A large-section steel box girder installation combined support device

Abstract

The application discloses a large-section steel box girder installation combined support device, which comprises a support base, a plurality of pairs of driving wheels are arranged on the bottom of the support base, and brake discs are arranged on the driving wheels; a lifting driver is fixed to the support base; a rotating mechanism is arranged on the moving end of the lifting driver, the output end of the rotating mechanism is provided with a receiving part, and the receiving part comprises a receiving plate and a bottom plate which are arranged in an upper-lower interval; a pair of adjusting mechanisms are oppositely arranged at the two ends of the receiving part, and the adjusting mechanism comprises a rotating driver, the fixed end of the rotating driver is arranged on the bottom plate; a lead screw is coaxially arranged on the output end of the rotating driver, a moving block is sleeved on the moving nut of the lead screw; a jacking rod is arranged on the moving block, and the upper end of the jacking rod is hinged to the receiving plate. Through the lifting mechanism, the rotating mechanism and the adjusting mechanism, the steel box girder on the receiving part is driven and finely adjusted to be flat and aligned with the steel box girder which has been positioned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of box girder installation. More particularly, the present application relates to a large-section steel box girder installation combined support device. BACKGROUND

[0002] In the reconstruction and expansion of highways or bridges, in order to reduce the impact of construction on the environment and facilitate construction, the method of large-section steel box girder splicing is generally used for reconstruction and expansion, which can effectively improve the construction progress.

[0003] The large-section steel box girder is large in size and is generally installed by a full-rotation crane. However, the construction cost of the full-rotation crane is high, and the construction is not convenient, which brings great inconvenience to the entire project. After the full-rotation crane transports the steel box girder to the site, the alignment between the steel box girders is not smooth enough, and accurate adjustment is needed. There are problems such as large self-weight, difficult adjustment, high requirement for anti-overturning stability during adjustment and cushioning, etc. Among them, the alignment adjustment between the box girders is mostly adjusted by multiple equipment combinations or three-way jacks. For example, the patent with application number 202110034883.8 discloses a large-section steel box girder installation and accurate adjustment combined support device, which supports the steel box girder by 2 three-way jacks synchronously stressed, integrates the temporary cushioning system and the adjustment system together, but the equipment has large self-weight and volume, and cannot be finely adjusted at both ends of the steel box girder to make it smooth and aligned with the adjacent steel box girder. Therefore, how to design a large-section steel box girder installation combined support device to obtain the beneficial effects of adjustment and keeping the adjacent steel box girders smooth and aligned, and convenient operation is worth thinking about. SUMMARY

[0004] An object of the present application is to solve at least the above problems and to provide at least the advantages to be described later.

[0005] In order to achieve these objects and other advantages according to the present application, a large-section steel box girder installation combined support device is provided, comprising:

[0006] A support base is provided with a plurality of pairs of drive wheels on the bottom, and a brake disc is provided on the drive wheel;

[0007] A lifting drive is fixed to the support base at the fixed end;

[0008] A rotating mechanism is provided on the moving end of the lifting drive, and the output end of the rotating mechanism is provided with a receiving part, and the receiving part includes a receiving plate and a bottom plate arranged vertically;

[0009] A pair of adjustment mechanisms are oppositely arranged at both ends of the receiving part, and the adjustment mechanism includes:

[0010] A rotating drive is fixed to the bottom plate at the fixed end;

[0011] a screw rod coaxially arranged on the output end of the rotating driver, a moving block sleeved on the moving nut of the screw rod;

[0012] a jacking rod, the lower end of which is arranged on the moving block, and the upper end of which is hingedly connected with the receiving plate. Preferably, the adjusting mechanism further comprises:

[0013] an inclination sensor arranged on the receiving plate along the length direction of the receiving plate, the inclination sensor being used for detecting the inclination angle of the receiving plate;

[0014] a control module electrically connected with the inclination sensor and the rotating driver, the control module receiving the detected inclination angle, calculating the distance to be raised or lowered in the vertical direction according to the inclination angle, and controlling the rotating stroke and start-stop of the rotating driver until the receiving plate is horizontally arranged.

[0015] Preferably, a pair of telescopic rods are arranged on both sides of the lifting driver, and the moving end of the telescopic rod is slidingly connected with the bottom of the bottom plate.

[0016] Preferably, the bottom of the bottom plate is provided with an annular slide rail, and a sliding block is slidingly arranged on the annular slide rail, and the sliding block is fixedly connected with the moving end of the telescopic rod.

[0017] Preferably, the telescopic rod is a telescopic air rod.

[0018] Preferably, the rotating mechanism comprises:

[0019] a connecting plate arranged on the moving end of the lifting driver;

[0020] a rotating driver, the fixed end of which is arranged on the connecting plate, and the output end of which is coaxially provided with a first gear, the axial direction of the first gear being arranged along the vertical direction;

[0021] a fixed shaft arranged on the connecting plate, a second gear being rotatably sleeved on the fixed shaft, the second gear being engaged with the first gear, and the top of the second gear being fixedly connected with the bottom plate.

[0022] Preferably, the lifting driver is a linear hydraulic cylinder.

[0023] Preferably, the receiving plate is concavely provided with a mounting groove.

[0024] Preferably, the upper end of the screw rod is provided with a limiting block.

[0025] the moving block is hollow, and the moving block cover is fixedly connected with the limiting block and the moving nut of the screw rod;

[0026] When the moving block rises to the maximum distance, the moving nut of the lead screw is in abutment with the limit block.

[0027] When the moving block falls to the maximum distance, the top end inner wall of the moving block is in abutment with the limit block.

[0028] The present application at least includes the following beneficial effects:

[0029] Firstly, the present application drives and fine-tunes the steel box girder on the receiving part to be flat and aligned with the already positioned steel box girder through the lifting mechanism, rotating mechanism and adjusting mechanism, and the adjusting mechanism can also fine-tune one end or both ends of the steel box girder when the steel box girder is inclined during the alignment process, so that the steel box girder remains flat and does not incline during the alignment process.

[0030] Secondly, the present application detects the inclination angle through the inclination sensor and controls the rotation stroke and start-stop of the rotating driver through the control module connected thereto, so as to adjust the steel box girder to remain flat and not inclined during the alignment process.

[0031] Other advantages, objects and features of the present application will be partly embodied in the following description, and will also be understood by those skilled in the art through the study and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a side view of the combined support device of one of the technical solutions of the present application.

[0033] Figure 2 It is a side view of the rotating mechanism of one of the technical solutions of the present application.

[0034] Figure 3 It is a side view of the adjusting mechanism of one of the technical solutions of the present application.

[0035] Figure 4 It is a side view of the adjusting mechanism of one of the technical solutions of the present application. Figure 1 It is an enlarged view of structure A.

[0036] Figure 5 It is a side view of the adjusting mechanism of one of the technical solutions of the present application.

[0037] Figure 6 It is a bottom view of the bottom plate of one of the technical solutions of the present application. DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description.

[0039] It should be noted that the experimental methods in the following embodiments are conventional methods, and the reagents and materials are commercially available unless otherwise specified. In the description of the present application, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0040] As shown in the Figures 1-6 The present application provides a large segment steel box girder installation combined support device, comprising:

[0041] A support base 1 is provided with a plurality of pairs of drive wheels 11 at the bottom, and a brake disc is arranged on the drive wheel 11. The drive wheel 11 is driven to rotate by a rotary motor or a rotary cylinder, and the movement mode of the drive wheel 11 is controlled by the rotary motor or the rotary cylinder to control the walking and turning of the support base 1. The brake disc arranged on the drive wheel 11 is used to control the brake of the drive wheel 11, so as to conveniently control the walking of the support base 1.

[0042] A lifting drive 2 is fixed to the support base 1. The lifting drive 2 can be a linear hydraulic cylinder or a linear pneumatic cylinder, and is preferably a linear hydraulic cylinder. The fixed end of the lifting drive 2 is arranged on the support base 1 to form an integral whole. The lifting drive 2 moves with the walking of the support base 1.

[0043] A rotating mechanism 3 is arranged on the moving end of the lifting drive 2. The output end of the rotating mechanism 3 is provided with a receiving part 4, and the receiving part 4 includes a receiving plate 41 and a bottom plate 42 arranged in an upper and lower spaced manner. The materials of the receiving plate 41 and the bottom plate 42 can be stainless steel or carbon steel, so as to have high strength and high hardness, and support the steel box girder. The receiving plate 41 can be concave to form a mounting groove. When aligned and mounted, the steel box girder is located on the mounting groove of the receiving plate 41. The rotating mechanism 3 includes a rotating drive 32 and a gear set connected to the output end of the rotating drive 32. The rotating drive 32 drives the gear set to rotate, drives the receiving part 4 connected to the gear set to rotate, and further realizes the rotation of the steel box girder located on the receiving part 4. The lifting drive 2 at the lower end of the rotating mechanism 3 is used to realize the up and down movement of the steel box girder.

[0044] A pair of adjusting mechanisms 5 are arranged at the two ends of the receiving part 4. The adjusting mechanism 5 includes:

[0045] A rotating driver 51 is arranged on the bottom plate 42; the rotating driver 51 can be a rotary motor, a rotary cylinder or a rotary oil cylinder, preferably a rotary motor, and the model can be NEMA17; the rotating driver 51 has the advantages of low vibration, low heat, high speed and large torque;

[0046] A screw rod 52 is coaxially arranged on the output end of the rotating driver 51, and a moving block 53 is arranged on the moving nut 521 of the screw rod 52; the screw rod 52 can be a ball screw rod 52 with a ball screw thread; the rotating driver 51 rotates to drive the coaxial rotation of the screw rod 52; by controlling the rotation direction of the rotating driver 51, the moving nut 521 of the screw rod 52 is raised and lowered on the screw rod 52, thereby driving the moving block 53 to be raised and lowered;

[0047] A jacking rod 54 is arranged on the moving block 53, and the upper end of the jacking rod 54 is hingedly connected to the receiving plate 41; the moving block 53 is raised and lowered on the screw rod 52 under the action of the moving nut 521, so that the jacking rod 54 is raised and lowered to jack up the receiving plate 41; the jacking rod 54 can be made of carbon steel or stainless steel to have high strength and high hardness, so as to jack up the receiving plate 41 and then finely adjust the height of the steel box girder on the receiving plate 41 to be aligned with the adjacent steel box girder.

[0048] In the above technical solution, the entire support device is moved to a suitable position by starting the driving wheel 11, the steel box girder is placed on the receiving plate 41, the rotating mechanism 3 and the receiving part 4 for supporting the steel box girder are moved upward by starting the lifting driver 2, the steel box girder is moved to the splicing position, the steel box girder on the receiving part 4 is moved by rotating the rotating mechanism 3 to be arranged along the same straight line as the adjacent steel box girder and to be lapped on the pier, and then the two ends of the steel box girder are finely adjusted by a pair of adjustment mechanisms 5 synchronously or separately to be aligned with the adjacent steel box girder, wherein the adjustment mechanism 5 is finely adjusted by starting the rotating driver 51 to rotate the screw rod 52 coaxially, so that the moving block 53 is raised and lowered on the screw rod 52 under the action of the moving nut 521, and then the jacking rod 54 is moved up and down to jack up or pull up the receiving plate 41 to correspondingly rise or fall, thereby finely adjusting the steel box girder; when the steel box girder is inclined during the alignment process, the adjustment mechanism 5 can finely adjust one end or both ends of the steel box girder by using the above fine adjustment method to keep the steel box girder flat and not inclined during the alignment process.

[0049] In another technical solution, the adjustment mechanism 5 further comprises:

[0050] An inclination sensor 7 is arranged on the receiving plate 41 along the length direction of the receiving plate 41, and is used to detect the inclination angle of the receiving plate 41. The inclination sensor 7 is a single-axis inclination sensor 7, and the axis direction is arranged along the length direction of the receiving plate 41, i.e. along the length direction of the steel box girder. The model of the inclination sensor 7 can be SCA610-CAHH1G. The inclination sensor 7 detects the inclination angle of the receiving plate 41, and can monitor the inclination of the steel box girder due to the placement position or other factors, and suppress the receiving plate 41 from being in an inclined state.

[0051] A control module is electrically connected with the inclination sensor 7 and the rotation driver 51. The control module receives the detected inclination angle, calculates the distance to be raised or lowered in the vertical direction according to the inclination angle, and controls the rotation stroke and start-stop of the rotation driver 51 until the receiving plate 41 is arranged horizontally. The control module can be a PLC chip, which includes a driving chip and a control chip. The control chip and the driving chip are electrically connected with the motor of the rotation driver 51. The driving chip is used to control the current communication of the motor, i.e. to control the start-stop of the rotation of the rotation driver 51. The control chip is used to control the rotation direction and speed of the motor, i.e. to control the rotation stroke of the rotation driver 51. Specifically, the control module receives the detected inclination angle, calculates the distance to be raised or lowered in the vertical direction according to the inclination angle, controls the motor of one of the rotation drivers 51 to start, and controls the rotation direction to raise or lower one end of the steel box girder until the inclination sensor 7 detects an angle of 0°, and the receiving plate 41 is arranged horizontally, so as to keep the steel box girder flat and not inclined.

[0052] In the above technical solution, during the alignment of the support structure to the steel box girder, the inclination sensor 7 detects the inclination angle of the receiving plate 41. When the detected inclination angle is 0°, the steel box girder is kept flat and not inclined, and there is no need to fine-tune the inclination angle during alignment. When the detected inclination angle is not 0°, the inclination sensor 7 transmits the detected inclination angle to the control module through the wire. The control module receives the inclination angle, and controls the motor of the rotation driver 51 close to the alignment end of the steel box girder to rotate, so that the adjusting mechanism 5 lifts or lowers the receiving plate 41, and adjusts the angle of the receiving plate 41 until the inclination angle of the receiving plate 41 is 0°, i.e. the steel box girder on the receiving plate 41 is kept flat and not inclined. The control module controls the forward rotation and reverse rotation of the rotation driver 51 according to the positive and negative of the detected inclination angle, i.e. according to whether the alignment end of the steel box girder is raised upward or collapsed downward.

[0053] In another technical scheme, a pair of telescopic rods 6 are arranged on both sides of the lifting driver 2, and the moving end of the telescopic rod 6 is slidably connected to the bottom of the bottom plate 42; the fixed end of the telescopic rod 6 is arranged on the support base 1, and the moving end of the telescopic rod 6 is slidably connected to the bottom of the bottom plate 42 through the sliding block 422 and the sliding rail; the pair of telescopic rods 6 are used for supporting the two ends of the receiving part 4 and indirectly supporting the two ends of the steel box girder, so that the steel box girder is kept flat during alignment; the telescopic rod 6 is arranged in the vertical direction and is telescopic, so that the telescopic rod 6 supports the steel box girder without affecting the lifting driving of the lifting driver 2 on the steel box girder; and the moving end of the telescopic rod 6 is slidably connected to the bottom plate 42, so that it does not affect the rotation driving of the rotating mechanism 3 on the steel box girder.

[0054] In another technical scheme, the bottom of the bottom plate 42 is provided with an annular sliding rail 421, the sliding block 422 is slidably arranged on the annular sliding rail 421, and the moving end of the telescopic rod 6 is fixedly connected to the sliding block 422; specifically, the sliding block 422 and the annular sliding rail 421 are arranged so that, when the rotating mechanism 3 drives the bottom plate 42 to rotate, the moving end of the telescopic rod 6 can be assisted by the sliding block 422 to rotate without affecting the rotation of the bottom plate 42, and the telescopic rod 6 can still provide a certain supporting force for the steel box girder on the receiving plate 41.

[0055] In another technical scheme, the telescopic rod 6 is a telescopic air rod; specifically, the telescopic air rod has the advantages of large load, small noise, fast lifting, small shock resistance, strong self-falling buffer performance, and stability, so that the telescopic rod 6 can be lifted under the driving of the lifting driver 2 without using electric energy, and simultaneously the lifting driver 2 applies a supporting force to the two ends of the steel box girder.

[0056] In another technical scheme, the rotating mechanism 3 comprises:

[0057] A connecting plate 31 is arranged on the moving end of the lifting driver 2; the material of the connecting plate 31 can be stainless steel or carbon steel, and the connecting plate 31 is vertically fixedly connected to the moving end of the lifting driver 2 by welding or a bolt and a nut;

[0058] A rotating driver 32 is arranged on the connecting plate 31, and a first gear 33 is coaxially arranged on the output end of the rotating driver 32; the axial direction of the first gear 33 is arranged in the vertical direction; wherein the rotating driver 32 can be a rotating motor or a rotating air cylinder; the rotating driver 32 drives the first gear 33 which is coaxially connected to the output end of the rotating driver 32; and the axial direction of the first gear 33 is arranged in the vertical direction, so that the first gear 33 rotates horizontally;

[0059] A fixed shaft 35 is arranged on the connecting plate 31, a second gear 34 is rotatably sleeved on the fixed shaft 35, the second gear 34 is engaged with the first gear 33, and the top of the second gear 34 is fixedly connected with the bottom plate 42; the fixed shaft 35 is welded and fixed on the connecting plate 31, the second gear 34 is rotatably sleeved on the fixed shaft 35, the fixed shaft 35 provides support force for the rotation of the second gear 34, the first gear 33 is driven to rotate under the driving of the rotary driver 32, the second gear 34 engaged with the first gear 33 is driven to rotate, and the bottom plate 42 fixedly connected with the top of the second gear 34 is driven to rotate, thereby realizing the beneficial effect of rotating the receiving part 4 and the steel box girder located on the receiving part 4.

[0060] In the above technical solution, when the steel box girder needs to be rotated, the rotary driver 32 is driven to drive the first gear 33 to rotate horizontally, the second gear 34 engaged with the first gear 33 is driven to rotate horizontally, and the bottom plate 42 fixedly connected with the top of the second gear 34 is driven to rotate, thereby realizing the beneficial effect of rotating the receiving part 4 and the steel box girder located on the receiving part 4. The gear set composed of the first gear 33 and the second gear 34 is used to convert the vertical rotation of the rotary driver 32 into horizontal rotation, thereby reducing the pressure of the steel box girder, the receiving part 4 and the adjusting mechanism 5 on the rotary driver 32, and affecting the rotation effect of the rotary driver 32.

[0061] In another technical solution, the lifting driver 2 is a linear hydraulic cylinder; compared with a linear motor and a linear cylinder, the linear hydraulic cylinder has greater driving force and better driving effect on the lifting of the steel box girder, and compared with a traditional rotary hanger installation, the hydraulic driving installation is more convenient for workers to operate.

[0062] In another technical solution, the receiving plate 41 is concavely provided with a mounting groove; the mounting groove is arranged along the length direction of the receiving plate 41, the steel box girder is moved into the mounting groove, so as to stably lift and rotate the steel box girder without causing sliding and bringing safety hazards.

[0063] In another technical solution, a limiting block 522 is arranged at the upper end of the lead screw 52;

[0064] The moving block 53 is hollow, the moving block 53 is covered on the limiting block 522 and the moving nut 521 of the lead screw 52 is fixedly connected;

[0065] When the moving block 53 rises to the maximum distance, the moving nut 521 of the lead screw 52 abuts against the limiting block 522;

[0066] When the moving block 53 is lowered to the maximum distance, the inner side wall of the top end of the moving block 53 abuts against the limiting block 522; specifically, the length of the lead screw 52 is greater than the height of the moving block 53, the limiting block 522 is vertically welded on the top of the lead screw 52, the limiting block 522 is in limiting abutment with the moving nut 521 of the lead screw 52 and the inner side wall of the top end of the moving block 53, which helps to limit the maximum distance of the moving block 53 from rising or lowering, preventing the moving block 53 from being separated from the lead screw 52, and reducing the extrusion on the bottom plate 42 when the moving block 53 is lowered to the maximum distance.

[0067] While the embodiments of the application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the application, and additional modifications can be easily realized by those skilled in the art, and therefore the application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A combined support device for installing large-segment steel box girders, characterized in that, include: A support base with multiple pairs of drive wheels at its bottom, and brake discs on the drive wheels; A lifting drive, the fixed end of which is located on the support base; A rotating mechanism is provided on the moving end of the lifting drive. The output end of the rotating mechanism is provided with a receiving part, which includes a receiving plate and a base plate arranged at intervals. A pair of adjustment mechanisms are disposed opposite to each other at both ends of the receiving portion, the adjustment mechanisms comprising: A rotary actuator, the fixed end of which is located on the base plate; A lead screw is coaxially mounted on the output end of the rotary actuator, and a moving block is sleeved on the moving nut of the lead screw; A lifting rod, the lower end of which is mounted on the movable block, and the upper end of which is hinged to the receiving plate; It also includes a pair of telescopic rods, which are respectively arranged on both sides of the lifting drive, and the moving end of the telescopic rods is slidably connected to the bottom of the base plate; The bottom of the base plate is provided with an annular slide rail, and a slider is slidably mounted on the annular slide rail. The slider is fixedly connected to the moving end of the telescopic rod.

2. The combined support device for installing large-segment steel box girders as described in claim 1, characterized in that, The adjustment mechanism also includes: An inclination sensor is disposed on the support plate along the length direction of the support plate, and the inclination sensor is used to detect the tilt angle of the support plate; The control module is connected to the tilt sensor and the rotation driver by wires. The control module receives the detected tilt angle, calculates the vertical distance that needs to be raised or lowered based on the tilt angle, and controls the rotation stroke and start / stop of the rotation driver until the receiving plate is set horizontally.

3. The combined support device for installing large-segment steel box girders as described in claim 1, characterized in that, The telescopic rod is a telescopic pneumatic rod.

4. The combined support device for installing large-segment steel box girders as described in claim 1, characterized in that, The rotating mechanism includes: A connecting plate is disposed on the moving end of the lifting drive; A rotary driver, the fixed end of which is disposed on the connecting plate, and the output end of the rotary driver is coaxially provided with a first gear, the axial direction of which is arranged in the vertical direction; A fixed shaft is provided on the connecting plate, and a second gear is rotatably sleeved on the fixed shaft. The second gear meshes with the first gear, and the top of the second gear is fixedly connected to the base plate.

5. The combined support device for installing large-segment steel box girders as described in claim 1, characterized in that, The lifting drive is a linear hydraulic cylinder.

6. The combined support device for installing large-segment steel box girders as described in claim 1, characterized in that, The receiving plate is recessed with an installation groove.

7. The combined support device for installing large-segment steel box girders as described in claim 1, characterized in that, The upper end of the lead screw is provided with a limiting block; The movable block is hollow inside, and the movable block is fixedly connected to the moving nut of the limiting block and the lead screw. When the moving block rises to its maximum distance, the moving nut of the lead screw abuts against the limiting block. When the moving block descends to its maximum distance, the inner sidewall of the top of the moving block abuts against the limiting block.

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