Sand cylinder structure

Abstract

The utility model relates to a sand cylinder structure which comprises an upper steel plate and a lower steel plate, the upper steel pipe is fixed below the upper steel plate; the filling concrete is filled in the upper steel pipe; the lower steel pipe sleeves the upper steel pipe, a gap is reserved between the inner wall of the lower steel pipe and the outer wall of the upper steel pipe, and the bottom of the lower steel pipe is provided with a sand unloading hole and welded with a nut; the lower steel plate is fixed on the bottom surface of the lower steel pipe; the lower steel pipe is filled with the filling sand, and the filling sand is pressed by the filling concrete; the axis cylinder is pre-buried in the filling concrete, is positioned on the axis of the upper steel pipe and is fixed on the bottom surface of the upper steel plate; the axis rod is in sliding fit with the axis cylinder, located on the axis line of the lower steel pipe and fixed to the upper face of the lower steel plate; and the bolt is in threaded connection with the nut and extends into the sand unloading hole to form blockage. Coaxial and concentric falling of the sand cylinder is facilitated, and inclination of the upper portion of the sand cylinder is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bridge temporary support, especially a sand cylinder structure. BACKGROUND

[0002] Sand cylinders can be used as temporary supports, which are usually cylindrical in shape, with sand placed inside, and the outflow of sand is controlled by opening an opening on the side, so that the girder can be safely placed on the permanent support. For example, the Chinese utility model publication No. CN 215405615 U discloses a structure, a sand cylinder, a sand unloading device, a support bottom plate and sand. The upper structure of the sand cylinder is composed of a support top plate and a sand cylinder inner core. The sand cylinder inner core is vertically inserted into the inside of the sand cylinder and is supported by the sand inside the sand cylinder. The sand unloading device is symmetrically arranged through the sand outlet hole of the sand cylinder. By rotating the sand unloading device, the sand uniformly flows out of the sand outlet hole and onto the support bottom plate located at the bottom of the self-unloading sand cylinder temporary support, thereby achieving sand unloading and forming an integrated self-unloading sand cylinder temporary support. However, it is not convenient for the upper part of the sand cylinder to fall coaxially or concentrically, the upper part of the sand cylinder is offset, which easily leads to uneven stress on the sand particles, thereby causing the upper part of the sand cylinder to tilt. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a sand cylinder structure that facilitates the sand cylinder to maintain coaxial and concentric falling and prevents the upper part of the sand cylinder from tilting.

[0004] To solve the above problems, a sand cylinder structure is adopted, which comprises:

[0005] An upper steel plate;

[0006] An upper steel pipe fixed below the upper steel plate;

[0007] Filling concrete filled in the upper steel pipe;

[0008] A lower steel pipe sleeved with the upper steel pipe, with a reserved interval between the inner wall of the lower steel pipe and the outer wall of the upper steel pipe, a sand unloading hole provided at the bottom of the lower steel pipe and a nut welded thereon;

[0009] A lower steel plate fixed to the bottom surface of the lower steel pipe;

[0010] Filling sand filled in the lower steel pipe and compressed by the filling concrete;

[0011] A shaft cylinder pre-buried in the filling concrete, located on the shaft center line of the upper steel pipe, and fixed to the bottom surface of the upper steel plate;

[0012] A shaft rod slidingly fitted with the shaft cylinder, located on the shaft center line of the lower steel pipe, and fixed to the top surface of the lower steel plate;

[0013] A bolt threadedly connected with the nut and extending into the sand unloading hole to form a blockage.

[0014] With the structure, when the upper steel pipe falls, the axial cylinder moves along the axial rod to ensure the whole falls along the axial line, so that the filling sand is uniformly stressed to ensure uniform sand unloading, which is beneficial to ensure the smooth descent of the upper steel plate and prevent the upper steel plate from tilting.

[0015] In the embodiment, the filling asphalt is arranged between the outer wall of the upper steel pipe and the inner wall of the lower steel pipe.

[0016] With the structure, the asphalt is beneficial to improve the sealing property and prevent rainwater from entering to ensure the drying of fine sand.

[0017] In the embodiment, the concrete cone is arranged on the upper surface of the lower steel plate, is sleeved on the axial rod, and has a height higher than the sand unloading hole.

[0018] With the structure, the fine sand is guided to the sand unloading hole, and the flowability of the fine sand is improved.

[0019] As a further improvement of the utility model, the bottom of the concrete cone is close to the inner wall of the lower steel pipe.

[0020] As a further improvement of the utility model, the side surface of the concrete cone is covered with a smooth steel sheet.

[0021] With the structure, the smooth steel sheet further reduces the friction to improve the flowability of the fine sand.

[0022] As a further improvement of the utility model, the top of the concrete cone is provided with an arc top, and a smooth steel arc top shell is covered, and the arc top and the steel arc top shell are slidably penetrated by the axial rod.

[0023] With the structure, the arc top and the steel arc top shell help to divide the fine sand at the top and improve the flowability of the fine sand at the top.

[0024] The utility model is beneficial to keep the sand cylinder coaxial and concentric falling, and is beneficial to prevent the upper part of the sand cylinder from tilting. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the embodiment.

[0026] Figure 2 It is a sectional structural schematic view of the embodiment without filling sand and filling concrete.

[0027] Figure 3 It is an assembly schematic view of the arc top and the steel arc top shell.

[0028] Figure 4 It is an assembly schematic view of the concrete cone and the steel sheet.

[0029] Reference numerals: 1. Upper steel plate; 2. Upper steel pipe; 3. Concrete filling; 4. Lower steel pipe; 401. Sand discharge hole; 402. Nut; 5. Spacing; 6. Lower steel plate; 7. Sand filling; 8. Shaft cylinder; 9. Shaft rod; 10. Bolt; 11. Asphalt filling; 12. Concrete cone; 13. Steel sheet; 14. Arch apex; 15. Steel arch apex shell. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example 1

[0033] like Figures 1-4 As shown, a sand cylinder structure includes:

[0034] Upper steel plate 1;

[0035] Upper steel pipe 2 is fixed under upper steel plate 1;

[0036] Concrete 3 is filled into the upper steel pipe 2;

[0037] The lower steel pipe 4 is sleeved on the upper steel pipe 2, and a gap 5 is reserved between its inner wall and the outer wall of the upper steel pipe 2. A sand discharge hole 401 is provided at its bottom and a nut 402 is welded thereon.

[0038] The lower steel plate 6 is fixed to the bottom surface of the lower steel pipe 4;

[0039] The filling sand 7 is filled into the lower steel pipe 4 and compacted by the filling concrete 3;

[0040] The spindle 8 is embedded in the filling concrete 3, located on the axis of the upper steel pipe 2, and fixed to the bottom surface of the upper steel plate 1.

[0041] The spindle 9 is slidably adapted to the spindle cylinder 8, is located on the axis of the lower steel pipe 4, and is fixed on the lower steel plate 6.

[0042] Bolt 10, which is threadedly connected to nut 402 and extends into sand discharge hole 401 to form a blockage.

[0043] With this structure, when the upper steel pipe 2 falls, the shaft cylinder 8 moves along the shaft rod 9 to ensure that the whole falls along the shaft line, so that the filling sand 7 is evenly stressed to ensure even sand unloading, which helps to ensure the smooth descent of the upper steel plate 1 and prevent the upper steel plate 1 from tilting.

[0044] In this embodiment, asphalt 11 is provided between the outer wall of the upper steel pipe 2 and the inner wall of the lower steel pipe 4.

[0045] With this structure, asphalt 11 can improve sealing and prevent rainwater from entering, thus ensuring the fine sand dries.

[0046] In this embodiment, a concrete cone 12 is provided on the lower steel plate 6, and the concrete cone 12 is sleeved on the shaft rod 9. The height of the concrete cone 12 is higher than the sand discharge hole 401.

[0047] This structure facilitates the guidance of fine sand to the unloading hole 401, which helps the fine sand flow.

[0048] In this embodiment, the bottom of the concrete cone 12 is in close contact with the inner wall of the lower steel pipe 4.

[0049] In this embodiment, the side of the concrete cone 12 is covered with a smooth steel sheet 13.

[0050] With this structure, the smooth steel sheet 13 further reduces friction to improve the fluidity of the fine sand.

[0051] In this embodiment, the top of the concrete cone 12 is provided with an arc top 14 and covered with a smooth steel arc top shell 15, and the arc top 14 and the steel arc top shell 15 are slidably passed through by the central rod 9.

[0052] With this structure, the arc apex 14 and the steel arc apex shell 15 help to divert the fine sand at the top and improve the fluidity of the fine sand at the top.

[0053] This invention helps the sand cylinder maintain coaxial and concentric falling, and helps prevent the upper part of the sand cylinder from tilting.

[0054] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. A sand cylinder structure, characterized in that... include: Upper steel plate (1); The upper steel pipe (2) is fixed below the upper steel plate (1); The concrete (3) is filled into the upper steel pipe (2); The lower steel pipe (4) is sleeved with the upper steel pipe (2), and a gap (5) is reserved between its inner wall and the outer wall of the upper steel pipe (2). A sand discharge hole (401) is provided at its bottom and a nut (402) is welded on it. The lower steel plate (6) is fixed to the bottom surface of the lower steel pipe (4); The filling sand (7) is filled in the lower steel pipe (4) and compacted by the filling concrete (3); The shaft tube (8) is embedded in the filling concrete (3), located on the axis of the upper steel pipe (2), and fixed to the bottom surface of the upper steel plate (1); A central rod (9) is slidably adapted to the central cylinder (8), located on the axis of the lower steel pipe (4), and fixed on the lower steel plate (6); A bolt (10) is threadedly connected to the nut (402) and extends into the sand discharge hole (401) to form a blockage.

2. The sand cylinder structure according to claim 1, characterized in that... Asphalt (11) is provided between the outer wall of the upper steel pipe (2) and the inner wall of the lower steel pipe (4).

3. The sand cylinder structure according to claim 1, characterized in that... A concrete cone (12) is provided on the lower steel plate (6), and the concrete cone (12) is sleeved on the shaft (9). The height of the concrete cone (12) is higher than the sand discharge hole (401).

4. The sand cylinder structure according to claim 3, characterized in that... The bottom of the concrete cone (12) is in close contact with the inner wall of the lower steel pipe (4).

5. The sand cylinder structure according to claim 4, characterized in that... The sides of the concrete cone (12) are covered with smooth steel sheets (13).

6. The sand cylinder structure according to claim 5, characterized in that... The top of the concrete cone (12) is provided with an arc top (14) and covered with a smooth steel arc top shell (15), the arc top (14) and the steel arc top shell (15) are slidably passed through by a central rod (9).

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