Freezing joint bolt with high tensile strength

Abstract

The utility model discloses a high-tensile-strength freezing joint bolt, which relates to the technical field of joint bolts and comprises a bolt main body, a screw rod and a screw rod, the inner bolt is detachably inserted into the thread groove; the sealing assembly is fixed to the end of the inner bolt and connected with the end of the bolt body in a sealed mode. The outer sleeve is fixed on the sealing air assembly; the fastening assembly is limited and blocked through the cooperation of the inner bolt and the outer side sleeve, the use stability of the joint bolt can be guaranteed when the fastening assembly is loosened after being used for a long time, connection loosening or falling of the joint bolt cannot be caused, meanwhile, external force received by the fastening assembly can be shared when the joint bolt is used in ordinary times, and the service life of the joint bolt is prolonged. The service life of the fastening assembly is prolonged; connection of the inner bolt and the threaded groove is sealed through the arrangement of the sealing assembly, the influence of external factors on threaded connection of the inner bolt is reduced, meanwhile, the connection stability of the inner bolt is improved, and the service life of the inner bolt is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of joint bolt, especially relates to a high tensile strength frozen joint bolt. BACKGROUND

[0002] In the field of engineering construction, especially in the structure connection scene needing to bear large tensile force, such as shaft wall connection in mine shaft freezing method construction, key node connection of large bridge and the like, the performance requirement of joint bolt is extremely strict. When facing the demand of high tensile strength, the traditional joint bolt exposes many drawbacks.

[0003] The fastening assembly of conventional joint bolt is prone to loosening in the long-term use process under the influence of frequent vibration, alternating load and complex environmental factors, once the fastening assembly loosens, the connection stability of joint bolt is greatly discounted, and the joint bolt connection part even falls off in severe cases, thereby causing major safety accidents.

[0004] Therefore, it is necessary to invent a high tensile strength frozen joint bolt to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a high tensile strength frozen joint bolt to solve the problem that the fastening assembly is prone to loosening in the long-term use process under the influence of frequent vibration, alternating load and complex environmental factors in the background art, once the fastening assembly loosens, the connection stability of joint bolt is greatly discounted, and the joint bolt connection part even falls off in severe cases, thereby causing major safety accidents.

[0006] To achieve the above object, the utility model provides the following technical scheme: a high tensile strength frozen joint bolt, comprising:

[0007] The bolt main body is provided with a threaded groove at one end;

[0008] The inner bolt is detachably inserted into the inside of the threaded groove;

[0009] The sealing assembly is fixed at the end of the inner bolt and is in sealing connection with the end of the bolt main body;

[0010] The outer sleeve is fixed on the sealing air assembly and is sleeved on the outside of the bolt main body;

[0011] The fastening assembly is sleeved on the outside of the bolt main body and is connected with the outer sleeve.

[0012] Optionally, the bolt main body is provided with a sealing groove concentrically arranged with the threaded groove at one end, and the bolt main body is fixedly provided with a hexagonal flange nut at the other end.

[0013] Optionally, the sealing assembly comprises:

[0014] The receiving plate is in contact with one end of the bolt body.

[0015] The limiting protrusion is fixed on the receiving plate and inserted into the sealing groove to be fixedly connected with the inner bolt.

[0016] The first sealing gasket is bonded on the outer side of the limiting protrusion and in sealing contact with the inner wall of the sealing groove.

[0017] Optionally, the outer sleeve comprises:

[0018] The threaded sleeve is fixed on one side of the receiving plate and detachably sleeved on the outer side of the bolt body.

[0019] The outer cylinder is sleeved on the outer side of the threaded sleeve and in interference fit with the threaded sleeve and connected with the fastening assembly.

[0020] The second sealing gasket is bonded on the end of the outer cylinder and in extrusion with the fastening assembly.

[0021] Optionally, the inner surface of the outer cylinder is provided with a first threaded connecting part adapted to the fastening assembly.

[0022] Optionally, the fastening assembly comprises:

[0023] The nut body is sleeved on the outer side of the bolt body and in sealing contact with the second sealing gasket.

[0024] The center cylinder is fixed on the nut body and located between the outer cylinder and the bolt body.

[0025] Optionally, the inner surface and the outer surface of the center cylinder are provided with second threaded connecting parts respectively screwed with the first threaded connecting part and the bolt body.

[0026] Optionally, the outer side of the bolt body is provided with two flat washers respectively in contact with the nut body and the hexagonal flange nut.

[0027] The technical effects and advantages of the utility model are as follows:

[0028] 1、 the utility model discloses a bolt body and the cooperation of outer sleeve to the fastening assembly position blocking, in fastening assembly long time use loosening also can guarantee the stability of joint bolt use, will not lead to joint bolt's connection loosening or falling, also can share the external force received by fastening assembly when usually using, increase the service life of fastening assembly.

[0029] 2、The utility model discloses a sealing assembly is set up and is sealed to the connection of inner bolt and thread groove, reduces the influence of external factor to the thread connection of inner bolt, increases the connection stability and service life of inner bolt simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the structure schematic diagram of the utility model;

[0031] Figure 2 It is the internal schematic diagram of the structure of the utility model;

[0032] Figure 3 It is the bolt main body structure schematic diagram of the utility model;

[0033] Figure 4 It is the external sleeve structure schematic diagram of the utility model;

[0034] Figure 5 It is the sealing assembly structure schematic diagram of the utility model.

[0035] In the drawing: 100, bolt main body;110, thread groove;120, sealing groove;130, hexagonal flange nut;140, flat washer;

[0036] 200, inner bolt;

[0037] 300, sealing assembly;310, bearing plate;320, limit protrusion;330, first sealing gasket;

[0038] 400, external sleeve;410, thread sleeve;420, outer cylinder;430, second sealing gasket;440, first threaded connection part;

[0039] 500, fastening assembly;510, nut main body;520, center cylinder;530, second threaded connection part. DETAILED DESCRIPTION

[0040] 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, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0041] The utility model provides a kind of high tensile strength frozen joint bolt as shown in Figures 1-5 Including:

[0042] The bolt body 100 is provided with a threaded groove 110 at one end, and a sealing groove 120 concentrically arranged with the threaded groove 110 is provided at the other end of the bolt body 100. The concentric arrangement can ensure that the sealing element can uniformly contact the bolt body 100 and the matched component during installation, thereby effectively preventing the leakage of liquid, gas and other media. The other end of the bolt body 100 is fixedly provided with a hexagonal flange nut 130. The hexagonal shape facilitates tightening and dismounting operation by using corresponding tools. The design of the flange increases the contact area between the nut and the connected component, which can effectively disperse the pressure and prevent damage to the connected component during tightening. Two flat washers 140 are arranged on the outer side of the bolt body 100. The two flat washers 140 are in contact with the fastening assembly 500 and the hexagonal flange nut 130 respectively, which can better disperse the pressure generated when the hexagonal flange nut 130 is tightened, and also protect the contact surface of the hexagonal flange nut 130 from wear or deformation during tightening and use.

[0043] The inner bolt 200 is detachably inserted into the threaded groove 110. During insertion, the operator needs to use appropriate tools to screw the inner bolt 200 into the threaded groove 110 according to the specified torque, to ensure that the threads between the two are tightly matched to form a firm connection. The detachable design makes it more convenient to maintain or replace components, improving the maintainability of the entire device.

[0044] The sealing assembly 300 is fixed to the end of the inner bolt 200 and is in sealed connection with the end of the bolt body 100, forming a reliable sealing interface to prevent dust, moisture and other impurities from the outside from entering the connection part, thereby ensuring the stability and reliability of the connection.

[0045] The outer sleeve 400 is fixed to the sealing assembly 300 and is sleeved on the outer side of the bolt body 100, maintaining a proper gap between the outer side surface of the bolt body 100, which can ensure smoothness of the sleeve and provide a certain buffering effect to reduce the impact of vibration and impact on the connection part.

[0046] The fastening assembly 500 is sleeved on the outer side of the bolt body 100 and connected with the outer sleeve 400. The use of the washer can disperse the pressure of the nut and protect the surface of the outer sleeve 400 from being damaged.

[0047] During use, the fastening assembly 500 is installed on the outer side of the bolt body 100, and then the length of the outer sleeve 400 is adjusted according to the position of the fastening assembly 500. Then the inner bolt 200 is inserted into the threaded groove 110, and the outer sleeve 400 drives the fastening assembly 500 to be limited by the sealing assembly 300.

[0048] The fastening assembly 500 is limited and blocked by the cooperation of the inner bolt 200 and the outer sleeve 400, the stability of the joint bolt in use can be ensured, the joint bolt is not loose or dropped, external force received by the fastening assembly 500 can be shared in normal use, and the service life of the fastening assembly 500 is prolonged.

[0049] The connection of the inner bolt 200 and the threaded groove 110 is sealed by the sealing assembly 300, the threaded connection of the inner bolt 200 is affected by external factors, the connection stability and the service life of the inner bolt 200 are improved, and the connection of the inner bolt 200 and the threaded groove 110 is sealed.

[0050] In some embodiments of the utility model, the sealing assembly 300 includes:

[0051] The receiving plate 310 is in close contact with one end of the bolt main body 100 during installation, evenly disperses the force transmitted by the bolt main body 100, and avoids damage to the receiving plate 310 or the bolt main body 100 caused by local stress concentration;

[0052] The limiting protrusion 320 is fixed on the receiving plate 310 and is inserted into the inner sealing groove 120 and fixedly connected with the inner bolt 200, the displacement or loosening of the sealing assembly 300 during use is effectively prevented through the fixed connection of the limiting protrusion 320 and the inner bolt 200, and the reliability of the entire sealing system is ensured.

[0053] The first sealing gasket 330 is bonded on the outer side of the limiting protrusion 320 and is in sealing contact with the inner wall of the sealing groove 120, the first sealing gasket 330 can be deformed to a certain extent during contact due to good elasticity, thereby filling the small gap between the inner wall of the sealing groove 120 and the limiting protrusion 320, achieving good sealing effect, and effectively preventing the intrusion of external substances.

[0054] During installation, the receiving plate 310 is in close contact with one end of the bolt main body 100, the size and shape of the limiting protrusion 320 are matched with the internal structure of the sealing groove 120, the limiting protrusion 320 is accurately inserted into the inner sealing groove 120 during installation, and the first sealing gasket 330 is in sealing contact with the inner wall of the sealing groove 120 after the limiting protrusion 320 is inserted into the inner sealing groove 120.

[0055] In some embodiments of the utility model, the outer sleeve 400 includes:

[0056] The threaded sleeve 410 is fixed on one side of the receiving plate 310 and detachably sleeved on the outside of the bolt body 100, and is connected through threads, which not only ensures the tightness of the connection, but also facilitates the disassembly operation when maintenance or replacement of parts is required.

[0057] The outer cylinder 420 is sleeved on the outside of the threaded sleeve 410 and is in interference fit with the threaded sleeve 410 and connected with the fastening assembly 500.

[0058] The second sealing gasket 430 is bonded to the end of the outer cylinder 420 and is pressed against the fastening assembly 500, and the second sealing gasket 430 is pressed against the fastening assembly 500 to fill the small gap therebetween, prevent liquids, gases or dust and other substances from entering the mechanical structure, and play a good sealing effect, effectively protect the normal operation of the internal parts, and prolong the service life of the entire device.

[0059] The inner surface of the outer cylinder 420 is provided with a first threaded connection part 440 matched with the fastening assembly 500.

[0060] In the assembly process, a special process needs to be used, such as heating the outer cylinder 420 to expand, and then quickly sleeving on the threaded sleeve 410, and after cooling, the outer cylinder 420 will tightly clamp on the threaded sleeve 410, thereby realizing the tight fit.

[0061] In some embodiments of the utility model, the fastening assembly 500 comprises:

[0062] The nut body 510 is sleeved on the outside of the bolt body 100 and in sealing contact with the second sealing gasket 430, which can effectively prevent dust, moisture and other impurities from the outside from entering the connection part, thereby ensuring the stability and reliability of the connection structure, and also avoiding the corrosion and damage of the bolt and nut caused by the invasion of impurities;

[0063] The center cylinder 520 is fixed on the nut body 510 and located between the outer cylinder 420 and the bolt body 100, which can form a relatively stable structural system with the outer cylinder 420 and the bolt body 100, and improve the structural strength and stability of the entire connection part.

[0064] The inner surface and the outer surface of the center cylinder 520 are provided with a second threaded connection part 530 respectively screwed with the first threaded connection part 440 and the bolt body 100.

[0065] Wherein, in the installation, bolt body 100 can be smoothly into the second screw thread connection site 530 of the outer surface of the center tube 520, with the continuous tightening of the bolt, can produce strong pre-tightening force, the relevant components are connected together tightly, prevent loose or displacement during mechanical operation, so as to guarantee the normal operation of the entire mechanical system.

[0066] The working method of the utility model:

[0067] First, the inner bolt 200 is screwed into the threaded groove 110 at one end of the bolt body 100, ensuring that the two are in close thread cooperation. Next, the sealing assembly 300 is installed at the end of the inner bolt 200, so that the limiting protrusion 320 is accurately inserted into the sealing groove 120, and the receiving plate 310 is fixed. Then, the threaded sleeve 410 of the outer sleeve 400 is sleeved on the bolt body 100 and fixedly connected with the receiving plate 310, and the outer cylinder 420 is then installed in interference fit on the outer side of the threaded sleeve 410. After that, the center tube 520 of the fastening assembly 500 is screwed with the first threaded connection site 440 of the outer cylinder 420 and the bolt body 100 through the second threaded connection site 530, and the nut body 510 is in close contact with the second sealing gasket 430. Finally, the flat washer 140 is installed at both ends of the bolt body 100, and the hexagonal flange nut 130 is tightened, completing the assembly of the entire bolt.

[0068] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A high tensile strength freeze joint bolt characterized by, The utility model relates to a high tensile strength frozen joint bolt, including: The bolt body (100) one end is provided with the thread groove (110); The inner bolt (200) is detachable inserted to the inside of thread groove (110); The sealing assembly (300) is fixed at the end of inner bolt (200) and is sealedly connected with the end of bolt body (100); The outside sleeve (400) is fixed on the sealing assembly (300) and is sleeved on the outside of bolt body (100); Fastening assembly (500) is sleeved on the outside of bolt body (100) and is connected with outside sleeve (400).

2. The high tensile strength frozen joint bolt according to claim 1, wherein: The bolt body (100) one end is provided with the sealing groove (120) of concentric arrangement with thread groove (110), and the other end of bolt body (100) is fixedly installed with hex flange nut (130).

3. The high tensile strength frozen joint bolt according to claim 2, wherein: The sealing assembly (300) includes: The receiving plate (310) is in contact with one end of bolt body (100); The limiting protrusion (320) is fixed on the receiving plate (310) and is inserted into the inside of sealing groove (120) and is fixedly connected with inner bolt (200); The first sealing gasket (330) is bonded on the outside of limiting protrusion (320) and is in sealing contact with the inner wall of sealing groove (120).

4. The high tensile strength frozen joint bolt according to claim 3, wherein: The outside sleeve (400) includes: The threaded sleeve (410) is fixed on one side of the receiving plate (310) and is detachably sleeved on the outside of the bolt body (100); The outer cylinder (420) is sleeved on the outside of the threaded sleeve (410) and is interference-fitted with the threaded sleeve (410), and is connected with the fastening assembly (500); The second sealing gasket (430) is bonded at the end of the outer cylinder (420) and is pressed against the fastening assembly (500).

5. The high tensile strength frozen joint bolt according to claim 4, wherein: A first threaded connection part (440) is provided on the inner surface of the outer cylinder (420) and is adapted to the fastening assembly (500).

6. The high tensile strength frozen joint bolt according to claim 5, wherein: The fastening assembly (500) includes: The nut body (510) is sleeved on the outside of the bolt body (100) and is in sealing contact with the second sealing gasket (430); The center cylinder (520) is fixed on the nut body (510) and is located between the outer cylinder (420) and the bolt body (100).

7. The high tensile strength frozen joint bolt according to claim 6, wherein: The inner surface and the outer surface of the center cylinder (520) are provided with a second threaded connection part (530) respectively screwed with the first threaded connection part (440) and the bolt body (100).

8. The high tensile strength frozen joint bolt according to claim 5, wherein: The outer side of the bolt body (100) is provided with two flat washers (140), and the two flat washers (140) are respectively in contact with the nut body (510) and the hexagonal flange nut (130).

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