A temporary support sandbox device with synchronous unloading

Abstract

This utility model relates to the field of bridge construction technology and discloses a temporary bearing sand box device with synchronous unloading. It includes two bases, one of which has a sand box, and the other base has a top cover that fits and inserts into the sand box. Several sand outlet pipes for discharging sand are connected through the sand box. A sand blowing assembly is installed on the sand box. The sand blowing assembly includes an air inlet pipe that penetrates the side wall of the sand box, and an air supply pipe that is connected to the air supply pipe. The air supply pipe has the same number of output pipes as the sand outlet pipes, and the air outlets of the output pipes point one-to-one towards the sand outlet pipes. Using the sand blowing assembly composed of the air inlet pipe, air supply pipe, and output pipes, gas is pumped in by an air pump to form a directional airflow, which simultaneously blows fine sand out from multiple sand outlet pipes along the sand guide groove of the conical seat. The unloading time is reduced from tens of minutes in traditional manual operation to several seconds, significantly shortening the bearing replacement period.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a temporary support sand box device that can be simultaneously unloaded. Background Technology

[0002] Sand boxes are used in the construction of cast-in-place beams with steel pipe pile supports for unloading purposes. After the steel pipe pile support Bailey beam is erected, the construction of the cast-in-place beam begins. After the cast-in-place beam construction is completed, the support needs to be dismantled. At this time, it is difficult to dismantle the support because the weight of the beam is entirely on the support. It is not an easy task to dismantle the support. Therefore, when constructing the support, we need to set up sand boxes between the steel pipe piles and the distribution beam in advance. The sand boxes act as jacks.

[0003] Currently, when unloading temporary support sand box devices, the common practice is to manually use a thin steel bar to dig out fine sand hole by hole along the sand outlet pipe. This operation mode has significant drawbacks. Manual digging is inefficient, and unloading a single sand box takes tens of minutes, which is difficult to meet the construction requirements of simultaneous unloading of multiple supports and increases the construction time of the bridge. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a temporary support sand box device that can be unloaded synchronously, so as to solve the above-mentioned shortcomings in the prior art.

[0005] Technical solution: A temporary support sand box device with synchronous unloading includes two bases, one base on which a sand box is mounted, and the other base on which a top cover is mounted that fits and inserts into the sand box. Several sand discharge pipes are provided through the sand box for discharging sand. A sand blowing assembly is installed on the sand box.

[0006] The sand blowing assembly includes an air inlet pipe that penetrates the side wall of the sand box, and an air supply pipe that is connected to the air supply pipe. The air supply pipe has the same number of output pipes as the number of sand outlet pipes, and the air outlets of the output pipes point one by one to the direction of the sand outlet pipes.

[0007] As a further description of the above technical solution: a conical seat is provided on the inner bottom wall of the sand box, and a number of sand guiding grooves corresponding one-to-one with the output pipe are opened on the side wall of the conical seat, and the output pipe is located inside the corresponding sand guiding groove.

[0008] As a further description of the above technical solution: a second rubber ring in the shape of an annular platform is provided on the inner wall of the air intake pipe near the air inlet.

[0009] As a further description of the above technical solution: the sand box is also equipped with a synchronous opening assembly, wherein,

[0010] The synchronous opening assembly includes a movable ring sleeved on the outside of the sand box. Several fixed blocks are provided on the bottom surface of the movable ring. A transmission rod is rotatably connected to each fixed block, and a slider is rotatably connected to the end of the transmission rod away from the fixed block. The slider is connected to a pipe cover for sealing the sand outlet pipe through a connecting frame.

[0011] As a further description of the above technical solution: the side wall of the sand box is fixedly connected with the same number of sliders and they are used in a one-to-one correspondence. Each of the fixed seats is provided with a sliding groove. The slider is slidably connected inside the corresponding sliding groove, and the connecting frame is arranged through the fixed seat.

[0012] As a further description of the above technical solution: a rubber ring is also provided on the outer wall of the pipe cover.

[0013] As a further description of the above technical solution: a first connecting block is provided on the top surface of the movable ring, and a second connecting block is provided on the side wall of the sand box. Both the first and second connecting blocks are provided with threaded grooves and are connected and fixed by bolts passing through the threaded grooves. A nut is provided on the bolt for matching use.

[0014] Beneficial effects: The sand blowing assembly, consisting of an inlet pipe, an outlet pipe, and an outlet pipe, uses an air pump to pump in gas to form a directional airflow, which blows fine sand out simultaneously from multiple outlet pipes along the sand guide groove of the cone seat. The unloading time is reduced from tens of minutes in traditional manual operation to a few seconds, which greatly shortens the support replacement period. In addition, multiple fine sand unloading outlets are set up, and the sealing caps of all outlet pipes are pulled out simultaneously using a synchronous opening assembly, which increases the amount of fine sand unloaded per unit time. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a temporary support sand box device that can be simultaneously unloaded according to the present invention.

[0016] Figure 2 This is a cross-sectional view of the sand box of this utility model;

[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0019] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0020] Figure 6 This is a three-dimensional structural diagram of the pipe cap of this utility model.

[0021] Legend:

[0022] 1. Base; 2. Sand box; 3. Top cover; 4. Fixed seat; 5. Slide groove; 6. Slider; 7. Connecting frame; 8. Pipe cover; 9. Rubber ring No. 1; 10. Sand outlet pipe; 11. Movable ring; 12. Connecting block No. 1; 13. Bolt; 14. Connecting block No. 2; 15. Nut; 16. Fixed block; 17. Transmission rod; 18. Air inlet pipe; 19. Rubber ring No. 2; 20. Air delivery pipe; 21. Output pipe; 22. Conical seat; 23. Sand guide groove. Detailed Implementation

[0023] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-6 A temporary support sand box device with synchronous unloading includes two bases 1 for connection to the bridge's pivot. One base 1 has a sand box 2 mounted on it, and the other base 1 has a top cover 3 that fits snugly into the sand box 2. The sand box 2 has several sand discharge pipes 10 that discharge sand. A sand blowing assembly is installed on the sand box 2.

[0025] The sand blowing assembly includes an air inlet pipe 18 that runs through the side wall of the sand box 2. It should be noted that the air inlet pipe 18 can be installed by first drilling holes in the side wall of the sand box 2 and then welding the air inlet pipe 18 to the drilled groove in the sand box 2. The air inlet pipe 18 is connected to an air supply pipe 20. The air supply pipe 20 is provided with an output pipe 21, which is the same number as the sand outlet pipe 10. The air outlets of the output pipe 21 point one by one to the direction of the sand outlet pipe 10.

[0026] Furthermore, a conical seat 22 is provided on the inner bottom wall of the sand box 2. It should be noted that the conical seat 22 is cone-shaped, and fine sand flows downward from the inclined surface of the conical seat 22, which makes it easier for the fine sand to flow out from the direction of the sand outlet pipe 10. Several sand guide grooves 23 corresponding to the output pipe 21 are opened on the side wall of the conical seat 22, which can guide the fine sand that falls into the sand guide groove 23 to the inside of the sand outlet pipe 10 and discharge it. The output pipe 21 is located inside the corresponding sand guide groove 23.

[0027] Furthermore, a second rubber ring 19 in the shape of an annular platform is provided on the inner wall of the air intake pipe 18 near the air inlet, which can improve the sealing performance and make the connection more secure when the air intake pipe 18 is connected to the pipe of the gas source. Here, the gas source refers to the source that can deliver gas to the air intake pipe 18, preferably an air pump.

[0028] Specifically, during the process of dismantling the temporary support sand box and replacing the permanent support, the air inlet pipe 18 on the sand box 2 is connected to an external air pump. Then, gas is pumped into the air delivery pipe 20 through the air inlet pipe 18, and then from the air delivery pipe 20 to the branch output pipe 21. Air is then discharged from the output pipe 21. Affected by the wind direction, the fine sand is blown out from the inside of multiple sand outlet pipes 10 along the sand guide groove 23. Compared with using a thin steel wire to scoop the fine sand out of the inside of the sand box 2 little by little along the sand outlet pipe 10, the efficiency is higher and the time for replacing the support is shortened.

[0029] Furthermore, a synchronous opening assembly is also installed on the sand box 2, wherein,

[0030] The synchronous opening assembly includes a movable ring 11 sleeved on the outside of the sand box 2. Several fixed blocks 16 are provided on the bottom surface of the movable ring 11. A transmission rod 17 is rotatably connected to each fixed block 16, and a slider 6 is rotatably connected to the end of the transmission rod 17 away from the fixed block 16. The slider 6 is connected to a pipe cover 8 for sealing the sand outlet pipe 10 through a connecting frame 7.

[0031] Furthermore, the side wall of the sand box 2 is fixedly connected with a fixed seat 4 that is the same number as the slider 6 and is used in a one-to-one correspondence. Each fixed seat 4 is provided with a sliding groove 5. The slider 6 is slidably connected inside the corresponding sliding groove 5, and the connecting frame 7 is arranged through the fixed seat 4.

[0032] Furthermore, a first rubber ring 9 is provided on the outer wall of the pipe cover 8. It should be noted that the first rubber ring 9 is a truncated ring shape, and the closer it is to the sand outlet pipe 10, the smaller the radius of the first rubber ring 9. This can increase the fit between the pipe cover 8 and the sand outlet pipe 10 when the pipe cover 8 is inserted into the sand outlet pipe 10, making the connection more secure.

[0033] Furthermore, a first connecting block 12 is provided on the top surface of the movable ring 11, and a second connecting block 14 is provided on the side wall of the sand box 2. It should be noted that, in order to make the tension of the transmission rod 17 on the movable ring 11 more uniform, two first connecting blocks 12 and two connecting blocks 14 are provided, and the first connecting blocks 12 are symmetrically arranged on the movable ring 11. The nuts 15 are arranged above the corresponding first connecting blocks 12. Both the first connecting blocks 12 and the second connecting blocks 14 are provided with threaded grooves, and are connected and fixed by bolts 13 passing through the threaded grooves. The bolts 13 are provided with nuts 15 for matching use. It should be noted that, in order to avoid the construction vibration affecting the connection between the first connecting blocks 12 and the second connecting blocks 14, shims can be added between the nuts 15 and the second connecting blocks 14 and between the bolts 13 and the first connecting blocks 12.

[0034] Specifically, before sand blowing, the bolt 13 can be pulled out from between the first connecting block 12 and the second connecting block 14 to separate them. Then, the movable ring 11 can be pressed down to rotate the transmission rod 17. The transmission rod 17 then pushes the slider 6 to slide along the groove 5 on the fixed seat 4, and through the connecting frame 7, it drives the pipe cover 8 to be pulled out from the inside of the sand outlet pipe 10. This process can simultaneously pull out multiple pipe covers 8 from the inside of the sand outlet pipe 10, so that the fine sand inside the sand box 2 can be unloaded from the inside of multiple sand outlet pipes 10 at the same time. The opening method is more efficient, further shortens the unloading time of fine sand, and improves efficiency.

[0035] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A temporary support sand box device that can be synchronized with unloading, comprising two bases (1), characterized in that, One of the bases (1) is provided with a sand box (2), and the other base (1) is provided with a top cover (3) that can fit into the sand box (2). Several sand discharge pipes (10) for discharging sand are provided through the sand box (2). A sand blowing assembly is installed on the sand box (2). The sand blowing assembly includes an air inlet pipe (18) that runs through the side wall of the sand box (2). The air inlet pipe (18) is connected to an air supply pipe (20). The air supply pipe (20) has the same number of output pipes (21) as the sand outlet pipes (10), and the air outlets of the output pipes (21) point one by one to the direction of the sand outlet pipes (10).

2. A temporary support sand box apparatus according to claim 1, wherein, The sand box (2) has a cone seat (22) on its inner bottom wall. The cone seat (22) has several sand guide grooves (23) that correspond one-to-one with the output pipe (21) on its side wall. The output pipe (21) is located inside the corresponding sand guide groove (23).

3. A synchronously unloading temporary support flask arrangement according to claim 2, characterized in that A second rubber ring (19) in the shape of an annular platform is provided on the inner wall of the air inlet pipe (18) near the air inlet.

4. The temporary support sand box device with synchronous unloading according to claim 1, characterized in that, The sand box (2) is also equipped with a synchronous opening assembly, wherein, The synchronous opening assembly includes a movable ring (11) sleeved on the outside of the sand box (2). Several fixed blocks (16) are provided on the bottom surface of the movable ring (11). A transmission rod (17) is rotatably connected to each fixed block (16), and a slider (6) is rotatably connected to one end of the transmission rod (17) away from the fixed block (16). The slider (6) is connected to a pipe cover (8) for sealing the sand outlet pipe (10) through a connecting frame (7).

5. A synchronously unloading temporary support flask arrangement according to claim 4, characterized in that The side wall of the sand box (2) is fixedly connected with a fixed seat (4) that is the same number as the slider (6) and is used in a one-to-one correspondence. Each fixed seat (4) is provided with a groove (5). The slider (6) is slidably connected inside the corresponding groove (5), and the connecting frame (7) is arranged through the fixed seat (4).

6. A synchronously unloading temporary support flask apparatus according to claim 4, wherein, A rubber ring (9) is also provided on the outer wall of the pipe cap (8).

7. A temporary support sand box apparatus that can be synchronized with unloading according to claim 4, characterized in that, A first connecting block (12) is provided on the top surface of the movable ring (11), and a second connecting block (14) is provided on the side wall of the sand box (2). Both the first connecting block (12) and the second connecting block (14) are provided with threaded grooves and are connected and fixed by bolts (13) passing through the threaded grooves. A nut (15) is provided on the bolt (13) for use with it.

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