Limiting and guiding device for incremental launching construction of steel box girder

Abstract

The utility model discloses a limiting and guiding device for steel box girder pushing construction, which relates to the technical field of steel box girder pushing construction and comprises a limiting and guiding structure, the limiting and guiding structure comprises an air cylinder, the output end of the air cylinder is fixedly connected with a push rod, the top of the push rod is fixedly connected with a sleeving body, and the sleeving body is movably connected with a fixing bolt. The fixed bolt is fixedly connected with a supporting rod, the side, away from the fixed bolt, of the supporting rod is fixedly connected with a connecting piece, the movable bolt is fixedly connected with a fixed piece, the first sleeving piece is movably connected with a first rotating roller, and the second sleeving piece is movably connected with a second rotating roller. The angle of the supporting rod is adjusted through the sleeving body, the top of the steel box girder is fixed through the first rotating roller and the second rotating roller, the problem that when pushing equipment breaks down or temporarily stops pushing under other conditions, the safety of the steel box girder cannot be guaranteed is solved, and therefore the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder jacking construction, in particular to a steel box girder jacking construction limiting guide device. Background Art

[0002] With the acceleration of urbanization, the demand for municipal bridge construction continues to grow. The jacking construction technology is widely used due to its advantages such as simple construction, low noise, smooth construction and guaranteed construction quality. In the jacking construction of bridges, in order to ensure that the bridge moves along the predetermined jacking route, a guide device needs to be set to guide the forward trajectory of the bridge.

[0003] Chinese patent CN210140772U discloses a steel box girder jacking construction limit guide device with reasonable design and high efficiency. A steel box girder jacking construction limit guide device, the steel box girder jacking construction limit guide device is symmetrically arranged on both sides of the steel box girder, which includes a support frame, a lateral displacement fine-tuning mechanism and one or more limit guide mechanisms; the lateral displacement fine-tuning mechanism is arranged on the outside of the support frame, used to drive the support frame to move along the crossbeam; the limit guide mechanism is located between the steel box girder and the support frame bracket, each limit guide mechanism includes a roller, a roller frame and two or more screw nut assemblies, the roller is arranged on the roller frame, and the roller frame is connected to the support frame through the screw nut assembly. This structure has certain defects, the rotation direction of the roller is not limited, it can only play a separate guiding role, and the limiting role is not great. When the jacking equipment fails or other conditions temporarily stop jacking, the safety of the steel box girder cannot be guaranteed, and it is difficult to meet the user's use needs.

[0004] Therefore, in order to solve such problems, we proposed a limiting guide device for the jacking construction of steel box girder. Utility Model Content

[0005] The purpose of the utility model is to solve certain defects in the structure of the prior art. The rotation direction of the roller is not restricted and can only play a separate guiding role. The limiting effect is not great. When the pushing equipment fails or other conditions temporarily stop pushing, the safety of the steel box girder cannot be guaranteed, and it is difficult to meet the user's needs. A limiting guiding device for steel box girder pushing construction is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a limit guide device for top-pushing construction of a steel box girder, comprising a limit guide structure, the limit guide structure comprising a cylinder, a push rod is fixedly connected to the output end of the cylinder, a sleeve body is fixedly connected to the top of the push rod, a fixing bolt is movably connected to the sleeve body, a support rod is fixedly connected to the fixing bolt, a connecting piece is fixedly connected to the side of the support rod away from the fixing bolt, a movable bolt is movably connected to the connecting piece, and a fixing piece is fixedly connected to the movable bolt;

[0007] A first column is fixedly connected to the top of the connecting piece, a first mounting groove is provided on the top of the first column, a first mounting block is movably connected in the first mounting groove, a first bolt is threadedly connected to the first mounting block, a first sleeve is fixedly connected to the top of the first mounting block, a first rotating roller is movably connected to the first sleeve, a second column is fixedly connected to one side of the connecting piece, a second mounting groove is provided on the top of the second column, a second mounting block is movably connected in the second mounting groove, a second bolt is threadedly connected to the second mounting block, a second sleeve is fixedly connected to the top of the second mounting block, a second rotating roller is movably connected to the second sleeve, and a push rod is driven by a cylinder to move up and down, the push rod pushes the sleeve body to move up and down, and the sleeve body drives the support rod to deflect around the movable bolt as the center.

[0008] Preferably, a supporting structure is provided at the bottom of the cylinder, the supporting structure includes a base plate fixedly connected to the bottom of the cylinder, the bottom of the base plate is fixedly connected to a leg, the top of the base plate is fixedly connected to a controller, the top of the base plate is fixedly connected to a push rod, the top of the push rod is fixedly connected to the top plate, and the bottom of the top plate is fixedly connected to a spring.

[0009] Preferably, a sleeve body is fixedly connected to the top of the push rod, a fixing bolt is movably connected to the sleeve body, and a support rod is fixedly connected to the fixing bolt.

[0010] Preferably, the top of the connecting member is fixedly connected to a first column, the top of the first column is provided with a first mounting groove, a first mounting block is movably connected in the first mounting groove, a first bolt is threadedly connected to the first mounting block, and the top of the first mounting block is fixedly connected to a first socket.

[0011] Preferably, a second column is fixedly connected to one side of the connecting member, a second mounting groove is opened on the top of the second column, a second mounting block is movably connected in the second mounting groove, a second bolt is threadedly connected to the second mounting block, and a second socket is fixedly connected to the top of the second mounting block.

[0012] Preferably, a controller is fixedly connected to the top of the base plate.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, the sleeve body and the support rod are cooperated with each other, so that the sleeve body is used to adjust the angle of the support rod, and the first rotating roller and the second rotating roller are used to fix the top of the steel box girder. At the same time, the first mounting block and the second mounting block are provided to adjust the size of the fixed steel box girder top, thereby avoiding the problem that the safety of the steel box girder cannot be guaranteed when the jacking equipment fails or other conditions temporarily stop jacking, thereby achieving the effect of limiting guidance, improving work efficiency, and having a simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a steel box girder top-pushing construction limiting guide device proposed by the utility model;

[0016] Figure 2 This is a three-dimensional exploded view of a steel box girder top-pushing construction limiting guide device proposed by the utility model;

[0017] Figure 3 A three-dimensional exploded view of a guide member of a steel box girder top-pushing construction limiting guide device proposed by the utility model;

[0018] Figure 4 The present invention is a three-dimensional exploded view of a limiting component of a limiting guide device for top-pushing construction of a steel box girder proposed by the present invention.

[0019] Legend:

[0020] 1. Position-limiting guide structure; 11. Cylinder; 111. Push rod; 112. Socket body; 12. Fixing bolt; 121. Support rod; 13. Connecting piece; 131. Movable bolt; 132. Fixing piece; 14. First column; 141. First mounting groove; 142. First mounting block; 143. First bolt; 144. First socket member; 145. First rotating roller; 15. Second column; 151. Second mounting groove; 152. Second mounting block; 153. Second bolt; 154. Second socket member; 155. Second rotating roller; 2. Support structure; 21. Bottom plate; 22. Support leg; 23. Controller; 24. Push rod; 241. Top plate; 242. Spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Reference Figure 1-4 The utility model provides an embodiment: a limit guide device for top pushing construction of a steel box girder, comprising a limit guide structure 1, the limit guide structure 1 comprising a cylinder 11, the cylinder 11 is used to drive a push rod 111, the output end of the cylinder 11 is fixedly connected with a push rod 111, the push rod 111 is used to push a sleeve body 112, the top of the push rod 111 is fixedly connected with a sleeve body 112, the sleeve body 112 is used to sleeve a fixing bolt 12, the sleeve body 112 is movably connected with a fixing bolt 12, the fixing bolt 12 is used to The sleeve body 112 is sleeved, the fixing bolt 12 is fixedly connected with a support rod 121, the function of the support rod 121 is to fix the connecting member 13, the side of the support rod 121 away from the fixing bolt 12 is fixedly connected with the connecting member 13, the function of the connecting member 13 is to fix the first column 14 and the second column 15, the connecting member 13 is movably connected with a movable bolt 131, the function of the movable bolt 131 is to sleeve the connecting member 13, the movable bolt 131 is fixedly connected with a fixing member 132, the function of the fixing member 132 is to fix the movable bolt 131;

[0024] The top of the connecting member 13 is fixedly connected with a first column 14, and the function of the first column 14 is fixed installation. A first installation groove 141 is provided on the top of the first column 14, and the function of the first installation groove 141 is to install a first installation block 142. The first installation block 142 is movably connected in the first installation groove 141, and the function of the first installation block 142 is to fix a first sleeve 144. A first bolt 143 is threadedly connected on the first installation block 142, and the function of the first bolt 143 is to fix. The top of the first installation block 142 is fixedly connected with a first sleeve 144, and the function of the first sleeve 144 is to sleeve a first rotating roller 145. The first sleeve 144 is movably connected with a first rotating roller 145, and the function of the first rotating roller 145 is to limit the top of the steel box girder A second column 15 is fixedly connected to one side of the connecting member 13, and the function of the second column 15 is fixed installation. A second installation groove 151 is opened on the top of the second column 15, and the function of the second installation groove 151 is a second installation block 152. The second installation block 152 is movably connected in the second installation groove 151, and the function of the second installation block 152 is to fix the second socket 154. The second mounting block 152 is threadedly connected with a second bolt 153, and the function of the second bolt 153 is to fix. The top of the second mounting block 152 is fixedly connected with a second socket 154, and the function of the second socket 154 is to socket a second rotating roller 155. The second socket 154 is movably connected with a second rotating roller 155, and the function of the second rotating roller 155 is to limit the top of the steel box girder.

[0025] The cylinder 11 drives the push rod 111 to move up and down, the push rod 111 pushes the sleeve body 112 to move up and down, and the sleeve body 112 drives the support rod 121 to deflect around the movable bolt 131 as the center.

[0026] A supporting structure 2 is provided at the bottom of the cylinder 11, and the supporting structure 2 includes a bottom plate 21 fixedly connected to the bottom of the cylinder 11, the function of the bottom plate 21 is to install the limiting guide structure 1, the bottom of the bottom plate 21 is fixedly connected with a support leg 22, the function of the support leg 22 is to support the overall device, the top of the bottom plate 21 is fixedly connected with a controller 23, the function of the controller 23 is to control the cylinder 11, the top of the bottom plate 21 is fixedly connected with a push rod 24, the function of the push rod 24 is to support a top plate 241, the top of the push rod 24 is fixedly connected with a top plate 241, the function of the top plate 241 is to install the top of the steel box girder, and the bottom of the top plate 241 is fixedly connected with a spring 242, the function of the spring 242 is a buffer support.

[0027] The top of the push rod 111 is fixedly connected with a sleeve body 112 , a fixing bolt 12 is movably connected to the sleeve body 112 , a support rod 121 is fixedly connected to the fixing bolt 12 , and the sleeve body 112 and the support rod 121 are movably sleeved via the fixing bolt 12 .

[0028] The top of the connecting member 13 is fixedly connected to the first column 14, the top of the first column 14 is provided with a first mounting groove 141, the first mounting block 142 is movably connected in the first mounting groove 141, the first mounting block 142 is threadedly connected with a first bolt 143, the top of the first mounting block 142 is fixedly connected to the first socket 144, the first column 14 and the first socket 144 are fixedly connected via the first mounting groove 141, the first mounting block 142 and the first bolt 143.

[0029] A second column 15 is fixedly connected to one side of the connecting member 13, a second mounting groove 151 is opened on the top of the second column 15, a second mounting block 152 is movably connected in the second mounting groove 151, a second bolt 153 is threadedly connected to the second mounting block 152, a second socket 154 is fixedly connected to the top of the second mounting block 152, and the second column 15 and the second socket 154 are fixedly connected via the second mounting groove 151, the second mounting block 152 and the second bolt 153.

[0030] A controller 23 is fixedly connected to the top of the bottom plate 21 , and the cylinder 11 is electrically connected to the controller 23 .

[0031] Working principle: first, place the top of the steel box girder to be installed on the top of the top plate 241, and then start the cylinder 11. The cylinder 11 drives the push rod 111 to move up and down, and the push rod 111 pushes the sleeve body 112 to move up and down. The sleeve body 112 drives the support rod 121 to deflect around the movable bolt 131, and the support rod 121 drives the first column 14 and the second column 15 to deflect around the connecting piece 13, so that the first rotating roller 145 and the second rotating roller 155 fix and limit the top of the steel box girder. The structure is simple and easy to operate.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A limit guide device for steel box girder top-pushing construction, comprising a limit guide structure (1), characterized in that: The position limiting guide structure (1) comprises a cylinder (11), the output end of the cylinder (11) is fixedly connected to a push rod (111), the top of the push rod (111) is fixedly connected to a sleeve body (112), the sleeve body (112) is movably connected to a fixing bolt (12), the fixing bolt (12) is fixedly connected to a support rod (121), a side of the support rod (121) away from the fixing bolt (12) is fixedly connected to a connecting piece (13), a movable bolt (131) is movably connected to the connecting piece (13), and a fixing piece (132) is fixedly connected to the movable bolt (131); The top of the connecting member (13) is fixedly connected to a first column (14), a first mounting groove (141) is provided on the top of the first column (14), a first mounting block (142) is movably connected in the first mounting groove (141), a first bolt (143) is threadedly connected to the first mounting block (142), a first sleeve (144) is fixedly connected to the top of the first mounting block (142), a first rotating roller (145) is movably connected to the first sleeve (144), a second column (15) is fixedly connected to one side of the connecting member (13), and a first mounting groove (141) is provided on the top of the first column (15). A second mounting groove (151) is movably connected to a second mounting block (152) in the second mounting groove (151), a second bolt (153) is threadedly connected to the second mounting block (152), a second sleeve member (154) is fixedly connected to the top of the second mounting block (152), and a second rotating roller (155) is movably connected to the second sleeve member (154). The push rod (111) is driven by the cylinder (11) to move up and down, the push rod (111) pushes the sleeve body (112) to move up and down, and the sleeve body (112) drives the support rod (121) to deflect around the movable bolt (131).

2. A steel box girder top-pushing construction limiting guide device according to claim 1, characterized in that: A support structure (2) is provided at the bottom of the cylinder (11), the support structure (2) comprising a bottom plate (21) fixedly connected to the bottom of the cylinder (11), a support leg (22) fixedly connected to the bottom of the bottom plate (21), a controller (23) fixedly connected to the top of the bottom plate (21), a top rod (24) fixedly connected to the top of the bottom plate (21), a top plate (241) fixedly connected to the top of the top rod (24), and a spring (242) fixedly connected to the bottom of the top plate (241).

3. A steel box girder top-pushing construction limiting guide device according to claim 1, characterized in that: The sleeve body (112) and the support rod (121) are movably sleeved via a fixing bolt (12).

4. According to claim 1, a limit guide device for top-pushing construction of a steel box girder is characterized by: The first upright column (14) and the first sleeve member (144) are fixedly connected via a first mounting groove (141), a first mounting block (142) and a first bolt (143).

5. The limit guide device for top-pushing construction of a steel box girder according to claim 1 is characterized by: The second upright column (15) and the second sleeve member (154) are fixedly connected via a second mounting groove (151), a second mounting block (152) and a second bolt (153).

6. The limit guide device for steel box girder top-pushing construction according to claim 1 is characterized by: The cylinder (11) is electrically connected to the controller (23).

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