Universal adjusting ball head base bolt structure for mass concrete unit

Abstract

This invention relates to the field of building construction technology, and particularly to a universal adjustable ball head base bolt structure for large-mass concrete unit bodies. The structure includes a ball head bolt body, which comprises a base plate with a connecting groove at its upper end and a clamping member thereon. The ball head bolt component is mounted on the clamping member. The universal adjustable ball head base bolt structure for large-mass concrete unit bodies also includes a straightening part mounted on the ball head bolt component. This invention employs a linkage mechanical structure of the straightening part, guide member, and limiting member. Relying on the downward pressure of the concrete unit body's own weight, it automatically drives the ball head bolt and the support plate to rotate and reset. This passively corrects hole misalignment, forcibly adjusting the unit body mounting hole and the ball head bolt to a coaxial state. This eliminates the need for repeated alignment and fine-tuning by workers, solving the problem of cumbersome operation and significantly improving the efficiency of hoisting and docking construction.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a universal adjustable ball head base bolt structure for large-mass concrete unit bodies. Background Technology

[0002] Massive concrete unit structures, with their advantages of high load-bearing capacity, high assembly efficiency, and good structural stability, are widely used in prefabricated infrastructure, photovoltaic foundation projects, municipal civil engineering, and large-scale site hardening. The connection and fixation of these concrete unit structures to the underlying foundation installation surface generally adopts a construction method of pre-embedded base bolt butt assembly. The alignment accuracy, adaptability, load-bearing capacity, and assembly protection effect of the bolt connections directly determine the installation quality and long-term service safety of the overall structure.

[0003] However, the conventional base fixing bolt structure currently used in the industry does not have the function of multi-angle universal deflection and micro displacement adjustment in the actual assembly application of large-mass concrete units. During the hoisting of concrete units, there are problems such as tilting and offset. After multiple errors are superimposed, it is very easy to cause misalignment between the unit mounting holes and the fixing bolt holes. Conventional structures cannot adaptively compensate for various construction and manufacturing deviations. They can only be assembled by manually enlarging holes, cutting and correcting, or forcibly squeezing. This will not only cause the edge of the unit mounting hole to collide with the bolt threads, resulting in wear and breakage of the bolt threads and reducing the original structural strength, but also leave large internal stresses in the assembly. Long-term use may easily lead to unit cracking, connection failure and other hidden dangers.

[0004] In addition, the large mass concrete unit has a large self-weight load, and the hoisting and positioning control is extremely difficult. Traditional bolt assembly has no mechanical self-adaptive correction structure, and hole alignment completely depends on repeated adjustments by hoisting equipment and manual on-site calibration, which is cumbersome and has low construction efficiency.

[0005] Therefore, there is an urgent need to provide a ball head base bolt structure that is universally adjustable and has an automatic correction function. Summary of the Invention

[0006] Therefore, it is necessary to provide a universal adjusting ball head base bolt structure for large-mass concrete unit bodies, aiming to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a universal adjustable ball head base bolt structure for a large mass concrete unit, comprising: a ball head bolt body, the ball head bolt body including a base plate, the upper end of the base plate having a connecting groove, a clamping member being provided at the upper end of the base plate, and a ball head bolt being provided on the clamping member.

[0008] The universal adjustable ball head base bolt structure for the large-mass concrete unit also includes a straightening part, which is set on the ball head bolt. The straightening part includes a support plate set on the ball head bolt. Multiple circumferentially evenly distributed connectors are installed on the outer ring surface of the support plate. Positioning parts are connected to the connectors. Guide parts are slidably set on the upper side of the positioning parts. Limiting parts are set on the lower side of the positioning parts. The limiting parts cooperate with the positioning parts to control the cooperation mode between the guide parts and the positioning parts.

[0009] The positioning component includes a positioning tube fixedly connected to the connector. Multiple circumferentially evenly distributed sliding grooves are formed on the outer ring surface of the positioning tube. A positioning block is slidably connected in the sliding groove. A moving rod is installed at one end of the positioning block near the axis of the positioning tube. The moving rod slides through the wall of the positioning tube.

[0010] The limiting component includes a limiting rod that is slidably connected inside the positioning tube, and a limiting groove with an annular structure is opened on the outer ring surface of the limiting rod near the upper side.

[0011] When the mounting hole of the unit body is connected to the ball head bolt, the ball head bolt is pushed, and the ball head bolt drives the positioning component and the guide component to rotate in the direction of the mounting hole of the unit body through the support plate; at the same time as the mounting hole and the ball head bolt are inserted, the unit body pushes the guide component, and the guide component drives the support plate and the ball head bolt to rotate and reset, so as to make the mounting hole and the ball head bolt coaxial.

[0012] Preferably, the clamping component includes a threaded sleeve mounted on the upper end of the base plate, the threaded sleeve being threadedly connected to the clamping sleeve, and the lower end of the clamping sleeve being provided with an arc-shaped groove.

[0013] Preferably, the ball head bolt includes a ball head screw with the ball head end placed in the connecting groove, the ball head screw passing through the clamping sleeve, the ball head screw being threadedly connected to the support plate, and an adjusting nut and a locking nut being threadedly connected to the upper end of the ball head screw in sequence.

[0014] Preferably, the connector includes a connecting block installed on the outer ring surface of the support plate, a plug plate inserted into the connecting block, a fixing rod inserted into the plug plate, the fixing rod also engaging with the connecting block, and a placement through hole provided on the plug plate, with the positioning tube located inside the placement through hole.

[0015] Preferably, the positioning component further includes mounting rods that are circumferentially and evenly installed at the lower end of the plug-in plate, and the mounting rods are fixedly connected to the positioning tube.

[0016] Preferably, the guide component includes a guide tube that is slidably sleeved on the outer periphery of the positioning tube. The guide tube wall has multiple circumferentially evenly distributed guide openings. The guide openings are slidably engaged with the mounting rod. A reset spring is installed between the top wall of the guide tube and the top wall of the positioning tube. A positioning groove is provided on the inner annular surface of the guide tube near the lower end. The positioning groove is slidably engaged with the positioning block.

[0017] Preferably, the limiting member further includes a placement groove formed at the upper end of the limiting rod, and a connecting spring is installed between the bottom wall of the placement groove and the top wall of the positioning tube.

[0018] Preferably, a guide cylinder is installed at the upper end of the ball screw, and the diameter of the guide cylinder is smaller than the diameter of the ball screw.

[0019] Preferably, a rubber sealing sleeve is provided between the ball head screw and the clamping sleeve.

[0020] In summary, the present invention has the following beneficial technical effects: 1. The ball head bolt used in the present invention can realize multi-angle universal deflection adjustment, which can effectively compensate for the tilt deviation of the hoisting posture of large mass concrete unit, as well as the cumulative error caused by the pouring and pre-embedded construction of the foundation installation surface, reduce the high-precision pre-embedded requirements of unit docking, greatly expand the tolerance range of on-site construction, and adapt to complex construction site installation conditions.

[0021] 2. The linkage mechanical structure of the correction part, guide part and limiting part adopted in this invention relies on the downward force of the self-weight of the concrete unit to automatically drive the ball head bolt and the support plate to rotate and reset. It can passively correct the hole position offset and force the unit mounting hole and the ball head bolt to be coaxial. There is no need for the staff to repeatedly align and fine-tune the calibration. It solves the problem of the difficulty and cumbersome operation of manual alignment of large volume units. While ensuring the coaxial accuracy of assembly, it significantly improves the efficiency of hoisting and docking construction.

[0022] 3. The ball head bolt used in this invention, in conjunction with the straightening part and the guide part, utilizes the sliding fit of the guide part, the elastic buffering structure of the return spring, and the fit between the guide cylinder and the mounting hole during the docking process. This avoids hard collisions and squeezing interference between the mounting hole and the bolt thread, effectively preventing bolt thread wear and breakage failure. At the same time, it avoids defects such as cracking of the concrete mounting hole edge due to squeezing and deformation of the hole position, thus extending the service life of the ball head bolt and the unit. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0025] Figure 2 A front view of the invention is shown;

[0026] Figure 3 It shows Figure 2 Sectional view of AA;

[0027] Figure 4 It shows Figure 3 Enlarged view of region B in the middle;

[0028] Figure 5 This diagram shows the internal structure of the connector, positioning member, guide member, and limiting rod of the present invention.

[0029] Figure 6 A schematic diagram of the positioning element and limiting rod of the present invention is shown;

[0030] Figure 7 This diagram illustrates the operation of the present invention when the unit body and the foundation mounting surface are in contact.

[0031] Figure 8 This diagram illustrates the working process of the present invention as the unit body and the base mounting surface are connected.

[0032] Figure 9 This diagram illustrates the working principle of the straightening element supporting the unit body when the unit body is connected to the foundation mounting surface.

[0033] Figure 10 A schematic diagram showing the support plate for the unit body when the unit body is connected to the foundation mounting surface is shown.

[0034] The above-mentioned figures include the following reference numerals: 1. Ball head bolt body; 10. Base plate; 11. Connecting groove; 12. Clamping component; 120. Threaded sleeve; 121. Clamping sleeve; 13. Ball head bolt component; 130. Ball head screw; 131. Adjusting nut; 132. Locking nut; 133. Guide cylinder; 2. Correcting part; 20. Support plate; 21. Connecting component; 210. Connecting block; 211. Insertion plate; 212. Fixing rod; 22. Positioning component; 220. Positioning tube; 221. Sliding groove; 222. Positioning block; 223. Moving rod; 224. Mounting rod; 23. Guide component; 230. Guide tube; 231. Guide opening; 232. Return spring; 233. Positioning groove; 24. Limiting component; 240. Limiting rod; 241. Limiting groove; 242. Placement groove; 243. Connecting spring. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways not described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] See Figures 1-3 A universal adjustable ball head base bolt structure for a large-mass concrete unit is characterized by comprising a ball head bolt body 1, wherein the ball head bolt body 1 includes a base plate 10, the upper end of the base plate 10 is provided with a connecting groove 11, a clamping member 12 is provided at the upper end of the base plate 10, and a ball head bolt member 13 is provided on the clamping member 12. The ball head bolt member 13 includes a ball head screw 130 whose ball head end is placed in the connecting groove 11. The ball head screw 130 is composed of a ball head and a bolt. When the ball head screw 130 is connected to the base plate 10, the operator places the ball head of the ball head screw 130 into the connecting groove 11.

[0037] See Figures 1-3 The clamping member 12 includes a threaded sleeve 120 installed on the upper end of the base plate 10. The threaded sleeve 120 is threadedly connected to a clamping sleeve 121. The lower end of the clamping sleeve 121 is provided with an arc-shaped groove. The ball head screw 130 passes through the clamping sleeve 121.

[0038] In specific operation, when the ball end screw 130 is connected to the base plate 10, the ball end of the ball end screw 130 passes through the threaded sleeve 120 and enters the connecting groove 11. Then, the clamping sleeve 121 is fitted onto the ball end screw 130, and the clamping sleeve 121 is threaded onto the threaded sleeve 120. The arc-shaped groove at the lower end of the clamping sleeve 121 cooperates with the connecting groove 11 to realize the function of limiting the ball end of the ball end screw 130, preventing the ball end screw 130 from separating from the base plate 10. In addition, the ball end screw 130 can realize multi-angle universal deflection adjustment, which can effectively compensate for the tilt deviation of the hoisting posture of the large-mass concrete unit, as well as the cumulative error caused by the pouring and pre-embedded construction of the foundation installation surface, reduce the high-precision pre-embedded requirements of the unit docking, and improve the fault tolerance range of the unit hoisting.

[0039] See Figure 3 A rubber sealing sleeve is provided between the ball head screw 130 and the clamping sleeve 121.

[0040] After the ball head screw 130 is connected to the base plate 10, the workers put the rubber sealing sleeve on the ball head screw 130, so that its lower end fits against the upper end of the clamping sleeve 121, and then fix it to the clamping sleeve 121 with bolts. Then, before the foundation mounting surface is formed, multiple base plates 10 connected to the corresponding ball head screw 130 are placed in the required positions, and then the foundation mounting surface is cast and formed to make the base plate 10 firmly connected to the foundation mounting surface, or the base plate 10 is firmly connected to the foundation mounting surface by means of pre-drilled bolts or welding.

[0041] See Figure 1 , Figure 3 and Figure 5The large-mass concrete unit using the universal adjustable ball head base bolt structure also includes a straightening part 2 set on the ball head bolt 13. The straightening part 2 includes a support plate 20 set on the ball head bolt 13. The ball head screw 130 is threadedly connected to the support plate 20. Multiple circumferentially evenly distributed connecting parts 21 are installed on the outer ring surface of the support plate 20. The connecting parts 21 include connecting blocks 210 installed on the outer ring surface of the support plate 20. A plug plate 211 is inserted into the connecting block 210. A fixing rod 212 is inserted into the plug plate 211. The fixing rod 212 is also inserted into the connecting block 210. The plug plate 211 has a placement through hole.

[0042] In practice, before the suspension unit is installed face to face with the foundation, the workers thread the support plate 20 onto the ball head screw 130, then insert multiple plug plates 211 into the corresponding connecting blocks 210, and then pass the fixing rod 212 through the plug plates 211 and the connecting blocks 210 in sequence to achieve a fixed connection between the plug plates 211 and the support plate 20.

[0043] See Figure 1 , Figure 3 and Figure 5 The connector 21 is connected to a positioning element 22. The positioning element 22 includes a positioning tube 220 fixedly connected to the connector 21. The positioning tube 220 is located in the placement through hole. The positioning element 22 also includes an installation rod 224 circumferentially and evenly installed at the lower end of the plug plate 211. The installation rod 224 is fixedly connected to the positioning tube 220.

[0044] In actual operation, when the plug-in plate 211 is fixedly installed on the support plate 20, the positioning tube 220 is fixedly connected to the plug-in plate 211 through multiple mounting rods 224 and is fixed in the working position together with the plug-in plate 211.

[0045] See Figure 1 and Figures 3-6 A guide 23 is slidably disposed on the upper side of the positioning component 22. The guide 23 includes a guide tube 230 that is slidably sleeved on the outer periphery of the positioning tube 220. The upper end of the guide tube 230 is provided with a hemispherical surface. Multiple circumferentially evenly distributed guide openings 231 are opened on the tube wall of the guide tube 230. The guide openings 231 are slidably engaged with the mounting rod 224. A return spring 232 is installed between the top wall of the guide tube 230 and the top wall of the positioning tube 220.

[0046] In actual operation, when the positioning tube 220 is fixed in the working position, the positioning tube 220 drives the guide tube 230 to move to the working position through the return spring 232. The multiple guide openings 231 on the guide tube 230 slide and cooperate with the mounting rod 224 to guide the movement of the guide tube 230 and prevent the guide tube 230 from rotating circumferentially on the outer periphery of the positioning tube 220.

[0047] See Figure 1 and Figures 3-6 The positioning tube 220 has multiple circumferentially evenly distributed sliding grooves 221 on its outer ring surface. A positioning block 222 is slidably connected in the sliding groove 221. An inclined surface is provided on the upper side of the end of the positioning block 222 away from the axis of the positioning tube 220. A positioning groove 233 is provided on the inner ring surface of the guide tube 230 near the lower end. The positioning groove 233 is slidably engaged with the positioning block 222. A moving rod 223 is installed on the end of the positioning block 222 near the axis of the positioning tube 220. The moving rod 223 is composed of a round rod and a ball. The moving rod 223 slides through the tube wall of the positioning tube 220. The ball section of the moving rod 223 is located inside the positioning tube 220.

[0048] See Figure 1 and Figures 3-6 A limiting member 24 is provided on the lower side of the positioning member 22. The limiting member 24 cooperates with the positioning member 22 to control the cooperation mode between the guide member 23 and the positioning member 22. The limiting member 24 includes a limiting rod 240 slidably connected in the positioning tube 220. The lower end of the limiting rod 240 is provided with a hemispherical protrusion. The outer ring surface of the limiting rod 240 is provided with a limiting groove 241 with an annular structure near the upper side. The upper end of the limiting groove 241 is provided with an arc-shaped surface. The arc-shaped surface is slidably engaged with the spherical section of the moving rod 223. The limiting member 24 also includes a placement groove 242 opened at the upper end of the limiting rod 240. A connecting spring 243 is installed between the bottom wall of the placement groove 242 and the top wall of the positioning tube 220.

[0049] In actual operation, when the positioning tube 220 is fixed in the working position, the positioning tube 220 drives the hemispherical protrusion of the limiting rod 240 to move to the working position (i.e., the upper end of the base plate 10) through the connecting spring 243. In the initial state, the upper end of the outer ring surface of the limiting rod 240 is in close contact with the spherical sections of multiple moving rods 223, realizing the function of limiting the moving rods 223. At the same time, multiple positioning blocks 222 are inserted into the positioning grooves 233, thereby limiting the vertical direction of the guide tube 230 and guiding it. The guide tube 230 and the positioning tube 220 are engaged by multiple positioning blocks 222 to prevent relative sliding between the guide tube 230 and the positioning tube 222. By adjusting the support plate 20 located on the ball head screw 130, the support plate 20 drives the positioning tube 220 to move downward through the connector 21. The positioning tube 220 drives multiple moving rods 223 to move to the limiting groove 241. At this time, the connecting spring 243 is in a compressed state, and the limiting rod 240 releases the limiting of the multiple moving rods 223.

[0050] See Figure 3 The ball head screw 130 has a guide cylinder 133 installed at its upper end, and the diameter of the guide cylinder 133 is smaller than the diameter of the ball head screw 130.

[0051] In specific operations, when the mounting hole of the unit body aligns with the ball head bolt 13, the operator pushes the ball head bolt 13. The ball head bolt 13, through the support plate 20, causes the positioning component 22 and the guide component 23 to rotate towards the mounting hole of the unit body. The specific steps are as follows: based on the slight posture deviation of the unit body and the positional deviation of the foundation mounting surface, the ball head screw 130 is pushed. The ball head screw 130 causes the guide cylinder 133 to rotate to the mounting hole of the unit body. The rotating ball head screw 130, through the support plate 20, causes multiple connecting components 21 to rotate. These multiple connecting components 21 then cause multiple guide tubes 230, multiple positioning tubes 220, and multiple limiting rods 240 to rotate. The limiting rod 240 near the rotation direction moves closer to the top wall of the positioning tube 220. The limiting groove 241 has a certain width, providing conditions for the movement of the limiting rod 240 during rotation. The lower end of the limiting rod 240 away from the rotation direction gradually separates from the base plate 10. The compressed connecting spring 243 resets and drives the upper end of the outer ring surface of the limiting rod 240 to move back to the ball section of the multiple moving rods 223 and re-limit the multiple moving rods 223, so that the guide tube 230 and the positioning tube 220 are re-engaged. That is, after the guide tube 230 is subjected to force, it directly transmits the force to the positioning tube 220, the connector 21, the support plate 20 and the ball head screw 130.

[0052] Subsequently, the guide cylinder 133 on the ball screw 130 tilts into the mounting hole of the unit, while the bottom of the unit is in close contact with the hemispherical surface at the upper end of the corresponding guide tube 230 (e.g., Figure 7 As shown), the unit pushes the guide 23, which in turn drives the support plate 20 and the ball head bolt 13 to rotate and reset, causing the mounting holes to be coaxial with the ball head bolt 13. The specific steps are as follows: As the unit descends, the bottom components of the unit push the fitted guide tube 230. The guide tube 230, under pressure, drives the positioning tube 220, connector 21, support plate 20, and ball head bolt 130 to rotate. The rotating ball head bolt 130 simultaneously corrects the position of the suspended unit, eliminating the need for repeated alignment and fine-tuning by personnel. When the support plate 20 rotates back to a horizontal position, the mounting holes on the unit are coaxially distributed with the ball head bolt 130 (as shown). Figure 8 As shown), at this time, the limiting groove 241 on the limiting rod 240 moves back to the ball section of the multiple moving rods 223, releasing the limitation on the moving rods 223.

[0053] The suspended unit continues to move towards the foundation mounting surface. Simultaneously, the bottom of the unit pushes against multiple guide tubes 230. These guide tubes 230, under pressure, slide relative to the positioning tubes 220 and move towards the foundation mounting surface. At the same time, the mounting hole assembly on the unit is fitted onto the ball head screw 130. This process effectively prevents collisions between the mounting holes and the threads on the ball head screw 130, preventing thread damage and deformation of the mounting holes. The suspended unit continues to descend until it reaches the upper end of the support plate 20. At this point, the upper ends of the multiple guide tubes 230 are flush with the upper end of the support plate 20, and the lower ends of the guide tubes 230 are in contact with the base plate 10. Following the same steps, the multiple mounting holes of the unit simultaneously mate with the multiple ball head screws 130. If the unit has a large mass, the multiple guide tubes 230 on the outer periphery of the ball head screw 130 cooperate with the support plate 20 to jointly support the unit, effectively ensuring the stability between the unit and the foundation mounting surface (e.g., ...). Figure 9 (As shown); If the mass of the unit is small, the fixing rod 212 can be removed, and the plug plate 211 can be separated from the connecting block 210, thereby releasing the support of multiple guide tubes 230 on the unit. The separated guide tubes 230 can then be used to connect the next unit to the foundation mounting surface (e.g. Figure 10 (As shown).

[0054] See Figure 3 The upper end of the ball head screw 130 is sequentially threaded with an adjusting nut 131 and a locking nut 132.

[0055] In practice, after the unit body is placed on the upper end of the support plate 20, the adjusting nut 131 is threaded onto the ball head screw 130 and rotated to the upper end of the mounting hole of the unit body. Then, the locking nut 132 is threaded onto the ball head screw 130 and rotated to the upper end of the adjusting nut 131 to achieve a fixed connection between the unit body and the foundation mounting surface. The connection between the unit body and the foundation mounting surface is completed.

[0056] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," 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 the embodiments of the present invention and for 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 the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0057] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A universal adjustable ball head base bolt structure for a large-mass concrete unit, characterized in that, include: The ball head bolt body includes a base plate, a connecting groove is provided at the upper end of the base plate, a clamping member is provided at the upper end of the base plate, and a ball head bolt is provided on the clamping member; A straightening part is provided on the ball head bolt. The straightening part includes a support plate provided on the ball head bolt. Multiple circumferentially evenly distributed connectors are installed on the outer ring surface of the support plate. A positioning element is connected to the connector. A guide element is slidably provided on the upper side of the positioning element. A limit element is provided on the lower side of the positioning element. The limit element cooperates with the positioning element to control the cooperation mode between the guide element and the positioning element. The positioning component includes a positioning tube fixedly connected to the connector. Multiple circumferentially evenly distributed sliding grooves are provided on the outer ring surface of the positioning tube. A positioning block is slidably connected in the sliding groove. A moving rod is installed at one end of the positioning block near the axis of the positioning tube. The moving rod slides through the wall of the positioning tube. The limiting component includes a limiting rod that is slidably connected inside the positioning tube, and a limiting groove with an annular structure is provided on the outer ring surface of the limiting rod near the upper side; When the mounting hole of the unit body is connected to the ball head bolt, the ball head bolt is pushed, and the ball head bolt drives the positioning component and the guide component to rotate in the direction of the mounting hole of the unit body through the support plate; at the same time as the mounting hole and the ball head bolt are inserted, the unit body pushes the guide component, and the guide component drives the support plate and the ball head bolt to rotate and reset, so as to make the mounting hole and the ball head bolt coaxial.

2. The universal adjustable ball head base bolt structure for a large-mass concrete unit body according to claim 1, characterized in that: The clamping component includes a threaded sleeve mounted on the upper end of the base plate, the threaded sleeve being threadedly connected to the clamping sleeve, and the lower end of the clamping sleeve being provided with an arc-shaped groove.

3. The universal adjustable ball head base bolt structure for a large-mass concrete unit body according to claim 2, characterized in that: The ball head bolt includes a ball head screw with the ball head end placed in the connecting groove, the ball head screw passing through the clamping sleeve, the ball head screw being threadedly connected to the support plate, and an adjusting nut and a locking nut being threadedly connected to the upper end of the ball head screw in sequence.

4. The universal adjustable ball head base bolt structure for a large-mass concrete unit as described in claim 1, characterized in that: The connector includes a connecting block installed on the outer ring surface of the support plate, a plug plate inserted into the connecting block, a fixing rod inserted into the plug plate, the fixing rod also engaging with the connecting block, and a placement through hole opened on the plug plate, with the positioning tube located inside the placement through hole.

5. The universal adjustable ball head base bolt structure for a large-mass concrete unit body according to claim 4, characterized in that: The positioning component also includes mounting rods that are circumferentially and evenly installed at the lower end of the plug-in plate, and the mounting rods are fixedly connected to the positioning tube.

6. The universal adjustable ball head base bolt structure for a large-mass concrete unit body according to claim 5, characterized in that: The guide component includes a guide tube that is slidably sleeved on the outer periphery of the positioning tube. Multiple circumferentially evenly distributed guide openings are provided on the wall of the guide tube. The guide openings are slidably engaged with the mounting rod. A reset spring is installed between the top wall of the guide tube and the top wall of the positioning tube. A positioning groove is provided on the inner annular surface of the guide tube near the lower end. The positioning groove is slidably engaged with the positioning block.

7. The universal adjustable ball head base bolt structure for a large-mass concrete unit according to claim 1, characterized in that: The limiting component also includes a placement groove formed at the upper end of the limiting rod, and a connecting spring is installed between the bottom wall of the placement groove and the top wall of the positioning tube.

8. The universal adjustable ball head base bolt structure for a large-mass concrete unit body according to claim 3, characterized in that: A guide cylinder is installed at the upper end of the ball-end screw, and the diameter of the guide cylinder is smaller than the diameter of the ball-end screw.

9. The universal adjustable ball head base bolt structure for a large-mass concrete unit according to claim 3, characterized in that: A rubber sealing sleeve is provided between the ball head screw and the clamping sleeve.

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