Bridge pier column cofferdam construction device

Abstract

The invention relates to the technical field of pile sinking construction, and particularly discloses a bridge pier column cofferdam construction device which comprises a static pile driver, a pile driver holder and a perpendicularity monitoring mechanism, the pile driver holder is slidably arranged in an inner cavity of the static pile driver through a hydraulic system, and the perpendicularity monitoring mechanism is arranged at the top end of the pile driver holder. The device effectively solves the problem of measurement errors caused by springback of a pile body in static pile pressing construction in a karst area, the accuracy of pile sinking depth data is remarkably improved, the problem of distortion of a manual marking method and stroke calculation of a holder is avoided, meanwhile, the levelness of the static press is dynamically monitored, it is ensured that the pile sinking perpendicularity meets the standard requirement, and the construction efficiency is improved. The pile body is prevented from deviating, inclining or breaking, the pile foundation bearing capacity and the structural safety are improved, the construction rework cost and the construction period delay risk are reduced, and more reliable technical guarantee is provided for karst area foundation engineering construction.

Description

Technical Field

[0001] The invention relates to the technical field of pile driving construction, in particular to a bridge pier cofferdam construction device. Background Art

[0002] In the construction of bridge pier foundations, static pile driving technology is widely used in engineering construction in complex geological conditions such as karst areas due to its advantages such as low noise, low pollution and high construction efficiency. However, the geological structure of karst areas is complex, and there are adverse geological phenomena such as caves and cracks. As a result, the pile body is easily affected by the stratum stress and rebounds during the pile driving process, which seriously affects the accuracy of the pile driving depth measurement. Traditional pile driving depth measurement methods mainly rely on manually marking the position of the pile body in the ground or calculating the stroke of the pile driver clamp. Such methods do not consider the impact of pile body rebound on the measurement results, resulting in a deviation between the measured depth and the actual depth of the ground, which in turn affects the reliability of the pile foundation bearing capacity calculation and engineering design; In addition, during the construction process, static pile drivers are prone to horizontal and vertical deviations due to factors such as uneven foundation settlement and equipment vibration. If the verticality of the pile driver is not monitored and adjusted in time, the pile body may be displaced, tilted, or even broken, seriously threatening the safety of the bridge structure. Existing verticality monitoring methods are mostly manual periodic measurements or single-point static monitoring, which cannot achieve real-time tracking of the dynamic posture of the pile driver and are difficult to meet high-precision construction requirements; In summary, the existing technology has two major technical bottlenecks in the construction of static pile driving in karst areas: first, there is a lack of an effective pile body rebound compensation mechanism, which leads to distortion in the measurement of pile driving depth; second, the verticality monitoring accuracy is insufficient, and the posture change of the pile driver cannot be dynamically fed back. Therefore, it is necessary to develop a protective device that can monitor the pile driving depth in real time, automatically compensate for the rebound error, and dynamically adjust the verticality of the pile driver to improve the quality and safety of pile foundation construction in karst areas. Summary of the invention

[0003] The purpose of the present invention is to provide a bridge pier cofferdam construction device to solve the problem in the prior art that the measured pile sinking depth deviates from the actual value, and errors are easily generated in the horizontality and verticality as the construction proceeds.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge pier cofferdam construction device, comprising: a static pile driver, a pile driver clamp, a verticality monitoring mechanism, a warning light and a driving depth monitoring mechanism, wherein the pile driver clamp is slidably arranged in the inner cavity of the static pile driver through a hydraulic system, the verticality monitoring mechanism is arranged at the top end of the pile driver clamp, the number of the warning lights is four, and the four warning lights are respectively arranged at the four corners of the top end of the pile driver clamp, the driving depth monitoring mechanism is arranged at the bottom end of the static pile driver, and the position of the driving depth monitoring mechanism corresponds to the position of the pile driver clamp.

[0005] Preferably, the perpendicularity monitoring mechanism includes: brackets, rotating rods, swing rods, counterweight balls, and offset angle monitoring components. There are two brackets, and the two brackets are respectively arranged on the left and right sides of the top of the clamp of the pile press. The two brackets are arranged at a 90-degree angle. There are two rotating rods. One end of one of the rotating rods is rotatably arranged at the top of the front and middle parts of the inner cavity of one of the brackets through bearings, and the other end of the other rotating rod is rotatably arranged at the top of the middle parts of the left and right sides of the inner cavity of the other bracket through bearings. The top of the swing rod is fixedly sleeved on the middle part of the outer wall of the rotating rod. The counterweight ball is arranged at the bottom of the swing rod. The offset angle monitoring component is arranged in the inner cavity of the bracket.

[0006] Preferably, the offset angle monitoring component includes: first gears, first sliders, racks, first chutes, first guide rods, and push switches. There are four first gears, and the four first gears are respectively sleeved on the front, rear, left, and right ends of the outer walls of the two rotating rods and locked by set screws. There are four first sliders, and the four first sliders are respectively arranged at the top of the left and right sides and the top of the front and rear sides of the inner cavities of the two brackets. There are two racks. The left and right sides of the top of one of the racks are respectively provided with first chutes along the front and rear directions, and the front and rear sides of the top of the other rack are respectively provided with first chutes along the left and right directions. The four first sliders are respectively slidably inserted and adapted into the middle parts of the inner cavities of the four first chutes. The two racks are respectively meshed with the four first gears. There are four first guide rods. The front and rear ends of two of the first guide rods are respectively arranged at the front and rear sides of the inner cavities of two of the first chutes, and the left and right ends of the other two first guide rods are respectively arranged at the left and right sides of the inner cavities of the other two first chutes. The first sliders are slidably sleeved on the outer walls of the first guide rods. There are four push switches, and the four push switches are respectively arranged at the middle parts of the top of the front and rear sides and the top of the left and right sides of the inner cavities of the two brackets. The positions of the push switches correspond to the positions of the racks. The four push switches are respectively electrically connected to four warning lights.

[0007] Preferably, the distance between the first slider and the side wall of the inner cavity of the first chute is greater than the distance between the rack and the push switch, ensuring that the rack can contact the push switch and press the push switch.

[0008] Preferably, the press-in depth monitoring mechanism includes: a second guide rod, a second chute, a sleeve, a second slider, a sleeve plate and a rubber roller. There are two second guide rods, and the two second guide rods are respectively arranged on the front and rear sides of the bottom end of the static pile driver. The second guide rod on the front side is rotatably arranged at the bottom end of the static pile driver through a bearing. A plurality of second chutes are equidistantly arranged on the outer wall of the second guide rod on the front side in the circumferential direction from left to right. The sleeve is slidably sleeved on the outer wall of the second guide rod on the front side. The number of the second sliders is several, and the several second sliders are respectively arranged on the inner wall of the sleeve in the circumferential direction at equal intervals. The second slider is slidably and adaptively inserted into the inner cavity of the second chute corresponding to its position. The number of the sleeve plates is two. One of the sleeve plates is rotatably sleeved on the left and right sides of the outer wall of the sleeve through a bearing, and the other sleeve plate is slidably sleeved on the outer wall of the second guide rod on the rear side. The front and rear ends of the rubber roller are respectively rotatably arranged at the middle parts of the inner sides of the two sleeve plates. The front end of the rubber roller rotatably extends into the inner cavity of the sleeve plate on the front side. The position of the rubber roller corresponds to the position of the pile driver gripper.

[0009] Preferably, the press-in depth monitoring mechanism further includes: a counting component, a positioning component and a moving component; the counting component is arranged on the front side of the static pile driver, the positioning component is arranged in the inner cavity of the counting component, and the moving component is arranged at the bottom end of the static pile driver. The moving component can be used to drive the rubber roller to move.

[0010] Preferably, the counting component includes: a first bevel gear, a second bevel gear, a third bevel gear, a first connecting rod, a fourth bevel gear, a second gear, a second connecting rod, a third gear and a reading indicating component. The first bevel gear is sleeved on the front side of the outer wall of the rubber roller and locked by a set screw. The first bevel gear is located in the inner cavity of the sleeve plate. The second bevel gear is sleeved on the middle part of the outer wall of the sleeve and locked by a set screw. The first bevel gear and the second bevel gear are meshed with each other. The third bevel gear is sleeved on the right side of the outer wall of the second guide rod on the front side and locked by a set screw. The first connecting rod is rotatably arranged at the front side of the bottom end of the static pile driver through a bearing. The fourth bevel gear is sleeved on the rear side of the outer wall of the first connecting rod and locked by a set screw. The fourth bevel gear and the third bevel gear are meshed with each other. The second gear is sleeved on the front side of the outer wall of the first connecting rod and locked by a set screw. The rear end of the second connecting rod is rotatably arranged at the front side of the static pile driver through a bearing. The third gear is sleeved on the outer wall of the second connecting rod and locked by a set screw. The third gear and the second gear are meshed with each other. The reading indicating component is arranged on the front side of the static pile driver.

[0011] Preferably, the reading indicating assembly includes: a third connecting rod, a fourth gear, a fifth gear, a fourth connecting rod, a sleeve, an extrusion groove, a pointer, a clamping groove, and an indicating disk. The rear end of the third connecting rod is rotatably arranged on the front side of the static pile driver through a bearing. The rear end of the fourth connecting rod is rotatably arranged on the front side of the static pile driver through a bearing. A plurality of extrusion grooves are equidistantly arranged along the circumferential direction on the front side of the outer wall of the fourth connecting rod. The sleeve is rotatably sleeved on the middle part of the outer wall of the fourth connecting rod through a bearing. A plurality of extrusion grooves are equidistantly arranged along the circumferential direction on the front side of the outer wall of the sleeve. The number of the fourth gears is two. One of the fourth gears is sleeved on the rear side of the outer wall of the third connecting rod and locked by a setscrew. The other fourth gear is sleeved on the rear side of the outer wall of the sleeve and locked by a setscrew. The fourth gear located on the outer wall of the third connecting rod meshes with the third gear. The number of the fifth gears is two. One of the fifth gears is sleeved on the front side of the outer wall of the third connecting rod and locked by a setscrew. The other fifth gear is sleeved on the rear side of the outer wall of the fourth connecting rod and locked by a setscrew. The number of the pointers is two. The two pointers are respectively rotatably sleeved on the front side of the outer wall of the fourth connecting rod and the front side of the outer wall of the sleeve through bearings. A plurality of clamping grooves are equidistantly arranged along the circumferential direction on the inner wall of the pointer. The indicating disk is arranged on the front side of the static pile driver.

[0012] Preferably, the front ends of the fourth connecting rod and the sleeve can both slide out of the middle part of the indicating disk, and the pointer is located in the inner cavity of the indicating disk.

[0013] Preferably, the two fifth gears respectively mesh with the two fourth gears, and the number of the outer diameter teeth of the fourth gear is several integral multiples of the number of the outer diameter teeth of the fifth gear.

[0014] Preferably, the positioning assembly includes: a first spring and a clamping ball. The first spring is embedded in the inner cavity of the extrusion groove. One end of the first spring is clamped on the inner wall of the extrusion groove. A part of the clamping ball is slidably embedded in the inner cavity of the extrusion groove. The other part of the clamping ball is adaptively inserted into the inner cavity of the clamping groove corresponding to its position. The other end of the first spring is clamped on the outer wall of the clamping ball. The length of the clamping ball inserted into the inner cavity of the clamping groove is less than its radius.

[0015] The beneficial effects of a bridge pier cofferdam construction device proposed by the present invention are as follows: 1. The present invention can lift the pile body through a static pile driver, insert the pile body into the pile driver gripper, use the pile driver gripper to clamp and fix the pile body, and use the hydraulic system to drive the pile body to move downward through the pile driver gripper, so as to insert the pile body into the ground.

[0016] 2. During the use of the present invention, if the static pile driver is skewed, it will drive the clamp of the pile driver to be skewed. When the outer side of the clamp of the static pile driver is skewed, it will drive the support to tilt. Thus, due to the factor of the self - gravity of the counterweight ball, it will drive the rotating rod to rotate through the swing rod. The rotation of the rotating rod can drive the first gear to rotate. The rotation of the first gear will cause the rack to slide. If the skewed angle of the static pile driver is too large, exceeding the allowable skewed angle specified for the static pile driver, it will cause the rack to press the push switch, thereby causing the warning light electrically connected to the push switch to emit light. Thus, it can remind the staff that the static pile driver is skewed and the skewed direction of the static pile driver.

[0017] 3. Through the moving component of the present invention, the rubber roller can be pushed to move, making the rubber roller contact with the pile body and applying an appropriate extrusion force to the pile body, thereby increasing the friction between the rubber roller and the pile body. When the pile body is inserted into the ground downward, it will cause the rubber roller to drive the first bevel gear to rotate. The rotation of the first bevel gear can cooperate with the second bevel gear to cause the sleeve to rotate. The rotation of the sleeve can utilize the cooperation between the second slider and the second chute to cause the second guide rod to drive the third bevel gear to rotate. The rotation of the third bevel gear can cooperate with the fourth bevel gear to cause the first connecting rod to drive the second gear to rotate. The rotation of the second gear can drive the third gear to rotate. Thus, the rotating third gear can cooperate with the fourth gear located on the outer wall of the third connecting rod to drive the fifth gear on its outer wall to rotate through the third connecting rod. Since the two fourth gears are respectively engaged with the two fifth gears, when the fourth gear and the fifth gear on the outer wall of the third connecting rod rotate synchronously, the fifth gear on the outer wall of the fourth connecting rod can drive the fourth connecting rod to rotate through the fourth connecting rod. The fourth gear on the outer wall of the sleeve can drive the sleeve to rotate. Further, the fourth connecting rod and the sleeve can drive the two pointers to rotate in the inner cavity of the indicating disk. Since the number of teeth on the outer diameter of the fourth gear is an integer multiple of the number of teeth on the outer diameter of the fifth gear, when the fifth gear on the outer wall of the fourth connecting rod drives the pointer on its outer wall to rotate one week through the fourth connecting rod, it will cause the fourth gear on the outer wall of the sleeve to drive the pointer on its outer wall to rotate one scale on the indicating disk through the sleeve. Thus, the cooperation between the two pointers and the indicating disk can record the depth of the pile body pressed into the ground. When the pile body rebounds, under the action of the pile body, it will cause the rubber roller to rotate in the reverse direction. Then, it can cause the two pointers to rotate in the reverse direction. Thus, the length of the pile body rebound can be subtracted from the depth value of the pile body insertion recorded by the pointer, improving the accuracy of the pile sinking depth data.

[0018] 4. This device effectively solves the problem of measurement errors caused by pile body rebound during the construction of the cofferdam foundation of bridge piers and the construction of static pressure piles in karst areas. It significantly improves the accuracy of the pile sinking depth data, avoids the distortion problems of the artificial marking method and the calculation of the gripper stroke. At the same time, by dynamically monitoring the levelness of the static press, it ensures that the pile sinking verticality meets the specification requirements, prevents the pile body from being displaced, tilted or fractured, improves the bearing capacity of the pile foundation and the structural safety, reduces the construction rework cost and the risk of construction period delay, and provides a more reliable technical guarantee for the construction of karst area foundation projects. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a schematic structural diagram of a static pressure pile machine; Figure 3 It is a schematic structural diagram of a verticality monitoring mechanism; Figure 4 It is a schematic structural diagram of a press-in depth monitoring mechanism; Figure 5 It is an exploded view of the verticality monitoring mechanism; Figure 6 It is an exploded view of the press-in depth monitoring mechanism; Figure 7 It is for Figure 1 The enlarged view at position A of Figure 8 It is for Figure 5 The enlarged view at position B of Figure 9 It is for Figure 6 The enlarged view at position C of Figure 10 It is for Figure 6 The enlarged view at position D of Figure 11 It is for Figure 6 The enlarged view at position E of Figure 12 It is for Figure 6 The enlarged view at position F of Figure 13 It is for Figure 6 The enlarged view at position G of

[0020] In the figure: 1, static pile press; 2, pile press gripper; 3, verticality monitoring mechanism; 301, support; 302, rotating rod; 303, swing rod; 304, counterweight ball; 305, first gear; 306, first slider; 307, rack; 308, first chute; 309, first guide rod; 310, push switch; 4, warning light; 5, press-in depth monitoring mechanism; 51, second guide rod; 52, second chute; 53, sleeve; 54, second slider; 55, sleeve plate; 56, rubber roller; 57, first bevel gear; 58, second bevel gear; 59, third bevel gear; 510, first connecting rod; 511, fourth bevel gear; 512, second gear; 513, second connecting rod; 514, third gear; 515, third connecting rod; 516, fourth gear; 517, fifth gear; 518, fourth connecting rod; 519, casing; 520, extrusion groove; 521, first spring; 522, clamping ball; 523, pointer; 524, card slot; 525, dial; 526, sleeve frame; 527, third guide rod; 528, annular pressure sensor; 529, pressing plate; 530, second spring; 531, push cylinder; 532, hydraulic cylinder. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 13 , the present invention provides a technical solution for a bridge pier cofferdam construction device, including: a static pile press 1, a pile press gripper 2, a verticality monitoring mechanism 3, a warning light 4 and a press-in depth monitoring mechanism 5. The pile press gripper 2 is slidably arranged in the inner cavity of the static pile press 1 through a hydraulic system. The pile press gripper 2 is a prior art and will not be elaborated here. The pile press gripper 2 is used to clamp and fix the pile body, and the pile body is pressed into the ground through the pile press gripper 2 by using the hydraulic system. The verticality monitoring mechanism 3 is arranged at the top of the pile press gripper 2. The verticality monitoring mechanism 3 is used to monitor the verticality and levelness of the static pile press 1. The number of warning lights 4 is four, and the four warning lights 4 are respectively arranged at the four corners of the top of the pile press gripper 2. When the static pile press 1 is tilted too much, the warning light 4 will give an alarm. The press-in depth monitoring mechanism 5 is arranged at the bottom of the static pile press 1. The position of the press-in depth monitoring mechanism 5 corresponds to the position of the pile press gripper 2. The press-in depth monitoring mechanism 5 is used to record the depth of the pile body pressed into the ground in real time.

[0023] As a preferred solution, further, the perpendicularity monitoring mechanism 3 includes: a bracket 301, a rotating rod 302, a swing rod 303, a counterweight ball 304, and an offset angle monitoring component. The number of brackets 301 is two, and the two brackets 301 are respectively arranged on the left and right sides of the top of the pile press gripper 2. The two brackets 301 are arranged at a 90-degree angle. The number of rotating rods 302 is two. One end of one rotating rod 302 is rotatably arranged at the front and middle top of the inner cavity of one bracket 301 through bearings, and the other end of the other rotating rod 302 is rotatably arranged at the left and right middle tops of the inner cavity of the other bracket 301 through bearings. The top of the swing rod 303 is fixedly sleeved on the middle of the outer wall of the rotating rod 302. The counterweight ball 304 is arranged at the bottom of the swing rod 303. When the static pile press 1 is skewed, the gravity of the counterweight ball 304 itself will cause the counterweight ball 304 to always be vertically downward. Furthermore, the rotating rod 302 can be driven to rotate through the swing rod 303. The offset angle monitoring component is arranged in the inner cavity of the bracket 301, and the offset angle monitoring component is used to monitor the offset angle of the static pile press 1.

[0024] More specifically, the offset angle monitoring component includes: a first gear 305, a first slider 306, a rack 307, a first chute 308, a first guide rod 309, and a push switch 310. The number of the first gears 305 is four, and the four first gears 305 are respectively sleeved on the front and rear ends and the left and right ends of the outer walls of the two rotating rods 302 and are locked by set screws. The number of the first sliders 306 is four, and the four first sliders 306 are respectively arranged at the top ends of the left and right sides and the top ends of the front and rear sides of the inner cavities of the two brackets 301. The number of the racks 307 is two. A first chute 308 is formed in the front and rear directions on both the left and right sides of the top end of one of the racks 307, and a first chute 308 is formed in the left and right directions on both the front and rear sides of the top end of the other rack 307. The four first sliders 306 are respectively slidably and adaptively inserted into the middle parts of the inner cavities of the four first chutes 308. The two racks 307 are respectively meshed with the four first gears 305. The rack 307 is used to squeeze the push switch 310. The number of the first guide rods 309 is four. The front and rear ends of two of the first guide rods 309 are respectively arranged on the front and rear sides of the inner cavities of two of the first chutes 308, and the left and right ends of the other two first guide rods 309 are respectively arranged on the left and right sides of the inner cavities of the other two first chutes 308. The first slider 306 is slidably sleeved on the outer wall of the first guide rod 309. The cooperation between the first guide rod 309 and the first slider 306 can support the rack 307. The number of the push switches 310 is four, and the four push switches 310 are respectively arranged in the middle parts of the top ends of the front and rear sides and the top ends of the left and right sides of the inner cavities of the two brackets 301. The positions of the push switches 310 correspond to the positions of the racks 307. The four push switches 310 are respectively electrically connected to the four warning lights 4. By squeezing the push switch 310, the warning light 4 electrically connected thereto can be made to emit light. The distance between the first slider 306 and the side wall of the inner cavity of the first chute 308 is greater than the distance between the rack 307 and the push switch 310, ensuring that the rack 307 can contact and press the push switch 310.

[0025] As a preferred solution, furthermore, the pressing depth monitoring mechanism 5 includes: a second guide rod 51, a second sliding groove 52, a sleeve 53, a second slider 54, a sleeve plate 55, a rubber roller 56, a counting component, a positioning component, and a moving component. The number of the second guide rods 51 is two, and the two second guide rods 51 are respectively arranged on the front and rear sides of the bottom end of the static pile driver 1. The second guide rod 51 on the front side is rotatably arranged at the bottom end of the static pile driver 1 through a bearing. A plurality of second sliding grooves 52 are equidistantly arranged along the circumferential direction of the outer wall of the second guide rod 51 on the front side from left to right. The second guide rod 51 is used to support the rubber roller 56. The sleeve 53 is slidably sleeved on the outer wall of the second guide rod 51 on the front side. The number of the second sliders 54 is several, and the several second sliders 54 are respectively arranged equidistantly along the circumferential direction on the inner wall of the sleeve 53. The second slider 54 is slidably and adaptively inserted into the inner cavity of the second sliding groove 52 corresponding to its position. When the sleeve 53 rotates, the cooperation between the second slider 54 and the second sliding groove 52 can cause the second guide rod 51 on the front side to rotate synchronously. The number of the sleeve plates 55 is two. One of the sleeve plates 55 is rotatably sleeved on the left and right sides of the outer wall of the sleeve 53 through a bearing, and the other sleeve plate 55 is slidably sleeved on the outer wall of the second guide rod 51 on the rear side. The front and rear ends of the rubber roller 56 are respectively rotatably arranged at the middle parts of the inner sides of the two sleeve plates 55. The front end of the rubber roller 56 rotatably extends into the inner cavity of the sleeve plate 55 on the front side. The position of the rubber roller 56 corresponds to the position of the pile driver gripper 2. When the pile body moves downward or upward, the friction between the pile body and the rubber roller 56 can be used to cause the rubber roller 56 to rotate. The counting component is arranged on the front side of the static pile driver 1, the positioning component is arranged in the inner cavity of the counting component, and the moving component is arranged at the bottom end of the static pile driver 1. The moving component can be used to drive the rubber roller 56 to move.

[0026] More specifically, the counting component includes: a first bevel gear 57, a second bevel gear 58, a third bevel gear 59, a first connecting rod 510, a fourth bevel gear 511, a second gear 512, a second connecting rod 513, a third gear 514 and a reading indicating component. The first bevel gear 57 is sleeved on the front side of the outer wall of the rubber roller 56 and locked by a set screw. The first bevel gear 57 is located in the inner cavity of the sleeve plate 55. The second bevel gear 58 is sleeved on the middle part of the outer wall of the sleeve 53 and locked by a set screw. The first bevel gear 57 and the second bevel gear 58 are meshed with each other. The third bevel gear 59 is sleeved on the right side of the outer wall of the front second guide rod 51 and locked by a set screw. The first connecting rod 510 is rotatably arranged at the front bottom side of the static pile driver 1 through a bearing. The fourth bevel gear 511 is sleeved on the rear side of the outer wall of the first connecting rod 510 and locked by a set screw. The fourth bevel gear 511 and the third bevel gear 59 are meshed with each other. The second gear 512 is sleeved on the front side of the outer wall of the first connecting rod 510 and locked by a set screw. The rear end of the second connecting rod 513 is rotatably arranged at the front side of the static pile driver 1 through a bearing. The third gear 514 is sleeved on the outer wall of the second connecting rod 513 and locked by a set screw. The third gear 514 and the second gear 512 are meshed with each other. The reading indicating component is arranged at the front side of the static pile driver 1.

[0027] More specifically, the reading indicating assembly includes: a third connecting rod 515, a fourth gear 516, a fifth gear 517, a fourth connecting rod 518, a sleeve 519, an extrusion groove 520, a pointer 523, a clamping groove 524, and an indicating disc 525. The rear end of the third connecting rod 515 is rotatably arranged on the front side of the static pile driver 1 through a bearing. The rear end of the fourth connecting rod 518 is rotatably arranged on the front side of the static pile driver 1 through a bearing. A plurality of extrusion grooves 520 are equidistantly arranged in the circumferential direction on the front side of the outer wall of the fourth connecting rod 518. The sleeve 519 is rotatably sleeved on the middle part of the outer wall of the fourth connecting rod 518 through a bearing. A plurality of extrusion grooves 520 are equidistantly arranged in the circumferential direction on the front side of the outer wall of the sleeve 519. The number of the fourth gears 516 is two. One of the fourth gears 516 is sleeved on the rear side of the outer wall of the third connecting rod 515 and locked by a setscrew. The other fourth gear 516 is sleeved on the rear side of the outer wall of the sleeve 519 and locked by a setscrew. The fourth gear 516 located on the outer wall of the third connecting rod 515 meshes with the third gear 514. The number of the fifth gears 517 is two. One of the fifth gears 517 is sleeved on the front side of the outer wall of the third connecting rod 515 and locked by a setscrew. The other fifth gear 517 is sleeved on the rear side of the outer wall of the fourth connecting rod 518 and locked by a setscrew. The two fifth gears 517 respectively mesh with the two fourth gears 516. The number of the outer diameter teeth of the fourth gear 516 is several integral multiples of the number of the outer diameter teeth of the fifth gear 517. The number of the pointers 523 is two. The two pointers 523 are respectively rotatably sleeved on the front side of the outer wall of the fourth connecting rod 518 and the front side of the outer wall of the sleeve 519 through bearings. A plurality of clamping grooves 524 are equidistantly arranged in the circumferential direction on the inner wall of the pointer 523. When the fourth connecting rod 518 and the sleeve 519 rotate, the pointers 523 can be driven to rotate. The indicating disc 525 is arranged on the front side of the static pile driver 1. The front ends of the fourth connecting rod 518 and the sleeve 519 can both slide out of the middle part of the indicating disc 525. The pointer 523 is located in the inner cavity of the indicating disc 525. The cooperation between the pointer 523 and the indicating disc 525 can be used to record the depth of the pile inserted into the ground.

[0028] More specifically, the positioning component includes: a first spring 521 and a clamping ball 522. The first spring 521 is embedded in the inner cavity of the extrusion groove 520. One end of the first spring 521 is clamped to the inner wall of the extrusion groove 520. The first spring 521 is a rotary spring, which undergoes elastic deformation when subjected to external force extrusion or stretching and returns to its initial state after the external force is removed. The first spring 521 is used here to squeeze the clamping ball 522 into the inner cavity of the clamping groove 524. A part of the clamping ball 522 is slidably embedded in the inner cavity of the extrusion groove 520, and the other part of the clamping ball 522 is adaptively inserted into the inner cavity of the clamping groove 524 corresponding to its position. The other end of the first spring 521 is clamped to the outer wall of the clamping ball 522. The length of the clamping ball 522 inserted into the inner cavity of the clamping groove 524 is less than its radius. The cooperation between the clamping ball 522 and the clamping groove 524 can be used to position the pointer 523.

[0029] More specifically, the moving component includes: a sleeve 526, a third guide rod 527, an annular pressure sensor 528, a pressing piece 529, a second spring 530, a push cylinder 531 and a hydraulic cylinder 532. The front and rear sides of the sleeve 526 are respectively rotatably sleeved on the front and rear outer walls of the rubber roller 56 through bearings. The left end of the third guide rod 527 is arranged in the middle of the left side of the inner cavity of the sleeve 526. The annular pressure sensor 528 is arranged on the left side of the inner cavity of the sleeve 526. The annular pressure sensor 528 is a prior art and will not be elaborated here. The annular pressure sensor 528 is used here to record the extrusion force exerted on it by the pressing piece 529, so as to judge the extrusion force exerted by the rubber roller 56 on the pile body. The pressing piece 529 is slidably sleeved on the outer wall of the third guide rod 527, and the pressing piece 529 is in contact with the annular pressure sensor 528. The second spring 530 is sleeved on the outer wall of the third guide rod 527. One end of the second spring 530 is clamped to the outer wall of the pressing piece 529. The second spring 530 is a rotary spring, which undergoes elastic deformation when subjected to external force extrusion or stretching and returns to its initial state after the external force is removed. The second spring 530 is used here to squeeze the pressing piece 529. The push cylinder 531 is slidably sleeved on the outer wall of the third guide rod 527. The other end of the second spring 530 is clamped to the left side of the push cylinder 531. The hydraulic cylinder 532 is arranged at the bottom end of the static pile driver 1. The push cylinder 531 is arranged at the left end of the hydraulic cylinder 532. The hydraulic cylinder 532 is a prior art and will not be elaborated here. The hydraulic cylinder 532 is used here to push the rubber roller 56 to move.

[0030] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0031] During use, move the static pile driver 1 to the designated position, and determine whether the levelness and verticality of the static pile driver 1 are qualified by observing whether the warning light 4 is lit. When the levelness and verticality of the static pile driver 1 are unqualified, it will cause the static pile driver 1 to drive the pile driver gripper 2 to tilt, and then use the pile driver gripper 2 to drive the bracket 301 to tilt. Since the center of gravity of the counterweight ball 304 always points downward, under the action of the gravity of the counterweight ball 304, the swing rod 303 will drive the rotating rod 302 to rotate. The rotation of the rotating rod 302 will drive the first gear 305 to rotate. The rotation of the first gear 305 can cause the rack 307 to slide. Since the levelness and verticality of the static pile driver 1 are unqualified at this time, the tilting angle of the static pile driver 1 is greater than the allowable tilting angle at this time. Therefore, at this time, the rack 307 will be driven by the first gear 305 to move, and one of the racks 307 will be used to squeeze one of the corresponding push switches 310 or two racks 307 will be used to squeeze the corresponding push switches 310 respectively. Thus, it can cause the warning light 4 electrically connected to the squeezed push switch 310 to emit light, so as to remind the staff that the static pile driver 1 is tilted, and the tilting angle of the static pile driver 1 can be judged by observing the lit warning light 4. The angle of the static pile driver 1 can be adjusted through the hydraulic system of the static pile driver 1 itself until the warning light 4 goes out. At this time, use the static pile driver 1 to lift the pile body and insert it into the pile driver gripper 2, and use the pile driver gripper 2 to clamp and fix the pile body. At this time, start the hydraulic cylinder 532, and use the hydraulic cylinder 532 to push the pressing piece 529 and the sleeve 526 through the pushing cylinder 531 and the second spring 530 to drive the rubber roller 56 to move to the left until the outer wall of the rubber roller 56 contacts the outer wall of the pile body. Continue to use the hydraulic cylinder 532 to push the pushing cylinder 531 to the left. Since the pile body can block the rubber roller 56, the pushing cylinder 531 moving to the left can squeeze the second spring 530 to deform elastically. As the elastic deformation of the second spring 530 increases, the squeezing force exerted by the second spring 530 on the pressing piece 529 will increase, thereby increasing the squeezing force exerted by the pressing piece 529 on the annular pressure sensor 528. By reading the value displayed by the annular pressure sensor 528, the squeezing force exerted by the rubber roller 56 on the pile body can be judged until the annular pressure sensor 528 displays an appropriate value, and then turn off the hydraulic cylinder 532, so as to increase the friction between the rubber roller 56 and the pile body, and when the pile body moves up and down, it can drive the rubber roller 56 to rotate. Use the hydraulic system to drive the pile driver gripper 2 to move downward, so that the pile body can be inserted into the ground. During the construction process, observe in real time whether the warning light 4 is lit. If the warning light 4 is lit, the angle of the static pile driver 1 can be adjusted in real time to ensure the verticality and levelness of the static pile driver 1 during the construction process. When the pile body is inserted into the ground, it will cause the rubber roller 56 to drive the first bevel gear 57 to rotate.The rotation of the first bevel gear 57 can cooperate with the second bevel gear 58 to cause the sleeve 53 to rotate. The rotation of the sleeve 53 can use the cooperation between the second slider 54 and the second slide groove 52 to cause the second guide rod 51 to drive the third bevel gear 59 to rotate. The rotation of the third bevel gear 59 can cooperate with the fourth bevel gear 511 to cause the first connecting rod 510 to drive the second gear 512 to rotate. The rotation of the second gear 512 can drive the third gear 514 to rotate, so that the rotating third gear 514 can cooperate with the fourth gear 516 located on the outer wall of the third connecting rod 515 to drive the fifth gear 517 on its outer wall to rotate. The two fourth gears 516 are meshed with the two fifth gears 517 respectively, and then when the fourth gear 516 and the fifth gear 517 on the outer wall of the third connecting rod 515 rotate synchronously, the fourth connecting rod 518 can be driven to rotate by the fifth gear 517 on the outer wall of the fourth connecting rod 518, and the sleeve 519 can be driven to rotate by the fourth gear 516 on the outer wall of the sleeve 519, and the two pointers 523 can be driven to rotate in the inner cavity of the indicator plate 525 by the fourth connecting rod 518 and the sleeve 519. Since the number of teeth on the outer diameter of the fourth gear 516 is several integer multiples of the number of teeth on the outer diameter of the fifth gear 517, when the fourth gear 516 on the outer wall of the fourth connecting rod 518 rotates synchronously, the fifth gear 517 on the outer wall of the fourth connecting rod 518 can drive the fourth connecting rod 518 to rotate, and the fourth gear 516 on the outer wall of the sleeve 519 can drive the sleeve 519 to rotate, and the fourth connecting rod 518 and the sleeve 519 can further drive the two pointers 523 to rotate in the inner cavity of the indicator plate 525. When the fifth gear 517 drives the pointer 523 on its outer wall to rotate one circle through the fourth connecting rod 518, the fourth gear 516 on the outer wall of the sleeve 519 drives the pointer 523 on its outer wall to rotate one scale on the indicator disk 525 through the sleeve 519, so that the depth of the pile body pressed into the ground can be recorded by the cooperation between the two pointers 523 and the indicator disk 525. When the pile body rebounds, the rubber roller 56 will be driven to rotate in the opposite direction under the action of the pile body, and then the two pointers 523 can be driven to rotate in the opposite direction, so that the length of the pile body rebound can be subtracted from the pile body insertion depth value recorded by the pointer 523, thereby improving the accuracy of the pile depth data. After the pile construction is completed, when the reading of the pointer 523 needs to be reset, one hand holds the fourth gear 516 or the fifth gear 517 on the outer wall of the third connecting rod 515, thereby preventing the fourth connecting rod 518 and the sleeve 519 from rotating, and the other hand rotates the pointer 523. The pointer 523 can rotate and use the inner wall of the card slot 524 to squeeze the card ball 522 to move into the inner cavity of the extrusion groove 520, and squeeze the first spring 521 to cause elastic deformation until the card ball 522 completely leaves the inner cavity of the card slot 524. After the pointer 523 is rotated and reset, the card ball 522 can be pushed into the inner cavity of the card slot 524 corresponding to its current position under the elastic force of the first spring 521.

[0032] In summary, the present device effectively solves the measurement error problem caused by pile body rebound during the static pile pressing construction in karst areas, significantly improves the accuracy of the pile sinking depth data, avoids the distortion problems of the artificial marking method and the calculation of the gripper stroke. At the same time, by dynamically monitoring the levelness of the static pile press, it ensures that the pile sinking verticality meets the specification requirements, prevents pile body deviation, inclination or fracture, improves the pile foundation bearing capacity and structural safety, reduces the construction rework cost and the risk of construction period delay, and provides a more reliable technical guarantee for the foundation engineering construction in karst areas.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction device for a cofferdam of a bridge pier column, characterized in that Including: A static pile driver (1); A pile driver gripper (2), which is slidably arranged in the inner cavity of the static pile driver (1) through a hydraulic system; A verticality monitoring mechanism (3), which is arranged at the top end of the pile driver gripper (2); Warning lights (4), the number of the warning lights (4) is four, and the four warning lights (4) are respectively arranged at the four corners of the top end of the pile driver gripper (2); A penetration depth monitoring mechanism (5), which is arranged at the bottom end of the static pile driver (1), and the position of the penetration depth monitoring mechanism (5) corresponds to the position of the pile driver gripper (2); The verticality monitoring mechanism (3) includes: Supports (301), the number of the supports (301) is two, and the two supports (301) are respectively arranged on the left and right sides of the top end of the pile driver gripper (2), and the two supports (301) are arranged at a 90-degree angle; Rotating rods (302), the number of the rotating rods (302) is two, and both ends of one of the rotating rods (302) are rotatably arranged at the front and middle top ends of the inner cavity of one of the supports (301) through bearings, and both ends of the other rotating rod (302) are rotatably arranged at the left and right middle top ends of the inner cavity of the other support (301) through bearings; A swing rod (303), the top end of the swing rod (303) is fixedly sleeved on the middle part of the outer wall of the rotating rod (302); A counterweight ball (304), which is arranged at the bottom end of the swing rod (303); An offset angle monitoring component, which is arranged in the inner cavity of the support (301).

2. The construction device for a bridge pier cofferdam according to claim 1, wherein, The offset angle monitoring component includes: First gears (305), the number of the first gears (305) is four, and the four first gears (305) are respectively sleeved on the front and rear ends and the left and right ends of the outer walls of the two rotating rods (302) and are locked by set screws; First sliders (306), the number of the first sliders (306) is four, and the four first sliders (306) are respectively arranged at the top ends of the left and right sides and the top ends of the front and rear sides of the inner cavities of the two supports (301); Rack bars (307), the number of the rack bars (307) is two, and both the left and right sides of the top end of one of the rack bars (307) are provided with first chutes (308) along the front and rear directions, and both the front and rear sides of the top end of the other rack bar (307) are provided with first chutes (308) along the left and right directions. The four first sliders (306) are respectively slidably and adaptively inserted into the middle parts of the inner cavities of the four first chutes (308), and the two rack bars (307) are respectively meshed with the four first gears (305); The first guide rod (309), the number of the first guide rods (309) is four, the front and rear ends of two of the first guide rods (309) are respectively arranged on the front and rear sides of the inner cavities of two of the first chutes (308), and the left and right ends of the other two first guide rods (309) are respectively arranged on the left and right sides of the inner cavities of the other two first chutes (308). The first slider (306) is slidably sleeved on the outer wall of the first guide rod (309). The push switches (310), the number of the push switches (310) is four, the four push switches (310) are respectively arranged at the middle parts of the front and rear sides of the top ends of the inner cavities of two brackets (301) and at the middle parts of the left and right sides of the top ends of the inner cavities. The positions of the push switches (310) correspond to the positions of the racks (307), and the four push switches (310) are respectively electrically connected to the four warning lights (4).

3. The construction device for the cofferdam of a bridge pier column according to claim 2, characterized in that, The distance between the first slider (306) and the side wall of the inner cavity of the first chute (308) is greater than the distance between the rack (307) and the push switch (310), ensuring that the rack (307) can contact the push switch (310) and press the push switch (310).

4. The construction device for the cofferdam of a bridge pier column according to claim 3, wherein, The penetration depth monitoring mechanism (5) includes: The second guide rods (51), the number of the second guide rods (51) is two, the two second guide rods (51) are respectively arranged on the front and rear sides of the bottom end of the static pile driver (1). The second guide rod (51) located on the front side is rotatably arranged at the bottom end of the static pile driver (1) through a bearing, and a plurality of second chutes (52) are equidistantly arranged on the outer wall of the second guide rod (51) located on the front side in the circumferential direction from left to right. The sleeve (53), the sleeve (53) is slidably sleeved on the outer wall of the second guide rod (51) located on the front side. The second sliders (54), the number of the second sliders (54) is several, the several second sliders (54) are respectively arranged on the inner wall of the sleeve (53) equidistantly in the circumferential direction, and the second sliders (54) are slidably and adaptively inserted into the inner cavities of the second chutes (52) corresponding to their positions. The sleeve plates (55), the number of the sleeve plates (55) is two, one of the sleeve plates (55) is rotatably sleeved on the left and right sides of the outer wall of the sleeve (53) through a bearing, and the other sleeve plate (55) is slidably sleeved on the outer wall of the second guide rod (51) located on the rear side. The rubber roller (56), the front and rear ends of the rubber roller (56) are respectively rotatably arranged at the middle parts of the inner sides of the two sleeve plates (55) through bearings. The front end of the rubber roller (56) rotatably extends into the inner cavity of the sleeve plate (55) located on the front side, and the position of the rubber roller (56) corresponds to the position of the pile driver gripper (2).

5. The construction device for the cofferdam of a bridge pier column according to claim 4, wherein, The penetration depth monitoring mechanism (5) further includes: The counting component, the counting component is arranged on the front side of the static pile driver (1). The positioning component, the positioning component is arranged in the inner cavity of the counting component. The moving component, the moving component is arranged at the bottom end of the static pile driver (1), and the moving component can be used to drive the rubber roller (56) to move.

6. The construction device for a bridge pier cofferdam according to claim 5, wherein The counting component includes: A first bevel gear (57) sleeved on the front side of the outer wall of the rubber roller (56) and locked by a setscrew. The first bevel gear (57) is located in the inner cavity of the sleeve plate (55); A second bevel gear (58) sleeved on the middle part of the outer wall of the sleeve (53) and locked by a setscrew. The first bevel gear (57) and the second bevel gear (58) are meshed with each other; A third bevel gear (59) sleeved on the right side of the outer wall of the second guide rod (51) located at the front side and locked by a setscrew; A first connecting rod (510) rotatably arranged at the front bottom side of the static pile driver (1) through a bearing; A fourth bevel gear (511) sleeved on the rear side of the outer wall of the first connecting rod (510) and locked by a setscrew. The fourth bevel gear (511) and the third bevel gear (59) are meshed with each other; A second gear (512) sleeved on the front side of the outer wall of the first connecting rod (510) and locked by a setscrew; A second connecting rod (513) rotatably arranged at the front side of the static pile driver (1) through a bearing at the rear end; A third gear (514) sleeved on the outer wall of the second connecting rod (513) and locked by a setscrew. The third gear (514) and the second gear (512) are meshed with each other; A reading indicating component arranged at the front side of the static pile driver (1).

7. The construction device for the cofferdam of a bridge pier column according to claim 6, characterized in that, The reading indicating component includes: A third connecting rod (515) rotatably arranged at the front side of the static pile driver (1) through a bearing at the rear end; A fourth connecting rod (518) rotatably arranged at the front side of the static pile driver (1) through a bearing at the rear end. A plurality of extrusion grooves (520) are equidistantly arranged along the circumferential direction on the front side of the outer wall of the fourth connecting rod (518); A sleeve (519) rotatably sleeved on the middle part of the outer wall of the fourth connecting rod (518) through a bearing. A plurality of extrusion grooves (520) are equidistantly arranged along the circumferential direction on the front side of the outer wall of the sleeve (519); There are two fourth gears (516). One of the fourth gears (516) is sleeved on the rear side of the outer wall of the third connecting rod (515) and locked by a setscrew. The other fourth gear (516) is sleeved on the rear side of the outer wall of the sleeve (519) and locked by a setscrew. The fourth gear (516) located on the outer wall of the third connecting rod (515) is meshed with the third gear (514); The fifth gear (517), the number of the fifth gears (517) is two, one of the fifth gears (517) is sleeved on the front side of the outer wall of the third connecting rod (515) and locked by a set screw, and the other fifth gear (517) is sleeved on the rear side of the outer wall of the fourth connecting rod (518) and locked by a set screw; The pointers (523), the number of the pointers (523) is two, and the two pointers (523) are respectively rotatably sleeved on the front side of the outer wall of the fourth connecting rod (518) and the front side of the outer wall of the sleeve (519) through bearings, and a plurality of card slots (524) are equidistantly arranged along the circumferential direction on the inner wall of the pointer (523); The indicating disc (525), the indicating disc (525) is arranged on the front side of the static pile driver (1).

8. A construction device for a bridge pier cofferdam according to claim 7, characterized in that, The front ends of the fourth connecting rod (518) and the sleeve (519) can both extend out of the middle of the indicating disc (525) slidably, and the pointer (523) is located in the inner cavity of the indicating disc (525).

9. The construction device for a bridge pier cofferdam according to claim 8, characterized in that, The two fifth gears (517) are respectively meshed with the two fourth gears (516), and the number of the outer diameter teeth of the fourth gear (516) is several integral multiples of the number of the outer diameter teeth of the fifth gear (517).

10. The construction device for bridge pier cofferdam according to claim 9, characterized in that, The positioning assembly includes: The first spring (521), the first spring (521) is embedded in the inner cavity of the extrusion groove (520), and one end of the first spring (521) is clamped on the inner wall of the extrusion groove (520); The ball (522), a part of the ball (522) is slidably embedded in the inner cavity of the extrusion groove (520), the other part of the ball (522) is adaptively inserted into the inner cavity of the card slot (524) corresponding to its position, the other end of the first spring (521) is clamped on the outer wall of the ball (522), and the length of the ball (522) inserted into the inner cavity of the card slot (524) is less than its radius.

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