A reinforcing cage hoisting device for pile testing of a cast-in-place pile

Abstract

The application discloses a reinforcing cage hoisting device for pile testing of a cast-in-place pile and relates to the field of hoisting devices.The reinforcing cage hoisting device comprises a hoisting vehicle, a movable hoisting frame is installed on the hoisting vehicle, and a counterweight is movably installed on the movable hoisting frame; further comprising a counterweight moving device, the counterweight moving device is installed on the hoisting vehicle, the movable hoisting frame and the counterweight are both installed on the counterweight moving device, and the counterweight moving device is used for moving the counterweight.It should be noted that in the embodiment of the application, when the hoisting vehicle is pulled up, the counterweight is automatically extended to the lifting side to form an active balance moment without external power, and meanwhile, the counterweight frame is rotated and unfolded to further shift the center of gravity of the hoisting vehicle; in addition, the earth boring motor drives the drill rod to rotate and drill into the ground to provide additional pulling force, effectively solving the problems of unbalance and overturning of the hoisting vehicle and bringing about remarkable effects of safety, economy and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, and in particular to a steel cage hoisting device for test piles of cast-in-place piles. Background Technology

[0002] In order to determine the single pile bearing capacity and deformation resistance of bored cast-in-place piles under the engineering geological conditions, evaluate the hole formation conditions of each soil layer, and provide construction parameters and relevant quality control standards for large-scale construction in the future, it is necessary to select representative areas in the construction area for test pile work.

[0003] During test piling, holes are drilled in the existing construction area, then a steel cage is fabricated, and a crane is used to hoist the steel cage into the hole before pouring cement. However, during the hoisting of the steel cage, accidents such as wind or crane instability can cause the steel cage to swing or be suddenly unloaded, generating a huge torque that can cause the crane to lose balance and tilt around the fulcrum, leading to the crane tipping over. This not only damages the crane but also poses a significant threat to the lives of the personnel inside. In addition, traditional outriggers are prone to sinking on soft ground, further increasing the risk of the crane tilting and tipping over. Summary of the Invention

[0004] The purpose of this invention is to provide a steel cage hoisting device for test piles of cast-in-place piles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A steel cage hoisting device for test piles of cast-in-place piles includes a hoisting vehicle, a movable lifting frame mounted on the hoisting vehicle, and a counterweight movably mounted on the movable lifting frame;

[0007] It also includes a counterweight moving device, which is installed on the crane vehicle. The movable gantry and the counterweight are both installed on the counterweight moving device. The counterweight moving device is used to move the counterweight. The counterweight moving device includes a moving plate, which is sleeved on the movable gantry. The counterweight is slidably installed on the moving plate and moves on the moving plate to balance the crane vehicle.

[0008] It also includes an active pull-back device, which is installed on the counterweight moving device and is used to pull down the crane vehicle; the active pull-back device includes a drilling motor, which is installed on the moving plate, and a drill rod is installed on the output shaft of the drilling motor. The moving plate has a connecting hole. The drilling motor drives the drill rod to move down and drives the drill rod to rotate, so as to pull down the crane vehicle;

[0009] It also includes an auxiliary balancing device, which is installed on the crane vehicle and is used to balance and support the crane vehicle. The auxiliary balancing device includes two deployable counterweight frames, both of which are rotatably mounted on the bottom side of the crane vehicle. The deployable counterweight frames are deployed to balance and support the crane vehicle, and the front end of the deployable counterweight frames is open.

[0010] Furthermore, in a preferred embodiment of the present invention, the counterweight moving device further includes two sliding bars, both of which are slidably mounted on the moving plate;

[0011] A movable spring is installed on the sliding bar, and the movable spring is installed on the inner wall of the movable plate.

[0012] Furthermore, in a preferred embodiment of the present invention, a follower rotating frame is movably sleeved on the movable hanger, two positioning frames are installed on the follower rotating frame, and positioning shafts are installed on both positioning frames. Positioning slots are opened on the bottom sides of the two sliding bars, and the two positioning shafts are respectively inserted into the two positioning slots.

[0013] The movable hanger has two vertical slide grooves, and the follower rotating frame is slidably installed in the two vertical slide grooves. An unlocking spring is installed on the inner wall of the vertical slide groove and is installed on the follower rotating frame.

[0014] Furthermore, in a preferred embodiment of the present invention, a top pressure frame is movably mounted on the hoisting vehicle, the follower rotating frame moves down to squeeze the top pressure frame, and a top pressure wheel is rotatably mounted on the bottom side of the top pressure frame;

[0015] A retraction spring is installed on the top pressure frame, and the retraction spring is installed on the top side of the hoisting vehicle.

[0016] Furthermore, in a preferred embodiment of the present invention, the active pull-back device further includes two lifting linkage frames, which are respectively installed on both sides of the drilling motor;

[0017] Both of the lifting linkage frames are equipped with guide rods, and the movable plate has two guide holes, with the two guide rods respectively movably installed in the two guide holes.

[0018] Furthermore, in a preferred embodiment of the present invention, rotating pressure rods are rotatably mounted on both sides of the movable plate, and the two rotating pressure rods are respectively movably mounted on the two lifting linkage frames;

[0019] Both sides of the counterweight are equipped with horizontal pushing cylinders. The movement of the counterweight drives the horizontal pushing cylinders to push the rotating pressure rod to rotate, thereby driving the drilling motor to move downward.

[0020] Furthermore, in a preferred embodiment of the present invention, two downward sliding shafts are installed on the rotating pressure rod, and a downward sliding groove is provided on the lifting linkage frame, with one of the downward sliding shafts movably installed in the downward sliding groove;

[0021] Both sides of the movable plate are provided with rotary mounting slots, and another downward sliding shaft is rotatably installed in the rotary mounting slot. A rotary torsion spring is installed on the inner wall of the rotary mounting slot, and the rotary torsion spring is installed on the downward sliding shaft.

[0022] Furthermore, in a preferred embodiment of the present invention, the auxiliary balancing device further includes two unfolding gears, and two connecting shafts are rotatably mounted on the hoisting vehicle. The two connecting shafts are respectively mounted on the two unfolding counterweight frames, and the two unfolding gears are respectively mounted on the two connecting shafts.

[0023] Both sides of the hoisting vehicle are slidably equipped with unfolding racks, and the two unfolding racks respectively mesh with the two unfolding gears;

[0024] The hoisting vehicle has transverse sliding grooves on both sides, and the two unfolding racks are slidably installed in the two transverse sliding grooves respectively. A return spring is installed on the inner wall of the transverse sliding groove, and the return spring is installed on the unfolding rack.

[0025] Furthermore, in a preferred embodiment of the present invention, two lower pressure frames are movably installed on the hoisting vehicle, each of the two lower pressure frames is equipped with an extrusion rod, and each of the two unfolding racks is equipped with an extrusion wedge plate. The lower pressure frame moves downward and pushes the extrusion wedge plate to move through the extrusion rod, thereby driving the unfolding rack to move.

[0026] The top side of the hoisting vehicle is provided with multiple limiting grooves, and multiple limiting rods are installed on the lower pressure frame. The multiple limiting rods are slidably installed in the multiple limiting grooves respectively. A return spring is installed on the inner wall of the limiting groove, and the return spring is installed on the limiting rod.

[0027] Furthermore, in a preferred embodiment of the present invention, a driving pressure plate is provided on the bottom side of the movable plate, and a plurality of connecting springs are installed between the movable plate and the driving pressure plate. The driving pressure plate moves downward to squeeze the lower pressure frame to move.

[0028] An arc-shaped push block is movably installed inside the movable plate. The arc-shaped push block is mounted on the driving pressure plate. The movement of the counterweight pushes the arc-shaped push block to move, thereby driving the driving pressure plate to move downward.

[0029] The beneficial effects of the steel cage hoisting device for test piles of cast-in-place piles proposed in this invention are:

[0030] In this invention, by setting up a counterweight moving device, during the process of the crane lifting the steel cage via the movable gantry, when the crane is lifted, two sliding bars unlock, and then under the contraction force of two moving springs, the sliding bars drive the counterweight to move, thereby shifting the center of gravity of the crane and balancing it, thus achieving the purpose of pulling the crane back. In addition, through mechanical linkage, the counterweight automatically extends to the tilted side when the crane is tilted, forming an active balancing torque. No external power is required, overcoming the instability of electronic systems. Compared with electric or hydraulic systems, it has high reliability, low cost, adaptability to harsh environments, and no need to maintain complex circuits. It effectively solves the problems of crane imbalance and tipping, and brings significant benefits in terms of safety, economy, and ease of operation.

[0031] Furthermore, in this invention, by setting up an active pull-back device, when the counterweight moves, the counterweight drives the two horizontal push cylinders to push the two rotating pressure rods to rotate. The rotation of the rotating pressure rods causes the lifting linkage frame to drive the drilling motor to move down. The downward movement of the drilling motor drives the drill rod to move down, causing the drilling motor to drive the drill rod to rotate and drill into the ground, further pulling the crane back and ensuring the safe lifting of the crane. In addition, during the actual construction process, wooden boards or steel plates can be added to the ground where the crane is located to further increase the pulling force.

[0032] Furthermore, in this invention, by setting up an auxiliary balancing device, during hoisting, counterweight blocks of different masses can be inserted into the unfolded counterweight frame as needed; as the counterweight blocks continue to move, they push the arc-shaped push block downwards, causing the arc-shaped push block to drive the driving pressure plate downwards, thereby causing the driving pressure plate to squeeze any one or two lower pressure frames to move. The movement of the lower pressure frames pushes the squeezing wedge plate to move through the squeezing rod, causing the squeezing wedge plate to drive the unfolding rack to move. The movement of the unfolding rack drives the unfolding gear to rotate, causing the unfolding gear to drive the unfolded counterweight frame to rotate and unfold through the connecting shaft, further transferring the center of gravity of the hoisting vehicle, and then pulling the hoisting vehicle back. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of a steel cage hoisting device for test piles of cast-in-place piles provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the connection between the hoisting vehicle and the counterweight moving device of a steel cage hoisting device for test piles in an embodiment of the present invention;

[0035] Figure 3This is a schematic diagram of the connection between the moving plate of a steel cage hoisting device for test piles and the drilling motor and other structures provided in an embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the connection between the follow-up rotating frame and the positioning frame of a steel cage hoisting device for test piles provided in an embodiment of the present invention;

[0037] Figure 5 This is a partial cross-sectional view of the connection between the moving plate and sliding bar of a steel cage hoisting device for test piles in an embodiment of the present invention.

[0038] Figure 6 This is a partial structural diagram illustrating the connection between the lifting linkage frame and the rotating pressure rod of a steel cage hoisting device for test piles in an embodiment of the present invention.

[0039] Figure 7 This is a partial cross-sectional view of the connection between the rotating pressure rod and the downward pressure sliding shaft of a steel cage hoisting device for test piles provided in an embodiment of the present invention.

[0040] Figure 8 A schematic diagram of the fracture structure of the connection between the unfolding counterweight frame and unfolding gear of a steel cage hoisting device for test pile of cast-in-place pile provided in an embodiment of the present invention;

[0041] Figure 9 This is a partial structural diagram showing the connection between the unfolded rack and the extrusion wedge plate of a steel cage hoisting device for test piles in an embodiment of the present invention.

[0042] Figure 10 This is a partial cross-sectional structural diagram showing the connection between the driving pressure plate and the arc-shaped push block of a steel cage hoisting device for test piles in an embodiment of the present invention.

[0043] Figure 11 This is a partial cross-sectional structural diagram showing the connection between the lower pressure frame and the limiting rod of a steel cage hoisting device for test piles in an embodiment of the present invention.

[0044] Figure 12 This is a partial cross-sectional view of the connection between the hoisting vehicle and the unfolding rack and other structures of a steel cage hoisting device for test piles provided in an embodiment of the present invention.

[0045] In the diagram: 1-Lifting vehicle; 2-Movable lifting frame; 3-Counterweight block; 4-Counterweight moving device; 401-Moving plate; 402-Sliding bar; 403-Following rotating frame; 404-Positioning frame; 405-Positioning slot; 406-Positioning shaft; 407-Moving spring; 408-Vertical slide; 409-Unlocking spring; 410-Top pressure frame; 411-Retraction spring; 412-Top pressure wheel; 5-Active pull-back device; 501-Drilling motor; 502-Drill rod; 503-Lifting linkage frame; 504-Guide rod; 505-Guide hole; 506-Connecting hole; 507 - Rotating pressure rod; 508 - Lower pressure slide groove; 509 - Lower pressure slide shaft; 510 - Horizontal push cylinder; 511 - Rotary mounting groove; 512 - Rotary torsion spring; 6 - Auxiliary balancing device; 601 - Unfolding counterweight frame; 602 - Unfolding gear; 603 - Connecting shaft; 604 - Unfolding rack; 605 - Extrusion wedge plate; 606 - Extrusion rod; 607 - Horizontal slide groove; 608 - Return spring; 609 - Lower pressure frame; 610 - Limiting rod; 611 - Limiting slide groove; 612 - Rebound spring; 613 - Drive pressure plate; 614 - Arc-shaped push block; 615 - Connecting spring. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] Please refer to the attached instruction manual. Figures 1-12 The present invention provides a steel cage hoisting device for test piles of cast-in-place piles, which includes a hoisting vehicle 1, a movable frame 2 installed on the hoisting vehicle 1, and a counterweight 3 movably installed on the movable frame 2; and also includes a counterweight moving device 4, which is installed on the hoisting vehicle 1, and both the movable frame 2 and the counterweight 3 are installed on the counterweight moving device 4, which is used to move the counterweight 3.

[0053] Specifically, the counterweight moving device 4 includes a moving plate 401, which is sleeved on the movable hanger 2. The counterweight block 3 is slidably mounted on the moving plate 401 and moves on the moving plate 401 to balance the crane 1. It should be noted that, in this embodiment of the invention, during the process of the crane 1 lifting the steel cage through the movable hanger 2, if the movable hanger 2 is pulled, the crane 1 will be pulled up accordingly, which will cause the sliding bar 402 to drive the counterweight block 3 to move, thereby shifting the center of gravity of the crane 1, balancing the crane 1, and achieving the purpose of pulling the crane 1 back.

[0054] More specifically, in this embodiment of the invention, an active pull-back device 5 is also included. The active pull-back device 5 is installed on the counterweight moving device 4 and is used to pull down the hoisting vehicle 1. The active pull-back device 5 includes a drilling motor 501, which is installed on a moving plate 401. A drill rod 502 is installed on the output shaft of the drilling motor 501. A connecting hole 506 is provided on the moving plate 401. The drilling motor 501 drives the drill rod 502 to move down and rotates it, thereby pulling down the hoisting vehicle 1. It should be noted that in this embodiment of the invention, when the hoisting vehicle 1 is pulled up and the counterweight 3 continues to move, the drilling motor 501 drives the drill rod 502 to move down, and at the same time, the drilling motor 501 drives the drill rod 502 to rotate and drill into the ground, pulling the hoisting vehicle 1 back, ensuring the safe hoisting of the hoisting vehicle 1, and further increasing the pulling force.

[0055] More specifically, in this embodiment of the invention, an auxiliary balancing device 6 is also included. The auxiliary balancing device 6 is installed on the crane vehicle 1 and is used to balance and support the crane vehicle 1. The auxiliary balancing device 6 includes two unfoldable counterweight frames 601, both of which are rotatably mounted on the bottom side of the crane vehicle 1. The unfoldable counterweight frames 601 are unfolded to balance and support the crane vehicle 1, and the front end of the unfoldable counterweight frames 601 is open. It should be noted that, in this embodiment of the invention, during hoisting, counterweight blocks 3 of different masses can be inserted into the unfoldable counterweight frames 601 as needed to ensure the counterweight effect. When the crane vehicle 1 is pulled up and the counterweight blocks 3 continue to move, the unfoldable counterweight frames 601 rotate and unfold, transferring the center of gravity of the crane vehicle 1, thereby achieving the purpose of pulling the crane vehicle 1 back and ensuring the safety of the crane vehicle 1.

[0056] Please refer to the instruction manual attached. Figures 2-5 Furthermore, the steel cage hoisting device for test piles of the present invention provides a counterweight moving device 4 that further includes two sliding bars 402, both of which are slidably mounted on a moving plate 401; a moving spring 407 is installed on the sliding bar 402 and is mounted on the inner wall of the moving plate 401. It should be noted that, in this embodiment of the invention, when the two sliding bars 402 are no longer locked, the contraction force of the two moving springs 407 causes the sliding bars 402 to drive the counterweight block 3 to move, thereby shifting the center of gravity of the hoisting vehicle 1 and achieving the purpose of balancing the hoisting vehicle 1.

[0057] More specifically, in this embodiment of the invention, a follower rotating frame 403 is movably sleeved on the movable hanger 2, and two positioning frames 404 are installed on the follower rotating frame 403. Each of the two positioning frames 404 is equipped with a positioning shaft 406, and positioning slots 405 are opened on the bottom side of the two sliding bars 402. The two positioning shafts 406 are respectively inserted into the two positioning slots 405.

[0058] Furthermore, the movable hanger 2 has two vertical slide grooves 408, and the follower rotating frame 403 is slidably installed in the two vertical slide grooves 408. Unlocking springs 409 are installed on the inner walls of the vertical slide grooves 408 and are mounted on the follower rotating frame 403. It should be noted that in this embodiment of the invention, when the hoisting vehicle 1 is lifted, the follower rotating frame 403 is no longer compressed. At this time, under the contraction force of the two unlocking springs 409, the follower rotating frame 403 moves vertically downward within the two vertical slide grooves 408. The movement of the follower rotating frame 403 drives the two positioning frames 404 to move, causing the two positioning frames 404 to disengage the two positioning shafts 406 from the two positioning slots 405, thereby unlocking the two sliding bars 402.

[0059] Please continue to refer to the instruction manual appendix. Figures 2-5 More specifically, in this embodiment of the invention, a top pressure frame 410 is movably mounted on the hoisting vehicle 1, and a follower rotating frame 403 moves downward to press against the top pressure frame 410. A top pressure wheel 412 is rotatably mounted on the bottom side of the top pressure frame 410. Furthermore, a contraction spring 411 is mounted on the top pressure frame 410, and the contraction spring 411 is installed on the top side of the hoisting vehicle 1. It should be noted that in this embodiment of the invention, when the hoisting vehicle 1 is accidentally lifted, the top pressure wheel 412 loses its compressive force. Consequently, under the contraction force of the contraction spring 411, the top pressure frame 410 contracts and moves downward, disengaging from the follower rotating frame 403, thus removing the compressive force on the follower rotating frame 403.

[0060] Please refer to the instruction manual attached. Figures 2-3 and Figures 6-7 Furthermore, the active pull-back device 5 of the reinforcing cage hoisting device for test piles provided in this embodiment of the invention further includes two lifting linkage frames 503, which are respectively installed on both sides of the drilling motor 501. In addition, each of the two lifting linkage frames 503 is equipped with a guide rod 504, and two guide holes 505 are opened on the moving plate 401, with the two guide rods 504 movably installed in the two guide holes 505 respectively. It should be noted that, in this embodiment of the invention, when the lifting linkage frame 503 drives the drilling motor 501 to move downwards, the drilling motor 501 moves vertically within the two guide holes 505 via the two guide rods 504, achieving the purpose of vertical downward movement of the drilling motor 501.

[0061] Please continue to refer to the instruction manual appendix. Figures 2-3 and Figures 6-7 More specifically, in this embodiment of the invention, rotating pressure rods 507 are rotatably installed on both sides of the movable plate 401, and the two rotating pressure rods 507 are respectively movably installed on the two lifting linkage frames 503.

[0062] In addition, both sides of the counterweight 3 are equipped with horizontal pushing cylinders 510. The movement of the counterweight 3 drives the horizontal pushing cylinders 510 to push the rotating pressure rods 507 to rotate, which in turn drives the drilling motor 501 to move downward. It should be noted that, in this embodiment of the invention, when the counterweight 3 continues to move, the counterweight 3 drives the two horizontal pushing cylinders 510 to push the two rotating pressure rods 507 to rotate. The rotation of the rotating pressure rods 507 drives the lifting linkage frame 503 to move downward, which in turn causes the lifting linkage frame 503 to drive the drilling motor 501 to move downward. The downward movement of the drilling motor 501 drives the drill rod 502 to move downward, so that the drilling motor 501 drives the drill rod 502 to rotate and drill into the ground, thereby achieving the purpose of pulling the crane 1 back.

[0063] More specifically, in this embodiment of the invention, two downward sliding shafts 509 are installed on the rotating pressure rod 507, and a downward sliding groove 508 is provided on the lifting linkage frame 503. One downward sliding shaft 509 is movably installed in the downward sliding groove 508. In addition, a rotary mounting groove 511 is provided on both sides of the moving plate 401, and another downward sliding shaft 509 is rotatably installed in the rotary mounting groove 511. A rotary torsion spring 512 is installed on the inner wall of the rotary mounting groove 511, and the rotary torsion spring 512 is installed on the downward sliding shaft 509. It should be noted that, in this embodiment of the invention, when the rotating pressure rod 507 rotates, a downward sliding shaft 509 rotates within the rotary mounting groove 511, causing the rotary torsion spring 512 to be stressed. At the same time, the rotation of the rotating pressure rod 507 drives the lifting linkage frame 503 to move downward through another downward sliding shaft 509, and the downward sliding shaft 509 slides within the downward sliding groove 508, thereby achieving the purpose of the rotating pressure rod 507 driving the lifting linkage frame 503 to move vertically.

[0064] Please refer to the instruction manual attached. Figure 2 and Figures 8-12 Furthermore, the reinforcement cage hoisting device for test piles of cast-in-place piles provided in this embodiment of the invention includes an auxiliary balancing device 6 that further includes two unfolding gears 602. Two connecting shafts 603 are rotatably mounted on the hoisting vehicle 1. The two connecting shafts 603 are respectively mounted on two unfolding counterweight frames 601, and the two unfolding gears 602 are respectively mounted on the two connecting shafts 603. Expanding racks 604 are slidably mounted on both sides of the hoisting vehicle 1, and the two unfolding racks 604 mesh with the two unfolding gears 602 respectively.

[0065] Furthermore, both sides of the hoisting vehicle 1 are provided with transverse sliding grooves 607. Two unfolding racks 604 are slidably installed in the two transverse sliding grooves 607 respectively. A return spring 608 is installed on the inner wall of the transverse sliding groove 607 and is mounted on the unfolding rack 604. It should be noted that, in this embodiment of the invention, when the unfolding rack 604 moves, it slides in the transverse sliding groove 607, causing the return spring 608 to be stressed. The movement of the unfolding rack 604 drives the unfolding gear 602 to rotate, which in turn drives the unfolding counterweight frame 601 to rotate and unfold through the connecting shaft 603, thereby achieving the purpose of transferring the center of gravity of the hoisting vehicle 1.

[0066] More specifically, in this embodiment of the invention, two lower pressure frames 609 are movably installed on the crane 1. Each of the two lower pressure frames 609 is equipped with a pressing rod 606, and each of the two unfolding racks 604 is equipped with a pressing wedge plate 605. The lower pressure frame 609 moves downward and pushes the pressing wedge plate 605 to move through the pressing rod 606, which is used to drive the unfolding rack 604 to move.

[0067] Furthermore, multiple limiting grooves 611 are provided on the top side of the hoisting vehicle 1, and multiple limiting rods 610 are installed on the lower pressure frame 609. The multiple limiting rods 610 are slidably installed in the multiple limiting grooves 611 respectively. A return spring 612 is installed on the inner wall of the limiting groove 611, and the return spring 612 is installed on the limiting rod 610. It should be noted that, in this embodiment of the invention, when the counterweight block 3 moves continuously and pushes the arc-shaped push block 614 downward, the driving pressure plate 613 squeezes any one or two lower pressure frames 609 to move. The lower pressure frame 609 slides vertically in the multiple limiting grooves 611 through the multiple limiting rods 610, and causes the multiple return springs 612 to contract. The movement of the lower pressure frame 609 pushes the extrusion wedge plate 605 to move through the extrusion rod 606, so that the extrusion wedge plate 605 drives the unfolding rack 604 to move, thereby achieving the purpose of driving the unfolding rack 604 to move when the lower pressure frame 609 moves downward.

[0068] Please continue to refer to the instruction manual appendix. Figure 2 and Figures 8-12More specifically, in this embodiment of the invention, a driving pressure plate 613 is provided on the bottom side of the movable plate 401, and a plurality of connecting springs 615 are installed between the movable plate 401 and the driving pressure plate 613. The driving pressure plate 613 moves downward to compress the lower pressure frame 609 to move. In addition, an arc-shaped push block 614 is movably installed inside the movable plate 401. The arc-shaped push block 614 is installed on the driving pressure plate 613. The counterweight 3 moves to push the arc-shaped push block 614 to move, thereby driving the driving pressure plate 613 to move downward. It should be noted that in this embodiment of the invention, when the counterweight 3 moves continuously, it pushes the arc-shaped push block 614 downward, causing the arc-shaped push block 614 to drive the driving pressure plate 613 downward, and causing the plurality of connecting springs 615 to be stretched by force, thereby achieving the purpose of automatically moving the driving pressure plate 613 downward.

[0069] In summary, the working principle of the steel cage hoisting device for test piles of cast-in-place piles provided in this embodiment of the invention is as follows:

[0070] During the process of hoisting the steel cage by the movable lifting frame 2, if the movable lifting frame 2 is pulled, the hoisting vehicle 1 will be pulled up accordingly. At this time, the top pressure wheel 412 loses its compressive force, and under the contraction force of the contraction spring 411, the top pressure frame 410 contracts and moves downward and disengages from the follower rotating frame 403. At this time, under the contraction force of the two unlocking springs 409, the follower rotating frame 403 moves vertically downward in the two vertical slides 408. The movement of the follower rotating frame 403 drives the two positioning frames 404 to move. The two positioning frames 404 drive the two positioning shafts 406 to disengage from the two positioning slots 405. At this time, the two sliding bars 402 unlock, and under the contraction force of the two moving springs 407, the sliding bars 402 drive the counterweight block 3 to move, thereby shifting the center of gravity of the hoisting vehicle 1, balancing the hoisting vehicle 1, and achieving the purpose of pulling the hoisting vehicle 1 back.

[0071] Furthermore, during hoisting, counterweights 3 of varying masses can be inserted into the unfolded counterweight frame 601 as needed. As the counterweights 3 continue to move, they push the arc-shaped pusher 614 downwards, causing the arc-shaped pusher 614 to drive the drive pressure plate 613 downwards. This causes multiple connecting springs 615 to be stretched, which in turn causes the drive pressure plate 613 to press any one or two lower pressure frames 609 to move. The lower pressure frames 609 slide vertically within multiple limiting grooves 611 via multiple limiting rods 610, causing multiple return springs to... 612 retracts, the lower pressure frame 609 moves and pushes the extrusion wedge plate 605 to move through the extrusion rod 606, so that the extrusion wedge plate 605 drives the unfolding rack 604 to move. The unfolding rack 604 slides in the transverse sliding groove 607 and causes the return spring 608 to be stressed. The movement of the unfolding rack 604 drives the unfolding gear 602 to rotate, so that the unfolding gear 602 drives the unfolding counterweight frame 601 to rotate and unfold through the connecting shaft 603, further transferring the center of gravity of the crane 1, and then pulling the crane 1 back.

[0072] Furthermore, as the counterweight 3 continues to move, it drives the two horizontal pushing cylinders 510 to push the two rotating pressure rods 507 to rotate. The rotation of the rotating pressure rods 507 is transmitted through a downward sliding shaft 509 within the rotary mounting groove 511, causing the rotary torsion spring 512 to be stressed. Simultaneously, the rotation of the rotating pressure rods 507 is transmitted through another downward sliding shaft 509, causing the lifting linkage frame 503 to move downward. The downward sliding shaft 509 slides within the downward sliding groove 508, causing the lifting linkage frame 503 to move downward. The guide rod 504 slides vertically within the guide hole 505, which in turn causes the lifting linkage frame 503 to drive the drilling motor 501 to move downward. The downward movement of the drilling motor 501 drives the drill rod 502 to move downward, causing the drilling motor 501 to drive the drill rod 502 to rotate and drill into the ground, further pulling the hoisting vehicle 1 back to ensure the safe hoisting of the hoisting vehicle 1. In addition, during the actual construction process, wooden boards or steel plates can be added to the ground where the hoisting vehicle 1 is located to further increase the pulling force.

[0073] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel cage hoisting device for test piles of cast-in-place piles, characterized in that, It includes a crane vehicle, on which a movable gantry is mounted, and on which a counterweight is movably mounted; It also includes a counterweight moving device, which is installed on the crane vehicle. The movable gantry and the counterweight are both installed on the counterweight moving device. The counterweight moving device is used to move the counterweight. The counterweight moving device includes a moving plate, which is sleeved on the movable gantry. The counterweight is slidably installed on the moving plate and moves on the moving plate to balance the crane vehicle. It also includes an active pull-back device, which is installed on the counterweight moving device and is used to pull down the crane vehicle; the active pull-back device includes a drilling motor, which is installed on the moving plate, and a drill rod is installed on the output shaft of the drilling motor. The moving plate has a connecting hole. The drilling motor drives the drill rod to move down and drives the drill rod to rotate, so as to pull down the crane vehicle; It also includes an auxiliary balancing device, which is installed on the crane vehicle and is used to balance and support the crane vehicle. The auxiliary balancing device includes two deployable counterweight frames, both of which are rotatably mounted on the bottom side of the crane vehicle. The deployable counterweight frames are deployed to balance and support the crane vehicle, and the front end of the deployable counterweight frames is open. The counterweight moving device also includes two sliding bars, both of which are slidably mounted on the moving plate; A movable spring is installed on the sliding bar, and the movable spring is installed on the inner wall of the movable plate; The movable hanger is movably sleeved with a follower rotating frame, and two positioning frames are installed on the follower rotating frame. Each of the two positioning frames is equipped with a positioning shaft. The bottom side of each of the two sliding bars is provided with a positioning slot, and the two positioning shafts are respectively inserted into the two positioning slots. The movable hanger has two vertical slide grooves, and the follower rotating frame is slidably installed in the two vertical slide grooves. An unlocking spring is installed on the inner wall of the vertical slide groove and the unlocking spring is installed on the follower rotating frame. A top pressure frame is movably installed on the crane vehicle, and the follower rotating frame moves down to squeeze the top pressure frame, and a top pressure wheel is rotatably installed on the bottom side of the top pressure frame; A retraction spring is installed on the top pressure frame, and the retraction spring is installed on the top side of the hoisting vehicle.

2. The steel cage hoisting device for test piles of cast-in-place piles according to claim 1, characterized in that, The active pull-back device also includes two lifting linkage frames, which are respectively installed on both sides of the drilling motor; Both of the lifting linkage frames are equipped with guide rods, and the movable plate has two guide holes, with the two guide rods respectively movably installed in the two guide holes.

3. The steel cage hoisting device for test piles of cast-in-place piles according to claim 2, characterized in that, Rotating pressure rods are rotatably installed on both sides of the movable plate, and the two rotating pressure rods are respectively movably installed on the two lifting linkage frames; Both sides of the counterweight are equipped with horizontal pushing cylinders. The movement of the counterweight drives the horizontal pushing cylinders to push the rotating pressure rod to rotate, thereby driving the drilling motor to move downward.

4. The steel cage hoisting device for test piles of cast-in-place piles according to claim 3, characterized in that, Two downward sliding shafts are installed on the rotating pressure rod, and a downward sliding groove is opened on the lifting linkage frame. One of the downward sliding shafts is movably installed in the downward sliding groove. Both sides of the movable plate are provided with rotary mounting slots, and another downward sliding shaft is rotatably installed in the rotary mounting slot. A rotary torsion spring is installed on the inner wall of the rotary mounting slot, and the rotary torsion spring is installed on the downward sliding shaft.

5. A steel cage hoisting device for test piles of cast-in-place piles according to claim 1, characterized in that, The auxiliary balancing device also includes two deploying gears, and two connecting shafts are rotatably mounted on the crane vehicle. The two connecting shafts are respectively mounted on the two deploying counterweight frames, and the two deploying gears are respectively mounted on the two connecting shafts. Both sides of the hoisting vehicle are slidably equipped with unfolding racks, and the two unfolding racks respectively mesh with the two unfolding gears; The hoisting vehicle has transverse sliding grooves on both sides, and the two unfolding racks are slidably installed in the two transverse sliding grooves respectively. A return spring is installed on the inner wall of the transverse sliding groove, and the return spring is installed on the unfolding rack.

6. A steel cage hoisting device for test piles of cast-in-place piles according to claim 5, characterized in that, Two lower pressure frames are movably installed on the crane vehicle. Each of the two lower pressure frames is equipped with a pressing rod, and each of the two unfolding racks is equipped with a pressing wedge plate. When the lower pressure frame moves downward, it pushes the pressing wedge plate to move through the pressing rod, thereby driving the unfolding rack to move. The top side of the hoisting vehicle is provided with multiple limiting grooves, and multiple limiting rods are installed on the lower pressure frame. The multiple limiting rods are slidably installed in the multiple limiting grooves respectively. A return spring is installed on the inner wall of the limiting groove, and the return spring is installed on the limiting rod.

7. A steel cage hoisting device for test piles of cast-in-place piles according to claim 6, characterized in that, The bottom side of the movable plate is provided with a driving pressure plate, and a plurality of connecting springs are installed between the movable plate and the driving pressure plate. The driving pressure plate moves downward to squeeze the lower pressure frame to move. An arc-shaped push block is movably installed inside the movable plate. The arc-shaped push block is mounted on the driving pressure plate. The movement of the counterweight pushes the arc-shaped push block to move, thereby driving the driving pressure plate to move downward.

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