Centering and positioning device for concrete pole reinforcement cage

Abstract

The utility model belongs to the field of cement pole reinforcement cage installation, and particularly relates to a cement pole reinforcement cage centering and positioning device which comprises a tray, the side face of the tray is fixedly connected with connecting blocks in a rectangular array mode, and the side faces of the connecting blocks are fixedly connected with extending assemblies. The end, away from the connecting block, of the extension assembly is fixedly connected with a moving assembly, the extension assembly comprises a square pipe fixedly connected with the connecting block, a sliding groove is formed in the top face of the square pipe in the length direction, an extension rod is slidably connected into the square pipe, and a screw penetrating through the sliding groove is fixedly connected to the top face of the extension rod. The extension length of the extension rod in the square tube can be manually adjusted through the sliding connection structure of the square tube and the extension rod in cooperation with the locking function of the screw rod and the extrusion plate, so that the structural design of the moving assembly relative to the horizontal position of the tray is adjusted, the function of adapting to pits with different diameters is achieved, and the problem of limitation of a traditional fixed centering structure is solved; and the universality and the construction efficiency are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of cement pole reinforcement cage installation, specifically a cement pole reinforcement cage centering and positioning device. Background Technology

[0002] Whether the center deviation of the cement pole is within the specified range is the primary criterion for judging whether a cement pole is qualified. The installation of the reinforcing cage is a crucial step in the construction of bored piles. If the center point of the cement pole and reinforcing cage is excessively misaligned, it will cause eccentric compression of the cement pole, reducing the load-bearing capacity of the pile foundation and posing a significant quality hazard.

[0003] In the prior art, such as in publication number CN221972408U, a centering and adjusting positioning device for a pile foundation reinforcement cage is disclosed. It includes a positioning ring body with several sets of positioning plates arranged in a circumferential array on the positioning ring body for positioning the reinforcement cage; an adjusting ring is rotatably arranged on the positioning ring body, with several sets of arc-shaped grooves correspondingly arranged in a circumferential array on the adjusting ring, the arc-shaped grooves extending from the near-center end to the far-center end of the adjusting ring, wherein a pin is slidably embedded in the arc-shaped groove, and the pin is fixed to the positioning plate by an L-shaped support rod; it also includes a rotating mechanism for adjusting the rotation angle of the adjusting ring.

[0004] Although the aforementioned patent achieves positioning of the positioning plate by driving the positioning ring to rotate through a rotating mechanism, which eliminates the need for multiple operators to work simultaneously and thus increases efficiency, it lacks a structure for centering and positioning the rebar cage when lowering it into the pit. This can lead to quality issues with the finished cement pole if the rebar cage is misaligned in the pit. Furthermore, the size of the centering structure cannot be adjusted according to the dimensions of different pits, limiting its applicability and practicality. Therefore, to address these issues, a cement pole rebar cage centering and positioning device is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies and the problems associated with the installation of cement pole reinforcement cages, this utility model proposes a centering and positioning device for cement pole reinforcement cages.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a cement pole steel cage centering and positioning device of this utility model includes a tray, on the side of the tray are fixedly connected to connecting blocks in a rectangular array, on the side of the connecting blocks are fixedly connected to an extension component, and on the end of the extension component away from the connecting block is fixedly connected to a moving component.

[0007] The extension assembly includes a square tube fixedly connected to the connecting block. A groove is formed on the top surface of the square tube along its length. An extension rod is slidably connected inside the square tube. A screw rod passing through the groove is fixedly connected to the top surface of the extension rod. A pressing plate that presses against the top surface of the square tube is threaded to the top of the screw rod.

[0008] The movable component includes a roller fixedly connected to the end of the extension rod, a slide rail perpendicular to the extension rod slidably connected to the side of the roller, and a limit plate fixedly connected to the top of the slide rail.

[0009] Preferably, the inner wall of the square tube of the extension component is adapted to the cross-sectional shape of the extension rod, and when the extension rod slides back and forth along the length of the square tube, the screw moves synchronously in the groove.

[0010] Preferably, the axis of the screw is perpendicular to the extension direction of the groove, and the lower surface of the extrusion plate forms a locking state on the extension rod when it contacts the top surface of the square tube.

[0011] Preferably, the extrusion plate includes a nut portion threadedly connected to the screw and a pressure plate, and the lower surface of the pressure plate is provided with anti-slip texture that contacts the top surface of the square tube.

[0012] Preferably, the bottom surface of the slide rail of the moving component is coplanar with the rolling surface of the roller, and the width of the limiting plate is greater than the width of the slide rail.

[0013] Preferably, the four moving components are respectively connected to the four sides of the tray through corresponding extension components, and the slide rail forms a vertical limiting moving structure when it contacts the side wall of the pit, and the limiting plate abuts against the top edge of the pit.

[0014] The advantages of this utility model are:

[0015] 1. This utility model, through the sliding connection structure of the square tube and the extension rod, combined with the locking function of the screw and the extrusion plate, allows for manual adjustment of the extension length of the extension rod from inside the square tube, thereby adjusting the horizontal position of the moving component relative to the pallet. This structural design enables the device to adapt to pits of different diameters, solves the limitations of traditional fixed centering structures, and significantly improves versatility and construction efficiency.

[0016] 2. This utility model uses a sliding connection between the inner roller of the slide rail and the end of the extension rod. During the lowering of the steel cage, the slide rail contacts the side wall of the pit to form a vertical guide channel, which restricts the horizontal displacement of the pallet. This structural design ensures that the steel cage always sinks accurately in the vertical direction and solves the problem of center deviation caused by skewness. 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 description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the extended component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the mobile component of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Tray; 2. Connecting block; 3. Extension assembly; 31. Square tube; 32. Extension rod; 33. Screw; 34. Extrusion plate; 4. Moving assembly; 41. Roller; 42. Slide rail; 43. Limiting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1-4 As shown, a cement pole rebar cage centering and positioning device includes a tray 1. Connecting blocks 2 are fixedly connected to the side of the tray 1 in a rectangular array. An extension component 3 is fixedly connected to the side of the connecting blocks 2. A moving component 4 is fixedly connected to the end of the extension component 3 away from the connecting blocks 2. The extension component 3 includes a square tube 31 fixedly connected to the connecting blocks 2. A groove is opened on the top surface of the square tube 31 along the length direction. An extension rod 32 is slidably connected inside the square tube 31. A screw 33 passing through the groove is fixedly connected to the top surface of the extension rod 32. A pressing plate 34 that presses against the top surface of the square tube 31 is threaded to the top of the screw 33.

[0025] During operation, the square tube 31 of the extension component 3 is connected to the side of the connecting block 2 by welding. The top surface of the square tube 31 is machined with a straight groove along its length. The extension rod 32 adopts a rectangular rod body that matches the cross-section of the inner cavity of the square tube 31. It is inserted into the inside of the square tube 31 and slides freely along the extension direction of the groove. The top surface of the extension rod 32 is fixed with a screw 33 that penetrates the groove vertically by welding. The top of the screw 33 is threadedly connected to the extrusion plate 34. The extrusion plate 34 is integrally formed by the nut part with internal threads at the bottom and the pressure plate with an enlarged diameter at the top. When the extrusion plate 34 is rotated to press the anti-slip texture at the bottom of the pressure plate against the top surface of the square tube 31, the position of the extension rod 32 inside the square tube 31 is locked by friction.

[0026] Furthermore, the moving component 4 includes a roller 41 fixedly connected to the end of the extension rod 32, a slide rail 42 perpendicular to the extension rod 32 is slidably connected to the side of the roller 41, and a limit plate 43 is fixedly connected to the top of the slide rail 42.

[0027] During operation, roller 41 is fixed to the end of extension rod 32, and its side is slidably connected to slide rail 42 through bearing or sliding groove structure. Slide rail 42 is a vertically set metal plate with its bottom end extending to the same plane as the rolling surface of roller 41. Limiting plate 43 is welded to the top. The lateral width of limiting plate 43 is greater than the plate width of slide rail 42 to form an outward expansion snap-fit ​​structure. During installation, the side of slide rail 42 contacts the side wall of the pit. Roller 41 rolls along slide rail 42 to drive tray 1 to move vertically downward. Limiting plate 43 snaps onto the top edge of pit. The horizontal displacement is constrained by the fit between slide rail 42 and pit side wall. Combined with the rolling guiding function of roller 41, the steel cage is dynamically centered during vertical lowering, avoiding center deviation caused by skewing.

[0028] Furthermore, the inner wall of the square tube 31 of the extension component 3 is adapted to the cross-sectional shape of the extension rod 32. When the extension rod 32 slides back and forth along the length of the square tube 31, the screw 33 moves synchronously in the groove.

[0029] During operation, the inner wall of the square tube 31 and the extension rod 32 adopt a matching rectangular cross-section design. When the extension rod 32 slides, it drives the screw 33 to move synchronously in the slide groove, ensuring structural stability and no skew during the adjustment process, and improving the control accuracy of the extension length.

[0030] Furthermore, the bottom surface of the slide rail 42 of the moving component 4 is coplanar with the rolling surface of the roller 41, and the width of the limiting plate 43 is greater than the width of the slide rail 42.

[0031] During operation, the bottom surface of the slide rail 42 is coplanar with the rolling surface of the roller 41, which minimizes the rolling resistance of the roller 41 when the slide rail 42 contacts the side wall of the pit. At the same time, the widened design of the limiting plate 43 enhances the reliability of the engagement with the top edge of the pit, preventing the slide rail 42 from dislodging.

[0032] Furthermore, the four moving components 4 are respectively connected to the four sides of the tray 1 through the corresponding extension components 3. When the slide rail 42 contacts the side wall of the pit, it forms a vertical limiting movement structure, and the limiting plate 43 abuts against the top edge of the pit.

[0033] During operation, four moving components 4 are symmetrically distributed on the four sides of the tray 1. The slide rail 42 makes multiple contacts with the side wall of the pit to form a vertical guide. Combined with the top edge constraint of the limiting plate 43, the tray 1 is automatically centered in the pit and the force is balanced in four directions, ensuring that the steel cage is lowered vertically without deviation.

[0034] Working principle: During construction, the slide rails 42 of the four moving components 4 are placed on the four sides of the pit. The extension rods 32 of the extension component 3 are manually slid to drive the moving components 4 to expand horizontally until the sides of the slide rails 42 are in close contact with the side walls of the pit. Then, the pressing plate 34 is rotated to press the anti-slip texture of the pressure plate against the top surface of the square tube 31, locking the extension length of the extension rods 32. When hoisting the steel cage, it is placed on the pallet 1. The rollers 41 roll along the slide rails 42 to guide the pallet 1 to be lowered vertically. The contact between the slide rails 42 and the side walls of the pit constrains the horizontal offset. The limiting plate 43 is engaged with the top edge of the pit to prevent the slide rails 42 from dislodging. The symmetrical distribution of the four moving components 4 allows the slide rails 42 to be synchronously limited against the four walls of the pit, ensuring that the center of the pallet 1 coincides with the center of the pit. Finally, the steel cage is dynamically centered during the vertical lowering process, eliminating the risk of center deviation.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centering and positioning device for a cement pole reinforcing cage, characterized in that: Includes a tray (1), on which a connecting block (2) is fixedly connected in a rectangular array on the side of the tray (1), and an extension component (3) is fixedly connected to the side of the connecting block (2), and a moving component (4) is fixedly connected to the end of the extension component (3) away from the connecting block (2). The extension component (3) includes a square tube (31) fixedly connected to the connecting block (2). The top surface of the square tube (31) is provided with a groove along the length direction. An extension rod (32) is slidably connected inside the square tube (31). A screw (33) passing through the groove is fixedly connected to the top surface of the extension rod (32). A pressing plate (34) pressing against the top surface of the square tube (31) is threadedly connected to the top of the screw (33). The moving component (4) includes a roller (41) fixedly connected to the end of the extension rod (32), and a slide rail (42) perpendicular to the extension rod (32) is slidably connected to the side of the roller (41), and a limit plate (43) is fixedly connected to the top of the slide rail (42).

2. The cement pole reinforcement cage centering and positioning device according to claim 1, characterized in that: The inner wall of the square tube (31) of the extension component (3) is adapted to the cross-sectional shape of the extension rod (32). When the extension rod (32) slides back and forth along the length of the square tube (31), the screw (33) moves synchronously in the groove.

3. The cement pole reinforcement cage centering and positioning device according to claim 2, characterized in that: The axis of the screw (33) is perpendicular to the extension direction of the groove, and the lower surface of the extrusion plate (34) forms a locking state on the extension rod (32) when it contacts the top surface of the square tube (31).

4. The cement pole reinforcement cage centering and positioning device according to claim 3, characterized in that: The extrusion plate (34) includes a nut part that is threadedly connected to the screw (33) and a pressure plate. The lower surface of the pressure plate is provided with anti-slip texture that contacts the top surface of the square tube (31).

5. The cement pole reinforcement cage centering and positioning device according to claim 4, characterized in that: The bottom surface of the slide rail (42) of the moving component (4) is coplanar with the rolling surface of the roller (41), and the width of the limiting plate (43) is greater than the width of the slide rail (42).

6. The centering and positioning device for a cement pole reinforcing cage according to claim 5, characterized in that: The four moving components (4) are connected to the four sides of the tray (1) through corresponding extension components (3). When the slide rail (42) contacts the side wall of the pit, it forms a vertical limiting moving structure. The limiting plate (43) abuts against the top edge of the pit.

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