Hoisting device for steel frame cross beam of boiler of million unit

Abstract

The utility model discloses a million unit boiler steel frame cross beam hoisting device which comprises a bottom frame, supporting legs and a portal frame, the supporting legs are arranged at the bottom of the bottom frame, first guide wheels are arranged on the two sides of the top face of the bottom frame respectively, the portal frame is arranged at the left end of the bottom frame, and a lifting mechanism is arranged at the top of the portal frame. The lifting mechanism is connected with a lifting plate through a rope, pull ropes are arranged at the two ends of the right side face of the portal frame correspondingly, and second guide wheels are arranged at the upper ends and the lower ends of the pull ropes correspondingly. The first guide wheels are arranged on the upper portion of the base to facilitate movement of the cross beams, the cross beams can be rapidly pre-installed in cooperation with the lifting mechanism, the twelve second through holes are formed in the bottom of the lifting plate, a plurality of cross beams can be lifted at a time, the construction period is shortened, the working efficiency is improved, use is convenient, operation is easy, and cost is low. The popularization is easy.

Description

Technical Field

[0001] The utility model relates to a hoisting component, in particular to a hoisting device for boiler steel frame cross beams of a million-kilowatt unit, belonging to the technical field of equipment hoisting. Background Technique

[0002] During the process of power plant foundation construction, the installation of the steel frame occupies a large part of the installation time. During the installation of the steel frame, a large number of steel frame cross beams need to be hoisted. During the installation of this million-kilowatt unit, there are approximately 1743 steel frame cross beams. Hoisting the steel frame cross beams requires a 100t tower crane. The 100t tower crane is 145m high, and it takes about 40 minutes for the 100t tower crane to lift and retract the hook once. If each time a steel frame cross beam is hoisted, at most 12 steel frame cross beams can be hoisted in a day; just hoisting the steel frame cross beams alone requires 145 days, nearly 5 months, while the overall construction period for the on-site steel frame installation is only 5 months. Therefore, it has a great impact on the on-site construction period. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a hoisting device for boiler steel frame cross beams of a million-kilowatt unit, which can hoist multiple steel frame cross beams at one time, reduce the installation time, lower the installation cost, and is convenient to use and simple to operate.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] A hoisting device for boiler steel frame cross beams of a million-kilowatt unit includes a chassis, legs, and a gantry. The legs are provided at the bottom of the chassis. First guide wheels are respectively provided on both sides of the top surface of the chassis. A gantry is provided at the left end of the chassis. A lifting mechanism is provided at the top of the gantry. The lifting mechanism is connected to a hanging plate through a rope. Pulling ropes are respectively provided on both sides of the right end face of the gantry. Second guide wheels are respectively provided at the upper and lower ends of the pulling ropes.

[0006] A connecting block is provided on the right side of the top of the gantry. A lifting mechanism is provided on the connecting block. The lifting mechanism is composed of a wire winding frame and a motor. The rotating shaft of the motor is fixedly connected to the rotating shaft of the wire winding frame. A rectangular through hole is dug on the connecting block below the wire winding frame. A rope is wound on the wire winding frame. The rope passes through the rectangular through hole, and a hook is provided at the end of the rope.

[0007] The hanging plate is processed from a 10mm thick steel plate. A first through hole is provided at the center of the upper part of the hanging plate. A second through hole is provided at the lower part of the hanging plate. There are twelve second through holes, which are evenly distributed in a row at the lower part of the hanging plate.

[0008] Both ends of the draw rope are respectively provided with struts, and the struts are fixedly connected to the gantry.

[0009] On both sides of the top of the chassis, displacement grooves are respectively provided, and first guide wheels are arranged in the displacement grooves.

[0010] The width of the gantry is greater than the width of the chassis.

[0011] The positive and beneficial effects of the present utility model are as follows:

[0012] 1. By providing twelve second through holes at the bottom of the hanging plate, the present utility model can hoist six steel beam crossbeams at one time. The hoisting time has changed from the original 40 minutes per beam to the current average of 4 minutes per beam, greatly reducing the construction time and improving the work efficiency.

[0013] 2. By providing first guide wheels at the top of the chassis, the present utility model facilitates the movement of the crossbeam on the chassis. By providing a gantry at the left end of the chassis and a lifting mechanism at the top of the gantry, it is convenient to pre-install the crossbeam and the hanging plate, enabling the six crossbeams to be at different heights, which is convenient to use and simple to operate.

[0014] 3. By providing draw ropes on both sides of the gantry, when in use, the draw ropes are in a tightened state, avoiding the situation where the crossbeam collides with the gantry during the pre-installation process and ensuring the stability of the pre-installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the hanging plate hoisting of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the chassis of the present utility model;

[0018] Among them: 1 - chassis, 2 - legs, 3 - displacement groove, 4 - first guide wheel, 5 - gantry, 6 - second guide wheel, 7 - strut, 8 - draw rope, 9 - connecting block, 10 - rectangular through hole, 11 - wire winding frame, 12 - motor, 13 - hanging plate, 14 - first through hole, 15 - second through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further explains and illustrates the present utility model with reference to the drawings:

[0020] Embodiment, refer to Figures 1 - 3, A hoisting device for the boiler steel frame crossbeam of a million-unit unit, including a chassis 1, legs 2 and a gantry 5. Legs 2 are provided at the bottom of the chassis 1. First guide wheels 4 are respectively provided on both sides of the top surface of the chassis 1. A gantry 5 is provided at the left end of the chassis 1. A lifting mechanism is provided at the top of the gantry 5. The lifting mechanism is connected to a hanging plate 13 by a rope. Pulling ropes 8 are respectively provided on both sides of the right end surface of the gantry 5. Second guide wheels 6 are respectively provided at the upper and lower ends of the pulling ropes 8.

[0021] A connecting block 9 is provided on the right side of the top of the gantry 5. A lifting mechanism is provided on the connecting block 9. The lifting mechanism is composed of a wire winding frame 11 and a motor 12. The rotating shaft of the motor 12 is fixedly connected to the rotating shaft of the wire winding frame 11. A rectangular through hole 10 is dug on the connecting block 9 below the wire winding frame 11. A rope is wound around the wire winding frame 11. The rope passes through the rectangular through hole 10, and a hook is provided at the end of the rope.

[0022] The hanging plate 13 is processed from a 10-mm-thick steel plate. A first through hole 14 is provided at the center of the upper part of the hanging plate 13. A second through hole 15 is provided at the lower part of the hanging plate 13. There are twelve second through holes 15, which are evenly distributed in a row at the lower part of the hanging plate 13.

[0023] Columns 7 are respectively provided at both ends of the pulling rope 8. The columns 7 are fixedly connected to the gantry 5.

[0024] Displacement grooves 3 are respectively provided on both sides of the top of the chassis 1. First guide wheels 4 are provided in the displacement grooves 3.

[0025] The width of the gantry 5 is greater than the width of the chassis 1.

[0026] In the above description, the lifting mechanism is located at the middle position of the top of the gantry. A rotating shaft is rotatably connected between the wire winding frames, and a rope is provided outside the rotating shaft. The rotating shaft between the wire winding frames is fixedly connected to the rotating shaft of the motor. Under the action of the motor, the hanging plate can be pulled up by the rope, facilitating the staff to adjust the position of the crossbeam.

[0027] In the above description, the length of the crossbeam is greater than the width of the gantry.

[0028] In the above description, by providing second guide wheels at both ends of the pulling rope, and the second guide wheels are located at the top and bottom of the gantry, it is convenient for the crossbeam to move up along the gantry.

[0029] In the above description, the diameter of the first through hole is 50 mm, the distance from the top is 150 mm, and the distance from both sides is 250 mm; the diameter of the second through hole is 20 mm, and the distance from the bottom of the hanging plate to the second through hole is 40 mm.

[0030] Working principle:

[0031] During construction, place the cross beam on the chassis, horizontally move the cross beam through the first wire pulley, then use the hook on the lifting mechanism to hook onto the hanging plate, and then hoist and fix the cross beam. For each fixed cross beam, the height of the hanging plate needs to be raised. After all the cross beams are pre-installed, lower the hanging plate using the lifting mechanism, then remove the hanging plate from the lifting mechanism and connect it to the crane, and finally carry out one-time hoisting construction.

[0032] When fixing the cross beam, pass a rope through two through holes symmetrically distributed on the hanging plate, and fix the end of the rope to the end of the cross beam.

[0033] The utility model can hoist six steel frame cross beams at one time, changing from hoisting one at a time to hoisting six at a time now. The hoisting time changes from the original 40 minutes per one to the current average of 4 minutes per one, greatly reducing the construction time, improving the work efficiency, being convenient to use, simple to operate, and easy to promote.

Claims

1. A steel frame crossbeam hoisting device for a million-unit boiler, comprising a base frame (1), legs (2) and a gantry (5), characterized in that: The bottom of the base frame (1) is provided with a support leg (2), and first guide wheels (4) are respectively provided on both sides of the top surface of the base frame (1). A gantry (5) is provided at the left end of the base frame (1), and a lifting mechanism is provided on the top of the gantry (5). The lifting mechanism is connected to a hanging plate (13) via a rope. Pull ropes (8) are respectively provided at both ends of the right side surface of the gantry (5), and second guide wheels (6) are respectively provided at the upper and lower ends of the pull ropes (8).

2. The steel frame crossbeam hoisting device for a million-unit boiler according to claim 1 is characterized in that: A connecting block (9) is provided on the right side of the top of the gantry (5), and a lifting mechanism is provided on the connecting block (9), the lifting mechanism comprising a winding frame (11) and a motor (12), the rotating shaft of the motor (12) being fixedly connected to the rotating shaft of the winding frame (11), a rectangular through hole (10) being provided on the connecting block (9) below the winding frame (11), a rope being wound on the winding frame (11), the rope passing through the rectangular through hole (10), and a hook being provided at the end of the rope.

3. The steel frame crossbeam hoisting device for a million-unit boiler according to claim 1 is characterized in that: The hanging plate (13) is made of a 10 mm thick steel plate. A first through hole (14) is provided at the center of the upper portion of the hanging plate (13). A second through hole (15) is provided at the lower portion of the hanging plate (13). There are twelve second through holes (15) which are evenly distributed in a row at the lower portion of the hanging plate (13).

4. The steel frame crossbeam hoisting device for a million-unit boiler according to claim 1 is characterized in that: Support pillars (7) are respectively provided at both ends of the pull rope (8), and the support pillars (7) are fixedly connected to the gantry (5).

5. The steel frame crossbeam hoisting device for a million-unit boiler according to claim 1 is characterized in that: Displacement grooves (3) are respectively arranged on both sides of the top of the base frame (1), and first guide wheels (4) are arranged in the displacement grooves (3).

6. The steel frame crossbeam hoisting device for a million-unit boiler according to claim 1 is characterized by: The width of the gantry (5) is greater than the width of the base frame (1).

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