Position fixing device for rotary excavating hole-forming cast-in-place pile casing

Abstract

The utility model discloses a rotary excavating hole-forming cast-in-place pile casing position fixing device, and relates to the field of constructional engineering devices, the rotary excavating hole-forming cast-in-place pile casing position fixing device comprises a steel casing, a first fixing plate is installed on the outer wall of the steel casing, a threaded rod is movably connected in the first fixing plate, a first gasket is movably connected to the outer wall of the threaded rod, and a second gasket is movably connected to the outer wall of the first gasket. The outer wall of the threaded rod is movably connected with a first nut, the outer wall of the threaded rod is movably connected with a second fixing plate, the first fixing plate is placed on the ground and attached to the outer wall of the steel casing, the threaded rod penetrates through the first fixing plate, and then the second fixing plate is attached to the outer wall of the steel casing. The first nut and the second nut are in butt joint with the two ends of the threaded rod correspondingly and rotate, the first nut and the second nut can extrude the first gasket and the second gasket correspondingly, the first fixing plate and the second fixing plate are tightened and clamp the steel casing, and the effect of conveniently limiting and fixing the steel casings with different diameters is achieved.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering devices, in particular to a fixing device for the position of a rotary drilling cast-in-place pile casing. Background Technique

[0002] Foundation and basic engineering is the most important sub-project in the construction field. With the increasing requirements for building foundations, the application of pile foundations is more extensive. According to different construction methods, pile foundations are divided into: cast-in-place piles, precast piles, mixing piles, manual dug piles, etc. A rotary drilling cast-in-place pile is a form of pile foundation formed by drilling a hole through a rotary drilling rig and then pouring concrete. During the construction process, using a casing can effectively prevent the occurrence of hole collapse. At present, the structure of the fixing device for the position of the rotary drilling cast-in-place pile casing is relatively simple, and holes need to be drilled on the casing to install the fixing device, resulting in poor convenience of use. Therefore, a fixing device for the position of the rotary drilling cast-in-place pile casing is needed.

[0003] A patent document with the prior art publication number CN220377264U provides a fixing device for the position of a rotary drilling cast-in-place pile casing, including a steel casing and a steel casing fixing device. Among them, four groups of steel casing fixing devices are provided, which are respectively arranged around the top of the steel casing, and the four groups of steel casing fixing devices are equally angularly distributed around the axis of the steel casing. The steel casing fixing device includes equal-angle steel and steel plates. Among them, two equal-angle steels are provided, and the adjacent ends of the two equal-angle steels are vertically arranged and welded together. The two sides of the middle parts of the two equal-angle steels are respectively welded to the steel plates. The above structure reduces the occurrence of situations such as the offset and inclination of the steel casing during the pile-forming process of the rotary drilling cast-in-place pile, improves the construction quality, pile-forming accuracy, and construction efficiency of the cast-in-place pile. However, when the technology of CN220377264U is operated, it is necessary to install the fixing device on the casing through bolts, the operation is relatively complex, and the applicability of the casing fixing device is reduced, and the stability of the casing fixing device during use is poor. Therefore, a fixing device for the position of the rotary drilling cast-in-place pile casing is urgently needed. Content of the Utility Model

[0004] Based on this, the purpose of the present utility model is to provide a fixing device for the position of a rotary drilling cast-in-place pile casing to solve the problems of low applicability and poor stability of the existing fixing device for the position of the rotary drilling cast-in-place pile casing.

[0005] To achieve the above object, the present utility model provides the following technical solution: A fixing device for the position of a rotary drilled cast-in-place pile casing, including a steel casing, wherein a first fixing plate is installed on the outer wall of the steel casing, a threaded rod is movably connected inside the first fixing plate, a first gasket is movably connected to the outer wall of the threaded rod, a first nut is movably connected to the outer wall of the threaded rod, a second fixing plate is movably connected to the outer wall of the threaded rod, a second gasket is movably connected to the outer wall of the threaded rod, and a second nut is movably connected to the outer wall of the threaded rod.

[0006] The outer wall of the first fixing plate is fixedly connected with a support plate, a limiting nail is movably connected inside the support plate, and anti-slip threads are provided inside the limiting nail.

[0007] Preferably, the first fixing plate and the threaded rod form a sliding structure, and the second fixing plate and the threaded rod form a sliding structure.

[0008] Preferably, both the first gasket and the second gasket are sleeved on the outer wall of the threaded rod, and both the first fixing plate and the second fixing plate are of an open-hole design.

[0009] Preferably, the threaded rod is threadedly connected with the first nut, and the threaded rod is threadedly connected with the second nut.

[0010] Preferably, the support plate is of an open-hole design, and the central axes of the support plate and the first fixing plate are symmetrically arranged.

[0011] Preferably, the support plate and the limiting nail form a sliding structure, and the bottom of the limiting nail is tapered.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. By providing the steel casing, the first fixing plate, the threaded rod, the first gasket, the first nut, the second fixing plate, the second gasket and the second nut, placing the first fixing plate on the ground and attaching it to the outer wall of the steel casing, passing the threaded rod through the first fixing plate, then attaching the second fixing plate to the outer wall of the steel casing, sleeving the first gasket and the second gasket on the outer wall of the threaded rod respectively, and butting and rotating the first nut and the second nut to the two ends of the threaded rod respectively, the first nut and the second nut can respectively squeeze the first gasket and the second gasket, so that the first fixing plate and the second fixing plate are tightened to clamp the steel casing, achieving the effect of facilitating the limit fixation of steel casings with different diameters, thereby improving the applicability of the casing position fixing device, and there is no need to drill holes in the casing, which improves the assembly efficiency;

[0014] 2. By providing a support plate, a limiting nail and anti-slip lines, the utility model can drive the limiting nail to insert into the soil by hammering the top of the limiting nail after passing the limiting nail through the support plate. Under the action of the anti-slip lines, the limiting nail can be made more stable, achieving the effect of facilitating the improvement of the use stability of the fixing device for the position of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 is a three-dimensional drawing of the steel casing of the utility model;

[0017] Figure 3 is a schematic diagram of the disassembled structure of the utility model;

[0018] Figure 4 is a three-dimensional drawing of the limiting nail of the utility model.

[0019] In the figure: 1. Steel casing; 2. First fixing plate; 3. Threaded rod; 4. First gasket; 5. First nut; 6. Second fixing plate; 7. Second gasket; 8. Second nut; 9. Support plate; 10. Limiting nail; 11. Anti-slip lines. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0021] The embodiments of the present utility model will be described below according to its overall structure.

[0022] Please refer to Figures 1-4 , a fixing device for the position of the casing of a rotary drilling cast-in-place pile, including a steel casing 1. A first fixing plate 2 is installed on the outer wall of the steel casing 1. A threaded rod 3 is movably connected inside the first fixing plate 2. A first gasket 4 is movably connected to the outer wall of the threaded rod 3. A first nut 5 is movably connected to the outer wall of the threaded rod 3. A second fixing plate 6 is movably connected to the outer wall of the threaded rod 3. A second gasket 7 is movably connected to the outer wall of the threaded rod 3. A second nut 8 is movably connected to the outer wall of the threaded rod 3. The first fixing plate 2 and the threaded rod 3 form a sliding structure, and the second fixing plate 6 and the threaded rod 3 form a sliding structure. Both the first gasket 4 and the second gasket 7 are sleeved on the outer wall of the threaded rod 3, and both the first fixing plate 2 and the second fixing plate 6 are of an open-hole design. The threaded rod 3 is threadedly connected to the first nut 5, and the threaded rod 3 is threadedly connected to the second nut 8, which can facilitate the limit fixation of steel casings 1 with different diameters and improve the applicability of the fixing device for the position of the casing.

[0023] Please refer toFigures 1-4 A device for fixing the casing position of a rotary bored cast-in-place pile, wherein the outer wall of a first fixed plate 2 is fixedly connected to a support plate 9, and a limit pin 10 is movably connected inside the support plate 9, and an anti-slip pattern 11 is provided inside the limit pin 10. The support plate 9 is an open-hole design, and the support plate 9 and the central axis of the first fixed plate 2 are symmetrically arranged, the support plate 9 and the limit pin 10 constitute a sliding structure, and the bottom of the limit pin 10 is a conical arrangement, which can improve the stability of the casing position fixing device when used.

[0024] Working principle: When in use, place the first fixing plate 2 on the ground and stick it to the outer wall of the steel casing 1, pass the threaded rod 3 through the first fixing plate 2, then stick the second fixing plate 6 to the outer wall of the steel casing 1, and pass the threaded rod 3 through the second fixing plate 6, respectively sleeve the first gasket 4 and the second gasket 7 on the outer wall of the threaded rod 3, and respectively connect the first nut 5 and the second nut 8 to the two ends of the threaded rod 3 and rotate. Since the threaded rod 3 is threadedly connected to the first nut 5, and the threaded rod 3 is threadedly connected to the second nut 8, the first nut 5 and the second nut 8 can be respectively connected to the first gasket 4 and the second gasket The sheet 7 is squeezed so that the first fixing plate 2 and the second fixing plate 6 are tightened and clamp the steel casing 1, which facilitates the limit fixation of steel casings 1 with different diameters. By passing the limit nail 10 through the support plate 9 and hammering the top of the limit nail 10, the limit nail 10 can be driven to be inserted into the soil. Under the action of the anti-slip groove 11, the limit nail 10 can be made more stable, which facilitates the use stability of the casing position fixing device. In this way, the use process of the device is completed. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device for the position of the casing of a bored cast-in-place pile by rotary drilling, comprising a steel casing (1), characterized in that: A first fixing plate (2) is installed on the outer wall of the steel casing (1). A threaded rod (3) is movably connected inside the first fixing plate (2). A first gasket (4) is movably connected to the outer wall of the threaded rod (3). A first nut (5) is movably connected to the outer wall of the threaded rod (3). A second fixing plate (6) is movably connected to the outer wall of the threaded rod (3). A second gasket (7) is movably connected to the outer wall of the threaded rod (3). A second nut (8) is movably connected to the outer wall of the threaded rod (3). A support plate (9) is fixedly connected to the outer wall of the first fixing plate (2). A limit pin (10) is movably connected inside the support plate (9). Anti-slip threads (11) are provided inside the limit pin (10).

2. The position fixing device for the casing of a bored cast-in-place pile by rotary drilling according to claim 1, characterized in that: The first fixing plate (2) and the threaded rod (3) form a sliding structure, and the second fixing plate (6) and the threaded rod (3) form a sliding structure.

3. A fixing device for the position of a casing of a bored cast-in-place pile by rotary drilling, characterized in that: Both the first gasket (4) and the second gasket (7) are sleeved on the outer wall of the threaded rod (3), and both the first fixing plate (2) and the second fixing plate (6) are of an open-hole design.

4. A fixing device for the position of the casing of a bored cast-in-place pile by rotary drilling, characterized in that: The threaded rod (3) is threadedly connected to the first nut (5), and the threaded rod (3) is threadedly connected to the second nut (8).

5. The position fixing device for the casing of a rotary drilled cast-in-place pile according to claim 1, characterized in that: The support plate (9) is of an open-hole design, and the central axes of the support plate (9) and the first fixing plate (2) are symmetrically arranged.

6. The position fixing device for the casing of a bored cast-in-place pile by rotary drilling according to claim 5, characterized in that: The support plate (9) and the limit pin (10) form a sliding structure, and the bottom of the limit pin (10) is conical.

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