Pillar base nut mounting rod for narrow working face under deep bearing platform

Abstract

The utility model discloses a deep bearing platform narrow working face column foot nut mounting rod which comprises a telescopic rod, the telescopic rod comprises an upper rod and a lower rod which are matched in a sleeved mode, the lower rod is arranged on the upper rod in a sleeved mode and is fixed through a locking device, a control handle is arranged on the top of the upper rod, and an adjustable clamping and fixing mechanism is arranged at the bottom of the lower rod. The upper rod and the lower rod are of telescopic structures and are locked through the locking device, so that the length of the mounting rod can be freely adjusted according to the depth of a bearing platform, and the long-distance mounting of the column foot nut is achieved. By arranging the adjustable clamping mechanism, the nuts of different specifications can be clamped on the clamping mechanism, and the installation problem of the column foot nuts under different construction conditions is effectively solved. By arranging the control handle, a constructor can operate the telescopic rod conveniently, so that the nut is screwed, the connection tightness of the anchor bolt and the nut is guaranteed, and the construction efficiency and quality of nut installation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering construction, in particular to a column foot nut installation device. Background Art

[0002] With the accelerated development of globalization and informatization, international exchanges and cooperation are becoming increasingly frequent. As a key communication platform, exhibitions and conferences are becoming increasingly important. Due to the large spans and high building heights of large exhibition and conference center projects, to meet the load-bearing capacity and safety requirements of steel structures, the pedestals are often designed to be relatively deep. In some pedestals, the column bases are located close to the edge of the pedestal, causing the outer reinforcement of the column base to be closely attached to the edge of the pedestal, resulting in a narrow working surface. This makes it difficult for construction workers to reach the bottom of the pedestal for delicate operations such as installing column base nuts. Existing methods for installing column base nuts mainly include the following: In situations where the working space is relatively large, construction workers can directly access the pedestal and install the nuts using wrenches or specialized tools. However, in narrow working areas, when installing column foot nuts, construction workers often spot-weld the spacers and nuts to the bottom of the steel pipe, then extend them down and slip them over the column foot anchor bolts before starting to twist. This practice often causes the weld to break halfway through, preventing further twisting. This directly leads to a loose and inaccurate connection between the anchor bolt and the foundation or steel column, which in turn affects the installation quality and construction acceptance of the entire steel structure. It also makes the steel structure prone to displacement or deformation under load, thus affecting the safety and overall stability of the structure. In addition, most existing installation tools lack telescopic functions and cannot adapt to the requirements of foundation pits of varying depths, limiting their scope of application.

[0003] For example, Chinese patent publication number CN202322711841 discloses a nut installation tool that can sequentially secure a nut and a spring washer, allowing for a single-step assembly of the nut. However, this tool fails to address the long installation distance and operational difficulties associated with column foot nut installation. Utility Model Content

[0004] In response to the deficiencies in the above-mentioned background technology, the present invention proposes a column foot nut installation rod for a narrow working surface under a deep pedestal, which solves the problems of long installation distance and difficult operation when installing column foot nuts on a narrow working surface in the prior art.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A column foot nut installation rod for a narrow working surface under a deep pedestal comprises a telescopic rod comprising a sleeve-fitting upper rod and a lower rod. The lower rod is sleeved onto the upper rod and secured by a locking device. An operating handle is provided at the top of the upper rod, and an adjustable clamping mechanism is provided at the bottom of the lower rod. By providing the sleeve-fitting upper and lower rods, the telescopic rod can be freely extended and retracted according to the depth of the pedestal. By providing a locking device, the telescopic rod can be fixed after adjustment and extension, preventing accidental extension and retraction during operation. The provision of an operating handle facilitates construction workers to operate the telescopic rod to tighten the nut. By providing an adjustable clamping mechanism, the installation rod can clamp column foot nuts of different specifications for installation.

[0007] Furthermore, the locking device includes a locking head and a locking cap for adjusting the locking state of the locking head. The locking head is fixed to the top of the lower rod, and the locking cap is mounted on the locking head and engages with a wedge surface of the locking head. The locking head and the wedge surface of the locking cap engage to lock the locking head with the upper rod, thereby ensuring the stability of the telescopic rod after the length is adjusted.

[0008] Furthermore, the locking head is a hollow cylinder. Its upper side is provided with N axial through-grooves (N ≥ 2) around the axis. These through-grooves divide the upper portion of the locking head into N identically curved petals (N). The upper portion of the locking head is formed with a conical surface I, and its lower portion is provided with external threads I. The inner side of the upper portion of the locking cap is provided with a conical surface II that mates with conical surface I. The inner diameter of conical surface II gradually increases from top to bottom, and the inner side of the lower portion of the locking cap is provided with internal threads that mate with external threads I. The wedge-shaped surfaces of conical surfaces I and II cooperate to secure the locking head to the upper rod, and the threaded engagement of the nut and the locking head enhances the stability of the locking device.

[0009] Furthermore, the clamping mechanism includes a clamping sleeve and a locking nut. The clamping sleeve is fixed to the bottom of the lower rod, and the locking nut is sleeved on the clamping sleeve and is used to clamp the clamping sleeve to the nut. The clamping sleeve is locked by the locking nut, thereby ensuring the stability of the column foot nut.

[0010] Furthermore, the clamping sleeve is a hexagonal sleeve fixed to the lower end of the lower rod and arranged coaxially with the lower rod. The lower portion of the hexagonal sleeve is provided with an external thread II. The lower portion of the hexagonal sleeve is provided with six axial through slots II around the axis. The through slots II divide the lower portion of the clamping sleeve into six petals II. The six petals II correspond to the six side surfaces of the nut and can clamp the nut. The locking nut is threadedly engaged with the external thread II and can lock the clamping sleeve holding the nut. The column foot nut is installed in the clamping sleeve, and the petals II clamp the column foot nut, which is then locked by threaded engagement with the locking nut, ensuring that the column foot nut is firmly connected to the clamping sleeve.

[0011] Furthermore, a protective sleeve is provided in the clamping sleeve. The protective sleeve is a regular hexagonal cylindrical body. One end of the protective sleeve is fixed to the bottom of the lower rod, and the other end is provided with an opening. The side of the opening is provided with six axial through slots 3 around the axis. The through slots 3 are located at the corners of the protective sleeve. The through slots 3 divide the side of the opening into six petals 3, and the petal 3 is fixed to the inner side of the petal 2. The protective sleeve is provided in the interior of the clamping sleeve, thereby reducing the wear of the column foot nut and the clamping sleeve and extending the service life.

[0012] Furthermore, the protective cover is a soft rubber cover, which plays a role in reducing pressure and shock, thereby ensuring the stability of the nut.

[0013] Furthermore, the operating handle is a rotating rod, which is vertically connected to the upper rod. The telescopic rod is rotated by the rotating rod to screw the nut.

[0014] Furthermore, the rotating rod is rotatably connected to the upper rod via a pin, so that when the telescopic rod is blocked by an obstacle, the rotating rod can be rotated to different angles, thereby making it easier to hold and rotate the telescopic rod.

[0015] The beneficial effects of the utility model are:

[0016] The utility model connects the upper rod and the lower rod through a locking device to form an adjustable telescopic system, so that the telescopic rod can be freely extended and retracted according to the depth of the pedestal, thereby adapting to pedestals of different depths and realizing the installation of column foot nuts at long distances and in narrow conditions. When the telescopic rod is adjusted to the required length, it is fixed by providing a locking device to prevent accidental extension and retraction during operation. By providing an adjustable clamping mechanism, nuts of different specifications can be clamped and stably clamped. Then, by rotating the telescopic rod, the nut is driven to rotate relative to the column foot, thereby realizing rapid installation of the nut on the column foot, effectively solving the problem of column foot nut installation under different construction conditions and facilitating operation by construction personnel. By providing a protective cover, the wear between the nut and the clamping mechanism is reduced, the components are protected, and the service life is extended. By providing an operating handle, it is convenient for construction personnel to operate the telescopic rod to tighten the nut, ensuring construction safety and improving the construction efficiency and quality of nut installation.

[0017] The utility model designs a mounting rod with compact structure, simple operation, stability and reliability, which enables construction workers to complete the installation of column foot nuts safely and efficiently under pedestals of different depths without entering narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection of the locking head of the utility model;

[0021] Figure 3 This is a top view of the locking head of the utility model;

[0022] Figure 4 This is a cross-sectional view of the lock cap of the utility model;

[0023] Figure 5 This is a schematic structural diagram of the clamping mechanism of the utility model;

[0024] Figure 6 This is a bottom view of the clamping sleeve of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the condom of the utility model;

[0026] Figure 8 It is a cross-sectional view of the lower rod of the utility model;

[0027] 1. Telescopic rod; 11. Upper rod; 12. Lower rod; 2. Locking device; 21. Locking head; 22. Locking cap; 23. Through slot 1; 24. External thread Ⅰ; 25. Conical surface Ⅰ; 26. Conical surface Ⅱ; 27. Internal thread; 3. Operating handle; 4. Clamping mechanism; 41. Clamping sleeve; 42. Locking nut; 43. External thread Ⅱ; 5. Through slot 2; 6. Protective cover; 61. Through slot 3; 7. Slider. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1, in this embodiment, as Figure 1As shown, a column foot nut installation rod for a narrow working surface under a deep pedestal includes a telescopic rod 1, wherein the telescopic rod 1 includes an upper rod 11 and a lower rod 12 that are sleeved together. The lower rod 12 is sleeved on the upper rod 11 so that the upper rod 11 can slide inside the lower rod 12. The upper rod 11 and the lower rod 12 are fixed by a locking device 2. When the telescopic rod 1 is adjusted to the required length, it is locked by the locking device 2 to prevent accidental extension and retraction during construction. The top of the upper rod 11 is fixedly connected to an operating handle 3, and the operating handle 3 is used to control the rotation of the telescopic rod 1 to tighten the nut. An adjustable clamping mechanism 4 is provided at the bottom of the lower rod 12. The clamping mechanism 4 can clamp nuts of different specifications, thereby effectively solving the installation problem of column foot nuts under different conditions.

[0030] Based on the above embodiment, as a preferred embodiment, a slider 7 is provided on the inner side of the lower rod 12, and a groove is provided on the upper rod 11. The slider 7 slidably engages with the groove, allowing the upper rod 11 to move only up and down within the lower rod 12, but not rotate. This ensures the stability of the upper and lower rods 11, 12 during telescoping. Furthermore, when the operating handle 3 is rotated to install the column foot nut, the engagement of the slider 7 with the groove enables the upper rod 11 to rotate the lower rod 12, ensuring stable installation of the column foot nut.

[0031] Example 2 is further optimized based on Example 1. In this example, Figure 2 As shown, the locking device 2 includes a locking head 21 and a locking cap 22 for adjusting the locking state of the locking head 21. The locking head 21 is fixed to the top of the lower rod 12, and the locking cap 22 is mounted on the locking head 21 and engages with the wedge surface of the locking head 21. When the locking head 21 and the locking cap 22 engage with the wedge surface, the locking head 21 is adjusted to the locked state: the locking head 21 is tightly attached to the upper rod 11, thereby locking the upper rod 11 and the lower rod 12.

[0032] Based on the above embodiment, as a preferred embodiment, the locking head 21 is a hollow cylinder. The upper side surface of the locking head 21 is provided with N axial through-grooves 1 23 around the axis, where N ≥ 2. The through-grooves 1 23 divide the upper portion of the locking head 21 into N identically curved petals 1; when the lower rod 12 is sleeved onto the upper rod 11, the petals 1 are evenly distributed axially around the upper rod 11. The upper portion of the locking head 21 is provided with a conical surface I 25, the outer diameter of which gradually increases from top to bottom. The lower portion of the locking head 21 is provided with an external thread I 24. The inner side of the upper portion of the locking cap 22 is provided with a conical surface II 26 that mates with the wedge surface of conical surface I 25, and the inner diameter of conical surface II 26 gradually increases from top to bottom. The minimum inner diameter of conical surface I 25 is smaller than the minimum outer diameter of conical surface II 26. When the locking head 21 and the locking cap 22 are wedge-engaged, conical surface II 26 compresses conical surface I 25, causing the petals on the locking head 21 to grip the upper rod 11, thereby adjusting the locking head 21 to the locked state. The lower inner side of the locking cap 22 is provided with an internal thread 27 that mates with the external thread I 24, securing the locking cap 22 to the locking head 21 for locking.

[0033] Example 3 is further optimized based on Example 1. In this example, Figure 5 As shown, the clamping mechanism 4 includes a clamping sleeve 41 and a locking nut 42. The clamping sleeve 41 is fixed to the bottom of the lower rod 12. The locking nut 42 is sleeved on the clamping sleeve 41 and is used to clamp the nut of the clamping sleeve 41. The clamping sleeve 41 is a hexagonal sleeve, which is fixed to the lower end of the lower rod 12 and is coaxial with the lower rod 12, so that the lower rod 12 can drive the nut in the clamping sleeve 41 to rotate relative to the column foot. The lower part of the hexagonal sleeve is provided with an external thread II 43, and the lower part of the hexagonal sleeve is provided with six axial through grooves II 44 around the axis. The positions of the through grooves II 44 correspond to the six corners inside the clamping sleeve 41, and the through grooves II 44 divide the lower part of the clamping sleeve 41 into six petals II. The six petals II correspond to the six sides of the nut and can clamp the nut. The six petals II are tightened toward the inside of the clamping sleeve 41 to form a regular hexagon that matches the six sides of the nut. The locking nut 42 is threadedly engaged with the external thread II 43 and can lock the clamping sleeve 41 holding the nut.

[0034] Specifically, the clamping sleeve 41 is made of a flexible material. When nuts of different sizes are installed on the clamping sleeve 41, the lower flap 2 of the clamping sleeve 41 fits against the column nut. The column nut presses the lower flap 2 of the clamping sleeve 41 outward. At this time, the locking nut 42 engages with the external thread II 43 on the flap 2 to tighten, thereby clamping the column nuts of different sizes on the clamping sleeve 41.

[0035] On the basis of the above embodiment, as a preferred embodiment, a protective sleeve 6 is provided in the clamping sleeve 41. The protective sleeve 6 is a rubber soft sleeve of a regular hexagonal prism. One end of the protective sleeve 6 is fixed to the bottom of the lower rod 12, and the other end is provided with an opening. The side of the opening is provided with six axial through grooves 3 61 around the axis. The through grooves 3 61 are located at the corners of the protective sleeve 6. The through grooves 3 61 divide the side of the opening into six petals 3. Petal 3 is fixed to the inner side of petal 2. Petal 3 is fitted correspondingly to petal 2 of the clamping sleeve 41, so that the protective sleeve 6 fits inside the clamping sleeve 41, thereby reducing the wear of the column foot nut and the clamping sleeve 41 and extending the service life.

[0036] Example 4 further optimizes Example 1. In this embodiment, the operating handle 3 is a rotating rod mounted perpendicularly to the upper rod 11. The rotating rod is pivotally connected to the upper rod 12 via a pin. This pivoting connection allows the telescopic rod 1 to rotate to different angles when obstructed by obstacles, making it easier to grip and rotate the telescopic rod. When in operation, the rotating rod is perpendicular to the upper rod 11, making it easier for construction workers to apply force and rotate the telescopic rod to install the nut. When not in operation, the rotating rod is parallel to the upper rod 11 for convenient storage.

[0037] This utility model is primarily used for long-distance deep caps, where the distance between the column foot reinforcement and the cap edge is too close, resulting in a narrow working surface. Construction workers cannot manually install the nuts at the bottom of the cap when installing them. When installing nuts on deep caps, this utility model can adapt to different nut specifications and cap depths, enabling rapid installation of column foot nuts.

[0038] The utility model is designed for use under a deep cap with a narrow working surface and limited space. Construction workers first adjust the length of the telescopic rod 1 according to the cap depth and secure it with the locking device 2. The nut is then installed and clamped in the clamping mechanism 4. Using the operating handle 3, the telescopic rod 1 is lowered to the top surface of the column anchor bolt, and the nut is aligned with the column anchor bolt. Finally, the operating handle 3 is rotated to tighten the nut. The entire installation process eliminates the need for construction workers to delve into the base of the cap, significantly improving construction efficiency and safety.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A column foot nut mounting rod for a narrow working surface under a deep bearing platform, characterized by: The telescopic rod (1) comprises an upper rod (11) and a lower rod (12) which are sleeved together, the lower rod (12) being sleeved on the upper rod (11) and fixed by a locking device (2), a manipulation handle (3) being provided at the top of the upper rod (11), and an adjustable clamping mechanism (4) being provided at the bottom of the lower rod (12); The locking device (2) comprises a locking head (21) and a locking cap (22) for adjusting the locking state of the locking head (21), the locking head (21) being fixed to the top of the lower rod (12), and the locking cap (22) being sleeved on the locking head (21) and cooperating with the wedge surface of the locking head (21); The clamping mechanism (4) comprises a clamping sleeve (41) and a locking nut (42). The clamping sleeve (41) is fixed to the bottom of the lower rod (12), and the locking nut (42) is sleeved on the clamping sleeve (41) and is used to clamp the clamping sleeve (41) to the nut.

2. The column foot nut mounting rod for a narrow working surface under a deep pedestal according to claim 1, characterized in that: The locking head (21) is a hollow cylinder. The upper side surface of the locking head (21) is provided with N axial through grooves (23) around the axis, N ≥ 2. The through grooves (23) divide the upper part of the locking head (21) into N petals with the same arc surface. The upper part of the locking head (21) is a conical surface I (25), and the lower part of the locking head (21) is provided with an external thread I (24); the inner side of the upper part of the locking cap (22) is provided with a conical surface II (26) matching the conical surface I (25), and the inner diameter of the conical surface II (26) gradually increases from top to bottom. The inner side of the lower part of the locking cap (22) is provided with an internal thread (27) matching the external thread I (24).

3. The column foot nut mounting rod for a narrow working surface under a deep bearing platform according to claim 1, characterized in that: The clamping sleeve (41) is a hexagonal sleeve, which is fixed to the lower end of the lower rod (12) and is coaxially arranged with the lower rod (12). The lower part of the hexagonal sleeve is provided with an external thread II (43), and the lower part of the hexagonal sleeve is provided with six axial through grooves II (44) around the axis. The through grooves II (44) divide the lower part of the clamping sleeve (41) into six petals II, and the six petals II correspond to the six side surfaces of the nut and can clamp the nut; the locking nut (42) is threadedly matched with the external thread II (43) and can lock the clamping sleeve (41) holding the nut.

4. The column foot nut mounting rod for a narrow working surface under a deep bearing platform according to claim 3, characterized in that: The clamping sleeve (41) is provided with a protective sleeve (6) in a regular hexagonal cylindrical body. One end of the protective sleeve (6) is fixed to the bottom of the lower rod (12), and the other end is provided with an opening. The side surface of the opening is provided with six axial through grooves (61) around the axis. The through grooves (61) are located at the corners of the protective sleeve (6). The through grooves (61) divide the side surface of the opening into six petals (3). Petal (3) is fixed to the inner side surface of petal (2).

5. The column foot nut mounting rod for a narrow working surface under a deep bearing platform according to claim 4, characterized in that: The protective cover (6) is a soft rubber cover.

6. The column foot nut installation rod for the narrow working surface under the deep bearing platform according to claim 1, wherein the operating handle (3) is a rotating rod, and the rotating rod is vertically connected to the upper rod (11).

7. The column foot nut mounting rod for a narrow working surface under a deep bearing platform according to claim 6, characterized in that: The rotating rod is rotatably connected to the upper rod (11) via a pin.

8. The column foot nut mounting rod for a narrow working surface under a deep bearing platform according to any one of claims 1 to 7, characterized in that: A slider (7) is provided on the inner side of the lower rod (12), and a groove is provided on the upper rod (11), and the slider (7) is in sliding engagement with the groove.

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