Over-pouring height control device for cast-in-place concrete pile

Abstract

The utility model relates to a cast-in-place concrete pile over-filling height control device which comprises a measuring rope, a pressure transmitter, a display terminal in communication connection with the pressure transmitter, a protective cylinder arranged on the outer side of the pressure transmitter in a sleeved mode, a gravity head fixedly connected to the lower end of the protective cylinder and a balance rod with one end fixedly connected to the protective cylinder. The pressure transmitter is fixedly connected to the gravity head, the upper end of the protection cylinder is fixedly connected to one end of the measuring rope, a slurry hole communicated with the pressure transmitter is formed in the side wall of the protection cylinder in a penetrating mode, and the other end of the balance rod is used for being detachably connected to the outer wall of a guide pipe. According to the utility model, the technical problems that the over-filling detection cost of the cast-in-place pile is high and the over-filling height detection accuracy is not high can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for bored pile construction, in particular to a device for controlling the over-pouring height of a concrete bored pile. Background Art

[0002] In the process of bored pile construction, in order to ensure the quality of piles and eliminate the disadvantage of insufficient floating slurry strength at the top of the pile, it is required to over-cast a certain height when pouring concrete. During the pouring process, the concrete guide tube is inserted into the pile hole for pouring. As the pouring unit time changes, after pouring a certain height, the guide tube is lifted, and then the pouring operation continues. In the unit time, the concrete slurry poured first is squeezed by the concrete slurry poured later to become the upper layer.

[0003] During the actual pouring process, the error of manual measurement by the measuring rope is large, especially for bored piles whose tops are designed to be far below the ground. Due to the invisibility of the underground and the variability of the pouring process, it is easy to cause problems such as insufficient concrete pouring or excessive over-pouring of the top of the pile. The measuring rope method is used to measure the over-pouring height. For example, assuming that the diameter of the engineering pile is 800mm, each pile is over-pouring by an average of 2.0-3.0m, and the over-concrete volume of a single engineering pile is about 1.0-1.5m3. The cost of over-pouring is high, and the measuring rope is used for multiple measurements. The over-pouring height of concrete is difficult to be effectively controlled, the error is large, and it is time-consuming and labor-intensive to chisel off the pile head later. There are also safety risks.

[0004] In order to solve the problem of relatively inaccurate measurement by the rope measurement method, the existing technology uses equipment such as "Guan Wuyou" and "RSM-COD (A) Concrete Over-pouring Tester" for mechanized measurement. However, this measurement method can only measure multiple pile holes in sequence, which is inefficient and has high equipment procurement costs. Utility Model Content

[0005] The utility model provides a concrete bored pile over-pouring height control device, which can improve the technical problems of high bored pile over-pouring detection cost and low over-pouring height detection accuracy.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A device for controlling the over-pouring height of a concrete bored pile comprises a measuring rope, a pressure transmitter, a display terminal communicatively connected to the pressure transmitter, a protective tube sleeved on the outside of the pressure transmitter, a gravity head fixedly connected to the lower end of the protective tube, and a balance rod fixedly connected to the protective tube at one end, the pressure transmitter fixedly connected to the gravity head, the upper end of the protective tube fixedly connected to one end of the measuring rope, a slurry hole communicating with the pressure transmitter is formed through the side wall of the protective tube, and the other end of the balance rod is used for detachable connection to the outer wall of a conduit.

[0008] The beneficial effect of the utility model is as follows: when the grouting is about to reach the designed elevation of the pile top, the balance bar is installed on the outer wall of the conduit, and then the grouting is continued, the concrete slurry enters the protective tube from the slurry hole and contacts the pressure transmitter, and the pressure data value collected by the pressure transmitter is transmitted to the display terminal in real time. With the continuous pouring of the concrete slurry, the depth of the concrete slurry of the bored pile increases, and the pressure value displayed on the display terminal changes. The over-filling height can be judged by this value to improve the problem of low detection accuracy. During the entire test process, the balance bar fixed on the conduit with a constant height supports the protective tube to ensure the balance of the protective tube, the gravity head and the pressure transmitter, and under the gravity of the gravity head, the pressure transmitter maintains a relatively constant height, thereby improving the technical problems of high cost of over-filling detection of bored piles and low accuracy of over-filling height detection.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the balance rod comprises a sleeve rod with one end fixedly connected to the protection tube and a fastener with one end connected to the other end of the sleeve rod, and the fastener is detachably connected to the outer wall of the catheter.

[0011] The beneficial effect of adopting the above further solution is that during the test, the fastener is firmly connected to the catheter to ensure the balance of the protection tube under the cantilever support formed by the sleeve rod.

[0012] Furthermore, the fastener includes a rotating shaft with both ends rotatably connected to the other end of the sleeve rod, two clamping plates with middle ends fixedly connected to the rotating shaft, and a bidirectional driving member installed on the sleeve rod, the two driving ends of the bidirectional driving member are respectively transmission-connected to one end of the two clamping plates, and the other ends of the two clamping plates are used to clamp the catheter.

[0013] The beneficial effect of adopting the above further solution is: when the fastener is connected to the conduit, the bidirectional driving member is started to drive the two clamping plates to rotate around the rotating shaft at the same time until the two clamping plates are clamped on the outer wall of the conduit at the same time.

[0014] Furthermore, the other ends of the two clamping plates are bent towards each other in an arc shape.

[0015] The beneficial effect of adopting the above further solution is that the arc-shaped clamping plate relatively fits the outer wall of the catheter, so that under the action of the bidirectional driving member, the catheter is firmly clamped to prevent loosening and relative separation.

[0016] Furthermore, the rotating shaft includes coaxial shaft one and shaft two, one end of shaft one and one end of shaft two are rotatably connected to each other, and the other ends of shaft one and shaft two facing away from each other are both rotatably connected to the other end of the sleeve rod, and the middle ends of the two clamping plates are fixedly connected to shaft one and shaft two, respectively.

[0017] The beneficial effect of adopting the above further solution is that when the bidirectional driving member is started, the two clamping plates of the bidirectional driving member rotate relative to each other, and the coaxial shafts 1 and 2 rotate relative to each other.

[0018] Furthermore, the sleeve rod includes a fixed rod with one end fixedly connected to the protection tube and a protection box fixedly connected to the other end of the fixed rod, the rotating shaft is rotatably connected to the protection box, and the bidirectional driving member is located in the protection box.

[0019] The beneficial effect of adopting the above further solution is that the protection box protects the bidirectional driving member to reduce the probability of contact with the concrete slurry.

[0020] Furthermore, the lateral opening of the protection box forms a mounting groove, and the two ends of the rotating shaft are respectively rotatably connected to two opposite groove walls of the mounting groove, and the two sides thereof are respectively abutted against the other two opposite groove walls of the mounting groove.

[0021] The beneficial effect of adopting the above further solution is: by providing an installation slot to form an installation window for the rotating shaft, the rotating shaft is ensured to be rotatable, while the side of the rotating shaft is abutted against the wall of the installation slot to reduce the probability of concrete slurry entering.

[0022] Furthermore, a support rod is fixed in the protection box, one end of the support rod is fixedly connected to the protection box, and the other end of the support rod is fixedly connected to the bidirectional driving member.

[0023] The beneficial effect of adopting the above further solution is: the support rod is used to form a mounting base for the bidirectional drive member.

[0024] Furthermore, the lower end of the protection box is open and is detachably connected with a cover plate.

[0025] The beneficial effect of adopting the above further solution is that the concrete slurry that may enter the protection box can be cleaned by opening the cover plate, and the installation of the two-way driving member can be facilitated.

[0026] Furthermore, the cross-sectional area of ​​the gravity head gradually decreases from top to bottom.

[0027] The beneficial effect of adopting the above further solution is to reduce the downward resistance of the gravity head.

[0028] By adopting the above technical solution, the utility model has at least one of the following technical effects:

[0029] 1. By setting a pressure transmitter, the pressure value at the height of the pressure transmitter is measured in real time as the depth of the concrete slurry of the bored pile increases, and the pressure value is transmitted to the display terminal for display, thereby changing the problem of low accuracy of detection by the rope measuring method in the prior art, and the technical problem of high cost of over-filling detection of bored piles in the prior art using other equipment for measurement;

[0030] 2. The balance rod is set to support the protective tube to prevent the protective tube and the pressure transmitter from tilting due to unbalanced force during the grouting process, resulting in inaccurate measurement and low measurement efficiency;

[0031] 3. By setting a bidirectional driving member and rotating two clamping plates connected to the rotating shaft at the middle end at the same time, the two clamping plates can quickly clamp or release the catheter through the bidirectional driving member, which is easy to use and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 It is a partial cross-sectional view of the utility model;

[0034] Figure 3 for Figure 2 A partial enlarged view of

[0035] Figure 4 This is a top view of the local structure of the utility model, mainly used to show the clamping plate.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Measuring rope; 11. Wire winding drum;

[0038] 2. Pressure transmitter; 21. Wire;

[0039] 3. Display terminal;

[0040] 4. Gravity head;

[0041] 5. Protective tube; 51. Fixing tube; 511. Step hole; 52. Mounting tube; 521. Slurry hole;

[0042] 6. Balance bar; 61. Sleeve bar; 611. Fixed bar; 612. Protective box; 6121. Mounting slot; 62. Fastener; 621. Rotating shaft; 6211. Axis 1; 6212. Axis 2; 622. Clamping plate; 6221. Fixed seat; 623. Two-way driving member; 63. Support bar; 64. Cover plate;

[0043] 7. Catheter. DETAILED DESCRIPTION

[0044] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0045] Example 1

[0046] like Figure 1 and Figure 2 A device for controlling the over-pouring height of a concrete bored pile comprises a measuring rope 1, a pressure transmitter 2, a display terminal 3 connected to the pressure transmitter 2 for communication, a protective tube 5 sleeved on the outside of the pressure transmitter 2, a gravity head 4 fixedly connected to the lower end of the protective tube 5, and a balance rod 6 fixedly connected to the protective tube 5 at one end, the pressure transmitter 2 is fixedly connected to the gravity head 4, the upper end of the protective tube 5 is fixedly connected to one end of the measuring rope 1, a slurry hole 521 connected to the pressure transmitter 2 is penetrated through the side wall of the protective tube 5, and the other end of the balance rod 6 is used for detachable connection to the outer wall of the conduit 7.

[0047] The beneficial effect of this embodiment is that when the grouting is about to reach the designed elevation of the pile top, the balance bar 6 is installed on the outer wall of the conduit 7, and then the grouting is continued. The concrete slurry enters the protective tube 5 from the slurry hole 521 and contacts the pressure transmitter 2. The pressure data value collected by the pressure transmitter 2 is transmitted to the display terminal 3 in real time. As the concrete slurry is continuously poured, the depth of the concrete slurry of the bored pile increases, and the pressure value displayed on the display terminal 3 changes. The over-filling height can be judged by this value to improve the problem of low detection accuracy. During the entire test process, the balance bar 6 fixed on the conduit 7 with a constant height supports the protective tube 5 to ensure the balance of the protective tube 5, the gravity head 4 and the pressure transmitter 2, and under the gravity of the gravity head 4, the pressure transmitter 2 maintains a relatively constant height, thereby improving the technical problems of high cost of bored pile over-filling detection and low accuracy of over-filling height detection.

[0048] Among them, the specific method of installing the balance rod 6 on the outer wall of the conduit 7 can be that when the grouting is about to reach the designed elevation of the pile top, the conduit 7 is lifted to the outside of the pile top, and then the balance rod 6 is installed, and the conduit 7 is lowered again until it drops to the original height.

[0049] Of course, as another testing method, the height of the pressure transmitter 2 can be changed by raising or lowering the conduit 7 to measure the pressure values ​​at different depths.

[0050] During the concrete pouring process, mud, slurry, and concrete pass through the probe in turn. The compressive stress measured by the probe of pressure transmitter 2 changes significantly during the concrete pouring process. The pressure change in the mud remains basically stable. As the concrete surface reaches the elevation of the pressure probe, the pressure value shows a steep upward trend. Therefore, it can be judged that the concrete surface has reached the over-pouring elevation.

[0051] Through this test method, at the same pile hole diameter (such as 800mm), the concrete overfilling height is controlled at about 1.0m. Compared with the traditional rope test method, a single engineering pile can save 0.5-1.0m3 of concrete. The unit price of concrete is about 450 yuan / m3, and a single engineering pile can save 225-450 yuan in material costs. Calculated based on the construction of 10,000 cast-in-place piles, the concrete material cost can be saved by 2.25-4.5 million yuan.

[0052] This reduces the time and effort required to chisel off the pile heads at a later stage, as well as the safety risks involved. It also effectively reduces solid waste, reduces environmental impact, and makes green construction energy-saving and environmentally friendly.

[0053] A winding drum 11 is also provided on the ground so as to fix the upper end of the measuring rope 1 and to retract and release the measuring rope 1 through the winding drum 11 .

[0054] As one of the parallel solutions of the above embodiment, the communication connection mode between the display terminal 3 and the pressure transmitter 2 may be a wireless communication connection.

[0055] As a second parallel solution of the above embodiment, a wire 21 is connected between the display terminal 3 and the pressure transmitter 2. The lower end of the wire 21 is inserted into the protective tube 5 to connect with the pressure transmitter 2. The protective tube 5 can protect the pressure transmitter 2 and the lower end of the wire 21.

[0056] The pressure transmitter 2 can be purchased from the market. The display terminal 3 can be a mobile phone, a computer, etc.

[0057] The number of the pulp holes 521 can be one, two, three, etc.

[0058] Based on the above embodiment, the protection tube 5 includes a fixing tube 51 whose upper end is fixedly connected to the balance rod 6 and a mounting tube 52 whose upper end is threadedly connected to the lower end of the fixing tube 51, the gravity head 4 is fixedly connected to the lower end of the mounting tube 52, and the pressure transmitter 2 is located in the mounting tube 52, and the slurry hole 521 is opened in the mounting tube 52. Before testing, the overall length of the protection tube 5 can be adjusted by relatively rotating the fixing tube 51 and the mounting tube 52.

[0059] A stepped hole 511 is provided in the fixing tube 51, and the upper end of the mounting tube 52 is threadedly connected to the hole wall of the stepped hole 511. The mounting tube 52 is threadedly connected to the stepped hole 511 to prevent the fixing tube 51 and the mounting tube 52 from being separated.

[0060] As a specific solution of the above embodiment, the stepped hole 511 is an opening structure with a small opening at the top and a large opening at the bottom, and the upper end of the mounting tube 52 is threadedly connected to the stepped hole 511 through an external thread. The lower end of the measuring rope 1 is fixedly connected to the upper end of the fixing tube 51; the lower end of the wire 21 extends from the upper opening of the stepped hole 511 into the fixing tube 51.

[0061] The installation tube 52 is a tubular structure that penetrates from top to bottom, and the lower end of the wire 21 extends into the upper opening of the installation tube 52 and is connected to the pressure transmitter 2 .

[0062] Example 2

[0063] like Figure 2 and Figure 3 On the basis of Example 1, the balance rod 6 includes a sleeve rod 61 with one end fixedly connected to the protection tube 5, and a fastener 62 with one end connected to the other end of the sleeve rod 61. The fastener 62 is detachably connected to the outer wall of the conduit 7.

[0064] The beneficial effect of adopting the preferred solution in the above embodiment is that the fastener 62 is firmly connected to the conduit 7 to ensure the balance of the protection tube 5 under the cantilever support formed by the sleeve rod 61.

[0065] The horizontal position of the pressure transmitter 2 can be changed by selecting sleeve rods 61 of different lengths.

[0066] Example 3

[0067] like Figures 2 to 4 On the basis of embodiments 1 and 2, the fastener 62 includes a rotating shaft 621 whose two ends are rotatably connected to the other end of the sleeve rod 61, two clamping plates 622 whose middle ends are fixedly connected to the rotating shaft 621, and a bidirectional driving member 623 installed on the sleeve rod 61, the two driving ends of the bidirectional driving member 623 are respectively connected to one end of the two clamping plates 622, and the other end of the two clamping plates 622 is used to clamp the catheter 7.

[0068] The beneficial effect of adopting the preferred solution in the above embodiment is that when the fastener 62 is connected to the conduit 7, the bidirectional driving member 623 is started to drive the two clamping plates 622 to rotate around the rotating shaft 621 at the same time until the two clamping plates 622 are clamped on the outer wall of the conduit 7 at the same time.

[0069] When it is necessary to quickly separate the conduit 7 from the entire concrete pile overfilling height control device, it is only necessary to control the bidirectional driving member 623 to start, the two clamping plates 622 release the conduit 7, and then use the measuring rope 1 to pull out the pile.

[0070] As a parallel solution of the above embodiment, the fastener 62 may also be a clamp, but this usage mode can only be used to disassemble the fastener 62 outside the pile hole.

[0071] The bidirectional driving member 623 can be a double-headed cylinder with waterproof function, which can be purchased from the market and installed.

[0072] Specifically, the two clamping plates 622 are located on different horizontal planes, and the two clamping plates 622 are distributed in an "X" shape.

[0073] Based on the above embodiment, the two driving ends of the bidirectional driving member 623 are respectively connected to the other ends of the two clamping plates 622 , and the two fixing seats 6221 are respectively connected to the two driving ends of the bidirectional driving member 623 .

[0074] Example 4

[0075] like Figures 2 to 4 Based on the embodiments 1-3, the other ends of the two clamping plates 622 are bent toward each other in an arc shape.

[0076] The beneficial effect of adopting the preferred solution in the above embodiment is that the arc-shaped clamping plate 622 relatively fits the outer wall of the conduit 7, so that under the action of the bidirectional driving member 623, the conduit 7 is firmly clamped to prevent loosening and relative separation.

[0077] Example 5

[0078] like Figures 2 to 4 On the basis of Examples 1-4, the rotating shaft 621 includes coaxial shaft 1 6211 and shaft 2 6212, one end of shaft 1 6211 and one end of shaft 2 6212 are rotatably connected to each other, and the other ends of shaft 1 6211 and shaft 2 6212 facing away from each other are both rotatably connected to the other end of the sleeve rod 61, and the middle ends of the two clamping plates 622 are fixedly connected to shaft 1 6211 and shaft 2 6212 respectively.

[0079] The beneficial effect of adopting the preferred solution in the above embodiment is that when the bidirectional driving member 623 is started, the two clamping plates 622 of the bidirectional driving member 623 rotate relative to each other, and the coaxial shaft 1 6211 and shaft 2 6212 rotate relative to each other.

[0080] Based on the above embodiment, the shaft 1 6211 is in the shape of a stepped shaft, and the small diameter end ( Figure 3 The second shaft 6212 is in the shape of a stepped shaft, and both ends are small-diameter ends. One end is adapted and rotatably connected to the rotation groove of the first shaft 6211, and the other end is rotatably connected to the sleeve rod 61.

[0081] Example 6

[0082] like Figures 2 to 4 On the basis of embodiments 1-5, the sleeve rod 61 includes a fixed rod 611 with one end fixedly connected to the protective tube 5 and a protective box 612 fixedly connected to the other end of the fixed rod 611, the rotating shaft 621 is rotatably connected to the protective box 612, and the bidirectional driving member 623 is located in the protective box 612.

[0083] The beneficial effect of adopting the preferred solution in the above embodiment is that the protection box 612 protects the bidirectional driving member 623 to reduce the probability of contact between the bidirectional driving member 623 and the concrete slurry.

[0084] The bidirectional driving member 623 is installed in the protection box 612 , and its two piston ends are respectively connected to the two fixing seats 6221 .

[0085] Example 7

[0086] like Figures 2 to 4 On the basis of embodiments 1-6, the protective box 612 has a lateral opening to form a mounting groove 6121, and both ends of the rotating shaft 621 are rotatably connected to two opposite groove walls of the mounting groove 6121, and its two sides are respectively abutted against the other two opposite groove walls of the mounting groove 6121.

[0087] The beneficial effect of adopting the preferred solution in the above embodiment is that a mounting window for the rotating shaft 621 is formed by opening the mounting groove 6121, which ensures that the rotating shaft 621 can rotate while reducing the probability of concrete slurry entering by using the side of the rotating shaft 621 to abut against the wall of the mounting groove 6121.

[0088] Example 8

[0089] like Figure 2 and Figure 3 On the basis of Embodiments 1-7, a support rod 63 is fixed in the protection box 612 , one end of the support rod 63 is fixedly connected to the protection box 612 , and the other end is fixedly connected to the bidirectional driving member 623 .

[0090] The beneficial effect of adopting the preferred solution in the above embodiment is that the support rod 63 is used to form the installation foundation of the bidirectional driving member 623. Specifically, the other end of the support rod 63 is fixedly connected to the middle part of the cylinder body of the bidirectional driving member 623.

[0091] Example 9

[0092] like Figure 1 and Figure 2 Based on the embodiments 1-8, the lower end of the protection box 612 is open and is detachably connected to a cover plate 64.

[0093] The beneficial effect of adopting the preferred solution in the above embodiment is that by opening the cover plate 64, the concrete slurry that may enter the protection box 612 can be cleaned, and the installation of the two-way driving member 623 can be facilitated.

[0094] Specifically, one end of the cover plate 64 is rotatably connected to the lower end of the protection box 612 via a rotating shaft, and the other end is fixed by screws and abuts against the lower side of the protection box 612, so that the cover plate 64 forms a sealing effect on the lower opening of the protection box 612 to prevent concrete slurry from entering.

[0095] Example 10

[0096] like Figure 1 and Figure 2 , based on embodiments 1-9, the cross-sectional area of ​​the gravity head 4 gradually decreases from top to bottom.

[0097] The beneficial effect of adopting the preferred solution in the above embodiment is to reduce the downward resistance of the gravity head 4.

[0098] Specifically, the gravity head 4 can be supported by a metal material (such as iron) and has a pointed cone shape, a cone shape or a polygonal cone shape.

[0099] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0100] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0101] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0104] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for controlling the overfilling height of a concrete bored pile, characterized in that: The invention comprises a measuring rope (1), a pressure transmitter (2), a display terminal (3) communicatively connected to the pressure transmitter (2), a protective tube (5) sleeved on the outside of the pressure transmitter (2), a gravity head (4) fixedly connected to the lower end of the protective tube (5), and a balance rod (6) with one end fixedly connected to the protective tube (5), wherein the pressure transmitter (2) is fixedly connected to the gravity head (4), the upper end of the protective tube (5) is fixedly connected to one end of the measuring rope (1), a slurry hole (521) communicating with the pressure transmitter (2) is formed through the side wall of the protective tube (5), and the other end of the balance rod (6) is used for being detachably connected to the outer wall of a conduit (7).

2. A device for controlling the overfilling height of a concrete bored pile according to claim 1, characterized in that: The balancing rod (6) comprises a sleeve rod (61) with one end fixedly connected to the protective tube (5) and a fastener (62) with one end connected to the other end of the sleeve rod (61); the fastener (62) is detachably connected to the outer wall of the conduit (7).

3. A device for controlling the overfilling height of a concrete bored pile according to claim 2, characterized in that: The fastener (62) comprises a rotating shaft (621) with both ends rotatably connected to the other end of the sleeve rod (61), two clamping plates (622) with the middle ends fixedly connected to the rotating shaft (621), and a bidirectional driving member (623) installed on the sleeve rod (61), the two driving ends of the bidirectional driving member (623) are respectively connected to one end of the two clamping plates (622), and the other ends of the two clamping plates (622) are used to clamp the catheter (7).

4. A device for controlling the overfilling height of a concrete bored pile according to claim 3, characterized in that: The other ends of the two clamping plates (622) are bent towards each other in an arc shape.

5. A device for controlling the overfilling height of a concrete bored pile according to claim 3, characterized in that: The rotating shaft (621) comprises a coaxial shaft 1 (6211) and a shaft 2 (6212), one end of the shaft 1 (6211) and one end of the shaft 2 (6212) are rotatably connected to each other, and the other ends of the shaft 1 (6211) and the shaft 2 (6212) facing away from each other are both rotatably connected to the other end of the sleeve rod (61), and the middle ends of the two clamping plates (622) are fixedly connected to the shaft 1 (6211) and the shaft 2 (6212) respectively.

6. A device for controlling the overfilling height of a concrete bored pile according to claim 3, characterized in that: The sleeve rod (61) comprises a fixed rod (611) having one end fixedly connected to the protective tube (5) and a protective box (612) fixedly connected to the other end of the fixed rod (611); the rotating shaft (621) is rotatably connected to the protective box (612), and the bidirectional driving member (623) is located in the protective box (612).

7. A device for controlling the overfilling height of a concrete bored pile according to claim 6, characterized in that: The protection box (612) is opened laterally to form a mounting groove (6121), and the two ends of the rotating shaft (621) are respectively rotatably connected to two opposite groove walls of the mounting groove (6121), and its two sides are respectively abutted against the other two opposite groove walls of the mounting groove (6121).

8. A device for controlling the overfilling height of a concrete bored pile according to claim 6, characterized in that: A support rod (63) is fixed in the protection box (612), one end of the support rod (63) is fixedly connected to the protection box (612), and the other end is fixedly connected to the bidirectional driving member (623).

9. A device for controlling the overfilling height of a concrete bored pile according to claim 6, characterized in that: The lower end of the protection box (612) is open and is detachably connected to a cover plate (64).

10. A device for controlling the overfilling height of a concrete bored pile according to any one of claims 1 to 9, characterized in that: The cross-sectional area of ​​the gravity head (4) gradually decreases from top to bottom.

Images