High-strength bolt for steel truss bolt-sphere joint

Abstract

The utility model discloses a high-strength bolt for a steel net rack bolt-sphere joint, which relates to the technical field of steel net rack bolts, and comprises a bolt head, a cylinder part and a screw rod part which are connected in sequence, and further comprises a protective structure and a reinforcing structure which are arranged on the cylinder part, the protection structure comprises a supporting circular ring, a supporting spring, a protection sleeve, a sealing rubber ring and a covering rubber sleeve, and the supporting circular ring fixedly sleeves the peripheral surface of the cylindrical part; the reinforcing structure comprises a reinforcing strip, a rectangular groove is formed in the edge of the end, close to the cylindrical portion, of the bolt head, the supporting spring is pushed and compressed by the covering rubber sleeve to help the covering rubber sleeve to abut against the bolt ball, and the connecting position of the screw portion and the bolt ball is sealed and covered to prevent external rainwater from entering the bolt ball. The sealing rubber ring fixedly arranged on the inner wall of the protective sleeve is tightly attached to the peripheral face of the cylindrical part to prevent air and rainwater from entering the covering rubber sleeve. According to the scheme, the protective component blocks rainwater, and the bolt is prevented from loosening due to corrosion.

Description

Technical Field

[0001] This utility model relates to the field of steel space frame bolt technology, and in particular to a high-strength bolt for ball joints of steel space frames. Background Technology

[0002] Currently, in bolted ball joint space frames, each member is connected to the bolted ball joint by only one high-strength bolt at one end. Bolted balls are mostly used in space frame structures. However, the high-strength bolts used in some existing steel space frame bolted ball joints are not strong enough. During installation, the threaded column is prone to twisting and breaking, which affects the use of the device. In addition, the existing high-strength bolts used in steel space frame bolted ball joints are inconvenient to install. To solve these problems, we propose a high-strength bolt for steel space frame bolted ball joints.

[0003] Publication number CN217734370U discloses a high-strength bolt for ball joints in steel space frames, relating to the field of steel space frames. Addressing the issue that some existing high-strength bolts for ball joints in steel space frames lack sufficient strength, leading to the threaded post easily twisting and breaking during installation, thus affecting the device's usability, and that existing high-strength bolts for ball joints in steel space frames are inconvenient to install, the following solution is proposed: It includes a mounting base, with a threaded post positioned on top of the mounting base. The surface of the threaded post is covered with a protective sleeve, and the lower surface of the mounting base has an installation groove, with a positioning hole at the bottom of the installation groove. This device can avoid the risk of threaded post breakage due to excessive torque during installation. Simultaneously, the multiple fixing rods and reinforcing rods enhance the strength of the device itself, provide protection for the threaded post, increase its strength, and make installation more convenient.

[0004] While the above solutions can provide protection for threaded columns and increase their strength, the limited contact area of ​​the reinforcing components results in only moderate reinforcement. Furthermore, the protective components are not effective at blocking rainwater, making the bolts prone to loosening due to corrosion. Therefore, we propose a high-strength bolt for steel space frame bolt ball joints. Utility Model Content

[0005] The main purpose of this utility model is to provide a high-strength bolt for ball joints of steel space frames. By setting up a protective structure and a reinforcing structure, it solves the problems that the reinforcing effect is generally poor due to the small contact surface of the reinforcing component, and that the protective component is difficult to block rainwater, which makes the bolt easy to loosen due to corrosion.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a high-strength bolt for a steel space frame bolt ball node, comprising a bolt head, a cylindrical part and a threaded part connected in sequence, and further comprising: a protective structure and a reinforcing structure disposed on the cylindrical part;

[0007] The protective structure includes a supporting ring, a supporting spring, a protective sleeve, a sealing rubber ring, and a covering rubber sleeve. The supporting ring is fixedly sleeved on the outer circumferential surface of the cylindrical part. The supporting spring is fixedly disposed on the side of the supporting ring. The protective sleeve is fixedly disposed on the end face of the supporting spring and surrounds the outer circumferential surface of the cylindrical part. The sealing rubber ring is fixedly disposed on the inner wall of the protective sleeve near the supporting ring. The covering rubber sleeve is in the shape of a hollow frustum and is fixedly disposed on the other end of the protective sleeve.

[0008] The reinforcing structure includes a reinforcing strip. A rectangular groove is provided at one end edge of the bolt head near the cylindrical part. A rectangular insertion groove parallel to the rectangular groove is provided on the outer circumferential surface of the cylindrical part end. One end of the reinforcing strip is inserted into and welded into the rectangular groove, and the other end of the reinforcing strip is inserted into and welded into the rectangular insertion groove. The reinforcing strip is L-shaped.

[0009] Preferably, there are four support springs, which are distributed in an equidistant circular array on the side of the support ring.

[0010] Preferably, the bolt head, cylindrical part, screw part, supporting ring, protective sleeve, sealing rubber ring, and covering rubber sleeve are all located on the same transverse central axis.

[0011] Preferably, a plurality of rectangular grooves are provided and are distributed in an equidistant circular array at the end of the bolt head, and the reinforcing strip and the rectangular insertion groove are provided in a one-to-one correspondence with the rectangular grooves.

[0012] Preferably, the support spring is arranged parallel to the cylindrical portion.

[0013] Preferably, a hexagonal groove is provided at the center of the end face of the bolt head away from the cylindrical part.

[0014] Compared with the prior art, the high-strength bolt for ball joints of steel space frames of this utility model has the following beneficial effects:

[0015] 1. In this utility model, by setting a protective structure, the supporting ring fixedly sleeved on the outer circumference of the cylindrical part can fix one end of the supporting spring, the protective sleeve fixedly set on the end face of the supporting spring and surrounding the outer circumference of the cylindrical part can protect the cylindrical part located outside the bolt ball, the cover rubber sleeve in the shape of a hollow frustum and fixedly set on the end face of the protective sleeve can deform and adhere to the surface of the bolt ball, the supporting spring is pushed and compressed by the cover rubber sleeve to help the cover rubber sleeve press against the bolt ball, the connection between the screw part and the bolt ball is sealed and covered to prevent external rainwater from entering, the sealing rubber ring fixedly set on the inner wall of the protective sleeve can adhere tightly to the outer circumference of the cylindrical part to prevent air and rainwater from entering the cover rubber sleeve. The protective components of this solution can block rainwater and prevent the bolt from loosening due to corrosion.

[0016] 2. In this utility model, by setting a reinforcing structure, and by opening mutually parallel rectangular grooves and rectangular insertion slots on the bolt head and cylindrical part, an "L"-shaped reinforcing strip can be inserted and welded at one end into the rectangular groove, and the other end of the reinforcing strip can be inserted and welded into the rectangular insertion slot. The bolt head and cylindrical part are further reinforced, and the reinforcing strip can be welded to the bolt head and cylindrical part on multiple surfaces. The increased contact surface of the reinforcing component in this solution improves the reinforcing effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-strength bolt for a steel space frame bolt ball joint according to the present invention;

[0019] Figure 2 This is a top view schematic diagram of a high-strength bolt for a steel space frame bolt ball joint according to the present invention;

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0022] Figure 5 This is a side view of a high-strength bolt for a steel space frame bolt ball joint according to the present invention.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Bolt head;

[0025] 2. Cylindrical part;

[0026] 3. Screw section;

[0027] 4. Protective structure; 401. Supporting ring; 402. Supporting spring; 403. Protective sleeve; 404. Sealing rubber ring; 405. Covering rubber sleeve;

[0028] 5. Reinforced structure; 501. Rectangular groove; 502. Rectangular insertion slot; 503. Reinforcing strip;

[0029] 6. Move the groove. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example 1

[0034] like Figure 1 , Figure 2 , Figure 3 as well as Figure 5 As shown, a high-strength bolt for a steel space frame bolt ball node includes a bolt head 1, a cylindrical part 2 and a threaded part 3 connected in sequence, and further includes a protective structure 4 and a reinforcing structure 5 disposed on the cylindrical part 2;

[0035] The protective structure 4 includes a supporting ring 401, a supporting spring 402, a protective sleeve 403, a sealing rubber ring 404, and a covering rubber sleeve 405. The supporting ring 401 is fixedly sleeved on the outer circumferential surface of the cylindrical part 2. The supporting spring 402 is fixedly disposed on the side of the supporting ring 401. The protective sleeve 403 is fixedly disposed on the end face of the supporting spring 402 and surrounds the outer circumferential surface of the cylindrical part 2. The sealing rubber ring 404 is fixedly disposed on the inner wall of the protective sleeve 403 near the supporting ring 401. The covering rubber sleeve 405 is in the shape of a hollow frustum and is fixedly disposed on the other end of the protective sleeve 403.

[0036] The reinforcing structure 5 includes a reinforcing strip 503. A rectangular groove 501 is provided at one end edge of the bolt head 1 near the cylindrical part 2. A rectangular insertion groove 502 parallel to the rectangular groove 501 is provided on the outer circumferential surface of the end of the cylindrical part 2. One end of the reinforcing strip 503 is inserted into and welded into the rectangular groove 501, and the other end of the reinforcing strip 503 is inserted into and welded into the rectangular insertion groove 502. The reinforcing strip 503 is in the shape of an "L".

[0037] Furthermore, there are four support springs 402, which are distributed in an equidistant circular array on the side of the support ring 401.

[0038] Furthermore, the bolt head 1, cylindrical part 2, screw part 3, support ring 401, protective sleeve 403, sealing rubber ring 404, and covering rubber sleeve 405 are all located on the same transverse central axis.

[0039] Furthermore, the support spring 402 is arranged parallel to the cylindrical part 2.

[0040] Furthermore, a hexagonal groove 6 is provided at the center of the end face of the bolt head 1 away from the cylindrical part 2.

[0041] The protective structure 4 protects the components from rainwater, preventing the bolts from loosening due to corrosion.

[0042] Example 2

[0043] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, a high-strength bolt for a steel space frame bolt ball node includes a bolt head 1, a cylindrical part 2 and a threaded part 3 connected in sequence, and further includes a protective structure 4 and a reinforcing structure 5 disposed on the cylindrical part 2;

[0044] The protective structure 4 includes a supporting ring 401, a supporting spring 402, a protective sleeve 403, a sealing rubber ring 404, and a covering rubber sleeve 405. The supporting ring 401 is fixedly sleeved on the outer circumferential surface of the cylindrical part 2. The supporting spring 402 is fixedly disposed on the side of the supporting ring 401. The protective sleeve 403 is fixedly disposed on the end face of the supporting spring 402 and surrounds the outer circumferential surface of the cylindrical part 2. The sealing rubber ring 404 is fixedly disposed on the inner wall of the protective sleeve 403 near the supporting ring 401. The covering rubber sleeve 405 is in the shape of a hollow frustum and is fixedly disposed on the other end of the protective sleeve 403.

[0045] The reinforcing structure 5 includes a reinforcing strip 503. A rectangular groove 501 is provided at one end edge of the bolt head 1 near the cylindrical part 2. A rectangular insertion groove 502 parallel to the rectangular groove 501 is provided on the outer circumferential surface of the end of the cylindrical part 2. One end of the reinforcing strip 503 is inserted into and welded into the rectangular groove 501, and the other end of the reinforcing strip 503 is inserted into and welded into the rectangular insertion groove 502. The reinforcing strip 503 is in the shape of an "L".

[0046] Furthermore, the bolt head 1, cylindrical part 2, screw part 3, support ring 401, protective sleeve 403, sealing rubber ring 404, and covering rubber sleeve 405 are all located on the same transverse central axis.

[0047] Furthermore, there are several rectangular grooves 501, which are distributed in an equidistant circular array at the end of the bolt head 1. The reinforcing strip 503 and the rectangular insertion groove 502 are respectively set in a one-to-one correspondence with the rectangular grooves 501.

[0048] Furthermore, a hexagonal groove 6 is provided at the center of the end face of the bolt head 1 away from the cylindrical part 2.

[0049] By strengthening structure 5, the contact surface of the reinforced component in this solution is increased, thereby improving the reinforcement effect.

[0050] The working principle of this utility model is as follows:

[0051] One end of an "L"-shaped reinforcing strip 503 is inserted into and welded into a rectangular groove 501, and the other end is inserted into and welded into a rectangular insertion slot 502. This further reinforces the connection between the bolt head 1 and the cylindrical part 2. Furthermore, the reinforcing strip 503 is welded to both the bolt head 1 and the cylindrical part 2 on multiple surfaces. A support ring 401, fixedly fitted onto the outer circumference of the cylindrical part 2, secures one end of a support spring 402. A protective sleeve, fixedly mounted on the end face of the support spring 402 and surrounding the outer circumference of the cylindrical part 2, is also included. The sleeve 403 protects the cylindrical part 2 located outside the bolt ball. The cover sleeve 405, which is hollow frustum-shaped and fixedly installed on the end face of the protective sleeve 403, deforms and adheres to the surface of the bolt ball. The support spring 402 is pushed and compressed by the cover sleeve 405 to help the cover sleeve 405 press against the bolt ball. The connection between the screw part 3 and the bolt ball is sealed and covered to prevent external rainwater from entering. The sealing ring 404, which is fixedly installed on the inner wall of the protective sleeve 403, is close to the outer circumference of the cylindrical part 2 to prevent air and rainwater from entering the cover sleeve 405.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength bolt for a ball joint of a steel space frame, comprising a bolt head (1), a cylindrical portion (2), and a threaded portion (3) connected in sequence, characterized in that, Also includes: A protective structure (4) and a reinforcing structure (5) are provided on the cylindrical part (2); The protective structure (4) includes a supporting ring (401), a supporting spring (402), a protective sleeve (403), a sealing rubber ring (404), and a covering rubber sleeve (405). The supporting ring (401) is fixedly sleeved on the outer circumferential surface of the cylindrical part (2). The supporting spring (402) is fixedly disposed on the side of the supporting ring (401). The protective sleeve (403) is fixedly disposed on the end face of the supporting spring (402) and surrounds the outer circumferential surface of the cylindrical part (2). The sealing rubber ring (404) is fixedly disposed on the inner wall of the protective sleeve (403) near the supporting ring (401). The covering rubber sleeve (405) is in the shape of a hollow frustum and is fixedly disposed on the other end of the protective sleeve (403). The reinforcing structure (5) includes a reinforcing strip (503). A rectangular groove (501) is provided at one end edge of the bolt head (1) near the cylindrical part (2). A rectangular insertion groove (502) parallel to the rectangular groove (501) is provided on the outer circumferential surface of the end of the cylindrical part (2). One end of the reinforcing strip (503) is inserted into and welded into the rectangular groove (501), and the other end of the reinforcing strip (503) is inserted into and welded into the rectangular insertion groove (502). The reinforcing strip (503) is L-shaped.

2. The high-strength bolt for a steel space frame bolt ball joint according to claim 1, characterized in that: The support springs (402) are provided in a total of four and are distributed in an equidistant circular array on the side of the support ring (401).

3. The high-strength bolt for a steel space frame bolt ball joint according to claim 1, characterized in that: The bolt head (1), cylindrical part (2), screw part (3), support ring (401), protective sleeve (403), sealing rubber ring (404) and covering rubber sleeve (405) are all located on the same transverse central axis.

4. The high-strength bolt for a steel space frame bolt ball joint according to claim 1, characterized in that: There are several rectangular grooves (501) and they are distributed in an equidistant circular array at the end of the bolt head (1). The reinforcing strip (503) and the rectangular insertion groove (502) are respectively set in a one-to-one correspondence with the rectangular grooves (501).

5. A high-strength bolt for a ball joint of a steel space frame according to claim 1, characterized in that: The support spring (402) is arranged parallel to the cylindrical part (2).

6. The high-strength bolt for a ball joint of a steel space frame according to claim 1, characterized in that: The bolt head (1) has a hexagonal groove (6) at the center of the end face away from the cylindrical part (2).

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