CN114922288B - Bolt ball joint connecting structure of steel net rack - Google Patents

Bolt ball joint connecting structure of steel net rack Download PDF

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Publication number
CN114922288B
CN114922288B CN202210703661.5A CN202210703661A CN114922288B CN 114922288 B CN114922288 B CN 114922288B CN 202210703661 A CN202210703661 A CN 202210703661A CN 114922288 B CN114922288 B CN 114922288B
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China
Prior art keywords
bolt
screw
bolt ball
fixedly connected
mesh frame
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Active
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CN202210703661.5A
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Chinese (zh)
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CN114922288A (en
Inventor
王英杰
李光洲
刘春委
孙鹏
孙营营
郭峰波
岳文波
陈阳阳
梁珂
刘君
刘晓瑞
侯卫东
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City Construction Co Ltd Of China Railway 15th Bureau Group
China Railway 15th Bureau Group Co Ltd
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City Construction Co Ltd Of China Railway 15th Bureau Group
China Railway 15th Bureau Group Co Ltd
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Priority to CN202210703661.5A priority Critical patent/CN114922288B/en
Publication of CN114922288A publication Critical patent/CN114922288A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B1/1903Connecting nodes specially adapted therefor
    • E04B1/1906Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/1957Details of connections between nodes and struts
    • E04B2001/196Screw connections with axis parallel to the main axis of the strut

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The invention discloses a steel mesh frame bolt ball joint connecting structure, wherein a high-strength bolt comprises two coaxially arranged screw rods, the end parts of the screw rods are fixedly provided with bolt heads, the two bolt heads are fixedly connected, one side of each bolt head, which is away from the screw rod, is provided with a positioning half hole, and after the two bolt heads are fixedly connected, the two positioning half holes are buckled to form a positioning hole. The steel mesh frame bolt ball node connecting structure can be used for quickly connecting the bolt balls, the steel pipes and the stud bolts, is simple and convenient to operate, and is quite convenient to maintain and screw the loosened high-strength bolts in the later period without disassembling the steel pipes.

Description

Bolt ball joint connecting structure of steel net rack
Technical Field
The invention relates to the field of steel mesh frame structures, in particular to a steel mesh frame bolt ball joint connection structure.
Background
The bolt ball node net frame is a steel structure net frame commonly used in steel members, most of the members can be prefabricated in a factory, the bolt ball node net frame can be assembled on site only by transporting the bolt ball node net frame, and the bolt ball node net frame is simple, convenient and fast to install, time-saving and labor-saving, and is very suitable for being adopted in places with short construction period and simple construction conditions.
In the prior art, the connection between the bolt ball and the steel pipe is usually carried out by adopting a bolt, the bolt head is positioned in the steel pipe, one end of the screw rod, which is far away from the bolt head, extends out from the end part of the steel pipe and is inserted into the bolt ball to be fixedly connected with the bolt ball in a spiral way, and the bolt ball and the steel pipe are fixedly connected together through the bolt. The connection mode is simple, convenient and quick in construction, the connection firmness is low, the steel pipe is offset relative to the bolt ball under the action of self gravity, the steel pipe is rocked on the connecting bolt, after all, the end part of the steel pipe is firmly connected with the bolt ball by the connecting bolt, the bolt head is not limited in any axial direction of the steel pipe, once the steel pipe is offset relative to the bolt ball, the steel pipe is rocked relative to the bolt head, the end part of the steel pipe loses a supporting point which is pressed and abutted against the bolt ball, at the moment, even if the bolt is still fixedly connected with the bolt ball, the steel pipe still can shake, and the safety of the steel structure net rack is endangered.
Disclosure of Invention
The invention mainly aims to provide a steel mesh frame bolt ball node connecting structure, which aims to solve the problems that the prior steel mesh frame bolt ball node connecting structure in the background art is weak in firmness and reliability, and steel pipe shaking easily occurs to endanger the safety of a steel mesh frame.
In order to solve the problems, the high-strength bolt provided by the invention comprises two coaxially arranged screw rods, wherein the end parts of the screw rods are fixedly provided with bolt heads, the two bolt heads are fixedly connected, one side of each bolt head, which is away from the screw rod, is provided with a positioning half hole, and after the two bolt heads are fixedly connected, the two positioning half holes are buckled to form a positioning hole.
In one embodiment, the two screw heads are connected by means of a connecting pin.
In addition, in order to solve the problems, the invention also provides a steel mesh frame bolt ball joint connecting structure which comprises a bolt ball, a conical head and the high-strength bolt, wherein threaded holes are formed in the surface of the bolt ball and the end part of the conical head, a screw barrel is sleeved outside the screw, and the screw barrel can be screwed into the threaded holes of the bolt ball or the conical head.
In one embodiment, one end of the screw cylinder, which is close to the bolt head, is coaxially and fixedly provided with an end fluted disc I;
the fixed ring is rotatably connected with the screw rod in a rotating mode, a plurality of sliding rods are fixedly arranged on the fixed ring along the axial direction, the movable ring is sleeved on the sliding rods in a sliding mode, an end fluted disc II is coaxially and fixedly arranged on the movable ring, an end fluted disc III is coaxially and fixedly arranged on the fixed ring, the fixed ring is elastically connected with the movable ring through a spring, and the spring extends along the length direction of the sliding rods and is used for pushing the movable ring to slide along the sliding rods so that the end fluted disc II is kept meshed with the end fluted disc I.
In one embodiment, a rotating shaft is rotatably installed in the positioning hole, a gear which is in three-engagement with end tooth plates on the two screws is sleeved on the rotating shaft, and the rotation of the gear can drive screw barrels on the two screws to be close to or far from each other.
In one embodiment, the rotating shaft comprises a cylinder and a prism which are coaxially and fixedly connected, and the gear is sleeved on the prism in a sliding manner.
In one embodiment, the bolt ball and the threaded hole on the conical head have equal hole depths;
the distance between the bolt ball and the conical head is equal to the axial length of the high-strength bolt.
In an embodiment, the screw cylinder outer axial sliding sleeve is provided with a protective cylinder, the two protective cylinders are detachably and fixedly connected, and the protective cylinder is provided with a through hole for the rotating shaft to penetrate.
In an embodiment, an annular chute coaxial with the screw cylinder is arranged on the inner wall of the protective cylinder, and one end of the plurality of sliding rods, which is far away from the fixed ring, extends into the annular chute and can slide along the annular chute.
The beneficial effects are that: the high-strength bolt is designed in such a way that the stud bolt is fixedly connected with the bolt ball and the steel pipe through threads, and even if the steel pipe deviates from the bolt ball, the bolt ball and the steel pipe are still fixedly connected with the stud bolt respectively, so that the steel pipe cannot shake, and the safety of the steel structure net rack is ensured;
the steel mesh frame bolt ball node connecting structure can be used for quickly connecting the bolt balls, the steel pipes and the stud bolts, is simple and convenient to operate, and is quite convenient to maintain and screw the loosened high-strength bolts in the later period without disassembling the steel pipes.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a high strength bolt of the present invention;
FIG. 2 is a schematic view of the steel mesh frame bolted ball joint connection structure of the present invention;
FIG. 3 is a front view of the steel cage bolt ball node connection structure of the present invention;
fig. 4 is an enlarged view of a portion B in fig. 3;
FIG. 5 is a cross-sectional view of C-C in FIG. 3;
FIG. 6 is a D-D sectional view of FIG. 3;
fig. 7 is an enlarged view of a portion a in fig. 6;
FIG. 8 is a schematic view of the construction of a casing of the present invention;
fig. 9 is a connection schematic diagram of the steel mesh frame bolt ball joint connection structure of the present invention.
The reference numerals are explained as follows:
1. a screw; 2. a bolt head; 3. a connecting pin; 4. a screw cylinder; 5. an end fluted disc I; 6. an end fluted disc II; 7. a movable ring; 8. a slide bar; 9. a fixing ring; 10. a spring; 11. an end fluted disc III; 12. a gear; 13. a hexagonal prism; 14. a cylinder; 15. a right protective barrel; 16. a left pile casing; 17. a through hole; 18. an annular chute; 19. a plug pin; 20. a bolt ball; 21. a first threaded hole; 22. a steel pipe; 23. a threaded hole II; 24. positioning a half hole; 25. a conical head; 26. and positioning holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a high-strength bolt, which adopts a stud bolt to be fixedly connected with a bolt ball 20 and a steel pipe 22 through threads, so that even if the steel pipe 22 deviates relative to the bolt ball 20, the bolt ball 20 and the steel pipe 22 are respectively fixedly connected with the stud bolt, the steel pipe 22 cannot shake, and the safety of a steel structure net rack is ensured.
In an embodiment of the invention, as shown in fig. 1, the high-strength bolt includes two coaxially arranged screws 1, the end parts of the screws 1 are fixedly provided with bolt heads 2, the two bolt heads 2 are fixedly connected, one side of the bolt heads 2, which is away from the screws 1, is provided with a positioning half hole 24, and after the two bolt heads 2 are fixedly connected, the two positioning half holes 24 are buckled to form a positioning hole 26.
Further, in this embodiment, as shown in fig. 6 and 7, the two bolt heads 2 are fixedly connected by the connecting pin 3 in an inserted manner, so that the common single-head high-strength bolt is conveniently manufactured into the high-strength stud bolt of this embodiment after simple processing, which is beneficial to reducing the cost.
In addition, in order to solve the above-mentioned problems, the present invention further provides a steel mesh frame bolt ball joint connection structure, which includes a bolt ball 20, a conical head 25 and the aforementioned high strength bolt, as shown in fig. 9, the conical head 25 and one end of the steel pipe 22 are integrally formed, the surface of the bolt ball 20 and the end of the conical head 25 are both provided with threaded holes, the threaded holes are blind holes, for convenience of description, the threaded holes on the bolt ball 20 in fig. 9 are denoted as threaded holes one 21, and the threaded holes on the conical head 25 are denoted as threaded holes two 23.
In this embodiment, as shown in fig. 2, 3, 6 and 7, the outer screw sleeve of the screw 1 is provided with the screw barrel 4, the high-strength bolt is controlled to be fixed, then the screw barrel 4 is rotated to enable the two screw barrels 4 on the high-strength bolt to be mutually far away, as shown in fig. 9, as the screw barrel 4 continuously rotates in the same direction, the screw barrel 4 at the left end moves left and can be screwed into the first threaded hole 21 on the bolt ball 20, the screw barrel 4 at the left end is fixedly connected with the bolt ball 20 in a threaded manner through the first threaded hole 21, the screw barrel 4 at the right end moves right and can be screwed into the second threaded hole 23 of the conical head 25, the screw barrel 4 at the right end is fixedly connected with the steel tube 22 in a threaded manner through the second threaded hole 23, and the two screw barrels 4 are fixedly connected with the screw rod 1 of the high-strength bolt in a threaded manner, so that the high-strength bolt is fixedly connected with the bolt ball 20 and the steel tube 22 in a threaded manner, and even if the screw tube 22 is offset relative to the bolt ball 20 in the later stage, the screw ball 20 and the steel tube 22 are respectively kept in threaded connection with the bolt ball 4 through the screw barrel 4, so that the double-headed steel net frame structure cannot be guaranteed.
In this embodiment, the inner wall and the outer wall of the screw cylinder 4 are both threaded, the internal thread is used for screwing and fixing with the screw 1, and the external thread is used for screwing and fixing with the threaded hole.
In this embodiment, as shown in fig. 6 and 7, one end of the two screw cylinders 4, which is close to the bolt head 2, is fixedly provided with an end tooth disc one 5, the central axis of the end tooth disc one 5 coincides with the central axis of the screw cylinder 4, and the screw cylinder 4 can be driven to rotate by the rotation of the end tooth disc one 5 to adjust the distance between the two screw cylinders 4.
In this embodiment, as shown in fig. 6 and 7, one end of the two screws 1 near the bolt head 2 is sleeved with a fixed ring 9 and a movable ring 7, the fixed ring 9 and the movable ring 7 are coaxially arranged with the screws 1, the movable ring 7 is located between the fixed ring 9 and the screw cylinder 4, the fixed ring 9 is only rotationally connected with the screws 1 and cannot axially slide along the screws 1, that is, the fixed ring 9 can only rotate, the movable ring 7 is rotationally and slidably connected with the screws 1, that is, the movable ring 7 can rotate or axially slide along the screws 1, a plurality of slide bars 8 are fixedly arranged on the fixed ring 9 along the axial direction of the screws 1, the movable ring 7 is slidingly sleeved on the slide bars 8 so that the movable ring 7 can axially slide along the slide bars 8 smoothly, and the fixed ring 9 rotates through the plurality of slide bars 8 to drive the movable ring 7 to rotate synchronously, preferably, as shown in fig. 5, the plurality of slide bars 8 are distributed on the fixed ring 9 in a central symmetry mode, so that the sliding property of the movable ring 7 can be improved.
In this embodiment, as shown in fig. 7, the movable ring 7 is fixedly provided with a second end toothed disc 6, the second end toothed disc 6 and the movable ring 7 are coaxially arranged with the first end toothed disc 5, the second end toothed disc 6 can be meshed with the first end toothed disc 5, the fixed ring 9 is fixedly provided with a third end toothed disc 11, the third end toothed disc 11 and the fixed ring 9 are coaxially arranged, a compressed spring 10 is arranged between the fixed ring 9 and the movable ring 7, the spring 10 can extend or compress along the length direction of the slide rod 8, as shown in fig. 7, the compressed spring 10 can push the movable ring 7 to slide along the slide rod 8 to be away from the fixed ring 9, and then the second end toothed disc 6 can be permanently meshed with the first end toothed disc 5.
In this embodiment, the fixed ring 9 rotates to drive the screw cylinder 4 to rotate through the movable ring 7, and even if the screw cylinder 4 is gradually far away from or near to the fixed ring 9 after the screw cylinder 4 rotates, the existence of the compressed spring 10 ensures that the movable ring 7 can synchronously move along with the screw cylinder 4, so as to ensure that the end fluted disc two 6 is always meshed with the end fluted disc one 5.
Preferably, the compressed spring 10 is slipped on the sliding rod 8, one end of the spring 10 is connected with the fixed ring 9, and the other end is connected with the movable ring 7.
In this embodiment, as shown in fig. 7, a rotating shaft is rotatably installed in the positioning hole 26, a gear 12 meshed with the end tooth plates three 11 on the two screw rods 1 is sleeved on the rotating shaft, the gear 12 can rotate to drive the two end tooth plates three 11 to rotate, the end tooth plates three 11 drive the fixing ring 9 to rotate, then the movable ring 7 drives the screw cylinders 4 to rotate, the screw cylinders 4 on the two screw rods 1 are enabled to approach or depart from each other, the trouble of rotating the fixing ring 9 one by one is omitted, the two screw cylinders 4 can be enabled to approach or depart from each other simultaneously through rotating the rotating shaft, the installation of the steel mesh frame bolt ball node connecting structure is simpler, the bolt balls 20 and the steel pipes 22 can be fast and fixedly connected with the double-headed bolts, time and labor are saved, and the practicality is good.
Preferably, in order to make the rotation of the rotation shaft enable the two screw barrels 4 to be screwed in place with the threaded holes on the bolt ball 20 and the conical head 25 at the same time, the hole depths of the threaded holes on the bolt ball 20 and the conical head 25 are equal, and the distance between the bolt ball 20 and the conical head 25 is equal to the axial length of the high-strength bolt, as shown in fig. 9, the design is such that after the high-strength bolt of the embodiment is arranged on the connecting line of the first threaded hole 21 and the second threaded hole 23 and the high-strength bolt and the first threaded hole 21 are coaxial, the distance between the rotation shaft and the first threaded hole 21 and the second threaded hole 23 are equal, then the rotation shaft drives the two screw barrels 4 to be screwed into the first threaded hole 21 and the second threaded hole 23 at the same time and simultaneously collide with the bottoms of the first threaded hole 21 and the second threaded hole 23 to complete the connection and installation of the steel mesh frame bolt ball joint structure, and the rotation shaft is reversely rotated during the later assembly and disassembly, and the operation are simple, convenient and fast, time saving and labor.
After the steel mesh frame bolt ball node connecting structure of the embodiment is used for a period of time, if the steel tube 22 is found to deviate relative to the bolt ball 20 in inspection maintenance, the rotatable rotating shaft enables the screw cylinder 4 to be in contact with the hole bottom of the threaded hole, the steel tube 22 does not need to be detached, and the steel mesh frame bolt ball node connecting structure is quite convenient.
In this embodiment, as shown in fig. 4, fig. 6 and fig. 7, the rotating shaft includes a cylinder 14 and a prism which are coaxially and fixedly connected, the gear 12 is slid on the prism, the cylinder 14 is rotatably installed in the positioning hole 26, preferably, the prism shown in fig. 4 is a hexagonal prism 13, in this design, after the steel mesh frame bolt ball node connecting structure of this embodiment is installed and connected, the rotating shaft can be removed, when the distance between two screw barrels 4 needs to be adjusted next time, the rotating shaft penetrates through the gear 12 and is inserted into the positioning hole 26, correspondingly, the rotating shaft can be fixedly connected with the tool bit of the electric screwdriver, and when the distance between two screw barrels 4 needs to be adjusted each time, the electric screwdriver can conveniently and rapidly adjust the screw barrels 4 into place by means of the rotating shaft.
Further, in this embodiment, as shown in fig. 2, 3 and 6, the outer axial sliding sleeve of the screw cylinder 4 is provided with two protection cylinders, and the two protection cylinders wrap the screw head 2, the fixed ring 9, the movable ring 7, the spring 10, the sliding rod 8, the first end tooth disc 5, the second end tooth disc 6 and the third end tooth disc 11 to be separated from the outside, so as to prevent the foreign objects from damaging the above components, and at this time, as shown in fig. 4, the protection cylinders are provided with through holes 17 for the rotating shaft to penetrate.
In this embodiment, two casings are detachably and fixedly connected, for example, as shown in fig. 7 and 8, the two casings are respectively recorded as a left casing 16 and a right casing 15, a plurality of bolts 19 are provided on the left end face of the right casing 15, a jack into which the bolts 19 are inserted is provided on the right end face of the left casing 16, and the left casing 16 and the right casing 15 are detachably and fixedly connected through the bolts 19.
Further, in this embodiment, as shown in fig. 8, the inner wall of the casing is provided with an annular chute 18 coaxial with the screw cylinder 4, and one end of the plurality of sliding rods 8 away from the fixed ring 9 extends into the annular chute 18 and can slide along the annular chute 18, so that the limit of the sliding rods 8 is further improved, and the sliding rods 8 are not easy to swing and deviate in the process of driving the movable ring 7 to rotate by the fixed ring 9.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (5)

1. The steel mesh frame bolt ball joint connecting structure is characterized by comprising a bolt ball, a conical head and a high-strength bolt, wherein the high-strength bolt comprises two coaxially arranged screw rods, the end parts of the screw rods are fixedly provided with the bolt heads, the two bolt heads are fixedly connected, one side, away from the screw rods, of each bolt head is provided with a positioning half hole, and after the two bolt heads are fixedly connected, the two positioning half holes are buckled to form a positioning hole;
the two bolt heads are fixedly connected in an inserting way through a connecting pin;
screw holes are formed in the surface of the bolt ball and the end part of the conical head, a screw barrel is sleeved outside the screw rod, and the screw barrel can be screwed into the screw holes of the bolt ball or the conical head;
one end of the screw cylinder, which is close to the bolt head, is coaxially and fixedly provided with an end fluted disc I; the fixed ring is rotatably connected with the screw rod in a rotating way, the movable ring is rotatably connected with the screw rod in a sliding way, a plurality of sliding rods are fixedly arranged on the fixed ring along the axial direction, the movable ring is sleeved on the sliding rods in a sliding way, an end fluted disc II is coaxially and fixedly arranged on the movable ring, an end fluted disc III is coaxially and fixedly arranged on the fixed ring, the fixed ring is elastically connected with the movable ring through a spring, and the spring extends along the length direction of the sliding rods and is used for pushing the movable ring to slide along the sliding rods so that the end fluted disc II is kept meshed with the end fluted disc I;
the rotary shaft is rotatably arranged in the positioning hole, gears which are in three-engagement with end tooth plates on the two screws are sleeved on the rotary shaft, and the gears can drive screw barrels on the two screws to approach or depart from each other.
2. The steel mesh frame bolt ball joint connection structure according to claim 1, wherein the rotating shaft comprises a cylinder and a prism which are coaxially and fixedly connected, and the gear is sleeved on the prism in a sliding manner.
3. The steel mesh frame bolt ball joint connection structure according to claim 1, wherein the hole depths of the threaded holes on the bolt ball and the conical head are equal; the distance between the bolt ball and the conical head is equal to the axial length of the high-strength bolt.
4. The steel mesh frame bolt ball joint connection structure according to claim 1, wherein the screw cylinder is axially sleeved with a protective cylinder, the two protective cylinders are detachably and fixedly connected, and the protective cylinder is provided with a through hole for a rotating shaft to penetrate.
5. The steel mesh frame bolt ball joint connection structure according to claim 4, wherein the inner wall of the protective cylinder is provided with an annular chute coaxial with the screw cylinder, and one end of the plurality of sliding rods far away from the fixed ring extends into the annular chute and can slide along the annular chute.
CN202210703661.5A 2022-06-21 2022-06-21 Bolt ball joint connecting structure of steel net rack Active CN114922288B (en)

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CN202210703661.5A CN114922288B (en) 2022-06-21 2022-06-21 Bolt ball joint connecting structure of steel net rack

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Application Number Priority Date Filing Date Title
CN202210703661.5A CN114922288B (en) 2022-06-21 2022-06-21 Bolt ball joint connecting structure of steel net rack

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CN114922288B true CN114922288B (en) 2023-05-02

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212079903U (en) * 2020-04-27 2020-12-04 杭州嘉翔高强螺栓股份有限公司 High-strength anti-skid bolt
CN113915220A (en) * 2021-10-08 2022-01-11 张东 High-strength bolt for steel net frame bolt ball joint

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Publication number Priority date Publication date Assignee Title
DE4312127A1 (en) * 1993-04-14 1994-10-20 Armin Mylaeus Simplified junction connection for three-dimensional frameworks formed from tubes
JP3129208B2 (en) * 1996-10-02 2001-01-29 三協アルミニウム工業株式会社 Struts and structural members
CN107761948A (en) * 2016-08-15 2018-03-06 徐俊鸽 A kind of bolted spherical node steel mesh frame connecting structure
CN111287318A (en) * 2020-03-27 2020-06-16 山东建筑大学 Spatial grid structure stud bolt connection node and construction method thereof
CN211924687U (en) * 2020-04-05 2020-11-13 江苏华杰不锈钢制品有限公司 Adjustable bolt structure of double-end
CN214274189U (en) * 2020-12-28 2021-09-24 常州晨虹不锈钢制品有限公司 Stainless steel wire stud
CN113586577A (en) * 2021-07-01 2021-11-02 浙江意动科技股份有限公司 Double-bolt head bolt of anti-skid thread

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212079903U (en) * 2020-04-27 2020-12-04 杭州嘉翔高强螺栓股份有限公司 High-strength anti-skid bolt
CN113915220A (en) * 2021-10-08 2022-01-11 张东 High-strength bolt for steel net frame bolt ball joint

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