Mounting and correcting device for large-span steel truss

Abstract

The utility model provides an installation correcting device for a large-span steel truss, and belongs to the field of building construction. According to the technical scheme, the device comprises a supporting plate, a pull rope is arranged at the top end of the supporting plate and connected to the tower crane, front-back adjusting mechanisms are arranged on the two sides of the top end of the supporting plate, outer U-shaped plates are arranged on the two sides of the lower portion of the supporting plate, up-down adjusting mechanisms are arranged on the upper portions of the inner sides of the two outer U-shaped plates, and inner U-shaped plates are arranged on the lower portions of the inner sides of the two outer U-shaped plates; and fixing mechanisms are arranged in the two inner U-shaped plates. The utility model has the beneficial effects that the structure is simple, the use is convenient, and the installation efficiency of the steel truss is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to an installation and correction device for a large-span steel truss. Background Art

[0002] Steel trusses refer to trusses made of steel, such as crane beams, bridges and hydraulic gates in industrial and civil buildings. Steel trusses are often used as the main load-bearing components. Various towers, such as mast towers, TV towers and transmission line towers, often use three-sided, four-sided or multi-sided plane trusses to form spatial steel trusses. The most commonly used is the plane truss. Under the action of lateral loads, its force is essentially a lattice beam. Compared with solid-web steel beams, steel trusses are characterized by replacing flanges with chords and webs with webs, and connecting the webs and chords to each other through node plates with welds or other connections.

[0003] The existing referenceable Chinese utility model patent with the announcement number CN211313424U discloses an auxiliary device for the hoisting of a large-span steel truss. The beneficial effect of the utility model is that the delivery device of the utility model can transport two adjacent trusses (steel components) to be installed to the working platform, saving manpower and material resources, improving the safety factor of transportation, and having high work efficiency. In addition, the electric cylinder can adjust the height of the support block, and the through groove on the top surface of the support block matches the bottom of the adjacent two trusses (steel components). Adjusting the height of the support block is to adjust the height of the steel component, and then the steel component is installed on the installed large-span steel truss, thereby completing the installation of the entire truss.

[0004] Existing large-span steel trusses cannot be hoisted as a whole and are generally installed in sections. During the sectioned installation, it is impossible to ensure that the docking interfaces of each section of the steel truss are in the same straight line after installation, which is inconvenient for correction processing. Therefore, technical personnel in this field provide an installation correction device for large-span steel trusses to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide a large-span steel truss installation and correction device which has a simple structure, is easy to use and greatly improves the steel truss installation efficiency.

[0006] The utility model is achieved through the following measures:

[0007] A device for correcting installation of a large-span steel truss, characterized in that it comprises a support plate, a pull rope is arranged at the top of the support plate, the pull rope is connected to a tower crane, front and rear adjustment mechanisms are arranged on both sides of the top of the support plate, outer U-shaped plates are arranged on both sides below the support plate, up and down adjustment mechanisms are arranged on the upper inner sides of the two outer U-shaped plates, inner U-shaped plates are arranged on the lower inner sides of the two outer U-shaped plates, and fixing mechanisms are arranged inside the two inner U-shaped plates;

[0008] The front and rear adjustment mechanism includes two pairs of fixed blocks arranged on both sides of the top end of the support plate, and two lead screws are rotatably connected between the four fixed blocks through bearings. A driving motor is fixedly arranged on the two rear fixed blocks, and the output ends of the two driving motors are fixedly connected to the two lead screws. The outer surfaces of the two lead screws are threadedly connected to movable plates, and openings are provided on both sides of the top end of the support plate. The bottom ends of the two movable plates respectively penetrate the inner sides of the two openings and extend to the bottom of the support plate and are fixedly connected to the top ends of the two outer U-shaped plates. Slide blocks are provided on both sides of the middle of the top ends of the two outer U-shaped plates, and two sliding grooves are provided on both sides of the bottom end of the support plate.

[0009] The specific features of the utility model also include:

[0010] The outsides of the four sliding blocks are all in sliding connection with the insides of the four sliding grooves;

[0011] Specifically, when in use, the two driving motors are started to drive the two lead screws to rotate forward and reverse, and the two movable plates move forward and backward along with the outside of the two lead screws. At the same time, the four sliders move forward and backward inside the four slide grooves, so that the two outer U-shaped plates can be adjusted forward and backward. When in use, it is convenient to correct the two clamped steel trusses in the forward and backward directions.

[0012] The up and down adjustment mechanism includes: a servo motor is fixedly installed on the front upper part of the inner part of the two outer U-shaped plates, the output ends of the two servo motors are fixedly connected to screw rods, one end of the two screw rods are rotatably connected to the inner rear end walls of the two outer U-shaped plates through bearings, the outer surfaces of the two screw rods are threadedly connected to two connecting blocks, the bottom ends of the four connecting blocks are fixedly connected to connecting rods, one ends of the four connecting rods are respectively hinged to the top ends of the two inner U-shaped plates, the front and rear end walls of the two inner U-shaped plates are fixedly connected to guide blocks, and the inner front and rear end walls of the two outer U-shaped plates are provided with guide grooves.

[0013] The two screw rods are both provided with threads with opposite directions.

[0014] The outsides of the four guide blocks are respectively connected to the insides of the four guide grooves in a sliding manner;

[0015] Specifically, two servo motors are started to drive the two screw rods forward and backward, and the four connecting blocks are all outside the two screw rods to move closer to or farther away from each other, thereby causing the four connecting rods to rotate, so that the two inner U-shaped plates are adjusted up and down. When in use, the two clamped steel trusses can be corrected in the up and down directions.

[0016] The fixing mechanism comprises: hydraulic cylinders are fixedly installed on the front and rear end walls of the two inner U-shaped plates, and clamping plates are fixedly connected to the telescopic ends of the two hydraulic cylinders.

[0017] The two clamping plates are symmetrically arranged.

[0018] Specifically, the two steel trusses to be installed are placed inside the two inner U-shaped plates respectively, and the four hydraulic cylinders are activated to stretch so that the four clamping plates can be brought close together, thereby fixing the two steel trusses to facilitate the correct installation work.

[0019] When using the device, first place the two steel trusses to be installed on the inner sides of the two inner U-shaped plates respectively, start the four hydraulic cylinders to stretch and drive the four clamping plates to approach, thereby fixing the two steel trusses, and then when correcting the two steel trusses in the front-to-back direction, start the two driving motors to drive the two lead screws to rotate forward and reverse, and the two moving plates move forward and backward along with the outside of the two lead screws, and at the same time, the four sliders all move forward and backward inside the four slide grooves, so that the two outer U-shaped plates can be adjusted forward and backward, and the two clamped steel trusses can be corrected in the front-to-back direction, and then when correcting the two steel trusses in the up-and-down direction, start the two servo motors to drive the two lead screws forward and reverse, and the four connecting blocks all approach or move away from each other outside the two lead screws, thereby causing the four connecting rods to rotate, so that the two inner U-shaped plates are adjusted up and down, and the two clamped steel trusses can be corrected in the up-and-down direction.

[0020] The beneficial effects of the utility model are: simple structure, easy to use, and greatly improved steel truss installation efficiency;

[0021] Solve the problem that large-span steel trusses cannot be hoisted as a whole and are generally installed in sections. During the section installation, the docking interfaces of each section of the steel truss cannot be guaranteed to be in the same straight line after installation, which is not convenient for correction.

[0022] The utility model provides a fixing mechanism, a front-and-rear adjustment mechanism and an up-and-down adjustment mechanism, and the two steel trusses to be installed are respectively placed on the inner sides of the two inner U-shaped plates. The cooperation of the hydraulic cylinder and the clamping plate can fix and clamp the two steel trusses, so as to facilitate the stable correction and installation work. After the two driving motors run forward and reverse, the two movable plates move forward and backward along with the outside of the two lead screws, so that the two outer U-shaped plates can be adjusted forward and backward, and the two clamped steel trusses can be corrected in the front-and-rear direction. After the two servo motors run forward and reverse, the four connecting blocks are all close to or away from each other outside the two lead screws, so that the two inner U-shaped plates are adjusted up and down, and when in use, the two clamped steel trusses can be corrected in the up and down direction. The correction is convenient, the installation efficiency is high, and the practicability is strong. After the correction is completed, the installation work of the two steel trusses can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model from a first viewing angle;

[0024] Figure 2 A schematic diagram of the structure of the second viewing angle of an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the connection between the inner and outer U-shaped plates and the slider in the embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the connection between the middle guide block and the guide groove in an embodiment of the utility model;

[0027] Among them, the accompanying drawings are marked as follows: 1. support plate; 2. pull rope; 3. front and rear adjustment mechanism; 301. fixed block; 302. screw; 303. drive motor; 304. movable plate; 305. opening; 306. slider; 307. slide groove; 4. outer U-shaped plate; 5. up and down adjustment mechanism; 501. servo motor; 502. screw; 503. connecting block; 504. connecting rod; 505. guide block; 506. guide groove; 6. inner U-shaped plate; 7. fixing mechanism; 701. hydraulic cylinder; 702. splint. DETAILED DESCRIPTION

[0028] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0029] See also Figure 1-4, an installation and correction device for a large-span steel truss, comprising a support plate 1, a pull rope 2 is arranged at the top of the support plate 1, the pull rope 2 is connected to a tower crane, front and rear adjustment mechanisms 3 are arranged on both sides of the top of the support plate 1, outer U-shaped plates 4 are arranged on both sides below the support plate 1, upper and lower adjustment mechanisms 5 are arranged on the inner sides of the two outer U-shaped plates 4, inner U-shaped plates 6 are arranged on the inner sides of the two outer U-shaped plates 4, and fixing mechanisms 7 are arranged inside the two inner U-shaped plates 6;

[0030] The front and rear adjustment mechanism 3 includes two pairs of fixed blocks 301 arranged on both sides of the top of the support plate 1, and two lead screws 302 are rotatably connected between the four fixed blocks 301 through bearings. A driving motor 303 is fixedly arranged on the two rear fixed blocks 301, and the output ends of the two driving motors 303 are fixedly connected to the two lead screws 302. The outer surfaces of the two lead screws 302 are threadedly connected to movable plates 304. Openings 305 are provided on both sides of the top of the support plate 1, and the bottom ends of the two movable plates 304 respectively penetrate the inner sides of the two openings 305 and extend to the bottom of the support plate 1 and are fixedly connected to the tops of the two outer U-shaped plates 4. Sliders 306 are provided on both sides of the middle of the tops of the two outer U-shaped plates 4, and two sliding grooves 307 are provided on both sides of the bottom end of the support plate 1.

[0031] The outsides of the four sliders 306 are all in sliding connection with the insides of the four slide slots 307;

[0032] Specifically, when in use, the two driving motors 303 are started to drive the two screws 302 to rotate forward and reverse, and the two movable plates 304 move forward and backward along with the outside of the two screws 302. At the same time, the four sliders 306 move forward and backward inside the four slide grooves 307, so that the two outer U-shaped plates 4 can be adjusted forward and backward. When in use, it is convenient to correct the two clamped steel trusses in the forward and backward directions.

[0033] The up and down adjustment mechanism 5 includes: a servo motor 501 is fixedly installed on the front upper part of the inner part of the two outer U-shaped plates 4, the output ends of the two servo motors 501 are fixedly connected with screw rods 502, one end of the two screw rods 502 are rotatably connected to the inner rear end walls of the two outer U-shaped plates 4 through bearings, the outer surfaces of the two screw rods 502 are threadedly connected with two connecting blocks 503, the bottom ends of the four connecting blocks 503 are fixedly connected with connecting rods 504, one ends of the four connecting rods 504 are respectively hinged to the top ends of the two inner U-shaped plates 6, the front and rear end walls of the two inner U-shaped plates 6 are fixedly connected with guide blocks 505, and the inner front and rear end walls of the two outer U-shaped plates 4 are provided with guide grooves 506.

[0034] The two screw rods 502 are both provided with threads with opposite directions.

[0035] The outsides of the four guide blocks 505 are respectively slidably connected to the insides of the four guide grooves 506;

[0036] Specifically, the two servo motors 501 are started to drive the two screw rods 502 to move forward and backward, and the four connecting blocks 503 are all outside the two screw rods 502 to move closer to or farther away from each other, thereby causing the four connecting rods 504 to rotate, so that the two inner U-shaped plates 6 are adjusted up and down, which can facilitate the correction of the two clamped steel trusses in the up and down directions when in use.

[0037] The fixing mechanism 7 comprises: hydraulic cylinders 701 are fixedly installed on the front and rear end walls of the two inner U-shaped plates 6 , and clamping plates 702 are fixedly connected to the telescopic ends of the two hydraulic cylinders 701 .

[0038] The two clamping plates 702 are symmetrically arranged.

[0039] Specifically, the two steel trusses to be installed are placed inside the two inner U-shaped plates 6 respectively, and the four hydraulic cylinders 701 are activated to stretch so that the four clamping plates 702 are close to each other, thereby fixing the two steel trusses to facilitate the correct installation work.

[0040] When using the device, first, the two steel trusses to be installed are placed on the inner sides of the two inner U-shaped plates 6 respectively, and the four hydraulic cylinders 701 are started to stretch and drive the four clamping plates 702 to move closer, so as to fix the two steel trusses. When the two steel trusses are corrected in the front-to-back direction, the two driving motors 303 are started to drive the two lead screws 302 to move forward and reversely, and the two movable plates 304 move forward and backward along with the outside of the two lead screws 302. At the same time, the four sliders 306 move forward and backward inside the four slide grooves 307, so that the two outer U-shaped plates 4 can be adjusted forward and backward, and the two clamped steel trusses can be corrected in the front-to-back direction. When the two steel trusses are corrected in the up-down direction, the two servo motors 501 are started to drive the two lead screws 502 to move forward and reversely, and the four connecting blocks 503 are all outside the two lead screws 502 to move closer or farther away from each other, so as to rotate the four connecting rods 504, so that the two inner U-shaped plates 6 are adjusted up and down, and the two clamped steel trusses can be corrected in the up-and-down direction.

[0041] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A large-span steel truss installation and correction device, characterized in that: It includes a support plate, a pull rope is provided at the top of the support plate, the pull rope is connected to the tower crane, front and rear adjustment mechanisms are provided on both sides of the top of the support plate, outer U-shaped plates are provided on both sides below the support plate, up and down adjustment mechanisms are provided on the upper inner sides of the two outer U-shaped plates, inner U-shaped plates are provided on the lower inner sides of the two outer U-shaped plates, and fixing mechanisms are provided inside the two inner U-shaped plates; The front and rear adjustment mechanism includes two pairs of fixed blocks arranged on both sides of the top end of the support plate, and two lead screws are rotatably connected between the four fixed blocks through bearings. A driving motor is fixedly arranged on the two rear fixed blocks, and the output ends of the two driving motors are fixedly connected to the two lead screws. The outer surfaces of the two lead screws are threadedly connected to movable plates, and openings are provided on both sides of the top end of the support plate. The bottom ends of the two movable plates respectively penetrate the inner sides of the two openings and extend to the bottom of the support plate and are fixedly connected to the top ends of the two outer U-shaped plates. Slide blocks are provided on both sides of the middle of the top ends of the two outer U-shaped plates, and two sliding grooves are provided on both sides of the bottom end of the support plate.

2. The installation and correction device for a large-span steel truss according to claim 1 is characterized in that: The outsides of the four sliding blocks are all in sliding connection with the insides of the four sliding grooves.

3. The installation and correction device for a large-span steel truss according to claim 2 is characterized in that: The up and down adjustment mechanism includes: a servo motor is fixedly installed on the front upper part of the inner part of the two outer U-shaped plates, the output ends of the two servo motors are fixedly connected to screw rods, one end of the two screw rods are rotatably connected to the inner rear end walls of the two outer U-shaped plates through bearings, the outer surfaces of the two screw rods are threadedly connected to two connecting blocks, the bottom ends of the four connecting blocks are fixedly connected to connecting rods, one ends of the four connecting rods are respectively hinged to the top ends of the two inner U-shaped plates, the front and rear end walls of the two inner U-shaped plates are fixedly connected to guide blocks, and the inner front and rear end walls of the two outer U-shaped plates are provided with guide grooves.

4. The installation and correction device for a large-span steel truss according to claim 3 is characterized in that: The two screw rods are both provided with threads with opposite directions.

5. The installation and correction device for a large-span steel truss according to claim 4 is characterized in that: The outsides of the four guide blocks are respectively connected to the insides of the four guide grooves in a sliding manner.

6. The installation and correction device for a large-span steel truss according to claim 5 is characterized in that: The fixing mechanism comprises: hydraulic cylinders are fixedly installed on the front and rear end walls of the two inner U-shaped plates, and clamping plates are fixedly connected to the telescopic ends of the two hydraulic cylinders.

7. The installation and correction device for a large-span steel truss according to claim 6 is characterized in that: The two clamping plates are symmetrically arranged.

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