A steel reinforcement cage docking operation platform for bored cast-in-place pile construction
By designing the docking operation platform for drilling and filling pile construction, and using technical means such as main support frames and linkage gear drive motors, the problems of low accuracy and low efficiency of traditional docking operations are solved, and high-precision and high-efficiency steel cage docking are achieved.
Patent Information
- Application Number
- CN202510198970.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2045-02-24
AI Technical Summary
Traditional steel cage docking operations have problems such as low docking accuracy, low efficiency, and great safety hazards, which are difficult to meet the needs of high-precision and high-efficiency docking.
A steel cage docking operation platform for drilling and cast-injected pile construction is designed, and technical means such as a solid main support frame, linkage gear drive motor, inner rotating ring, hydraulic cylinder and hydraulic rod are used to achieve precise control and docking of the steel cage.
It improves the accuracy and efficiency of steel cage docking, reduces the risk of shaking and tilting during docking, and improves the cleanliness and safety of the construction site.
Smart Images

Figure CN119686334B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of the butt joint of steel reinforcement cages, and more specifically, to a butt joint operation platform for steel reinforcement cages in bored cast-in-place pile construction. Background Art
[0002] The bored cast-in-place pile is a common construction method for foundation engineering and is widely used in fields such as bridges and buildings. Its construction process includes steps such as drilling, hole cleaning, lowering of the steel reinforcement cage, and concrete pouring. The steel reinforcement cage, as the pile body skeleton, plays a crucial role in the bearing capacity and stability of the pile.
[0003] During the construction process of bored cast-in-place piles, the butt joint operation of the steel reinforcement cage is a key link. Since the steel reinforcement cage is relatively long, it usually needs to be fabricated in sections and butt-jointed on site. During the butt joint process, it is necessary to ensure the butt joint accuracy and stability of the steel reinforcement cage to guarantee the overall quality of the pile body. Traditional butt joint operations of steel reinforcement cages are mostly carried out manually, with problems such as low butt joint accuracy, low efficiency, and large potential safety hazards. At the same time, due to the complex and changeable construction site environment, traditional methods are difficult to meet the butt joint requirements of high precision and high efficiency.
[0004] To solve the above problems, this application provides a butt joint operation platform for steel reinforcement cages in bored cast-in-place pile construction. Summary of the Invention
[0005] The butt joint operation platform for steel reinforcement cages in bored cast-in-place pile construction provided by this application adopts the following technical solutions:
[0006] A steel cage docking operation platform for bored cast-in-place pile construction comprises a main body support frame, an operation platform is arranged on the top of the main body support frame, and evenly distributed bottom operation bins are penetrated on the outer wall of the main body support frame located below the operation platform, and extended support feet are arranged at the bottom of the outer wall of the main body support frame, and are staggered with the bottom operation bins; an evenly distributed transverse rotation mechanism is arranged on the outer wall of the main body support frame between the operation platform and the bottom operation bin, and the transverse rotation mechanism penetrates the main body support frame and extends into the main body support frame; a symmetrical reinforcement rib winding mechanism is arranged on the outer wall of the operation platform; a symmetrical ladder is arranged on the outer wall of the operation platform, and the ladder and the reinforcement rib winding mechanism are symmetrically distributed with each other; an outer peripheral protection fence mechanism is arranged on the periphery of the top of the operation platform, an inner fence is arranged on the inner periphery of the top of the operation platform, and a docking clearance opening is penetrated on the operation platform between the inner fences. The top surface of the operating platform is provided with a grid-shaped anti-skid pattern, and the inner wall of the transverse rotating mechanism located in the main support frame is provided with a longitudinal descending mechanism that is evenly distributed and symmetrical with each other up and down, and the peripheral protection fence mechanism includes a support rod, and the top of the support rod is provided with a mutually symmetrical semi-annular bottom operating bin, and the top of the semi-ring protection rod on one side is provided with a rotating shaft seat, and the top of the semi-ring protection rod on the other side is provided with an abutment groove block, and the side of the rotating shaft seat close to the semi-ring protection rod on the other side is provided with a rotatably connected closed bent rod, and the support rod is evenly distributed on the top periphery of the operating platform, and one end of the closed bent rod is rotatably connected to the rotating shaft seat, and the end of the closed bent rod away from the rotating shaft seat abuts against the abutment groove block, and the reinforcing rib winding mechanism includes a first extension arm, and the end of the first extension arm away from the operating platform is provided with a second linkage arm, and the top of the second linkage arm is provided with a third rotating arm, and the middle section of the third rotating arm is penetrated by a yielding rotation groove, The top of the third rotating arm is provided with multiple rotating arm lead-in openings, the end of the abutment wheel close to the first extension arm is provided with a fourth extension arm, the top of the fourth extension arm is provided with symmetrical extension arm lead-in openings, the end of the fourth extension arm close to the third rotating arm is provided with a rotatably connected abutment wheel, the top of the second linkage arm is located in the yielding rotation groove, and the third rotating arm is rotationally connected to the second linkage arm through a rotating pin in the yielding rotation groove.
[0007] Furthermore, the lateral rotation mechanism includes a linkage gear drive motor arranged in a protective shell, a linkage gear is arranged on the top output end of the linkage gear drive motor, a gear groove is arranged on the side of the outer wall of the main support frame close to the lateral rotation mechanism, an inner rotating ring is arranged on the inner wall of the main support frame, and evenly distributed inner teeth are arranged in the middle section of the outer wall of the inner rotating ring.
[0008] Further, the linkage tooth passes through the gear slot and meshes with the internal teeth. The linkage gear drive motor, the linkage tooth, and the gear slot are all located inside the protective housing.
[0009] Further, the longitudinal descending mechanism includes a hydraulic cylinder. One end of the hydraulic cylinder away from the inner rotating ring is provided with a hydraulic rod, and a controllable gear is arranged between the opposite ends of the hydraulic rod away from the hydraulic cylinder.
[0010] In summary, the present application includes the following beneficial technical effects:
[0011] The platform adopts a strong main support frame to ensure the stability and load-bearing capacity of the overall structure. This design enables the platform to remain stable when carrying heavy objects such as steel reinforcement cages, reducing the risk of shaking and tilting. A spacious operating platform is provided at the top of the main support frame, facilitating the construction workers to carry out the welding operation of the steel bars of the steel reinforcement cage. Through the cooperation of the linkage gear drive motor and the inner rotating ring, precise control of the steel reinforcement cage is achieved. This design enables the platform to flexibly adjust the angle and direction during the docking process of the steel reinforcement cage, improving the construction efficiency. When combined with the controllable gear, the platform can easily achieve the lifting control of the load. By adjusting the rotation speed of the controllable gear, the lifting height and speed of the steel reinforcement cage can be precisely controlled, achieving the accuracy of the docking of the steel reinforcement cages. In cooperation with the hydraulic cylinder and the hydraulic rod, it is possible to process steel reinforcement cages of different specifications and diameters. The steel bar winding mechanism makes the cable management more orderly and efficient, reducing the situation of cables being in a mess, and improving the cleanliness and safety of the construction site. Description of the Drawings
[0012] Figure 1 is a schematic diagram of the overall structure of the present application;
[0013] Figure 2 is a schematic diagram of the structure of the operating platform of the present application;
[0014] Figure 3 is of the present application Figure 2 enlarged schematic diagram of the structure at A;
[0015] Figure 4 is a schematic diagram of the structure of the steel bar winding mechanism of the present application;
[0016] Figure 5 is a schematic diagram of the structure of the longitudinal descending mechanism of the present application;
[0017] Figure 6 is a schematic diagram of the structure of the transverse rotation mechanism of the present application;
[0018] Figure 7 is a schematic diagram of the structure of the inner rotating ring of the present application.
[0019] Explanation of the reference numerals in the figures:
[0020] 1. Main support frame; 2. Bottom operation bin; 3. Extension support feet; 4. Ladder; 5. Operation platform; 6. Reinforcing rib winding mechanism; 601. First extension arm; 602. Second linkage arm; 603. Third rotating arm; 604. Yielding rotating groove; 605. Rotating arm lead port; 606. Fourth extension arm; 607. Contact wheel; 608. Extension arm lead port; 7. Peripheral protection fence mechanism; 701. Support rod; 702. Semi-circular protection rod; 703. Rotating shaft seat; 704. Closing bent rod; 705. Contact groove block; 8. Transverse rotation mechanism;
[0021] 801. Protection shell; 802. Linkage tooth drive motor; 803. Linkage tooth; 804. Gear groove; 805. Inner rotating ring; 806. Inner tooth; 9. Longitudinal descent mechanism; 901. Hydraulic cylinder; 902. Hydraulic rod; 903. Adjustable gear; 10. Anti-slip pattern; 11. Docking yielding port; 12. Inner guardrail. Detailed implementation manners
[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0023] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0025] Embodiment:
[0026] An embodiment of the present application discloses a reinforcement cage docking operation platform for bored cast-in-place pile construction. Please refer to FIG. 1- Figure 7, comprising a main body support frame 1, an operating platform 5 is provided on the top of the main body support frame 1, and evenly distributed bottom operating compartments 2 are penetrated on the outer wall of the main body support frame 1 located below the operating platform 5, and an extended support leg 3 staggered with the bottom operating compartment 2 is provided at the bottom of the outer wall of the main body support frame 1, and an evenly distributed transverse rotation mechanism 8 is provided on the outer wall of the main body support frame 1 between the operating platform 5 and the bottom operating compartment 2, and the transverse rotation mechanism 8 penetrates the main body support frame 1 and extends into the main body support frame 1, and a symmetrical reinforcing rib winding mechanism 6 is provided on the outer wall of the operating platform 5, and a symmetrical ladder 4 is provided on the outer wall of the operating platform 5, and the ladder 4 and the reinforcing rib winding mechanism 6 are symmetrically distributed with each other, and an outer protective fence mechanism 7 is provided on the outer periphery of the top of the operating platform 5, and an inner fence 12 is provided on the inner periphery of the top of the operating platform 5, and a docking and yielding opening 11 is penetrated between the inner fence 12 on the operating platform 5, and the operating platform 5 The top surface is provided with a grid-shaped anti-skid pattern 10. The inner wall of the transverse rotation mechanism 8 located in the main support frame 1 is provided with a longitudinal descending mechanism 9 that is evenly distributed and symmetrical to each other. The platform body is composed of a stable main support frame 1, and a spacious operating platform 5 is provided on the top, which is convenient for construction personnel to carry out the reinforcing rib winding welding operation of the steel cage. Below the operating platform 5, the outer wall of the main support frame 1 is provided with evenly distributed bottom operating chambers 2, which provide convenient space for the butt welding of the steel cage after the winding is completed. In order to enhance the overall stability, the bottom of the main support frame 1 is equipped with extended legs 3 that are staggered with the bottom operating chamber 2, which effectively disperses the load and improves the platform's anti-overturning ability. The outer wall of the main support frame 1 is also equipped with a transverse rotation mechanism 8 between the operating platform 5 and the bottom operating chamber 2, which provides convenience for the rotation of the steel cage to weld the reinforcing ribs. The symmetrical ladder 4 is set to ensure that construction personnel can safely and conveniently get on and off the platform. The symmetrical layout of the ladder 4 and the reinforcement winding mechanism 6 not only optimizes the space utilization, but also improves the overall aesthetics. The top of the platform is provided with an outer protection fence mechanism 7 and an inner enclosure fence 12. The double protection design effectively ensures the safety of the construction workers. In particular, the docking opening 11 opened between the inner enclosure fences 12 is specially reserved for the docking operation of the steel cage to ensure the smooth progress of the construction process. The top surface of the platform is also covered with a grid-like anti-skid pattern 10, which effectively prevents the construction workers from accidentally slipping in a slippery environment. The inside of the transverse rotation mechanism 8 located in the main support frame 1 also integrates a longitudinal descending mechanism 9 that is evenly distributed and symmetrical to each other, which provides convenience for the docking welding of the steel bars with welded reinforcements and the steel cage buried in the pile foundation.
[0027] The peripheral protection fence mechanism 7 includes support rods 701. At the top of the support rods 701, there are symmetric semi-circular bottom operation bins 2. At the top of one end of the semi-circular guard rod 702 on one side close to the semi-circular guard rod 702 on the other side, there is a rotating shaft seat 703. At the top of one end of the semi-circular guard rod 702 on the other side close to the semi-circular guard rod 702 on one side, there is an abutting groove block 705. Inside the rotating shaft seat 703 on the side close to the semi-circular guard rod 702 on the other side, there is a closing bent rod 704 rotatably connected. The support rods 701 are evenly distributed around the top periphery of the operation platform 5. One end of the closing bent rod 704 is rotatably connected to the rotating shaft seat 703, and the end of the closing bent rod 704 far from the rotating shaft seat 703 abuts against the abutting groove block 705. At the top of each support rod 701, there are symmetric semi-circular guard rods 702. These two semi-circular guard rods are connected and separated through a delicate mechanical structure. At the top of the semi-circular guard rod 702 on one side, there is a rotating shaft seat 703, serving as the fulcrum for the opening and closing action. And on the semi-circular guard rod 702 on the other side, there is correspondingly an abutting groove block 705 for cooperating with the closing bent rod 704 to achieve locking. One end of the closing bent rod 704 is rotatably connected to the rotating shaft seat 703, and the other end is designed with a structure matching the abutting groove block 705 to ensure that they can firmly abut together in the closed state, forming a complete circular protection fence, improving the stability and safety of the protection fence.
[0028] The reinforcing rib winding mechanism 6 comprises a first extension arm 601, wherein a second linkage arm 602 is arranged in the end of the first extension arm 601 away from the operating platform 5, a third rotating arm 603 is arranged on the top of the second linkage arm 602, a yielding rotating groove 604 is penetrated through the middle section of the third rotating arm 603, a plurality of rotating arm lead-in openings 605 are arranged on the top of the third rotating arm 603, a fourth extension arm 606 is arranged in the end of the abutment wheel 607 close to the first extension arm 601, a relatively symmetrical extension arm lead-in openings 608 are arranged on the top of the fourth extension arm 606, a rotatably connected abutment wheel 607 is arranged in the end of the fourth extension arm 606 close to the third rotating arm 603, the top of the second linkage arm 602 is located in the yielding rotating groove 604, and the third rotating arm 603 is rotatably connected to the second linkage arm 602 through a rotating pin in the yielding rotating groove 604, and the first extension arm 601 serves as the supporting basis of the entire winding mechanism and is firmly connected to the operating platform 5 The second linkage arm 602 is provided inside the end away from the platform to ensure the coordination of the winding action. The third rotating arm 603 is installed on the top of the second linkage arm 602. The middle section is provided with a yielding rotating groove 604, so that the third rotating arm can be flexibly rotated within a certain range to meet the cable guiding requirements at different angles. The fourth extension arm 606 is set in the end of the abutment wheel 607 close to the first extension arm 601. The top of the fourth extension arm 606 is provided with symmetrical extension arm lead-in openings 608. These lead-in openings and the rotating arm lead-in opening 605 complement each other and together constitute a complete cable guiding system. The end of the fourth extension arm 606 close to the third rotating arm 603 is provided with a rotatably connected abutment wheel 607. The abutment wheel can provide a certain friction and support force when the cable passes through to ensure the stable transmission of the cable.
[0029] The horizontal rotation mechanism 8 includes a linkage gear drive motor 802 disposed inside a protective housing 801. A linkage gear 803 is provided at the top output end of the linkage gear drive motor 802. Gear grooves 804 are formed on the outer wall of the main body support frame 1 on one side close to the horizontal rotation mechanism 8. An inner rotating ring 805 is provided on the inner wall of the main body support frame 1. Uniformly distributed inner teeth 806 are formed in the middle section of the outer wall of the inner rotating ring 805. The linkage gear 803 passes through the gear grooves 804 and meshes with the inner teeth 806. The linkage gear drive motor 802, the linkage gear 803, and the gear grooves 804 are all located inside the protective housing 801. The core component of this mechanism is the linkage gear drive motor 802 located inside the protective housing 801. As a power source, this motor has a linkage gear 803 installed at its top output end. The linkage gear is a key component for power transmission. Gear grooves 804 are formed on the outer wall of the main body support frame 1 on one side close to the horizontal rotation mechanism 8. These gear grooves provide precise guidance and positioning for the linkage gear 803, ensuring the stability and reliability of power transmission. An inner rotating ring 805 is provided on the inner wall of the main body support frame 1. This inner rotating ring is a direct load-bearing component for rotational movement. Uniformly distributed inner teeth 806 are formed in the middle section of the outer wall of the inner rotating ring 805. These inner teeth mesh with the linkage gear 803, realizing the effective transmission of motor power to the inner rotating ring. When the linkage gear drive motor 802 is started, the linkage gear 803 at its output end drives the inner rotating ring 805 to perform a rotational movement along a predetermined trajectory.
[0030] The longitudinal descent mechanism 9 includes a hydraulic cylinder 901. A hydraulic rod 902 is provided at one end of the hydraulic cylinder 901 away from the inner rotating ring 805. A controllable gear 903 is provided between the opposite ends of the hydraulic rod 902 away from the hydraulic cylinder 901. With its high-efficiency, precision, and reliable lifting and lowering performance, the longitudinal descent mechanism 9 provides important technical support for the steel cage docking operation in the construction of bored cast-in-place piles. Through reasonable structural design and advanced hydraulic transmission technology, this mechanism realizes precise lifting and lowering control of the load.
[0031] The implementation principle of this embodiment is as follows: first, the prefabricated steel bars are passed through the rotating arm lead-in port on the third rotating arm and the extension arm lead-in port on the fourth extension arm in turn, and the winding of reinforcing bars with different specifications and spacings is achieved by adjusting the rotating angles among the second linkage arm, the third rotating arm and the fourth extension arm. The construction personnel climb up to the operating platform through the ladder and push the closed bent rod into the inner platform to enter the operating platform. Then, the pile foundation steel bars are hoisted by the crane to be located at the docking clearance port for welding the reinforcing bars. Subsequently, the steel cage with a preliminary welding is slowly lowered by the crane, and the hydraulic rod in the longitudinal descending mechanism is pushed to the opposite side, so that the tooth grooves on the adjustable gear are clamped with the reinforcing bars of the preliminarily welded steel cage, and the clamping of reinforcing bars with different spacings can be achieved through the adjustable gears that are symmetrical to each other up and down. Subsequently, the linkage gear drives the motor to drive the linkage teeth to drive the inner rotating ring between the linkage teeth to rotate, and cooperates with the descent of the longitudinal descending mechanism to realize the linkage winding of the reinforcement bar. After the winding is completed, the horizontal rotating mechanism can be rotated to achieve preliminary positioning with the steel cage in the pile foundation pit, and then it is lowered and docked through the longitudinal descending mechanism, and then the bottom construction workers perform docking welding in the bottom operating cabin.
[0032] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A steel cage docking operation platform for bored pile construction, comprising a main support frame (1), characterized in that: An operating platform (5) is provided on the top of the main body support frame (1), and evenly distributed bottom operating compartments (2) are provided through the outer wall of the main body support frame (1) below the operating platform (5). The bottom of the outer wall of the main body support frame (1) is provided with an extended support foot (3) which is staggered with the bottom operating compartment (2); the outer wall of the main body support frame (1) is provided with a uniformly distributed transverse rotation mechanism (8) at a position between the operating platform (5) and the bottom operating compartment (2); and the transverse rotation mechanism (8) passes through the main body support frame (1) and extends into the main body support frame (1); a symmetrical reinforcing rib winding mechanism (6) is provided on the outer wall of the operating platform (5); a symmetrical ladder (4) is provided on the outer wall of the operating platform (5); and the ladder (4) and the reinforcing rib winding mechanism (6) are symmetrically distributed with each other; an outer protective fence mechanism (7) is provided on the outer periphery of the top of the operating platform (5); an inner fence (12) is provided on the inner periphery of the top of the operating platform (5); a docking and giving way opening (11) is provided on the operating platform (5) between the inner fences (12); and a grid-shaped anti-slip pattern (10) is provided on the top surface of the operating platform (5). The inner wall of the transverse rotation mechanism (8) located in the main support frame (1) is provided with longitudinal descending mechanisms (9) that are evenly distributed and symmetrical with each other up and down. The peripheral protection fence mechanism (7) comprises a support rod (701). The top of the support rod (701) is provided with a semi-circular bottom operating compartment (2) that is symmetrical with each other. A rotating shaft seat (703) is provided at the top of one end of the semi-circular protection rod (702) on one side close to the semi-circular protection rod (702) on the other side. A contact groove block (705) is provided at the top of one end of the semi-circular protection rod (702) on the other side close to the semi-circular protection rod (702) on one side. A rotatably connected closed curved rod (704) is provided in the side of the rotating shaft seat (703) close to the semi-circular protection rod (702) on the other side. The support rods (701) are evenly distributed on the top periphery of the operating platform (5). One end of the closed curved rod (704) is rotatably connected to the rotating shaft seat (703). The end of the closed curved rod (704) away from the rotating shaft seat (703) abuts against the abutment groove block (705).The reinforcing rib winding mechanism (6) comprises a first extension arm (601), a second linkage arm (602) is provided in the end of the first extension arm (601) away from the operating platform (5), a third rotating arm (603) is provided on the top of the second linkage arm (602), a middle section of the third rotating arm (603) is provided with a yielding rotating groove (604), a plurality of rotating arm lead-in openings (605) are provided on the top of the third rotating arm (603), a fourth extension arm (606) is provided in the end of the abutment wheel (607) close to the first extension arm (601), a symmetrical extension arm lead-in opening (608) is provided on the top of the fourth extension arm (606), a rotatably connected abutment wheel (607) is provided in the end of the fourth extension arm (606) close to the third rotating arm (603), the top of the second linkage arm (602) is located in the yielding rotating groove (604), and the third rotating arm (603) is provided with a plurality of rotating arm lead-in openings (605). The second linkage arm (602) is rotatably connected via a rotating latch in the yielding rotation slot (604).
2. The steel cage docking operation platform for bored pile construction according to claim 1, characterized in that: The lateral rotation mechanism (8) comprises a protective shell (801) in which a linkage gear drive motor (802) is arranged, a linkage tooth (803) is arranged on the top output end of the linkage gear drive motor (802), a gear groove (804) is arranged on the outer wall of the main body support frame (1) on one side close to the lateral rotation mechanism (8), an inner rotating ring (805) is arranged on the inner wall of the main body support frame (1), and evenly distributed inner teeth (806) are arranged in the middle section of the outer wall of the inner rotating ring (805).
3. A steel cage docking operation platform for bored pile construction according to claim 2, characterized in that: The linkage teeth (803) pass through the gear groove (804) and mesh with the internal teeth (806); the linkage gear drive motor (802), the linkage teeth (803) and the gear groove (804) are all located in the protective housing (801).
4. The steel cage docking operation platform for bored pile construction according to claim 3, characterized in that: The longitudinal descending mechanism (9) comprises a hydraulic cylinder (901), a hydraulic rod (902) is provided on one end of the hydraulic cylinder (901) away from the inner rotating ring (805), and an adjustable gear (903) is provided between the inner and outer ends of the hydraulic rod (902) away from the hydraulic cylinder (901).
Citation Information
Patent Citations
Cast-in-situ bored pile reinforcement cage hoisting calibration system
CN117364779A
Cast-in-place pile construction platform for roads and bridges
CN117661555A