An adjustable jackscrew sleeve structure

Abstract

The utility model discloses an adjustable top screw sleeve structure relates to building engineering technical field, include: sleeve, for providing support base, adjusting screw rod, the inside top of sleeve is set through, for realizing the height adjustment of top screw sleeve structure, the top support is set in the top of adjusting screw rod, for supporting external scaffold, first half cylindrical casing is set in one side of sleeve top, for cooperating second half cylindrical casing and restricts the rotation of adjusting screw rod, second half cylindrical casing is set in the other side of sleeve top, for forming complete protection structure with first half cylindrical casing, base connecting piece is set in the bottom of sleeve, for with external scaffold or ground connection fixed. The utility model can cooperate through the cooperation of strip positioning key and strip limiting groove, effectively prevent the autorotation of adjusting screw rod under the bearing state, solved the problem that the height accidental change of traditional top screw support structure because of vibration or long -term stress.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and more specifically, to an adjustable top screw sleeve structure. Background Technology

[0002] In construction engineering, scaffolding support is a core piece of equipment to ensure construction safety and formwork stability. Among them, the jacking sleeve structure, as a key height-adjustable support component, is widely used in various construction engineering scenarios such as beam and slab formwork support, floor construction, and temporary support. As construction engineering develops towards higher heights and larger spans, higher standards are being placed on the precision and structural stability of support components. This requires the jacking sleeve structure not only to have reliable load-bearing capacity but also to effectively prevent accidental loosening and displacement deviations during the adjustment process.

[0003] Currently, the top screw support components used in building construction mainly adopt a traditional structure with a separate threaded rod and adjusting nut. The height is adjusted by manually rotating the nut on the threaded rod. In beam and slab formwork support applications, common technical solutions include an arc-shaped connection method where the adjustable screw directly contacts the steel pipe, and a threaded adjustment mechanism where the support height is changed by moving the adjusting nut up and down.

[0004] However, existing top screw support structures suffer from critical problems such as poor adjustment stability and insufficient anti-loosening performance. Because traditional structures lack effective anti-rotation mechanisms, the adjusting screw is prone to self-rotation under load due to vibration, impact, or long-term stress, leading to unexpected changes in the adjustment height and affecting support stability and construction safety. Furthermore, existing structures often employ a split design for the adjustment components, lacking reliable fixing and locking mechanisms between parts. Moreover, after adjustment, there are no effective locking protection measures, failing to prevent unexpected displacement under external forces. These problems directly impact the reliability of the support components and the stability of construction quality.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes an adjustable set screw sleeve structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] An adjustable top screw sleeve structure includes: a sleeve for providing a supporting foundation; an adjusting screw rod that passes through the inner top of the sleeve for height adjustment of the top screw sleeve structure; a top support that is located at the top of the adjusting screw rod for supporting external scaffolding; a first semi-cylindrical sleeve located on one side of the top of the sleeve for cooperating with a second semi-cylindrical sleeve to restrict the rotation of the adjusting screw rod; a second semi-cylindrical sleeve located on the other side of the top of the sleeve for forming a complete protective structure with the first semi-cylindrical sleeve; and a base connector located at the bottom of the sleeve for connection and fixation to the external scaffolding or the ground.

[0009] Furthermore, in order to improve the load-bearing capacity of the entire top screw sleeve structure, the sleeve is designed as a hollow cylindrical structure. The inner side of the hollow cylindrical structure is provided with a threaded groove that mates with the outer side of the adjusting screw. The top outer side of the hollow cylindrical structure is provided with an annular groove, and the top of the annular groove is provided with an annular step that mates with the first semi-cylindrical protective sleeve and the second semi-cylindrical protective sleeve.

[0010] Furthermore, in order to achieve positioning between the adjusting screw and the two side sleeves, the first semi-cylindrical sleeve includes a first semi-cylindrical ring disposed on one side of the top of the sleeve. A first engaging groove is provided on the inner side of the first semi-cylindrical ring near the sleeve, and a first annular protrusion is provided at one end of the first engaging groove. A strip-shaped limiting groove that mates with the end of the adjusting screw is provided on one side of the middle of the first semi-cylindrical ring. Two sets of first connecting holes are symmetrically provided on both sides of the first semi-cylindrical ring. A first bolt group that mates with the second semi-cylindrical sleeve is provided in the first connecting hole away from the adjusting screw, and a second bolt group that mates with the second semi-cylindrical sleeve is provided in the first connecting hole near the adjusting screw. The bolt heads of the first bolt group and the second bolt group are in opposite directions to provide omnidirectional fixing force.

[0011] Furthermore, to ensure that the adjusting screw maintains a stable height after height adjustment, the second semi-cylindrical sleeve includes a second semi-cylindrical ring disposed on one side of the top of the sleeve. A second engaging groove is provided on the inner side of the second semi-cylindrical ring near the sleeve, and a second annular protrusion is provided at one end of the second engaging groove. Two sets of second connecting holes are symmetrically provided on both sides of the second semi-cylindrical ring. A third bolt group that mates with the first semi-cylindrical sleeve is provided in the set of second connecting holes away from the adjusting screw, and a fourth bolt group that mates with the first semi-cylindrical sleeve is provided in the set of second connecting holes near the adjusting screw. The bolt heads of the third bolt group and the fourth bolt group are in opposite directions to maintain the stability of the overall structure.

[0012] Furthermore, to form a height-adjustable and stable top screw sleeve structure, the adjusting screw includes a threaded rod section located inside the sleeve, with a smooth rod section at one end; a connecting thread is provided on the outer side of the smooth rod section away from the threaded rod section, and a keyway is provided on one side of the smooth rod section, with a strip-shaped positioning key fixedly installed in the keyway to cooperate with the first semi-cylindrical protective sleeve, used to prevent the screw from rotating to ensure adjustment accuracy; the top support includes a connecting block located at the top of the adjusting screw, with an internal thread groove on the inner side of the connecting block that cooperates with the connecting thread; a U-shaped bracket through which the adjusting screw passes is fixedly installed at one end of the connecting block, and elastic clamps are provided on both sides of the U-shaped bracket to firmly clamp the scaffold steel pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model has a scientific and novel structure. It can effectively prevent the self-rotation of the adjusting screw under load by cooperating with the strip positioning key and the strip limiting groove. It solves the technical problem of unexpected height changes caused by vibration or long-term stress in traditional top screw support structures, and ensures the long-term stability of the support height and the safety of building construction.

[0015] 2. This utility model achieves the protection and locking of the adjusting screw by setting a first semi-cylindrical protective sleeve and a second semi-cylindrical protective sleeve. The two semi-cylindrical protective sleeves are tightly connected by the balanced clamping force of the reverse bolt group to form a complete cylindrical protective structure, which not only provides a stable anti-rotation restriction function, but also effectively prevents the connection from loosening and the parts from falling off under the action of external force, thus improving the reliability of the entire set screw sleeve structure.

[0016] 3. This utility model achieves convenient and accurate height adjustment by setting a threaded engagement structure between the sleeve and the adjusting screw. Compared with the traditional separate nut adjustment method, this utility model can achieve continuous height adjustment by directly rotating the adjusting screw, which not only improves the adjustment efficiency but also ensures the adjustment accuracy. At the same time, combined with the standardized interface design of the base connector, it realizes universal connection with various scaffolding systems and ground fixing components, improving the practicality of the product. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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 an adjustable set screw sleeve structure according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of an adjustable set screw sleeve structure from another angle according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the sleeve structure in an adjustable set screw sleeve structure according to an embodiment of the present utility model;

[0021] Figure 4 This is a partial structural diagram of the first semi-cylindrical sleeve in an adjustable top screw sleeve structure according to an embodiment of the present utility model.

[0022] Figure 5 This is a partial structural diagram of the second semi-cylindrical sleeve in an adjustable top screw sleeve structure according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the adjusting screw in an adjustable top screw sleeve structure according to an embodiment of the present utility model;

[0024] Figure 7 This is a partial structural diagram of the top support in an adjustable top screw sleeve structure according to an embodiment of the present utility model.

[0025] In the picture:

[0026] 1. Sleeve; 101. Hollow cylindrical structure; 102. Annular groove; 103. Annular step; 2. Adjusting screw; 201. Threaded rod segment; 202. Smooth rod segment; 203. Connecting thread; 204. Keyway; 205. Strip-shaped positioning key; 3. Top support; 301. Connecting block; 302. U-shaped bracket; 303. Elastic clamp; 4. First semi-cylindrical sleeve; 401. First semi-cylindrical ring; 402. First engaging groove; 403. First annular protrusion; 404. Strip-shaped limiting groove; 405. First connecting hole; 406. First bolt group; 407. Second bolt group; 5. Second semi-cylindrical sleeve; 501. Second semi-cylindrical ring; 502. Second engaging groove; 503. Second annular protrusion; 504. Second connecting hole; 505. Third bolt group; 506. Fourth bolt group; 6. Base connector. Detailed Implementation

[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] According to an embodiment of the present invention, an adjustable set screw sleeve structure is provided.

[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-7 As shown, the adjustable set screw sleeve structure according to an embodiment of the present invention includes:

[0030] Sleeve 1 is used to provide a supporting foundation;

[0031] Adjusting screw 2 is installed through the inner top of sleeve 1 to adjust the height of the top screw sleeve structure;

[0032] Top support 3, located at the top of adjusting screw 2, is used to support the external scaffolding;

[0033] The first semi-cylindrical sleeve 4 is located on one side of the top of the sleeve 1 and is used to cooperate with the second semi-cylindrical sleeve 5 to limit the rotation of the adjusting screw 2;

[0034] The second semi-cylindrical sleeve 5 is located on the other side of the top of the sleeve 1, and is used to form a complete protective structure with the first semi-cylindrical sleeve 4;

[0035] The base connector 6 is located at the bottom end of the sleeve 1 and is used to connect and fix it to the external scaffolding or the ground.

[0036] It should be noted that the base connector 6 is a disc-shaped support base with a connecting part fixedly installed at the center of the support base, and the connecting part is welded and fixed to the bottom end of the sleeve 1; the bottom of the support base is provided with an external thread structure, which is used to cooperate with the connecting sleeve at the bottom of the scaffold or the connecting screw hole on the ground foundation; several reinforcing ribs are provided on the outer periphery of the support base to enhance the structural strength of the connection between the base connector 6 and the sleeve 1, thereby improving the stability and load-bearing capacity of the entire top screw sleeve structure.

[0037] In one embodiment, the sleeve 1 is configured as a hollow cylindrical structure 101. The inner side of the hollow cylindrical structure 101 is provided with a threaded groove that mates with the outer side of the adjusting screw 2. The top outer side of the hollow cylindrical structure 101 is provided with an annular groove 102. The top of the annular groove 102 is provided with an annular step 103 that mates with the first semi-cylindrical protective sleeve 4 and the second semi-cylindrical protective sleeve 5. This forms a stable connection structure with the adjusting screw 2 and ensures that the first semi-cylindrical protective sleeve 4 and the second semi-cylindrical protective sleeve 5 can be firmly locked onto the sleeve 1.

[0038] The working principle of sleeve 1 is as follows: Sleeve 1, as the main supporting component of the entire set screw sleeve structure, tightly engages with the threaded section 201 of the adjusting screw 2 through its internal threaded groove, thereby realizing the lifting function of the screw. When height adjustment is required, the adjusting screw 2 rotates inside sleeve 1, and the screw moves up and down due to the action of the thread. The annular groove 102 and annular step 103 at the top of sleeve 1 are used to fix the first semi-cylindrical sleeve 4 and the second semi-cylindrical sleeve 5, and to prevent the adjusting screw 2 from tilting or shaking.

[0039] In one embodiment, the first semi-cylindrical sleeve 4 includes a first semi-cylindrical ring 401 disposed on one side of the top of the sleeve 1. A first engaging groove 402 is provided on the inner side of the first semi-cylindrical ring 401 near the end of the sleeve 1, and a first annular protrusion 403 is provided at one end of the first engaging groove 402. A strip-shaped limiting groove 404 is provided on one side of the middle portion of the first semi-cylindrical ring 401 to cooperate with the end of the adjusting screw 2. Two... A first connecting hole 405 is provided in the first connecting hole 405 away from the adjusting screw 2, and a first bolt group 406 is provided in the first connecting hole 405 that cooperates with the second semi-cylindrical protective sleeve 5. A second bolt group 407 is provided in the first connecting hole 405 near the adjusting screw 2 that cooperates with the second semi-cylindrical protective sleeve 5. The bolt heads of the first bolt group 406 and the second bolt group 407 are opposite in direction to provide all-round fixing force, thereby realizing the positioning between the adjusting screw 2 and the protective sleeves on both sides and preventing loosening and displacement during the adjustment process.

[0040] It should also be noted that the first bolt group 406, the second bolt group 407, the third bolt group 505, and the fourth bolt group 506 have the same structure, all including bolt heads, nuts, and washers, used to achieve a reliable connection between the first semi-cylindrical casing 4 and the second semi-cylindrical casing 5. Specifically, the bolt head passes through the first connecting hole 405 and the second connecting hole 504, and the washer is placed at the head of the bolt head and the end of the nut to increase the contact area and prevent loosening. The nut provides clamping force by tightening, so that the two semi-cylindrical casings fit tightly together to form a complete circular casing structure. This is a conventional technology and will not be described in detail here.

[0041] The working principle of the first semi-cylindrical sleeve 4 is as follows: The first semi-cylindrical sleeve 4 is a key anti-rotation component of the entire top screw sleeve structure. Through the tight engagement of the first engaging groove 402 and the first annular protrusion 403 with the annular step 103 and annular groove 102 of the sleeve 1, a stable connection between the two sleeves and the sleeve 1 is ensured. Among these, the strip-shaped limiting groove 404 is the most crucial functional part; it cooperates with the strip-shaped positioning key 205 on the adjusting screw 2 to effectively prevent the adjusting screw from rotating on its own after adjustment. The reverse design of the first bolt group 406 and the second bolt group 407 provides a balanced fixing force, ensuring that the first semi-cylindrical sleeve 4 and the second semi-cylindrical sleeve 5 can be tightly combined to form a whole, maintaining stability under various complex conditions in the construction environment.

[0042] In one embodiment, the second semi-cylindrical sleeve 5 includes a second semi-cylindrical ring 501 disposed on one side of the top of the sleeve 1. A second engaging groove 502 is provided on the inner side of the second semi-cylindrical ring 501 near the end of the sleeve 1, and a second annular protrusion 503 is provided on one end of the second engaging groove 502. Two sets of second connecting holes 504 are symmetrically provided on both sides of the second semi-cylindrical ring 501. A third bolt group 505 that cooperates with the first semi-cylindrical sleeve 4 is provided in the set of second connecting holes 504 away from the adjusting screw 2, and a fourth bolt group 506 that cooperates with the first semi-cylindrical sleeve 4 is provided in the set of second connecting holes 504 near the adjusting screw 2. The bolt heads of the third bolt group 505 and the fourth bolt group 506 are opposite in direction to maintain the stability of the overall structure, thereby ensuring that the adjusting screw 2 can maintain a stable height after the height adjustment is completed, and improving the load-bearing capacity of the top screw sleeve structure.

[0043] The working principle of the second semi-cylindrical sleeve 5 is as follows: The second semi-cylindrical sleeve 5 and the first semi-cylindrical sleeve 4 together form a complete two-sided sleeve structure. Through the engagement of the second locking groove 502 and the second annular protrusion 503 with the annular step 103 and annular groove 102 of the sleeve 1, precise positioning and connection with the sleeve are achieved. Unlike the first semi-cylindrical sleeve 4, the second semi-cylindrical sleeve 5 does not have a strip-shaped limiting groove; its main function is to cooperate with the first semi-cylindrical sleeve 4 to form a comprehensive protective enclosure for the adjusting screw 2. The reverse design of the third bolt group 505 and the fourth bolt group 506 effectively prevents loosening caused by vibration or external force, improving safety.

[0044] In one embodiment, for the aforementioned adjusting screw 2 and top support 3, the adjusting screw 2 includes a threaded rod segment 201 disposed inside the sleeve 1, and a smooth rod segment 202 fixedly disposed at one end of the threaded rod segment 201; a connecting thread 203 is disposed on the outer side of the end of the smooth rod segment 202 away from the threaded rod segment 201, and a keyway 204 is provided on one side of the smooth rod segment 202, and a strip-shaped positioning key 205 that cooperates with the first semi-cylindrical protective sleeve 4 is fixedly disposed in the keyway 204 to prevent the screw from rotating to ensure adjustment accuracy; the top support 3 includes a connecting block 301 disposed at the top of the adjusting screw 2, and an internal thread groove that cooperates with the connecting thread 203 is provided on the inner side of the connecting block 301; a U-shaped bracket 302 that is penetrated by the adjusting screw 2 is fixedly disposed at one end of the connecting block 301, and elastic clamps 303 are provided on both sides of the U-shaped bracket 302 to firmly clamp the scaffold steel pipe, thereby forming a height-adjustable and stable top screw sleeve structure.

[0045] The working principle of the adjusting screw 2 and the top support 3 is as follows: The adjusting screw 2 is the core adjusting component of the entire top screw sleeve structure. It achieves precise height adjustment through the engagement of the threaded rod section 201 with the threaded groove inside the sleeve 1. When height adjustment is required, the operator can rotate the adjusting screw 2 to move it up and down inside the sleeve 1. The smooth rod section 202 protrudes from the outside of the sleeve 1 and engages with the first semi-cylindrical sleeve 4 and the second semi-cylindrical sleeve 5. In particular, the strip positioning key 205 in the keyway 204 is tightly engaged with the strip limiting groove 404 of the first semi-cylindrical sleeve 4. This design effectively prevents the adjusting screw 2 from rotating under load, ensuring the stability of the adjusted height.

[0046] Furthermore, the top support 3 is connected to the adjusting screw 2 via the connecting block 301 and the connecting thread 203, forming a whole. The design of the U-shaped bracket 302 and the elastic clamp 303 allows the top support to adapt to scaffolding steel pipes of different specifications, providing reliable support, while also facilitating installation and disassembly.

[0047] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0048] In practical application, first, fix the base connector 6 to the bottom of the scaffold or the ground foundation. Then, according to the approximate range of the required support height, manually rotate the adjusting screw 2 to extend it out of the sleeve 1 to a position close to the target height. Next, place the first semi-cylindrical sleeve 4 and the second semi-cylindrical sleeve 5 on the top sides of the sleeve 1 respectively, so that the first engaging groove 402 and the second engaging groove 502 engage with the annular groove 102, and the first annular protrusion 403 and the second annular protrusion 503 engage with the annular step 103, ensuring that the strip positioning key 205 is accurately inserted into the strip limiting groove 404. Then, place the scaffold steel pipe into the U-shaped bracket 302 of the top support 3, and clamp the steel pipe with the elastic clamp 303. At this time, if a fine adjustment of the height is required, the adjusting screw 2 can be slightly rotated for precise adjustment. Finally, tighten the first bolt group 406, the second bolt group 407, the third bolt group 505, and the fourth bolt group 506 in sequence. Due to the design of the bolt heads facing opposite directions, a balanced clamping force is formed to firmly connect the two semi-cylindrical sleeves. Due to the limiting effect of the bar positioning key 205 and the bar limiting groove 404, the adjusting screw 2 will not rotate when bearing load, ensuring the stability and safety of the support height.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable set screw sleeve structure, characterized in that, include: Sleeve (1), used to provide a supporting foundation; Adjusting screw (2) is provided through the inner top of the sleeve (1) to realize the height adjustment of the top screw sleeve structure; The top support (3) is located at the top of the adjusting screw (2) and is used to support the external scaffolding; The first semi-cylindrical sleeve (4) is located on one side of the top of the sleeve (1) and is used to cooperate with the second semi-cylindrical sleeve (5) to limit the rotation of the adjusting screw (2); The second semi-cylindrical sleeve (5) is disposed on the other side of the top of the sleeve (1) to form a complete protective structure with the first semi-cylindrical sleeve (4); The base connector (6) is located at the bottom end of the sleeve (1) and is used to connect and fix it to the external scaffolding or the ground.

2. The adjustable set screw sleeve structure according to claim 1, characterized in that, The sleeve (1) is configured as a hollow cylindrical structure (101), and the inner side of the hollow cylindrical structure (101) is provided with a threaded groove that cooperates with the outer side of the adjusting screw (2); The hollow column structure (101) has an annular groove (102) on its top outer side, and the top of the annular groove (102) has an annular step (103) that cooperates with the first semi-cylindrical protective tube (4) and the second semi-cylindrical protective tube (5).

3. The adjustable set screw sleeve structure according to claim 1, characterized in that, The first semi-cylindrical sleeve (4) includes a first semi-cylindrical ring (401) disposed on one side of the top of the sleeve (1). A first engaging groove (402) is provided on the inner side of the first semi-cylindrical ring (401) near the end of the sleeve (1). A first annular protrusion (403) is provided on one end of the first engaging groove (402).

4. The adjustable set screw sleeve structure according to claim 3, characterized in that, The first semi-cylindrical ring (401) has a strip-shaped limiting groove (404) on one side of the middle part that cooperates with the end of the adjusting screw (2), and two sets of first connecting holes (405) are symmetrically opened on both sides of the first semi-cylindrical ring (401). A first bolt group (406) that mates with the second semi-cylindrical sleeve (5) is provided in a set of first connecting holes (405) away from the adjusting screw (2), and a second bolt group (407) that mates with the second semi-cylindrical sleeve (5) is provided in a set of first connecting holes (405) close to the adjusting screw (2). The bolt heads of the first bolt group (406) and the second bolt group (407) are in opposite directions to provide omnidirectional fixing force.

5. The adjustable set screw sleeve structure according to claim 1, characterized in that, The second semi-cylindrical sleeve (5) includes a second semi-cylindrical ring (501) disposed on one side of the top of the sleeve (1). A second engaging groove (502) is provided on the inner side of the second semi-cylindrical ring (501) near the end of the sleeve (1). A second annular protrusion (503) is provided on one end of the second engaging groove (502).

6. The adjustable set screw sleeve structure according to claim 5, characterized in that, The second semi-cylindrical ring (501) has two sets of second connecting holes (504) symmetrically opened on both sides; A third bolt group (505) that mates with the first semi-cylindrical sleeve (4) is provided in a set of second connecting holes (504) away from the adjusting screw (2), and a fourth bolt group (506) that mates with the first semi-cylindrical sleeve (4) is provided in a set of second connecting holes (504) close to the adjusting screw (2). The bolt heads of the third bolt group (505) and the fourth bolt group (506) are in opposite directions to maintain the stability of the overall structure.

7. The adjustable set screw sleeve structure according to claim 1, characterized in that, The adjusting screw (2) includes a threaded rod section (201) disposed inside the sleeve (1), and one end of the threaded rod section (201) is provided with a smooth rod section (202); The smooth rod segment (202) has a connecting thread (203) on the outer side of the end away from the threaded rod segment (201). A keyway (204) is provided on one side of the smooth rod segment (202). A strip-shaped positioning key (205) that cooperates with the first semi-cylindrical sleeve (4) is fixedly provided in the keyway (204) to prevent the lead screw from rotating and to ensure adjustment accuracy.

8. The adjustable set screw sleeve structure according to claim 7, characterized in that, The top support (3) includes a connecting block (301) disposed at the top of the adjusting screw (2), and the inner side of the connecting block (301) is provided with an internal thread groove that mates with the connecting thread (203); One end of the connecting block (301) is fixedly provided with a U-shaped bracket (302) through which the adjusting screw (2) passes. The U-shaped bracket (302) is provided with elastic clips (303) on both sides for firmly clamping the scaffold steel pipe.

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