Reducing reinforcement cage with controllable automatic reducing function

Abstract

The utility model relates to the field of reinforcement cages, in particular to a variable-diameter reinforcement cage with a controllable automatic variable-diameter function, which comprises a central tube, a plurality of steel bars which are arranged along the length direction of the central tube and can be expanded outwards are uniformly distributed on the outer circumference of the central tube, and fixed flange plates perpendicular to the central tube are fixedly arranged at two ends of the central tube. The upper portion of the center pipe is sleeved with a movable flange plate which can slide in the length direction of the center pipe and drive the reinforcing steel bars to be unfolded, the reinforcing steel bars are sleeved with multiple layers of steel wire ropes, a guide cap is detachably arranged at the bottom end of the center pipe, and a control mechanism which can stop the movable flange plate from moving is arranged in the center pipe. According to the variable-diameter reinforcement cage with the controllable automatic variable-diameter function, when the reinforcement cage is put into a pile hole, the variable-diameter reinforcement cage can be automatically unfolded, variable diameter of the reinforcement cage is achieved, manual control over unfolding of the reinforcement cage is not needed, and the situation that the variable-diameter reinforcement cage is clamped and cannot be opened, and subsequent grouting operation is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of steel bar cages, in particular to a diameter-changing steel bar cage with a controllable automatic diameter-changing function. Background Art

[0002] Variable diameter steel cage is a specially designed steel cage, mainly used in engineering structures such as foundation pile foundation and underground continuous wall. Its main feature is that the diameter of the steel cage can be changed within a certain range to adapt to different engineering requirements and geological conditions.

[0003] The variable diameter steel cage is controllably deployed actively inside the pile hole, but the restraining mechanism of the variable diameter steel cage may get stuck during use. If the restraining mechanism of the variable diameter steel cage gets stuck during use, it may cause construction delays, steel cage deformation, and reduced project quality. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Utility Model Content

[0004] The purpose of the invention of the utility model is to overcome the defects described in the background technology, thereby realizing a variable diameter steel cage with a controllable automatic diameter changing function. When the steel cage is lowered into the pile hole, the device can automatically expand the variable diameter steel cage to achieve the diameter change of the steel cage without manual control of the expansion, thereby avoiding the situation where the variable diameter steel cage is stuck and cannot be opened, affecting the subsequent grouting operation.

[0005] In order to achieve the above-mentioned invention object, the technical solution of the utility model is: a variable diameter steel cage with a controllable automatic diameter-changing function, including a central tube, which can improve the bearing capacity, stability and drainage performance of the pile. The outer circumference of the central tube is evenly distributed with a plurality of steel bars arranged along its length direction and can be expanded outward, and both ends of the central tube are fixedly provided with fixed flanges perpendicular to the central tube. The upper part of the central tube is provided with a movable flange that can slide along its length direction and drive the steel bars to expand, thereby achieving the diameter change of the steel cage. The steel bars are provided with multiple layers of steel wire rope to increase the bearing capacity and stability of the steel cage. The bottom end of the central tube is detachably provided with a guide cap. The interior of the central tube is provided with a control mechanism that can prevent the movable flange from moving.

[0006] In the above-mentioned variable diameter steel bar cage with controllable automatic diameter changing function, the fixed flange and the movable flange are both provided with placement grooves for placing steel bars, so as to facilitate the arrangement of the tightened steel bars. A power spring is sleeved between the movable flange and the upper fixed flange to provide power for the automatic expansion of the steel bars.

[0007] In the above-mentioned variable diameter steel cage with controllable automatic diameter changing function, the bottom end of the movable flange and the inner circle of the top end of the fixed flange at the bottom are circumferentially hinged with a plurality of connecting rods corresponding to the steel bars, and each of the connecting rods is movably hinged with the corresponding steel bar. When the movable flange moves, the steel bars are expanded or tightened by the connecting rods.

[0008] In the above-mentioned variable diameter steel cage with controllable automatic diameter changing function, the control mechanism includes a through hole that is opened through the center tube below the movable flange, and the through hole is perpendicular to the axial direction of the center tube. Limit pins are slidably arranged inside the through holes on both sides of the center tube, and the top end of the limit pin abuts against the bottom end of the movable flange located at the top. A control rod is slidably arranged in the middle of the center tube, and a pull rod is hingedly arranged at the top end of the control rod, and the pull rod is hingedly arranged with the corresponding end of the limit pin. The lower part of the pull rod passes through the bottom end of the guide cap and a control panel is fixedly arranged at the bottom end of the pull rod. When the steel cage is lowered into the pile hole, the variable diameter steel cage is automatically unfolded to achieve diameter change.

[0009] In the above-mentioned variable diameter steel cage with controllable automatic diameter changing function, the guide cap is a conical structure with upper and lower openings, which is convenient for guiding the steel cage when it is lowered into the pile hole. A detachable baffle is arranged between the guide cap and the control plate to block the movement of the pull rod and realize the limiting of the limit pin.

[0010] In the above-mentioned variable diameter steel cage with controllable automatic diameter changing function, a rolling rod is rotatably arranged on the side wall of the through hole, and the rolling rod abuts against the side of the limit pin, thereby reducing the friction resistance and difficulty of the limit pin when moving in the through hole, and increasing the smoothness of its sliding in the through hole.

[0011] Compared with the prior art, the variable diameter steel cage with controllable automatic diameter changing function of the utility model has at least the following beneficial effects:

[0012] The utility model provides a variable diameter steel cage with a controllable automatic diameter-changing function, comprising a central tube having an upper sleeve provided with a movable flange which can slide along its length direction and drive the steel bars to unfold; the central tube is provided with a control mechanism which can block the movement of the movable flange; when the steel cage is lowered into the pile hole, the variable diameter steel cage can be automatically unfolded to achieve the diameter change of the steel cage without manual control of the unfolding, thereby avoiding the situation where the variable diameter steel cage is stuck and cannot be opened, thereby affecting the subsequent grouting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a variable diameter steel cage with a controllable automatic diameter changing function of the utility model;

[0014] Figure 2It is a schematic diagram of the position of the control mechanism of the variable diameter steel cage with controllable automatic diameter changing function of the utility model;

[0015] Figure 3 The utility model is a schematic diagram of the control mechanism structure of the variable diameter steel cage with controllable automatic diameter changing function.

[0016] In the figure: 1. center tube; 2. steel bar; 3. fixed flange; 4. movable flange; 5. wire rope; 6. guide cap;

[0017] 7. Control mechanism; 71. Through hole; 72. Limit pin; 73. Control rod; 74. Pull rod; 75. Control panel;

[0018] 8. Mounting groove; 9. Power spring; 10. Connecting rod; 11. Baffle; 12. Rolling rod. DETAILED DESCRIPTION

[0019] The variable diameter steel cage with controllable automatic diameter changing function of the utility model is described in more detail below with reference to the accompanying drawings and through specific implementation methods.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] See also Figure 1-Figure 3 The variable diameter steel cage with controllable automatic diameter-changing function of this embodiment can automatically expand the variable diameter steel cage when the steel cage is lowered into the pile hole to achieve the diameter change of the steel cage, without manual control of the expansion, to avoid the situation that the variable diameter steel cage is stuck and cannot be opened, affecting the subsequent grouting operation; in this embodiment, it mainly includes a central tube 1, through which the bearing capacity, stability and drainage performance of the pile can be improved. The outer circumference of the central tube 1 is evenly distributed with a plurality of steel bars 2 arranged along its length direction and can be expanded outward, and the steel bars 2 are sleeved with multiple layers of steel wire ropes 5. When the steel cage is expanded, the steel wire ropes are passed to increase the bearing capacity and stability of the steel cage. The bottom end of the central tube 1 is detachably provided with a guide cap 6. The guide cap 6 is a conical structure designed with upper and lower openings. The guide cap 6 is convenient for guiding when the steel cage is lowered into the pile hole.

[0022] To achieve the expansion of the reinforcement cage. Figure 1 and Figure 2In this embodiment, both ends of the central tube 1 are fixedly provided with fixed flanges 3 perpendicular to the central tube 1. The upper part of the central tube 1 is provided with a movable flange 4 that can slide along its length direction and drive the steel bar 2 to unfold. The fixed flange 3 and the movable flange 4 are both provided with placement grooves 8 for placing the steel bar 2, which is convenient for arranging the tightened steel bar 2. A power spring 9 is provided between the movable flange 4 and the upper fixed flange 3 to provide power for the automatic expansion of the steel bar 2. The bottom end of the movable flange 4 and the inner circle of the top of the lower fixed flange 3 are circumferentially hinged with a plurality of connecting rods 10 corresponding to the steel bar 2, and each of the connecting rods 10 is movably hinged with the corresponding steel bar 2. When the movable flange 4 moves, the steel bar 2 is expanded or tightened by the connecting rods 10.

[0023] When the steel cage is tightened, the steel bar 2 is in the placement groove 8, and the movable flange 4 overcomes the resistance of the power spring 9 and approaches the fixed flange 3, so as to facilitate transportation. When the steel cage is unfolded, the power spring 9 pushes the movable flange 4 on the central tube 1 to a position away from the fixed flange 3. At this time, the movable flange 4 unfolds the corresponding steel bar 2 outward through the connecting rod 10 during the downward movement until the steel wire rope 5 is completely stretched out.

[0024] In order to drive the steel cage to expand. In this embodiment, see Figure 1-Figure 3 , a control mechanism 7 capable of blocking the movement of the movable flange 4 is arranged inside the central tube 1. The control mechanism 7 includes a through hole 71 penetrating the central tube 1 below the movable flange 4, and the through hole 71 is perpendicular to the axial direction of the central tube 1. Limiting pins 72 are slidably arranged inside the through holes 71 on both sides of the central tube 1, and the top of the limiting pin 72 abuts against the bottom end of the movable flange 4 located at the top. A roller 12 is rotatably arranged on the side wall of the through hole 71, and the roller 12 abuts against the side of the limiting pin 72. The friction resistance and difficulty of the limiting pin 72 when moving in the through hole 71 are reduced, and the smoothness of its sliding in the through hole 71 is increased.

[0025] A control rod 73 is slidably provided in the middle of the central tube 1, and a pull rod 74 is hingedly provided at the top end of the control rod 73, and the pull rod 74 is hingedly provided with the corresponding end of the limit pin 72. The lower part of the pull rod 74 passes through the bottom end of the guide cap 6, and a control plate 75 is fixedly provided at the bottom end of the pull rod 74. A detachable baffle 11 is provided between the guide cap 6 and the control plate 75, which can block the movement of the pull rod 74 and realize the limit of the limit pin 72.

[0026] Before the steel cage is lowered into the pile hole, the limit pin 72 is inside the through hole 71, and the control plate is blocked from moving by the baffle 11. The limit pin 72 blocks the movable flange 4 from moving, and tightens the steel cage. When it is necessary to lower the pile hole, the baffle 11 is removed first, and the steel cage is lowered into the pile hole until the control plate is completely in contact with the ground at the bottom of the pile hole. At this time, the gravity of the steel cage above continues to press down the control plate, and the control plate moves upward along the central tube 1, so that the limit pin 72 is pulled from the through hole 71 into the central tube 1 through the pull rod 74, and the limit on the movable flange 4 is released. In this process, the friction force is reduced by the rolling rod 12. At this time, the movable flange 4 moves downward along the central tube 1 under the action of the power spring 9, thereby realizing the automatic expansion of the steel cage. Then the steel cage is lifted up a certain distance, and the steel cage is away from the ground, so as to facilitate the subsequent casting and molding.

[0027] The method of using the variable diameter steel cage with controllable automatic diameter changing function of the utility model is as follows: first, when the steel cage is tightened, the steel bar 2 is in the placement groove 8. At this time, the movable flange 4 overcomes the resistance of the power spring 9 under the action of the limit pin 72 and approaches the fixed flange 3. At the same time, the baffle 11 blocks the movement of the control plate, thereby facilitating transportation.

[0028] When it is necessary to drill a pile hole, the baffle 11 is first removed, and the steel cage is lowered into the pile hole until the control plate is completely in contact with the ground at the bottom of the pile hole. In this process, the guide cap 6 is used to facilitate the guidance of the steel cage when it is lowered into the pile hole. At this time, the control plate is continuously pressed down by the gravity of the steel cage above, and the control plate moves upward along the central tube 1, so that the limit pin 72 is pulled into the central tube 1 from the through hole 71 through the pull rod 74, and the limit on the movable flange 4 is released. In this process, the friction force is reduced by the rolling rod 12. At this time, the movable flange 4 moves downward along the central tube 1 under the action of the power spring 9, and the corresponding steel bars 2 are unfolded outward through the connecting rod 10 until the steel wire rope 5 is completely stretched to increase the bearing capacity and stability of the steel cage. Thereby, the automatic unfolding of the steel cage is realized. Then the steel cage is lifted upward by a certain distance, and the steel cage is away from the ground, so as to facilitate the subsequent casting and molding. Thereby, the variable diameter steel cage is automatically unfolded to realize the diameter change of the steel cage without the need for manual control of the unfolding, thereby avoiding the situation where the variable diameter steel cage is stuck and cannot be opened, thus affecting the subsequent grouting operation.

[0029] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0030] The exemplary implementation of the present invention is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A variable diameter steel cage with controllable automatic diameter changing function, characterized in that: The invention comprises a central tube (1), wherein a plurality of steel bars (2) are evenly distributed on the outer circumference of the central tube (1) and are arranged along the length direction thereof and can be expanded outwards, and fixed flanges (3) perpendicular to the central tube (1) are fixedly arranged at both ends of the central tube (1), and a movable flange (4) which can slide along the length direction thereof and drive the steel bars (2) to expand is sleeved on the upper part of the central tube (1), and multiple layers of steel wire ropes (5) are sleeved on the steel bars (2), and a guide cap (6) is detachably arranged at the bottom end of the central tube (1), and a control mechanism (7) which can block the movement of the movable flange (4) is arranged inside the central tube (1).

2. The variable diameter steel cage with controllable automatic diameter changing function according to claim 1 is characterized in that: The fixed flange (3) and the movable flange (4) are both provided with a placement groove (8) for placing the steel bar (2), and a power spring (9) is sleeved between the movable flange (4) and the upper fixed flange (3).

3. The variable diameter steel cage with controllable automatic diameter changing function according to claim 1 is characterized in that: The bottom end of the movable flange (4) and the inner circle of the top end of the lower fixed flange (3) are both circumferentially hinged with a plurality of connecting rods (10) corresponding to the steel bars (2), and each of the connecting rods (10) is movably hinged with the corresponding steel bar (2).

4. The variable diameter steel cage with controllable automatic diameter changing function according to claim 1 is characterized in that: The control mechanism (7) includes a through hole (71) that is opened through the center tube (1) below the movable flange (4), and the through hole (71) is perpendicular to the axial direction of the center tube (1). Limit pins (72) are slidably arranged inside the through holes (71) on both sides of the center tube (1), and the top end of the limit pin (72) abuts against the bottom end of the movable flange (4) located at the top. A control rod (73) is slidably arranged in the middle of the center tube (1), and a pull rod (74) is hingedly arranged at the top end of the control rod (73). The pull rod (74) is hingedly arranged with the corresponding end of the limit pin (72), and the lower part of the pull rod (74) passes through the bottom end of the guide cap (6) and a control panel (75) is fixedly arranged at the bottom end of the pull rod (74).

5. The variable diameter steel cage with controllable automatic diameter changing function according to claim 4 is characterized in that: The guide cap (6) is a conical structure with upper and lower openings, and a detachable baffle (11) is provided between the guide cap (6) and the control panel (75).

6. The variable diameter steel cage with controllable automatic diameter changing function according to claim 4 is characterized in that: A rolling rod (12) is rotatably arranged on the side wall of the through hole (71), and the rolling rod (12) abuts against the side of the limiting pin (72).

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