Scissor fork type pier column climbing device

Abstract

The invention discloses a shear fork type pier column climbing device, and belongs to the technical field of climbing equipment. The device comprises an upper climbing frame, a lower climbing frame, a locking oil cylinder, a jacking oil cylinder and a load bearing platform. The upper climbing frame and the lower climbing frame are both of a shear fork structure and are arranged up and down along the axis of the pier column, the clamping arms are driven by the locking oil cylinders to clamp or loosen the pier column, and the jacking oil cylinders are hinged between the climbing frames to push the device to climb in a stepping mode. The device adopts a sensor system to monitor parameters in real time to ensure safe and synchronous climbing. The shear fork structure has radial adjustability, is suitable for different pier column types, and can span a connecting beam. The device is simple in structure and wide in applicability, and the problems of high-altitude operation risk and low efficiency of a traditional construction method are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction equipment technology, and in particular to a scissor-type pier climbing device. Background Technology

[0002] In the construction of bridge cap beams, traditional methods such as the transverse steel bar method, corbel bracket method, and ground-supported scaffolding method all require high-altitude operations, gradually revealing problems such as long construction periods, poor safety, and low reliability. These methods are not only inefficient but also increase the risks for workers operating at heights. In recent years, climbing devices based on the clamping method have been introduced into cap beam construction. Through the coordinated action of the upper and lower clamps, driven by a power device, step-by-step climbing is achieved, allowing the cap beam formwork to be assembled at a low position and then lifted to a high position, thereby reducing construction risks. However, existing clamping structures are usually designed radially around the pier column, applicable only to circular piers, and unable to adapt to variations in pier diameter, exhibiting significant limitations. To address these shortcomings, this application proposes a scissor-type climbing device to solve the problems of versatility, safety, and efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a scissor-type pier climbing device, which aims to achieve reliable clamping and step-by-step climbing of piers through a scissor structure, enabling the device to adapt to piers of different types and diameters. At the same time, the sensor system improves control accuracy and safety, ultimately reducing construction risks and improving efficiency.

[0004] This invention is achieved using the following technical solution: a scissor-type pier climbing device, characterized in that it includes an upper climbing frame, a lower climbing frame, a locking cylinder, and a lifting cylinder. Both the upper and lower climbing frames are scissor structures and are arranged vertically along the pier axis. The locking cylinder is mounted on each climbing frame and is used to drive a clamping mechanism to clamp or release the pier. The lifting cylinder is hinged between the upper and lower climbing frames and is used to push the climbing frames to move relative to each other to achieve climbing or lowering. The scissor structure includes two clamping arms. The piston rod of the locking cylinder is hinged to the lug at the upper end of the clamping arm, and the cylinder body of the locking cylinder is hinged to the lug at the lower end of the clamping arm, used to drive the clamping arm to rotate around a flat-headed pin to clamp or release the pier.

[0005] Furthermore, the clamping arm is hinged with a flat-head pin to form a frame structure, which partially or fully encloses the pier column in the middle.

[0006] Furthermore, each of the clamping arms is provided with a clamping block, which is hinged to the end of the clamping arm by a pin and is used to directly contact and clamp the pier column.

[0007] Furthermore, it also includes a load-bearing platform, which is set on top of the upper climbing frame and is made of welded steel sections, used to support the cap beam formwork.

[0008] Furthermore, the locking cylinder is equipped with a pressure sensor for real-time monitoring of the clamping force; the lifting cylinder is equipped with a displacement sensor for real-time monitoring of the lifting stroke and synchronization.

[0009] Furthermore, an tilt sensor is installed on the load-bearing platform to monitor the overall attitude of the climbing device in real time.

[0010] Furthermore, the working surface of the clamping block is covered with a polyurethane plate to increase the coefficient of friction and prevent damage to the pier surface.

[0011] Furthermore, the clamping arm is a U-shaped frame structure, and the two clamping arms are hinged together by a flat-headed pin to surround the pier in the center. The two lifting cylinders enable step-by-step climbing. The radial opening of the scissor structure is adjustable, which is suitable for circular or non-circular piers of different diameters and can cross the connecting beam between piers.

[0012] Furthermore, the bottom of the lifting cylinder is hinged to the lower climbing frame, and the top of the piston rod is hinged to the upper climbing frame.

[0013] Furthermore, the clamping arm has a U-shaped frame structure, and the two clamping arms are hinged together by two flat-headed pins to form a closed loop, surrounding the pier in the center, and the step-by-step climbing is achieved by four lifting cylinders.

[0014] The scissor-type pier climbing device of the present invention has the following advantages: First, the scissor-type clamping arm has a wide adjustable range of openings along the radial direction of the pier, which can adapt to circular or non-circular piers of different diameters. Second, the frame design allows the device to not fit against the surface of the pier, avoiding the limitations of traditional clamps. The U-shaped semi-enclosed structure can span the connecting beams between piers, and a U-shaped fully enclosed structure can be used for applications without connecting beams. Third, through the optimized layout of the hinge points and hydraulic cylinders, the overall structure is simple and compact, achieving miniaturization and lightweighting. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of a semi-enclosed structure. Figure 3 This is a top view of a fully enclosed structure. In the diagram, 1-upper climbing frame, 2-lower climbing frame, 3-locking cylinder, 4-lifting cylinder, 5-load bearing platform, 6-pier, 1.1-clamping arm, 1.2-clamping block, 1.3-flat-head pin. Detailed Implementation

[0017] 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.

[0018] 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. Example

[0019] like Figure 1-3As shown, this embodiment provides a scissor-type pier climbing device, mainly composed of an upper climbing frame 1, a lower climbing frame 2, a locking cylinder 3, a lifting cylinder 4, a load-bearing platform 5, and a pier 6. Both the upper climbing frame 1 and the lower climbing frame 2 are scissor structures, arranged parallel to each other along the axis of the pier 6, with identical structural forms. Each climbing frame includes two clamping arms 1.1, which are hinged together by flat-head pins 1.3 to form a scissor structure, partially enclosing the pier 6. Hinged lugs are provided on the clamping arms 1.1 for connecting the locking cylinder 3 and the lifting cylinder 4. Each clamping arm 1.1 includes two clamping blocks 1.2, which are hinged to the ends of the clamping arms 1.1 by pins and symmetrically distributed at the quadrant points of the pier 6. A polyurethane board is attached to the working surface of the clamping blocks 1.2 to increase the friction coefficient and prevent damage to the concrete surface of the pier 6. Two locking cylinders 3 are configured for each climbing frame. The cylinder body is hinged to the lug at the lower end of the clamping arm 1.1, and the piston rod is hinged to the lug at the upper end of the clamping arm 1.1. By extending and retracting, the clamping arm 1.1 rotates around the flat-head pin 1.3, thereby clamping or releasing the pier column 6. The locking cylinder 3 is equipped with a pressure sensor for real-time monitoring of the clamping force. The bottom of the lifting cylinder 4 is hinged to the lug of the lower climbing frame 2, and the top of the piston rod is hinged to the lug of the upper climbing frame 1, for pushing the relative movement of the climbing frames. The lifting cylinder 4 is equipped with a displacement sensor to monitor the lifting stroke and synchronization in real time. The load-bearing platform 5 is located on top of the upper climbing frame 1 and is welded from structural steel, providing a support plane for the cap beam formwork. An inclination sensor is installed on the platform to monitor the overall attitude of the climbing device in real time and feed it back to the control system.

[0020] The operation of the climbing device is as follows: First, two sets of climbing devices are installed on the two piers 6 respectively, and the cap beam formwork is erected on the load-bearing platform 5. During climbing, the locking cylinder 3 and the lifting cylinder 4 are driven by a hydraulic system to work together. The upward climbing process includes: First, the locking cylinder 3 of the upper climbing frame 1 extends, pushing the clamping block 1.2 to grip the pier 6, while the locking cylinder 3 of the lower climbing frame 2 retracts, causing the clamping block 1.2 to release the pier 6; Second, the lifting cylinder 4 retracts, driving the lower climbing frame 2 upward to the set stroke position; Third, the locking cylinder 3 of the lower climbing frame 2 extends to lock the pier 6, while the locking cylinder 3 of the upper climbing frame 1 retracts to release; Fourth, the lifting cylinder 4 extends, pushing the upper climbing frame 1 upward to the next designated position; Fifth, the upper climbing frame 1 relocks, completing one climbing cycle. The above steps are repeated to gradually climb the device to the designated position for cap beam pouring. The descent process follows the same principle as the ascent, but in reverse order: First, the lower climbing frame 2 locks, and the upper climbing frame 1 releases; second, the lifting cylinder 4 retracts, causing the upper climbing frame 1 to move downwards; third, the upper climbing frame 1 locks, and the lower climbing frame 2 releases; fourth, the lifting cylinder 4 extends, pushing the lower climbing frame 2 downwards; fifth, the lower climbing frame 2 locks again, completing one descent cycle. Throughout the process, pressure sensors, displacement sensors, and tilt sensors monitor data in real time, and precise control is achieved through the control system.

[0021] The structural features of this climbing device include: First, the adjustable range of the opening of the scissor-type clamping arm 1.1 along the radial direction of the pier 6 is large, adaptable to circular or non-circular piers of different diameters; Second, the frame design prevents the device from fitting directly onto the pier surface, avoiding the limitations of traditional clamps. The clamping arm 1.1, a U-shaped frame structure, partially encloses the pier in the center and can span the connecting beam between piers; Third, through the optimized layout of the hinge points and hydraulic cylinders, the overall structure is simple and compact, achieving miniaturization and lightweighting. Furthermore, for piers without connecting beams, the climbing frame can be expanded into a U-shaped frame structure: the two clamping arms 1.1, using a U-shaped frame structure, are hinged together by two flat-headed pins 1.3 to form a closed loop, completely encircling the pier 6 in the center, and four lifting hydraulic cylinders 4 achieve step-by-step climbing, further enhancing stability and load-bearing capacity.

[0022] Through the above design, this device significantly improves the safety and efficiency of cap beam construction. The sensor system ensures the reliability and synchronization of the climbing process, the polyurethane clamping block 1.2 protects the pier surface, and the combination of hydraulic drive and scissor structure enables smooth and controllable vertical movement. Furthermore, this device eliminates the need for high-altitude formwork assembly, greatly reducing construction risks and shortening the construction period.

[0023] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Modifications and variations made by those skilled in the art without departing from the spirit and scope of the invention should be within the protection scope of the appended claims.

Claims

1. A scissor-type pier climbing device, characterized in that, The system includes an upper climbing frame (1), a lower climbing frame (2), a locking cylinder (3), and a lifting cylinder (4). Both the upper climbing frame (1) and the lower climbing frame (2) are scissor structures, arranged vertically along the axis of the pier (6). The locking cylinder (3) is mounted on each climbing frame and is used to drive the clamping mechanism to clamp or release the pier (6). The lifting cylinder (4) is hinged to the upper climbing frame (1) and the lower climbing frame (2). 2) Between, used to push the relative movement of the climbing frame to achieve climbing or descending, the scissor structure includes two clamping arms (1.1), the piston rod of the locking cylinder (3) is hinged to the ear seat at the upper end of the clamping arm (1.1), and the cylinder body of the locking cylinder (3) is hinged to the ear seat at the lower end of the clamping arm (1.1) to drive the clamping arm (1.1) to rotate around the flat-head pin (1.3) to achieve clamping or releasing of the pier (6).

2. The scissor-type pier climbing device according to claim 1, characterized in that, The clamping arm (1.1) is hinged to form a frame structure by a flat-head pin (1.3), which partially or fully encloses the pier (6) in the middle.

3. The scissor-type pier climbing device according to claim 2, characterized in that, Each of the clamping arms (1.1) is provided with a clamping block (1.2), which is hinged to the end of the clamping arm (1.1) by a pin and is used to directly contact and clamp the pier column (6).

4. The scissor-type pier climbing device according to claim 1, characterized in that, It also includes a load-bearing platform (5), which is located on top of the upper climbing frame (1) and is made of welded steel sections, used to support the cap beam template.

5. A scissor-type pier climbing device according to claim 1, characterized in that, The locking cylinder (3) is equipped with a pressure sensor for real-time monitoring of clamping force; the lifting cylinder (4) is equipped with a displacement sensor for real-time monitoring of lifting stroke and synchronization.

6. A scissor-type pier climbing device according to claim 4, characterized in that, The load-bearing platform (5) is equipped with an tilt sensor to monitor the overall attitude of the climbing device in real time.

7. A scissor-type pier climbing device according to claim 1, characterized in that, The working surface of the clamping block (1.2) is covered with a polyurethane board to increase the friction coefficient and prevent damage to the surface of the pier (6).

8. A scissor-type pier climbing device according to claim 2, characterized in that, The clamping arm (1.1) is a U-shaped frame structure. The two clamping arms (1.1) are hinged together by a flat-headed pin (1.3) to surround the pier (6) in the center. The two lifting cylinders (4) achieve step-by-step climbing. The radial opening of the scissor structure is adjustable, which is suitable for circular or non-circular piers (6) of different diameters, and can cross the connecting beam between piers.

9. A scissor-type pier climbing device according to claim 3, characterized in that, The bottom of the lifting cylinder (4) is hinged to the lower climbing frame (2), and the top of the piston rod is hinged to the upper climbing frame (1).

10. A scissor-type pier climbing device according to claim 2, characterized in that, The clamping arm (1.1) is a U-shaped frame structure. The two clamping arms (1.1) are hinged together by two flat-headed pins (1.3) to form a closed loop, which surrounds the pier (6) in the center and is lifted step by step by four lifting cylinders (4).

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