Cast-in-situ bored pile top elevation control device

Abstract

The utility model discloses a cast-in-situ bored pile top elevation control device, which belongs to the technical field of cast-in-situ bored pile top elevation control and is characterized in that a pile top elevation control device body comprises a pile casing, the upper end edge of the pile casing is connected with a positioning assembly in a clamping manner, the positioning assembly comprises a clamping plate, and the top of the clamping plate is fixedly connected with an adjusting sleeve; according to the cast-in-situ bored pile top elevation control device, through the arrangement of the supporting arm and the guide cylinder, the horizontal position of the floating rod can be adjusted according to actual needs, the friction resistance between balls in the guide cylinder and the floating rod can be greatly reduced, and the height of the floating rod can be adjusted; the vertical moving stability of the floating rod is improved, the floating rod can directly float on the surface of slurry through the arranged conical floating block and the arranged floating rod, meanwhile, the position of the limiting sleeve is rapidly and accurately adjusted according to the actual preset elevation, and then a user can conveniently and visually see the concrete pouring position.

Description

Technical Field

[0001] This utility model relates to the field of pile top elevation control technology for bored cast-in-place piles, and more specifically, to a pile top elevation control device for bored cast-in-place piles. Background Technology

[0002] Drilled piles are a common type of foundation in municipal and building construction. During the construction of drilled piles, a pile top elevation control device is needed to control the concrete pouring position, thereby controlling the position of the pile top.

[0003] Currently, commonly used pile top elevation control devices are inconvenient to adjust the position of the float during actual use, and may cause jamming due to high frictional resistance when moving up and down. For example, a device for controlling the grouting elevation of the top of a bored cast-in-place pile disclosed in CN215593980U includes a casing, inside which a bracket is provided; a limiting ring installed at the bottom end of the bracket; a connecting rod located inside the limiting ring; and a counterweight frame placed below the connecting rod.

[0004] As can be seen from the above-mentioned publicly available scheme, when using the float, the weight of the counterweight frame needs to be adjusted according to the mud density and the depth of the float sinking into the mud. At the same time, the position of the bracket is fixed, and the horizontal position of the float cannot be adjusted, thus making it impossible to adjust the distance between the float and the inner wall of the casing, which causes inconvenience to the user. Moreover, when the connecting rod moves up and down, the frictional resistance with the limit ring and the inner wall of the bracket is large, which may cause the connecting rod to move up and down unevenly, thus causing the connecting rod to get stuck, affecting the user's judgment of the concrete pouring position, and thus affecting the control of the pile top elevation. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a drilling pile top elevation control device. This drilling pile top elevation control device, through the setting of support arms and guide cylinders, can not only adjust the horizontal position of the float rod according to actual needs, but also the ball bearings in the guide cylinder can greatly reduce the frictional resistance with the float rod, improve the vertical movement stability of the float rod, and through the setting of conical float blocks and float rods, it can float directly on the mud surface. At the same time, according to the actual predetermined elevation, the position of the limit sleeve can be quickly and accurately adjusted, so that the user can intuitively see the concrete pouring position.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A bored pile top elevation control device includes a pile top elevation control device body, which includes a casing. A positioning component is engaged with the upper edge of the casing. The positioning component includes a clamping plate, and an adjusting sleeve is fixedly connected to the top of the clamping plate. A support component is slidably connected to one end of the adjusting sleeve, and an elevation control component is movably connected to one end of the support component. The elevation control component includes a float rod, and a float block is detachably connected to one end of the float rod. This bored pile top elevation control device, through the support arm and guide tube, can not only adjust the horizontal position of the float rod according to actual needs, but also the ball bearings inside the guide tube can greatly reduce the frictional resistance with the float rod, improving the stability of the float rod's vertical movement. Furthermore, the conical float block and float rod allow it to float directly on the mud surface. Simultaneously, the position of the limiting sleeve can be quickly and accurately adjusted according to the actual predetermined elevation, thus allowing the user to intuitively see the concrete pouring position.

[0008] Furthermore, the support assembly includes a support arm, one end of which is threadedly connected to a first manual screw, and an anti-detachment plate is movably sleeved on the surface of the first manual screw. One end of the support arm is fixedly connected to a guide cylinder, and the outer diameter of the anti-detachment plate is larger than the inner diameter of the adjustment hole to prevent the support arm from detaching from the adjustment sleeve.

[0009] Furthermore, one end of the adjusting sleeve has an adjusting hole, the inner wall of the adjusting hole is slidably connected to the surface of the support arm, the surface of the support arm has a fixing hole, and the inner wall of the fixing hole is threaded with a second manual screw, so that the support arm can be quickly fixed in its horizontal adjustment position by the second manual screw.

[0010] Furthermore, one end of the float is threaded with an anti-detachment cap, a limit sleeve is slidably connected to the surface of the float, and a flat surface is opened on the surface of the float. The flat surface is provided with scale lines, which allow the user to adjust the position of the limit sleeve on the surface of the float according to actual needs, thereby controlling the pile top elevation.

[0011] Furthermore, one end of the guide cylinder has an axially penetrating guide groove, and the inner wall of the guide groove is provided with annularly distributed balls. The surface of the balls rolls in connection with the surface of the float rod, and a gap is left between the surface of the float rod and the guide groove. The balls not only reduce frictional resistance, but also prevent dust adhering to the surface of the float rod from contacting the inner wall of the guide groove.

[0012] Furthermore, the clamping plate is made of elastic stainless steel, and one end of the clamping plate has a clamping groove with an arc-shaped opening at one end. The inner wall of the clamping groove is clamped to the inner and outer surfaces of the protective cylinder by elastic force, which facilitates the quick disassembly and assembly of the elevation control device and the protective cylinder.

[0013] Furthermore, the float is conical in shape, hollow inside, and is a hollow plastic ball. The conical surface is smooth and does not attract dust, allowing the float to always float on the surface of the mud.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) This scheme, through the support arm and guide tube, can not only adjust the horizontal position of the float according to actual needs, but also the ball bearings in the guide tube can greatly reduce the frictional resistance with the float and improve the stability of the float's up and down movement.

[0016] (2) This solution uses a conical float and a float rod to allow it to float directly on the surface of the mud. At the same time, the position of the limiting sleeve can be quickly and accurately adjusted according to the actual predetermined elevation, so that users can see the concrete pouring position intuitively. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the elevation control component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the support component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning component structure of this utility model;

[0021] Figure 5 for Figure 3 A schematic diagram of the anti-detachment plate structure.

[0022] Explanation of the labels in the diagram:

[0023] 1. Pile top elevation control device body; 2. Casing; 3. Elevation control component; 31. Floating rod; 32. Plane; 33. Scale line; 34. Anti-detachment cap; 35. Limiting sleeve; 36. Floating block; 4. Support component; 41. Support arm; 42. Fixing hole; 43. Anti-detachment plate; 44. First manual screw; 45. Guide cylinder; 46. Guide groove; 47. Ball bearing; 5. Positioning component; 51. Clamping plate; 52. Clamping groove; 53. Arc-shaped opening; 54. Adjusting sleeve; 55. Adjusting hole; 56. Second manual screw. Detailed Implementation

[0024] 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 protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1-5 A drilled pile top elevation control device includes a pile top elevation control device body 1, which includes a casing 2. The casing 2 is a steel cylinder, which is existing technology. A positioning component 5 is snapped onto the upper edge of the casing 2. The positioning component 5 includes a clamping plate 51. The clamping groove 52 of the clamping plate 51 has an opening smaller than the wall thickness of the casing 2, which can quickly clamp the casing 2. An adjusting sleeve 54 is fixedly connected to the top of the clamping plate 51. A support component 4 is slidably connected to one end of the adjusting sleeve 54. The support component 4 includes a support arm 41. A first manual screw 44 is threaded to one end of the support arm 41. An anti-detachment plate 43 is movably sleeved on the surface of the first manual screw 44. A guide tube 45 is fixedly connected to one end of the support arm 41. The outer diameter of the anti-detachment plate 43 is large. To prevent the support arm 41 from detaching from the adjustment sleeve 54, the inner diameter of the adjustment hole 55 is adjusted. One end of the support assembly 4 is movably connected to the elevation control assembly 3. The elevation control assembly 3 includes a float 31. One end of the float 31 is threadedly connected to an anti-detachment cap 34. A limit sleeve 35 is slidably connected to the surface of the float 31. The limit sleeve 35 is composed of two semi-circular rings. A bolt is threadedly connected to the surface of the limit sleeve 35. The bolt locks and positions the limit sleeve 35 and the float 31. A flat surface 32 is opened on the surface of the float 31. A scale line 33 is set on the surface of the flat surface 32. The scale line 33 allows the user to adjust the position of the limit sleeve 35 on the surface of the float 31 according to actual needs, thereby controlling the elevation of the pile top. A float block 36 is detachably connected to one end of the float 31.

[0027] One end of the adjusting sleeve 54 has an adjusting hole 55. The inner wall of the adjusting hole 55 is slidably connected to the surface of the support arm 41. The surface of the support arm 41 has a fixing hole 42. The fixing hole 42 is a threaded hole with equal spacing. The inner wall of the fixing hole 42 is threaded with a second manual screw 56. The support arm 41 can be quickly fixed in its horizontal adjustment position by the second manual screw 56. One end of the guide cylinder 45 has an axially penetrating guide groove 46. The inner wall of the guide groove 46 is provided with annularly distributed balls 47. The surface of the balls 47 is in rolling contact with the surface of the float 31. There is a gap between the surface of the float 31 and the guide groove 46. The balls 47 can not only reduce frictional resistance, but also prevent the dust adhering to the surface of the float 31 from contacting the inner wall of the guide groove 46.

[0028] The clamping plate 51 is made of elastic stainless steel. One end of the clamping plate 51 has a clamping groove 52, and one end of the clamping groove 52 has an arc-shaped opening 53. The size of the arc-shaped opening 53 is larger than the wall thickness of the casing 2, so that the casing 2 can easily enter the clamping groove 52 upwards. The inner wall of the clamping groove 52 and the inner and outer surfaces of the casing 2 are clamped together by elastic force, which facilitates the quick separation and assembly of the elevation control device and the casing 2. The float 36 is conical in shape and hollow inside. The float 36 is a hollow plastic ball, and the conical surface is smooth and does not stick to dust, so that the float 36 can always float on the surface of the mud.

[0029] When using the drilled pile top elevation control device, first grasp the adjusting sleeve 54 by hand, then move the clamping plate 51 downwards. The clamping plate 51 moves upwards, causing the casing 2 to be inserted into the clamping groove 52 and squeezed. This allows the clamping plate 51 to clamp the casing 2 wall for positioning through elastic force. Next, insert one end of the support arm 41 into the adjusting hole 55 from left to right, with its right end protruding from the adjusting hole 55. Then, fasten the anti-detachment plate 43 to the right end of the support arm 41 using the first manual screw 44. Then, move the position of the limiting sleeve 35 according to the actual pile top elevation, and quickly move it to the adjustment position using the scale line 33. Finally, tighten the limiting sleeve 35 with bolts. 5. Next, push the upper end of the float rod 31 upward through the guide groove 46 from bottom to top. Then, manually fix the anti-detachment cap 34 to the upper end of the float rod 31 clockwise. Then, move the support arm 41 horizontally according to actual needs to adjust the distance between the float block 36 and the inner wall of the casing 2. After the adjustment is completed, lock the support arm 41 and the adjusting sleeve 54 with the second manual screw 56. Then, during the concrete pouring process, the float block 36 moves upward due to the surging of mud. The upward movement of the float block 36 drives the float rod 31 to move upward. The upward movement of the float rod 31 drives the limiting sleeve 35 to move upward. When the limiting sleeve 35 moves upward and contacts the bottom of the guide cylinder 45, stop the concrete pouring.

[0030] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A pile top elevation control device for bored cast-in-place piles, comprising a pile top elevation control device body (1), wherein the pile top elevation control device body (1) includes a casing (2), characterized in that: The upper edge of the protective sleeve (2) is fitted with a positioning component (5). The positioning component (5) includes a clamping plate (51). An adjusting sleeve (54) is fixedly connected to the top of the clamping plate (51). A support component (4) is slidably connected to one end of the adjusting sleeve (54). An elevation control component (3) is movably connected to one end of the support component (4). The elevation control component (3) includes a float (31). A float block (36) is detachably connected to one end of the float (31).

2. The bored pile top elevation control device according to claim 1, characterized in that: The support assembly (4) includes a support arm (41), one end of which is threadedly connected to a first manual screw (44), and an anti-detachment plate (43) is movably sleeved on the surface of the first manual screw (44). One end of the support arm (41) is fixedly connected to a guide cylinder (45).

3. The bored pile top elevation control device according to claim 1, characterized in that: One end of the adjusting sleeve (54) has an adjusting hole (55), the inner wall of the adjusting hole (55) is slidably connected to the surface of the support arm (41), the surface of the support arm (41) has a fixing hole (42), and the inner wall of the fixing hole (42) is threadedly connected to a second manual screw (56).

4. The bored pile top elevation control device according to claim 1, characterized in that: One end of the float (31) is threaded with an anti-detachment cap (34), and the surface of the float (31) is slidably connected with a limit sleeve (35). The surface of the float (31) has a flat surface (32), and the surface of the flat surface (32) is provided with scale lines (33).

5. The bored pile top elevation control device according to claim 2, characterized in that: One end of the guide cylinder (45) has an axially penetrating guide groove (46), and the inner wall of the guide groove (46) is provided with annularly distributed balls (47), and the surface of the balls (47) is in rolling connection with the surface of the float (31).

6. The bored pile top elevation control device according to claim 1, characterized in that: The clamping plate (51) is made of elastic stainless steel. One end of the clamping plate (51) has a clamping groove (52), and one end of the clamping groove (52) has an arc-shaped opening (53).

7. The bored pile top elevation control device according to claim 1, characterized in that: The float (36) is conical in shape and hollow inside.

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