CN219587943U - Lock bolt for connecting electric iron tower - Google Patents

Abstract

The utility model discloses a lockbolt for connecting an electric iron tower, which comprises a bolt piece for connecting angle steel of the electric iron tower, wherein the bolt piece comprises a bolt column and a bolt head, a first thread section, a second thread section and a third thread section are sequentially arranged on the bolt column from top to bottom, the second thread section is opposite to the first thread section and the third thread section in thread direction, the bolt column penetrates through the angle steel to enable the first thread section to be in threaded connection with the angle steel, a fastening nut is in threaded connection with the second thread section, a locknut is in threaded connection with the third thread section, a connecting sleeve is sleeved outside the fastening nut and the locknut, and the connecting sleeve, the fastening nut and the locknut are fixedly connected through a locating pin. Through the mode, the lockbolt for the electric power iron tower is used for connecting the lockbolt of the electric power iron tower, the nuts are directly fixedly connected through the threads with the multi-section threads in the screwing direction, and the problem of connection strength caused by independent loosening of the nuts is avoided.

Description

Lock bolt for connecting electric iron tower

Technical Field

The utility model relates to the field of electric power iron towers, in particular to a check bolt for connecting an electric power iron tower.

Background

The bolt connection is used for connecting two or more components, is simple in use and various in variety, and is widely applied to the fields of machinery industry, power industry and the like. There are various failure modes of bolting, for example, extrusion failure of the bolt for reaming due to shearing force; the common bolt is connected to cause the bolt rod to stretch after being subjected to excessive tension, and the thread pair is subjected to excessive pressure to cause crushing; under the action of cyclic load, fatigue cracks and even fracture of the bolts caused by alternating stress cause the reduction of the clamping force of the connection so as to loosen and loosen the connection, and the like.

Along with the acceleration construction of the extra-high voltage power grid in China, the use amount of the electric power iron tower is increased in multiple, and the connection reliability requirement of the tower body components is higher. The existing bolt connecting piece is difficult to ensure effective connection strength after being used in a severe field environment for a long time, and the bolt is possibly damaged due to rust, corrosion and the like, so that the connection strength of the electric power iron tower is not effectively ensured.

Disclosure of Invention

The utility model mainly solves the technical problem of providing a lockbolt for connecting an electric iron tower, which locks through threads of a multi-section thread turning direction, directly fixedly connects a plurality of nuts and avoids the problem of connection strength caused by independent loosening of each nut.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a lockbolt for connecting electric power iron tower, including the bolt piece of the angle steel of connecting electric power iron tower, the bolt piece includes bolt post and bolt head, from the top down has set gradually first screw thread section, second screw thread section and third screw thread section on the bolt post, the screw thread opposite direction of second screw thread section and first screw thread section and third screw thread section, the bolt post passes the angle steel and makes first screw thread section and angle steel threaded connection, threaded connection has fastening nut on the second screw thread section, threaded connection has locknut on the third screw thread section, fastening nut and locknut outside cover are equipped with the adapter sleeve, through locating pin fixed connection between adapter sleeve, fastening nut and the locknut.

In a preferred embodiment of the present utility model, the bolt post includes a first post, a second post and a third post, the first thread section, the second thread section and the third thread section are respectively disposed on the first post, the second post and the third post, and the diameters of the first post, the second post and the third post are sequentially reduced.

In a preferred embodiment of the present utility model, a smooth section is further provided between the first thread section and the bolt head, and a buffer washer is sleeved on the smooth section, and the buffer washer is located between the bolt head and the angle steel.

In a preferred embodiment of the present utility model, the connecting sleeve, the fastening nut and the locknut are provided with aligned positioning holes, and the positioning holes are arranged obliquely to the vertical direction.

In a preferred embodiment of the utility model, the upper end of the connecting sleeve is flush with the upper end of the fastening nut and is tightly attached to the angle steel, and the lower end of the connecting sleeve is sleeved on the lower end face of the locknut.

In a preferred embodiment of the utility model, at least one circle of locking teeth are arranged on the circumference of the fastening nut and the locknut, and tooth grooves matched with the locking teeth are formed in the connecting sleeve.

In a preferred embodiment of the utility model, the fastening nut and the locknut have the same outer diameter.

The beneficial effects of the utility model are as follows: the locking bolt for connecting the electric iron tower is connected with the angle steel through the first thread section, the second thread section and the third thread section are correspondingly connected with the nuts, the second thread section adopts the opposite thread direction to the first thread section and the third thread section, the locking effect is good, and the problem of the locking effect of the bolt caused by loosening of a certain thread section is avoided.

The lockbolt for connecting the electric iron tower is integrally connected through the fastening nut, the locknut and the connecting sleeve through the machinery, and the connecting sleeve plays a role in protecting the outer side, so that the fastening nut, the locknut, the second thread section and the third thread section are prevented from being corroded, the service life is prolonged, and the condition that the fastening nut or the locknut is loose singly and the connecting strength is insufficient is avoided.

The anti-loose bolt for connecting the electric iron tower has the advantages that the three-section variable-diameter cylinder is convenient for the whole quick installation of the bolt, and the installation difficulty is reduced.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

the components in the drawings are marked as follows: 1. the bolt column, 11, first screw thread section, 12, second screw thread section, 13, third screw thread section, 14, first cylinder, 15, second cylinder, 16, third cylinder, 17, buffer washer, 2, bolt head, 3, fastening nut, 31, locking tooth, 4, locknut, 5, adapter sleeve, 51, locating pin, 52, tooth socket, 6, angle steel.

Description of the embodiments

The technical solutions in the embodiments of the present utility model will be clearly and completely described below. The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective. Also, the terms "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the utility model for modification or adjustment of the relative relationships thereof, as they are also considered within the scope of the utility model without substantial modification to the technical context.

Referring to fig. 1 and 2, a lockbolt for connecting to a power pylon includes a bolt member for connecting to angle 6 of the power pylon. The bolt piece comprises a bolt stud 1 and a bolt head 2. The first thread section 11, the second thread section 12 and the third thread section 13 are sequentially arranged on the bolt column 1 from top to bottom. The bolt column 1 comprises a first column body 14, a second column body 15 and a third column body 16, wherein a first thread section 11, a second thread section 12 and a third thread section 13 are respectively arranged on the first column body 14, the second column body 15 and the third column body 16, and the diameters of the first column body 14, the second column body 15 and the third column body 16 are sequentially reduced. Three cylinders with diameters reduced in sequence are convenient for the bolt column 1 to penetrate through the angle steel 6 and be in threaded connection with the angle steel 6, assembly connection of the follow-up fastening nut 3 and the locknut 4 is also convenient, the situation that threaded connection is difficult to occur when reasonable size matching avoids assembly is also convenient to maintain in the later period.

The bolt post 1 passes through the angle steel 6 to enable the first threaded section 11 to be in threaded connection with the angle steel 6, a smooth section is further arranged between the first threaded section 11 and the bolt head 2, a buffer washer 17 is sleeved on the smooth section, and the buffer washer 17 is positioned between the bolt head and the angle steel 6. The buffer washer 17 can avoid the extrusion of the angle steel 6 and the bolt head 2 due to the large axial force generated when the fastening nut 3 and the lockbolt are installed at the later stage, and prevent the damage of the components.

The second thread section 12 is in threaded connection with a fastening nut 3, the third thread section 13 is in threaded connection with a locknut 4, and the outer diameters of the fastening nut 3 and the locknut 4 are the same. The second thread segments 12 are in the opposite thread direction to the first thread segments 11 and the third thread segments 13. The first thread segment 11 and the third thread segment 13 are positive threads, and the second thread segment 12 is reverse threads, and vice versa. It is only necessary to ensure that the second thread segments 12 are in the opposite direction to the first thread segments 11 and the third thread segments 13. In the case of the second thread segment 12 and the third thread segment 13 having opposite directions, the fastening nut 3 and the locknut 4 can prevent the bolt from being loosened, and have a good locking effect.

Alignment positioning holes are formed in the connecting sleeve 5, the fastening nut 3 and the locknut 4, and the positioning holes are obliquely arranged with the vertical direction. The upper end of the connecting sleeve 5 is flush with the upper end of the fastening nut 3 and is tightly attached to the angle steel 6, and the lower end of the connecting sleeve is sleeved on the lower end face of the locknut 4. The outside of the fastening nut 3 and the locknut 4 is sleeved with a connecting sleeve 5, and the connecting sleeve 5, the fastening nut 3 and the locknut 4 are fixedly connected through a locating pin 51. The connecting sleeve 5 is sleeved outside the fastening nut 3 and the locknut 4 and is integrally connected with the fastening nut 3 and the locknut 4 through the locating pin 51, anti-corrosion and rust-proof treatment can be carried out on the outer portion of the connecting sleeve 5, the fastening nut 3, the loosening nut and the internal thread section are protected, the fastening nut 3 and the locknut 4 are taken as a whole, no matter if the connecting sleeve 5 is rotated, the fastening nut 3 and the locknut 4 are not loosened, and the locking effect is further improved.

At least one circle of locking teeth 31 are arranged on the circumferences of the fastening nut 3 and the locknut 4, and tooth grooves 52 matched with the locking teeth 31 are formed in the connecting sleeve 5. The locking teeth 31 and the tooth grooves 52 further improve the locking structure and prevent the connecting sleeve 5 from being loosened from the fastening nut 3 and the locknut 4.

Compared with the prior art, the lockbolt for the electric power iron tower is used for connecting the lockbolt of the electric power iron tower, is locked through the threads of the multi-section thread turning direction, and is used for directly fixedly connecting a plurality of nuts, so that the problem of connection strength caused by independent loosening of each nut is avoided.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (7)

1. A lockbolt for connecting electric power iron tower, its characterized in that, including the bolt piece of the angle steel of connecting electric power iron tower, the bolt piece includes bolt post and bolt head, from the top down has set gradually first screw thread section, second screw thread section and third screw thread section on the bolt post, the screw thread opposite direction of second screw thread section and first screw thread section and third screw thread section, the bolt post passes the angle steel and makes first screw thread section and angle steel threaded connection, threaded connection has fastening nut on the second screw thread section, threaded connection has locknut on the third screw thread section, fastening nut and locknut outside cover are equipped with the adapter sleeve, through locating pin fixed connection between adapter sleeve, fastening nut and the locknut.

2. The lockbolt for connecting a power pylon according to claim 1, wherein the bolt post comprises a first post, a second post and a third post, the first threaded section, the second threaded section and the third threaded section are disposed on the first post, the second post and the third post, respectively, and the diameters of the first post, the second post and the third post decrease in sequence.

3. The lockbolt for connecting a power pylon according to claim 2, wherein a smooth section is further provided between the first threaded section and the bolt head, and a buffer washer is provided over the smooth section, the buffer washer being located between the bolt head and the angle steel.

4. A lockbolt for connecting an electric iron tower according to any one of claims 1-3, wherein the connecting sleeve, the fastening nut and the locknut are provided with aligned positioning holes, and the positioning holes are inclined to the vertical direction.

5. The lockbolt for connecting a power pylon according to claim 4, wherein the upper end of the connecting sleeve is flush with the upper end of the fastening nut and is tightly attached to the angle steel, and the lower end is sleeved on the lower end surface of the locknut.

6. The lockbolt for connecting a power tower according to claim 5, wherein the fastening nut and the locknut are provided with at least one circle of locking teeth in the circumferential direction, and tooth grooves matched with the locking teeth are formed in the connecting sleeve.

7. The lockbolt for connecting to a power pylon of claim 6 wherein the outer diameters of the locknut and locknut are the same.