A pile hole diameter detection frame for convenient measurement

Abstract

The present invention relates to the field of building technology, and in particular to a pile hole diameter detection frame that is convenient for measurement. The present invention provides a pile hole diameter detection frame that is convenient for measurement and can detect the inner diameter of a pile hole at different depths to improve the accuracy of the detection result. A pile hole diameter detection frame that is convenient for measurement includes a lifting frame; a fixed plate, a fixed plate is slidably connected to the lifting frame; a first fixed frame, a first fixed frame is connected to the right rear side of the fixed plate; a second fixed frame, a second fixed frame is connected to the right side of the top of the fixed plate; a lifting mechanism, a lifting mechanism is connected to the first fixed frame and the right side of the top of the fixed plate. The present invention starts a lifting motor to drive the lifting frame to move downward, and the lifting frame drives the detection tube to move downward into the pile hole. The lifting motor controls the lifting frame to move to different depths in the pile hole, so that the detection tube detects the apertures of different depths in the pile hole. In this way, it can be concluded whether the pile hole diameter is qualified with high accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a pile hole diameter detection frame which is convenient for measuring. Background Art

[0002] In the field of construction, buildings need to dig foundations, that is, pile holes, during construction. Pile holes are used to pour concrete to build concrete piles. Concrete piles can improve the foundation bearing capacity of the building. The strength of the foundation bearing capacity of the building depends on the quality of the concrete pile molding, and the pile hole directly affects the molding quality of the concrete pile. Therefore, before pouring concrete, the inner diameter of the pile hole needs to be tested to ensure the quality of the concrete pile after molding. At present, when testing the pile hole, the inner diameter at the hole mouth of the pile hole is manually tested, and the depth of the pile hole is deep, and it is impossible to ensure whether the hole diameter at the deeper part of the pile hole is consistent with the inner diameter at the hole mouth of the pile hole. In this way, the inner diameter of the pile hole is determined only by the inner diameter at the hole mouth of the pile hole, which is prone to inaccurate detection results, thereby affecting the quality of the concrete pile.

[0003] In summary, it is necessary to develop a pile hole diameter detection frame that can detect the inner diameter of pile holes at different depths and improve the accuracy of the detection results, which is convenient for measurement. Summary of the invention

[0004] In order to overcome the disadvantage in the prior art that only the inner diameter at the hole mouth of the pile hole is measured, and it is impossible to ensure whether the hole diameter at the deeper part of the pile hole meets the standard, thereby affecting the accuracy of the detection result, in view of the shortcomings of the prior art, the present invention provides a pile hole diameter detection frame which can detect the inner diameters of pile holes at different depths, improve the accuracy of the detection result, and is convenient for measurement.

[0005] To achieve the above purpose, the present invention is implemented by the following scheme: a pile hole diameter detection frame for convenient measurement, comprising:

[0006] Lifting frame;

[0007] A fixed plate is slidably connected to the lifting frame;

[0008] A first fixing frame, a first fixing frame is connected to the right rear side of the fixing plate;

[0009] A second fixing frame, the top right side of the fixing plate is connected to the second fixing frame, and the second fixing frame is located on the left side of the first fixing frame;

[0010] A lifting mechanism, wherein the first fixing frame is connected to the right side of the top of the fixing plate, and a lifting mechanism is provided for facilitating the detection of the diameters of the pile holes at different depths, and the lifting mechanism is connected to the lifting frame;

[0011] A detection mechanism is provided between the second fixing frame and the fixing plate for detecting the diameter of the pile hole. The detection mechanism is connected to the lifting frame. When the lifting mechanism is started, the lifting mechanism drives the lifting frame to move downward, and the lifting frame drives the detection mechanism to enter the pile hole. The detection mechanism detects the inner diameters of different depths in the pile hole.

[0012] In one embodiment, the lifting mechanism includes:

[0013] A support frame, the front side of the top of the fixed plate is connected with a support frame;

[0014] A lifting motor is connected inside the support frame;

[0015] A worm is rotatably connected to the upper right side of the fixed plate, and the front side of the worm is connected to the output shaft of the lifting motor;

[0016] A worm wheel, a worm wheel is rotatably connected to the front upper side of the first fixed frame, and the worm is meshed with the worm wheel;

[0017] A lifting screw rod and a threaded connection in the middle of the worm gear are used to drive the lifting frame to move up and down. The bottom of the lifting screw rod is connected to the lifting frame. When the lifting motor is started, the lifting frame is driven by the lifting screw rod to move downward into the pile hole. The lifting frame drives the detection mechanism into the pile hole to detect the inner diameters of different depths in the pile hole.

[0018] In one embodiment, the detection mechanism includes:

[0019] Testing motor: a testing motor is connected to the left wall inside the fixed plate;

[0020] Bevel gear: the output shaft of the detection motor is connected with a bevel gear, the upper part of the second fixed frame is rotatably connected with a bevel gear, and the bevel gears are meshed with each other;

[0021] A rotating rod, the middle part of the right bevel gear is slidably connected with the rotating rod, and the bottom of the rotating rod is rotatably connected with the lower part of the lifting frame;

[0022] A gear rack transmission assembly, wherein the bottom of the rotating rod and the lower part of the lifting frame are connected with a gear rack transmission assembly;

[0023] A fixing rod, with fixing rods connected to the left and right sides of the bottom of the rack and pinion transmission assembly;

[0024] The detection tube and the outer side of the fixed rod are slidably connected with a detection tube for detecting the diameter of the pile hole, and the top of the detection tube is toothed;

[0025] Detection spring: the outside of the fixed rod is covered with a detection spring, and the two ends of the detection spring are respectively connected to the middle of the fixed rod and the detection tube;

[0026] The clamping rod is connected to the middle part of the fixed rod. The outer side of the clamping rod contacts the detection cylinder and is used to limit the detection cylinder. The rotation of the rotating rod drives the gear rack transmission assembly to operate. The gear rack transmission assembly drives the fixed rod, the detection cylinder, the detection spring and the clamping rod to move outward. The detection cylinder contacts the inner wall of the pile hole to detect the inner diameter of the pile hole.

[0027] In one embodiment, a telescopic mechanism is also included to facilitate adjusting the position of the fixing plate, and the telescopic mechanism includes:

[0028] Guide cylinders, both the front and rear sides of the bottom of the fixed plate are connected with guide cylinders;

[0029] Support feet: Support feet are slidably connected to the left and right sides of the guide tube. Pull the support feet outward to unfold them, and move the fixing plate to adjust the position of the fixing plate.

[0030] In one embodiment, a feedback mechanism is also included to facilitate the calculation of the pile hole diameter, and the feedback mechanism includes:

[0031] Moving rod, the outer side of the detection tube is connected with a moving rod;

[0032] The right front side of the fixed plate and the left rear side of the fixed plate are both connected with the slide rail;

[0033] A scale is connected to the top of the slide rail;

[0034] The pointing plate and the sliding rail are all slidably connected with the pointing plate. The tip of the pointing plate points to the scale value on the scale. The pointing plates are slidably connected to the adjacent moving rods. The moving rod and the pointing plate are driven to move outward by the movement of the detection tube. The value on the scale pointed by the pointing plate is the travel of the detection tube, which is used to calculate the diameter of the pile hole.

[0035] In one embodiment, a fixing mechanism for lower limiting the fixing plate is also included, and the fixing mechanism includes:

[0036] Reset rod: reset rods are slidably connected to the left and right sides of the lower part of the guide cylinder;

[0037] The U-shaped limit frame, the rear side of the reset rod on the front side and the front side of the reset rod on the rear side are both connected with a U-shaped limit frame for lower limiting the fixed plate, and the front and rear sides of the lifting frame are both protruding. The lifting frame moves downward to squeeze the U-shaped limit frame to move outward, and the U-shaped limit frame moves outward to press against the supporting foot to limit the position of the fixed plate;

[0038] The limit spring is sleeved on the reset rod, and the two ends of the limit spring are respectively connected with the guide cylinder and the U-shaped limit frame.

[0039] In one of the embodiments, an oblique groove is provided on the inner side of the U-shaped limit frame, so that the lifting frame can squeeze the limit frame and move outward to lock the support leg.

[0040] In one embodiment, a leveling mechanism for adjusting the horizontal state of the fixing plate is also included, and the leveling mechanism includes:

[0041] Leveling screw rods, the lower part of the support feet are all threadedly connected with leveling screw rods;

[0042] The rotating wheel and the top of the leveling screw are both connected to a rotating wheel. By rotating the rotating wheel, the rotating wheel drives the leveling screw to rotate, and the leveling screw drives the supporting foot to move up and down to adjust the horizontal state of the fixed plate;

[0043] The swivel support foot and the bottom of the leveling screw rod are both rotatably connected with the swivel support foot.

[0044] The present invention has at least one of the following advantages: the present invention starts the lifting motor to drive the lifting frame to move downward, and the lifting frame drives the detection tube to move downward into the pile hole, and controls the lifting frame to move to different depths in the pile hole through the lifting motor, so that the detection tube detects the apertures at different depths in the pile hole, so that it can be concluded whether the aperture of the pile hole is qualified with high accuracy; the lifting foot is pulled outward and then the fixing plate is pushed to move left and right, so that the lifting frame can be located at the center of the pile hole, so that the accuracy of the pile hole diameter measured by the detection tube can be improved, and the position of the fixing plate can be conveniently adjusted, without the need to manually move the fixing plate multiple times for adjustment, thereby reducing the difficulty of adjustment; the detection tube moves outward to drive the moving rod and the pointing plate to move outward, and when the detection tube stops moving, the pointing plate points to the The value on the scale is the distance the detection tube moves. Then the distance between the outer walls of the two detection tubes is added to the distance the two detection tubes move. In this way, the aperture in the pile hole can be obtained, which reduces the measurement difficulty. The lifting frame moves downward, and the lifting frame squeezes the U-shaped limit frame to move outward. The U-shaped limit frame moves outward to resist the supporting foot. In this way, the fixed plate can be positioned to improve the stability of the fixed plate and prevent the fixed plate from moving due to external factors, thereby causing the lifting frame to deviate from the center of the pile hole and affect the detection result of the aperture. By rotating the rotating wheel, the rotating wheel drives the leveling screw to rotate, and the leveling screw drives the supporting foot to move up and down. In this way, the height of the supporting foot can be adjusted, so that the fixed plate remains in a horizontal state to avoid affecting the detection result of the aperture. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0046] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention.

[0047] Figure 3 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the present invention.

[0048] Figure 4 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present invention.

[0049] Figure 5 It is a partial three-dimensional structural schematic diagram of the detection mechanism of the present invention.

[0050] Figure 6 It is a schematic diagram of the three-dimensional structure of the telescopic mechanism of the present invention.

[0051] Figure 7 It is a schematic diagram of the three-dimensional structure of the feedback mechanism of the present invention.

[0052] Figure 8 It is a partial three-dimensional structural schematic diagram of the feedback mechanism of the present invention.

[0053] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention from the first viewing angle.

[0054] Fig.10 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention from a second viewing angle.

[0055] Fig.11 It is a schematic diagram of the three-dimensional structure of the leveling mechanism of the present invention.

[0056] Fig.12 It is a schematic diagram of the cross-sectional three-dimensional structure of the leveling mechanism of the present invention.

[0057] Marked in the figure: 1-lifting frame, 2-fixed plate, 21-first fixed frame, 22-second fixed frame, 3-lifting mechanism, 31-support frame, 32-lifting motor, 33-worm, 34-worm wheel, 35-lifting screw, 4-detection mechanism, 41-detection motor, 42-bevel gear, 43-rotating rod, 44-gear rack transmission assembly, 45-fixed rod, 46-detection cylinder, 47-detection spring, 48-clamp rod, 5-telescopic mechanism, 51-guide cylinder, 52-support foot, 6-feedback mechanism, 61-moving rod, 62-pointing plate, 63-slide rail, 64-scale, 7-fixing mechanism, 71-U-shaped limit frame, 72-reset rod, 73-limit spring, 8-leveling mechanism, 81-rotating wheel, 82-leveling screw, 83-rotating support foot. DETAILED DESCRIPTION

[0058] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0059] Example 1

[0060] A pile hole diameter detection frame that is convenient for measurement, such as Figure 1-Figure 5As shown, it includes a lifting frame 1, a fixing plate 2, a first fixing frame 21, a second fixing frame 22, a lifting mechanism 3 and a detection mechanism 4. The lifting frame 1 is slidably connected to the fixing plate 2. The first fixing frame 21 is welded to the right rear side of the fixing plate 2. The second fixing frame 22 is welded to the right side of the top of the fixing plate 2. The second fixing frame 22 is located on the left side of the first fixing frame 21. The first fixing frame 21 and the right side of the top of the fixing plate 2 are connected with the lifting mechanism 3. The lifting mechanism 3 is connected to the lifting frame 1. The lifting mechanism 3 is convenient for detecting the apertures of pile holes of different depths. A detection mechanism 4 is arranged between the second fixing frame 22 and the fixing plate 2. The detection mechanism 4 is connected to the lifting frame 1. The detection mechanism 4 is used to The aperture of the pile hole is detected. The lifting mechanism 3 includes a support frame 31, a lifting motor 32, a worm 33, a worm wheel 34 and a lifting screw 35. The support frame 31 is welded to the front side of the top of the fixed plate 2. The lifting motor 32 is fixed inside the support frame 31 by bolts. The worm 33 is rotatably connected to the upper right side of the fixed plate 2. The front side of the worm 33 is connected to the output shaft of the lifting motor 32 through a coupling. The worm wheel 34 is rotatably connected to the upper front side of the first fixed frame 21. The worm 33 is meshed with the worm wheel 34. The middle part of the worm wheel 34 is threadedly connected with the lifting screw 35. The lifting screw 35 is used to drive the lifting frame 1 to move up and down. The bottom of the lifting screw 35 is welded to the lifting frame 1. The mechanism 4 includes a detection motor 41, a bevel gear 42, a rotating rod 43, a gear rack transmission assembly 44, a fixed rod 45, a detection tube 46, a detection spring 47 and a clamping rod 48. The detection motor 41 is welded to the left wall inside the fixed plate 2. The output shaft of the detection motor 41 is connected to the bevel gear 42. The upper part of the second fixed frame 22 is rotatably connected to the bevel gear 42. The two bevel gears 42 are meshed with each other. The middle part of the right bevel gear 42 is slidably connected to the rotating rod 43. The bottom of the rotating rod 43 is rotatably connected to the lower part of the lifting frame 1. The bottom of the rotating rod 43 is connected to the lower part of the lifting frame 1. The gear rack transmission assembly 44 is composed of a gear and two gears. The two racks slide on the front and rear sides of the lower part of the lifting frame 1 respectively, the gear is connected to the bottom of the rotating rod 43, the gear is meshed with the two racks, and fixed rods 45 are welded on the left and right sides of the bottom of the gear and rack transmission assembly 44. The outer sides of the two fixed rods 45 are slidably connected with detection cylinders 46, and the detection cylinders 46 are used to detect the aperture of the pile hole. The tops of the two detection cylinders 46 are both toothed, and the outer sides of the two fixed rods 45 are sleeved with detection springs 47. The two ends of the detection spring 47 are respectively connected to the middle of the fixed rod 45 and the detection cylinder 46. The middle parts of the two fixed rods 45 are welded with clamping rods 48, and the outer sides of the clamping rods 48 are in contact with the detection cylinder 46 for limiting the detection cylinder 46.

[0061] When in use, the lifting frame 1 is placed above the pile hole to be measured, and the lifting motor 32 is started. The output shaft of the lifting motor 32 drives the worm 33 to rotate, the worm 33 drives the worm wheel 34 to rotate, the worm wheel 34 drives the lifting screw 35 to move downward, the lifting screw 35 drives the lifting frame 1 to move downward into the pile hole, the lifting frame 1 drives the gear rack transmission assembly 44, the fixing rod 45 and the detection tube 46 to move downward into the pile hole, and after descending to a certain depth, the detection motor 41 is started, the output shaft of the detection motor 41 drives the bevel gear 42 to rotate, the bevel gear 42 drives the rotating rod 43 to rotate, and the rotating rod 43 drives the gear rack transmission assembly 44, the fixing rod 45 and the detection tube 46 to move downward into the pile hole. The gear rack transmission assembly 44 operates, so that the gear rack transmission assembly 44 moves and expands to drive the fixed rod 45 and the detection tube 46 to move outward, so that the detection tube 46 moves outward to contact the inner wall of the pile hole. When one of the detection tubes 46 contacts the inner wall of the pile hole and the other detection tube 46 has not yet contacted the inner wall of the pile hole, the gear rack transmission assembly 44 continues to operate, driving the fixed rod 45 to continue to move outward, and the detection tube 46 that has contacted the inner wall of the pile hole stops moving, and the corresponding detection spring 47 is compressed, and the fixed rod 45 drives the clamping rod 48 to continue to move outward. Since the top of the detection tube 46 is toothed, Therefore, the clamping rod 48 can clamp the detection tube 46 to limit the detection tube 46. When the other detection tube 46 moves outward to contact the inner wall of the pile hole, the detection motor 41 is turned off. In this way, the diameter of the pile hole can be measured, and the staff does not need to adjust the position of the lifting frame 1 many times, so that the lifting frame 1 is located in the center of the pile hole, which reduces the difficulty of detection. Then, the lifting motor 32 is started again, and the output shaft of the lifting motor 32 is controlled to reverse, the lifting screw 35 drives the worm 33 to reverse, the worm 33 drives the worm wheel 34 to reverse, the worm wheel 34 drives the lifting screw 35 to reverse, and the lifting screw 35 drives the lifting frame 1 to move upward to repeat. The detection tube 46 is moved upwards out of the pile hole, thereby driving the gear rack transmission assembly 44, the fixing rod 45 and the detection tube 46 to move upwards out of the pile hole. Under the limiting action of the clamping rod 48, when the fixing rod 45 and the detection tube 46 move upwards out of the pile hole, the detection tube 46 will not move outwards and reset under the reset action of the detection spring 47, so that the staff can measure the distance between the outer walls of the two detection tubes 46. In this way, the diameter of the pile hole can be obtained, which is convenient for the staff to judge whether the aperture of the pile hole is qualified. Then, the detection tube 46 can be manually pulled outwards to reset. When it is necessary to detect the inner diameters at different depths, the lifting frame 1 can be controlled to descend to different depths.

[0062] Example 2

[0063] On the basis of Example 1, Figure 1 and Figure 6As shown, it also includes a telescopic mechanism 5, which is convenient for adjusting the position of the fixed plate 2. The telescopic mechanism 5 includes a guide cylinder 51 and a support foot 52. The guide cylinders 51 are welded on both the front and rear sides of the bottom of the fixed plate 2, and the support feet 52 are slidably connected to the left and right sides of the two guide cylinders 51. The support feet 52 are supported above the pile hole, and the support feet 52 are pulled outward so that the lifting frame 1 is located on the center line of the pile hole. Then the staff adjusts the position of the fixed plate 2 and the lifting frame 1 according to the pile hole, pushes the fixed plate 2 left and right, and the fixed plate 2 drives the guide cylinder 51 to move left and right, so that the lifting frame 1 can be located at the center of the pile hole. In this way, it is convenient for the detection cylinder 46 to measure the diameter of the pile hole, which can improve the accuracy of the detection, and it is convenient to adjust the position of the fixed plate 2. There is no need to manually move the fixed plate 2 for adjustment many times, which reduces the difficulty of adjustment. After the detection is completed, the support feet 52 are pushed inward to reset.

[0064] like Figure 1 , Figure 7 and Figure 8 As shown, a feedback mechanism 6 is also included. The feedback mechanism 6 is convenient for calculating the diameter of the pile hole. The feedback mechanism 6 includes a moving rod 61, a pointing plate 62, a slide rail 63 and a scale 64. The outer sides of the two detection tubes 46 are welded with moving rods 61, the right front side of the fixed plate 2 and the left rear side of the fixed plate 2 are welded with slide rails 63, the tops of the two slide rails 63 are connected to the scale 64, the insides of the two slide rails 63 are slidably connected with pointing plates 62, the tip of the pointing plate 62 points to the scale value on the scale 64, and the two pointing plates 62 are slidably connected to the adjacent moving rods 61. When the detection tube 46 moves outward, it drives the moving rod 61 to move outward, and the moving rod 61 drives the pointing plate 62 to move outward. When the detection tube 46 moves outward until it contacts the inner wall of the pile hole, it stops moving, and the moving rod 61 also stops moving. Then the staff checks the value on the scale 64 pointed by the pointing plate 62, records the value, and then adds the initial distance between the outer walls of the two detection tubes 46 to the distance moved by the two detection tubes 46. In this way, the aperture in the pile hole can be obtained. After the detection is completed, when the detection tube 46 moves inward to reset, it drives the moving rod 61 and the pointing plate 62 to move inward to reset.

[0065] like Figure 1 , Fig. 9 and Fig.10As shown, a fixing mechanism 7 is also included, and the fixing mechanism 7 is used to limit the fixing plate 2 downward. The fixing mechanism 7 includes a U-shaped limit frame 71, a reset rod 72 and a limit spring 73. The left and right sides of the lower part of the two guide cylinders 51 are slidably connected with the reset rod 72, and the rear sides of the two reset rods 72 on the front side and the front sides of the two reset rods 72 on the rear side are welded with U-shaped limit frames 71. The U-shaped limit frames 71 are used to limit the fixing plate 2 downward. The inner sides of the two U-shaped limit frames 71 are provided with oblique grooves, and the front and rear sides of the lifting frame 1 are both protruding. The lifting frame 1 moves downward to squeeze the U-shaped limit frame 71 and moves outward to clamp the supporting foot 52. The four reset rods 72 are all covered with limit springs 73, and the two ends of the limit spring 73 are respectively connected to the guide cylinder 51 and the U-shaped limit frame 71. When the position of the lifting frame 1 is adjusted and moves downward, the lifting frame 1 contacts the U-shaped limiting frame 71. Since an oblique groove is provided on the inner side of the U-shaped limiting frame 71, the lifting frame 1 can squeeze the U-shaped limiting frame 71 to move outward, and the U-shaped limiting frame 71 drives the reset rod 72 to move outward. The limiting spring 73 is compressed, and the U-shaped limiting frame 71 moves outward to resist the supporting foot 52, so that the fixing plate 2 can be positioned to avoid the fixing plate 2 moving due to external factors when the lifting frame 1 moves downward after the position adjustment of the fixing plate 2 is completed, thereby causing the lifting frame 1 to deviate from the center of the pile hole. In this way, the stability of the fixing plate 2 can be improved to prevent the detection result of the aperture from being affected. When the lifting frame 1 moves upward and resets, the limiting spring 73 resets, driving the U-shaped limiting frame 71 and the reset rod 72 to move inward and reset.

[0066] like Figure 1 , Fig.11 and Fig.12 As shown, it also includes a leveling mechanism 8, which is used to adjust the horizontal state of the fixed plate 2. The leveling mechanism 8 includes a rotating wheel 81, a leveling screw 82 and a rotating support foot 83. The lower parts of the four support feet 52 are all threadedly connected with the leveling screw 82, the tops of the four leveling screws 82 are all welded with a rotating wheel 81, and the bottoms of the four leveling screws 82 are all rotatably connected with the rotating support foot 83. When the hole diameter of the pile hole is detected, since the pile hole is generally drilled in the mud, the ground of the mud is generally uneven. At this time, the staff can rotate the rotating wheel 81, the rotating wheel 81 drives the leveling screw 82 to rotate, and the leveling screw 82 drives the support foot 52 to move up and down. In this way, the height of the support foot 52 can be adjusted, so that the fixed plate 2 can maintain a horizontal state to avoid affecting the detection result of the hole diameter.

[0067] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A pile hole diameter detection frame for convenient measurement, characterized in that it includes: Lifting frame (1); A fixed plate (2), the lifting frame (1) being slidably connected to the fixed plate (2); A first fixing frame (21), the right rear side of the fixing plate (2) being connected to the first fixing frame (21); A second fixing frame (22), the second fixing frame (22) being connected to the right side of the top of the fixing plate (2), and the second fixing frame (22) being located on the left side of the first fixing frame (21); A lifting mechanism (3), wherein the first fixing frame (21) and the fixing plate (2) are connected to a lifting mechanism (3) on the right side of the top thereof for facilitating detection of the diameters of pile holes at different depths, and the lifting mechanism (3) is connected to the lifting frame (1); A detection mechanism (4) is provided between the second fixing frame (22) and the fixing plate (2) for detecting the diameter of the pile hole. The detection mechanism (4) is connected to the lifting frame (1). The lifting mechanism (3) is started, the lifting mechanism (3) drives the lifting frame (1) to move downward, the lifting frame (1) drives the detection mechanism (4) to enter the pile hole, and the detection mechanism (4) detects the inner diameters of different depths in the pile hole. The lifting mechanism (3) comprises: A support frame (31), the top front side of the fixing plate (2) being connected to the support frame (31); A lifting motor (32), the support frame (31) is internally connected with the lifting motor (32); A worm (33), the upper right side of the fixed plate (2) is rotatably connected to the worm (33), and the front side of the worm (33) is connected to the output shaft of the lifting motor (32); A worm wheel (34), the front upper side of the first fixed frame (21) is rotatably connected to the worm wheel (34), and the worm (33) is meshed with the worm wheel (34); The lifting screw rod (35) is threadedly connected to the middle of the worm wheel (34) to drive the lifting frame (1) to move up and down. The bottom of the lifting screw rod (35) is connected to the lifting frame (1). The lifting motor (32) is started to drive the lifting frame (1) to move downward into the pile hole through the lifting screw rod (35). The lifting frame (1) drives the detection mechanism (4) to enter the pile hole to detect the inner diameters of different depths in the pile hole. Testing agencies (4) include: A detection motor (41), the inner left wall of the fixed plate (2) is connected with a detection motor (41); A bevel gear (42), the output shaft of the detection motor (41) is connected to the bevel gear (42), the upper part of the second fixed frame (22) is rotatably connected to the bevel gear (42), and the bevel gears (42) are meshed with each other; A rotating rod (43), the middle of the right bevel gear (42) is slidably connected with the rotating rod (43), and the bottom of the rotating rod (43) is rotatably connected to the lower part of the lifting frame (1); A gear rack transmission assembly (44), wherein the bottom of the rotating rod (43) and the lower part of the lifting frame (1) are connected with the gear rack transmission assembly (44); A fixing rod (45), the fixing rods (45) are connected to both left and right sides of the bottom of the rack and pinion transmission assembly (44); The detection tube (46) and the fixing rod (45) are both slidably connected to the outer side thereof with a detection tube (46) for detecting the diameter of the pile hole, and the top of the detection tube (46) is toothed; A detection spring (47), the outer side of the fixed rod (45) is covered with a detection spring (47), and the two ends of the detection spring (47) are respectively connected to the middle part of the fixed rod (45) and the detection tube (46); The clamping rod (48) and the middle part of the fixed rod (45) are both connected with the clamping rod (48). The outer side of the clamping rod (48) contacts the detection tube (46) and is used to limit the detection tube (46). The rotating rod (43) rotates to drive the gear rack transmission assembly (44) to operate. The gear rack transmission assembly (44) drives the fixed rod (45), the detection tube (46), the detection spring (47) and the clamping rod (48) to move outward. The detection tube (46) contacts the inner wall of the pile hole to detect the inner diameter of the pile hole. It also includes a telescopic mechanism (5) for conveniently adjusting the position of the fixed plate (2), and the telescopic mechanism (5) includes: A guide cylinder (51), the front and rear sides of the bottom of the fixing plate (2) are both connected to the guide cylinder (51); Supporting feet (52), both left and right sides of the guide tube (51) are slidably connected with supporting feet (52), the supporting feet (52) are pulled outward to unfold, and the fixing plate (2) is moved to adjust the position of the fixing plate (2); It also includes a feedback mechanism (6) for facilitating the calculation of the pile hole diameter, and the feedback mechanism (6) includes: A moving rod (61), the outer side of the detection tube (46) is connected to the moving rod (61); A slide rail (63), the right front side of the fixed plate (2) and the left rear side of the fixed plate (2) are both connected to the slide rail (63); A scale (64) is connected to the top of the slide rail (63); The pointing plate (62) and the slide rail (63) are both slidably connected with the pointing plate (62). The tip of the pointing plate (62) points to the scale value on the scale (64). The pointing plate (62) is slidably connected to a nearby moving rod (61). The moving rod (61) and the pointing plate (62) are driven to move outward by the detection tube (46). The value on the scale (64) pointed by the pointing plate (62) is the travel of the detection tube (46), which is used to calculate the hole diameter of the pile hole.

2. A pile hole diameter detection frame for convenient measurement as claimed in claim 1, characterized in that: It also includes a fixing mechanism (7) for lower limiting the fixing plate (2), and the fixing mechanism (7) includes: A reset rod (72), the left and right sides of the lower part of the guide cylinder (51) are slidably connected with the reset rod (72); The U-shaped limit frame (71), the rear side of the front reset rod (72) and the front side of the rear reset rod (72) are both connected to the U-shaped limit frame (71) for lower limiting the fixed plate (2), and the front and rear sides of the lifting frame (1) are both protruding. The lifting frame (1) moves downward to squeeze the U-shaped limit frame (71) to move outward, and the U-shaped limit frame (71) moves outward to abut against the support foot (52), thereby limiting the position of the fixed plate (2); The limit spring (73) is sleeved on the reset rod (72), and the two ends of the limit spring (73) are respectively connected to the guide cylinder (51) and the U-shaped limit frame (71).

3. A pile hole diameter detection frame for convenient measurement as claimed in claim 2, characterized in that: The inner side of the U-shaped limiting frame (71) is provided with an oblique groove, which facilitates the lifting frame (1) to squeeze the limiting frame (71) and move outward to lock the support foot (52).

4. A pile hole diameter detection frame for convenient measurement as claimed in claim 3, characterized in that: It also includes a leveling mechanism (8) for adjusting the horizontal state of the fixing plate (2), and the leveling mechanism (8) includes: A leveling screw rod (82), the lower part of the support foot (52) is threadedly connected with the leveling screw rod (82); The rotating wheel (81) and the top of the leveling screw rod (82) are both connected to the rotating wheel (81). By rotating the rotating wheel (81), the rotating wheel (81) drives the leveling screw rod (82) to rotate, and the leveling screw rod (82) drives the supporting foot (52) to move up and down, thereby adjusting the horizontal state of the fixed plate (2); The rotating support foot (83) is rotatably connected to the bottom of the leveling screw rod (82).

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