Small arched bridge construction equipment and construction method

Abstract

The invention discloses small arch bridge construction equipment and a construction method.The construction equipment comprises a supporting platform and a plurality of sequentially-distributed frame bodies, the side ends of the adjacent frame bodies are rotationally connected, and therefore the multiple frame bodies form an upward-protruding structure; the two frame bodies at the edges are movably connected and are driven to be close to or far away from each other to adapt to the arch bridge height; the high frame body is driven to be close to or away from the supporting platform to adapt to the height of the arch bridge; the other frame bodies are driven by the frame driving piece to rotate, so that the included angle between the adjacent frame bodies is increased or decreased to adapt to different arch bridge shapes; the supporting device is compact in structure and small in occupied space, construction adjustment can be carried out while the prefabricated arch sections are sequentially connected conveniently, the supporting device is suitable for construction of small arch bridges of different shapes, bearing of the prefabricated arch sections is more uniform, the problems of excessive concentration of loads, uneven load distribution or transmission deviation are avoided, and the supporting stability and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of arch bridge construction, and particularly to construction equipment and construction methods for small arch bridges. Background Art

[0002] An arch bridge refers to a bridge with an arch as the main load-bearing member in a vertical plane. Its characteristic lies in that its main load-bearing structure is one or more arch members, and these arch members can effectively transfer the load on the upper part of the bridge to the bridge piers or the bedrock on both banks through the arch feet, thereby achieving good load-bearing capacity and stability.

[0003] According to different building materials, arch bridges can be divided into stone arch bridges, concrete arch bridges, and steel arch bridges; precast concrete arch bridges refer to a form of concrete arch bridge in which the arch ring is divided into multiple arch segments, prefabricated in a factory or prefabrication yard first, and then transported to the construction site for assembly. It has the advantages of fast construction speed, controllable quality and material, and low maintenance cost. For example, the Chinese utility model patent with the publication number CN212688663U: A FRP-reinforced precast masonry arch bridge combined with the self-locking function of arch blocks, and its disclosed technical solution: The combined arch bridge arch ring includes at least two arch ring components, and each arch ring component includes an arch ring main body formed by arranging several special-shaped precast arch blocks in sequence.

[0004] During the construction of precast concrete arch bridges, the docking and assembly of multiple arch segments determine the quality of the arch ring support. Traditional construction methods include: 1. Using lifting components, that is, a crane first lifts one arch segment, then adjusts its position to approach another arch segment, and then performs docking and assembly. This lifting requires a large space, and due to the arc-shaped structure of the arch segment, the adjustment during docking and assembly is relatively complex; 2. Using an arched foundation, that is, at the pre-installation position of the arch bridge, an arched foundation is first laid with materials such as sand and gravel in the same proportion, and then the arch segment is placed on the arched foundation for docking. After the arch ring installation is completed, the arched foundation is then removed. This method is suitable for relatively small arch bridges, and during the construction process, it is difficult to adjust the upper surface of the arched foundation and it is impossible to ensure good support for the arch; 3. Using support components, that is, the height of the column is adjustable, and a support plate is installed at the upper end. By adjusting the height of the column, the support plate supports the arch segment. This method requires continuous adjustment of the height of the column, the operation is cumbersome, and due to the arc-shaped segment of the arch segment and different contact positions with the support plate, it is easy to cause problems such as excessive load concentration, uneven load distribution, or deviation of load transfer, reducing the overall stability and safety of the support components. Summary of the Invention

[0005] The object of the present invention is to provide a construction device for a small arch bridge, which has a compact structure and occupies a small space, can be adjusted during construction while facilitating the sequential connection of precast arch segments, is applicable to the construction of small arch bridges with different shapes, and can more evenly support the precast arch segments, avoiding problems such as excessive load concentration, uneven load distribution, or offset in load transfer, and improving the stability and safety of the overall support.

[0006] To achieve the above object, the construction device for the small arch bridge includes:

[0007] A support platform, installed on a moving component;

[0008] A plurality of sequentially distributed frame bodies, with the side ends of adjacent frame bodies rotatably connected to each other and forming a convex structure;

[0009] Two frame bodies at the edge are movably connected to the support platform and are driven by a first driving member to move closer to or away from each other;

[0010] One frame body at a high position is driven by a second driving member to move closer to or away from the support platform;

[0011] The frame bodies between the high-position frame body and the edge frame bodies are driven to rotate by a frame driving member, so that the included angle between adjacent frame bodies increases or decreases;

[0012] A control component, respectively connected to the first driving member, the second driving member, and the frame driving member, and controlling their corresponding actions.

[0013] In some examples of the present invention, the number of the frame bodies is 2n + 1, where n ≥ 3, and the other frame bodies are symmetrically arranged with respect to the middle high-position frame body;

[0014] The number of frame driving members between the middle frame body and the edge frame bodies is n - 2.

[0015] In some examples of the present invention, the connection rotation points of adjacent frame bodies are located on the outer sides of the frame bodies;

[0016] The outer side length of each frame body is greater than the inner side length, and the cross-section of the frame body is an equilateral trapezoid structure or an equilateral angular structure.

[0017] In some examples of the present invention, an arc-shaped first support plate or a plurality of rod-shaped second support plates circumferentially spaced apart are provided on the outer side of each frame body;

[0018] A plurality of rollers are rotatably installed on both the first support plate and the second support plate.

[0019] In some examples of the present invention, the plurality of rollers are first longitudinally spaced apart and then laterally spaced apart;

[0020] The rollers adjacent to each other in the transverse direction are staggered with each other, and the rollers can be universal wheels.

[0021] In some examples of the present invention, a transfer component is further included, wherein the transfer component has:

[0022] The seat plate is movable on the supporting platform;

[0023] A second slider moves up and down on the seat plate through a lifting assembly;

[0024] The support frame is driven to rotate on the second slider within a certain angle range, and a plurality of support rollers for receiving the prefabricated arch segments are rotatably arranged on the support frame, wherein the upper section of the support rollers is higher than the support frame;

[0025] The push plate is located above the supporting roller and is driven to move along the axis of the supporting roller.

[0026] In some examples of the present invention, the transport component further comprises:

[0027] A pair of positioning plates, each positioning plate is an L-shaped structure, one side of which is movably connected to the lower end of the support frame, and the other side is driven to extend to support and limit the edge of the prefabricated arch segment.

[0028] In some examples of the present invention, the lifting assembly includes: a first sprocket, a second sprocket, and a chain;

[0029] The first sprocket and the second sprocket are rotatably connected to the upper and lower ends of the seat plate;

[0030] One end of the chain is connected to the second slider, and the other end of the chain is wound around the outside of the first sprocket and the second sprocket and then connected to the second slider;

[0031] The second sliding block is connected to the seat plate through a sliding rail, and the first sprocket wheel or the second sprocket wheel is driven to rotate.

[0032] In some examples of the present invention, a third driving member is provided on the second sliding block;

[0033] The third driving member is connected to the rotating shaft of the supporting frame through a gear assembly.

[0034] The present invention also aims to provide a construction method for small arch bridge construction equipment, in which two frame bodies at the edges are close to or away from each other to adapt to the length of the arch bridge, the middle frame body is close to or away from the supporting platform to adapt to the height of the arch bridge, and the angles between some frame bodies are adjusted to adapt to different arch bridge shapes. Therefore, while facilitating the connection of prefabricated arch sections in sequence, construction adjustments can be made, which is suitable for the construction of small arch bridges of different shapes.

[0035] The construction method of the small arch bridge construction equipment specifically comprises the following steps:

[0036] S1, The first driving member is activated to drive the two frame bodies at the edge to approach or move away from each other, so that the two frame bodies at the edge are adapted to the length of the arch bridge; the second driving member is activated to drive the middle frame body to approach or move away from the support platform, so that the middle frame body is adapted to the height of the arch bridge;

[0037] Part of the frame bodies on one side of the middle frame body form a local whole and follow the movement. After the frame bodies at the edge determine the length of the arch bridge and the middle frame body determines the height of the arch bridge, the frame driving member located on the part of the frame bodies is activated to adjust the angle between the frame bodies, and then adjust the "radian" between the frame bodies at the edge and the middle frame body to adapt to different arch bridge shapes;

[0038] S2, The moving member moves the support platform between adjacent bridge piers, and the precast arch segments are arranged in sequence on the outside of the frame bodies to form the main body of the arch ring. During the arrangement of the precast arch segments, some of the frame driving members can be activated to change the local convex structure to adapt to the assembly of the precast arch segments;

[0039] S3, In step S1, the first driving member is activated to drive the two frame bodies at the edge to move away from each other, the second driving member is activated to drive the middle frame body to approach the support platform, and the frame driving member is activated to increase the angle between adjacent frame bodies, so that a plurality of rotatably connected frame bodies form an approximate "flat-laying" structure;

[0040] A plurality of precast arch segments are sequentially placed on the outside of the frame bodies, and the controller coordinately controls the actions of the first driving member, the second driving member, and the frame driving member according to the arch profile, so that the frame bodies at the edge approach each other, the middle frame body gradually moves away from the support platform, and the angle between adjacent frame bodies becomes smaller to adapt to different arch bridge shapes;

[0041] During the change of the plurality of frame bodies, the plurality of precast arch segments can be adaptively connected and adjusted, and the construction workers connect the precast arch segments to form the arch ring during the adjustment process. Finally, the moving member transfers the assembled arch ring to the bridge pier.

[0042] Compared with the prior art, in this small arch bridge construction equipment, a plurality of frame bodies are sequentially rotatably connected. The frame bodies at the edge approach or move away from each other to adapt to the length of the arch bridge, the frame body at a high position approaches or moves away from the support platform to adapt to the height of the arch bridge, and the frame bodies between the frame body at a high position and the frame bodies at the edge are driven to rotate actively to adapt to the arch radian. The overall structure is compact and occupies a small space. It can be adjusted during construction while facilitating the sequential connection of precast arch segments, and is suitable for the construction of small arch bridges of different shapes. Moreover, a plurality of frame bodies are sequentially connected to form a whole, and the precast arch segments are more evenly received, avoiding problems such as excessive load concentration, uneven load distribution, or transfer deviation, and improving the stability and safety of the overall support;

[0043] Since the number of frame bodies is 2n + 1, where n ≥ 3, and the number of frame driving parts on one side of the middle frame body is n - 2, the middle / highest frame body can play a main supporting role for the arch ring. Other frame bodies can be symmetrically arranged with the middle / highest frame body as the center, meeting the requirement of central symmetry of the arch bridge. Moreover, it can reduce the influence on other frame bodies when the frame bodies at the edge and the middle frame body move, avoiding the problems of cumbersome control or local jamming caused by too many frame driving parts, and facilitating the adjustment of the "radian" between the frame bodies at the edge and the middle frame body to adapt to different arch bridge shapes;

[0044] Due to the setting of the transfer component, through the lifting movement of the second slider, the rotation of the support frame body at a certain angle, and the pushing of the precast arch segment by the push plate, the precast arch segment can be transferred onto the frame body, realizing the "loading" of the precast arch segment and avoiding the large space occupied by equipment such as hoisting;

[0045] On the one hand, the construction method of the present invention can move the two frame bodies at the edge closer to or farther from each other to suit the length of the arch bridge, move the middle frame body closer to or farther from the support platform to suit the height of the arch bridge, and adjust the angle between some frame bodies to adapt to different arch bridge shapes, facilitating construction adjustment and being applicable to the construction of small arch bridges with different shapes. On the other hand, the rotatably connected frame bodies form an approximate "flat-laying" structure. Multiple precast arch segments are sequentially placed outside the frame bodies, and during the change process of multiple frame bodies, multiple precast arch segments can be adaptively connected and adjusted, which can reduce the construction procedures and improve the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic diagram of the connection of seven frame bodies in the present invention;

[0047] Figure 2 is a left view of the connection of seven frame bodies in the present invention;

[0048] Figure 3 is a schematic diagram of the connection of adjacent frame bodies in the present invention;

[0049] Figure 4 is a left view of the connection of nine frame bodies in the present invention;

[0050] Figure 5 is a schematic diagram of the first support plate and rollers installed on the frame body in the present invention;

[0051] Figure 6 is a schematic diagram of the second support plate and rollers installed on the frame body in the present invention;

[0052] Figure 7 is a left view of the assembly of the transfer component on the support platform in the present invention;

[0053] Figure 8 isFigure 7 Partial enlarged view of position A;

[0054] Figure 9 Schematic diagram of the assembly of the support frame, support rollers, and push plate in the transfer component of the present invention;

[0055] Figure 10 Simplified diagram of the change and adjustment of the present invention under the connection of seven frame bodies;

[0056] Figure 11 Simplified diagram of the change and adjustment of the present invention under the connection of nine frame bodies;

[0057] Figure 12 A construction simplified diagram when the present invention is in use;

[0058] In the figure: 10, support platform;

[0059] 20, frame body, 21, frame driving member, 22, support seat;

[0060] 31, first driving member, 32, second driving member, 33, first slider;

[0061] 41, first support plate, 42, second support plate, 43, roller;

[0062] 51, seat plate, 52, first sprocket, 53, second sprocket, 54, chain, 55, second slider;

[0063] 61, third driving member, 62, main gear, 63, driven gear, 64, support frame;

[0064] 71, support roller, 72, fourth driving member, 73, push plate, 74, positioning plate;

[0065] 80, precast arch segment. Detailed implementation manners

[0066] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0067] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this invention pertains. The terms "first", "second" and similar terms used in the specification and claims of this patent application for invention do not denote any order, quantity or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not necessarily denote a quantity limitation. Terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0068] As Figures 1 to 4 shown, this small arched bridge construction equipment includes:

[0069] A support platform 10, installed on a moving component;

[0070] A plurality of sequentially distributed frame bodies 20, with the side ends of adjacent frame bodies 20 rotatably connected to each other and enabling the plurality of frame bodies 20 to form a convex structure;

[0071] Two frame bodies 20 at the edge are movably connected to the support platform 10 and are driven by a first driving member 31 to approach or move away from each other;

[0072] One frame body 20 at a high position is driven by a second driving member 32 to approach or move away from the support platform 10;

[0073] The frame bodies 20 between the frame body 20 at the high position and the frame bodies 20 at the edge are driven to rotate by a frame driving member 21;

[0074] A control component, respectively connected to the first driving member 31, the second driving member 32, and the frame driving member 21, and controlling their corresponding actions;

[0075] Specifically, the support platform 10 is an integral flat plate support structure, which can be installed on a moving component. The moving component is a moving carrier, such as a vehicle with a certain load capacity; the support platform 10 can be rotatably installed on the moving component through a slewing bearing, and at this time, the overall angle of the support platform 10 can be controllably adjusted through the slewing bearing;

[0076] The frame body 20 has a certain longitudinal length, which can be consistent with the width of the arch bridge deck. The transverse end sides of the frame body 20 are rotatably connected to each other. For example, support seats 22 are provided on the transverse end sides of the frame body 20, and a support shaft passes through the support seats 22 of adjacent frame bodies 20 to complete the rotational connection; a plurality of frame bodies 20 form a convex structure, and the convex shape can be adjusted;

[0077] The two frame bodies 20 at the edge are movably connected to the support platform 10, that is, the frame bodies 20 can be rotatably installed on the first sliders 33 respectively. The first sliders 33 are connected to the support platform 10 through slide rails. The first driving member 31 can be a double-output cylinder body, and the double outputs are respectively connected to the first sliders 33 on both sides to complete the mutual approach or separation of the two frame bodies 20 at the edge;

[0078] The frame body 20 at the high position is preferably at the highest position. The second driving member 32 can be a single-output cylinder body, and the output end is connected to the frame body 20 at the high position to complete the approach or separation of the frame body 20 from or to the support platform 10;

[0079] The frame driving member 21 can be a single-output cylinder body, with the fixed end movably installed on one frame body 20 and the output end movably installed on another frame body 20 to complete the angular change between adjacent frame bodies 20;

[0080] The control component is the overall control system of this small arch bridge construction equipment, and it can be a hydraulic system for controlling the corresponding actions of the first driving member 31, the second driving member 32, and the frame driving member 21;

[0081] When this small arch bridge construction equipment is in use, the first driving member 31 is started to drive the two frame bodies 20 at the edge to approach or separate from each other, so that the frame bodies 20 at the edge are suitable for the length of the arch bridge; the second driving member 32 is started to drive the frame body 20 at the high position to approach or separate from the support platform 10, so that the middle frame bodies 20 are suitable for the height of the arch bridge; during the start-up process of the first driving member 31 and the second driving member 32, the frame driving member 21 may not act or maintain a certain connection appropriately to avoid the situation of jamming when multiple frame bodies 20 are adjusted;

[0082] When the positions of the frame bodies 20 at the edge and the frame body 20 at the high position are determined, the moving component can move the support platform 10 between adjacent bridge piers. The frame driving member 21 is started to gradually adjust the angle between adjacent frame bodies 20, so that the convex shape of the frame body 20 at the high position and the overall shape at the edge changes to adapt to different arch bridge shapes;

[0083] The precast arch segments 80 are arranged in sequence on the outer side of the frame body 20 to form the main arch ring. During the arrangement process of the precast arch segments 80, some of the frame driving members 21 can be started to change the local convex structure to be suitable for the assembly of the precast arch segments 80;

[0084] In this small arched bridge construction equipment, multiple frame bodies 20 are sequentially rotatably connected. The frame bodies 20 at the edges approach or move away from each other to adapt to the length of the arch bridge, and the frame bodies 20 at a high position approach or move away from the support platform 10 to adapt to the height of the arch bridge. The frame bodies 20 between the frame bodies 20 at a high position and the frame bodies 20 at the edge are driven to rotate actively to adapt to the radian of the arch bridge. The overall structure is compact and occupies a small space. While facilitating the sequential connection of the precast arch segments 80, construction adjustment can be carried out, which is applicable to the construction of small arched bridges with different shapes. Moreover, the multiple frame bodies 20 are sequentially connected to form an integral body, and the precast arch segments 80 are more evenly received, avoiding problems such as excessive load concentration, uneven load distribution, or transmission deviation, and improving the stability and safety of the overall support.

[0085] In some examples of the present invention, such as Figure 1 , Figure 4 , Figure 10 , Figure 11 shown, the number of the frame bodies 20 is 2n + 1, where n ≥ 3, and the other frame bodies 20 are symmetrically arranged with respect to the middle high-position frame body 20;

[0086] The number of the frame driving members 21 between the middle frame body 20 and the frame bodies 20 at the edge is n - 2;

[0087] Specifically, the number of the frame bodies 20 determines the construction effect of this small arched bridge construction equipment, that is, multiple sequentially connected frame bodies 20 form an upward convex structure similar to a polygon. The more the number of the polygons, the more points for receiving the precast arch segments 80, the wider the range of variation and adjustment, and it is applicable to the construction of more small arched bridges with different shapes. At the same time, when varying and adjusting, multiple frame driving members 21 need to be coordinated and deployed;

[0088] Preferably, the frame bodies 20 are detachably connected, and the number of the frame bodies 20 can be adjusted according to the use environment;

[0089] The number of the frame bodies 20 is odd, which can ensure that the frame body 20 in the middle can move to the highest position under the action of the second driving member 32. On the one hand, the frame body 20 in the middle / highest position can play a main supporting effect on the arch ring. On the other hand, the other frame bodies 20 can be symmetrically arranged with respect to the frame body 20 in the middle / highest position, meeting the requirement of the arch bridge being centrosymmetric;

[0090] As an illustration of this example, as Figure 10 shown, the number of the frame bodies 20 is 7, that is, n = 3. The number of the frame driving members 21 on one side of the middle frame body 20 is 1. Defining the frame bodies 20 at the edge to the middle frame body 20 as a, b, c, d, at this time, the frame driving members 21 are installed between the frame bodies a, b, c, d, and are assumed to be installed between the frame bodies b and c;

[0091] The first driving member 31 drives the frame body a at the edge to move, and the second driving member 32 drives the middle frame body d to move. At this time, the frame bodies b and c can be regarded as a local whole. The moving frame body a, the frame bodies b and c, and the moving frame body d form a link structure, which can reduce the influence of the movement of the frame bodies a and d on the frame bodies b and c, and avoid the problems of cumbersome control or local jamming caused by too many frame driving members 21. When the lengths and heights of the arch bridges are shaped by the frame bodies a and d, the frame driving member 21 is started. Since the multiple frame bodies 20 are all rotatably connected, the "radian" between the frame body a and the frame body d is adjusted by adjusting the angle between the frame bodies b and c to adapt to different arch bridge shapes.

[0092] As another illustration of this example, as Figure 11 shown, the number of the frame bodies 20 is 9, that is, n = 4. The number of the frame driving members 21 on one side of the middle frame body 20 is 2. Define the frame bodies 20 at the edge to the middle frame body 20 as a, b,..., e, and define the two frame driving members 21 as α and β, and install them between the frame bodies a, b,..., e. Assume that the frame driving member α is installed between the frame bodies a and b, and the frame driving member β is installed between the frame bodies c and d.

[0093] The first driving member 31 drives the frame body a at the edge to move, and the second driving member 32 drives the middle frame body d to move. The frame driving members a and b, and the frame bodies c and d are regarded as a local whole respectively. Therefore, the frame bodies a and b, the frame bodies c and d, and the frame body e form a link structure, which can reduce the influence of the movement of the frame bodies a and b, and the frame body e on the frame bodies c and d. When the lengths and heights of the arch bridges are shaped by the frame bodies a and b, and the frame body e, the frame driving member α is started, and the "radian" of the frame bodies a, b, c, d, and e is adjusted by adjusting the angle between the frame bodies a and b. Or the frame driving member β is started, and the "radian" of the frame bodies a, b, c, d, and e is adjusted by adjusting the angle between the frame bodies c and d. Or the frame driving members α and β are both started in due time, and the "radian" from the frame body a to e is adjusted by adjusting the angles between the frame bodies a and b, and between the frame bodies c and d to adapt to different arch bridge shapes.

[0094] In some examples of the present invention, as Figure 3 shown, the connecting rotation points of adjacent frame bodies 20 are located outside the frame bodies 20.

[0095] The outer side length of each frame body 20 is greater than the inner side length.

[0096] The cross-section of the frame body 20 is an equilateral trapezoid structure or an equilateral angular structure.

[0097] Specifically, the rotation point is located on the outer side, and the outer side length is greater than the inner side length, so that the adjacent frame bodies 20 can have a certain angular rotation space, which can be applied to arch bridges with a larger arc. For example, the cross-section of the frame body 20 is an equilateral trapezoid or an equilateral triangle;

[0098] In addition, it should be noted that the rotation point can avoid contact with the precast arch segment 80;

[0099] As Figure 12 shown, before the small arch bridge construction equipment is used, the frame driving member 21 extends to make the angle between the adjacent frame bodies 20 larger or maximum, the second driving member 32 retracts to move the middle frame body 20 to the lowest position, and the first driving member 31 extends to make the frame bodies 20 at the edges move away from each other. At this time, after the multiple frame bodies 20 are rotatably connected, an approximate "flat-laid" structure is formed. Then, multiple precast arch segments 80 are sequentially placed outside the frame bodies 20. The controller coordinately controls the first driving member 31 to retract, the second driving member 32 to extend, and the frame driving member 21 to retract according to the arch profile. The frame bodies 20 at the edges approach each other, the middle frame body 20 gradually rises, and the angle between the adjacent frame bodies 20 becomes smaller. During the deformation process of the small arch bridge construction equipment, the multiple precast arch segments 80 can be adaptively connected and adjusted, or the construction workers connect the precast arch segments 80 to form an arch ring during the adjustment process of the precast arch segments 80. Therefore, the handling of the precast arch segments 80 by the construction workers is greatly reduced, and finally the moving components transfer the assembled arch ring to the bridge pier;

[0100] It should be noted that before the small arch bridge construction equipment is deformed and adjusted, a limiting plate can be arranged on the frame body 20 at the edge. The limiting plate is used for positioning and supporting the precast arch segment 80 to prevent the frame body 20 at the edge from tipping over or slipping.

[0101] In some examples of the present invention, as Figure 5 、 Figure 6 shown, an arc-shaped first support plate 41 or a plurality of rod-shaped second support plates 42 distributed at circumferential intervals are arranged on the outside of each frame body 20;

[0102] A plurality of rollers 43 are rotatably installed on both the first support plate 41 and the second support plate 42;

[0103] Specifically, the first support plate 41 is laid on the outside of the frame body 20 and is an arc-shaped structure as a whole; or the second support plates 42 are longitudinally arranged and are distributed at a plurality of transverse intervals on the frame body 20;

[0104] The plurality of rollers 43 are used for rolling support of the precast arch segment 80 to facilitate the position adjustment of the precast arch segment 80;

[0105] In some examples of the present invention, as Figure 5 、 Figure 6As shown, multiple rollers 43 are first longitudinally spaced apart and then transversely spaced apart;

[0106] The transversely adjacent rollers 43 are staggered from each other;

[0107] The rollers 43 can be universal wheels;

[0108] Specifically, multiple rollers 43 are installed on the first support plate 41 or the second support plate 42 through ear seats, and are staggered from each other as much as possible in distribution, especially transversely, to prevent the precast arch segment 80 from getting stuck when moving on multiple frame members due to no support points;

[0109] In some examples of the present invention, as Figure 7 、 Figure 8 、 Figure 9 shown, the small arched bridge construction equipment further includes a transfer component;

[0110] The transfer component has:

[0111] A seat plate 51 that moves actively on the support platform 10;

[0112] A second slider 55 that moves up and down on the seat plate 51 through a lifting component;

[0113] A support frame 64 that is driven to rotate within a certain angle range on the second slider 55, and a plurality of support rollers 71 for receiving the precast arch segment 80 are rotatably provided thereon. Among them, the upper tangent plane of the support roller 71 is higher than the support frame 64;

[0114] A push plate 73 is located above the support roller 71 and is driven to move along the axis of the support roller 71;

[0115] Specifically, the transfer component is used to transfer the precast arch segment 80 onto the frame body 20;

[0116] The seat plate 51 can be a mobile cart that can move on the support platform 10. The seat plate 51 has a vertical plate with a certain height, so that the second slider 55 can move through the lifting component, and the height of the vertical plate is slightly greater than that of the frame body 20 at the highest position. For example, the seat plate 51 is of an L-shaped structure, with universal wheels for movement provided at the lower part and a slide rail for facilitating the sliding of the second slider 55 provided at the upper part;

[0117] The support frame 64 is installed on the second slider 55 and can rotate within a certain angle range. The purpose is to facilitate the transition of the precast arch segment 80 with an arc-shaped structure onto the support frame 64 and be received by the support rollers 71;

[0118] The push plate 73 can be connected to a fourth driving member 72 for movement;

[0119] When this example is in use, the seat plate 51 moves to the edge of the support platform 10. Under the action of the lifting assembly, the second slider 55 moves to the lowest position, and the support frame 64 rotates as the second slider 55 rotates to tilt as a whole, that is, one end of the support frame 64 facing the edge of the support platform 10 is lower. The precast arch segment 80 is transferred onto the support frame 64 and is received by the support rollers 71.

[0120] During the process of the support rollers 71 receiving the precast arch segment 80, the support frame 64 gradually straightens up. Then the seat plate 51 moves closer to the position of the precast arch segment 80 to be assembled. Under the action of the lifting assembly, the second slider 55 moves to the high position, that is, slightly higher than the outside of the frame body 20. Then the push plate 73 pushes the precast arch segment 80 onto the frame body 20. Then the push plate 73 returns to its original position, and the second slider 55 moves to the lowest position to wait for the construction and assembly of the next precast arch segment 80. Through the lifting movement of the second slider 55, the support frame 64 rotates at a certain angle, and the push plate 73 pushes the precast arch segment 80, this example can transfer the precast arch segment 80 onto the frame body 20, realizing the "loading" of the precast arch segment 80, and avoiding the large space occupied by using equipment such as hoisting.

[0121] In some examples of the present invention, as Figure 9 shown, the transfer component further includes:

[0122] A pair of positioning plates 74. Each positioning plate 74 has an L-shaped structure. One side is movably connected to the lower end of the support frame 64, and the other side is driven to extend to support and limit the edge of the precast arch segment 80.

[0123] Specifically, one end of the positioning plate 74 is rotatable on the support frame 64, and a cylinder is connected to the middle. That is, when the cylinder is started, it drives the other side of the positioning plate 74 to flip so that its other end moves upward.

[0124] Or one end of the positioning plate 74 is slidably connected to the support frame 64 and is driven to slide by a cylinder. That is, when the cylinder is started, it drives the other side of the positioning plate 74 to move to support and limit the edge of the precast arch segment 80.

[0125] When this example is in use, after the support rollers 71 receive the precast arch segment 80, the positioning plate 74 is driven to flip or move out, which can support and limit the edge of the precast arch segment 80. At this time, the support frame 64 rotates to match the tilt of the frame body 20, avoiding the precast arch segment 80 from slipping off the support rollers 71 and reducing the damage caused by the height difference when the precast arch segment 80 is transferred onto the frame body 20.

[0126] In some examples of the present invention, as Figure 7 shown, the lifting assembly includes: a first sprocket 52, a second sprocket 53, and a chain 54.

[0127] The first sprocket wheel 52 and the second sprocket wheel 53 are respectively rotatably connected to the upper and lower ends of the seat plate 51;

[0128] One end of the chain 54 is connected to the second slider 55, and the other end is wound around the outer sides of the first sprocket wheel 52 and the second sprocket wheel 53 and then connected to the second slider 55;

[0129] Wherein, the second slider 55 is connected to the seat plate 51 through a slide rail, and the first sprocket wheel 52 or the second sprocket wheel 53 is driven to rotate;

[0130] Specifically, the first sprocket wheel 52 and the second sprocket wheel 53 are distributed up and down, and one of them is driven to rotate. For example, the first sprocket wheel 52 or the second sprocket wheel 53 is respectively connected to the motor;

[0131] After the motor is started, it drives the first sprocket wheel 52 or the second sprocket wheel 53 to rotate, and the chain 54 wound around its outer side can quickly rotate correspondingly, thereby driving the second slider 55 to move up and down on the seat plate 51.

[0132] In some examples of the present invention, as Figure 8 shown, a third driving member 61 is provided on the second slider 55;

[0133] The third driving member 61 is connected to the rotating shaft of the support frame 64 through a gear assembly;

[0134] Specifically, the gear assembly can be a main gear 62 and a driven gear 63, that is, the third driving member 61 is connected to the main gear 62, the driven gear 63 is connected to the support shaft where the support frame 64 is located, and the main gear 62 is meshed and connected to the driven gear 63;

[0135] The third driving member 61 can be a servo motor. After it is started, the main gear 62 drives the driven gear 63 to make the support frame 64 rotate within a certain angle range. It should be noted that the gear assembly can be provided with a self-locking structure during transmission, such as adopting a worm and worm gear structure, etc.

[0136] When this small arched bridge construction equipment is in use, as Figure 4 、 Figures 10 to 12 shown, it specifically includes the following steps:

[0137] S1, the first driving member 31 is started to drive the two frame bodies 20 at the edge to approach or move away from each other, so that the frame bodies 20 at the edge are adapted to the length of the arch bridge; the second driving member 32 is started to drive the middle frame body 20 to approach or move away from the support platform 10, so that the middle frame body 20 is adapted to the height of the arch bridge;

[0138] A part of the frame body 20 on one side of the middle frame body 20 forms a local whole and moves accordingly. After the frame body 20 at the edge shapes the length of the arch bridge and the middle frame body 20 shapes the height of the arch bridge, the frame driving member 21 on the part of the frame body 20 is activated to adjust the angle between the frame bodies 20, thereby adjusting the "radian" between the frame body 20 at the edge and the middle frame body 20 to adapt to different arch bridge shapes;

[0139] S2. The moving member moves the support platform 10 between adjacent bridge piers, and the precast arch segments 80 are sequentially arranged on the outer side of the frame body 20 to form the main arch ring. During the arrangement of the precast arch segments 80, some of the frame driving members 21 can be activated to change the local convex structure to suit the assembly of the precast arch segments 80;

[0140] S3. In step S1, the first driving member 31 is activated to drive the two frame bodies 20 at the edge away from each other, the second driving member 32 is activated to drive the middle frame body 20 closer to the support platform 10, and the frame driving member 21 is activated to drive the angle between the adjacent frame bodies 20 to become larger, so that the multiple rotatably connected frame bodies 20 form an approximate "flat-laid" structure;

[0141] The multiple precast arch segments 80 are sequentially placed on the outer side of the frame body 20, and the controller coordinately controls the actions of the first driving member 31, the second driving member 32, and the frame driving member 21 according to the arch profile, so that the frame bodies 20 at the edge approach each other, the middle frame body 20 gradually moves away from the support platform 10, and the angle between the adjacent frame bodies 20 becomes smaller to adapt to different arch bridge shapes;

[0142] During the change of the multiple frame bodies 20, the multiple precast arch segments 80 can be adaptively connected and adjusted, and the construction workers connect the precast arch segments 80 to form an arch ring during the adjustment process. Finally, the moving member transfers the assembled arch ring to the bridge pier.

[0143] The exemplary embodiments of the small arch bridge construction equipment proposed by the present invention are described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that without departing from the concept of the present invention, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present invention can be made without exceeding the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. Small arch bridge construction equipment, characterized in that: include: A supporting platform (10) mounted on the moving part; A plurality of frame bodies (20) distributed in sequence, the side ends of adjacent frame bodies (20) being rotatably connected to each other, so that the plurality of frame bodies (20) form an upward convex structure; The two frame bodies (20) at the edge are movably connected to the support platform (10) and driven to move closer to or farther from each other by a first driving member (31); A frame body (20) at a high position is driven to approach or move away from a support platform (10) by a second driving member (32); The frame body (20) between the frame body (20) at the upper position and the frame body (20) at the edge is driven to rotate by a frame driving member (21), so that the angle between adjacent frame bodies (20) increases or decreases; The control component is respectively connected to the first driving member (31), the second driving member (32), and the frame driving member (21), and controls their corresponding actions.

2. The small arch bridge construction equipment according to claim 1, characterized in that: The number of the frame bodies (20) is 2n+1, where n≥3, and the other frame bodies (20) are arranged symmetrically with respect to the middle high frame body (20); The number of frame driving members (21) between the middle frame body (20) and the frame body (20) at the edge is n-2.

3. The small arch bridge construction equipment according to claim 2, characterized in that: The connection rotation point of adjacent frame bodies (20) is located outside the frame body (20); The outer side length of each frame body (20) is greater than the inner side length, and the cross section of the frame body (20) is an equilateral trapezoidal structure or an equilateral angle structure.

4. The small arch bridge construction equipment according to any one of claims 1 to 3, characterized in that: Each frame body (20) is provided with a first support plate (41) of an arc-shaped structure or a plurality of second support plates (42) of a rod-shaped structure distributed at intervals in the circumferential direction on the outside; A plurality of rollers (43) are rotatably mounted on both the first supporting plate (41) and the second supporting plate (42).

5. The small arch bridge construction equipment according to claim 4, characterized in that: The plurality of rollers (43) are first distributed longitudinally and then distributed transversely; The rollers (43) adjacent to each other in the transverse direction are staggered, and the rollers (43) can be universal wheels.

6. The small arch bridge construction equipment according to any one of claims 1 to 3, characterized in that: Also included is a transfer component, the transfer component having: A seat plate (51) is movable on the supporting platform (10); A second sliding block (55) is moved up and down on the seat plate (51) by a lifting assembly; The support frame (64) is driven to rotate on the second slider (55) within a certain angle range, and a plurality of support rollers (71) for receiving the prefabricated arch segments (80) are rotatably arranged on the support frame (64), wherein the upper section of the support rollers (71) is higher than that of the support frame (64); The push plate (73) is located above the supporting roller (71) and is driven to move along the axis of the supporting roller (71).

7. The small arch bridge construction equipment according to claim 6, characterized in that: The transfer component also includes: A pair of positioning plates (74), each positioning plate (74) is an L-shaped structure, one side of which is movably connected to the lower end of the support frame (64), and the other side of which is driven to extend out to support and limit the edge of the prefabricated arch section (80).

8. The small arch bridge construction equipment according to claim 6, characterized in that: The lifting assembly comprises: a first sprocket (52), a second sprocket (53), and a chain (54); The first sprocket (52) and the second sprocket (53) are rotatably connected to the upper and lower ends of the seat plate (51); One end of the chain (54) is connected to the second slider (55), and the other end is wound around the outside of the first sprocket (52) and the second sprocket (53) and then connected to the second slider (55); The second sliding block (55) is connected to the seat plate (51) via a slide rail, and the first sprocket wheel (52) or the second sprocket wheel (53) is driven to rotate.

9. The small arch bridge construction equipment according to claim 6, characterized in that: The second sliding block (55) is provided with a third driving member (61); The third driving member (61) is connected to the rotating shaft of the supporting frame (64) via a gear assembly.

10. A construction method for the small arch bridge construction equipment according to claim 3, characterized in that: The specific steps include: S1, the first driving member (31) is started, driving the two frame bodies (20) at the edge to move closer to or farther from each other, so that the two frame bodies (20) at the edge are adapted to the length of the arch bridge; the second driving member (32) is started, driving the middle frame body (20) to move closer to or farther from the supporting platform (10), so that the middle frame body (20) is adapted to the height of the arch bridge; The partial frame body (20) on one side of the middle frame body (20) forms a partial whole and follows the action. When the edge frame body (20) is finalized for the length of the arch bridge and the middle frame body (20) is finalized for the height of the arch bridge, the frame driving member (21) located on the partial frame body (20) is started to adjust the angle between the frame bodies (20) and further adjust the "arc" between the edge frame body (20) and the middle frame body (20) to adapt to different arch bridge shapes. S2, the moving component moves the supporting platform (10) to between adjacent bridge piers, and the prefabricated arch segments (80) are sequentially arranged and placed on the outside of the frame body (20) to form an arch ring body. During the arrangement of the prefabricated arch segments (80), some of the frame driving components (21) can be activated to change the local protruding structure to be suitable for the assembly of the prefabricated arch segments (80); S3, in step S1, the first driving member (31) is started, driving the two frame bodies (20) at the edge to move away, the second driving member (32) is started, driving the middle frame body (20) to approach the support platform (10), and the frame driving member (21) is started, driving the angle between adjacent frame bodies (20) to increase, so that the multiple rotatably connected frame bodies (20) form a nearly "flat" structure; A plurality of prefabricated arch segments (80) are sequentially placed outside the frame body (20), and a controller coordinates and controls the actions of the first driving member (31), the second driving member (32), and the frame driving member (21) according to the arch profile, so that the frame bodies (20) at the edges are close to each other, the middle frame bodies (20) gradually move away from the support platform (10), and the angles of adjacent frame bodies (20) become smaller, so as to adapt to different arch bridge shapes; During the change process of the multiple frame bodies (20), the multiple prefabricated arch segments (80) can be adaptively connected and adjusted, and the construction personnel connect the prefabricated arch segments (80) to each other to form an arch ring during the adjustment process, and finally the mobile parts transfer the assembled arch ring to the bridge pier.

Images