A leak-proof slurry protection casing for karst stratum cast-in-place pile construction

Abstract

The utility model relates to a technology field of anti -leakage slurry protection cylinder especially relates to a kind of anti -leakage slurry protection cylinder for karst stratum bored pile construction, including protection cylinder, fixed plate, electric guide rail, electric sliding block, mounting bracket and locating rod, protection cylinder is sleeved with fixed plate, two electric guide rails are installed on fixed plate, electric sliding block is installed on electric guide rail, electric sliding block slides in electric guide rail, mounting bracket is installed on electric sliding block, and two locating rods are fixedly connected on mounting bracket. By starting electric guide rail, electric guide rail drives electric sliding block to slide inwards, electric sliding block drives mounting bracket and locating rod to move to the center of protection cylinder, until locating rod is accurately inserted in the insertion hole of upper portion of protection cylinder, so that fixed plate is supported on working plane, effectively prevent that protection cylinder sinks or is off-position due to external force or stratum activity in construction process.

Description

Technical Field

[0001] This utility model relates to the field of anti-leakage grouting casing technology, and in particular to an anti-leakage grouting casing for grouting pile construction in karst formations. Background Technology

[0002] A grout-proof casing is a special auxiliary component used in building construction to prevent grout leakage during concrete pouring. Its main function is to seal the joints of the formwork, prevent cement grout from leaking out, protect the edges and corners of the structure, and improve the quality of concrete forming.

[0003] Patent CN219886801U discloses an auxiliary device for grouting steel casing in deep-water hard rock formations. It includes: an inner casing; an outer casing fitted onto the inner casing with a gap between them; a limiting ring fitted onto the inner casing and detachably connected to it; and multiple grouting conduits. When using this patent, the hard rock is leveled, the outer casing is placed on the hard rock layer, and then the limiting ring is fixed to the inner casing. However, this existing patent lacks a support structure, and during grouting, the casing is prone to displacement and tilting due to external factors, leading to uneven grouting.

[0004] Therefore, there is a need to provide a non-deflecting casing for grout leakage prevention in karst formation cast-in-place pile construction. Utility Model Content

[0005] In order to overcome the shortcomings of the existing patents, which lack a support structure and are prone to displacement and tilting due to external factors during grouting, resulting in uneven grouting, this utility model provides a non-displacement grouting casing for grouting pile construction in karst formations.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a leak-proof casing for grouting pile construction in karst formations, comprising a casing, a fixing plate, electric guide rails, an electric slider, an mounting frame, and positioning rods. The casing is fitted with a fixing plate, on which two electric guide rails are mounted. An electric slider is mounted on each electric guide rail and slides within the electric guide rails. An mounting frame is mounted on the electric slider, and two positioning rods are fixedly connected to the mounting frame.

[0007] Furthermore, it also includes a fixed base, a connecting plate, a sliding block, a guide rod, a mounting base, and an elastic element. Two fixed bases are fixedly connected to the fixed plate, and four connecting plates are hinged on the fixed base. Two guide rods are fixedly connected to the mounting base, and sliding blocks are slidably installed on the guide rods. An elastic element is sleeved on the guide rod, and the two ends of the elastic element are connected to the sliding block and the mounting base, respectively. The two connecting plates are hinged to the adjacent sliding blocks.

[0008] Furthermore, it also includes a monitor and an alarm. The monitor is installed on the casing, and two alarms are installed on the monitor. The alarms are electrically connected to the monitor.

[0009] Furthermore, the casing has locking grooves.

[0010] Furthermore, the elastic element is a damping spring.

[0011] Furthermore, two triangular reinforcing ribs are fixedly connected to the mounting bracket.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By starting the electric guide rail, the electric guide rail drives the electric slider to slide inward, and the electric slider drives the mounting frame and positioning rod to move towards the center of the casing until the positioning rod is accurately inserted into the preset insertion hole at the top of the casing, so that the fixing plate is supported on the working plane, effectively preventing the casing from sinking or deviating due to external force or ground movement during construction.

[0013] 2. The fixed plate drives the mounting base to move and compress the connecting plate to rotate. As the connecting plate rotates, it drives the sliding block to slide. The sliding block slides along the guide rod and compresses the elastic element. The compressed elastic element is compressed or stretched, absorbing some of the vibration impact and reducing the rigid impact on the casing.

[0014] 3. The monitor will monitor the mud level or pressure around the casing in real time. When the mud level drops sharply, the monitor will immediately send a signal to the warning device connected to it. The warning device will then issue an audible and visual alarm to remind on-site personnel to take remedial measures quickly to prevent serious accidents such as pile hole collapse. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the protective sleeve, fixing plate, and electric guide rail.

[0017] Figure 3 This is a three-dimensional structural diagram of the electric slider, mounting bracket, and positioning rod of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the components of this utility model, including the fixing base, connecting plate, and sliding block.

[0019] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, including the fixing plate, the monitor, and the warning device.

[0020] In the attached diagram, the following are the reference numerals: 1-protective casing, 2-fixed plate, 3-electric guide rail, 4-electric slider, 5-mounting bracket, 6-positioning rod, 7-fixed seat, 8-connecting plate, 9-sliding block, 10-guide rod, 11-mounting seat, 12-elastic element, 13-monitor, 14-warning device. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] Example 1: A leak-proof casing for grouting pile construction in karst formations, see reference. Figures 1-5 As shown, the device includes a protective sleeve 1, with two sets of insertion holes symmetrically opened on the upper left and right sides of the protective sleeve 1, with three insertion holes forming a set. It also includes a fixing plate 2, an electric guide rail 3, an electric slider 4, a mounting bracket 5, and positioning rods 6. The upper part of the protective sleeve 1 is fitted with the fixing plate 2. The left and right sides of the fixing plate 2 are equipped with electric guide rails 3 by bolt connection. Electric sliders 4 are installed on the electric guide rails 3 and slide inside the electric guide rails 3. The mounting bracket 5 is installed on the electric slider 4 and fits against the outer wall of the protective sleeve 1. Two positioning rods 6 are installed on the mounting bracket 5 by welding. The positioning rods 6 are inserted into the insertion holes on the protective sleeve 1.

[0023] See Figures 1-3 As shown, the lower part of the casing 1 has a locking groove, which allows two identical casings 1 to be locked together and lengthened.

[0024] See Figures 1-3 As shown, two triangular reinforcing ribs are fixedly connected to the mounting bracket 5.

[0025] When using this device, move the fixing plate 2 to a suitable position on the casing 1 as needed, then start the electric guide rail 3. The electric guide rail 3 drives the electric slider 4 to slide inward. The electric slider 4 drives the mounting frame 5 and the positioning rod 6 to move towards the center of the casing 1 until the positioning rod 6 is precisely inserted into the preset insertion hole on the upper part of the casing 1. This allows the fixing plate 2 to be supported on the working plane, effectively preventing the casing 1 from sinking or shifting due to external forces or ground movement during construction. Then, the casing 1 is inserted into the borehole to form the pile hole wall, preventing collapse and grout leakage.

[0026] Example 2: Based on Example 1, refer to Figure 1 and Figure 4 As shown, it also includes a fixed base 7, a connecting plate 8, a sliding block 9, a guide rod 10, a mounting base 11, and an elastic element 12. The fixed base 7 is symmetrically provided on the bottom of the fixed plate 2 by welding. The connecting plates 8 are hinged on both the front and rear sides of the fixed base 7. The guide rod 10 is fixedly connected to both the front and rear sides of the mounting base 11. The sliding block 9 is slidably provided on the guide rod 10. The elastic element 12 is sleeved on the guide rod 10. The two ends of the elastic element 12 are connected to the sliding block 9 and the mounting base 11 respectively. The two connecting plates 8 are hinged to the adjacent sliding blocks 9.

[0027] See Figure 1 and Figure 4 As shown, the elastic element 12 is a damping spring.

[0028] When subjected to compression and impact, the fixed plate 2 causes the mounting base 11 to tilt and move, while the connecting plate 8 is rotated. As the connecting plate 8 rotates, the sliding block 9 slides. The sliding block 9 slides along the guide rod 10 to compress the elastic element 12. The elastic element 12 is compressed or stretched, absorbing part of the vibration and impact, and reducing the rigid impact on the casing 1.

[0029] See Figure 1 and Figure 5 As shown, it also includes a monitor 13 and an alarm 14. The monitor 13 is installed on the upper front side of the casing 1 by means of bolt connection. The alarm 14 is installed on both the left and right sides of the monitor 13. The alarm 14 is electrically connected to the monitor 13.

[0030] When in use, the monitor 13 monitors the mud level or pressure around the casing 1 in real time. If a large amount of mud is suddenly lost from the casing 1, causing a sharp drop in the mud level, the monitor 13 immediately sends a signal to the alarm 14 which is electrically connected to it. The alarm 14 then issues an audible and visual alarm to remind on-site personnel to take remedial measures quickly to prevent serious accidents such as pile hole collapse.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leakage-proof slurry protection casing for construction of a karst stratum cast-in-place pile, comprising a protection casing (1), characterized in that: It also includes a fixed plate (2), an electric guide rail (3), an electric slider (4), a mounting bracket (5), and a positioning rod (6). The fixed plate (2) is fitted on the sleeve (1). Two electric guide rails (3) are installed on the fixed plate (2). An electric slider (4) is installed on the electric guide rail (3). The electric slider (4) slides inside the electric guide rail (3). A mounting bracket (5) is installed on the electric slider (4). Two positioning rods (6) are fixedly connected to the mounting bracket (5).

2. The leakage-proof slurry protection casing for construction of a cast-in-place pile in karst stratum according to claim 1, characterized in that: It also includes a fixed seat (7), a connecting plate (8), a sliding block (9), a guide rod (10), a mounting seat (11), and an elastic element (12). Two fixed seats (7) are fixedly connected to the fixed plate (2). Four connecting plates (8) are hinged on the fixed seat (7). Two guide rods (10) are fixedly connected to the mounting seat (11). A sliding block (9) is slidably provided on the guide rod (10). An elastic element (12) is sleeved on the guide rod (10). The two ends of the elastic element (12) are connected to the sliding block (9) and the mounting seat (11) respectively. The two connecting plates (8) are hinged to the adjacent sliding blocks (9).

3. The leakage-proof slurry protection casing for construction of a cast-in-place pile in karst stratum according to claim 2, characterized in that: It also includes a monitor (13) and an alarm (14). The monitor (13) is installed on the casing (1), and two alarms (14) are installed on the monitor (13). The alarms (14) are electrically connected to the monitor (13).

4. The leakage-proof slurry protection casing for construction of a cast-in-place pile in karst stratum according to claim 3, characterized in that: The sleeve (1) has a locking groove.

5. A grout-proof casing for karst pile construction according to claim 4, characterized in that: The elastic element (12) is a damping spring.

6. A grout-proof casing for karst pile construction according to claim 5, characterized in that: The mounting bracket (5) has two triangular reinforcing ribs fixedly connected to it.

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