High-wear-resistance titanium alloy bolt for gear groove pan head

Abstract

The utility model belongs to the technical field of bolts, and discloses a high-wear-resistance gear groove pan head titanium alloy bolt which comprises a bolt head, a screw rod and a nut, the bolt head is fixedly connected with the screw rod, the screw rod is in threaded connection with the nut, the nut is connected with a protection assembly, and the protection assembly is connected with the screw rod. The protection assembly comprises a hexagonal pipe body fixedly connected to the bottom of the nut, the hexagonal pipe body is movably connected with a hexagonal barrel, the bottom end of the hexagonal pipe body is arranged in the hexagonal barrel, and the protection assembly wraps a screw rod at the bottom of the nut, so that the screw rod is prevented from being corroded by various external substances, and the service life of the bolt is prolonged. And the protection assembly is connected with the screw rod and the nut, the nut can be prevented from rotating relative to the screw rod to a certain degree, use of the bolt is facilitated, the sealing performance between the nut and a fastened piece is enhanced through the sealing ring, some substances are prevented from permeating into the position, penetrating through the fastened piece, of the screw rod, and the protection effect of the screw rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bolt technical field, specifically a kind of high wear resistance gear groove disc head titanium alloy bolt. BACKGROUND

[0002] Bolt is a common mechanical part, it is two parts of head and screw rod (cylinder with external thread) Composition class fastener, need to cooperate with nut, for fastening connection two parts with through hole, high wear resistance gear groove disc head titanium alloy bolt is a kind of titanium alloy material bolt that combines gear groove design and disc head design, gear groove is located in bolt head, it is usually multiple evenly distributed dentiform structure. This design increases the contact area and friction of bolt head and tool, using special gear groove wrench or tool can more conveniently, more firmly hold bolt head, realize accurate torque transmission, facilitate to tighten or loosen bolt, especially suitable for the occasion needing larger torque and high-precision installation, also can effectively prevent tool from slipping during operation, improve the efficiency and safety of installation and disassembly, the bolt head with disc head shape has larger diameter and flat top, the contact area with connected component is larger, in the fastening process, force can be evenly distributed on the surface of connected component, reduce local stress concentration, make connection more stable and flat, help to improve the sealing and stability of connection, suitable for the parts with higher requirements for connection surface flatness and sealing.

[0003] The Chinese patent with application number 202322557127.0 discloses a kind of anti-skid gear groove titanium alloy bolt, including bolt head, the side surface of the bolt head is fixedly installed with screw rod, the outer surface of the screw rod is threadedly installed with nut one and nut two, the side surface of the nut one is rotatably installed with connecting sleeve, the side surface of the nut two is fixedly installed with the limiting sleeve used in cooperation with connecting sleeve, locking mechanism for fixing the retraction of connecting sleeve is arranged on the limiting sleeve, the inner wall of the nut one and the nut two is all equipped with the internal thread used in cooperation with screw rod, and the thread direction of two internal threads is opposite, by setting nut one, nut two, the double fixing work of screw rod can be carried out using nut one and nut two, improve the fixing stability of screw rod, by setting the thread on the inner wall of nut one and nut two as opposite, when screw rod rotates in different directions, limiting can be carried out by nut one and nut two respectively, effectively avoid the situation that screw rod slips.

[0004] However, the above-mentioned titanium alloy bolt has the following problems in actual use: the bottom end position of the screw rod is directly exposed outside, and in some special working environments, the thread position will be eroded, affecting the service life of the bolt.

[0005] Therefore, a high wear resistance gear groove disc head titanium alloy bolt is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] To solve the problems presented in the background art, the utility model provides a high wear -resisting gear groove disc head titanium alloy bolt has the advantages of protecting the thread of the bolt, avoiding affecting the service life of the bolt.

[0007] To achieve the above object, the utility model provides the following technical scheme: a high wear -resisting gear groove disc head titanium alloy bolt, including bolt head, screw rod, nut, the bolt head fixedly connected screw rod, the screw rod is connected the nut, the nut is connected with protection assembly, protection assembly connects screw rod,

[0008] The protection assembly includes the hexagonal pipe body fixedly connected at the bottom of the nut, the hexagonal pipe body is movably connected with the hexagonal cylinder, the bottom end of the hexagonal pipe body is arranged in the hexagonal cylinder, the position of the hexagonal pipe body outside the bottom is provided with the sealing ring, the sealing ring is attached to the inner wall of the hexagonal cylinder, the bottom of the hexagonal cylinder is provided with the fastening screw, and the fastening screw is threadedly connected with the screw rod.

[0009] Preferably, the bolt head includes a disc head body, an enlarged portion is formed outwardly at the bottom position of the disc head body, and a gear groove is formed at the top of the disc head body.

[0010] Preferably, the bolt head is provided with a sealing washer at the bottom, and the sealing washer is sleeved on the screw rod.

[0011] Preferably, a limiting groove is formed at the top of the nut, and a sealing ring is arranged in the limiting groove.

[0012] Preferably, a through hole is formed at the bottom of the hexagonal cylinder, and the rod body of the fastening screw passes through the through hole.

[0013] Preferably, a threaded groove is formed at the bottom end face of the screw rod, and the threaded groove is threadedly connected with the fastening screw.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] 1. The utility model discloses a protection assembly is set up, and the screw rod of nut bottom position is wrapped, avoids the erosion of various substances from outside, prolongs the service life of the bolt, and protection assembly connects screw rod and nut, can prevent the nut from rotating relative to the screw rod to a certain extent, and it is favorable to the use of the bolt.

[0016] 2. The utility model discloses a limiting groove and a sealing ring are set up, the sealing property between the nut and the fastened part is enhanced, some substances are prevented from penetrating into the position of the screw rod passing through the fastened part, and the protection effect of the screw rod is improved. DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model.

[0018] Figure 2 It is the structure schematic view of the bolt head, screw rod and nut of the utility model;

[0019] Figure 3 It is the structure schematic view of the nut of the utility model;

[0020] Figure 4 It is the structure schematic view of the protective assembly of the utility model;

[0021] Figure 5 It is the structure schematic view of the protective assembly position of the utility model.

[0022] In the figure: 1, bolt head; 101, disc head main body; 102, enlarged part; 103, gear groove; 2, screw rod; 3, nut;

[0023] 4, protective assembly; 401, hexagonal tube body; 402, hexagonal cylinder body; 403, sealing ring; 404, fastening screw; 405, through hole; 406, thread groove;

[0024] 5, sealing washer; 6, limiting groove; 7, sealing ring. DETAILED DESCRIPTION

[0025] 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.

[0026] As shown in Figures 1 to 5 The utility model provides a kind of high wear-resistant gear groove disc head titanium alloy bolt, including bolt head 1, screw rod 2, nut 3, bolt head 1 fixedly connected screw rod 2, screw rod 2 is threadedly connected nut 3, nut 3 is connected with protective assembly 4, protective assembly 4 connects screw rod 2;

[0027] The protection assembly 4 comprises a hexagonal pipe body 401 fixedly connected at the bottom of the nut 3, a hexagonal cylinder body 402 movably connected with the hexagonal pipe body 401, the bottom end of the hexagonal pipe body 401 being arranged in the hexagonal cylinder body 402, a sealing ring 403 being arranged at the position close to the bottom of the outer side of the hexagonal pipe body 401, the sealing ring 403 being attached to the inner wall of the hexagonal cylinder body 402, a fastening screw 404 being arranged at the bottom of the hexagonal cylinder body 402, the fastening screw 404 being threadedly connected with the screw rod 2, the screw rod 2 at the bottom position of the nut 3 being wrapped, so as to avoid being eroded by various substances from the outside, prolong the service life of the bolt, and the protection assembly 4 connecting the screw rod 2 and the nut 3 can prevent the nut 3 from rotating relative to the screw rod 2 to a certain extent, which is beneficial to the use of the bolt.

[0028] Specifically, the bolt head 1 comprises a disc head body 101, an enlarged portion 102 being formed outwardly at the bottom position of the outer side of the disc head body 101, and a gear groove 103 being arranged at the top of the disc head body 101.

[0029] Further, a sealing washer 5 is arranged at the bottom of the bolt head 1 and is sleeved on the screw rod 2, so as to enhance the sealing strength between the bolt head 1 and the fastened part and avoid the penetration of corrosive substances into the screw rod 2.

[0030] Still further, a limiting groove 6 is arranged at the top of the nut 3, and a sealing ring 7 is arranged in the limiting groove 6, so as to enhance the sealing strength between the sealing ring 7 and the fastened part and avoid the penetration of corrosive substances into the screw rod 2.

[0031] It is worth noting that a through hole 405 is arranged at the bottom of the hexagonal cylinder body 402, and the rod body of the fastening screw 404 passes through the through hole 405.

[0032] It is worth noting that a threaded groove 406 is arranged at the bottom end face of the screw rod 2, and the threaded groove 406 is threadedly connected with the fastening screw 404.

[0033] Working principle and process: The titanium alloy itself has high hardness and strength, which provides a certain wear-resistant basis for the bolt. In the friction process, the surface of the titanium alloy can maintain good integrity and is not easy to be worn or scratched. After the screw rod 2 passes through the fastened part, the nut 3 is screwed onto the screw rod 2. After the nut 3 is connected with the screw rod 2, the end of the hexagonal pipe body 401 away from the nut 3 is inserted into the hexagonal cylinder body 402, and the sealing ring 403 is tightly attached to the inner wall of the hexagonal cylinder body 402. After the fastening screw 404 passes through the through hole 405 and is threadedly connected with the threaded groove 406, the hexagonal cylinder body 402 is fixed, the screw rod 2 at the bottom position of the nut 3 is wrapped, so as to avoid being eroded by various substances from the outside, prolong the service life of the bolt, and the protection assembly 4 connecting the screw rod 2 and the nut 3 can prevent the nut 3 from rotating relative to the screw rod 2 to a certain extent, which is beneficial to the use of the bolt. The sealing washer 5 and the sealing ring 7 can enhance the sealing property and reduce the erosion of the screw rod 2, which is beneficial to prolong the service life of the bolt.

[0034] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0035] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A high wear-resistant gear groove disc head titanium alloy bolt, comprising a bolt head (1), a screw (2), and a nut (3), characterized in that: The bolt head (1) is fixedly connected to the screw rod (2), the screw rod (2) is threadedly connected to the nut (3), the nut (3) is connected to the protective component (4), and the protective component (4) is connected to the screw rod (2); The protective component (4) includes a hexagonal tube (401) fixedly connected to the bottom of the nut (3), a hexagonal cylinder (402) movably connected to the hexagonal tube (401), the bottom end of the hexagonal tube (401) being located inside the hexagonal cylinder (402), a sealing ring (403) being provided on the outer side of the hexagonal tube (401) near the bottom, the sealing ring (403) fitting against the inner wall of the hexagonal cylinder (402), and a fastening screw (404) being provided at the bottom of the hexagonal cylinder (402), the fastening screw (404) being threadedly connected to the screw rod (2).

2. The high wear-resistant gear groove pan head titanium alloy bolt according to claim 1, characterized in that: The bolt head (1) includes a pan head body (101), an enlarged portion (102) is formed outward at the bottom of the outer side of the pan head body (101), and a gear groove (103) is provided on the top of the pan head body (101).

3. The high wear-resistant gear groove pan head titanium alloy bolt according to claim 1, characterized in that: A sealing washer (5) is provided at the bottom of the bolt head (1), and the sealing washer (5) is sleeved on the screw (2).

4. The high wear-resistant gear groove pan head titanium alloy bolt according to claim 1, characterized in that: The nut (3) has a limiting groove (6) at its top, and a sealing ring (7) is provided in the limiting groove (6).

5. The high wear-resistant gear groove disc head titanium alloy bolt according to claim 1, characterized in that: The bottom of the hexagonal cylindrical body (402) is provided with a through hole (405), and the rod of the fastening screw (404) passes through the through hole (405).

6. The high wear-resistant gear groove disc head titanium alloy bolt according to claim 1, characterized in that: The bottom end face of the screw (2) is provided with a threaded groove (406), and the threaded groove (406) is threadedly connected to a fastening screw (404).

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