Concrete face rockfill dam panel formwork pulling device

Abstract

The application discloses a concrete face slab rockfill dam face slab formwork traction device and relates to the technical field of slipform traction equipment. The device comprises a first winch, a first supporting frame, a second winch, and a second supporting frame. The first winch is adapted with a first cable. The first supporting frame is provided with a first supporting roller, an adjusting roller, and a second supporting roller. The first supporting roller, the adjusting roller, and the second supporting roller are used for stretching the first cable. The height of the adjusting roller can be adjusted. The first supporting roller, the adjusting roller, and the second supporting roller are sequentially and separately arranged along the length direction of the first cable. The second winch is adapted with a second cable. The second supporting frame is provided with a third supporting roller. The third supporting roller is used for stretching the second cable. A balance control assembly can control the height of the adjusting roller according to the longitudinal inclination angle of the slipform. The application can prevent the slipform from having a large longitudinal inclination.

Description

Technical Field

[0001] This invention relates to the field of slipform traction equipment technology, specifically to a traction device for concrete panel rockfill dam panel formwork. Background Technology

[0002] The core structure of a concrete-faced rockfill dam consists of a rockfill dam body and a thin concrete face. The rockfill dam body, composed of piled crushed stone, rock, gravel, and other materials, supports the dam and withstands water pressure, exhibiting good seismic resistance, adaptability, and stability. The concrete face, typically composed of thin concrete slabs poured onto the surface of the rockfill dam body, serves to prevent seepage, protect the dam, and increase its stability. It is suitable for construction in complex geological environments such as mountainous areas and canyons, and is commonly used in large and medium-sized reservoirs, water supply, irrigation, and flood control projects.

[0003] In existing water conservancy projects, trackless slipform is typically used to pour concrete panels for rockfill dams. This involves installing copper waterstops on both sides of the pouring area on the water-facing side of the dam, followed by the installation of side formwork (a steel-wood composite structure, with a spacing of more than 10 meters between the two formworks). Two winches are then installed at intervals on the top of the dam to suspend the two ends of the slipform, allowing it to move along the side formwork. However, while the two winches are directly connected to the slipform and controlled by a suitable control system to move synchronously and at the same speed, the difference in cable winding length at both ends, and the relatively long cable length (the overhanging portion can be over 100 meters), causes the slipform to tilt during its upward movement. This tilting shortens the section of the slipform that rests on one side of the formwork. In addition, during the concrete pouring process, the concrete supports the slipform. As a result, when the buoyancy force of the concrete acts on the short, suspended end of the slipform with a large inclination angle, that end is prone to "slippage". Summary of the Invention

[0004] To address the technical problem of tilting that easily occurs during the lifting process of existing concrete-faced rockfill dams, this invention provides a concrete-faced rockfill dam panel formwork traction device. This device can improve the situation where the cables at both ends of the slipform are not wound synchronously, prevent the slipform from tilting significantly in the longitudinal direction, and thus avoid the situation of "formwork running away," thereby ensuring the pouring quality of the concrete-faced rockfill dam panel.

[0005] This invention is achieved through the following technical solution:

[0006] This invention provides a concrete-faced rockfill dam panel formwork traction device, comprising: a first winch adapted to a first cable; a first support frame, the first support frame being provided with a first support roller, an adjusting roller, and a second support roller, the first support roller, the adjusting roller, and the second support roller being used for tensioning the first cable, the height of the adjusting roller being adjustable, and the first support roller, the adjusting roller, and the second support roller being arranged sequentially at intervals along the length direction of the first cable; a second winch adapted to a second cable; a second support frame, the second support frame being provided with a third support roller, the third support roller being used for tensioning the second cable; and a balance control component, the balance control component being able to control the height of the adjusting roller according to the longitudinal tilt angle of the slipform.

[0007] The present invention provides a concrete-faced rockfill dam panel formwork traction device, comprising a first winch, a first support frame, a second winch, a second support frame, and a balance control component. The first winch is equipped with a first cable, and the second winch is equipped with a second cable. The first support frame is provided with a first support roller, an adjusting roller, and a second support roller. The height of the adjusting roller can adjust the tension of the first cable on the first support roller, the adjusting roller, and the second support roller. The second support frame is provided with a third support roller, on which the second cable is tensioned. The balance control component can control the height of the adjusting roller according to the longitudinal inclination angle of the slipform. Therefore, in use, the first winch and the second winch are installed alternately at corresponding installation positions on the top of the rockfill dam. Simultaneously, the first support frame and the second support frame are installed correspondingly to the first winch and the second winch, respectively. Then, the first cable is connected to one end of the slipform, and the second cable is connected to the other end of the slipform, so that the slipform can be lowered and lifted by the first winch and the second winch.

[0008] During the process of lifting the slipform by the first winch and the second winch, the balance control component can control the height of the adjusting roller according to the longitudinal tilt angle of the slipform. By changing the height of the adjusting roller, the length of the first cable suspended on the water-facing surface of the dam can be adjusted, so that the lengths of the first cable and the second cable suspended on the water-facing surface of the dam are matched, thus avoiding a large longitudinal tilt of the slipform.

[0009] Therefore, the concrete panel rockfill dam panel formwork traction device provided by the present invention can improve the situation of asynchronous cable winding at both ends of the slipform, prevent the slipform from having a large longitudinal tilt, thereby avoiding the situation of "formwork running away", so as to ensure the pouring quality of the concrete panel rockfill dam panel.

[0010] In an optional embodiment of this application, the first support frame is equipped with a hydraulic jack, which is used to lift the adjusting roller to facilitate the adjustment of the height of the adjusting roller.

[0011] In an optional embodiment of this application, the balance control component includes: a balance cylinder, which is mounted parallel to the sliding mold in the working state, with one end of the balance cylinder hinged to the sliding mold and the other end hinged to the first cable; an oil inlet control valve, which is connected in series between the oil pressure chamber of the hydraulic jack and the oil outlet of the hydraulic pump station, and is linked to the balance cylinder; and an oil drain control valve, which is connected in series between the oil pressure chamber of the hydraulic jack and the oil reservoir, and is linked to the balance cylinder; wherein, when the balance cylinder is tilted downwards, the balance cylinder drives the oil drain control valve to open, and when the balance cylinder is tilted upwards, the balance cylinder drives the oil inlet control valve to open, so as to ensure that the balance control component can control the height of the adjusting roller according to the longitudinal tilt angle of the sliding mold.

[0012] In an optional embodiment of this application, the hydraulic jack includes: a jacking cylinder; a jacking piston disposed within the jacking cylinder and adapted to the inner cavity of the jacking cylinder, the jacking piston dividing the inner cavity of the jacking cylinder into a hydraulic chamber and a movable chamber; and a jacking rod, one end of which passes through the movable chamber and is fixedly connected to the jacking piston, the other end of which is drivenly connected to the adjusting roller to ensure that the hydraulic jack can extend and retract under the control of the balance control component.

[0013] In an optional embodiment of this application, the balance cylinder is equipped with a mounting rod, one end of which is hinged to the balance cylinder and the other end is used to fix it to the sliding mold, so as to ensure that the balance cylinder can tilt synchronously with the sliding mold.

[0014] In an optional embodiment of this application, the balance cylinder includes: a balance cylinder body; a balance piston disposed within the balance cylinder body, the balance piston being adapted to the inner cavity of the balance cylinder body and insulated from the balance cylinder body, conductive contacts being provided at both ends of the balance piston, the balance piston dividing the inner cavity of the balance cylinder body into an oil drain control cavity and a lifting control cavity; and a balance control rod, one end of the balance control rod passing through the oil drain control cavity and fixedly connected to the lifting piston, the other end of the balance control rod being connected to the first cable. The system includes: a hinged connection; an oil drain contact plate, which is insulated and installed within the oil drain control chamber and capable of moving axially along the balance cylinder and automatically resetting; the oil drain contact plate being electrically connected to the oil drain control valve; and an oil inlet contact plate, which is insulated and installed within the lifting control chamber and capable of moving axially along the balance cylinder and automatically resetting; the oil inlet contact plate being electrically connected to the oil inlet control valve, to ensure that the balance cylinder can drive the corresponding oil inlet control valve and oil drain control valve to perform corresponding actions according to its tilt state.

[0015] In an optional embodiment of this application, the oil inlet control valve is a pilot-operated solenoid valve, ensuring that the oil inlet control valve can make corresponding actions according to the tilt state of the balance cylinder.

[0016] In an optional embodiment of this application, the oil drain control valve is a pilot-operated solenoid valve, ensuring that the oil drain control valve can make corresponding actions according to the tilt state of the balance cylinder.

[0017] In an optional embodiment of this application, a sliding frame is further included, which is slidably connected to the first support frame; the adjusting roller is mounted on the sliding frame; the first support roller and the second support roller are symmetrically arranged about the sliding direction of the sliding frame to ensure that the adjusting roller has sufficient stability during the process of adjusting the height of the adjusting roller.

[0018] In an optional embodiment of this application, the first support roller, the adjusting roller, the second support roller, and the third support roller are all grooved rollers to prevent the cable from slipping off the corresponding roller body.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] The present invention provides a concrete-faced rockfill dam panel formwork traction device, comprising a first winch, a first support frame, a second winch, a second support frame, and a balance control component. The first winch is equipped with a first cable, and the second winch is equipped with a second cable. The first support frame is provided with a first support roller, an adjusting roller, and a second support roller. The height of the adjusting roller can adjust the tension of the first cable on the first support roller, the adjusting roller, and the second support roller. The second support frame is provided with a third support roller, on which the second cable is tensioned. The balance control component can control the height of the adjusting roller according to the longitudinal tilt angle of the slipform. During the lifting of the slipform by the first and second winches, the balance control component can control the height of the adjusting roller according to the longitudinal tilt angle of the slipform. By changing the height of the adjusting roller, the length of the first cable suspended on the water-facing surface of the dam body is adjusted, thereby ensuring that the lengths of the first and second cables suspended on the water-facing surface of the dam body are matched, avoiding large-angle longitudinal tilting of the slipform, thus preventing "formwork slippage" and ensuring the pouring quality of the concrete-faced rockfill dam panel. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] In the attached diagram:

[0023] Figure 1 This is a top view schematic diagram of the concrete panel rockfill dam panel formwork traction device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the first support frame according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the hydraulic jacking device according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the control principle of the balance control component in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the balance cylinder according to an embodiment of the present invention.

[0028] The attached diagram shows the markings and corresponding component names:

[0029] 10-First winch, 11-First cable, 20-First support frame, 21-First support roller, 22-Adjusting roller, 23-Second support roller, 24-Sliding frame, 30-Second winch, 31-Second cable, 40-Second support frame, 41-Third support roller, 50-Hydraulic jack, 51-Lifting cylinder, 52-Lifting piston, 53-Hydraulic chamber, 54-Moving chamber, 55-Lifting rod, 60-Balance cylinder, 61-Mounting rod, 62-Balance cylinder, 63-Balance piston, 64-Oil drain control chamber, 65-Lifting control chamber, 66-Balance control rod, 67-Oil drain movable contact plate, 68-Oil inlet movable contact plate, 70-Oil inlet control valve, 80-Oil drain control valve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the embodiments of this application, the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships that the device is conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "set up," "install," "connect," and "link" should be interpreted broadly. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Example

[0033] Combination Figure 1 and Figure 2 This embodiment provides a concrete-faced rockfill dam panel formwork traction device, comprising: a first winch 10, the first winch 10 being adapted to a first cable 11; a first support frame 20, the first support frame 20 being provided with a first support roller 21, an adjusting roller 22, and a second support roller 23, the first support roller 21, the adjusting roller 22, and the second support roller 23 being used to tension the first cable 11, the height of the adjusting roller 22 being adjustable, and the first support roller 21, the adjusting roller 22, and the second support roller 23 being arranged sequentially at intervals along the length direction of the first cable 11; a second winch 30, the second winch 30 being adapted to a second cable 31; a second support frame 40, the second support frame 40 being provided with a third support roller 41, the third support roller 41 being used to tension the second cable 31; and a balance control component, the balance control component being able to control the height of the adjusting roller 22 according to the longitudinal tilt angle of the slipform.

[0034] Specifically, the first support frame 20 is equipped with a hydraulic jack 50, which is used to lift the adjusting roller 22 so as to adjust the height of the adjusting roller 22.

[0035] Combination Figure 3 The hydraulic jack 50 includes: a jacking cylinder 51; a jacking piston 52, which is disposed inside the jacking cylinder 51 and adapted to the inner cavity of the jacking cylinder 51, dividing the inner cavity of the jacking cylinder 51 into a hydraulic chamber 53 and a movable chamber 54; and a jacking rod 55, one end of which passes through the movable chamber 54 and is fixedly connected to the jacking piston 52, and the other end of which is throttle-connected to the adjusting roller 22 to ensure that the hydraulic jack 50 can extend and retract under the control of the balance control component.

[0036] Combination Figure 2It is understood that this embodiment also includes a sliding frame 24, which is slidably connected to the first support frame 20; the adjusting roller 22 is mounted on the sliding frame 24, and the sliding frame 24 is drivenly connected (hinged or fixedly connected) to the lifting rod 55 of the hydraulic jack 50; the first support roller 21 and the second support roller 23 are symmetrically arranged about the sliding direction of the sliding frame 24 to ensure that the adjusting roller 22 has sufficient stability during the process of adjusting the height of the adjusting roller 22.

[0037] Typically, the first support roller 21, the adjusting roller 22, the second support roller 23, and the third support roller 41 are all grooved rollers to prevent the cable from slipping off the corresponding roller body.

[0038] Combination Figure 4 The balance control assembly includes: a balance cylinder, which is mounted parallel to the sliding mold in the working state, with one end hinged to the sliding mold and the other end hinged to the first cable 11; an oil inlet control valve 70, which is connected in series between the oil pressure chamber 53 of the hydraulic jack 50 and the oil outlet of the hydraulic pump station, and is linked to the balance cylinder; and an oil drain control valve 80, which is connected in series between the oil pressure chamber 53 of the hydraulic jack 50 and the oil reservoir, and is linked to the balance cylinder. When the balance cylinder is tilted downwards, it drives the oil drain control valve 80 to open; when the balance cylinder is tilted upwards, it drives the oil inlet control valve 70 to open, ensuring that the balance control assembly can control the height of the adjusting roller 22 according to the longitudinal tilt angle of the sliding mold.

[0039] In this embodiment, the balance cylinder is equipped with a mounting rod 61. One end of the mounting rod 61 is hinged to the balance cylinder, and the other end is used to fix it to the sliding mold to ensure that the balance cylinder can tilt synchronously with the sliding mold.

[0040] Combination Figure 5The balance cylinder includes: a balance cylinder body 62; a balance piston 63, which is disposed within the balance cylinder body 62 and is adapted to and insulated from the inner cavity of the balance cylinder body 62. Both ends of the balance piston 63 are provided with conductive contacts, and the balance piston 63 divides the inner cavity of the balance cylinder body 62 into an oil drain control chamber 64 and a lifting control chamber 65; a balance control rod 66, one end of which passes through the oil drain control chamber 64 and is fixedly connected to the lifting piston 52, and the other end of which is hinged to the first cable 11; Oil-operated contact 67, the drain contact 67 is insulated and installed in the drain control chamber 64, and can move axially along the balance cylinder 62 and automatically reset. The drain contact 67 is electrically connected to the drain control valve 80. Oil-inlet contact 68, the insulated contact 68 is installed in the lifting control chamber 65, the oil-inlet contact 68 can move axially along the balance cylinder 62 and automatically reset. The oil-inlet contact 68 is electrically connected to the oil-inlet control valve 70, so as to ensure that the balance cylinder can drive the corresponding oil-inlet control valve 70 and drain control valve 80 to perform corresponding actions according to its tilt state.

[0041] Specifically, a first push spring is installed in the oil drain control chamber 64. One end of the first push spring is fixedly connected to the end of the balance cylinder 62 facing the first cable 11, and the other end is fixedly connected to the oil drain movable contact plate 67. Simultaneously, both the first push spring and the oil inlet contact plate are spaced apart and sleeved on the balance control rod 66. When the first push spring is in its natural state, the oil drain movable contact plate 67 and the corresponding end component of the balance piston 63 are spaced apart. Correspondingly, a second push spring is installed in the oil inlet control chamber. One end of the second push spring is fixedly connected to the end of the balance cylinder 62 facing the mounting rod 61, and the other end is fixedly connected to the oil inlet movable contact plate 68. When the second push spring is in its natural state, the corresponding end component of the oil inlet movable contact plate 68 and the balance piston 63 are spaced apart.

[0042] Since the balance piston 63 is adapted to the balance cylinder 62, one end of the balance control rod 66 passes through the oil drain control chamber 64 and is fixedly connected to the lifting piston 52, while the other end is hinged to the first cable 11. One end of the mounting rod 61 is hinged to the balance cylinder, and the other end is fixedly connected to the sliding mold. When the length of the first cable 11 suspended on the water-facing side of the dam is greater than that of the second cable 31, the sliding mold tilts downward, and the mounting rod 61 tilts towards the first cable 11, thereby causing the balance cylinder to tilt downward. At this time, the hinge point between the balance control rod 66 and the first cable 11 is connected to the balance cylinder. The distance between the cylinder body 62 and the mounting rod 61 is shortened, thereby driving the balance control rod 66 through the first cable 11 to push the balance piston 63 towards the mounting rod 61, so that the balance piston 63 contacts the oil inlet moving contact plate 68, thereby turning on the power of the oil inlet control valve 70, driving the oil inlet control valve 70 to open, so as to input hydraulic oil into the oil pressure chamber 53 of the hydraulic jack 50, and then push the sliding frame 24 upward, raising the height of the adjusting roller 22, and finally shortening the length of the first cable 11 suspended on the water-facing side of the dam body, and adjusting the smooth mold.

[0043] When the length of the first cable 11 suspended on the water-facing side of the dam is less than that of the second cable 31, the sliding mold tilts upward and the mounting rod 61 tilts towards the second cable 31, thereby causing the balance cylinder to tilt upward. At this time, the distance between the hinge of the balance control rod 66 and the first cable 11 and the hinge of the balance cylinder 62 and the mounting rod 61 becomes longer. This causes the balance control rod 66 to pull the balance piston 63 towards the first cable 11, making the balance piston 63 contact the oil drain contact piece 67, thereby turning on the power supply of the oil drain control valve 80 and driving the oil drain control valve 80 to open, so as to drain the hydraulic oil in the oil pressure chamber 53 of the hydraulic jack 50 into the oil storage tank. Under the lateral pressure of the first cable 11, the sliding frame 24 is pushed downward to lower the height of the adjusting roller 22, ultimately causing the section of the first cable 11 suspended on the water-facing side of the dam to extend, thereby adjusting the sliding mold.

[0044] Therefore, by tilting the balance cylinder, the power supply to the oil inlet control valve 70 and the oil outlet control valve 80 is controlled. There is no force transmission between the balance cylinder and the oil inlet control valve 70 and the oil outlet control valve 80. The structure is simple, requiring only cable connection, and there is no delay. The length of the first cable 11 can be adjusted in real time according to the tilt angle of the slipform. Compared with hydraulic linkage, it can avoid false triggering caused by deformation of the oil pipeline cross-section and temperature changes in the construction environment; compared with wireless communication connection, it can avoid electromagnetic interference (during construction, walkie-talkie communication is required, and the valves are placed close to the winch).

[0045] It is understood that the oil inlet control valve 70 is a pilot-operated solenoid valve, so that after the oil inlet control valve 70 is energized, the valve core of the oil inlet control valve 70 is driven by the electromagnetic driving force and the hydraulic pressure of the hydraulic oil pump station, which can drive its valve core to move and connect the hydraulic jack 50 and the hydraulic oil pump station, thereby ensuring that the oil inlet control valve 70 can make corresponding actions according to the tilt state of the balance cylinder.

[0046] Similarly, the drain control valve 80 is a pilot-operated solenoid valve, so that after being energized, the valve core of the drain control valve 80 is driven by the electromagnetic driving force and the hydraulic pressure in the oil pressure chamber 53 of the hydraulic jack 50, which can drive its valve core to move and connect the hydraulic jack 50 and the oil tank, ensuring that the drain control valve 80 can make corresponding actions according to the tilt state of the balance cylinder.

[0047] In summary, the concrete panel rockfill dam panel formwork traction device provided in this embodiment includes a first winch 10, a first support frame 20, a second winch 30, a second support frame 40, and a balance control component. The first winch 10 is equipped with a first cable 11, and the second winch 30 is equipped with a second cable 31. The first support frame 20 is provided with a first support roller 21, an adjusting roller 22, and a second support roller 23. The height of the adjusting roller 22 can adjust the first cable 11, which is tensioned on the first support roller 21, the adjusting roller 22, and the second support roller 23. The second support frame 40 is provided with a third support roller 41, and the second cable 31 is tensioned on the third support roller 41. The balance control component can control the height of the adjusting roller 22 according to the longitudinal tilt angle of the slipform. The balance control component includes a balance cylinder, an oil inlet control valve 70, and an oil drain control valve 80. When the balance cylinder is tilted, it can control the opening of the oil inlet control valve 70 or the opening of the oil drain control valve 80, thereby controlling the height of the adjusting roller 22.

[0048] In use, the first winch 10 and the second winch 30 are installed at intervals at corresponding installation positions on the top of the rockfill dam. At the same time, the first support frame 20 and the second support frame 40 are installed corresponding to the first winch 10 and the second winch 30, respectively. Then, the first cable 11 is connected to one end of the slipform and the second cable 31 is connected to the other end of the slipform, so that the slipform can be lowered and lifted by the first winch 10 and the second winch 30.

[0049] During the lifting of the slipform by the first winch 10 and the second winch 30, if the length of the first cable 11 suspended on the water-facing side of the dam is greater than that of the second cable 31, the slipform tilts downward and the mounting rod 61 tilts towards the first cable 11, thereby causing the balance cylinder to tilt downward. At this time, the distance between the hinge point of the balance control rod 66 and the first cable 11 and the hinge point between the balance cylinder 62 and the mounting rod 61 is shortened. This causes the first cable 11 to drive the balance control rod 66 to push the balance piston 63 towards the mounting rod 61, so that the balance piston 63 contacts the oil inlet movable contact piece 68, thereby conducting the oil flow. The power supply to the oil control valve 70 drives the oil inlet control valve 70 to open, so as to input hydraulic oil into the oil pressure chamber 53 of the hydraulic jack 50, which in turn pushes the sliding frame 24 upward, raises the height of the adjusting roller 22, and finally shortens the length of the first cable 11 suspended on the water-facing side of the dam (one end of the first cable 11 is connected to the sliding mold, and the other end is wound on the first winch 10. Therefore, when the height of the adjusting roller 22 changes, the length of the first cable 11 section between the first support roller 21 and the second support roller 23 will change, thereby adjusting the length of the first cable 11 suspended on the dam), and adjusts the sliding mold.

[0050] If the length of the first cable 11 suspended on the water-facing side of the dam is less than that of the second cable 31, the sliding mold tilts upward and the mounting rod 61 tilts towards the second cable 31, thereby causing the balance cylinder to tilt upward. At this time, the distance between the hinge of the balance control rod 66 and the first cable 11 and the hinge of the balance cylinder 62 and the mounting rod 61 becomes longer. This causes the balance control rod 66 to pull the balance piston 63 towards the first cable 11, making the balance piston 63 contact the oil drain contact 67, thereby turning on the power to the oil drain control valve 80 and driving the oil drain control valve 80 to open, so as to drain the hydraulic oil in the oil pressure chamber 53 of the hydraulic jack 50 into the oil storage tank. Under the lateral pressure of the first cable 11, the sliding frame 24 is pushed downward to lower the height of the adjusting roller 22, ultimately causing the section of the first cable 11 suspended on the water-facing side of the dam to extend, thereby adjusting the sliding mold.

[0051] Therefore, by adjusting the height of the roller 22, the length of the first cable 11 suspended on the water-facing surface of the dam is adjusted, so that the lengths of the first cable 11 and the second cable 31 suspended on the water-facing surface of the dam are matched, thus avoiding a large longitudinal tilt of the slipform.

[0052] In summary, the concrete panel rockfill dam panel formwork traction device provided in this embodiment can improve the situation of asynchronous cable winding at both ends of the slipform, prevent the slipform from having a large longitudinal tilt, thereby avoiding the situation of "formwork running away", so as to ensure the pouring quality of the concrete panel rockfill dam panel.

[0053] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A formwork traction device for a concrete-faced rockfill dam panel, characterized in that, include: The first winch (10) is adapted to the first cable (11). A first support frame (20) is provided with a first support roller (21), an adjusting roller (22), and a second support roller (23). The first support roller (21), the adjusting roller (22), and the second support roller (23) are used to tension the first cable (11). The height of the adjusting roller (22) is adjustable. The first support roller (21), the adjusting roller (22), and the second support roller (23) are arranged at intervals along the length of the first cable (11). The first support frame (20) is equipped with a hydraulic jack (50), which is used to lift the adjusting roller (22). The second winch (30) is adapted to the second cable (31); The second support frame (40) is provided with a third support roller (41), which is used to tension the second cable (31). A balance control component, which controls the height of the adjusting roller (22) according to the longitudinal tilt angle of the sliding mold, the balance control component comprising: The balance cylinder (60) is installed parallel to the sliding mold in the working state, and one end of the balance cylinder (60) is hinged to the sliding mold and the other end is hinged to the first cable (11) in the working state. Oil inlet control valve (70) is connected in series between the oil pressure chamber (53) of the hydraulic jack (50) and the oil outlet of the hydraulic pump station, and the oil inlet control valve (70) is linked with the balance cylinder (60). Oil drain control valve (80) is connected in series between the oil pressure chamber (53) of the hydraulic jack (50) and the oil reservoir, and the oil drain control valve (80) is linked with the balance cylinder (60); When the balance cylinder (60) is tilted downwards, the balance cylinder (60) drives the oil drain control valve (80) to open; when the balance cylinder (60) is tilted upwards, the balance cylinder (60) drives the oil inlet control valve (70) to open.

2. The concrete-faced rockfill dam panel formwork traction device according to claim 1, characterized in that, The hydraulic jack (50) includes: Lifting cylinder (51); Lifting piston (52), the lifting piston (52) is disposed in the lifting cylinder (51), and the lifting piston (52) is adapted to the inner cavity of the lifting cylinder (51). The lifting piston (52) divides the inner cavity of the lifting cylinder (51) into a hydraulic chamber (53) and a movable chamber (54). A lifting rod (55) is provided, with one end of which passes through the movable cavity (54) and is fixedly connected to the lifting piston (52), and the other end of which is connected to the adjusting roller (22) in a transmission manner.

3. The concrete-faced rockfill dam panel formwork traction device according to claim 2, characterized in that, The balance cylinder (60) is equipped with a mounting rod (61), one end of which is hinged to the balance cylinder (60) and the other end is used for fixed connection with the sliding mold.

4. The concrete-faced rockfill dam panel formwork traction device according to claim 3, characterized in that, The balance cylinder (60) includes: Balance cylinder block (62); A balance piston (63) is disposed inside the balance cylinder (62), and the balance piston (63) is adapted to the inner cavity of the balance cylinder (62) and insulated from the balance cylinder (62). Both ends of the balance piston (63) are provided with conductive contact pieces. The balance piston (63) divides the inner cavity of the balance cylinder (62) into an oil drain control chamber (64) and a lifting control chamber (65). A balance control rod (66) is provided, one end of which passes through the oil drain control chamber (64) and is fixedly connected to the lifting piston (52), and the other end of which is hinged to the first cable (11). Oil drain contact (67) is insulatedly installed in the oil drain control cavity (64) and can move along the axial direction of the balance cylinder (62) and automatically reset. The oil drain contact (67) is electrically connected to the oil drain control valve (80). Oil inlet movable contact (68) is insulatedly installed in the lifting control cavity (65). The oil inlet movable contact (68) can move along the axial direction of the balance cylinder (62) and automatically reset. The oil inlet movable contact (68) is electrically connected to the oil inlet control valve (70).

5. The concrete-faced rockfill dam panel formwork pulling device according to claim 4, characterized in that, The oil inlet control valve (70) is a pilot-operated solenoid valve.

6. The concrete-faced rockfill dam panel formwork pulling device according to claim 4, characterized in that, The oil drain control valve (80) is a pilot-operated solenoid valve.

7. The concrete-faced rockfill dam panel formwork traction device according to any one of claims 1 to 6, characterized in that, It also includes a sliding frame (24), which is slidably connected to the first support frame (20); The adjusting roller (22) is mounted on the sliding frame (24); The first support roller (21) and the second support roller (23) are symmetrically arranged about the sliding direction of the sliding frame (24).

8. The concrete-faced rockfill dam panel formwork traction device according to claim 7, characterized in that, The first support roller (21), the adjusting roller (22), the second support roller (23) and the third support roller (41) are all grooved rollers.

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