Delayed fracture resistant alloy bolt

Abstract

The utility model relates to the technical field of bolts, in particular to a delayed fracture resistant alloy bolt. According to the technical scheme, a threaded column is arranged at the bottom end of a prism, the prism and the threaded column form a second bolt, the second bolt is installed in a to-be-fixed workpiece, a groove is formed in the prism, a threaded hole is formed in the threaded column, a containing groove is formed in the prism, a movable block is installed in the containing groove of the threaded column in a limiting mode, and the movable block is connected with the second bolt. And a first bolt is mounted in the second bolt through the grooves and the threaded holes of the prisms and the threaded columns. According to the utility model, the first bolt is engaged with the thread of the movable block, so that when the first bolt is rotated, the movable block can accurately slide in the accommodating groove along the limiting groove and is pushed outwards. And the movable blocks distributed circumferentially can reinforce the connection of the threaded column and the workpiece from multiple directions, so that the connection tightness and stability are greatly improved, the delayed fracture risk is effectively reduced, and the use requirements of complex working conditions are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, concretely relates to a kind of alloy bolts of delay fracture resistance. BACKGROUND

[0002] Bolt: mechanical parts, nut's cylindrical threaded fastener, by head and screw rod (cylindrical body with external thread) two parts consisting of a class of fasteners, need to cooperate with nut, for fastening connection two parts with through hole.

[0003] Through the retrieval, patent application No. CN202211690686.2 discloses a kind of 10.9 grade bolt steel and the preparation method of 10.9 grade bolt of hydrogen-induced delayed fracture resistance, although the device is used in a certain extent to improve the performance of bolt hydrogen-induced delayed fracture resistance by specific steel composition design, but the device is used, the tightness of bolt and workpiece connection is not optimized from structure design, it is difficult to deal with the connection loosening problem caused by vibration, external force impact etc. under complex working conditions. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of alloy bolts of delay fracture resistance, solve the problems raised in background art.

[0005] The technical problems solved by the utility model are as follows:

[0006] A kind of alloy bolts of delay fracture resistance, including prism, the bottom end of the prism is equipped with threaded column;

[0007] The prism and threaded column form second bolt, and the second bolt is installed in the workpiece to be fixed, the recess is opened in the prism, the threaded hole is opened in the threaded column, the accommodating groove is opened in the prism, the movable block is limit mounted in the accommodating groove of the threaded column, the first bolt is installed in the second bolt through the recess and threaded hole of the prism and threaded column.

[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0009] Further, the inner side surface of the accommodating groove is equipped with limit slot, the two sides of the movable block are equipped with guide rod, the movable block is slidably installed in the accommodating groove by the cooperation of guide rod and limit slot.

[0010] The beneficial effects of the above further scheme are as follows:

[0011] The design provides precise guidance and reliable limiting for the movement of the movable block in the accommodating groove. The cooperation of the guide rod and the limiting groove ensures that the movable block can only slide along the path defined by the limiting groove during movement, avoiding deviation or shaking of the movable block during movement. This ensures that the movable block can accurately reach the predetermined position, thereby ensuring that the subsequent movable block can be pushed outward to reinforce the connection function stably and effectively. At the same time, the guiding and limiting structure also enhances the smoothness of the sliding of the movable block in the accommodating groove, reduces the friction and wear between the movable block and the accommodating groove, and prolongs the service life of the bolt overall structure.

[0012] Further, the top end of the movable block is provided with a guide arc groove, and the inner side surface of the movable block is provided with a thread matched with the first bolt, and the first bolt is threadedly engaged with the movable block.

[0013] The beneficial effects of the above further scheme are:

[0014] The guide arc groove at the top end of the movable block can play a certain guiding and buffering role during the movement of the movable block. When the first bolt pushes the movable block, the guide arc groove can make the movable block more smoothly cooperate with the surrounding parts, reducing the jamming and interference during movement. The thread on the inner side surface of the movable block matched with the first bolt can accurately convert the rotary motion of the first bolt into the linear motion of the movable block through thread engagement. This transmission method has high precision and stability, and the operator can accurately control the distance of the movable block moving outward by controlling the number of rotations and angle of the first bolt, so as to adjust the reinforcement degree of the movable block to the connection between the threaded column and the workpiece according to actual needs.

[0015] Further, the movable block is pushed outward in the accommodating groove by the first bolt, so that the threaded column and the workpiece to be fixed are more closely connected.

[0016] The beneficial effects of the above further scheme are:

[0017] The movable block is pushed outward by the first bolt, and the movable block generates additional extrusion force on the connection between the threaded column and the workpiece to be fixed. This extrusion force increases the friction between the threaded column and the workpiece, effectively resisting the loosening of the bolt caused by external forces such as vibration and impact. In actual use scenarios, many mechanical equipment will produce vibration during operation, and ordinary bolts may gradually loosen under the action of such vibration, affecting the normal operation of the equipment and even causing safety hazards. The delay fracture resistant alloy bolt enhances the tightness and stability of the connection through the pushing action of the movable block, greatly improving the reliability and safety of the equipment operation. At the same time, the tight connection also helps to reduce stress concentration and reduce the risk of delay fracture of the bolt due to stress fatigue.

[0018] Further, the movable blocks are circumferentially distributed on the threaded column.

[0019] The beneficial effects of the above further scheme are:

[0020] The movable blocks are circumferentially distributed on the threaded column, so that when the first bolt pushes the movable blocks outward, the connection between the threaded column and the workpiece can be reinforced from multiple directions. This multi-directional reinforcement method makes the connection force more evenly distributed throughout the connection site, avoiding the situation of excessive or insufficient local stress. In traditional bolt connections, uneven stress distribution may cause some threads to wear out or be damaged prematurely, affecting the reliability and service life of the connection. The circumferential distribution design of the movable blocks of the bolt can effectively improve this situation, so that each part of the connection site can withstand a more balanced force, thereby improving the overall strength and durability of the connection. In addition, uniform stress distribution also helps to further reduce stress concentration and enhance the resistance to delayed fracture of the bolt.

[0021] The utility model provides a kind of resistance to delayed fracture alloy bolt. With following beneficial effects:

[0022] The first bolt is installed in the second bolt (composed of prism and threaded column), and the first bolt can push the movable blocks outward in the accommodating groove. After the movable blocks move outward, the threaded column can be connected more tightly with the workpiece to be fixed, effectively reducing the bolt loosening caused by vibration or external force, and enhancing the stability and reliability of the connection. The movable blocks are circumferentially distributed on the threaded column, so that when the first bolt pushes the movable blocks, the connection between the threaded column and the workpiece can be reinforced from multiple directions, making the connection force more evenly distributed, avoiding uneven local stress and loosening or damage.

[0023] A limiting groove is formed in the inner surface of the accommodating groove, and guide rods are arranged on both sides of the movable block. The movable block is slidably installed in the accommodating groove by cooperating with the limiting groove. This design not only ensures the smooth sliding of the movable block in the accommodating groove, but also effectively limits the movement direction of the movable block to prevent it from deviating during movement, ensuring that the movable block accurately plays a role in reinforcing the connection. The inner surface of the movable block is provided with threads matched with the first bolt, and the first bolt is engaged with the movable block by threads. This threaded engagement can convert the rotary motion of the first bolt into the linear motion of the movable block, achieving precise control of the movable block and facilitating the adjustment of the position of the movable block according to actual needs to achieve the best connection reinforcement effect. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the utility model and form part of the present application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation on the utility model.

[0025] In the drawings:

[0026] Fig. 1 It is the front view appearance schematic drawing of the utility model;

[0027] Fig. 2 It is the bottom view appearance schematic drawing of the utility model;

[0028] Fig. 3 It is the section structure schematic drawing of the utility model.

[0029] In the drawings, the component list represented by each sign is as follows:

[0030] 1, first bolt;2, prism;201, recess;3, movable block;301, guide rod;4, threaded column;401, accommodating groove;402, threaded hole;403, limiting groove. Specific implementation

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Please refer to Figs. 1-3 The embodiments provided by the utility model:

[0033] Embodiment one: a delayed fracture resistant alloy bolt, comprising a prism 2, a threaded column 4 is arranged at the bottom end of the prism 2, the prism 2 and the threaded column 4 form a second bolt, and the second bolt is installed in a workpiece to be fixed, a recess 201 is arranged in the prism 2, a threaded hole 402 is arranged in the threaded column 4, a containing groove 401 is arranged on the prism 2, a movable block 3 is limitingly installed in the containing groove 401 of the threaded column 4, the movable block 3 is circumferentially distributed on the threaded column 4, and the movable block 3 is circumferentially distributed on the threaded column 4, so that when the first bolt 1 pushes the movable block 3 outward, the connection between the threaded column 4 and the workpiece can be reinforced from multiple directions at the same time. This multi-directional reinforcement method makes the connection force more evenly distributed in the entire connection part, avoiding the situation that the local stress is too large or too small. In traditional bolt connection, uneven stress may cause some threads to wear out or be damaged in advance, affecting the reliability and service life of the connection. The circumferential distribution design of the movable block 3 of the bolt can effectively improve this situation, so that each part of the connection part can bear a more balanced force, thereby improving the overall strength and durability of the connection. In addition, uniform stress distribution also helps to further reduce stress concentration and enhance the delayed fracture resistance of the bolt. The inner side surface of the containing groove 401 is provided with a limiting groove 403, the two sides of the movable block 3 are provided with guide rods 301, and the movable block 3 is slidingly installed in the containing groove 401 through cooperation of the guide rods 301 and the limiting groove 403. This design provides accurate guidance and reliable limiting for the movement of the movable block 3 in the containing groove 401. The cooperation of the guide rods 301 and the limiting groove 403 makes the movable block 3 only slide along the path defined by the limiting groove 403 during movement, avoiding the movable block 3 from deviating or shaking during movement. This ensures that the movable block 3 can accurately reach the predetermined position, thereby ensuring that the subsequent function of the movable block 3 to push outward to reinforce the connection can be stably and effectively realized. At the same time, this guiding and limiting structure also enhances the smoothness of the sliding of the movable block 3 in the containing groove 401, reduces the friction and wear between the movable block 3 and the containing groove 401, and prolongs the service life of the overall structure of the bolt.

[0034] Embodiment two: in order to improve the tightness, stability and reduce the risk of delayed fracture of the bolt connection, for example, Figs. 1-3As shown, the utility model still includes: first bolt 1 is installed through the recess 201 and the threaded hole 402 of the prism 2 and the threaded column 4 in the second bolt, the movable block 3 is extruded outward in the accommodating groove 401 through the first bolt 1, make the threaded column 4 and the workpiece to be fixed more closely connected, push the movable block 3 outward through the first bolt 1 and expand, and the movable block 3 generates additional extrusion force between the threaded column 4 and the workpiece to be fixed. This extrusion force increases the friction between the threaded column 4 and the workpiece, effectively resisting the loosening of the bolt caused by external forces such as vibration, impact, etc. In actual use scenarios, many mechanical equipment will produce vibration during operation, ordinary bolts may gradually loosen under the action of such vibration, affecting the normal operation of the equipment and even causing safety hazards. The delay fracture resistant alloy bolt enhances the tightness and stability of the connection through the extrusion of the movable block 3, greatly improving the reliability and safety of the equipment operation. At the same time, the tight connection also helps to reduce stress concentration and reduce the risk of delayed fracture of the bolt due to stress fatigue. The top of the movable block 3 is provided with a guide arc groove, and the inner surface of the movable block 3 is provided with a thread matched with the first bolt 1. The first bolt 1 is engaged with the movable block 3 through the thread, and the guide arc groove at the top of the movable block 3 can play a certain guiding and buffering role during the movement of the movable block 3. When the first bolt 1 pushes the movable block 3, the guide arc groove can make the movable block 3 more smoothly cooperate with the surrounding parts, reducing the jamming and interference during movement. The thread on the inner surface of the movable block 3 matched with the first bolt 1 can accurately convert the rotary motion of the first bolt 1 into the linear motion of the movable block 3 through thread engagement. This transmission method has high precision and stability, and the operator can accurately control the distance of the movable block 3 moving outward by controlling the number of rotations and the angle of the first bolt 1, so as to adjust the reinforcement degree of the movable block 3 to the connection between the threaded column 4 and the workpiece according to actual needs.

[0035] Working principle:

[0036] The second bolt composed of the prism 2 and the threaded column 4 is installed in the workpiece to be fixed. At this time, the second bolt initially plays a fixing role, and the threads of the threaded column 4 cooperate with the threaded holes of the workpiece, establishing a connection between the bolt and the workpiece.

[0037] The first bolt 1 is inserted through the recess 201 of the prism 2 and screwed into the threaded hole 402 of the threaded column 4. The function of the first bolt 1 is to subsequently push the movable block 3, and its rotary motion will be converted into the linear motion of pushing the movable block 3, which is based on the principle of thread engagement, that is, through the mutual engagement of threads, when the first bolt 1 rotates, the movable block 3 will move along the axial direction of the thread.

[0038] Continuing to rotate the first bolt 1, since the inner side surface of the movable block 3 is provided with threads matched with the first bolt 1, the two are engaged through threads, and the rotation of the first bolt 1 pushes the movable block 3 to move outward in the accommodating groove 401. The inner side surface of the accommodating groove 401 is provided with a limiting groove 403, the movable block 3 is provided with guide rods 301 on both sides, and the movable block 3 is slidably installed in the accommodating groove 401 through the cooperation of the guide rods 301 and the limiting groove 403, so as to ensure the stable movement of the movable block 3 along the predetermined direction.

[0039] The movable blocks 3 are circumferentially distributed on the threaded column 4, and when the movable blocks 3 are pushed outward by the first bolt 1, the connection of the threaded column 4 and the workpiece is reinforced from multiple directions. The extrusion force generated by the outward movement of the movable blocks 3 makes the connection of the threaded column 4 and the workpiece to be fixed more closely, effectively reduces the loosening of the bolt caused by vibration or external force, and enhances the stability and reliability of the connection. The circumferential distribution design makes the connection force more evenly distributed, avoiding loosening or damage caused by uneven local stress.

[0040] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and for those skilled in the art, obviously, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A kind of delayed fracture resistant alloy bolt, including prism (2), the bottom end of the prism (2) is provided with threaded column (4), it is characterized in that: The prism (2) and threaded column (4) constitute second bolt, and second bolt is installed in the workpiece to be fixed, recess (201) is set in the prism (2), threaded hole (402) is set in the threaded column (4), the accommodating groove (401) is set on the prism (2), the movable block (3) is limitedly installed in the accommodating groove (401) of threaded column (4), first bolt (1) is installed in the second bolt by the recess (201) and threaded hole (402) of prism (2) and threaded column (4).

2. The delayed fracture resistant alloy bolt of claim 1, wherein: The inner side surface of the accommodating groove (401) is provided with limit slot (403), the movable block (3) is provided with guide rod (301) on both sides, the movable block (3) is slidably installed in the accommodating groove (401) by the cooperation of guide rod (301) and limit slot (403).

3. The delayed fracture resistant alloy bolt of claim 1, wherein: The top of the movable block (3) is provided with guide arc groove, and the inner side surface of the movable block (3) is provided with thread matched with first bolt (1), and the first bolt (1) is engaged with the movable block (3) by thread.

4. The delayed fracture resistant alloy bolt of claim 1, wherein: The movable block (3) is extruded outward in the accommodating groove (401) by first bolt (1), so that threaded column (4) is more closely connected with the workpiece to be fixed.

5. The delayed fracture resistant alloy bolt of claim 1 wherein: The movable block (3) is circumferentially distributed on the threaded column (4).

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