Installation auxiliary device for prestressed pipe pile

Abstract

The installation auxiliary device of the prestressed pipe pile comprises a machine body, a sliding way is formed in the machine body, and a pile clamping box body is installed on the inner wall of the sliding way in a sliding mode; two hydraulic supporting frames are fixedly installed on the upper end face of the machine body, the inner wall of each hydraulic supporting frame is fixedly connected with a downward pressing hydraulic cylinder, the bottom end of each downward pressing hydraulic cylinder is fixedly connected with the side end face of a pile clamping box, and a pile clamping mechanism is fixedly installed in the pile clamping box. The downward pressing hydraulic cylinder comprises a downward pressing cylinder body and a downward pressing telescopic end, and the downward pressing telescopic end is connected with the pile clamping box body; the lower end of the pressing telescopic end is fixedly connected with a telescopic connecting piece, the side end face of the pile clamping box body is fixedly connected with a box body connecting piece, and the telescopic connecting piece is connected with the box body connecting piece. When the resistance borne by the prestressed pipe pile in the descending process does not exceed a preset value, the telescopic connecting piece and the box body connecting piece move synchronously; and when the resistance borne by the prestressed pipe pile in the descending process exceeds a preset value, the telescopic connecting piece and the box body connecting piece generate relative movement.

Description

Technical Field

[0001] The invention belongs to the technical field of prestressed pipe pile construction, and in particular relates to an auxiliary installation device for prestressed pipe piles. Background Art

[0002] In the field of construction engineering, precast piles are actually what we know as reinforced concrete piles, steel piles, and wooden piles. Generally speaking, in the field of pile foundations, reinforced concrete piles are used first in the process of construction-related work in most construction projects. Compared with other piles, reinforced concrete precast piles have the advantages of strong load capacity, small settlement deformation, and high efficiency in the actual application process, so they can stand out among other types of piles, and at the same time, they can be widely used in the field of construction engineering.

[0003] Static pressure piles, also known as static pressure reinforced concrete precast piles, are an important method in pile foundation construction. It relies on the pile driving mechanism of the static pile driver, using the deadweight of the pile driver and the counterweight on the frame as the reaction force to slowly press the precast piles into the soil. This pile driving process has many advantages, including no damage to the pile body, no noise, no vibration, no impact during construction, and no pollution to the environment.

[0004] In static pile construction, a pile driver is required as an auxiliary device for the installation of prestressed pipe piles. When working, the prestressed pipe pile is lifted by a crane, and the crane is adjusted to turn the prestressed pipe pile to the top of the pile clamping box and align it with the pile clamping mechanism, so that the prestressed pipe pile enters the pile clamping box, and the prestressed pipe pile is clamped by the pile clamping mechanism, and then the downward hydraulic cylinder is started to drive the pile clamping box to rise or fall, completing the pile pressing work.

[0005] There is a preset speed when the prestressed pile is pressed down, that is, the hydraulic cylinder will move at a specified speed to drive the pile clamp box to descend at the specified speed. In practice, the personnel observe the speed of the prestressed pile descent. If the descent speed slows down, it means that the prestressed pile is subjected to too much resistance, which may damage the prestressed pile, and then the machine is stopped for inspection. However, it takes time from the time the personnel observe that the prestressed pile is descending too slowly to the time the machine is stopped, and this time may have caused damage to the pile.

[0006] In addition, the advanced prestressed pipe pile installation auxiliary device has four pile clamping hydraulic cylinders and pile clamping jaws arranged in a circular array inside the pile clamping box, which clamp the prestressed pipe pile in the intersecting horizontal and vertical directions, improve the stability of the prestressed pipe pile following the movement of the pile clamping box, and prevent the prestressed pipe pile from shifting. However, if a pair of horizontal or vertical pile clamping hydraulic cylinders causes the prestressed pipe pile to shift, it will not only cause the prestressed pipe pile to shift, but also cause the longitudinal or horizontal pile clamping jaws to mismatch with the prestressed pipe pile. If the pile clamping hydraulic cylinder still guarantees the preset action amount, the pile clamping jaws and the prestressed pipe pile will generate too much linear holding force, resulting in damage to the pile clamping jaws and the prestressed pipe pile.

[0007] Therefore, there is an urgent need for an auxiliary installation device for prestressed pipe piles that can solve the above problems. Summary of the invention

[0008] In order to solve the above problems, the present invention proposes an auxiliary installation device for prestressed pipe piles, comprising a body, a slideway is provided inside the body, and a pile clamping box is slidably installed on the inner wall of the slideway;

[0009] Two hydraulic supports are fixedly installed on the upper end surface of the fuselage, and the inner wall of each hydraulic support is fixedly connected with a downward pressure hydraulic cylinder, and the bottom end of each downward pressure hydraulic cylinder is fixedly connected to the side end surface of the pile clamping box, and a pile clamping mechanism is fixedly installed inside the pile clamping box;

[0010] Wherein, the downward pressing hydraulic cylinder comprises a downward pressing cylinder body and a downward pressing telescopic end, and the downward pressing telescopic end is connected to the pile clamping box body;

[0011] The lower end of the downward telescopic end is fixedly connected with a telescopic connecting piece, the side end surface of the pile clamping box is fixedly connected with a box connecting piece, and the telescopic connecting piece is connected with the box connecting piece;

[0012] Among them, when the resistance encountered by the prestressed pipe pile during the descent process does not exceed the preset value, the telescopic connector and the box connector move synchronously; when the resistance encountered by the prestressed pipe pile during the descent process exceeds the preset value, the telescopic connector and the box connector move relative to each other.

[0013] Furthermore, the telescopic connector is configured as a column with a square cross section, and the box connector is provided with a force unloading groove, and the shape and size of the force unloading groove match the telescopic connector;

[0014] A sliding groove is provided on the side of the telescopic connecting piece, and a telescopic tooth is slidably provided in the sliding groove;

[0015] A spring element is also arranged in the sliding groove, and one end of the spring element is connected to the telescopic tooth, and the other end is connected to the bottom surface of the sliding groove;

[0016] The side wall of the force unloading groove is provided with an engaging tooth groove, and the shape and size of the engaging tooth groove match the telescopic teeth.

[0017] Furthermore, the spring element is configured to be composed of a mechanical coil spring and an electrical spring connected in series.

[0018] Furthermore, the pile clamping mechanism comprises four pile clamping hydraulic cylinders distributed in a circumferential array, and the bottoms of the pile clamping cylinder bodies of the pile clamping hydraulic cylinders are fixedly mounted on the inner side walls of the pile clamping box body;

[0019] The top of the pile clamping telescopic end of the pile clamping hydraulic cylinder is connected with a pile clamping jaw, and the shape and size of the jaw end of the pile clamping jaw match the prestressed pipe pile.

[0020] Furthermore, a pile clamp protection element is sleeved on the end of the pile clamp telescopic end, and one end of the pile clamp protection element away from the pile clamp telescopic end is fixedly connected to the pile clamp jaws;

[0021] Wherein, when the pair of horizontal pile clamping jaws or the pair of longitudinal pile clamping jaws do not cause the pile clamping offset, the pair of longitudinal pile clamping protection elements or the pair of horizontal pile clamping protection elements move synchronously with the telescopic end of the pile clamp;

[0022] When the pair of horizontal pile clamping jaws or the pair of longitudinal pile clamping jaws are offset, the pair of longitudinal pile clamping protection elements or the pair of horizontal pile clamping protection elements and the telescopic ends of the pile clamp are relatively moved;

[0023] The pile clamping mechanism also includes auxiliary pile clamping hydraulic cylinders distributed in a circumferential array, and the bottom of the auxiliary cylinder body of the auxiliary pile clamping hydraulic cylinder is fixedly installed on the inner wall of the pile clamping box, and the top of the auxiliary telescopic end of the auxiliary pile clamping hydraulic cylinder is fixedly connected to the pile clamping jaws.

[0024] Furthermore, the telescopic end of the pile clamp is configured as a column with a circular cross section, and the pile clamp protection element is provided with a deviation correction protection groove, and the shape and size of the deviation correction protection groove match the telescopic end of the pile clamp;

[0025] A telescopic groove is provided on the side of the deviation correction protection groove, and a telescopic hemisphere is slidably arranged in the telescopic groove;

[0026] A spring is also arranged in the telescopic slot, and one end of the spring is connected to the telescopic hemisphere, and the other end is connected to the bottom surface of the telescopic slot;

[0027] A hemispherical groove is provided on the side of the telescopic end of the pile clamp, and the shape and size of the hemispherical groove match the telescopic hemisphere.

[0028] Furthermore, a distance sensor and / or a pressure sensor is installed in the telescopic slot.

[0029] Furthermore, the number of the telescopic teeth is set to be multiple, and the number of the meshing tooth grooves is greater than the number of the telescopic teeth.

[0030] Furthermore, the number of telescopic hemispheres is set to be multiple, and the number of hemisphere grooves is greater than the number of telescopic hemispheres.

[0031] Furthermore, a crane mounting seat is fixedly mounted on the upper end surface of the fuselage, a slewing seat is mounted on the upper end surface of the crane mounting seat, and a crane is mounted on the upper end surface of the slewing seat;

[0032] The crane includes a hydraulic rod, and the top end of the hydraulic rod is rotatably connected to a winch, the outer surface of the winch is fixedly connected to a steel wire rope, and the bottom end of the steel wire rope is fixedly connected to a hook lock;

[0033] And / or, walking structures are fixedly connected to both sides of the fuselage, and a short boat is fixedly connected to the bottom surface of the fuselage.

[0034] Compared with the prior art, the advantages of the present invention are:

[0035] 1. When the resistance encountered by the prestressed pile during the descent process does not exceed the preset value, the telescopic connector and the box connector move synchronously; when the resistance encountered by the prestressed pile during the descent process exceeds the preset value, the telescopic connector and the box connector move relative to each other. Therefore, when the resistance encountered by the prestressed pile during the descent process exceeds the preset value, although the downward telescopic end is still pressed down at the preset speed, the box connector and the pile clamp box automatically stop descending, and the prestressed pile automatically stops pressing down, avoiding damage to the prestressed pile and eliminating the possibility of damage to the pile from the time when the personnel observe that the prestressed pile is descending too slowly to the time when the machine stops.

[0036] 2. When the resistance of the prestressed pipe pile does not exceed the preset value, under the action of the spring element, the telescopic teeth remain in the extended state, the telescopic teeth and the meshing tooth groove remain in the meshing state, and the telescopic connector and the box connector move synchronously; when the resistance of the prestressed pipe pile exceeds the preset value, although the downward telescopic end is still pressed down at the preset speed, the elastic force of the spring element is not enough to keep the telescopic teeth in the extended state, the telescopic teeth retract into the sliding groove, and jump into the next meshing tooth groove, the telescopic connector and the box connector move relative to each other, so that the box connector and the pile clamp box automatically stop descending, avoiding damage to the prestressed pipe pile P.

[0037] 3. When the pair of horizontal pile clamping jaws or the pair of longitudinal pile clamping jaws are offset from each other, although the telescopic ends of the pair of longitudinal pile clamps or the pair of horizontal pile clamping jaws are still extended according to the preset extension amount, the pair of longitudinal pile clamping protection elements or the pair of horizontal pile clamping protection elements and the pile clamping jaws automatically stop moving, so that the pair of longitudinal pile clamping jaws or the pair of horizontal pile clamping jaws automatically stop clamping the prestressed pipe piles, thereby automatically avoiding damage to the prestressed pipe piles and the pile clamping jaws.

[0038] 4. When the pile clamping jaws do not produce pile clamping deviation, under the action of the spring, the telescopic hemisphere remains in an extended state, the telescopic hemisphere remains in an engaged state with the hemisphere groove, and the pile clamping protection element moves synchronously with the telescopic end of the pile clamp; when the pile clamping jaws produce pile clamping deviation, although the telescopic end of the pile clamp still guarantees the preset extension amount, the elastic force of the spring is not enough to keep the telescopic hemisphere in an extended state, the telescopic hemisphere retracts into the telescopic groove and jumps into the next hemisphere groove, the pile clamping protection element and the telescopic end of the pile clamp move relative to each other, so that the pile clamping jaws automatically stop clamping the prestressed pipe pile, avoiding damage to the prestressed pipe pile and the pile clamping jaws.

[0039] 5. When the prestressed pile is clamped and deviated, the sensor detects the moving distance of the telescopic hemisphere and / or the pressure on the spring, and provides feedback. With this setting, when the pile clamping jaws deviate, not only can the pile clamping be automatically stopped to prevent damage to the pile clamping jaws and the prestressed pile; the sensor can also detect the moving distance of the telescopic hemisphere and / or the pressure on the spring, automatically detecting the pile clamping deviation so that timely adjustments can be made. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0041] Figure 1 This is the overall structural diagram of the auxiliary device for installing prestressed pipe piles;

[0042] Figure 2 This is the structural diagram of the downward pressure hydraulic system;

[0043] Figure 3 It is a cross-sectional view of the downward pressure hydraulic system;

[0044] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0045] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0046] Figure 6 It is the structural diagram of the pile clamping mechanism and the pile clamping box;

[0047] Figure 7 The overall structure diagram of the pile clamping mechanism;

[0048] Figure 8 It is a top view of the pile clamping mechanism;

[0049] Fig. 9 for Figure 8 Sectional view at AA;

[0050] Fig.10 for Fig. 9 A partial enlarged view of point C in the middle;

[0051] In the figure, prestressed pipe pile P, fuselage 100, crane mounting seat 110, walking structure 120, short boat 130, pile clamp box 200, hydraulic support frame 300, downward pressure hydraulic cylinder 310, downward pressure cylinder body 311, downward pressure telescopic end 312, pile clamp mechanism 400, pile clamp hydraulic cylinder 410, pile clamp cylinder body 411, pile clamp telescopic end 412, pile clamp jaw 413, jaw end 414, hemispherical groove 415, pile clamp protection element 420, deviation correction protection groove 421 , telescopic slot 422, telescopic hemisphere 423, spring 424, auxiliary pile clamp hydraulic cylinder 430, auxiliary cylinder body 431, auxiliary telescopic end 432, slewing seat 500, crane 510, hydraulic rod 511, winch 512, wire rope 513, hook lock 514, downward pressure protection mechanism 600, telescopic connector 610, sliding slot 611, telescopic teeth 612, spring element 613, box connector 620, unloading slot 621, meshing tooth slot 622. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0053] like Figure 1-10 As shown, this embodiment provides an auxiliary installation device for prestressed pipe piles, including a fuselage 100, a slideway (not shown) is opened inside the fuselage 100, a pile clamping box 200 is slidably installed on the inner wall of the slideway, two hydraulic support frames 300 are fixedly installed on the upper end surface of the fuselage 100, and the inner wall of each hydraulic support frame 300 is fixedly connected to a downward pressure hydraulic cylinder 310, the bottom end of each downward pressure hydraulic cylinder 310 is fixedly connected to the side end surface of the pile clamping box 200, and a pile clamping mechanism 400 is fixedly installed inside the pile clamping box 200.

[0054] A crane mounting seat 110 is also fixedly mounted on the upper end surface of the fuselage 100, a swivel seat 500 is mounted on the upper end surface of the crane mounting seat 110, and a crane 510 is mounted on the upper end surface of the swivel seat 500. By rotating the swivel seat 500, the direction of the crane 510 is changed, so that the crane 510 can lift the prestressed pipe pile P to the top of the pile clamp box 200, so that the prestressed pipe pile P enters the specified position.

[0055] It can be understood that when the auxiliary installation device of the prestressed pipe pile is working, the prestressed pipe pile P is lifted by the crane 510, and the crane 510 is adjusted to turn the prestressed pipe pile P to the top of the pile clamping box 200, and is aligned with the pile clamping mechanism 400, so that the prestressed pipe pile P enters the interior of the pile clamping box 200, and the prestressed pipe pile P is clamped by the pile clamping mechanism 400, and then the downward hydraulic cylinder 310 is started to drive the pile clamping box 200 to rise or fall, thereby completing the pile pressing work.

[0056] The crane 510 of this embodiment includes a hydraulic rod 511, which provides support for the crane 510. The top of the hydraulic rod 511 is rotatably connected to a winch 512. The outer surface of the winch 512 is fixedly connected to a wire rope 513. The bottom end of the wire rope 513 is fixedly connected to a hook lock 514. The wire rope 513 is wound or unwound by the winch 512, so that the wire rope 513 can drive the hook lock 514 to descend or ascend, so that the device can hoist and place the prestressed pipe pile P.

[0057] In the downward pressing hydraulic system of this embodiment, the downward pressing hydraulic cylinder 310 includes a downward pressing cylinder body 311 and a downward pressing telescopic end 312, and the downward pressing telescopic end 312 is connected to the pile clamping box 200 to drive the pile clamping box 200 to rise or fall. It should be noted that there will be a preset speed when the prestressed pipe pile P is pressed down, that is, the downward pressing telescopic end 312 will extend at a specified speed to drive the pile clamping box 200 to descend at a specified speed. In practice, the speed of descent of the prestressed pipe pile P is observed by personnel. If the descent speed slows down, it means that the resistance to the prestressed pipe pile P is too large, which may damage the prestressed pipe pile P, and then the machine is stopped for inspection.

[0058] However, it takes time from when the personnel observe that the prestressed pipe pile P descends too slowly to when the machine stops, and this time may have caused damage to the pipe pile.

[0059] In order to eliminate the above-mentioned defects, the downward pressure hydraulic system of this embodiment also includes a downward pressure protection mechanism 600, and the downward pressure protection mechanism 600 includes a telescopic connection member 610 and a box connection member 620, wherein the upper end of the telescopic connection member 610 is fixedly connected to the lower end of the downward pressure telescopic end 312, the box connection member 620 is fixedly connected to the side end surface of the pile clamping box 200, and the telescopic connection member 610 is connected to the box connection member 620, so that under normal conditions, the downward pressure telescopic end 312 drives the telescopic connection member 610, the box connection member 620 and the pile clamping box 200 to descend synchronously.

[0060] When the resistance encountered by the prestressed pipe pile P during the descent process does not exceed the preset value, the telescopic connector 610 and the box connector 620 move synchronously; when the resistance encountered by the prestressed pipe pile P during the descent process exceeds the preset value, the telescopic connector 610 and the box connector 620 move relative to each other. Therefore, when the resistance encountered by the prestressed pipe pile P during the descent process exceeds the preset value, although the downward telescopic end 312 is still pressed down at the preset speed, the box connector 620 and the pile clamping box 200 automatically stop descending, so that the prestressed pipe pile P automatically stops pressing down, avoiding damage to the prestressed pipe pile P, and eliminating the possibility that the prestressed pipe pile P is damaged during the period from when the personnel observe that the prestressed pipe pile P is descending too slowly to when the machine stops.

[0061] Specifically, the telescopic connecting member 610 is configured as a column with a square cross-section, and the box connecting member 620 is provided with a force unloading groove 621, and the shape and size of the force unloading groove 621 match the telescopic connecting member 610; a sliding groove 611 is provided on the side of the telescopic connecting member 610, and a telescopic tooth 612 is slidably provided in the sliding groove 611; a spring element 613 is also provided in the sliding groove 611, and one end of the spring element 613 is connected to the telescopic tooth 612, and the other end is connected to the bottom surface of the sliding groove 611; the side wall of the force unloading groove 621 is provided with an engaging tooth groove 622, and the shape and size of the engaging tooth groove 622 match the telescopic tooth 612.

[0062] Therefore, when the resistance encountered by the prestressed pipe pile P during the descent process does not exceed the preset value, under the action of the spring element 613, the telescopic tooth 612 remains in an extended state, the telescopic tooth 612 remains in an engaged state with the meshing tooth groove 622, and the telescopic connector 610 moves synchronously with the box connector 620; when the resistance encountered by the prestressed pipe pile P during the descent process exceeds the preset value, although the downward telescopic end 312 is still pressed down at a preset speed, the elastic force of the spring element 613 is insufficient to keep the telescopic tooth 612 in an extended state, the telescopic tooth 612 retracts into the sliding groove 611, and jumps into the next meshing tooth groove 622, the telescopic connector 610 and the box connector 620 move relative to each other, so that the box connector 620 and the pile clamping box 200 automatically stop descending, and the prestressed pipe pile P automatically stops being pressed down, thereby avoiding damage to the prestressed pipe pile P and eliminating the possibility that the prestressed pipe pile P is damaged during the period from when the personnel observe that the prestressed pipe pile P is descending too slowly to when the machine is shut down.

[0063] Preferably, there may be a plurality of telescopic teeth 612 to increase the stability of the engagement; the number of the engaging tooth grooves 622 is greater than the number of the telescopic teeth 612 , thereby allowing the telescopic connector 610 and the box connector 620 to move relative to each other.

[0064] It is worth noting that the spring element 613 of this embodiment can be configured to be composed of a mechanical coil spring and an electrical spring in series. On the one hand, the coil spring can ensure that the telescopic tooth 612 has sufficient movement travel. On the other hand, the overall elastic coefficient of the spring element 613 can be changed according to the actual working conditions by adjusting the elastic coefficient of the electrical spring to match it with different resistance values. In addition, once the resistance encountered by the prestressed pipe pile P during the descent process exceeds the preset value, that is, the compression force encountered by the spring element 613 increases, the spring element 613 can also be fed back to the control system to stop the equipment in time.

[0065] The pile clamping mechanism 400 of this embodiment includes four pile clamping hydraulic cylinders 410 distributed in a circumferential array, and the bottom of the pile clamping cylinder body 411 of the pile clamping hydraulic cylinder 410 is fixedly installed on the inner wall of the pile clamping box 200, and the top of the pile clamping telescopic end 412 of the pile clamping hydraulic cylinder 410 is connected with a pile clamping jaw 413, and the shape and size of the jaw end 414 of the pile clamping jaw 413 match the prestressed pipe pile P. Therefore, compared with a pair of pile clamping jaws commonly used in the prior art, the prestressed pipe pile P is clamped in the intersecting horizontal and longitudinal directions, the stability of the prestressed pipe pile P following the movement of the pile clamping box 200 is improved, and the prestressed pipe pile P is prevented from deflecting.

[0066] It is understandable that the prestressed piles should be installed in such a way that they will not deflect as much as possible. Figure 8Taking the perspective as an example, if the lateral pair of pile clamping hydraulic cylinders 410 causes the prestressed pipe pile P to be laterally offset, it will not only cause the prestressed pipe pile P to be offset, but also cause the longitudinal pair of pile clamping jaws 413 to be mismatched with the prestressed pipe pile P. If the longitudinal pile clamping telescopic end 412 still ensures the preset extension amount, it will also cause the pile clamping jaws 413 and the prestressed pipe pile P to generate excessive linear supporting force, resulting in damage to the pile clamping jaws 413 and the prestressed pipe pile P.

[0067] In order to eliminate the above defects, in the pile clamping mechanism 400 of this embodiment, the end of the pile clamping telescopic end 412 is also sleeved with a pile clamping protection element 420, and the end of the pile clamping protection element 420 away from the pile clamping telescopic end 412 is fixedly connected to the pile clamping jaw 413.

[0068] Among them, when the pair of transverse pile clamping jaws 413 or the pair of longitudinal pile clamping jaws 413 clamp the prestressed pipe pile P and no pile clamping deviation occurs, the pair of longitudinal pile clamping protection elements 420 or the pair of transverse pile clamping protection elements 420 move synchronously with the pile clamping telescopic end 412; when the pair of transverse pile clamping jaws 413 or the pair of longitudinal pile clamping jaws 413 clamp the prestressed pipe pile P and pile clamping deviation occurs, the pair of longitudinal pile clamping protection elements 420 or the pair of transverse pile clamping protection elements 420 and the pile clamping telescopic end 412 move relative to each other.

[0069] Therefore, when the pile clamping deviation occurs when the transverse pair of pile clamping jaws 413 or the longitudinal pair of pile clamping jaws 413 clamp the prestressed pipe pile P, although the longitudinal pair of pile clamping telescopic ends 412 or the transverse pair of pile clamping telescopic ends 412 are still extended according to the preset extension amount, the longitudinal pair of pile clamping protection elements 420 or the transverse pair of pile clamping protection elements 420 and the pile clamping jaws 413 automatically stop moving, so that the longitudinal pair of pile clamping jaws 413 or the transverse pair of pile clamping jaws 413 automatically stop clamping the prestressed pipe pile P, and automatically avoid damage to the prestressed pipe pile P and the pile clamping jaws 413.

[0070] Specifically, the telescopic end 412 of the pile clamp is configured as a column with a circular cross-section, and the pile clamp protection element 420 is provided with a correction protection groove 421, and the shape and size of the correction protection groove 421 match the telescopic end 412 of the pile clamp; a telescopic groove 422 is provided on the side of the correction protection groove 421, and a telescopic hemisphere 423 is slidably arranged in the telescopic groove 422; a spring 424 is also arranged in the telescopic groove 422, and one end of the spring 424 is connected to the telescopic hemisphere 423, and the other end is connected to the bottom surface of the telescopic groove 422; a hemispherical groove 415 is provided on the side of the telescopic end 412 of the pile clamp, and the shape and size of the hemispherical groove 415 match the telescopic hemisphere 423.

[0071] Therefore, when the pair of horizontal pile clamping jaws 413 or the pair of longitudinal pile clamping jaws 413 clamp the prestressed pipe pile P and no pile clamping deviation occurs, under the action of the spring 424, the telescopic hemisphere 423 is always kept in an extended state, the telescopic hemisphere 423 and the hemisphere groove 415 are kept in an engaged state, and the pair of longitudinal pile clamping protection elements 420 or the pair of horizontal pile clamping protection elements 420 move synchronously with the pile clamping telescopic end 412; when the pair of horizontal pile clamping jaws 413 or the pair of longitudinal pile clamping jaws 413 clamp the prestressed pipe pile P and pile clamping deviation occurs, although the pair of longitudinal pile clamping telescopic ends 412 or the pair of horizontal pile clamping telescopic ends 412 still ensure the preset The telescopic hemisphere 423 retracts back into the telescopic slot 422 and jumps into the next hemisphere slot 415, and the longitudinal pair of pile clamping protection elements 420 or the transverse pair of pile clamping protection elements 420 move relative to the telescopic end 412 of the pile clamping pile, so that the longitudinal pair of pile clamping jaws 413 or the transverse pair of pile clamping jaws 413 automatically stop clamping the prestressed pipe pile P, avoiding damage to the prestressed pipe pile P and the pile clamping jaws 413, and eliminating the problem that the linear supporting force generated by the pile clamping jaws 413 and the prestressed pipe pile P is too large, resulting in damage to the pile clamping jaws 413 and the prestressed pipe pile P.

[0072] Preferably, there may be a plurality of telescopic hemispheres 423 to increase the engagement stability; the number of hemisphere grooves 415 is greater than the number of telescopic hemispheres 423 , thereby allowing the pile clamp protection element 420 and the pile clamp telescopic end 412 to move relative to each other.

[0073] It is worth noting that, in this embodiment, a distance sensor and / or a pressure sensor may be installed in the telescopic groove 422. When the prestressed pipe pile P is clamped and deviated, the sensor detects the moving distance of the telescopic hemisphere 423 and / or the pressure on the spring 424, and provides feedback. With this arrangement, when the pile clamping jaws 413 are deviated, not only can the pile clamping be automatically stopped to prevent damage to the pile clamping jaws 413 and the prestressed pipe pile P; the sensor can also detect the moving distance of the telescopic hemisphere 423 and / or the pressure on the spring 424, and automatically detect the pile clamping deviation, so as to make timely adjustments.

[0074] In this embodiment, the pile clamping mechanism 400 further includes auxiliary pile clamping hydraulic cylinders 430 distributed in a circumferential array, and the bottom of the auxiliary cylinder body 431 of the auxiliary pile clamping hydraulic cylinder 430 is fixedly mounted on the inner wall of the pile clamping box 200, and the top of the auxiliary telescopic end 432 of the auxiliary pile clamping hydraulic cylinder 430 is fixedly connected to the pile clamping jaws 413. Thus, when it is ensured that the four pile clamping hydraulic cylinders 410 drive the pile clamping jaws 413 to clamp the prestressed pipe piles P without deviation, the auxiliary pile clamping hydraulic cylinders 430 are started, so that the four pile clamping jaws 413 clamp the prestressed pipe piles P more stably, ensuring that the stability and deviation of the pile clamping will not be affected by external forces during the pile pressing process.

[0075] In this embodiment, walking structures 120 are fixedly connected to both sides of the fuselage 100, and a short boat 130 is fixedly connected to the bottom surface of the fuselage 100. The auxiliary installation device of the prestressed pipe pile can be moved by the cross operation of the walking structure 120 and the short boat 130, so as to change the piling position.

[0076] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An auxiliary device for installing prestressed pipe piles, comprising a body, a slideway is provided inside the body, and a pile clamping box is slidably installed on the inner wall of the slideway; Two hydraulic supports are fixedly installed on the upper end surface of the fuselage, and the inner wall of each hydraulic support is fixedly connected with a downward pressure hydraulic cylinder, and the bottom end of each downward pressure hydraulic cylinder is fixedly connected to the side end surface of the pile clamping box, and a pile clamping mechanism is fixedly installed inside the pile clamping box; in, The downward pressing hydraulic cylinder comprises a downward pressing cylinder body and a downward pressing telescopic end, and the downward pressing telescopic end is connected to the pile clamping box body; The invention is characterized in that the lower end of the downward-pressing telescopic end is fixedly connected with a telescopic connecting piece, the side end surface of the pile clamping box is fixedly connected with a box connecting piece, and the telescopic connecting piece is connected with the box connecting piece; Among them, when the resistance encountered by the prestressed pipe pile during the descent process does not exceed the preset value, the telescopic connector and the box connector move synchronously; when the resistance encountered by the prestressed pipe pile during the descent process exceeds the preset value, the telescopic connector and the box connector move relative to each other.

2. The auxiliary installation device for prestressed pipe piles according to claim 1, characterized in that: The telescopic connector is configured as a column with a square cross section, and the box connector is provided with a force unloading groove, and the shape and size of the force unloading groove match the telescopic connector; A sliding groove is provided on the side of the telescopic connecting piece, and a telescopic tooth is slidably provided in the sliding groove; A spring element is also arranged in the sliding groove, and one end of the spring element is connected to the telescopic tooth, and the other end is connected to the bottom surface of the sliding groove; The side wall of the force unloading groove is provided with an engaging tooth groove, and the shape and size of the engaging tooth groove match the telescopic teeth.

3. The auxiliary installation device for prestressed pipe piles according to claim 2, characterized in that: The spring element is configured by connecting a mechanical coil spring and an electrical spring in series.

4. The auxiliary installation device for prestressed pipe piles according to claim 1, characterized in that: The pile clamping mechanism comprises four pile clamping hydraulic cylinders distributed in a circumferential array, and the bottom of the pile clamping cylinder body of the pile clamping hydraulic cylinder is fixedly mounted on the inner side wall of the pile clamping box body; The top of the pile clamping telescopic end of the pile clamping hydraulic cylinder is connected with a pile clamping jaw, and the shape and size of the jaw end of the pile clamping jaw match the prestressed pipe pile.

5. The auxiliary installation device for prestressed pipe piles according to claim 4, characterized in that: The end of the pile clamp telescopic end is also sleeved with a pile clamp protection element, and one end of the pile clamp protection element away from the pile clamp telescopic end is fixedly connected to the pile clamp jaws; Wherein, when the pair of horizontal pile clamping jaws or the pair of longitudinal pile clamping jaws do not cause the pile clamping offset, the pair of longitudinal pile clamping protection elements or the pair of horizontal pile clamping protection elements move synchronously with the telescopic end of the pile clamp; When the pair of horizontal pile clamping jaws or the pair of longitudinal pile clamping jaws are offset, the pair of longitudinal pile clamping protection elements or the pair of horizontal pile clamping protection elements and the telescopic ends of the pile clamp are relatively moved; The pile clamping mechanism also includes auxiliary pile clamping hydraulic cylinders distributed in a circumferential array, and the bottom of the auxiliary cylinder body of the auxiliary pile clamping hydraulic cylinder is fixedly installed on the inner wall of the pile clamping box, and the top of the auxiliary telescopic end of the auxiliary pile clamping hydraulic cylinder is fixedly connected to the pile clamping jaws.

6. The auxiliary installation device for prestressed pipe piles according to claim 5, characterized in that: The telescopic end of the pile clamp is configured as a column with a circular cross section, and the pile clamp protection element is provided with a deviation correction protection groove, and the shape and size of the deviation correction protection groove match the telescopic end of the pile clamp; A telescopic groove is provided on the side of the deviation correction protection groove, and a telescopic hemisphere is slidably arranged in the telescopic groove; A spring is also arranged in the telescopic slot, and one end of the spring is connected to the telescopic hemisphere, and the other end is connected to the bottom surface of the telescopic slot; A hemispherical groove is provided on the side of the telescopic end of the pile clamp, and the shape and size of the hemispherical groove match the telescopic hemisphere.

7. The auxiliary installation device for prestressed pipe piles according to claim 6, characterized in that: A distance sensor and / or a pressure sensor is also installed in the telescopic slot.

8. The auxiliary installation device for prestressed pipe piles according to claim 2, characterized in that: The number of the telescopic teeth is set to be multiple, and the number of the meshing tooth grooves is greater than the number of the telescopic teeth.

9. The auxiliary installation device for prestressed pipe piles according to claim 6, characterized in that: The number of the telescopic hemispheres is set to be multiple, and the number of the hemisphere grooves is greater than the number of the telescopic hemispheres.

10. The auxiliary installation device for prestressed pipe piles according to any one of claims 1 to 9, characterized in that: A crane mounting seat is also fixedly mounted on the upper end surface of the fuselage, a slewing seat is mounted on the upper end surface of the crane mounting seat, and a crane is mounted on the upper end surface of the slewing seat; The crane includes a hydraulic rod, and the top end of the hydraulic rod is rotatably connected to a winch, the outer surface of the winch is fixedly connected to a steel wire rope, and the bottom end of the steel wire rope is fixedly connected to a hook lock; And / or, walking structures are fixedly connected to both sides of the fuselage, and a short boat is fixedly connected to the bottom surface of the fuselage.

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