CN115013416A

CN115013416A - Tension adjusting bolt

Info

Publication number: CN115013416A
Application number: CN202210702705.2A
Authority: CN
Inventors: 朱汉华; 朱银奎
Original assignee: Jiangsu Yonghao High Strength Bolt Co ltd
Current assignee: Jiangsu Yonghao High Strength Bolt Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-09-06
Anticipated expiration: 2042-06-21

Abstract

The invention discloses a tension adjusting bolt which comprises two adjusting shells, two fixing nuts, two pull rods, two adjusting nuts, an arc-shaped sealing plate, a locking mechanism and a limiting slot, wherein the pull rods are simultaneously in threaded connection with the fixing nuts and the adjusting nuts, the locking mechanism arranged on the adjusting shells is adopted to prevent the adjusting nuts from rotating, and an anti-slip block at the front end of each pull rod is attached to the corresponding pull rod by extruding an inserted rod, so that the connection stability between the pull rods and an adjusting cylinder is ensured, and the tension adjusting lock bolts can keep the tensioning effect.

Description

Tension adjusting bolt

Technical Field

The invention relates to a tension adjusting bolt, and belongs to the field of bolts.

Background

The tension adjusting bolt consists of an adjusting rod with a left-hand thread and a right-hand thread, a nut and a pull rod, the pull rod is stretched to adjust the tightness of the connecting rope, and the components can be bound or connected in component transportation. However, after the existing tension adjusting bolt is used for a certain time, the influence of long-time tension is caused, and the connection part of the pull rod and the nut is easy to loosen, so that the connection and the loosening are easy to cause in the subsequent use, and further, accidents can be caused.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the tension adjusting bolt, which improves the connecting effect of the pull rod and the adjusting cylinder through the adjusting nut and the locking mechanism and ensures the connecting effect of the tension adjusting bolt.

The technical scheme adopted by the invention is as follows:

a tension adjusting bolt comprising:

the two adjusting shells are semi-cylindrical, corresponding notches are formed in the two sides of each adjusting shell, and the two adjusting shells form an adjusting cylinder after being assembled;

the two fixing nuts are arranged at the centers of the two ends of the adjusting cylinder, and the internal threads of the two fixing nuts are opposite in turning direction;

one ends, close to each other, of the two pull rods are respectively screwed in the fixing nuts at the two ends of the adjusting cylinder, and drag hooks are arranged at the ends, far away from each other, of the two pull rods;

the two adjusting nuts are screwed in the cylinders at the two ends of the adjusting cylinder, internal thread grooves matched with the external threads of the adjusting nuts are arranged in the cylinders at the two ends of the two adjusting shells of the adjusting cylinder, and one ends of the pull rods, which are close to each other, penetrate through the corresponding adjusting nuts and are in threaded connection with the adjusting nuts;

the arc-shaped sealing plates are embedded at two ends of the two adjusting shells and respectively arranged corresponding to the thread inner grooves, a fixture block slideway and a moving rod slideway which are communicated with each other are sequentially and horizontally arranged between the arc-shaped sealing plates and the thread inner grooves from inside to outside, and a push block slideway which is communicated with the moving rod slideway is also arranged on the arc-shaped sealing plates;

the locking mechanism comprises a push block mutually attached to the outer wall of the arc-shaped sealing plate, a moving rod arranged in a moving rod slide way in a sliding mode and a fixture block arranged in a thread inner groove in a sliding mode, the push block is connected with a rod body of the moving rod through a connecting block arranged in the push block slide way in a sliding mode, the moving rod is connected with the side wall of one end, close to the end portion of the adjusting barrel, of the fixture block through a connecting column, and a first spring is fixedly arranged at one end, close to the end portion of the adjusting barrel, of the moving rod slide way;

the limiting slot is uniformly arranged on the outer edge of one end, close to the end part of the adjusting cylinder, of the adjusting nut in a surrounding mode, and the first spring pushes the moving rod to move towards one side, away from the end part of the adjusting cylinder, of the moving rod to drive the fixture block to be inserted into the corresponding limiting slot.

As a preferred mode of the invention, a sunken groove which is of a convex structure and is communicated with a central threaded hole of the adjusting nut is further arranged in each limiting slot, an inserting rod is arranged in the sunken groove, a deformable anti-skidding block is arranged at the front end of the inserting rod, a limiting ring which is mutually attached to the inner wall of a large-caliber slotted hole of the sunken groove and is arranged in a sliding mode is arranged on the inserting rod, a second spring is sleeved on the inserting rod which is arranged at the front end of the limiting ring and at the rear end of a small-caliber section of the sunken groove, a plug is arranged in the sunken groove which is arranged at the rear end of the limiting ring, the rear end of the inserting rod penetrates through the plug and extends into the limiting slots, an inclined surface which faces the side end of the adjusting cylinder is formed at the end part of the inserting rod which is arranged in the limiting slots, and an inclined surface which is engaged with the end part of the inserting rod is arranged at one end of the clamping block which is inserted into the limiting slots.

As one preferable preference of the invention, limit nuts are screwed at the ends of the two pull rods close to each other.

Preferably, the two adjustment cases are assembled by a bolt assembly, wherein corresponding lugs are formed on one wall body where the two adjustment cases are attached to each other, and corresponding bolt holes are formed in the lugs.

Preferably, the anti-skid block is made of rubber.

As one preferable aspect of the present invention, a locking spring is sleeved on the rod body of the pull rod located in the adjusting nut and the corresponding adjusting cylinder.

Preferably, a thrust bearing is arranged at one end of the locking spring, which is close to the adjusting cylinder, and the thrust bearing is sleeved outside the fixing nut and connected with an inner end face of one of the adjusting shells.

The invention has the beneficial effects that:

1. the pull rod is simultaneously in threaded connection with the fixing nut and the adjusting nut, so that the possibility of loosening of the pull rod and the adjusting cylinder can be reduced; and the adjusting nut is locked by the locking mechanism to prevent the adjusting nut from rotating, so that the adjusting nut can be further prevented from rotating after the thread of the pull rod and the fixed nut fails to work, and the pull rod is caused to move along with the pull rod to cause negative effects on the connecting effect

2. The fixture block inserts and will extrude the inserted bar in the spacing slot and remove towards adjusting nut's centre bore, makes the non slipping spur and the abundant butt of pull rod of inserted bar front end then, can prevent that the pull rod from taking off with adjusting nut pine also can prevent to miss to change adjusting nut operation and cause the pull rod to follow adjusting nut and rotate, has ensured the connection effect then.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the locking mechanism;

the main reference numerals in the figures have the following meanings:

1. adjusting shell, 2, adjusting cylinder, 3, fixing nut, 4, pull rod, 5, draw hook, 6, adjusting nut, 7, thread internal groove, 8, arc-shaped sealing plate, 9, fixture block slideway, 10, moving rod slideway, 11, ejector block slideway, 12, moving rod, 13, fixture block, 14, connecting block, 15, connecting column, 16, spring I, 17, limiting slot, 18, sinking slot, 19, inserting rod, 20, antiskid block, 21, limiting ring, 22, spring II, 23, plug, 24, limiting nut, 25, support lug, 26, locking spring, 27, thrust bearing, 28, ejector block.

Detailed Description

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

As shown in fig. 1-2: the embodiment is a tension adjusting bolt, which comprises two adjusting shells 1, two fixing nuts 3, two pull rods 4, two adjusting nuts 6, an arc-shaped sealing plate 8, a locking mechanism and a limiting slot 17,

the two adjusting shells 1 are semi-cylindrical, corresponding notches are formed in two sides of each adjusting shell 1, and the two adjusting shells 1 are assembled to form an adjusting cylinder 2;

the two fixing nuts 3 are arranged at the centers of the two ends of the adjusting cylinder 2, and the internal threads of the two fixing nuts 3 are opposite in rotating direction;

one ends of the two pull rods 4 close to each other are respectively screwed in the fixing nuts 3 at the two ends of the adjusting cylinder 2, and one ends of the two pull rods 4 far away from each other are respectively provided with a drag hook 5;

two adjusting nuts 6 are screwed in the cylinders at the two ends of the adjusting cylinder 2, internal threaded grooves 7 matched with the external threads of the adjusting nuts 6 are arranged in the cylinders at the two ends of the two adjusting shells 1 of the adjusting cylinder 2, and one ends of the pull rods 4 close to each other penetrate through the corresponding adjusting nuts 6 and are in threaded connection with the adjusting nuts 6;

the arc-shaped sealing plates 8 are embedded at two ends of the two adjusting shells 1 and respectively arranged corresponding to the thread inner grooves 7, a clamping block slideway 9 and a moving rod slideway 10 which are communicated with each other are sequentially and horizontally arranged between the arc-shaped sealing plates 8 and the thread inner grooves 7 from inside to outside, and a push block slideway 11 which is communicated with the moving rod slideway 10 is also arranged on the arc-shaped sealing plates 8;

the locking mechanism comprises a push block 28 mutually attached to the outer wall of the arc-shaped sealing plate 8, a moving rod 12 arranged in the moving rod slide way 10 in a sliding mode and a clamping block 13 arranged in the thread inner groove 7 in a sliding mode, the push block 28 is connected with a rod body of the moving rod 12 through a connecting block 14 arranged in the push block slide way 11 in a sliding mode, the moving rod 12 is connected with the side wall of one end, close to the end portion of the adjusting cylinder 2, of the clamping block 13 through a connecting column 15, and a first spring 16 is fixedly arranged at one end, close to the end portion of the adjusting cylinder 2, of the moving rod slide way 10;

spacing slot 17 evenly encircles and sets up at the outer edge of the one end that adjusting nut 6 is close to the tip of adjusting a section of thick bamboo 2, and spring 16 promotes movable rod 12 towards keeping away from one side displacement of adjusting a section of thick bamboo 2 tip and then drives fixture block 13 and insert in the spacing slot 17 that corresponds.

Referring to fig. 1 and 2, each limiting slot 17 is further provided with a sunken groove 18 which is in a convex structure and is communicated with a central threaded hole of the adjusting nut 6, an inserting rod 19 is arranged in the sunken groove 18, a deformable anti-slip block 20 is arranged at the front end of the inserting rod 19, a limiting ring 21 which is mutually attached to the inner wall of a large-diameter slotted hole of the sunken groove 18 and is arranged in a sliding manner is arranged on the inserting rod 19, a spring two 22 is sleeved on the inserting rod 19 which is positioned at the front end of the limiting ring 21 and at the rear end of a small-diameter section of the sunken groove 18, a plug 23 is arranged in the sunken groove 18 which is positioned at the rear end of the limiting ring 21, the rear end of the inserting rod 19 penetrates through the plug 23 and extends into the limiting slot 17, an inclined surface facing the side end of the adjusting cylinder 2 is formed at the end of the inserting rod 19 which is positioned in the limiting slot 17, and an inclined surface which is engaged with the end of the plug 19 is arranged at one end of the fixture block 13 which is inserted in the limiting slot 17.

Referring to fig. 1, a limit nut 24 is screwed at one end of each of the two pull rods 4 close to each other.

Referring to fig. 1, corresponding support lugs 25 are formed on one wall body of the two adjusting shells 1, which are attached to each other, corresponding bolt holes are formed in the support lugs 25, and the two adjusting shells 1 are assembled through bolt assemblies.

In this embodiment, the anti-slip blocks 20 are made of wear-resistant rubber material.

Referring to fig. 1, a locking spring 26 is sleeved on a rod body of a pull rod 4 positioned in an adjusting nut 6 and a corresponding adjusting cylinder 2, one end of the locking spring 26 close to the adjusting cylinder 2 is provided with a thrust bearing 27, the thrust bearing 27 is sleeved on the outer side of a fixing nut 3 and is connected with an inner end face of one of the adjusting shells 1, in actual application, the thrust bearing 27 and the fixing nut 3 are fixed on the adjusting shell 1 on one of the sides, and in order to improve the stability of the whole structure, the two adjusting shells 1 can be welded; after the compression spring 26 is compressed, the force of the pull rod 4 on the fixing nut 3 is transmitted to the adjusting shell 2 through the locking paralysis 26, so that the stress of the single fixing nut 3 is reduced, and the risk of damage to the fixing nut 3 due to overlarge pulling force is reduced.

In practical application, the push block 28 is held by hands to push the push block to two sides of the adjusting cylinder 2 for a certain distance, so that the rear end of the inserted rod 19 can rebound to the limiting slot 17 under the action of the second spring 22, and the end part of the push block 28 is still positioned in the limiting slot 17 to limit the adjusting nut 6; then rotate and adjust a section of thick bamboo 1, it is rotatory to adjust a section of thick bamboo 1 and drive fixing nut 3 at both ends, it is fixed with the connection stay cord because of the drag hook 5 at both ends, so the pull rod 4 of both ends will be driven to the rotation of both ends fixing nut 3 will move towards the direction that is close to each other this moment, then take-up the pull rope, loosen ejector pad 28 again, under the effect of spring 16, movable rod 12 will drive fixture block 13 and continue to stretch into spacing slot 17 in, the inclined plane of fixture block 13 tip will promote the inseparable butt of screw thread on 19 front end of inserted bar 19 and the pull rod 4 of 19 inward displacement messenger on the non slipping spur, can prevent that pull rod 4 from rotating, fixture block 13 also can prevent adjusting nut 6 from rotating, then the connection effect has been ensured.

The above description is only a preferred embodiment of the present patent, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the inventive concept, and these modifications and decorations should also be regarded as the protection scope of the present patent.

Claims

1. A tension adjusting bolt, comprising:

the two adjusting shells (1) are semi-cylindrical, corresponding notches are formed in the two sides of each adjusting shell (1), and the two adjusting shells (1) are assembled to form an adjusting cylinder (2);

the two fixing nuts (3) are arranged at the centers of two ends of the adjusting cylinder (2), and the internal threads of the two fixing nuts (3) are opposite in rotating direction;

one ends, close to each other, of the two pull rods (4) are respectively screwed in the fixing nuts (3) at the two ends of the adjusting cylinder (2), and the ends, far away from each other, of the two pull rods (4) are respectively provided with a drag hook (5);

the two adjusting nuts (6) are screwed in the cylinders at the two ends of the adjusting cylinder (2), internal thread grooves (7) matched with the external threads of the adjusting nuts (6) are arranged in the cylinders at the two ends of the two adjusting shells (1) of the adjusting cylinder (2), and one ends, close to each other, of the pull rods (4) penetrate through the corresponding adjusting nuts (6) and are in threaded connection with the adjusting nuts (6);

the arc-shaped sealing plates (8) are embedded at two ends of the two adjusting shells (1) and respectively arranged corresponding to the thread inner grooves (7), a clamping block slideway (9) and a moving rod slideway (10) which are communicated with each other are sequentially and horizontally arranged between the arc-shaped sealing plates (8) and the thread inner grooves (7) from inside to outside, and a push block slideway (11) which is communicated with the moving rod slideway (10) is also arranged on the arc-shaped sealing plates (8);

the locking mechanism comprises a push block (28) which is mutually attached to the outer wall of the arc-shaped sealing plate (8), a moving rod (12) which is arranged in a moving rod slide way (10) in a sliding mode and a clamping block (13) which is arranged in a thread inner groove (7) in a sliding mode, the push block (28) is connected with a rod body of the moving rod (12) through a connecting block (14) which is arranged in a push block slide way (11) in a sliding mode, the moving rod (12) is connected with the side wall of one end, close to the end portion of the adjusting cylinder (2), of the clamping block (13) through a connecting column (15), and a first spring (16) is fixedly arranged at one end, close to the end portion of the adjusting cylinder (2), of the moving rod slide way (10);

spacing slot (17), spacing slot (17) evenly encircle and set up at adjusting nut (6) and are close to the outer edge of the one end of adjusting a section of thick bamboo (2) tip, spring (16) promote carriage release lever (12) and then drive fixture block (13) and insert in corresponding spacing slot (17) towards the one side displacement of keeping away from adjusting a section of thick bamboo (2) tip.

2. The tension adjusting bolt as recited in claim 1, characterized in that each limiting slot (17) is further provided with a sunken groove (18) which is in a convex structure and is communicated with a central threaded hole of the adjusting nut (6), an inserted bar (19) is arranged in the sunken groove (18), a deformable anti-slip block (20) is arranged at the front end of the inserted bar (19), the inserted bar (19) is provided with a limiting ring (21) which is mutually attached to the inner wall of a large-diameter slotted hole of the sunken groove (18) and is arranged in a sliding manner, a second spring (22) is sleeved on the inserted bar (19) which is positioned at the front end of the limiting ring (21) and at the rear end of a small-diameter section of the sunken groove (18), a plug (23) is arranged in the sunken groove (18) which is positioned at the rear end of the limiting ring (21), and the rear end of the inserted bar (19) penetrates through the plug (23) and extends into the limiting slot (17), an inclined plane facing the side end of the adjusting cylinder (2) is formed at the end part of the inserted rod (19) positioned in the limiting slot (17), and an inclined plane matched with the end part of the inserted rod (19) is arranged at one end of the fixture block (13) inserted into the limiting slot (17).

3. A tension adjusting bolt as defined in claim 1, characterized in that a stop nut (24) is screwed on the end of each of the two tie rods (4) that are close to each other.

4. A tension adjusting bolt as defined in claim 1, characterized in that corresponding lugs (25) are formed on one wall body of the two adjusting shells (1) which are attached to each other, corresponding bolt holes are formed on the lugs (25), and the two adjusting shells (1) are assembled by means of a bolt assembly.

5. A tension adjusting bolt as defined in claim 1, wherein the anti-slip piece (20) is of rubber material.

6. A tension adjusting bolt as defined in claim 1, characterized in that a locking spring (26) is provided on the shank of the pull rod (4) in the adjusting nut (6) and the corresponding adjusting cylinder (2).

7. A tension adjusting bolt as defined in claim 6, characterized in that the end of the locking spring (26) adjacent to the adjusting barrel (2) is provided with a thrust bearing (27), and the thrust bearing (27) is sleeved on the outside of the fixing nut (3) and connected with the inner end surface of one of the adjusting shells (1).