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Double-nut propping and locking bolt

A technology of dead bolts and double nuts, which is applied in the direction of nuts, bolts, threaded fasteners, etc., and can solve problems such as easy loosening of bolts and fasteners

Pending Publication Date: 2019-05-03
TIANJIN SHENGLIDA MECHANICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to take advantage of technological advantages in the market competition to seize the opportunity, in view of the above problems, the applicant organized technical personnel to carry out technical research in order to solve the problem that the bolts and fasteners are easy to loosen

Method used

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  • Double-nut propping and locking bolt
  • Double-nut propping and locking bolt
  • Double-nut propping and locking bolt

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] The double nuts of the present invention are pressed against the locking bolts, such as Figures 1 to 3 As shown, it includes a screw rod 1 and a nut 2. There are two nuts 2. A cylindrical sleeve 6 is radially fixed on one end surface of the nut 2. The end of the sleeve 6 forms a tapered lock edge 7 along the The locking edge 7 points to the direction of the nut 2, and the diameter of the outer circle corresponding to the outer surface of the locking edge 7 gradually increases from small to large. The inner hole diameter is larger than the nut 2 screw hole diameter;

[0022] The wall thickness of the sleeve 6 is smaller than that of the nut 2 .

[0023] The working principle of...

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Abstract

The invention provides a double-nut propping and locking bolt. The double-nut propping and locking bolt includes a screw and two nuts, a cylindrical sleeve is fixedly arranged on the end face of one side of each nut in the radial direction, a cone locking edge is formed in the end of each sleeve, each sleeve faces the corresponding nut along the corresponding locking edge, the outer diameter of the corresponding outer side face of each locking edge is gradually larger, inner holes of the sleeves and thread holes of the nuts are arranged coaxially, the inner holes of the sleeves are light holes, and the inner hole diameter of the sleeves is greater than the thread hole diameter of the nuts; and the wall thickness of the sleeves is less than the nut wall thickness. The double-nut propping and locking bolt uses the locking edges on the two nut sleeves to squeeze each other, as the thickness of edges of the locking edges is smallest, under the squeezing pressure, the edges of the locking edges are likely to deform, the edges of the locking edges bend towards the screw until the edges of the locking edge is buckled in a thread gap in the screw, so that the nuts are fixed on the screw, the occurrence of looseness cannot be caused due to the influence of external forces, and the purpose of locking and anti-loosing is achieved.

Description

technical field [0001] The invention relates to the field of fasteners for mechanical equipment, in particular to a double nut against a locking bolt. Background technique [0002] The assembly process of mechanical equipment from parts to complete machine is inseparable from the close fit of fasteners. Bolt fasteners are the most widely used form of fasteners. In various links such as equipment transportation and operation, due to the influence of external forces such as vibration, bolt fasteners will be instantly damaged due to the pressure between the interlocking threads. The disappearance makes the friction between the threads zero, so that the threaded connection becomes loose or even falls off, which affects the normal performance of the equipment and even causes the equipment to fail. Therefore, the anti-loosening and anti-loosening of bolt fasteners has always been a technical problem that practitioners in the field need to solve urgently. [0003] In order to tak...

Claims

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Application Information

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IPC IPC(8): F16B39/12F16B37/00
Inventor 杨铁良陈超王宇
Owner TIANJIN SHENGLIDA MECHANICAL EQUIP CO LTD
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