Pile foundation hole depth measuring device for pile foundation construction

Abstract

The invention discloses a pile foundation hole depth measuring device for pile foundation construction, and relates to the technical field of pile foundation construction, the pile foundation hole depth measuring device comprises a moving frame, the top of the moving frame is fixedly connected with a pay-off mechanism, and the inner wall of the moving frame is fixedly connected with an anti-collision mechanism; according to the device, the sponges and the limiting blocks are arranged on the two sides of the measuring rope, in the releasing process of the measuring rope, the sponges on the two sides wrap the outer surface of the measuring rope under the movement of the limiting blocks, the sliding path of the measuring rope is limited, and the phenomenon that the measuring rope is damaged in the downward releasing process of the measuring rope and the balancing weight is avoided. The problems that in the prior art, due to the fact that the position of the contact portion of a measuring rope and a balancing weight is changed, the position of the balancing weight shakes and swings, the balancing weight makes contact with the interior of a pile foundation hole, and measuring work is inconvenient are solved. According to the device, the two sides of the measuring rope are wrapped and limited through the sponge, and on one hand, due to the fact that the sponge is made of soft materials, the friction force between the sponge and the outer surface of the measuring rope can be reduced;

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation construction, and in particular to a pile foundation hole depth measuring device for pile foundation construction. Background Art

[0002] The pile foundation hole is designed based on the foundation bearing capacity required by the design, and then based on the soil quality of each soil layer given by the survey and design, the soil friction coefficient, etc., and the pile depth and pile diameter are calculated. Therefore, after the pile foundation hole construction is completed, the depth and diameter of the pile foundation hole should be tested to determine whether the pile foundation hole meets the requirements. When measuring the depth of the pile foundation hole, a counterweight block is tied to the bottom of the measuring rope and lowered into the pile foundation hole. When the bottom of the counterweight block contacts the bottom of the pile foundation hole, the depth of the pile foundation hole is determined by observing the scale on the surface of the measuring rope.

[0003] The measuring rope is wound around the outer surface of the rotating drum. Therefore, when the counterweight is tied to the bottom of the measuring rope and lowered into the pile foundation hole, the counterweight may swing, which may further cause the counterweight to touch the inner wall of the pile foundation hole during the swinging, making it inconvenient for the measurement work to proceed smoothly and reducing the measurement accuracy. Therefore, the present invention designs a pile foundation hole depth measuring device for pile foundation construction to solve the above problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention adopts a technical solution to solve the technical problems thereof: a pile foundation hole depth measuring device for pile foundation construction, comprising a mobile frame, a line-releasing mechanism is fixedly connected to the top of the mobile frame, and an anti-collision mechanism is fixedly connected to the inner wall of the mobile frame; the mobile frame facilitates the movement of the overall measuring device on the construction site, and the line-releasing mechanism is used to release the measuring rope.

[0005] The line-releasing mechanism includes a motor, an output shaft of the motor is fixedly connected to a rotating drum, both ends of the rotating drum are rotatably connected to a tripod, the outer surface of the rotating drum is movably connected to a measuring rope, the bottom end of the measuring rope is fixedly connected to a counterweight block, and the outer surface of the measuring rope is slidably connected to a limiting component; the measuring rope contains measurement numbers for the convenience of observers to view; when it is necessary to measure the depth of the pile foundation hole, the rotating drum rotates and releases the measuring rope, and the counterweight block enters the interior of the pile foundation hole as the measuring rope is released; when the pile foundation hole depth measurement is completed, the rotating drum rotates in the opposite direction, pulling the measuring rope and the counterweight block, that is, driving the counterweight block to move up for reset.

[0006] The limiting component includes an annular tube, the inner wall of the annular tube is fixedly connected with a telescopic rod, the end of the telescopic rod away from the annular tube is fixedly connected with a limiting block, the side of the limiting block close to the measuring rope is fixedly connected with a sponge, the side of the limiting block away from the measuring rope is fixedly connected with a water outlet pipe, the upper surface of the limiting block is fixedly connected with an extrusion component, the inner wall of the limiting block is provided with a filter hole, the inner wall of the limiting block is slidably connected with a limiting ring, and the side of the limiting ring close to the water outlet pipe is fixedly connected with an extrusion belt. The sponge wipes and dries the moisture on the surface of the measuring rope and is in sliding contact with the outer surface of the measuring rope. The sponge rope is set to fit the shape of the outer surface of the measuring rope, so as to increase the contact area with the outer surface of the measuring rope. The limiting ring can limit the outside of the measuring rope to a certain extent. The limiting ring and the limiting block are in sliding contact, and there is a sealed contact between the two without any gap.

[0007] Furthermore, the side of the motor close to the rotating drum is fixedly connected to the outer surface of the tripod, the bottom end of the tripod is fixedly connected to the top of the movable frame, the outer surface of the annular cylinder is fixedly connected to the inner wall of the movable frame, and the end of the extrusion belt away from the limit ring is fixedly connected to the inner wall of the limit block.

[0008] Furthermore, the squeezing component includes a fixed plate, the top of the fixed plate is fixedly connected to a fixed cylinder, the bottom of the inner wall of the fixed cylinder is fixedly connected to a telescopic spring, the top of the telescopic spring is fixedly connected to a moving ring, the bottom of the moving ring is fixedly connected to a moving rod, and the bottom of the moving rod is fixedly connected to a squeezing plate. The squeezing plate moves downward into the inner surface of the limit block to squeeze the upper part of the sponge, thereby squeezing out the water inside the sponge. At the same time, the squeezing plate is also set to the same shape as the sponge, so as to increase the contact area with the sponge.

[0009] Furthermore, a pull rope is fixedly connected to the top of the moving ring, and an end of the pull rope away from the moving ring is fixedly connected to a fixing rod.

[0010] Furthermore, the bottom of the fixed plate is fixedly connected to the upper surface of the limit block, the outer surface of the movable ring is slidably connected to the inner wall of the fixed cylinder, the bottom of the movable ring is fixedly connected to the top of the telescopic spring, and the outer surface of the movable rod is slidably connected to the inner wall of the fixed cylinder.

[0011] Furthermore, the anti-collision mechanism includes an electric rod, the output end of the electric rod is fixedly connected to a bending rod, the end of the bending rod away from the electric rod is fixedly connected to a spring belt, the end of the spring belt away from the bending rod is fixedly connected to a fixing ring, the side of the fixing ring away from the spring belt is movably connected to a trigger component, the end of the electric rod away from the bending rod is fixedly connected to the inner wall of the annular cylinder, and the outer surface of the bending rod is slidably connected to the inner wall of the fixing ring. The fixing ring is made of a light material, and the electric rod can push the bending plate to slide along the inner wall of the fixing ring. Under the elasticity of the spring belt, the fixing ring has a tendency to slide to the side away from the telescopic rod, but will not completely lose contact with the outer surface of the bending rod.

[0012] Further, the trigger component includes a scraper ring, the inner wall of the scraper ring is slidably connected with a push rod, one side of the push rod is fixedly connected with a compression spring, the side of the push rod close to the compression spring is fixedly connected with a connecting rope, the outer surface of the connecting rope is slidably connected with a limiting tube, the end of the connecting rope away from the push rod is fixedly connected with a scraper component, the side of the scraper component close to the connecting rope is fixedly connected with a reset spring, and the outer surface of the scraper component is rotatably connected with a fixing bar. The push rod can slide along the inner wall of the scraper ring toward the side close to the connecting rope. During this process, the end of the connecting rope close to the push rod is in a loose state, and the limiting tube limits the sliding of the connecting rope.

[0013] Furthermore, the scraping component includes a scraping box, the inner wall of which is provided with a transverse groove, the inner wall of which is slidably connected with a scraper, one side of which is fixedly connected with a rubber rod, the side of which is away from the rubber rod is fixedly connected with a winding rope, the side of which is away from the scraper is fixedly connected with a winding wheel, and the outer surface of the winding rope close to the winding wheel is slidably connected with a support tube. The scraping box can scrape off the soil attached to the bottom of the counterweight, the winding wheel rolls against the inner surface of the fixed bar, the rubber rod is elastic enough and can be stretched a certain distance, and the support tube limits the position of the winding rope during the sliding process of the winding rope.

[0014] Furthermore, the side of the scraper ring away from the fixed ring is fixedly connected to the inner wall of the annular cylinder, the end of the compression spring away from the push rod is fixedly connected to the inner wall of the scraper ring, the top of the limiting tube is fixedly connected to the outer surface of the scraper ring, the end of the return spring away from the scraper box is fixedly connected to the outer surface of the scraper ring, the side of the fixing strip close to the limiting tube is fixedly connected to the outer surface of the scraper ring, the end of the rubber rod away from the scraper is fixedly connected to the inner wall of the scraper box, both ends of the winding wheel are rotatably connected to the inner wall of the scraper box, and both ends of the support tube are fixedly connected to the inner wall of the scraper box.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. This device is provided with sponges and limit blocks on both sides of the measuring rope. During the release of the measuring rope, the sponges on both sides wrap the outer surface of the measuring rope under the movement of the limit blocks, and limit the sliding path of the measuring rope to avoid the shaking and swinging of the counterweight block due to the change in the position of the contact part between the measuring rope and the counterweight block during the downward release of the measuring rope and the counterweight block, which in turn causes the counterweight block to touch the inside of the pile foundation hole, resulting in inconvenience in measuring work.

[0017] 2. This device wraps and limits both sides of the measuring rope through sponge. On the one hand, since the sponge is made of soft material, it can reduce the friction with the outer surface of the measuring rope and prevent the measuring rope from sliding for a long time, which will cause wear on the outer surface of the measuring rope and wear on the observed values ​​of the outer surface, further affecting the surveyor's observation of the surface values ​​of the measuring rope. On the other hand, the sponge is made of water-absorbing material and can absorb moisture on the outer surface of the measuring rope to prevent the pile foundation hole from being too deep and moisture from existing at the bottom of the hole, which will cause moisture on the surface of the measuring rope and may cause moisture and corrosion damage.

[0018] 3. This device can squeeze out the moisture inside the sponge by moving the squeezing plate up and down, thereby extending the sponge's ability to absorb water on the outer surface of the measuring rope, and avoiding the problem that the sponge absorbs water seriously after wiping the moisture on the outer surface of the measuring rope for many times, resulting in the inability to dry the measuring rope later.

[0019] 4. After the counterweight block completes the measurement of the depth of the pile foundation hole, the outer surface of the counterweight block is limited by the fixing ring and the trigger component. On the one hand, this prevents the counterweight block from shaking due to the movement of the overall measuring device, causing it to touch other objects and cause damage; on the other hand, it is convenient for the subsequent scraping component to scrape off the moist soil attached to the bottom of the counterweight box, and the moist soil at the bottom of the counterweight block will not be unable to be scraped off due to the shaking of the counterweight block.

[0020] 5. The device is provided with a scraper box, through the movement of the scraper box can be scraped off the wet soil attached to the bottom of the counterweight block, to prevent the wet soil from adhering to the bottom of the counterweight block for a long time and eventually becoming dry, resulting in the counterweight block being released to the bottom of the pile foundation hole next time. Due to the presence of soil at the bottom, the bottom of the counterweight block cannot contact the bottom of the pile foundation hole, resulting in inaccurate measurement of the depth of the pile foundation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the wire-releasing mechanism of the present invention;

[0023] Figure 3is a cross-sectional view of the annular cylinder of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the extrusion component of the present invention;

[0025] Figure 5 is a cross-sectional view of the limit block of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the anti-collision mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the trigger component of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the scraping component of the present invention;

[0029] Fig. 9 The present invention Figure 8 A schematic diagram of the enlarged structure at A in the middle;

[0030] Fig.10 The present invention Figure 8 Schematic diagram of the enlarged structure at point B in the middle.

[0031] In the figure: 1, moving frame; 2, line release mechanism; 21, motor; 22, rotating drum; 23, tripod; 24, measuring rope; 25, counterweight; 26, limiting component; 261, annular cylinder; 262, telescopic rod; 263, limiting block; 264, sponge; 265, water outlet pipe; 266, squeezing component; 2661, fixing plate; 2662, fixing cylinder; 2663, telescopic spring; 2664, moving ring; 2665, moving rod; 2666, squeezing plate; 2667, pull rope; 2668, fixing rod; 267, filtering hole ; 268, limit ring; 269, extrusion belt; 3, anti-collision mechanism; 31, electric rod; 32, bending rod; 33, spring belt; 34, fixing ring; 35, trigger component; 351, scraper ring; 352, push rod; 353, compression spring; 354, connecting rope; 355, limit tube; 356, scraper component; 357, reset spring; 358, fixing strip; 3561, scraper box; 3562, horizontal groove; 3563, scraper; 3564, rubber rod; 3565, winding rope; 3566, winding wheel; 3567, support tube. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0033] For example, see Figure 1-Figure 5 The present invention provides a technical solution: a pile foundation hole depth measuring device for pile foundation construction, comprising a mobile frame 1, a line-releasing mechanism 2 is fixedly connected to the top of the mobile frame 1, and an anti-collision mechanism 3 is fixedly connected to the inner wall of the mobile frame 1; the mobile frame 1 facilitates the movement of the overall measuring device on the construction site, and the line-releasing mechanism 2 is used to release the measuring rope 24.

[0034] First, the entire measuring device is moved to the position of the pile foundation hole by the moving frame 1 so that the wire-releasing mechanism 2 is located directly above the pile foundation hole, and then the wire-releasing mechanism 2 is used to measure the depth of the pile foundation hole.

[0035] The line-releasing mechanism 2 comprises a motor 21, the output shaft of the motor 21 is fixedly connected to a rotating drum 22, both ends of the rotating drum 22 are rotatably connected to a tripod 23, the outer surface of the rotating drum 22 is movably connected to a measuring rope 24, the bottom end of the measuring rope 24 is fixedly connected to a counterweight 25, and the outer surface of the measuring rope 24 is slidably connected to a limiting component 26; the measuring rope 24 contains a measurement number for easy viewing by an observer, when it is necessary to measure the depth of the pile foundation hole, the rotating drum 22 rotates and releases the measuring rope 24, and the counterweight 25 enters the interior of the pile foundation hole as the measuring rope 24 is released, and when the pile foundation hole depth measurement is completed, the rotating drum 22 rotates in the opposite direction, pulling the measuring rope 24 and the counterweight 25, that is, driving the counterweight 25 to move upward for resetting. The outer surface of the counterweight 25 is cylindrical, and the upper surface is an inclined surface.

[0036] When the depth of the pile foundation hole needs to be measured, the motor 21 starts and drives the rotating drum 22 to rotate. The rotating drum 22 releases the measuring rope 24 during the rotation. As the released length of the measuring rope 24 becomes longer, the measuring rope 24 and the counterweight block 25 at the bottom continue to move downward and eventually enter the interior of the pile foundation hole until the bottom of the counterweight block 25 contacts the bottom of the inner wall of the pile foundation hole. The motor 21 stops rotating, and outside personnel observe the value on the surface of the measuring rope 24 to determine the depth of the pile foundation hole.

[0037] The limiting component 26 includes an annular cylinder 261, the inner wall of the annular cylinder 261 is fixedly connected with a telescopic rod 262, the end of the telescopic rod 262 away from the annular cylinder 261 is fixedly connected with a limiting block 263, the side of the limiting block 263 close to the measuring rope 24 is fixedly connected with a sponge 264, the side of the limiting block 263 away from the measuring rope 24 is fixedly connected with a water outlet pipe 265, the upper surface of the limiting block 263 is fixedly connected with an extrusion component 266, the inner wall of the limiting block 263 is provided with a filter hole 267, the inner wall of the limiting block 263 is slidably connected with a limiting ring 268, and the side of the limiting ring 268 close to the water outlet pipe 265 is fixedly connected with an extrusion belt 269. The sponge 264 wipes and dries the moisture on the surface of the measuring rope 24, and is in sliding contact with the outer surface of the measuring rope 24. The sponge 264 is configured to fit the shape of the outer surface of the measuring rope 24 to increase the contact area with the outer surface of the measuring rope 24. The limit ring 268 can limit the outside of the measuring rope 24 to a certain extent. The limit ring 268 and the limit block 263 are in sliding contact, and there is a sealed contact between the two without any gap.

[0038] The side of the motor 21 close to the rotating drum 22 is fixedly connected to the outer surface of the tripod 23, the bottom end of the tripod 23 is fixedly connected to the top of the mobile frame 1, the outer surface of the annular cylinder 261 is fixedly connected to the inner wall of the mobile frame 1, and the end of the extrusion belt 269 away from the limiting ring 268 is fixedly connected to the inner wall of the limiting block 263. The extrusion belt 269 is made of elastic material and has the functions of springing and resetting.

[0039] Before the measuring rope 24 and the counterweight 25 move downward, the telescopic rods 262 on both sides of the measuring rope 24 extend, pushing the limit block 263 and the sponge 264 wrapped inside the limit block 263 to move toward one side of the measuring rope 24 until the sponges 264 on both sides of the measuring rope 24 contact the outer surface of the measuring rope 24, and the telescopic rods 262 stop extending.

[0040] When the two sponges 264 wrap the outer surface of the measuring rope 24, the rotating drum 22 can release the measuring rope 24, and then the measuring rope 24 moves downward together with the counterweight 25. On the one hand, the sliding path of the measuring rope 24 is limited by the wrapping of the two sponges 264 to prevent the rotating drum 22 from changing the position of the measuring rope 24 during the process of releasing the measuring rope 24, causing the counterweight 25 at the bottom of the measuring rope 24 to also change and swing, thereby causing the counterweight 25 to touch the inside of the pile foundation hole, resulting in inaccurate subsequent measurements; on the other hand, the sponge 264 is made of soft material, and during the process of the measuring rope 24 sliding down along the inner surface of the sponge 264, the sponge 264 will not cause significant wear on the outer surface of the measuring rope 24, thereby preventing the measuring rope 24 from repeatedly rubbing against the sponge 264 during the process of limiting the measuring rope 24, causing the outer surface of the measuring rope 24 to wear, that is, the value of the outer surface of the measuring rope 24 is blurred, resulting in the observer being unable to accurately see the value of the measuring rope 24, resulting in the problem of being unable to measure the internal depth of the pile foundation hole.

[0041] When the counterweight 25 and the measuring rope 24 complete the measurement of the depth of the pile foundation hole, a certain amount of moisture and moist soil may appear inside the pile foundation hole because the depth of the pile foundation hole may be deep. When there is moisture inside the pile foundation hole and it contacts the measuring rope 24, the measuring rope 24 may become damp and become damaged and corroded. The rotating drum 22 rotates in the opposite direction, driving the measuring rope 24 and the counterweight 25 to reset upward. During the resetting process, the measuring rope 24 still slides along the area wrapped by the two sponges 264. The sponge 264 is a water-absorbing material. During the sliding contact with the outer surface of the measuring rope 24, it can absorb the moisture attached to the outer surface of the measuring rope 24, so that the measuring rope 24 remains relatively dry.

[0042] The squeezing component 266 includes a fixed plate 2661, a fixed cylinder 2662 is fixedly connected to the top of the fixed plate 2661, a telescopic spring 2663 is fixedly connected to the bottom of the inner wall of the fixed cylinder 2662, a moving ring 2664 is fixedly connected to the top of the telescopic spring 2663, a moving rod 2665 is fixedly connected to the bottom of the moving ring 2664, and a squeezing plate 2666 is fixedly connected to the bottom of the moving rod 2665. The squeezing plate 2666 moves downward into the inner surface of the limit block 263, and can squeeze the upper part of the sponge 264, thereby squeezing out the water inside the sponge 264. At the same time, the squeezing plate 2666 is also set to the same shape as the sponge 264, so as to increase the contact area with the sponge 264.

[0043] A pull rope 2667 is fixedly connected to the top of the moving ring 2664 , and a fixing rod 2668 is fixedly connected to one end of the pull rope 2667 away from the moving ring 2664 .

[0044] The bottom of the fixed plate 2661 is fixedly connected to the upper surface of the limit block 263, the outer surface of the movable ring 2664 is slidably connected to the inner wall of the fixed cylinder 2662, the bottom of the movable ring 2664 is fixedly connected to the top of the telescopic spring 2663, and the outer surface of the movable rod 2665 is slidably connected to the inner wall of the fixed cylinder 2662.

[0045] After the sponge 264 has repeatedly absorbed the moisture on the outer surface of the measuring rope 24, the inside of the sponge 264 will become wet, and the ability to dry the outer surface of the measuring rope 24 will gradually decrease. At this time, the telescopic rod 262 contracts and drives the limit block 263 and the sponge 264 to reset. The two sponges 264 are out of contact with the outer surface of the measuring rope 24. When the limit block 263 contracts toward the telescopic rod 262, the limit block 263 drives the fixing plate 2661 and the fixing cylinder 2662 to move toward the fixing rod 2668. During the movement, the fixing ring 34 will get closer and closer to the fixing rod 2668. Therefore, the tension of the pull rope 2667 on the fixing ring 34 becomes smaller, and the pull rope 2667 gradually becomes loose, and the extension of the bottom of the moving ring 2664 is The compression spring 2663 will pull the moving ring 2664 and the moving rod 2665 to slide downward along the inner wall of the fixed cylinder 2662. The moving rod 2665 will drive the extrusion plate 2666 to move downward during the sliding process until the extrusion plate 2666 contacts the sponge 264 on the inner wall of the limit block 263. As the extrusion plate 2666 continues to slide down, the extrusion plate 2666 squeezes the sponge 264 to squeeze out the moisture inside the sponge 264. Most of the squeezed moisture enters the interior of the limit block 263 from the filter hole 267 and is discharged from the water outlet pipe 265. There is a certain distance between the bottom of the extrusion plate 2666 and the upper surface of the sponge 264. The telescopic rod 262 first contracts the limit block 263 and the sponge 264 to a certain distance, so that the sponge 264 is out of contact with the measuring rope 24, and then cooperates with the extrusion plate 2666 to squeeze the moisture in the sponge 264, which can prevent the moisture squeezed out of the sponge 264 from flowing out from the side close to the measuring rope 24. Since the measuring rope 24 is out of contact with the sponge 264, the squeezed moisture will not flow to the outer surface of the measuring rope 24.

[0046] When the sponges 264 on both sides of the measuring rope 24 lose contact with the measuring rope 24, the limiting ring 268 will slide toward the side close to the measuring rope 24 under the elasticity of the extrusion belt 269 until the limiting rings 268 on both sides of the measuring rope 24 touch together, thereby performing a preliminary limiting on the measuring rope 24 to prevent the position of the measuring rope 24 from changing when the sponge 264 no longer limits the measuring rope 24.

[0047] When the water inside the sponge 264 is squeezed out, the sponge 264 becomes dry again. If the sponge 264 is damaged, it can be replaced. If it does not need to be replaced, the telescopic rod 262 is extended again, so that the limit block 263 and the sponge 264 move closer to the side of the measuring rope 24 until the dried sponge 264 is again attached to the outer surface of the measuring rope 24. During the movement of the limit block 263, the two limit rings 268 squeeze each other and finally squeeze into the inside of the limit block 263.

[0048] For example 2, please refer to Figure 1-Figure 10 The present invention provides a technical solution: a pile foundation hole depth measuring device for pile foundation construction, based on the first embodiment, the anti-collision mechanism 3 includes an electric rod 31, the output end of the electric rod 31 is fixedly connected to a bent rod 32, the end of the bent rod 32 away from the electric rod 31 is fixedly connected to a spring belt 33, the end of the spring belt 33 away from the bent rod 32 is fixedly connected to a fixed ring 34, the side of the fixed ring 34 away from the spring belt 33 is movably connected to a trigger component 35, the end of the electric rod 31 away from the bent rod 32 is fixedly connected to the inner wall of the annular cylinder 261, and the outer surface of the bent rod 32 is slidably connected to the inner wall of the fixed ring 34. The fixed ring 34 is made of a relatively light material, and the electric rod 31 can push the bent plate to slide along the inner wall of the fixed ring 34. Under the elasticity of the spring belt 33, the fixed ring 34 has a tendency to slide to the side away from the telescopic rod 262, but will not completely lose contact with the outer surface of the bent rod 32.

[0049] After the counterweight 25 completes the measurement of the depth of the pile foundation hole, since there may be damp soil at the bottom of the pile foundation hole, a certain amount of soil may also be attached to the counterweight 25 after it contacts the bottom of the pile foundation hole, and the soil at the bottom needs to be cleaned. The counterweight 25 is reset under the contraction of the measuring rope 24 until the top of the counterweight 25 contacts the upper surface of the limit block 263 and stops resetting. At this time, the electric rod 31 extends, pushing the bending rod 32 and the fixing ring 34 to move toward the side close to the counterweight 25 until the fixing ring 34 contacts the outer surface of the counterweight 25. When the counterweight 25 is reset upward for a certain distance, the trigger component 35 has a certain sliding contact with the outer surface of the counterweight 25. After the counterweight 25 is reset, the trigger component 35 and the fixing ring 34 are used to wrap and limit the counterweight 25 to prevent the counterweight 25 from shaking due to the movement of the device when the overall measuring device is moving, causing it to touch other objects and cause damage.

[0050] The trigger component 35 includes a scraper ring 351, the inner wall of the scraper ring 351 is slidably connected with a push rod 352, one side of the push rod 352 is fixedly connected with a compression spring 353, the side of the push rod 352 close to the compression spring 353 is fixedly connected with a connecting rope 354, the outer surface of the connecting rope 354 is slidably connected with a limiting tube 355, the end of the connecting rope 354 away from the push rod 352 is fixedly connected with a scraper component 356, the side of the scraper component 356 close to the connecting rope 354 is fixedly connected with a return spring 357, and the outer surface of the scraper component 356 is rotatably connected with a fixing bar 358. The push rod 352 can slide along the inner wall of the scraper ring 351 to the side close to the connecting rope 354. In this process, the end of the connecting rope 354 close to the push rod 352 is in a loose state, and the limiting tube 355 plays a limiting role in the sliding of the connecting rope 354.

[0051] When the fixing ring 34 contacts the scraping ring 351, the fixing ring 34 will no longer move due to resistance, and the bending rod 32 will continue to slide along the inner wall of the fixing ring 34 toward the side close to the pushing rod 352 until the bending rod 32 enters the interior of the scraping ring 351 and pushes the pushing rod 352 inside the scraping ring 351 to slide toward the side close to the connecting rope 354. The pushing rod 352 will squeeze the compression spring 353. At the same time, during the sliding process of the pushing rod 352, the end of the connecting rope 354 close to the pushing rod 352 is in a loose state. Therefore, the scraping component 356 at the other end of the connecting rope 354 is no longer subjected to the tension of the connecting rope 354. The scraping component 356 moves toward the side close to the counterweight block 25 along the inner surface of the fixing strip 358 under the elasticity of the reset spring 357. During the movement, the soil attached to the bottom of the counterweight block 25 can be scraped off.

[0052] The scraping component 356 includes a scraping box 3561, the inner wall of which is provided with a transverse groove 3562, a scraper 3563 is slidably connected to the inner wall of the scraping box 3561, a rubber rod 3564 is fixedly connected to one side of the scraper 3563, a winding rope 3565 is fixedly connected to the side of the scraper 3563 away from the rubber rod 3564, a winding wheel 3566 is fixedly connected to the side of the winding rope 3565 away from the scraper 3563, and a support pipe 3567 is slidably connected to the outer surface of the winding rope 3565 near the winding wheel 3566. The scraping box 3561 can scrape off the soil attached to the bottom of the counterweight 25, the winding wheel 3566 rolls against the inner surface of the fixed bar 358, the rubber rod 3564 is elastic enough and can be stretched a certain distance, and the support pipe 3567 limits the position of the winding rope 3565 during the sliding process of the winding rope 3565. A plurality of winding wheels 3566 are arranged inside the scraper box 3561 , but only the winding wheel 3566 located above the support tube 3567 is functional.

[0053] The side of the scraper ring 351 away from the fixed ring 34 is fixedly connected to the inner wall of the annular cylinder 261, the end of the compression spring 353 away from the push rod 352 is fixedly connected to the inner wall of the scraper ring 351, the top of the limiting tube 355 is fixedly connected to the outer surface of the scraper ring 351, the end of the reset spring 357 away from the scraper box 3561 is fixedly connected to the outer surface of the scraper ring 351, the side of the fixing strip 358 close to the limiting tube 355 is fixedly connected to the outer surface of the scraper ring 351, the end of the rubber rod 3564 away from the scraper plate 3563 is fixedly connected to the inner wall of the scraper box 3561, both ends of the winding wheel 3566 are rotatably connected to the inner wall of the scraper box 3561, and both ends of the support tube 3567 are fixedly connected to the inner wall of the scraper box 3561.

[0054] When the scraping component 356 scrapes off the dirt attached to the bottom of the counterweight 25, the winding wheel 3566 on the inner wall of the scraper box 3561 rolls against the inner surface of the fixing bar 358, thereby driving the scraper box 3561 to move along the inner wall of the fixing bar 358. Only the winding wheel 3566 located above the support tube 3567 has the function of releasing the winding rope 3565. Therefore, during the movement of the scraper box 3561, the winding wheel 3566 rotates continuously along the inner wall of the fixing bar 358 to release the winding rope 3565. As more and more winding ropes 3565 are released, the pulling force of the winding rope 3565 on the scraper 3563 at the other end of the winding rope 3565 becomes smaller and smaller. Therefore, the scraper 3563 moves along the scraper under the pull of the rubber rod 3564. The inner wall of the box 3561 slides toward the side away from the support tube 3567, and the scraper 3563 slides along the inner surface of the transverse groove 3562. The scraper 3563 slides along the outer surface of the scraper box 3561 to scrape off the soil attached to and accumulated on the outer surface of the scraper box 3561, thereby avoiding the presence of soil at the contact part between the scraper box 3561 and the counterweight 25. When the soil on one side of the scraper box 3561 dries, the scraper box 3561 cannot effectively scrape the soil at the bottom of the counterweight 25. When the scraper box 3561 is reset, the winding wheel 3566 rotates in the opposite direction, and the winding rope 3565 can be tightened, so that the winding rope 3565 pulls the scraper 3563 to move and reset along the inner wall of the scraper box 3561.

[0055] The specific working process of the present invention is as follows:

[0056] First, the entire measuring device is moved to the position of the pile foundation hole by the mobile frame 1 so that the counterweight block 25 inside the wire-releasing mechanism 2 is located directly above the pile foundation hole, and then the depth of the pile foundation hole is measured by releasing the winding rope 3565 and the counterweight block 25.

[0057] During the downward movement of the measuring rope 24 and the counterweight 25, the outer surface of the measuring rope 24 is wrapped by the sponge 264 inside the limiting component 26, so that the sliding of the measuring rope 24 can be limited and the friction with the outer surface of the measuring rope 24 can be reduced. Later, during the resetting process of the measuring rope 24, the sliding contact between the sponge 264 and the measuring rope 24 can absorb the moisture that may exist on the outer surface of the measuring rope 24 and properly dry it.

[0058] The moisture inside the sponge 264 is squeezed out by the squeezing plate 2666 inside the squeezing component 266 , so that the sponge 264 can continue to dry the measuring rope 24 .

[0059] The anti-collision mechanism 3 is used to limit the reset counterweight 25 to prevent the counterweight 25 from shaking and touching other objects during the movement of the entire device, or causing the contact end of the measuring rope 24 and the counterweight 25 to shake.

[0060] The scraper box 3561 inside the trigger component 35 can be used to scrape off any wet soil that may be present at the bottom of the counterweight 25, thereby preventing the wet soil from adhering to the bottom of the counterweight 25 and becoming dry after being left uncleaned for a long time. This may cause the counterweight 25 to contact the bottom of the pile foundation hole next time, resulting in inaccurate depth measurement due to the presence of soil at the bottom.

[0061] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A pile foundation hole depth measuring device for pile foundation construction, comprising a mobile frame (1), characterized in that: The top of the mobile frame (1) is fixedly connected to a wire-releasing mechanism (2), and the inner wall of the mobile frame (1) is fixedly connected to an anti-collision mechanism (3); The line-releasing mechanism (2) comprises a motor (21), the output shaft of the motor (21) is fixedly connected to a rotating drum (22), both ends of the rotating drum (22) are rotatably connected to a tripod (23), the outer surface of the rotating drum (22) is movably connected to a measuring rope (24), the bottom end of the measuring rope (24) is fixedly connected to a counterweight (25), and the outer surface of the measuring rope (24) is slidably connected to a limiting component (26); The limiting component (26) comprises an annular cylinder (261), the inner wall of the annular cylinder (261) is fixedly connected to a telescopic rod (262), one end of the telescopic rod (262) away from the annular cylinder (261) is fixedly connected to a limiting block (263), a side of the limiting block (263) close to the measuring rope (24) is fixedly connected to a sponge (264), a side of the limiting block (263) away from the measuring rope (24) is fixedly connected to a water outlet pipe (265), an upper surface of the limiting block (263) is fixedly connected to an extrusion component (266), a filtering hole (267) is provided on the inner wall of the limiting block (263), a limiting ring (268) is slidably connected to the inner wall of the limiting block (263), and a side of the limiting ring (268) close to the water outlet pipe (265) is fixedly connected to an extrusion belt (269).

2. The pile foundation hole depth measuring device for pile foundation construction according to claim 1, characterized in that: The side of the motor (21) close to the rotating drum (22) is fixedly connected to the outer surface of the tripod (23), the bottom end of the tripod (23) is fixedly connected to the top of the moving frame (1), the outer surface of the annular cylinder (261) is fixedly connected to the inner wall of the moving frame (1), and the end of the extrusion belt (269) away from the limiting ring (268) is fixedly connected to the inner wall of the limiting block (263).

3. The pile foundation hole depth measuring device for pile foundation construction according to claim 2, characterized in that: The extrusion component (266) includes a fixed plate (2661), the top end of the fixed plate (2661) is fixedly connected to a fixed tube (2662), the bottom of the inner wall of the fixed tube (2662) is fixedly connected to a telescopic spring (2663), the top end of the telescopic spring (2663) is fixedly connected to a moving ring (2664), the bottom of the moving ring (2664) is fixedly connected to a moving rod (2665), and the bottom end of the moving rod (2665) is fixedly connected to the extrusion plate (2666).

4. The pile foundation hole depth measuring device for pile foundation construction according to claim 3, characterized in that: A pull rope (2667) is fixedly connected to the top of the moving ring (2664), and a fixed rod (2668) is fixedly connected to one end of the pull rope (2667) away from the moving ring (2664).

5. The pile foundation hole depth measuring device for pile foundation construction according to claim 4, characterized in that: The bottom of the fixed plate (2661) is fixedly connected to the upper surface of the limit block (263), the outer surface of the movable ring (2664) is slidably connected to the inner wall of the fixed cylinder (2662), the bottom of the movable ring (2664) is fixedly connected to the top of the telescopic spring (2663), and the outer surface of the movable rod (2665) is slidably connected to the inner wall of the fixed cylinder (2662).

6. The pile foundation hole depth measuring device for pile foundation construction according to claim 1, characterized in that: The anti-collision mechanism (3) comprises an electric rod (31), the output end of the electric rod (31) is fixedly connected to a bending rod (32), one end of the bending rod (32) away from the electric rod (31) is fixedly connected to a spring belt (33), one end of the spring belt (33) away from the bending rod (32) is fixedly connected to a fixing ring (34), a side of the fixing ring (34) away from the spring belt (33) is movably connected to a trigger component (35), one end of the electric rod (31) away from the bending rod (32) is fixedly connected to the inner wall of the annular cylinder (261), and the outer surface of the bending rod (32) is slidably connected to the inner wall of the fixing ring (34).

7. The pile foundation hole depth measuring device for pile foundation construction according to claim 6, characterized in that: The trigger component (35) comprises a scraper ring (351), the inner wall of which is slidably connected to a push rod (352), one side of which is fixedly connected to a compression spring (353), a side of which is fixedly connected to a connecting rope (354) close to the compression spring (353), an outer surface of which is slidably connected to a limiting tube (355), an end of which is fixedly connected to a scraper component (356) at a distance from the push rod (352), a side of which is fixedly connected to a reset spring (357) at a distance from the connecting rope (354), and an outer surface of which is rotatably connected to a fixing bar (358).

8. The pile foundation hole depth measuring device for pile foundation construction according to claim 7, characterized in that: The scraping component (356) includes a scraper box (3561), the inner wall of which is provided with a transverse groove (3562), the inner wall of which is slidably connected to a scraper (3563), one side of which is fixedly connected to a rubber rod (3564), a side of which is away from the rubber rod (3564) is fixedly connected to a winding rope (3565), a side of which is away from the scraper (3563) is fixedly connected to a winding wheel (3566), and the outer surface of the winding rope (3565) on the side close to the winding wheel (3566) is slidably connected to a support tube (3567).

9. The pile foundation hole depth measuring device for pile foundation construction according to claim 8, characterized in that: The side of the scraper ring (351) away from the fixed ring (34) is fixedly connected to the inner wall of the annular cylinder (261); the end of the compression spring (353) away from the push rod (352) is fixedly connected to the inner wall of the scraper ring (351); the top of the limiting tube (355) is fixedly connected to the outer surface of the scraper ring (351); the end of the reset spring (357) away from the scraper box (3561) is fixedly connected to the outer surface of the scraper ring (351); the side of the fixing strip (358) close to the limiting tube (355) is fixedly connected to the outer surface of the scraper ring (351); the end of the rubber rod (3564) away from the scraper plate (3563) is fixedly connected to the inner wall of the scraper box (3561); both ends of the winding wheel (3566) are rotatably connected to the inner wall of the scraper box (3561); and both ends of the support tube (3567) are fixedly connected to the inner wall of the scraper box (3561).

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