Pile foundation concrete pouring over-pouring height measuring device

Abstract

The utility model provides a pile foundation concrete pouring over-pouring height measuring device which comprises an installation frame, a winding drum mechanism arranged on the installation frame, a coil spring arranged in the winding drum mechanism, a measuring rope with one end fixed and wound on the winding drum mechanism and a fixing piece connected with a reinforcement cage. The fixed part is arranged on the mounting frame, the floating ball mechanism is movably connected to the fixed part and connected with the other end of the measuring rope, the ratchet wheel is fixedly connected to the winding drum mechanism, and the alarm mechanism is arranged on the mounting frame and used for being matched with the ratchet wheel. The pile hole concrete surface ascends to push the floating ball mechanism to ascend, and then under the action of the coil spring, the winding drum measuring rope is driven to be shortened, the winding drum mechanism and the ratchet wheel are driven to rotate, so that the alarm mechanism matched with the ratchet wheel sends out a signal to remind constructors of the concrete pouring condition, and accurate control over the over-pouring height is achieved. Tediousness and uncertainty of manual judgment are avoided, and construction efficiency and construction quality of the pile foundation are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering quality detection, and in particular relates to a pile foundation concrete pouring over-pouring height measuring device. Background Art

[0002] During the construction of pile foundation, in order to compensate for the instability of the hole wall caused by geological complexity, prevent the mixing of concrete and mud, compensate for construction errors, ensure the quality and elevation accuracy of the pile head, and prevent soil disturbance, so as to ensure the structural integrity, strength and long-term stability of the pile foundation, it is usually necessary to set the top elevation of the cast-in-place pile 0.5 to 1 meter higher than the design elevation.

[0003] The traditional method for controlling the over-pouring height of concrete on the top of pile foundation is: during the concrete pouring process, a measuring rope with a weight attached is manually placed into the pile foundation casing, and whether the elevation has been reached is determined by judging the pulling force exerted by the weight on the human hand, or a mark is pre-set on the steel cage, and pouring is stopped when the concrete surface rises to the marked position. These methods all rely on the instant judgment and operation of on-site workers, and have certain subjectivity and uncertainty, which can easily lead to inaccurate control of over-pouring. If the over-pouring is too little, it is easy to cause the concrete density on the pile top to be insufficient to form a loose floating slurry layer, the pile top elevation to be lower than the design requirements, and mud inclusions in the pile body, which in turn affects the bearing capacity, durability and stability of the pile foundation. If the over-pouring is too much, it will cause waste of concrete, and bring great inconvenience to the subsequent removal of the pile head, increasing construction costs. Summary of the invention

[0004] The utility model aims to provide a pile foundation concrete pouring over-pouring height measuring device to solve the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A pile foundation concrete pouring over-pouring height measuring device comprises a mounting frame, a drum mechanism arranged on the mounting frame, a coil spring arranged inside the drum mechanism, a measuring rope with one end fixed and wound around the drum mechanism, a fixing piece connected to the steel cage, a float mechanism movably connected to the fixing piece and connected to the other end of the measuring rope, a ratchet fixedly connected to the drum mechanism, and an alarm mechanism arranged on the mounting frame for cooperating with the ratchet.

[0007] Preferably, the mounting frame is U-shaped, and the reel mechanism includes: a mounting shaft whose two ends are fixedly connected to the side walls of the mounting frame, and a reel that is rotatably sleeved on the mounting shaft and is hollow inside, the inner end of the coil spring is fixed on the mounting shaft, and the outer end is fixed on the inner wall of the reel, and the ratchet is rotatably sleeved on the mounting shaft and fixedly connected to the outer wall of the reel.

[0008] Preferably, the alarm mechanism includes: a sliding sleeve located above the ratchet, a sliding rod slidably arranged in the sliding sleeve, a limiting member movably arranged between the sliding sleeve and the sliding rod and used to fix the sliding rod on the sliding sleeve, a knocking plate arranged above the sliding rod, a fixing plate connected to the mounting frame and the lower end face of which is connected to the knocking plate through a first spring, the lower end of the sliding rod is conical, when the bottom end of the sliding rod is located at the top of the ratchet teeth, the upper end of the sliding rod is in contact with the knocking plate, and the first spring is compressed, and when the bottom end of the sliding rod is located at the bottom of the ratchet teeth, the upper end of the sliding rod is away from the knocking plate, and the first spring is in a natural state.

[0009] Preferably, the limiting member comprises: a first limiting hole transversely penetrating the slide rod, a second limiting hole transversely penetrating the slide sleeve, and a limiting rod which can be inserted into the first limiting hole and the second limiting hole in sequence.

[0010] Preferably, a knocking block is respectively provided at the top of the knocking plate and the bottom of the fixed plate, and the second spring of the knocking block located at the bottom of the fixed plate is connected to the fixed plate. When the bottom end of the sliding rod is located at the top of the ratchet teeth, the two knocking blocks are in contact, the second spring is compressed, the two knocking blocks are connected and moved away from each other, and the second spring is in a natural state.

[0011] Preferably, a slide groove is provided on the mounting frame, a sliding block is slidably connected in the slide groove, and a ratchet pawl matched with the ratchet wheel is elastically connected to the sliding block.

[0012] Preferably, the fixing member includes: an internal hollow mounting cylinder, a mounting rod in the shape of "┌" arranged on the outer side wall of the mounting cylinder, a fixing groove opened on the mounting cylinder, a moving block slidably connected to the fixing groove, a third spring fixedly connected between the moving block and the fixing groove, and a fixing block connected to one end of the moving block toward the mounting rod, the fixing block is semicircular in shape, and the arc surface of the fixing block is in contact with the mounting rod.

[0013] Preferably, the float mechanism includes: a sliding rod sliding through the bottom end of the mounting tube, a limit plate arranged inside the mounting tube and connected to the top end of the sliding rod, a threaded cap connected to the bottom end of the sliding rod, and a float with an open top, a hollow interior and threadedly connected to the threaded cap, wherein the limit plate is fixedly connected to the measuring rope.

[0014] Preferably, it also includes an auxiliary wheel mechanism, which includes an auxiliary rod connected to the mounting frame, a U-shaped auxiliary frame connected to the end of the auxiliary rod, and an auxiliary wheel rotatably connected to the auxiliary frame, and the measuring rope is placed on the auxiliary wheel.

[0015] Preferably, fixing ears are provided on both sides of the mounting frame, and fixing cones which can be inserted into the soil are provided on the fixing ears.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] 1. The utility model installs the float mechanism at the pouring height defined by the steel cage through a fixing piece, so that when the concrete surface of the pile hole rises to this position, the float mechanism can be stimulated to rise, and then the drum mechanism and the ratchet are driven to rotate under the action of the restoring force of the measuring rope and the coil spring, and finally the alarm mechanism matched with the ratchet sends a signal to remind the construction personnel of the pouring of concrete, so as to realize the precise control of the over-pouring height, avoid the tediousness and uncertainty of manual judgment, significantly improve the accuracy and real-time performance of the measurement, and effectively improve the construction efficiency and quality of the pile foundation;

[0018] 2. The utility model uses the buoyancy to make the float mechanism rise, which in turn shortens the measuring rope. Then, driven by the coil spring, the drum and the ratchet connected to the drum start to rotate. The rotation of the ratchet drives the slide bar to continuously hit the knocking plate up and down to make a sound, which can reflect the height change of the concrete liquid level in real time, remind the construction personnel to pay attention to the pouring of concrete, help to accurately control the over-pouring height, avoid quality problems caused by insufficient or excessive over-pouring, ensure the construction quality of the pile foundation, and reduce the project cost;

[0019] 3. The utility model provides knocking blocks at the upper end of the knocking plate and the lower end of the fixed plate respectively. The interaction of the double knocking blocks not only enhances the triggering force of the alarm, but also improves the clarity and reliability of the alarm, further ensuring the quality and safety of the pile foundation construction;

[0020] The utility model has the advantages of simple structure, convenient operation and easy installation and use at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a pile foundation concrete pouring over-pouring height measuring device;

[0023] Figure 2 A schematic diagram of the disassembly of a drum mechanism of a pile foundation concrete pouring over-pouring height measuring device;

[0024] Figure 3It is a structural schematic diagram of one side of a mounting frame of a pile foundation concrete pouring over-pouring height measuring device;

[0025] Figure 4 A schematic diagram of the structure of the fixing parts and the floating ball mechanism of a pile foundation concrete pouring over-pouring height measuring device;

[0026] Figure markings: 1-mounting frame, 2-reel mechanism, 3-reel spring, 4-measuring rope, 5-fixing piece, 6-floating ball mechanism, 7-alarm mechanism, 8-ratchet, 9-mounting shaft, 10-reel, 11-sleeve, 12-slide rod, 13-knocking plate, 14-first spring, 15-fixing plate, 16-first limiting hole, 17-second limiting hole, 18-limiting rod, 19-knocking block, 20-second spring, 21-slide groove, 22-slider, 23-ratchet, 24-mounting cylinder, 25-mounting rod, 26-fixing groove, 27-moving block, 28-third spring, 29-fixed block, 30-sliding rod, 31-limiting plate, 32-floating ball, 33-threaded cap, 34-auxiliary rod, 35-U-shaped auxiliary frame, 36-auxiliary wheel, 37-fixing ear, 38-fixing cone. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0030] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] Example 1

[0035] A pile foundation concrete pouring over-pouring height measuring device comprises a mounting frame 1, a drum mechanism 2 arranged on the mounting frame 1, a coil spring 3 arranged inside the drum mechanism 2, a measuring rope 4 fixed at one end and wound around the drum mechanism 2, a fixing member 5 connected to the steel cage, a float mechanism 6 movably connected to the fixing member 5 and connected to the other end of the measuring rope 4, a ratchet 8 fixedly connected to the drum mechanism 2, and an alarm mechanism 7 slidably arranged on the mounting frame 1 and used to cooperate with the ratchet 8.

[0036] It should be noted that the staff needs to determine the design elevation of the pile top in advance and mark the overfilling position on the steel cage within the specification requirements; when the float mechanism 6 floats up, the rebound force of the coil spring 3 should be much smaller than the force pulling up the float mechanism 6.

[0037] In practice, the device is first installed near the pile hole and fixed on the ground through the mounting frame 1. One end of the measuring rope 4 is wound around the drum mechanism 2, and the other end is connected to the float mechanism 6. The float mechanism 6 is connected to the steel cage through the fixing piece 5, so that the float mechanism 6 is located at the over-pouring position marked inside the steel cage; then the steel cage is lowered into the pile hole, and the measuring rope 4 is pulled out from the drum mechanism 2, and under the action of the resilience of the coil spring 3, the measuring rope 4 is always in a taut state. When the concrete is poured to the position of the float mechanism 6, the float mechanism 6 floats up due to the buoyancy. , the measuring rope 4 is shortened, and the drum mechanism 2 rotates, thereby driving the ratchet 8 connected to the drum mechanism 2 to rotate, so that the alarm mechanism 7 matched with the ratchet 8 sends a signal to remind the construction personnel of the pouring of concrete, thereby realizing accurate control of the over-pouring height, avoiding quality problems and waste of resources caused by insufficient or excessive over-pouring, avoiding the tediousness and uncertainty of manual judgment, significantly improving the accuracy and real-time nature of the measurement, and effectively improving the construction efficiency and quality of the pile foundation; finally, the real-time monitoring of the concrete height in the cast-in-place pile pipe is realized.

[0038] Example 2

[0039] On the basis of Embodiment 1, a slide groove 21 is provided on the mounting frame, a slider 22 is slidably connected in the slide groove 21 , and a ratchet pawl 23 adapted to the ratchet wheel 8 is elastically connected to the slider 22 .

[0040] In this embodiment, before the steel cage is lowered, the measuring rope 4 can be pulled out of the drum mechanism 2 to a certain length so that the steel cage can be placed more smoothly. The cooperation of the pawl 23 and the ratchet 8 can prevent the drum mechanism 2 from rotating in the direction of recovering the measuring rope 4, thereby preventing the pulled-out measuring rope 4 from being rewound by the drum mechanism 2 under the action of the rebound force of the coil spring 3; when the steel cage has been lowered into the pile hole and the concrete pouring work is carried out, the pawl 23 can be disengaged from the ratchet 8 by sliding the slider 22 in the sliding groove 21, thereby releasing the restriction on the drum mechanism 2, so that the measurement is always in a taut state.

[0041] Example 3

[0042] On the basis of Example 1, the mounting frame 1 is U-shaped, and the reel mechanism 2 includes: a mounting shaft 9 whose two ends are fixedly connected to the side wall of the mounting frame 1, and a reel 10 which is rotatably sleeved on the mounting shaft 9 and hollow inside, the inner end of the coil spring 3 is fixed on the mounting shaft 9, and the outer end is fixed on the inner wall of the reel 10, and the ratchet 8 is rotatably sleeved on the mounting shaft 9 and fixedly connected to the outer wall of the reel 10.

[0043] The alarm mechanism 7 includes: a sliding sleeve 11 located above the ratchet 8, a sliding rod 12 slidably arranged in the sliding sleeve 11, a limiting member movably arranged between the sliding sleeve 11 and the sliding rod 12 and used to fix the sliding rod 12 on the sliding sleeve 11, a knocking plate 13 arranged above the sliding rod 12, and a fixing plate 15 connected to the mounting frame 1 and the lower end surface of which is connected to the knocking plate 13 through a first spring 14. The lower end of the sliding rod 12 is conical. When the bottom end of the sliding rod 12 is located at the top of the teeth of the ratchet 8, the upper end of the sliding rod 12 is in contact with the knocking plate 13, and the first spring 14 is compressed. When the bottom end of the sliding rod 12 is located at the bottom of the teeth of the ratchet 8, the upper end of the sliding rod 12 is away from the knocking plate 13, and the first spring 14 is in a natural state.

[0044] In this embodiment, as the concrete liquid level rises, when it reaches the position of the float mechanism 6, the float mechanism 6 rises due to the buoyancy, which in turn causes the measuring rope 4 to shorten. The reel 10 starts to rotate under the drive of the coil spring 3, and drives the ratchet 8 connected to it to rotate together. When the teeth of the ratchet 8 contact the conical bottom end of the slide rod 12, the slide rod 12 continues to move up and down under the push of the teeth of the ratchet 8. During the upward movement of the slide rod 12, its upper end quickly hits the knocking plate 13 to make a sound and compress the first spring 14. As the teeth of the ratchet 8 continue to rotate, the slide rod 12 will fall rapidly, its upper end will leave the knocking plate 13, and the first spring 14 will recover rapidly. By repeating the above process, the slide rod 12 continues to move up and down, and the sound of hitting the knocking plate 13 reminds the construction personnel that the current concrete pouring height is about to reach the preset over-pouring position, which effectively improves the accuracy and real-time performance of the measurement, helps to accurately control the over-pouring height, and ensures the construction quality of the pile foundation.

[0045] Example 4

[0046] On the basis of Example 3, the limiting member includes: a first limiting hole 16 disposed transversely through the slide rod 12, a second limiting hole 17 disposed transversely through the slide sleeve 11, and a limiting rod 18 which can be inserted into the first limiting hole 16 and the second limiting hole 17 in sequence.

[0047] During the lowering process of the steel cage, the measuring rope 4 is continuously pulled out from the drum mechanism 2, and the drum 10 is always in a rotating state. Therefore, in order to avoid the alarm mechanism 7 making a sound due to the rotation of the ratchet 8 when the measuring rope 4 is pulled out, the limit rod 18 is inserted into the first limit hole 16 and the second limit hole 17 to fix the position of the slide bar 12 so that the slide bar 12 is always located above the ratchet 8 and does not contact it.

[0048] Example 5

[0049] On the basis of Example 3, a knocking block 19 is respectively provided at the top of the knocking plate 13 and the bottom of the fixed plate 15. The knocking block 19 at the bottom of the fixed plate 15 is connected to the fixed plate 15 by a second spring 20. When the bottom end of the sliding rod 12 is located at the top of the teeth of the ratchet 8, the two knocking blocks 19 are in contact with each other, and the second spring 20 is compressed. The two knocking blocks 19 are connected and moved away from each other, and the second spring 20 is in a natural state.

[0050] In this embodiment, when the sliding rod 12 moves upward and quickly hits the knocking plate 13 to make a sound, the knocking block 19 at the upper end of the knocking plate 13 will also hit the knocking block 19 at the bottom end of the fixed plate 15 to make a sound, and the second spring 20 is compressed. As the ratchet 8 teeth continue to rotate, the sliding rod 12 will fall rapidly, and the two knocking blocks 19 will move away from each other. The second spring 20 returns to its natural state, and the interaction between the two knocking blocks 19 not only enhances the triggering force of the alarm, but also improves the clarity and reliability of the alarm, further ensuring the quality and safety of pile foundation construction.

[0051] Example 6

[0052] On the basis of Example 1, the fixing member 5 includes: an internal hollow mounting cylinder 24, a mounting rod 25 in the shape of “┌” arranged on the outer wall of the mounting cylinder 24, a fixing groove 26 opened on the mounting cylinder 24, a moving block 27 slidingly connected to the fixing groove 26, a third spring 28 fixedly connected between the moving block 27 and the fixing groove 26, and a fixing block 29 connected to one end of the moving block 27 facing the mounting rod 25, the fixing block 29 is semicircular in shape, and the arc surface of the fixing block 29 is in contact with the mounting rod 25.

[0053] In this embodiment, when the fixing member 5 is installed on the steel cage, the installation rod 25 is first inserted into the hoop of the steel cage until the fixing block 29 contacts the hoop. The hoop squeezes the fixing block 29 and then pushes the moving block 27 to move in the fixing groove 26 to squeeze the third spring 28 until the fixing block 29 moves to the bottom of the hoop. The fixing block 29 is no longer subjected to the squeezing force. Under the action of the rebound force of the bottom single spring, the moving block 27 moves outward, so that the arc surface of the fixing block 29 contacts the installation rod 25 again.

[0054] Thereby, the installation tube 24 is fixedly clamped on the steel cage. After the pouring is completed, the measuring rope 4 is pulled upward with force, so that the fixing block 29 contacts and is squeezed by the hoop, so that the installation tube 24 is separated from the steel cage and taken out, further improving the convenience of using the device.

[0055] Example 7

[0056] On the basis of Example 1, the float mechanism 6 includes: a sliding rod 30 that slides through the bottom end of the mounting tube 24, a limiting plate 31 arranged inside the mounting tube 24 and connected to the top end of the sliding rod 30, a threaded cap 33 connected to the bottom end of the sliding rod 30, and a float 32 that is open at the top, hollow inside and threadedly connected to the threaded cap 33, and the limiting plate 31 is fixedly connected to the measuring rope 4.

[0057] In this embodiment, the float 32 needs to be calibrated before the pile foundation construction, and fillers need to be added into the float 32 through the top opening of the float 32, so that the overall density of the float 32 is greater than the density of the mud and slightly less than the density of the concrete, so as to ensure that the float 32 can sink into the lower part of the mud and reach the concrete when it is put into the pile hole, thereby making the measurement value more accurate. The calibrated float 32 is threadedly connected to the threaded cap 33 to complete the installation; when the concrete surface of the pile foundation reaches the position of the float 32, the float 32 floats up and lifts the sliding rod 30 due to the buoyancy, so that the limit plate 31 rises in the installation tube 24, This causes the measuring rope 4 to shorten, and the drum mechanism 2 starts to rotate under the drive of the coil spring 3, and drives the ratchet 8 connected to it to rotate together, triggering the alarm mechanism 7 to sound an alarm, thereby reminding the staff that the current concrete pouring height is about to reach the preset over-pouring position. When the limit plate 31 rises to the top of the installation cylinder 24, the float 32 no longer rises, the measuring rope 4 stops shortening, the drum mechanism 2 and the ratchet 8 stop rotating, and the alarm mechanism 7 stops sounding the alarm. The construction personnel can immediately stop pouring the concrete, reducing the tediousness and uncertainty of manual judgment and effectively improving the construction efficiency and quality of the pile foundation.

[0058] Example 8

[0059] On the basis of Example 1, it also includes an auxiliary wheel 36 mechanism, which includes: an auxiliary rod 34 connected to the mounting frame 1, a U-shaped auxiliary frame 35 connected to the end of the telescopic rod, and an auxiliary wheel 36 rotatably connected to the auxiliary frame, and the measuring rope 4 is placed on the auxiliary wheel 36.

[0060] The mounting frame 1 is provided with fixing ears 37 on both sides, and the fixing ears 37 are provided with fixing cones 38 that can be inserted into the soil.

[0061] In this embodiment, the measuring rope 4 is passed around the auxiliary wheel 36 and then lowered into the pile foundation hole, which not only provides a stable guide for the measuring rope 4 and ensures that it remains stable during the stretching and recovery process, but also avoids friction between the measuring rope 4 and the edge of the pile mouth, thereby extending the service life of the measuring rope 4; and the setting of the fixed cone 38 ensures the stability of the measuring device during the measurement process, further improving the accuracy of the measurement.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described by referring to the preferred embodiments of the utility model, those skilled in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A pile foundation concrete pouring overfilling height measuring device, characterized in that: The invention comprises a mounting frame (1), a drum mechanism (2) arranged on the mounting frame (1), a coil spring (3) arranged inside the drum mechanism (2), a measuring rope (4) with one end fixed and wound around the drum mechanism (2), a fixing member (5) connected to a steel cage, a floating ball mechanism (6) movably connected to the fixing member (5) and connected to the other end of the measuring rope (4), a ratchet (8) fixedly connected to the drum mechanism (2), and an alarm mechanism (7) arranged on the mounting frame (1) and used to cooperate with the ratchet (8).

2. A pile foundation concrete pouring overfilling height measuring device according to claim 1, characterized in that: The mounting frame (1) is U-shaped, and the reel mechanism (2) comprises: a mounting shaft (9) whose two ends are fixedly connected to the side wall of the mounting frame (1), and a reel (10) which is rotatably sleeved on the mounting shaft (9) and has a hollow interior; the inner end of the coil spring (3) is fixed to the mounting shaft (9) and the outer end is fixed to the inner wall of the reel (10); the ratchet (8) is rotatably sleeved on the mounting shaft (9) and fixedly connected to the outer wall of the reel (10).

3. A pile foundation concrete pouring overfilling height measuring device according to claim 2, characterized in that: The alarm mechanism (7) comprises: a sliding sleeve (11) located above the ratchet (8), a sliding rod (12) slidably arranged in the sliding sleeve (11), a limiting member movably arranged between the sliding sleeve (11) and the sliding rod (12) and used to fix the sliding rod (12) on the sliding sleeve (11), a knocking plate (13) arranged above the sliding rod (12), a first spring (14) connected to the mounting frame (1) and having a lower end surface connected to the ratchet (8) by the first spring (14). The fixed plate (15) is connected to the knocking plate (13), and the lower end of the slide rod (12) is conical. When the lower end of the slide rod (12) is located at the top of the ratchet (8) tooth, the upper end of the slide rod (12) contacts the knocking plate (13), and the first spring (14) is compressed. When the lower end of the slide rod (12) is located at the bottom of the ratchet (8) tooth, the upper end of the slide rod (12) is away from the knocking plate (13), and the first spring (14) is in a natural state.

4. A pile foundation concrete pouring overfilling height measuring device according to claim 3, characterized in that: The limiting member comprises: a first limiting hole (16) which is arranged to penetrate the sliding rod (12) transversely, a second limiting hole (17) which is arranged to penetrate the sliding sleeve (11) transversely, and a limiting rod (18) which can be inserted into the first limiting hole (16) and the second limiting hole (17) in sequence.

5. A pile foundation concrete pouring overfilling height measuring device according to claim 3, characterized in that: A knocking block (19) is respectively provided at the top of the knocking plate (13) and the bottom of the fixed plate (15). The knocking block (19) at the bottom of the fixed plate (15) is connected to the fixed plate (15) by a second spring (20). When the bottom end of the sliding rod (12) is located at the top of the teeth of the ratchet wheel (8), the two knocking blocks (19) are in contact with each other, the second spring (20) is compressed, the two knocking blocks (19) are in contact and move away from each other, and the second spring (20) is in a natural state.

6. A pile foundation concrete pouring overfilling height measuring device according to claim 2, characterized in that: The mounting frame (1) is provided with a slide groove (21), a slider (22) is slidably connected in the slide groove (21), and a ratchet pawl (23) adapted to the ratchet wheel (8) is elastically connected to the slider (22).

7. A pile foundation concrete pouring overfilling height measuring device according to claim 2, characterized in that: The fixing member (5) comprises: an internally hollow mounting cylinder (24), a mounting rod (25) in the shape of a "┌" and arranged on the outer side wall of the mounting cylinder (24), a fixing groove (26) provided on the mounting cylinder (24), a moving block (27) slidably connected to the fixing groove (26), a third spring (28) fixedly connected between the moving block (27) and the fixing groove (26), and a fixing block (29) connected to one end of the moving block (27) facing the mounting rod (25), the fixing block (29) being in a semicircular shape, and the arc surface of the fixing block (29) being in contact with the mounting rod (25).

8. A pile foundation concrete pouring overfilling height measuring device according to claim 7, characterized in that: The float mechanism (6) comprises: a sliding rod (30) slidingly passing through the bottom end of the mounting tube (24), a limiting plate (31) arranged inside the mounting tube (24) and connected to the top end of the sliding rod (30), a threaded cap (33) connected to the bottom end of the sliding rod (30), and a floating ball (32) with an open top, a hollow interior and threadedly connected to the threaded cap (33), wherein the limiting plate (31) is fixedly connected to the measuring rope (4).

9. A pile foundation concrete pouring overfilling height measuring device according to claim 1, characterized in that: The invention also comprises an auxiliary wheel (36) mechanism, wherein the auxiliary wheel (36) mechanism comprises an auxiliary rod (34) connected to the mounting frame (1), a U-shaped auxiliary frame (35) connected to the end of the auxiliary rod (34), and an auxiliary wheel (36) rotatably connected to the auxiliary frame, wherein the measuring rope (4) is mounted on the auxiliary wheel (36).

10. A pile foundation concrete pouring overfilling height measuring device according to claim 1, characterized in that: The mounting frame (1) is provided with fixing ears (37) on both sides, and the fixing ears (37) are provided with fixing cones (38) that can be inserted into the soil.

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