Large-span slip form device and concave-convex curved surface slip form method for ship lock overflow weir

Abstract

The large-span slip form device comprises a Z-shaped support, a telescopic swing arm and a winch, the Y-direction of the bottom end of the Z-shaped support is fixedly arranged on the ground of the upstream / downstream face of the ship lock overflow weir, and the middle of the Z-shaped support lifts and supports the telescopic swing arm in the Z-direction. The top end of the Z-shaped support extends to the position above the ship lock overflow weir in the Y direction and is fixedly provided with a winch. The bottom end of the telescopic swing arm is rotationally provided with a sliding mode machine extending in the X direction on the YZ vertical plane, the swing radius of the telescopic swing arm is adjusted, and the telescopic swing arm is connected to the Z-shaped support with the top end of the middle of the Z-shaped support as the circle center; and the power output end of the winch is hung and fixed on the side wall of the slip form machine through a steel wire rope. According to the device and method, slip-form forming construction of the concave-convex curved surface of the overflow weir can be achieved, improvement is conducted on the positioning and sliding guiding principle of a slip-form machine, and the device and method are particularly suitable for surface slip-form construction of a large-span concrete slope.

Description

Technical Field

[0001] The invention relates to the technical field of ship lock construction, and in particular to a large-span slipform device for a ship lock overflow weir and a concave-convex curved surface slipform method. Background Art

[0002] At present, the surface structure of large-area concrete slopes of dams, reservoirs, and ship locks is mostly constructed by horizontal or vertical formwork, such as:

[0003] 1. Chinese patent CN116497769A discloses a concrete slipform lining machine for dam and reservoir basin panels, including transverse guide rails, longitudinal truss cranes and panel slipform lifting vehicles, wherein the longitudinal truss cranes include truss vehicle bodies, crane bases and first lifting hydraulic cylinders, and the panel slipform lifting vehicles include vehicle frames, mold bodies, spiral feeders and auxiliary platforms, and the mold bodies and the vehicle frames are connected by second lifting hydraulic cylinders. The present invention realizes longitudinal non-ground rail sliding and transverse rail sliding of the panel slipform lifting vehicles by installing transverse guide rails and longitudinal truss cranes, and the crane transfer between warehouses is fast and convenient, wherein the longitudinal truss crane provides strong support for the template, increases the stability of the template operation, improves the controllability of the panel thickness, and makes the panel thickness uniform and convenient for demoulding; in addition, by installing a height-adjustable mold body, the height of the template can be adjusted in real time with the deflection deformation of the longitudinal truss crane, ensuring that the cushion layer and panel surface formed by construction are flat.

[0004] The above patent and equipment represent the current transverse formwork construction technology for large-area concrete slope surface structures. Its working principle is that the slipform machine spans the top and bottom of the slope, and the slipform construction is carried out by moving the slipform machine horizontally.

[0005] The advantages of this process are large single slipform span, high construction efficiency, and high consistency of slipform paving effect on large-area slopes;

[0006] The defect of this process is that the large span of the slipform leads to greater stress in the middle section of the main beam of the slipform machine, which can easily cause the main beam to break. That is, although the slipform effect of the device structure is significant, it is limited by the strength of the main structure material and has a very high failure rate in actual construction. In addition, the main beam must be returned to the factory for replacement of parts due to its breakage and cannot be repaired on-site, resulting in no significant effect on the overall construction period and workload of the project.

[0007] 2. Chinese patent CN118814717A discloses a slipform wheel bracket for the tail of a concrete panel of an ultra-high gravel dam, comprising an electric winch A and an electric winch B correspondingly arranged on the dam surface construction platform, the electric winch A is connected to the wheel bracket A through a traction wire rope A, the electric winch B is connected to the wheel bracket B through a traction wire rope B, and the wheel bracket A and the wheel bracket B are correspondingly arranged on the slope surface of the dam body. The slipform wheel bracket for the tail of a concrete panel of an ultra-high gravel dam of the present invention solves the problem that when the concrete panel is cast in multiple stages and the slipform drags the top end mold from the bottom of the panel along the side mold, the slipform cannot be separated from the concrete surface of the panel.

[0008] The above-mentioned patent and equipment represent the current longitudinal formwork construction technology for large-area concrete slope surface structures. Its working principle is that the slipform machine spans the slope, and the towing equipment of the slipform machine is installed on the top of the slope. The slipform machine is driven from the bottom of the slope to the top of the slope by the gravity of the slipform machine or its counterweight, or in the tracks installed on both sides of the slipform machine, to realize slipform construction.

[0009] The advantages of this process are small slipform span, small bending stress in the middle of the slipform machine and low failure rate, but its disadvantage is that multiple slipforms are required to achieve slipform construction of large concrete slopes.

[0010] In addition, both of the above-mentioned two construction methods have a defect, that is, it is impossible to use sliding molds to process curved slopes, especially in the three-level water-saving ship lock construction project of the Pinglu Canal in Qinzhou, Guangxi. When the ship lock overflow weir is constructed, due to the structural characteristics of the overflow weir, one side faces the water and the other side faces the water, especially the back surface. In order to reduce the impact force of water overflowing from the top of the overflow weir on the back surface of the overflow weir, the back surface of the overflow weir is designed as a combination of concave and convex curved surfaces. This structure is difficult to construct regardless of whether it is using the existing horizontal drawing method or the longitudinal drawing method.

[0011] In summary, how to provide a device suitable for large-span slipforms and capable of adaptive slipform construction according to the design radius of concave and convex curved surfaces has become a technical problem that needs to be urgently solved by personnel in this field. Summary of the invention

[0012] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a large-span slipform device and a concave-convex curved surface slipform method for a ship lock overflow weir. The device and method can realize the slipform forming construction of the concave-convex curved surface of the overflow weir, and improvements are made on the positioning and sliding guide principles of the slipform machine, and are particularly suitable for the surface slipform construction of large-span concrete slopes.

[0013] A large-span slipform device for a ship lock overflow weir of the present invention comprises a slipform machine, wherein the horizontal extension direction of the ship lock overflow weir is defined as the lower X direction, the horizontal connection direction of the slipform machine and the ship lock overflow weir is defined as the Y direction, and the gravity direction is defined as the Z direction;

[0014] The slipform device also includes a Z-shaped bracket, a telescopic swing arm and a winch, wherein the bottom end of the Z-shaped bracket is fixed in the Y direction on the ground on the front / rear water surface of the ship lock overflow weir, the middle part of the Z-shaped bracket is raised in the Z direction to support the telescopic swing arm, and the top end of the Z-shaped bracket extends in the Y direction to the top of the ship lock overflow weir and is fixed with a winch;

[0015] The bottom end of the telescopic swing arm is rotated on the YZ vertical plane to set up a slipform machine extending in the X direction. The swing radius of the telescopic swing arm is adjusted and connected to the Z-shaped bracket with the top of the middle part of the Z-shaped bracket as the center of the circle;

[0016] The power output end of the winch is hung and fixed on the side wall of the slipform machine through a wire rope.

[0017] Preferably, the telescopic swing arm comprises a rotating beam, a through-axis motor, a threaded rod and a bearing connection seat;

[0018] The rotating beam extends in the X direction and is rotatably mounted on the top of the middle part of the Z-shaped bracket in the YZ vertical plane, and a through-axis motor is fixed on one side of the rotating beam;

[0019] The threaded rod penetrates the rotating beam in the circumferential and axial sliding directions, and the threaded section of the threaded rod is coaxially penetrated and connected inside the through-axis motor, and the through-axis motor provides axial extension and contraction power for the threaded rod;

[0020] The inner ring seat of the bearing connection seat is fixedly arranged at both ends of the slipform machine in the X direction, and the outer ring seat of the bearing connection seat is fixedly connected to the bottom end of the threaded rod.

[0021] Preferably, the winch provides rotational power on the YZ vertical plane to the slipform machine and the telescopic swing arm by traction wire rope.

[0022] A concave-convex surface sliding form method for a large-span sliding form device of a ship lock overflow weir comprises the following steps:

[0023] S1. First, select the water-facing or water-receiving side of the ship lock overflow weir for slipform construction, and then install the slipform device according to the top height and the lowest point of the bottom Y direction of the ship lock overflow weir, so that the winch is located above the ship lock overflow weir;

[0024] S2. The winch releases the wire, and the through-shaft motor drives the threaded rod downward, so that the slipform machine at the bottom of the telescopic swing arm is located at the lowest point of the ship lock overflow weir, and then the slipform machine is used to grout and smoothen the rough surface of the ship lock overflow weir;

[0025] S3. The winch slowly reels in the wire, and the reeling action of the winch provides the slipform machine and the telescopic swing arm with dragging power that changes the inclination angle and is tangentially parallel to the construction surface; in this process, the through-shaft motor drives the threaded rod to extend and retract to adjust the concave / convex surface radius of the construction surface;

[0026] S4. After the current YZ plane range slipform construction is completed, the overall slipform device is translated in the X direction until the current construction surface is fully constructed, and then the overall slipform device is installed on the other side of the ship lock overflow weir for slipform construction.

[0027] The advantages and technical effects of the present invention are:

[0028] The large-span sliding form device and concave-convex curved surface sliding form method of a ship lock overflow weir of the present invention have the following functions:

[0029] 1. Z-shaped bracket: The Z-shaped bracket provides positioning support for the telescopic swing arm and winch to reach the working position above one side of the ship lock overflow weir, and the bottom of the Z-shaped bracket and the ground fixed part are used to press the counterweight and form a triangular sliding form support structure with variable side length and angle. The three points of the triangle are: the connection position between the sliding form machine and the wire rope, and the rotating and telescopic connection position between the winch and the Z-shaped bracket and the telescopic swing arm.

[0030] 2. Telescopic swing arm: The rotating beam of the telescopic swing arm provides swing support for the through-axis motor relative to the Z-shaped bracket, and provides coaxial constraint for the threaded rod. The through-axis motor provides telescopic power for the threaded rod, that is, adjusting the telescopic amount of the threaded rod with the axis of the rotating beam as the center of the circle is to adjust the slipform radius of the slipform machine, so as to adapt to the slipform construction of concave and convex arc surfaces with different radii.

[0031] 3. Winch: The winch provides swinging power for the slipform machine through the steel wire rope wound on it. At the same time, both ends of the slipform machine are rotatably connected to the bottom end of the threaded rod through the bearing connection seat, that is, the slipform machine is provided with supporting force on the YZ vertical plane by the threaded rod, and does not affect the adaptive rotation of the slipform machine relative to the threaded rod, so as to realize the adaptive adjustment of the slipform surface inclination angle of the slipform machine on different concave and convex surfaces by the weight of the slipform machine, the resistance during the slipform plastering and the tension of the steel wire rope, so as to make the slipform effect smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention (looking straight at 45°);

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention (rear view 45°);

[0034] Figure 3 It is a side view of the present invention (the slipform construction is near the start stage, taking the back water surface construction as an example);

[0035] Figure 4 It is a side view of the present invention (the slipform construction is nearing the end stage, taking the back water surface construction as an example);

[0036] Figure 5 A schematic diagram of the concave-convex curved surface structure of the ship lock overflow weir constructed by the present invention;

[0037] In the figure: 1-Z-shaped bracket; 2-rotating beam; 3-through-shaft motor; 4-threaded rod; 5-winch; 6-ship lock overflow weir; 7-slipform machine; 8-bearing connecting seat; 9-wire rope. DETAILED DESCRIPTION

[0038] The embodiments of the invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and cannot be understood as limiting the invention.

[0039] A large-span slipform device for a ship lock overflow weir of the present invention comprises a slipform machine 7, wherein the horizontal extension direction of the ship lock overflow weir 6 is defined as the lower X direction, the horizontal connection direction of the slipform machine and the ship lock overflow weir is defined as the Y direction, and the gravity direction is defined as the Z direction;

[0040] The slipform device also includes a Z-shaped bracket 1, a telescopic swing arm and a winch 5, wherein the bottom end of the Z-shaped bracket is fixed in the Y direction on the ground on the front / rear water surface of the ship lock overflow weir, the middle part of the Z-shaped bracket is raised in the Z direction to support the telescopic swing arm, and the top end of the Z-shaped bracket extends in the Y direction to the top of the ship lock overflow weir and is fixed with a winch;

[0041] The bottom end of the telescopic swing arm is rotated on the YZ vertical plane to set up a slipform machine extending in the X direction. The swing radius of the telescopic swing arm is adjusted and connected to the Z-shaped bracket with the top of the middle part of the Z-shaped bracket as the center of the circle;

[0042] The power output end of the winch is hung and fixed on the side wall of the slipform machine through a steel wire rope 9.

[0043] Preferably, the telescopic swing arm comprises a rotating beam 2, a through-axis motor 3, a threaded rod 4 and a bearing connection seat 8;

[0044] The rotating beam extends in the X direction and is rotatably mounted on the top of the middle part of the Z-shaped bracket in the YZ vertical plane, and a through-axis motor is fixed on one side of the rotating beam;

[0045] The threaded rod penetrates the rotating beam in the circumferential and axial sliding directions, and the threaded section of the threaded rod is coaxially penetrated and connected inside the through-axis motor, and the through-axis motor provides axial extension and contraction power for the threaded rod;

[0046] The inner ring seat of the bearing connection seat is fixedly arranged at both ends of the slipform machine in the X direction, and the outer ring seat of the bearing connection seat is fixedly connected to the bottom end of the threaded rod.

[0047] Preferably, the winch provides rotational power on the YZ vertical plane to the slipform machine and the telescopic swing arm by traction wire rope.

[0048] A concave-convex surface sliding form method for a large-span sliding form device of a ship lock overflow weir comprises the following steps:

[0049] S1. First, select the water-facing or water-receiving side of the ship lock overflow weir for slipform construction, and then install the slipform device according to the top height and the lowest point of the bottom Y direction of the ship lock overflow weir, so that the winch is located above the ship lock overflow weir;

[0050] S2. The winch releases the wire, and the through-shaft motor drives the threaded rod downward, so that the slipform machine at the bottom of the telescopic swing arm is located at the lowest point of the ship lock overflow weir, and then the slipform machine is used to grout and smoothen the rough surface of the ship lock overflow weir;

[0051] S3. The winch slowly reels in the wire, and the reeling action of the winch provides the slipform machine and the telescopic swing arm with dragging power that changes the inclination angle and is tangentially parallel to the construction surface; in this process, the through-shaft motor drives the threaded rod to extend and retract to adjust the concave / convex surface radius of the construction surface;

[0052] S4. After the current YZ plane range slipform construction is completed, the overall slipform device is translated in the X direction until the current construction surface is fully constructed, and then the overall slipform device is installed on the other side of the ship lock overflow weir for slipform construction.

[0053] In addition, the present invention preferably has rotating shafts fixedly provided at both ends of the rotating beam along the X-direction, and the rotating shafts are rotatably inserted into the middle top of the Z-shaped bracket; in addition, the middle section of the rotating beam is a polygonal structure, preferably a quadrilateral structure, which is used to provide a fixed installation plane for the through-axis motor on the one hand, and to radially constrain the threaded rod on the other hand, thereby preventing relative torsion between the threaded rod and the rotating beam, which would cause the middle section of the threaded rod to deform due to greater stress.

[0054] In addition, the present invention preferably adopts a mature product in the prior art for the slipform machine, and both ends of the slipform machine housing in the X direction are rotatably connected to threaded rods through bearing connecting seats, and a Y direction side of the slipform machine housing is fixedly hung with a wire rope.

[0055] In addition, the present invention preferably uses a mature product in the prior art as the bearing connection seat, or a larger bearing can be used locally, the bearing inner ring seat is welded to the side wall of the slipform machine, and the bearing outer ring seat is welded to the bottom end of the threaded rod.

[0056] In order to more clearly illustrate the specific implementation mode of the present invention, an embodiment is provided below:

[0057] The present invention discloses a large-span slipform device and a concave-convex curved surface slipform method for a ship lock overflow weir. The longitudinal slipform method is adopted. A telescopic swing arm is used to simulate the radius of a concave-convex curved surface. A through-shaft motor is used to drive a threaded rod to extend and retract to adapt to different concave-convex curved surfaces, especially the slipform construction of arc portions connecting curved surfaces. A winch is then used to provide slipform finishing power to the telescopic swing arm. Compared with the construction method of improving the guide rail of the longitudinal slipform machine in the prior art so that it is changed from a straight line to a curve that adapts to the concave-convex curved surface, the present invention has a wider applicability and can adapt to concave-convex curved surfaces of any radius without having to worry about the problem of the curved guide rail being scrapped after the completion of a single project (because the curvature of the concave-convex surfaces of the back and front surfaces of the ship lock overflow weir are designed to be different according to their different drafts and spans).

[0058] It should be noted that when the slipform machine is at different heights, the distances that the threaded rods extend are different, that is, the distance that the threaded rods are extended and retracted controlled by the through-shaft motor needs to be coordinated with the height to which the slipform machine is lifted by the winch, so that the slipform machine can be constructed along the designed dimensions of the arc surface. That is, the motion trajectory of the slipform machine can be accurately adjusted through the coordinated control of the through-shaft motor and the winch to adapt to the slipform construction of ship lock overflow weirs with different concave and convex arc surfaces and curvatures.

[0059] Finally, all the unexplained parts of the invention adopt mature products and mature technical means in the existing technology.

[0060] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the embodiment or example of the invention.

[0061] Although embodiments of the invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A large-span slipform device for a ship lock overflow weir, comprising a slipform machine, wherein the horizontal extension direction of the ship lock overflow weir is defined as the lower X direction, the horizontal connection direction of the slipform machine and the ship lock overflow weir is defined as the Y direction, and the gravity direction is defined as the Z direction; Features: The slipform device also includes a Z-shaped bracket, a telescopic swing arm and a winch, wherein the bottom end of the Z-shaped bracket is fixed in the Y direction on the ground facing / rear water surface of the ship lock overflow weir, the middle part of the Z-shaped bracket is raised in the Z direction to support the telescopic swing arm, and the top end of the Z-shaped bracket extends in the Y direction to the top of the ship lock overflow weir and is fixed with a winch; The bottom end of the telescopic swing arm is rotated on the YZ vertical plane to set up a slipform machine extending in the X direction, and the swing radius of the telescopic swing arm is adjusted and connected to the Z-shaped bracket with the top of the middle part of the Z-shaped bracket as the center of the circle; The power output end of the winch is hung and fixed on the side wall of the slipform machine through a steel wire rope.

2. A large-span slipform device for a ship lock overflow weir according to claim 1, characterized in that: The telescopic swing arm comprises a rotating beam, a through-shaft motor, a threaded rod and a bearing connection seat; The rotating beam extends in the X direction and is rotatably mounted on the top of the middle part of the Z-shaped bracket in the YZ vertical plane, and a through-axis motor is fixed on one side of the rotating beam; The threaded rod penetrates the rotating beam in the circumferential and axial sliding directions, and the threaded section of the threaded rod is coaxially penetrated and connected to the interior of the through-axis motor, and the through-axis motor provides axial telescopic power for the threaded rod; The inner ring seat of the bearing connection seat is fixedly arranged at both ends of the slipform machine in the X direction, and the outer ring seat of the bearing connection seat is fixedly connected to the bottom end of the threaded rod.

3. A large-span slipform device for a ship lock overflow weir according to claim 1, characterized in that: The winch provides the sliding form machine and the telescopic swing arm with rotational power on the YZ vertical plane by pulling the steel wire rope.

4. A concave-convex surface sliding form method for a large-span sliding form device for a ship lock overflow weir as claimed in claim 1, characterized in that: The following steps are involved: S1. First, select the water-facing or water-receiving side of the ship lock overflow weir for slipform construction, and then install the slipform device according to the top height and the lowest point of the bottom Y direction of the ship lock overflow weir, so that the winch is located above the ship lock overflow weir; S2. The winch releases the wire, and the through-shaft motor drives the threaded rod downward, so that the slipform machine at the bottom of the telescopic swing arm is located at the lowest point of the ship lock overflow weir, and then the slipform machine is used to grout and smoothen the rough surface of the ship lock overflow weir; S3. The winch slowly reels in the wire, and the reeling action of the winch provides the slipform machine and the telescopic swing arm with dragging power that changes the inclination angle and is tangentially parallel to the construction surface; in this process, the through-shaft motor drives the threaded rod to extend and retract to adjust the concave / convex surface radius of the construction surface; S4. After the current YZ plane range slipform construction is completed, the overall slipform device is translated in the X direction until the current construction surface is fully constructed, and then the overall slipform device is installed on the other side of the ship lock overflow weir for slipform construction.

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