Grouting sleeve grouting fullness detection device, detection system and detection method

Abstract

The present invention provides a grouting sleeve grouting fullness detection device, detection system and detection method, the detection device includes an air pump, a display tube, and a control volume air chamber, the first chamber and the second chamber of the air pump are connected to the two ends of the display tube through an air pipe, the control volume air chamber is connected to the first chamber, and the second chamber is connected to the grouting sleeve to be tested. The device of the present invention has a reasonable structure, low cost, and is easy to promote; the operation process is simple and time-saving; the result display is intuitive, and the detection efficiency is high; effective detection can be performed before the initial setting or after the final setting of the grouting material.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and in particular relates to a grouting sleeve grouting fullness detection device, a detection system and a detection method. Background Art

[0002] In recent years, with the vigorous development of prefabricated buildings, grouting sleeve connection, as the main connection method for prefabricated building steel components, has been increasingly used in the field of structural engineering. This method connects the steel bars by injecting grouting material into the sleeve connecting the steel bars at both ends. The fullness of the grouting in the sleeve directly affects the strength of the structural connection. During the construction process, the grouting sleeve is often not fully grouted due to improper operation, accidental leakage, etc., which greatly damages the safety of the building structure. Therefore, the grouting fullness detection is of great significance for the quality assurance of prefabricated buildings at this stage.

[0003] At present, some scholars have proposed X-ray detection, pre-buried steel wire drawing, air pressure detection, etc. to solve the problem of grouting sleeve grouting fullness detection. Among them, X-ray detection is difficult to apply in engineering practice due to the complexity of the detection device and the fact that X-ray itself is a kind of ionizing radiation that is highly harmful to the human body.

[0004] The pre-buried steel wire pulling method is to place a steel wire on the sealing plug of the grouting hole of the sleeve to be tested during the grouting process, and then wait for 3 days of grouting curing to perform a steel wire pulling test on the test sleeve. Use a puller to align the pre-buried steel wire and pull the steel wire out completely, record the ultimate pull-out load value, and finally substitute the recorded data into the formula to determine whether the sleeve grouting fullness is qualified. Although the test results of this method can provide an effective reference for the judgment of grouting fullness, the defects of the test method are as follows:

[0005] 1. When there are a large number of test sleeves in the actual project, placing steel wires one by one on the sealing plugs of the grouting holes of each sleeve to be tested during the grouting process will greatly increase the construction workload;

[0006] 2. When conducting wire pulling test, the wire pulling load must be kept continuous and uniform, and the pulling speed must be controlled at 0.15kN / s to 0.50kN / s, which makes the operation difficult;

[0007] 3. The detection process needs to record the ultimate pull-out load value. The test result needs to substitute the recorded data into the formula to calculate whether the grouting fullness is qualified. The detection process is cumbersome;

[0008] 4. The detection sleeve needs to be cured for 3 days after grouting, which is inefficient; and it can only be tested once after the grouting material has finally set. If grouting is required after the test, it will be difficult to carry out subsequent tests.

[0009] The air pressure detection method, such as the grouting sleeve grouting compactness performance detection device and detection method disclosed in the Chinese invention patent application with publication number CN108801843A, includes: a sealing component, a pressurizing device, a pressure container, a pressure indicator, a first valve and a second valve. The patent has certain feasibility in theory for the grouting sleeve grouting compactness performance detection, but the defects of the detection method are as follows:

[0010] 1. The testing process requires recording the pressure value of the pressure vessel every 30 minutes until the pressure value stabilizes or reaches 4 hours later. The operation process is cumbersome and time-consuming;

[0011] 2. The test results need to be calculated through formulas to judge the grouting fullness, which is inefficient;

[0012] 3. The air pressure value measured by the detection device is easily affected by the environment, and the detection error is large.

[0013] The Chinese invention patent application with publication number CN107328921A discloses a device and method for detecting the fullness of grouting material in a grouting sleeve, which includes a barometer, a hydraulic pressure gauge, an automatic metering grouting pump, a pump joint and a control module. Although the device can detect the fullness of the grouting material after grouting to a certain extent and detect the lack of density in time, the defects of the detection device are as follows:

[0014] 1. High-precision instruments such as barometers, hydraulic pressure gauges, automatic metering grouting pumps, and control modules are used, and the installation cost is high;

[0015] 2. Since the device uses a hydraulic pressure gauge to detect the hydraulic pressure value of the grouting material, the invention can only detect the grouting material before the initial setting, and cannot detect the grouting material after the final setting;

[0016] 3. The testing process requires multiple recordings of the volume of grouting material injected and the value of the hydraulic pressure gauge after the grouting material is injected, and the operation process is cumbersome;

[0017] 4. The test results need to be calculated through complex calculation formulas, and the recorded data needs to be substituted multiple times to calculate the grouting fullness (grouting defect volume), which is inefficient.

[0018] Therefore, in the current field of prefabricated buildings, it is urgent to develop an efficient and reliable grouting sleeve grouting fullness detection device. Summary of the invention

[0019] The present invention aims to provide a grouting sleeve grouting fullness detection device, detection system and detection method to solve the technical problems of the existing detection devices or detection methods such as cumbersome operation and low efficiency.

[0020] In order to solve the above technical problems, the specific technical solutions of the present invention are as follows:

[0021] A grouting sleeve grouting fullness detection device, the detection device comprises an air pump, a display tube and a volume control air chamber, and the air pump, the display tube and the volume control air chamber are all connected by air pipes;

[0022] The air pump comprises a first chamber and a second chamber, the first chamber and the second chamber have the same volume, and air holes are provided at the bottom of the first chamber and the second chamber, the bottom of the first chamber is the first air hole, and the bottom of the second chamber is the second air hole; a first piston is provided in each of the first chamber and the second chamber, and a first piston shaft is provided on the upper end surface of the first piston, and the upper end of the first piston shaft is connected through a first piston handle;

[0023] The first air hole is connected to the first air pipe three-way joint through the first air pipe, the second air hole is connected to the second air pipe three-way joint through the second air pipe, and the first air pipe three-way joint and the second air pipe three-way joint are connected through a horizontally arranged display tube; the display tube includes an indicating air pipe and an indicating piston arranged in the indicating air pipe, the middle position of the indicating piston is marked with a piston center line, the middle position of the indicating air pipe is marked with an air pipe center line, and a "√" symbol is marked on the side of the indicating air pipe close to the first air pipe three-way joint with the air pipe center line as the boundary, and an "×" symbol is marked on the side of the indicating air pipe close to the second air pipe three-way joint;

[0024] The third air hole of the volume control air chamber is connected to the first air pipe three-way joint through a third air pipe, the volume control air chamber comprises an air cylinder, the outer wall of the air cylinder is marked with scale, and a piston assembly is arranged in the air cylinder;

[0025] The second air pipe three-way joint is connected to a fourth air pipe.

[0026] Therefore, the detection device of the present invention is connected to the grouting sleeve to be tested through the fourth air pipe, and the volume of the grouting defect allowable value is simulated by using the control volume air chamber, and the difference between the volume of the grouting defect allowable value and the volume of the grouting defect to be tested is displayed on the display tube through the movement of the position indicating piston through the air pump, so as to accurately judge the qualified level of the grouting fullness to be tested. The detection device has a reasonable structure, low cost, and can be reused. Compared with CN108801843A and CN107328921A, it does not need to record data and calculate formulas. It can quickly detect whether the grouting fullness is qualified only by the position of the position indicating piston in the display tube, and the detection object is not limited by the state of the grouting material, and effective detection can be performed before the initial setting or after the final setting of the grouting material.

[0027] Furthermore, the air pump is divided into a first chamber and a second chamber by a partition.

[0028] Furthermore, the piston assembly includes a second piston, a second piston shaft and a second piston handle, the second piston shaft is provided with an external thread, and one end of the gas cylinder is provided with an internal thread hole base that matches the external thread of the second piston shaft. The piston assembly with thread matching can effectively prevent the second piston from moving during the detection process, thereby affecting the detection result.

[0029] Furthermore, a vent hole is provided on the inner threaded hole base. The vent hole can allow air at the end of the cylinder to be discharged freely, ensuring that the second piston moves smoothly in the cylinder.

[0030] Furthermore, an anti-slip structure is provided on the outer surface of the second piston handle along the circumferential direction, and the anti-slip structure can better improve the debugging efficiency.

[0031] Based on the same inventive concept, the present invention also provides a grouting sleeve grouting fullness detection system, the detection system includes a grouting sleeve, a grouting sleeve is provided with a grouting hole, and also includes the grouting sleeve grouting fullness detection device as described above installed on the grouting sleeve, the grouting hole is provided with a first sealing plug, the first sealing plug is provided with a through hole, the axis of the through hole overlaps with the axis of the first sealing plug, the through hole is provided with a second sealing plug, the second sealing plug can block the through hole, the first sealing plug and the second sealing plug are both a rotating body structure, and the rotating body structure can be a cylinder, a cone, a truncated cone, etc. The first sealing plug and the second sealing plug are preferably truncated cone-shaped, the fourth air pipe can be inserted into the through hole and communicated with the grouting hole, the outer diameter of the fourth air pipe matches the inner diameter of the through hole, when the fourth air pipe is inserted into the through hole of the first sealing plug, the fourth air pipe fits with the through hole, and ensures good air tightness at the grouting hole and the through hole.

[0032] Furthermore, the fourth air pipe is connected to the slurry discharge hole to form a closed system, which includes two independent and non-interconnected volume areas, wherein the volume of the first volume area includes the first chamber, the first air pipe, the first air pipe three-way joint, the third air pipe, the volume control air chamber and 1 / 2 of the internal volume of the display tube;

[0033] The volume of the second volume area includes the second chamber, the second air pipe, the second air pipe three-way joint, the fourth air pipe, 1 / 2 of the internal volume of the display tube and the volume of the grouting defect inside the detected grouting sleeve;

[0034] The difference in volume between the first volume area and the second volume area is only between the internal volume of the control volume air chamber and the volume of the grouting defect of the grouting sleeve being measured.

[0035] Based on the same inventive concept, the present invention also provides a method for detecting grouting fullness using the grouting sleeve grouting fullness detection system as described above, comprising the following steps:

[0036] Step 1: pull out the second sealing plug on the first sealing plug, and insert the fourth air pipe into the through hole of the first sealing plug to connect the fourth air pipe with the slurry discharge hole.

[0037] Step 2: Remove the display tube from the first air pipe three-way joint and the second air pipe three-way joint, and adjust the position of the position indicating piston so that the center line of the piston coincides with the center line of the air pipe;

[0038] Step 3: Determine the allowable value of the grouting defect volume according to the construction quality requirements, and rotate the second piston handle to make the internal volume of the control air chamber consistent with the allowable value of the grouting defect volume;

[0039] Step 4: Install the display tube between the first air pipe three-way joint and the second air pipe three-way joint;

[0040] Step 5, pressing down the first piston handle of the air pump so that the first pistons in the first chamber and the second chamber touch the bottom of the chamber at the same time and remain stationary;

[0041] Step six, observe the deviation of the piston centerline position of the indicating piston in the display tube to determine whether the grouting sleeve is fully grouted.

[0042] Furthermore, in step five, when the first pistons in the first chamber and the second chamber both touch the bottom of the chamber, the first volume area and the second volume area are reduced by an equal volume value.

[0043] Furthermore, in the step six, if the measured grouting defect volume of the grouting sleeve is larger than the internal volume of the control volume air chamber, the volume of the second volume area is larger than the first volume area. After completing step five, the pressure in the second volume area will be smaller than that in the first volume area. Therefore, the indicating piston in the display tube will be affected by the pressure difference between the two volume areas and will be offset to the side of the second air pipe three-way joint, that is, the indicating piston will be biased to the side marked with the "×" symbol on the display tube, indicating that the grouting fullness is unqualified; similarly, if the grouting defect volume of the grouting sleeve is smaller than the internal volume of the control volume air chamber, after completing step five, the indicating piston will be biased to the side marked with the "√" symbol on the display tube, indicating that the grouting fullness is qualified.

[0044] The grouting sleeve grouting fullness detection device, detection system and detection method of the present invention have the following advantages:

[0045] 1. No additional work such as data recording is required during the detection process, which is easy to operate and saves time;

[0046] 2. The test results can be quickly judged whether the fullness meets the standard by simply observing the position deviation of the indicating piston on site, which is highly efficient;

[0047] 3. The detection object is not limited by the state of the grouting material, and effective detection can be carried out before the initial setting or after the final setting of the grouting material;

[0048] 4. The detection device has reasonable structure, low cost and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of the grouting sleeve grouting fullness detection system of the present invention;

[0050] Figure 2 It is a schematic diagram of the air pump structure of the present invention;

[0051] Figure 3 It is a schematic diagram of the structure of the display tube of the present invention;

[0052] Figure 4 It is a schematic diagram of the structure of the volume-controlled air chamber of the present invention;

[0053] Figure 5 This is a schematic diagram of the internal threaded hole base structure of the present invention;

[0054] Figure 6 It is a schematic diagram of the first sealing plug structure of the present invention.

[0055] Explanation of the markings in the figure: 1. air pump; 11. first piston handle; 12. first piston shaft; 13. partition; 14. first piston; 16. first chamber; 17. second chamber; 18. first air hole; 19. second air hole; 2. display tube; 21. position indicating piston; 22. piston center line; 23. position indicating air pipe; 24. "√" symbol identification; 25. air pipe center line; 26. "×" symbol identification; 3. volume control air chamber; 31. air cylinder; 32. second piston; 33. second piston shaft; 34. internal threaded hole base; 35. second piston handle; 36. third air hole; 341. internal threaded hole; 342. vent hole; 41. first air pipe; 42. second air pipe; 43. third air pipe; 44. fourth air pipe; 51. first air pipe three-way joint; 52. second air pipe three-way joint; 61. first sealing plug; 62. Second sealing plug; 63. Through hole; 71. Grouting sleeve; 72. Rebar; 73. Grouting material; 74. Fourth sealing plug; 75. Third sealing plug; 76. Grouting hole; 77. Grouting hole. DETAILED DESCRIPTION

[0056] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0057] like Figure 1 As shown, a grouting sleeve grouting fullness detection device of this embodiment includes an air pump 1, a display tube 2 and a volume control air chamber 3, and the air pump 1, the display tube 2 and the volume control air chamber 3 are connected by an air pipe.

[0058] like Figure 2As shown, the air pump 1 is divided into a first chamber 16 and a second chamber 17 by a partition 13. The first chamber 16 and the second chamber 17 have the same volume. The bottoms of the first chamber 16 and the second chamber 17 are both provided with air holes. The bottom of the first chamber 16 is a first air hole 18, and the bottom of the second chamber 17 is a second air hole 19. The first chamber 16 and the second chamber 17 are both provided with a first piston 14. The upper end surface of the first piston 14 is provided with a first piston shaft 12, and the upper end of the first piston shaft 12 is connected through a first piston handle 11.

[0059] like Figure 1 and Figure 2 As shown, the first air hole 18 is connected to the first air pipe three-way joint 51 through the first air pipe 41, and the second air hole 19 is connected to the second air pipe three-way joint 52 through the second air pipe 42. The first air pipe three-way joint 51 and the second air pipe three-way joint 52 are connected through a horizontally arranged display tube 2.

[0060] like Figure 1 and Figure 3 As shown, the display tube 2 includes a positioning air pipe 23 and a positioning piston 21 arranged in the positioning air pipe 23, the middle position of the positioning piston 21 is marked with a piston center line 22, the middle position of the positioning air pipe 23 is marked with an air pipe center line 25, and with the air pipe center line 25 as the boundary, a "√" symbol mark 24 is marked on the side of the positioning air pipe 23 close to the first air pipe three-way joint 51, and an "×" symbol mark 26 is marked on the side of the positioning air pipe 23 close to the second air pipe three-way joint 52.

[0061] like Figure 1 and Figure 4 As shown, the third air hole 36 of the control volume air chamber 3 is connected to the first air pipe three-way joint 51 through the third air pipe 43. The control volume air chamber 3 includes an air cylinder 31, the outer wall of the air cylinder 31 is marked with scales, and a piston assembly is arranged in the air cylinder 31. The piston assembly includes a second piston 32, a second piston shaft 33 and a second piston handle 35. The second piston 32, the second piston shaft 33 and the second piston handle 35 are connected in sequence. The second piston shaft 33 is provided with an external thread. One end of the air cylinder 31 is provided with an internal threaded hole base 34 that matches the external thread of the second piston shaft 33. The internal threaded hole base 34 includes an internal threaded hole 341 arranged at the center of the base, and vent holes 342 arranged on both sides of the internal threaded hole 341. An anti-slip structure is arranged on the outer surface of the second piston handle 35 in the circumferential direction.

[0062] like Figure 1 As shown, the second air pipe three-way joint 52 is also connected to a fourth air pipe 44 , and the fourth air pipe 44 is connected to the grouting sleeve 71 to be tested.

[0063] like Figure 1 and Figure 6 As shown, a grouting sleeve grouting fullness detection system of the present embodiment includes a grouting sleeve 71 and the grouting sleeve grouting fullness detection device as described above, the grouting sleeve 71 includes a grouting hole 76 located at the lower part of the grouting sleeve 71 and a grouting discharge hole 77 located at the upper part of the grouting sleeve 71, two steel bars 72 are inserted into the upper and lower ends of the grouting sleeve 71 respectively and are sealed by a fourth sealing plug 74, the grouting material 73 is poured into the grouting sleeve 71 from the grouting hole 76, and after the grouting material 73 flows out from the grouting discharge hole 77, the grouting hole 77 is completely blocked by the first sealing plug 61, and then the grouting hole 76 is blocked by the third sealing plug 75. Figure 6 As shown, the first sealing plug 61 is provided with a through hole 63, the axis of which overlaps with the axis of the first sealing plug 61, and the through hole 63 is provided with a second sealing plug 62, which can block the through hole 63. The first sealing plug 61 and the second sealing plug 62 are both truncated cone structures.

[0064] When the grouting sleeve grouting fullness detection device of the present invention is installed on the grouting sleeve 71, the second sealing plug 62 on the first sealing plug 61 is first pulled out, and then the fourth air pipe 44 is inserted into the through hole 63 and connected with the slurry discharge hole 77. The outer diameter of the fourth air pipe 44 matches the inner diameter of the through hole 63 to ensure the air tightness of the connection. Therefore, after the fourth air pipe 44 is connected with the slurry discharge hole 77, the detection system constitutes a closed system, which includes two independent and non-interconnected volume areas, wherein the volume of the first volume area includes the first chamber 16, the first air pipe 41, the first air pipe three-way joint 51, the third air pipe 43, the control volume air chamber 3 and 1 / 2 of the internal volume of the display tube 2. The volume of the second volume area includes the second chamber 17, the second air pipe 42, the second air pipe three-way joint 52, the fourth air pipe 44, 1 / 2 of the internal volume of the display tube 2 and the grouting defect volume inside the grouting sleeve 71 to be detected. The difference in volume between the first volume area and the second volume area is only between the internal volume of the control volume air chamber 3 and the grouting defect volume of the grouting sleeve 71 being measured.

[0065] The method for detecting the grouting fullness of a grouting sleeve using the grouting sleeve grouting fullness detection system described in the present embodiment comprises the following steps:

[0066] Step 1: pull out the second sealing plug 62 on the first sealing plug 61 , and insert the fourth air pipe 44 into the through hole 63 of the first sealing plug 61 , so that the fourth air pipe 44 is connected to the slurry discharge hole 77 .

[0067] Step 2: Remove the display tube 2 from the first air pipe three-way joint 51 and the second air pipe three-way joint 52, and adjust the position of the position indicating piston 21 so that the piston center line 22 coincides with the air pipe center line 25.

[0068] Step three, determine the allowable value of the grouting defect volume according to the construction quality requirements, and make the internal volume of the control volume air chamber 3 consistent with the allowable value of the grouting defect volume by rotating the second piston handle.

[0069] Step 4: Install the display tube 2 between the first air pipe three-way joint 51 and the second air pipe three-way joint 52.

[0070] Step 5: Press down the first piston handle 11 of the air pump 1, so that the first pistons 14 in the first chamber 16 and the second chamber 17 touch the bottom of the chamber at the same time and remain motionless. When the first pistons 14 in the first chamber 16 and the second chamber 17 both touch the bottom of the chamber, the first volume area and the second volume area are reduced by the same volume value.

[0071] Step six, observe the position deviation of the piston center line 22 of the indicating piston 21 in the display tube 2 to determine whether the grouting sleeve 71 is fully grouted. If the measured grouting defect volume of the grouting sleeve 71 is larger than the internal volume of the control volume air chamber 3, the volume of the second volume area is larger than the first volume area. After completing step five, the pressure in the second volume area will be smaller than that in the first volume area. Therefore, the indicating piston 21 in the display tube 2 will be affected by the pressure difference between the two volume areas and will be offset to the side of the second air pipe three-way joint 52, that is, the indicating piston 21 is biased to the side of the "×" symbol mark 26 on the display tube 2, indicating that the grouting fullness is unqualified. Similarly, if the grouting defect volume of the grouting sleeve 71 is smaller than the internal volume of the control volume air chamber 3, after completing step five, the indicating piston 21 is biased to the side of the "√" symbol mark 24 on the display tube 2, indicating that the grouting fullness is qualified.

[0072] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A grouting sleeve grouting fullness detection system, comprising a grouting sleeve (71) and a detection device, wherein a grouting hole (77) is provided on the grouting sleeve (71), characterized in that: The detection device comprises an air pump (1), a display tube (2) and a volume control air chamber (3), wherein the air pump (1), the display tube (2) and the volume control air chamber (3) are all connected by air pipes; The air pump (1) comprises a first chamber (16) and a second chamber (17), the first chamber (16) and the second chamber (17) having the same volume, the bottoms of the first chamber (16) and the second chamber (17) both having air holes, the bottom of the first chamber (16) being a first air hole (18), and the bottom of the second chamber (17) being a second air hole (19); a first piston (14) is provided in each of the first chamber (16) and the second chamber (17), the upper end surface of the first piston (14) being provided with a first piston shaft (12), the upper end of the first piston shaft (12) being connected via a first piston handle (11); The first air hole (18) is connected to a first air pipe three-way joint (51) via a first air pipe (41), the second air hole (19) is connected to a second air pipe three-way joint (52) via a second air pipe (42), the first air pipe three-way joint (51) and the second air pipe three-way joint (52) are connected via a horizontally arranged display tube (2); the display tube (2) comprises a position indicating air pipe (23) and a position indicating piston (21) arranged in the position indicating air pipe (23), The middle position of the position indicating piston (21) is marked with a piston center line (22), the middle position of the position indicating air pipe (23) is marked with an air pipe center line (25), and with the air pipe center line (25) as the boundary, a "√" symbol mark (24) is marked on the side of the position indicating air pipe (23) close to the first air pipe three-way joint (51), and a "×" symbol mark (26) is marked on the side of the position indicating air pipe (23) close to the second air pipe three-way joint (52); The third air hole (36) of the volume control air chamber (3) is connected to the first air pipe three-way joint (51) through a third air pipe (43), the volume control air chamber (3) comprises an air cylinder (31), the outer wall of the air cylinder (31) is marked with scale, and a piston assembly is arranged in the air cylinder (31); The second air pipe three-way connector (52) is connected to a fourth air pipe (44); The air pump (1) is divided into a first chamber (16) and a second chamber (17) by a partition (13); The fourth air pipe (44) is connected to the slurry discharge hole (77) to form a closed system, which includes two independent and non-interconnected volume areas, wherein the volume of the first volume area includes the first chamber (16), the first air pipe (41), the first air pipe three-way joint (51), the third air pipe (43), the volume control air chamber (3) and 1 / 2 of the internal volume of the display tube (2); The volume of the second volume area includes the second chamber (17), the second air pipe (42), the second air pipe three-way joint (52), the fourth air pipe (44), 1 / 2 of the internal volume of the display tube (2) and the volume of the grouting defect inside the detected grouting sleeve (71); The difference in volume between the first volume area and the second volume area is only between the internal volume of the volume control air chamber (3) and the volume of the grouting defect of the grouting sleeve (71) being measured; If the measured grouting defect volume of the grouting sleeve (71) is larger than the internal volume of the control volume air chamber (3), the volume of the second volume area is larger than the first volume area; if the grouting defect volume of the grouting sleeve (71) is smaller than the internal volume of the control volume air chamber (3), the volume of the second volume area is smaller than the first volume area.

2. The grouting sleeve grouting fullness detection system according to claim 1 is characterized in that: The piston assembly comprises a second piston (32), a second piston shaft (33) and a second piston handle (35); the second piston shaft (33) is provided with an external thread; one end of the gas cylinder (31) is provided with an internal threaded hole base (34) matching the external thread of the second piston shaft (33).

3. The grouting sleeve grouting fullness detection system according to claim 2 is characterized in that: The internal thread hole base (34) is provided with a vent hole (342).

4. The grouting sleeve grouting fullness detection system according to claim 2 or 3, characterized in that: An anti-slip structure is provided on the outer surface of the second piston handle (35) along the circumferential direction.

5. The grouting sleeve grouting fullness detection system according to claim 4 is characterized in that: The slurry discharge hole (77) is provided with a first sealing plug (61), a through hole (63) is provided on the first sealing plug (61), the axis of the through hole (63) overlaps with the axis of the first sealing plug (61), a second sealing plug (62) is provided on the through hole (63), both the first sealing plug (61) and the second sealing plug (62) are rotating body structures, the fourth air pipe (44) can be inserted into the through hole (63) and communicated with the slurry discharge hole (77), and the outer diameter of the fourth air pipe (44) matches the inner diameter of the through hole (63).

6. A method for detecting grouting fullness using the grouting sleeve grouting fullness detection system as claimed in claim 5, characterized in that: The steps include: Step 1: Pull out the second sealing plug (62) on the first sealing plug (61), and insert the fourth air pipe (44) into the through hole (63) of the first sealing plug (61), so that the fourth air pipe (44) is connected to the pulp discharge hole (77); Step 2: Remove the display tube (2) from the first air pipe three-way joint (51) and the second air pipe three-way joint (52), and adjust the position of the position indicating piston (21) so that the piston center line (22) coincides with the air pipe center line (25); Step 3: determining the allowable value of the grouting defect volume according to the construction quality requirements, and rotating the second piston handle (35) to make the internal volume of the volume control air chamber (3) consistent with the allowable value of the grouting defect volume; Step 4: Install the display tube (2) between the first air pipe three-way connector (51) and the second air pipe three-way connector (52); Step 5: Press down the first piston handle (11) of the air pump (1) so that the first pistons (14) in the first chamber (16) and the second chamber (17) touch the bottom of the chamber at the same time and remain stationary; Step six, observing the position deviation of the piston center line (22) of the position indicating piston (21) in the display tube (2) to determine whether the grouting sleeve (71) is fully grouted.

7. The method for detecting the grouting fullness of a grouting sleeve according to claim 6, characterized in that: In the step five, when the first piston (14) in the first chamber (16) and the second chamber (17) both touch the bottom of the chamber, the first volume area and the second volume area are reduced by an equal volume value.

8. The method for detecting the grouting fullness of a grouting sleeve according to claim 7, characterized in that: In the step six, if the grouting defect volume of the measured grouting sleeve (71) is larger than the internal volume of the control volume air chamber (3), the volume of the second volume area is larger than the first volume area. After completing step five, the pressure in the second volume area will be smaller than that in the first volume area. Therefore, the indicating piston (21) in the display tube (2) will be affected by the pressure difference between the two volume areas and will be offset to the side of the second air pipe three-way joint (52). That is, the indicating piston (21) is offset to the side of the "×" symbol mark (26) on the display tube (2), indicating that the grouting fullness is unqualified. Similarly, if the grouting defect volume of the grouting sleeve (71) is smaller than the internal volume of the control volume air chamber (3), after completing step five, the indicating piston (21) is offset to the side of the "√" symbol mark (24) on the display tube (2), indicating that the grouting fullness is qualified.

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