阅读说明：本技术 一种耐候钢高强度螺栓连接副及其生产工艺 (Weather-resistant steel high-strength bolt connecting pair and production process thereof ) 是由 徐勇 张建东 侯建良 徐奇军 张仕益 杨安意 于 2021-07-21 设计创作，主要内容包括：本发明涉及螺栓连接副技术领域,且公开了一种耐候钢高强度螺栓连接副,包括螺栓、螺母和两个垫圈,所述螺母螺纹连接在螺栓上,所述螺栓的一端固定连接有螺帽,两个所述垫圈均套设在螺帽和螺母之间的螺栓上,所述螺栓的杆壁上呈条状均匀等距的开设有若干个固定槽,所述螺母外侧壁上关于螺栓对称开设有活动槽,所述活动槽槽底开设有活动孔,所述活动槽槽底固定连接有第一弹簧,所述第一弹簧的另一端固定连接有活动座。该耐候钢高强度螺栓连接副能够在螺母旋入后将螺母和螺栓相对位置锁定,使得螺母和螺栓之间不会因为外力而发生相对滑动,防止螺母出现松动现象,提高螺母和螺栓连接稳固性,对物体的固定效果更好。(The invention relates to the technical field of bolt connection pairs, and discloses a weather-resistant steel high-strength bolt connection pair which comprises a bolt, a nut and two washers, wherein the nut is in threaded connection with the bolt, one end of the bolt is fixedly connected with the nut, the two washers are sleeved on the bolt between the nut and the nut, a plurality of fixing grooves are uniformly arranged on the rod wall of the bolt in a strip shape at equal intervals, movable grooves are symmetrically arranged on the outer side wall of the nut relative to the bolt, movable holes are arranged at the bottoms of the movable grooves, a first spring is fixedly connected at the bottom of each movable groove, and a movable seat is fixedly connected at the other end of the first spring. This resistant steel high strength bolted connection is vice can lock nut and bolt relative position after the nut screw in for can not take place relative slip because of external force between nut and the bolt, prevent not hard up phenomenon from appearing in the nut, improve nut and bolted connection steadiness, it is better to the fixed effect of object.)

1. The utility model provides a resistant steel high strength bolted connection is vice, includes bolt (1), nut (2) and two washers (3), its characterized in that: the nut (2) is in threaded connection with the bolt (1), one end of the bolt (1) is fixedly connected with a nut (4), two washers (3) are sleeved on the bolt (1) between the nut (4) and the nut (2), a plurality of fixed grooves (5) are formed in the rod wall of the bolt (1) in a strip shape and are uniformly and equidistantly, movable grooves (6) are symmetrically formed in the outer side wall of the nut (2) relative to the bolt (1), movable holes (7) are formed in the bottoms of the movable grooves (6), first springs (8) are fixedly connected to the bottoms of the movable grooves (6), movable seats (9) are fixedly connected to the other ends of the first springs (8), movable rods (10) are fixedly connected to the bottoms of the movable seats (9), and the other ends of the movable rods (10) penetrate through the notches of the first springs (8), the movable holes (7) and the corresponding fixed grooves (5) and extend into the fixed grooves (5), spout (11) have been seted up in relation to bolt (1) symmetry on nut (2) lateral wall, sliding connection has slider (12) in spout (11), fixedly connected with second spring (13) on spout (11) cell wall, the other end fixed connection of second spring (13) is on slider (12), two the one end that bolt (1) was kept away from in slider (12) is passed corresponding spout (11) notch and outwards is extended, and common fixedly connected with adjustable frame (14), adjustable frame (14) cover is established outside nut (2), about bolt (1) symmetry fixedly connected with clamp plate (15), two on the lateral wall of adjustable frame (14) clamp plate (15) set up respectively in movable seat (9) one side that corresponds.

2. The weathering steel high strength bolting pair according to claim 1, characterized in that: the ball groove (16) have been seted up to slider (12) one end that is close to spout (11) tank bottom, roll in ball groove (16) and be connected with ball (17), ball (17) are kept away from the notch of ball groove (16) and are outwards extended to the one end of ball groove (16) tank bottom, and with spout (11) tank bottom roll connection.

3. The weathering steel high strength bolting pair according to claim 1, characterized in that: the anti-skid device is characterized in that a plurality of anti-skid lugs (18) are fixedly connected to the opposite side walls of the two gaskets (3), and the anti-skid lugs (18) are arranged in a ring shape.

4. The weathering steel high strength bolting pair according to claim 1, characterized in that: and reinforcing ribs (19) are fixedly connected between the pressing plate (15) and the movable frame (14), and the cross sections of the reinforcing ribs (19) are right-angled triangles.

5. The weathering steel high strength bolting pair according to claim 1, characterized in that: one end of the movable seat (9) far away from the movable rod (10) is hemispherical, and the surfaces of the bolt (1), the nut (2) and the two gaskets (3) are coated with chromium-free Dacromet paint.

6. The production process of the high-strength weathering steel bolt connection pair is characterized by comprising the following steps of:

the method comprises the following steps: selecting high-strength weathering steel alloy materials to manufacture base materials of the bolt, the nut and the two washers, and ensuring that the contents of S and P are both less than or equal to 0.02 percent;

step two: sequentially carrying out coiling, pickling and annealing treatment on the selected material, and then sequentially carrying out secondary pickling, wire drawing, cold heading, tooth rolling and heat treatment to finally generate a bolt connecting pair;

step three: and cooling the bolt connection pair after heat treatment, performing surface treatment on the bolt connection pair, and packaging and storing the finished product of the bolt connection pair.

Technical Field

The invention relates to the technical field of bolt connection pairs, in particular to a weather-resistant steel high-strength bolt connection pair and a production process thereof.

Background

The bolt connection pair is a high-strength bolt connection pair, each connection pair comprises a bolt, a nut and two washers, the bolt, the nut and the washer are produced in the same batch and are products processed by the same heat treatment process.

The high-strength weather-resistant steel bolt connecting pair is made of weather-resistant steel materials and has excellent corrosion resistance, and alloy elements such as CU, NI and the like contained in the high-strength weather-resistant steel bolt connecting pair form an effective oxide layer on the surface of a part in a corrosion process after the alloy elements are formed in a certain proportion, so that the surface of the part is isolated from the outside air, and the corrosion is stopped, thereby achieving the effect of corrosion resistance. But the nut and the bolted connection steadiness of the vice bolted connection of current resistant steel high strength are relatively poor, when receiving impact and vibration, the nut phenomenon of becoming flexible easily appears, lead to relatively poor to the fixed effect of object.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a weathering steel high-strength bolt connecting pair, which has the advantages that relative sliding between a nut and a bolt can not occur due to external force, and the nut is prevented from being separated from the bolt, and solves the problems that the nut and the bolt of the existing weathering steel high-strength bolt connecting pair are poor in connection stability and prone to nut loosening when impacted and vibrated.

(II) technical scheme

In order to achieve the purpose of preventing the nut from being separated from the bolt due to the relative sliding between the nut and the bolt caused by external force, the invention provides a weather-resistant steel high-strength bolt connection pair, which comprises a bolt, a nut and two washers, wherein the nut is in threaded connection with the bolt, one end of the bolt is fixedly connected with the nut, the two washers are sleeved on the bolt between the nut and the nut, a plurality of fixing grooves are uniformly arranged on the rod wall of the bolt in a strip shape at equal intervals, movable grooves are symmetrically arranged on the outer side wall of the nut relative to the bolt, movable holes are arranged at the bottoms of the movable grooves, a first spring is fixedly connected at the bottoms of the movable grooves, a movable seat is fixedly connected at the other end of the first spring, a movable rod is fixedly connected at the bottom of the movable seat, and the other end of the movable rod penetrates through the first spring, the movable holes and the corresponding groove openings and extends inwards the fixing grooves, the utility model discloses a nut, including nut, spout, slide connection, and common fixedly connected with movable frame, the spout has been seted up about the bolt symmetry on the nut lateral wall, sliding connection has the slider in the spout, fixedly connected with second spring on the spout cell wall, the other end fixed connection of second spring is on the slider, two the one end that the bolt was kept away from to the slider passes corresponding spout notch and outwards extends, and common fixedly connected with movable frame, the movable frame cover is established outside the nut, about the symmetrical fixedly connected with clamp plate of bolt, two on the lateral wall of movable frame the clamp plate sets up respectively in corresponding sliding seat one side.

Preferably, a ball groove is formed in one end, close to the bottom of the sliding groove, of the sliding block, a ball is connected in the ball groove in a rolling mode, and one end, far away from the bottom of the ball groove, of the ball penetrates through a groove opening of the ball groove and extends outwards and is connected with the bottom of the sliding groove in a rolling mode.

Preferably, a plurality of anti-skid lugs are fixedly connected to the opposite side walls of the two gaskets and are arranged in a circle in an annular shape.

Preferably, a reinforcing rib is fixedly connected between the pressing plate and the movable frame, and the cross section of the reinforcing rib is a right-angled triangle.

Preferably, one end of the movable seat, which is far away from the movable rod, is hemispherical, and the surfaces of the bolt, the nut and the two washers are coated with chromium-free Dacromet paint.

The invention also provides a production process of the weather-resistant steel high-strength bolt connecting pair, which comprises the following steps:

the method comprises the following steps: the base materials of the bolt, the nut and the two washers are made of high-strength weathering resistant steel alloy materials, and the contents of sulfur S and phosphorus P are ensured to be less than or equal to 0.02 percent.

Step two: and sequentially carrying out coiling, pickling and annealing treatment on the selected material, and then sequentially carrying out secondary pickling, wire drawing, cold heading, tooth rolling and heat treatment to finally generate a bolt connecting pair.

Step three: and cooling the bolt connection pair after heat treatment, performing surface treatment on the bolt connection pair, and packaging and storing the finished product of the bolt connection pair.

(III) advantageous effects

Compared with the prior art, the invention provides a weather-resistant steel high-strength bolt connecting pair, which has the following beneficial effects:

this resistant steel high strength bolted connection is vice, through setting up the bolt, the nut, the packing ring, the nut, the fixed slot, the activity groove, the activity hole, first spring, the sliding seat, the movable rod, the spout, the slider, the second spring, movable frame and clamp plate, when this bolted connection is vice when needs use, promote the movable frame and do the motion of keeping away from the nut, make the movable rod break away from in the fixed slot, the nut rotates again, and make it break away from the bolt, can utilize this bolt and nut to fix the object, make the movable rod insert the end insert in the fixed slot that corresponds, can lock nut and bolt relative position behind the nut screw in, make can not take place relative slip because of external force between nut and the bolt, prevent not hard up phenomenon from appearing in the nut, improve nut and bolted connection steadiness, fixed effect to the object is better.

Drawings

FIG. 1 is a schematic structural view of a high-strength weathering steel bolt connection pair according to the present invention;

FIG. 2 is a connection structure diagram of a bolt and a nut of a weathering steel high-strength bolt connection pair provided by the invention;

fig. 3 is an enlarged view of a portion a in fig. 1.

In the figure: 1 bolt, 2 nuts, 3 washers, 4 nuts, 5 fixed grooves, 6 movable grooves, 7 movable holes, 8 first springs, 9 movable seats, 10 movable rods, 11 sliding grooves, 12 sliding blocks, 13 second springs, 14 movable frames, 15 pressing plates, 16 ball grooves, 17 balls, 18 anti-skid lugs and 19 reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a weathering steel high-strength bolt connection pair comprises a bolt 1, a nut 2 and two washers 3, wherein the nut 2 is connected to the bolt 1 by screw threads, one end of the bolt 1 is fixedly connected with a nut 4, the two washers 3 are both sleeved on the bolt 1 between the nut 4 and the nut 2, a plurality of fixing grooves 5 are uniformly arranged on the rod wall of the bolt 1 in a strip shape at equal intervals, movable grooves 6 are symmetrically arranged on the outer side wall of the nut 2 relative to the bolt 1, movable holes 7 are arranged at the bottoms of the movable grooves 6, a first spring 8 is fixedly connected to the bottom of the movable groove 6, a movable seat 9 is fixedly connected to the other end of the first spring 8, a movable rod 10 is fixedly connected to the bottom of the movable seat 9, the other end of the movable rod 10 penetrates through the first spring 8, the movable holes 7 and the corresponding fixing grooves 5 and extends into the fixing grooves 5, sliding grooves 11 are symmetrically arranged on the outer side wall of the nut 2 relative to the bolt 1, a sliding block 12 is connected in the sliding groove 11 in a sliding way, a second spring 13 is fixedly connected on the groove wall of the sliding groove 11, the other end of the second spring 13 is fixedly connected on the sliding block 12, one end of each sliding block 12 far away from the bolt 1 passes through the corresponding groove opening of the sliding groove 11 and extends outwards, and is fixedly connected with a movable frame 14 together, the movable frame 14 is sleeved outside the nut 2, pressing plates 15 are fixedly connected on the side wall of the movable frame 14 symmetrically relative to the bolt 1, the two pressing plates 15 are respectively arranged on one side of the corresponding movable seat 9, when the bolt connection pair is needed, the movable frame 14 is pushed to move far away from the nut 4, the sliding block 12 slides in the sliding groove 11, so that the second spring 13 is compressed, the pressing plate 15 leaves from one side of the movable seat 9, the first spring 8 recovers to drive the movable seat 9 and the movable rod 10 to move far away from the bolt 1, so that the movable rod 10 is separated from the fixed groove 5, and then the nut 2 is rotated, and make it break away from bolt 1, can utilize this bolt 1 and nut 2 to fix the object, nut 2 revolves before bolt 1, clamp plate 15 does not offset with sliding seat 9, again with the rotatory fixing on bolt 1 of nut 2, cancel the pulling force to sliding frame 14, sliding frame 14 and the motion of clamp plate 15, clamp plate 15 extrudees the protruding end of sliding seat 9, first spring 8 compresses, make movable rod 10 insert the end and insert in corresponding fixed slot 5, can lock nut 2 and bolt 1 relative position after nut 2 screws in, make can not take place relative slip because of external force between nut 2 and the bolt 1, prevent that nut 2 from appearing not hard up the phenomenon, improve nut 2 and bolt 1 and be connected the steadiness, it is better to the fixed effect of object.

The slider 12 has been seted up ball groove 16 near the one end of 11 tank bottoms of spout, the ball is connected with ball 17 in the ball groove 16 is rolled, ball 17 is kept away from the one end of 16 tank bottoms of ball groove and is passed the notch of ball groove 16 and outwards extended, and with 11 tank bottoms of spout roll connection, during the motion of movable frame 14, can drive slider 12 and slide in the spout 11 that corresponds, and ball 17's setting can reduce the friction between slider 12 and the spout 11, easily slider 12's slip.

Equal fixedly connected with a plurality of skid proof block 18 on the lateral wall that two packing rings 3 are opposite, a plurality of skid proof block 18 is the round range of annular round, has increased the roughness of packing ring 3 lateral wall for when packing ring 3 and object contact, prevent that packing ring 3 and object from taking place relative slip.

Fixedly connected with strengthening rib 19 between clamp plate 15 and the movable frame 14, the cross section of strengthening rib 19 is right triangle, and strengthening rib 19 has increased the joint strength of clamp plate 15 and movable frame 14, prevents clamp plate 15 and movable frame 14 fracture separation.

One end of the movable seat 9, which is far away from the movable rod 10, is hemispherical, so that the pressure plate 15 and the movable seat 9 can be easily extruded to enable the movable seat 9 to move, and the surfaces of the bolt 1, the nut 2 and the two gaskets 3 are coated with chromium-free Dacromet paint.

A production process of a weathering steel high-strength bolt connection pair comprises the following steps:

the method comprises the following steps: the base materials of the bolt, the nut and the two washers are made of high-strength weathering resistant steel alloy materials, and the contents of sulfur S and phosphorus P are ensured to be less than or equal to 0.02 percent.

Step two: and sequentially carrying out coiling, pickling and annealing treatment on the selected material, and then sequentially carrying out secondary pickling, wire drawing, cold heading, tooth rolling and heat treatment to finally generate a bolt connecting pair.

Step three: and cooling the bolt connection pair after heat treatment, performing surface treatment on the bolt connection pair, and packaging and storing the finished product of the bolt connection pair.

To sum up, when the bolt connection pair needs to be used, the movable frame 14 is pushed to move away from the nut 4, the sliding block 12 slides in the sliding groove 11, so that the second spring 13 is compressed, the pressing plate 15 leaves from one side of the movable seat 9, the first spring 8 recovers to drive the movable seat 9 and the movable rod 10 to move away from the bolt 1, so that the movable rod 10 is separated from the fixed groove 5, the nut 2 is rotated to be separated from the bolt 1, an object can be fixed by using the bolt 1 and the nut 2, the nut 2 is screwed in front of the bolt 1, the pressing plate 15 is not abutted against the movable seat 9, the nut 2 is rotationally fixed on the bolt 1, the pulling force on the movable frame 14 is cancelled, the movable frame 14 and the pressing plate 15 move, the pressing plate 15 presses the protruding end of the movable seat 9, the first spring 8 is compressed, so that the insertion end of the movable rod 10 is inserted into the corresponding fixed groove 5, and the relative position of the nut 2 and the bolt 1 can be locked after the nut 2 is screwed in, make can not take place relative slip because of external force between nut 2 and the bolt 1, prevent that not hard up phenomenon from appearing in nut 2, improve nut 2 and 1 connection steadiness of bolt, it is better to the fixed effect of object.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.