Bolt-sphere joint connecting structure of steel net rack

Abstract

The utility model discloses a steel net rack bolt-sphere joint connecting structure, which relates to the technical field of steel net rack structures, and comprises a sphere provided with a plurality of connecting screw holes and connecting bolts assembled on the connecting screw holes, and further comprises a limiting unit and a clamping unit which are arranged between the sphere and the connecting bolts, the limiting unit comprises a rectangular frame plate, a supporting circular ring and an inserting screw rod, and the rectangular frame plate is fixedly arranged on the ball body and located on the outer side of the connecting screw hole; each clamping unit comprises a bidirectional lead screw, a supporting block and a clamping arc block, and the concave faces of the two opposite sides of the rectangular frame plate are each provided with a strip-shaped mounting groove. The two clamping arc blocks draw close to each other to clamp the connecting bolt to limit rotation of the connecting bolt, the supporting circular ring is limited by the clamping arc blocks to prevent the connecting bolt from being separated from the rectangular frame plate, and after the two clamping arc blocks are spaced, the connecting bolt can rotate to be pulled away from the ball body. And the equipment further reinforces and limits the connecting bolts, so that the connection reliability is higher.

Description

Technical Field

[0001] This utility model relates to the field of steel space frame structure technology, and in particular to a bolt ball joint connection structure for steel space frames. Background Technology

[0002] Steel space frame structures are mainly divided into two types: welded ball joint space frames and bolted ball joint space frames. Bolted ball joint space frames have a larger amount of components fabricated in the factory, making on-site installation convenient. They are suitable for irregular structures with tight schedules, limited construction conditions and power consumption, complex shapes, and difficult member positioning. Welded ball joint space frames have the disadvantage of being less convenient to install and dismantle than bolted ball joint space frames. Therefore, bolted ball joint space frames are more commonly used in practical applications.

[0003] Publication (Announcement) No. CN210032085U discloses a bolted ball joint connection structure for a steel space frame, including a ball, a connecting bolt, a retaining shaft, and a positioning component. The connecting bolt has an annular groove on its threaded portion. The ball has a first threaded hole through which the connecting bolt is threadedly connected to the ball, with the retaining groove located within the first threaded hole. A sliding hole is formed in the ball, communicating with the first threaded hole. The retaining shaft is slidably installed in the sliding hole. The retaining shaft is connected to the positioning component and is driven by the positioning component to slide along the sliding hole, thereby engaging with or moving away from the retaining groove. In use, the connecting bolt is first used to fix the steel pipe to be connected to the ball. Then, the connecting bolt is tightened so that the retaining groove on the connecting bolt is aligned with the sliding hole. The positioning component then drives the retaining shaft to slide and engage with the retaining groove, thereby increasing the connection strength between the connecting bolt and the ball, while also preventing the connecting bolt from loosening, thus improving reliability and safety.

[0004] Although the above solution can prevent the connecting bolts from loosening, the connecting bolts are only reinforced by single-weight limiting, and the reliability of the equipment connection is still generally average. Therefore, we propose a steel space frame bolt ball joint connection structure. Utility Model Content

[0005] The main purpose of this utility model is to provide a steel grid bolt ball joint connection structure, which solves the problem of difficult maintenance and cleaning of ink raw material solid particles on the filter plate by setting a limiting unit and a clamping unit.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a steel space frame bolt ball node connection structure, including a ball with a plurality of connecting screw holes and connecting bolts assembled on the connecting screw holes, and further including: a limiting unit and a clamping unit disposed between the ball and the connecting bolts;

[0007] The limiting unit includes a rectangular frame plate, a supporting ring, and a plug-in screw. The rectangular frame plate is fixedly mounted on the sphere and located outside the connecting screw hole. The supporting ring is fixedly mounted on the outer circumferential surface of the middle end of the connecting bolt. A number of positioning holes are provided and are distributed in an equidistant circular array on the outer circumferential surface of the supporting ring. The plug-in screw is threaded to one side surface of the rectangular frame plate and extends movably into the positioning hole.

[0008] The clamping unit includes a bidirectional lead screw, a support block, and a clamping arc block. A strip-shaped mounting groove is opened on the concave surfaces of opposite sides of the rectangular frame plate. The bidirectional lead screw is embedded in one of the strip-shaped mounting grooves through a bearing. There are four support blocks in total, which are divided into two groups. One group of support blocks is respectively matched with the two symmetrically arranged positive and negative threads on the bidirectional lead screw. A clamping arc block is fixedly arranged between every two support blocks, and the concave surface of the clamping arc block faces the outer peripheral surface of the connecting bolt.

[0009] Preferably, the plug-in screw and the connecting bolt are arranged perpendicular to each other.

[0010] Preferably, the clamping unit further includes a guide rod, which is fixedly mounted on another strip-shaped mounting groove and movably passes through another set of support blocks.

[0011] Preferably, the bidirectional lead screw and the connecting bolt are arranged perpendicular to each other.

[0012] Preferably, a turntable is fixedly installed at one end of the bidirectional lead screw located outside the rectangular frame plate.

[0013] Preferably, the connecting bolts, the rectangular frame plate, and the supporting ring are located on the same vertical central axis.

[0014] Preferably, the limiting unit and the clamping unit are arranged in a one-to-one correspondence with the connecting screw hole.

[0015] Compared with the prior art, the bolted ball joint connection structure for steel space frame of this utility model has the following advantages:

[0016] 1. In this utility model, by setting a limiting unit, after the connecting bolt is assembled onto the sphere through the connecting screw hole and the steel pipe is assembled, the supporting ring on the connecting bolt can enter the inner side of the rectangular frame plate. After rotating the connecting bolt so that one of the positioning holes on the outer circumference of the supporting ring is aligned with the threaded hole on one side surface of the rectangular frame plate, the insertion screw is rotated onto the threaded hole. The insertion screw perpendicular to the connecting bolt can be rotated and inserted into the positioning hole. The connecting bolt is initially reinforced and limited by the insertion screw and the supporting ring.

[0017] 2. In this utility model, by setting up a clamping unit, a bidirectional lead screw is held and rotated in both directions outside the rectangular frame plate. Two of the support blocks, which are threaded to the bidirectional lead screw, move relative to each other under the force, which helps to adjust the distance between the two clamping arc blocks outside the connecting bolt. The other two support blocks can slide and translate on the guide rod to cooperate with the adjustment of the clamping arc blocks and provide auxiliary support. When the two clamping arc blocks come together, they can clamp the connecting bolt and restrict its rotation. The support ring is also restricted by the clamping arc blocks, which also prevents the connecting bolt from detaching from the rectangular frame plate. After the distance between the two clamping arc blocks is increased, the connecting bolt can rotate and be pulled away from the ball. The equipment further strengthens and limits the connection of the connecting bolt, making the connection more reliable. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of a steel space frame bolt ball node connection structure according to the present invention;

[0020] Figure 2 This is a top view schematic diagram of a bolted ball joint connection structure for a steel space frame according to this utility model;

[0021] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0022] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0023] Figure 5 This is a side view of a bolted ball joint connection structure for a steel space frame according to the present invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Sphere;

[0026] 2. Connecting bolts;

[0027] 3. Limiting unit; 301. Rectangular frame plate; 302. Support ring; 303. Positioning hole; 304. Insertion screw;

[0028] 4. Clamping unit; 401. Two-way lead screw; 402. Support block; 403. Clamping arc block; 404. Guide rod;

[0029] 5. Turntable. 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 4 as well as Figure 5 As shown, a steel space frame bolt ball node connection structure includes a ball 1 with a plurality of connecting screw holes and connecting bolts 2 assembled on the connecting screw holes, and further includes a limiting unit 3 and a clamping unit 4 disposed between the ball 1 and the connecting bolts 2.

[0035] The limiting unit 3 includes a rectangular frame plate 301, a supporting ring 302, and a plug-in screw 304. The rectangular frame plate 301 is fixedly mounted on the sphere 1 and located outside the connecting screw hole. The supporting ring 302 is fixedly mounted on the outer circumferential surface of the middle end of the connecting bolt 2. A number of positioning holes 303 are provided and are distributed in an equidistant circular array on the outer circumferential surface of the supporting ring 302. The plug-in screw 304 is threadedly connected to one side surface of the rectangular frame plate 301 and extends movably into the positioning hole 303.

[0036] The clamping unit 4 includes a bidirectional lead screw 401, a support block 402, and a clamping arc block 403. A strip-shaped mounting groove is opened on the concave surface of opposite sides of the rectangular frame plate 301. The bidirectional lead screw 401 is installed on one of the strip-shaped mounting grooves by means of a bearing. There are four support blocks 402 in total, which are divided into two groups. One group of support blocks 402 is respectively matched with the two symmetrically arranged positive and negative threads on the bidirectional lead screw 401. A clamping arc block 403 is fixedly arranged between every two support blocks 402, and the concave surface of the clamping arc block 403 faces the outer peripheral surface of the connecting bolt 2.

[0037] Furthermore, the insertion screw 304 and the connecting bolt 2 are set perpendicular to each other.

[0038] Furthermore, the connecting bolt 2, the rectangular frame plate 301, and the supporting ring 302 are located on the same vertical central axis.

[0039] Furthermore, both the limiting unit 3 and the clamping unit 4 are configured in a one-to-one correspondence with the connecting screw holes.

[0040] The limiting unit 3 provides initial reinforcement and limitation by restricting the connecting bolt 2 with the insertion screw 304 and the supporting ring 302.

[0041] Example 2

[0042] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a steel space frame bolt ball node connection structure includes a ball 1 with a plurality of connecting screw holes and connecting bolts 2 assembled on the connecting screw holes, and further includes a limiting unit 3 and a clamping unit 4 disposed between the ball 1 and the connecting bolts 2.

[0043] The limiting unit 3 includes a rectangular frame plate 301, a supporting ring 302, and a plug-in screw 304. The rectangular frame plate 301 is fixedly mounted on the sphere 1 and located outside the connecting screw hole. The supporting ring 302 is fixedly mounted on the outer circumferential surface of the middle end of the connecting bolt 2. A number of positioning holes 303 are provided and are distributed in an equidistant circular array on the outer circumferential surface of the supporting ring 302. The plug-in screw 304 is threadedly connected to one side surface of the rectangular frame plate 301 and extends movably into the positioning hole 303.

[0044] The clamping unit 4 includes a bidirectional lead screw 401, a support block 402, and a clamping arc block 403. A strip-shaped mounting groove is opened on the concave surface of opposite sides of the rectangular frame plate 301. The bidirectional lead screw 401 is installed on one of the strip-shaped mounting grooves by means of a bearing. There are four support blocks 402 in total, which are divided into two groups. One group of support blocks 402 is respectively matched with the two symmetrically arranged positive and negative threads on the bidirectional lead screw 401. A clamping arc block 403 is fixedly arranged between every two support blocks 402, and the concave surface of the clamping arc block 403 faces the outer peripheral surface of the connecting bolt 2.

[0045] Furthermore, the clamping unit 4 also includes a guide rod 404, which is fixedly mounted on another strip-shaped mounting groove and movably passes through another set of support blocks 402.

[0046] Furthermore, the bidirectional lead screw 401 and the connecting bolt 2 are arranged perpendicular to each other.

[0047] Furthermore, a turntable 5 is fixedly installed at one end of the bidirectional lead screw 401 located outside the rectangular frame plate 301.

[0048] Furthermore, both the limiting unit 3 and the clamping unit 4 are configured in a one-to-one correspondence with the connecting screw holes.

[0049] The clamping unit 4 further reinforces and limits the connection bolt 2, making the connection more reliable.

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

[0051] After the connecting bolt 2 is assembled onto the sphere 1 through the connecting screw hole and the steel pipe is installed, the support ring 302 on the connecting bolt 2 enters the inner side of the rectangular frame plate 301. Rotating the connecting bolt 2 aligns one of the positioning holes 303 on the outer circumference of the support ring 302 with the threaded hole on one side surface of the rectangular frame plate 301. Then, the insertion screw 304 is rotated onto the threaded hole. The insertion screw 304, perpendicular to the connecting bolt 2, is inserted into the positioning hole 303. The connecting bolt 2 is initially constrained by the insertion screw 304 and the support ring 302. The fixed limit is held outside the rectangular frame plate 301 and rotates the bidirectional lead screw 401 in both directions. Two of the support blocks 402, which are threaded to the bidirectional lead screw 401, move relative to each other under the force to help the two clamping arc blocks 403 adjust the distance outside the connecting bolt 2. The other two support blocks 402 slide and translate on the guide rod 404 to cooperate with the adjustment of the clamping arc blocks 403. The two clamping arc blocks 403 move closer to each other to clamp the connecting bolt 2 and restrict its rotation. The support ring 302 is restricted by the clamping arc blocks 403 and also prevents the connecting bolt 2 from detaching from the rectangular frame plate 301.

[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 steel truss bolted spherical joint connecting structure, comprising a spherical body (1) provided with a plurality of connecting screw holes and connecting bolts (2) assembled on the connecting screw holes, characterized in that, Also include: The limiting unit (3) and the clamping unit (4) arranged between the sphere (1) and the connecting bolt (2); The limiting unit (3) includes a rectangular frame plate (301), a supporting circular ring (302), and a plug-in screw rod (304), the rectangular frame plate (301) is fixedly arranged on the sphere (1) and located outside the connecting screw hole, the supporting circular ring (302) is fixedly arranged on the outer circumferential surface of the middle end of the connecting bolt (2), a plurality of positioning holes (303) are arranged on the outer circumferential surface of the supporting circular ring (302) and are arranged in equidistant circumferential array, and the plug-in screw rod (304) is threadedly connected to one side surface of the rectangular frame plate (301) and movably extends into the positioning hole (303); The clamping unit (4) includes a bidirectional screw rod (401), a block (402), and a clamping arc block (403), the rectangular frame plate (301) is provided with a strip-shaped mounting groove on the concave surface of each of the opposite sides, the bidirectional screw rod (401) is embedded and mounted on one of the strip-shaped mounting grooves through a bearing, the block (402) is provided with four blocks and is divided into two groups, one of the blocks (402) is correspondingly matched with the forward and reverse threads symmetrically arranged on the bidirectional screw rod (401), and one clamping arc block (403) is fixedly arranged between every two blocks (402), and the concave surface of the clamping arc block (403) faces the outer circumferential surface of the connecting bolt (2).

2. The steel space truss bolted spherical joint connecting structure according to claim 1, characterized in that: The plug-in screw rod (304) and the connecting bolt (2) are arranged perpendicular to each other.

3. The steel space truss bolted spherical joint connecting structure according to claim 2, characterized in that: The clamping unit (4) further includes a guide rod (404), and the guide rod (404) is fixedly arranged on the other strip-shaped mounting groove and movably penetrates the other group of blocks (402).

4. The steel space truss bolted spherical joint connecting structure according to claim 1, characterized in that: The bidirectional screw rod (401) and the connecting bolt (2) are arranged perpendicular to each other.

5. The steel space truss bolted spherical joint connecting structure according to claim 1, characterized in that: One end of the bidirectional screw rod (401) located outside the rectangular frame plate (301) is fixedly provided with a turntable (5).

6. The steel space truss bolted spherical joint connecting structure according to claim 3, characterized in that: The connecting bolt (2), the rectangular frame plate (301), and the supporting circular ring (302) are located on the same vertical central axis.

7. The steel space truss bolted spherical joint connecting structure according to claim 1, characterized in that: The limiting unit (3) and the clamping unit (4) are arranged in one-to-one correspondence with the connecting screw hole.

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