing on the tower crane standard section, thereby preventing the nut from loosening.

[0026] When the utility model is specifically implemented and the device is used, after the nut has been fixed on the bolt of the tower crane standard section, that is, after the tower crane is installed, the device is installed on the threaded fixing structure of the tower crane standard section. During installation, the circular metal cover is placed over the tower crane nut, and the spring piece 3 is closely attached to the tower crane standard section. Then, the metal box cover 1 is rotated counterclockwise with force to make the spring piece 3 bear force. After being stressed, the metal box cover 1 is pressed downward, so that the hexagonal socket ring inside the cover is sleeved on the nut, thus applying an external force in the tightening direction to the nut and preventing the nut from loosening.

[0027] The above description of the utility model and its implementation manner is not restrictive. What is shown in the drawings is only one of the implementation manners of the utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural forms and embodiments to this technical solution without creative efforts without departing from the creative purpose of the utility model, they shall fall within the protection scope of the utility model.

Claims

1. An elastic device for preventing the nuts and bolts of a tower crane standard section from loosening, comprising a box cover (1), characterized in that: The box cover (1) is internally connected to a hexagonal nut collar (2), and the box cover (1) is externally connected to a spring sheet (3).

2. According to claim 1, an elastic device for preventing the nuts and bolts of the tower crane standard section from loosening, characterized in that: The box cover (1) is arranged in a cylindrical sleeve structure, the top end of the box cover (1) is arranged in a closed state, and the bottom end of the box cover (1) is arranged in an open state.

3. The elastic device for preventing the nuts and bolts of the tower crane standard section from loosening according to claim 1 is characterized in that: The hexagonal nut collar (2) is arranged in a regular hexagonal shape, the outer sharp corner of the hexagonal nut collar (2) is connected to the inner wall of the box cover (1), and the height of the hexagonal nut collar (2) is smaller than the height of the box cover (1).

4. The elastic device for preventing the nuts and bolts of the tower crane standard section from loosening according to claim 1, characterized in that: One side of the spring sheet (3) is connected to the outer side of the box cover (1), and the width of the spring sheet (3) is smaller than the height of the hexagonal nut collar (2).

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