A butt joint installation device for hoisting and positioning of continuous steel box girders

Abstract

The present invention discloses a butt joint installation device for hoisting and positioning of a continuous steel box girder, comprising: a stabilizing mechanism arranged below the hoisting frame body and a guiding and detecting mechanism arranged on both sides of the support. A cushion block for supporting the steel box girder is arranged on the support. After a hook arranged on the hoisting frame body is connected to a lifting lug arranged on the top surface of the steel box girder, the stabilizing mechanism elastically abuts against the top surface of the steel box girder. After the steel box girder is positioned and hoisted above the support to a first preset height, the steel box girder is further lowered to a second preset height, and it is detected whether the steel box girder contacts the guiding and detecting mechanism before being lowered to the second preset height. If so, the position of the steel box girder is adjusted. If not, the guiding and detecting mechanism guides the further lowering of the steel box girder. The stabilizing mechanism can improve the stability and safety of the hoisting of the steel box girder, and the guiding and detecting mechanism can detect and guide the lowering of the steel box girder before the steel box girder contacts the cushion block, ensuring the accuracy of the installation position of the steel box girder.

Description

Technical Field

[0001] The present invention relates to the technical field of the installation of steel box girders, and more specifically, the present invention relates to a butt joint installation device for hoisting and positioning continuous steel box girders. Background Art

[0002] A steel box girder, also called a steel plate box girder, is a common structural form for long-span bridges. It is generally used in bridges with larger spans and is called a steel box girder because its appearance resembles a box. A steel box girder is generally formed by connecting a top plate, a bottom plate, webs, diaphragms, longitudinal diaphragms, and stiffening ribs through full welding. The top plate is an orthotropic bridge deck composed of a cover plate and longitudinal stiffening ribs.

[0003] When installing a steel box girder, the steel box girder is hoisted by a hoisting method. During the hoisting process, affected by wind force, the steel box girder is prone to swing, which increases the installation error of the steel box girder, affects the installation accuracy of the steel box girder, and also affects the stability and safety of hoisting. Therefore, it is necessary to propose a butt joint installation device for hoisting and positioning continuous steel box girders to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a butt joint installation device for hoisting and positioning continuous steel box girders, including: a stabilizing mechanism arranged below the hoisting frame body and a guiding and detecting mechanism arranged on both sides of the support. A cushion block for supporting the steel box girder is arranged on the support; after a hook arranged on the hoisting frame body is connected to a lifting lug arranged on the top surface of the steel box girder, the stabilizing mechanism elastically abuts against the top surface of the steel box girder; after the steel box girder is positioned and hoisted to a first preset height above the support, the steel box girder continues to move down to a second preset height, and it is detected whether the steel box girder contacts the guiding and detecting mechanism before moving down to the second preset height. If so, the position of the steel box girder is adjusted. If not, the guiding and detecting mechanism guides the continuous downward movement of the steel box girder.

[0006] Preferably, the stabilizing mechanism includes: a plate body in contact with the top surface of the steel box girder and a rotating assembly arranged below the hoisting frame body. The plate body and the rotating assembly are connected through an elastic assembly.

[0007] Preferably, the elastic component includes: a sleeve connected to the bottom end of the rotating component. A movable block is slidably connected inside the sleeve. One end of the movable block extending out of the bottom of the sleeve is connected to a plate body. A first spring is connected between the movable block and the top of the sleeve.

[0008] Preferably, a movable ring is slidably sleeved outside the sleeve. The movable ring is connected to the movable block through a fixing member. The sleeve is provided with a first chute for the fixing member to pass through. The first chute extends along the axial direction of the sleeve. A driving ring is slidably sleeved outside the sleeve. The driving ring is arranged below the movable ring. A driving part is arranged outside the sleeve. The output end of the driving part is connected with a screw rod. The screw rod is in threaded connection with the driving ring.

[0009] Preferably, the guiding and detecting mechanism includes: a fixing frame arranged on the bracket. A first supporting rod is rotatably arranged on the fixing frame. When the first supporting rod rotates downward to the first limit position, a set angle is formed between the first supporting rod and the horizontal plane. An elastic telescopic member is connected between the first supporting rod and the fixing frame. One end of the first supporting rod far from the fixing frame is hinged with a second supporting rod. A guiding plate is arranged at the end of the second supporting rod far from the first supporting rod. The guiding plate and the first supporting rod are connected through an elastic limiting member. When the included angle between the second supporting rod and the first supporting rod is 180 degrees, the guiding plate is located at the second limit position.

[0010] Wherein, the first limit position means that the downward rotation of the first supporting rod is restricted. The second limit position means that the upward rotation of the bottom end of the guiding plate is restricted.

[0011] Preferably, the fixing frame is provided with an arc-shaped groove. A limiting block capable of sliding in the arc-shaped groove is sleeved outside the first supporting rod.

[0012] Preferably, detection parts are respectively arranged on both sides of the limiting block in the extending direction of the arc-shaped groove.

[0013] Preferably, the elastic telescopic member is a third spring. One end of the third spring is connected with the first supporting rod, and the other end is connected with the fixing frame. A second pressure sensor is arranged at the connection part of the first supporting rod and the third spring.

[0014] Preferably, the elastic telescopic member is a pneumatic telescopic member.

[0015] The pneumatic telescopic member includes: a cylinder body and a movable rod slidably arranged inside the cylinder body. One end of the cylinder body is rotatably connected to the fixing frame. A plug body is arranged at the end of the movable rod located inside the cylinder body. A cavity is formed between the plug body and the closed end of the cylinder body. The end of the movable rod extending outside the cylinder body is slidably connected to the first supporting rod.

[0016] Preferably, the elastic limiting member includes: an arc-shaped limiting rod and an arc-shaped limiting portion provided on the first support rod. One end of the arc-shaped limiting rod is connected to the guiding plate, and the other end is slidably disposed in the arc-shaped limiting portion through a fourth spring. The centers of the arc-shaped limiting rod and the arc-shaped limiting portion are both located on the rotation center of the first support rod and the second support rod.

[0017] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0018] The butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention can improve the stability and safety of steel box girder hoisting through the stabilizing mechanism, and reduce the influence of wind force on the swing of the steel box girder; through the guiding and detecting mechanism, the downward movement of the steel box girder can be detected and guided before the steel box girder contacts the cushion block, ensuring the accuracy of the installation position of the steel box girder. Moreover, during the downward movement process, with the cooperation of the stabilizing mechanism, the swing of the steel box girder can be reduced, further improving the installation accuracy.

[0019] For the butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention, other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 It is a schematic structural diagram of the steel box girder installed on the support;

[0022] Figure 2 It is a schematic structural diagram of the butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention;

[0023] Figure 3 It is a schematic structural diagram of the stabilizing mechanism in the butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention;

[0024] Figure 4 It is a schematic internal structural diagram of the stabilizing mechanism in the butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention;

[0025] Figure 5 It is a schematic structural diagram of the guiding and detecting mechanism when the elastic telescopic member in the butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention is a third spring;

[0026] Figure 6 It is a schematic structural diagram of the fixing frame in the butt joint installation device for continuous steel box girder hoisting and positioning according to the present invention;

[0027] Figure 7 Schematic diagram of the internal structure of the limit block in the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention;

[0028] Figure 8 Schematic diagram of the structure of the guiding and detecting mechanism when the elastic telescopic member in the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention is a pneumatic telescopic member;

[0029] Figure 9 Schematic diagram of the structure of the elastic limit member in the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention;

[0030] Figure 10 Schematic diagram of the structure of the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention when it contacts the guiding and detecting mechanism before the steel box girder moves to the second preset height;

[0031] Figure 11 Schematic diagram of the structure of the guiding and detecting mechanism in the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention when it contacts the guiding and detecting mechanism before the steel box girder moves to the second preset height;

[0032] Figure 12 Schematic diagram of the structure of the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention when guiding the continuous downward movement of the steel box girder through the guiding and detecting mechanism;

[0033] Figure 13 Schematic diagram of the structure of the guiding and detecting mechanism in the butt joint installation device for hoisting and positioning of continuous steel box girders according to the present invention when guiding the continuous downward movement of the steel box girder through the guiding and detecting mechanism. Detailed implementation manners

[0034] The following further describes the present invention in detail with reference to the drawings and embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0035] It should be understood that the terms such as "having", "including" and "comprising" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0036] Such as Figure 2As shown in the figure, the present invention provides a butt joint installation device for hoisting and positioning of continuous steel box girders, including: a stabilizing mechanism 1 arranged below the hoisting frame body 3 and a guiding and detecting mechanism 2 arranged on both sides of the support 4. A cushion block 6 for supporting the steel box girder 5 is arranged on the support 4; after the hook arranged on the hoisting frame body 3 is connected to the lifting lug arranged on the top surface of the steel box girder 5, the stabilizing mechanism 1 elastically abuts against the top surface of the steel box girder 5; after the steel box girder 5 is positioned and hoisted above the support 4 to a first preset height, the steel box girder 5 continues to move down to a second preset height, and it is detected whether the steel box girder 5 contacts the guiding and detecting mechanism 2 before moving down to the second preset height. If so, the position of the steel box girder 5 is adjusted. If not, the guiding and detecting mechanism 2 guides the steel box girder 5 to continue moving down.

[0037] As Figure 1 shown in the figure is a schematic diagram of hoisting the steel box girder 5 onto the support 4, and the bottom of the steel box girder 5 contacts the cushion block 6;

[0038] During hoisting, first connect the hook on the hoisting frame body 3 with the lifting lug on the steel box girder 5, and then make the stabilizing mechanism 1 elastically abut against the top surface of the steel box girder 5, so that the connection between the hook and the lifting lug is more stable, and the relative swing between the steel box girder 5 and the hoisting frame body 3 is prevented, ensuring the safety and stability of hoisting;

[0039] When the steel box girder 5 is hoisted and positioned and moved above the support 4, first move to the first preset height, that is, the bottom of the steel box girder 5 does not contact the highest point of the guiding and detecting mechanism 2; then, move the steel box girder 5 down to the second preset height, and the second preset height is just contacting the guiding and detecting mechanism 2. If during this downward movement, the bottom of the steel box girder 5 contacts the guiding and detecting mechanism 2, it indicates that the position of the steel box girder 5 is offset, that is, as Figure 10 shown in the figure, in this case, the position of the steel box girder 5 should be adjusted and then moved down to the second preset height again. As Figure 2 shown in the figure, at the second preset height, both sides of the bottom of the steel box girder 5 contact the guiding and detecting mechanisms 2 on both sides of the support 4. At this time, it can continue to move down, and the guiding and detecting mechanism 2 plays a guiding role for the steel box girder 5, enabling the steel box girder 5 to move vertically down to the designated position and preventing the position where it is hoisted onto the support 4 from shifting.

[0040] Through the above design, the stabilizing mechanism 1 can improve the stability and safety of the hoisting of the steel box girder 5 and reduce the influence of wind force on the swing of the steel box girder 5; through the guiding and detecting mechanism 2, it can detect and guide the downward movement of the steel box girder 5 before the steel box girder 5 contacts the cushion block 6, ensuring the accuracy of the installation position of the steel box girder 5. And during the downward movement, with the cooperation of the stabilizing mechanism 1, the swing of the steel box girder 5 can be reduced, further improving the installation accuracy.

[0041] As Figure 3 andFigure 4 As shown, further, the stabilizing mechanism 1 includes: a plate body 110 in contact with the top surface of the steel box girder 5, and a rotating assembly 120 disposed below the hoisting frame body 3. The plate body 110 and the rotating assembly 120 are connected by an elastic assembly 130.

[0042] The rotating assembly 120 can adopt a universal shaft and can rotate in multiple directions, so that the plate body 110 can always be in contact with the top surface of the steel box girder 5 to ensure the hoisting stability. For example, if the top surface of the steel box girder 5 is an inclined surface, the plate body 110 can adaptively adjust the angle through the rotating assembly 120 to keep in contact with the top surface of the steel box girder 5.

[0043] The elastic assembly 130 is used to elastically abut the plate body 110 against the steel box girder 5, which can offset part of the vibration, thereby reducing the swing of the steel box girder 5.

[0044] Further, the elastic assembly 130 includes: a sleeve 131 connected to the bottom end of the rotating assembly 120. An active block 132 is slidably connected in the sleeve 131. One end of the active block 132 extending out of the bottom of the sleeve 131 is connected to the plate body 110. A first spring 133 is connected between the active block 132 and the top of the sleeve 131.

[0045] Further, a moving ring 134 is slidably sleeved on the outer side of the sleeve 131. The moving ring 134 and the active block 132 are connected by a fixing member, and the fixing member can adopt a screw. The sleeve 131 is provided with a first sliding groove 135 for the fixing member to pass through, and the first sliding groove 135 extends along the axial direction of the sleeve 131. A driving ring 136 is slidably sleeved on the outer side of the sleeve 131. The driving ring 136 is disposed below the moving ring 134. A driving portion 137 is provided on the outer side of the sleeve 131. The output end of the driving portion 137 is connected to a screw 138, and the screw 138 is threadedly connected to the driving ring 136.

[0046] The driving ring 136 is in limit sliding connection with the sleeve 131. Protrusions can be provided on the inner ring surface of the driving ring 136, and a long groove extending in the circumferential direction is provided on the outer surface of the sleeve 131, so that the driving ring 136 can only slide up and down along the outer side of the sleeve 131.

[0047] To prevent the height of the elastic component 130 from affecting the connection between the hoisting main body 3 and the steel box girder 5, before connection, the driving part 137 can be operated to drive the screw 138 to rotate, causing the driving ring 136 threadedly connected to the screw 138 to move upward, driving the moving ring 134 to move, and thus causing the movable block 132 connected to the moving ring 134 to move upward. Then the first spring 133 is compressed. In this way, the overall height of the elastic component 130 is reduced, facilitating the connection between the hoisting main body 3 and the steel box girder 5. After the two are connected, the driving part 137 is driven to drive the screw 138 to rotate in the reverse direction, causing the driving ring 136 to move downward. Then, under the elastic restoring force of the first spring 133, the moving ring 134, the movable block 132 and the plate body 110 are pushed downward to achieve elastic abutment with the steel box girder 5.

[0048] In addition, a third pressure sensor can be provided at the bottom of the plate body 110 to detect the elastic abutting force between the plate body 110 and the steel box girder 5. For example, a preset pressure value can be set. Under the preset pressure value, it can be ensured that the elastic component 130 plays a stable role in hoisting the steel box girder 5, and moreover, to prevent the elastic abutting force from being too large, resulting in a large tension between the hook and the lug and causing damage. Therefore, the detected elastic abutting force between the plate body 110 and the steel box girder 5 should be less than the preset pressure value.

[0049] The position of the driving ring 136 can be adjusted by driving the screw 138 to rotate by the driving part 137, so that the driving ring 136 generates a supporting force on the moving ring 134, thereby reducing the elastic abutting force between the detected plate body 110 and the steel box girder 5.

[0050] For example, after the plate body 110 abuts against the steel box girder 5, if the pressure value detected by the third pressure sensor is less than the preset pressure value when the driving ring 136 and the moving ring 134 are not in contact, then the moving ring 134 does not require the supporting force of the driving ring 136. If the pressure value detected by the third pressure sensor is greater than the preset pressure value when the driving ring 136 and the moving ring 134 are not in contact, then the driving ring 136 needs to be moved upward to generate a supporting force on the moving ring 134, so that the detected pressure value is less than or equal to the preset pressure value.

[0051] Through the above design, it is possible to prevent the height of the elastic component 130 from affecting the connection between the hoisting main body 3 and the steel box girder 5, ensure the stable abutment between the detected plate body 110 and the steel box girder 5, and improve the stability of the hoisting of the steel box girder 5.

[0052] Such as Figures 5 - 9As shown, in one embodiment, the guiding and detecting mechanism 2 includes: a fixing frame 210 provided on a bracket 4. A first rod 220 is rotatably provided on the fixing frame 210. When the first rod 220 rotates downward to a first limit position, a set angle is formed between the first rod 220 and the horizontal plane. An elastic telescopic member is connected between the first rod 220 and the fixing frame 210. One end of the first rod 220 away from the fixing frame 210 is hinged to a second rod 240. A guiding plate 250 is provided at the end of the second rod 240 away from the first rod 220. The guiding plate 250 and the first rod 220 are connected by an elastic limiting member 260. When the included angle between the second rod 240 and the first rod 220 is 180 degrees, the guiding plate 250 is located at a second limit position.

[0053] Wherein, the first limit position means that the downward rotation of the first rod 220 is restricted, and the second limit position means that the upward rotation of the bottom end of the guiding plate 250 is restricted.

[0054] A plurality of rolling balls 251 are provided on the surface of the guiding plate 250 away from the second rod 240.

[0055] When the steel box girder 5 moves to a second preset height, the two sides thereof contact with the part below the middle of the guiding plate 250 to ensure that the guiding plate 250 can rotate.

[0056] The initial state of the guiding and detecting mechanism 2 is Figure 5 the state shown. The downward movement of the first rod 220 is restricted, the upward rotation of the bottom end of the guiding plate 250 is restricted. The position of the first rod 220 is determined by the elastic telescopic member, and the position of the guiding plate 250 is determined by the elastic limiting member 260.

[0057] When the steel box girder 5 does not shift during the downward movement, that is, as Figure 2 shown, when the steel box girder 5 moves down to the second preset height, its two sides respectively contact with the guiding plates 250 located on both sides. Then when the steel box girder 5 continues to move down, a force will be formed on the guiding plate 250, causing it to rotate, that is, the bottom end of the guiding plate 250 rotates downward, making the elastic limiting member 260 in a compressed state. At the same time, the first rod 220 will also adaptively rotate upward. Eventually, the rolling balls 251 on the guiding plate 250 will elastically abut against the side surface of the steel box girder 5, that is, as Figure 12 and Figure 13 shown. At this time, when the steel box girder 5 continues to move down, its two sides can receive the elastic abutting force of the guiding and detecting mechanism 2, thereby preventing the steel box girder 5 from continuing to shift, ensuring the installation accuracy. And under the action of the plurality of rolling balls 251, the steel box girder 5 can move down smoothly, reducing the friction between the two.

[0058] The fixing bracket 210 is detachably connected to the support 4, or a lifting platform can be further provided at the bottom of the fixing bracket 210, and the lifting platform is detachably connected to the support 4. The lifting platform is used to adjust the height of the guiding and detecting mechanisms 2 on both sides when the bottom surface of the steel box girder 5 is inclined, so that when the steel box girder 5 is positioned and lowered, both sides of it can be in contact with the guiding and detecting structure 2 simultaneously, ensuring the accuracy of detection and guiding.

[0059] As Figure 6 shown, further, an arc-shaped groove 211 is provided on the fixing bracket 210, and a limiting block 270 capable of sliding in the arc-shaped groove 211 is sleeved outside the first support rod 220.

[0060] The rotation of the first support rod 220 can be restricted by the arc-shaped groove 211 and the limiting block 270.

[0061] As Figure 7 shown, further, detection parts are respectively provided on both sides of the limiting block 270 in the extending direction of the arc-shaped groove 211;

[0062] Second sliding grooves 271 are respectively provided on both sides of the limiting block 270 in the extending direction of the arc-shaped groove 211. The detection part includes: a detection rod 272, the detection rod 272 is slidably arranged in the second sliding groove 271, one end of the detection rod 272 extends out of the second sliding groove 271, and a second spring 273 is arranged between the other end of the detection rod 272 and the bottom surface of the second sliding groove 271. A first pressure sensor is arranged on the end surface of the detection rod 272 connected to the second spring 273.

[0063] When the first support rod 220 is in the first extreme position, the detection rod 272 contacts the lower end of the arc-shaped groove 211, and the initial pressure of the first pressure sensor is collected at this time;

[0064] If during the process of the steel box girder 5 descending to the second preset height, the situation as Figure 10 shown occurs, that is, when the steel box girder 5 contacts the guiding plate 250 before moving to the second preset height, the bottom of the steel box girder 5 will contact the upper part of the guiding plate 250, thus forming a downward acting force on the guiding plate 250. However, the guiding plate 250 will not rotate at this time, and the downward acting force causes the first support rod 220 to also receive a downward acting force (as Figure 11 shown), so that it rotates downward. However, the first support rod 220 is already in the first extreme position. At this time, the force condition of the first support rod 220 can be detected by the first pressure sensor, that is, the pressure value detected by the first pressure sensor will be greater than the collected initial pressure. At this time, the descent of the steel box girder 5 should be immediately stopped, and the position of the steel box girder 5 should be adjusted in time.

[0065] Through the above design, the position of the steel box girder 5 is detected and adjusted in real time, which can ensure the accuracy and stability of the downward movement position of the steel box girder 5, and prevent damage to the guiding detection mechanism 2 when the steel box girder 5 is displaced.

[0066] As Figure 5 shown, the first structure of the elastic telescopic member is shown. The elastic telescopic member is the third spring 230A. One end of the third spring 230A is connected to the first support rod 220, and the other end is connected to the fixed frame 210. A second pressure sensor is provided at the connection between the first support rod 220 and the third spring 230A.

[0067] The rotation angle of the first support rod 220 is detected by the second pressure sensor, so as to detect the deviation of the steel box girder 5 during downward movement, so as to facilitate real-time adjustment.

[0068] As Figure 8 shown, the second structure of the elastic telescopic member is shown. The elastic telescopic member is a pneumatic telescopic member 230B;

[0069] The pneumatic telescopic member 230B includes: a cylinder body 231 and a movable rod 232 slidably disposed in the cylinder body 231. One end of the cylinder body 231 is rotatably connected to the fixed frame 210. A plug body is provided at the end of the movable rod 232 located inside the cylinder body 231. A cavity is formed between the plug body and the closed end of the cylinder body 231. The end of the movable rod 232 extending outside the cylinder body 231 is slidably connected to the first support rod 220.

[0070] The rotation angle of the first support rod 220 can be detected by real-time monitoring of the pressure in the cavity. If the steel box girder 5 is displaced during downward movement, the pressure in one side cavity increases and the pressure in the other side cavity decreases. The cavity with increased pressure will push the movable rod 232 to move outward, thereby forming a driving force for the steel box girder 5 to ensure the accuracy of the position of the steel box girder 5 during downward movement, and further improving its installation accuracy;

[0071] In addition, within a preset time period, if the pressure in one side cavity is always greater than the pressure in the other side cavity, it means that the position of the steel box girder 5 needs to be adjusted.

[0072] As Figure 9 shown, further, the elastic limiting member 260 includes: an arc-shaped limiting rod 261 and an arc-shaped limiting portion 262 provided on the first support rod 220. One end of the arc-shaped limiting rod 261 is connected to the guide plate 250, and the other end is slidably disposed in the arc-shaped limiting portion 262 through a fourth spring 263. The centers of the arc-shaped limiting rod 261 and the arc-shaped limiting portion 262 are both located on the rotation center of the first support rod 220 and the second support rod 240.

[0073] One end of the arc-shaped limiting portion 262 is fixedly connected to the first support rod 220, and the other end is also fixedly connected to the first support rod 220 through a fixing rod. Moreover, the other end of the arc-shaped limiting portion 262, i.e., the end far from the first support rod 220, limits the rotation of the guide plate 250. When the guide plate 250 rotates under force, the fourth spring 263 will be compressed, causing the guide plate 250 to form an elastic abutting force on the steel box girder 5.

[0074] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0075] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A butt joint installation device for hoisting and positioning a continuous steel box girder, characterized in that: include: A stabilizing mechanism (1) is arranged below the hoisting frame (3) and a guiding detection mechanism (2) is arranged on both sides of the support (4); the support (4) is provided with a cushion block (6) for supporting the steel box girder (5); after the hook arranged on the hoisting frame (3) is connected with the lifting lug arranged on the top surface of the steel box girder (5), the stabilizing mechanism (1) elastically contacts the top surface of the steel box girder (5); after the steel box girder (5) is positioned and hoisted to a first preset height above the support (4), the steel box girder (5) is moved down to a second preset height, and before moving down to the second preset height, it is detected whether the steel box girder (5) is in contact with the guiding detection mechanism (2); if so, the position of the steel box girder (5) is adjusted; if not, the steel box girder (5) is guided to continue to move down through the guiding detection mechanism (2); The stabilizing mechanism (1) comprises: a plate body (110) in contact with the top surface of the steel box beam (5), and a rotating assembly (120) arranged below the hanging frame (3); the plate body (110) and the rotating assembly (120) are connected via an elastic assembly (130); The elastic component (130) comprises: a sleeve (131) connected to the bottom end of the rotating component (120); a movable block (132) is slidably connected inside the sleeve (131); one end of the movable block (132) extending out of the bottom of the sleeve (131) is connected to the plate body (110); and a first spring (133) is connected between the movable block (132) and the top of the sleeve (131); The outer sliding sleeve of the sleeve (131) is provided with a moving ring (134), and the moving ring (134) is connected to the movable block (132) through a fixing piece. The sleeve (131) is provided with a first sliding groove (135) for the fixing piece to pass through, and the first sliding groove (135) is extended along the axial direction of the sleeve (131); the outer sliding sleeve of the sleeve (131) is provided with a driving ring (136), and the driving ring (136) is arranged below the moving ring (134). The outer side of the sleeve (131) is provided with a driving part (137), and the output end of the driving part (137) is connected to a screw rod (138), and the screw rod (138) is threadedly connected to the driving ring (136).

2. The butt-jointed installation device for hoisting and positioning of a continuous steel box girder according to claim 1 is characterized in that: The guide detection mechanism (2) comprises: a fixed frame (210) arranged on a bracket (4); a first support rod (220) is rotatably arranged on the fixed frame (210); when the first support rod (220) is rotated downward to a first limit position, a set angle is formed between the first support rod (220) and a horizontal plane; an elastic telescopic member is connected between the first support rod (220) and the fixed frame (210); a second support rod (240) is hingedly connected to one end of the first support rod (220) away from the fixed frame (210); a guide plate (250) is arranged at the end of the second support rod (240) away from the first support rod (220); the guide plate (250) and the first support rod (220) are connected via an elastic limiting member (260); when the angle between the second support rod (240) and the first support rod (220) is 180 degrees, the guide plate (250) is located at the second limit position; The first limit position indicates that the downward rotation of the first support rod (220) is restricted, and the second limit position indicates that the upward rotation of the bottom end of the guide plate (250) is restricted.

3. The butt-jointed installation device for hoisting and positioning the continuous steel box girder according to claim 2 is characterized in that: The fixing frame (210) is provided with an arc-shaped groove (211), and the outer side of the first support rod (220) is sleeved with a limiting block (270) capable of sliding in the arc-shaped groove (211).

4. The butt-jointed installation device for hoisting and positioning the continuous steel box girder according to claim 3 is characterized in that: The limit block (270) is provided with a detection unit.

5. The butt-jointed installation device for hoisting and positioning a continuous steel box girder according to claim 2, characterized in that: The elastic telescopic member is a third spring (230A), one end of the third spring (230A) is connected to the first support rod (220), and the other end is connected to the fixing frame (210), and a second pressure sensor is provided at the connection between the first support rod (220) and the third spring (230A).

6. The butt joint installation device for hoisting and positioning of continuous steel box beams according to claim 2, characterized in that: The elastic telescopic member is a pneumatic telescopic member (230B).

7. The butt-jointed installation device for hoisting and positioning a continuous steel box girder according to claim 2, characterized in that: The elastic limiting member (260) comprises: an arc-shaped limiting rod (261) and an arc-shaped limiting portion (262); one end of the arc-shaped limiting rod (261) is connected to the guide plate (250), and the other end is slidably arranged in the arc-shaped limiting portion (262) via a fourth spring (263); the centers of the arc-shaped limiting rod (261) and the arc-shaped limiting portion (262) are both located on the rotation centers of the first support rod (220) and the second support rod (240).

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