Hoisting device for steel structure column of assembly type transformer substation

Abstract

The invention relates to a hoisting device for a section steel structure column of an assembly type transformer substation, which is characterized by comprising clamping jaw plates, a hinge shaft, an angle adjusting screw rod, a middle supporting rod and a lower supporting rod, and the front end and the rear end of the hinge shaft are respectively provided with two clamping jaw plates which are hinged left and right; a middle supporting rod and a lower supporting rod are connected to the middle and the lower portion between the two clamping jaw plates which are opposite in the front-back direction respectively, inner threaded holes with opposite threads are formed in the middle of the two middle supporting rods, angle adjusting screw rods are installed in the inner threaded holes in a penetrating mode, and adjusting handles are installed at the ends of the angle adjusting screw rods. The angle adjusting screw rod is driven to rotate through the adjusting handle, and then angle adjustment of the clamping jaw plates hinged to each other in the left-right direction is achieved. The hoisting device for the steel structural column of the fabricated transformer substation can be quickly mounted and dismounted, and the working efficiency is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power engineering construction and relates to a hoisting device for a steel structure column of an assembled substation. Background Art

[0002] The steel structure column of the assembled substation is generally composed of a steel column top plate, a steel column flange plate, a steel column web plate and a beam-column connection stiffening plate. Steel column flange plates are symmetrically arranged on both sides of the bottom of the steel column top plate, a steel column web plate perpendicular to the two steel column flange plates is arranged between the two steel column flange plates, and beam-column connection stiffening plates are horizontally arranged at the upper and lower ends between the steel column web plate and the two steel column flange plates.

[0003] At present, there are generally two methods for lifting traditional steel structure columns. One is to temporarily use shackles for lifting at the openings of the connecting bolts on the top plate of the steel column of the steel structure column; the other is to open holes in the top plate of the steel column of the steel structure column in advance, and install temporary lifting rings for subsequent lifting.

[0004] The above two traditional construction methods and devices are time-consuming, and the shackles or temporary lifting rings are sheared during the lifting process, which poses a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and provide a lifting device for the steel structure column of an assembled substation. This device can be temporarily installed on the top of the steel structure column, which can quickly disassemble and improve work efficiency while reducing safety risks and facilitating construction.

[0006] The present invention solves the technical problem by the following technical solutions:

[0007] A lifting device for a prefabricated substation steel structure column, characterized in that it includes a clamping plate, a hinged shaft, an angle adjustment screw, a middle strut and a lower strut, two left and right hinged clamping plates are installed at the front and rear ends of the hinged shaft, the middle and lower parts of the two front and rear opposite clamping plates are respectively connected, internal threaded holes with opposite threads are provided in the middle of the two middle struts, angle adjustment screws are passed through the internal threaded holes, and an adjustment handle is installed at the end of the angle adjustment screw, and the angle adjustment screw is driven to rotate by the adjustment handle, thereby realizing the angle adjustment of the clamping plates hinged in the left and right directions.

[0008] Moreover, the clamping claw plate is an integrally formed steel plate structure, including a connecting part and a hooking part. The hooking part is provided below the connecting part, a hinge hole is provided at the top of the connecting part, a middle support rod connecting hole is provided in the middle of the connecting part, and lower support rod connecting holes are evenly spaced on the hooking part.

[0009] Moreover, it also includes a tightening sleeve. Threaded columns are fixedly installed on the outer sides of the clamping claw plates at both ends of each lower support rod, and a tightening sleeve that is top-connected to the flange plate of the steel column is threadedly installed on the threaded column.

[0010] Moreover, a hoisting sleeve is sleeved on the hinged shaft, and a hoisting groove is arranged on the hoisting sleeve.

[0011] The advantages and beneficial effects of the present invention are:

[0012] The hoisting device of the steel column of the assembled substation can be quickly installed on the top of the steel column to provide a stable lifting point for hoisting. The hooking part hooks the top plate of the steel column at the top of the steel column. The middle part of the connecting part adjusts the clamping angle of the hoisting device through the angle adjustment screw to ensure that it will not get loose during the hoisting process. The hoisting groove can be directly used for lifting hooks by a crane. The hoisting device of the steel column of the assembled substation can be quickly installed and disassembled, which significantly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is a side view of the present invention.

[0015] Description of Reference Numerals

[0016] 1-connecting part, 2-angle adjustment screw, 3-adjusting handle, 4-hook part, 5-beam-column connection stiffening plate, 6-steel column flange plate, 7-steel column web, 8-steel column top plate, 9-lifting groove, 10-lifting sleeve, 11-clamping claw plate, 12-middle support rod, 13-lower support rod, 14-threaded column, 15-tightening sleeve. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0018] A lifting device for a prefabricated substation steel structure column, the innovation of which lies in: comprising a clamping plate 11, a hinged shaft, an angle adjustment screw 2, a middle support rod 12 and a lower support rod 13, two left and right hinged clamping plates are installed at the front and rear ends of the hinged shaft, the middle and lower parts of the two front and rear opposite clamping plates are respectively connected, internal threaded holes with opposite threads are provided in the middle of the two middle support rods, angle adjustment screws are passed through the internal threaded holes, and an adjustment handle 3 is installed at the end of the angle adjustment screw, and the angle adjustment screw is driven to rotate by the adjustment handle, thereby realizing the angle adjustment of the clamping plates hinged in the left and right directions.

[0019] The clamping claw plate is a structure integrally formed of steel plates, including a connecting portion 1 and a hooking portion 4, a hooking portion is provided below the connecting portion, a hinged hole is provided at the top of the connecting portion, a middle support rod connecting hole is provided in the middle of the connecting portion, and lower support rod connecting holes are evenly spaced on the hooking portion.

[0020] It also includes a tightening sleeve. A threaded column 14 is fixedly installed on the outer side of the clamping claw plates at both ends of each lower support rod, and a tightening sleeve 15 that is connected to the flange plate of the steel column is threadedly installed on the threaded column.

[0021] A lifting sleeve 10 is sleeved on the hinged shaft, and a lifting groove 9 is provided on the lifting sleeve.

[0022] The assembled substation steel structure column is generally composed of a steel column top plate 8, a steel column flange plate 6, a steel column web plate 7 and a beam-column connection stiffening plate 5. Steel column flange plates are symmetrically arranged on both sides of the bottom of the steel column top plate, a steel column web plate perpendicular to the two steel column flange plates is arranged between the two steel column flange plates, and beam-column connection stiffening plates are horizontally arranged at the upper and lower ends between the steel column web plate and the two steel column flange plates.

[0023] When in use, first hook the clamping claw plate of the device onto the top plate of the steel column, then tighten the clamping claw plates hinged to each other by adjusting the handle so that they are stably clamped on the steel structure column, and then connect the lifting ring of the crane to the lifting groove to carry out the lifting work.

[0024] The steel column of the substation is generally about 11.5m long and weighs about 5 tons. The lifting device of the steel structure column of the prefabricated substation is considered according to the maximum lifting weight of 10 tons. The thickness of the clamping plate of the lifting device of the steel structure column of the prefabricated substation is 20mm, and Q345 steel plate is used. The lifting device of the steel structure column of the prefabricated substation mainly considers whether the shear bearing capacity of the clamping plate and the screw of the lifting device meets the lifting requirements.

[0025] Design value of steel shear strength fv = 170.00MPa

[0026] 1. Cross-sectional property verification: the thickness of the steel plate of the clamping plate of the lifting device is d=20mm, and the fixing screws of the lifting device are divided into two types: do=12mm and do=30mm; the minimum net distance between the bolt hole and the edge of the lifting device is do. They are 12mm and 30mm respectively.

[0027] 2. Shear bearing capacity calculation

[0028] Shear strength verification of steel plate of sling

[0029] V=|100.00|×1000.00=100000.00N

[0030] According to Article 6.1.3 of the steel structure standard

[0031]

[0032] Meet the shear strength requirements

[0033] Shear strength verification of the screw rod for fixing the sling

[0034] The smallest fixing screw of the sling is a rivet with a diameter of 12mm, and the outer wall thickness of the support rod is 6mm, which is welded to the steel plate of the sling. The shear bearing capacity of each rivet is

[0035]

[0036] =112×140=15680N

[0037] Shear bearing capacity of external bracing

[0038] The total shear bearing capacity of each rivet is

[0039] 15680×2+37366×2=106092>100000N

[0040] The shear strength of rivets meets the requirements.

[0041] Shear strength verification of fastening screws for slings

[0042]

[0043] The shear bearing capacity is met.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A hoisting device for a prefabricated substation steel structure column, characterized in that: It includes a clamping claw plate, a hinged shaft, an angle adjustment screw, a middle support rod and a lower support rod. Two left and right hinged clamping claw plates are installed at the front and rear ends of the hinged shaft. The middle and lower parts of the two front and rear opposite clamping claw plates are respectively connected. Internal threaded holes with opposite threads are arranged in the middle of the two middle support rods. An angle adjustment screw is passed through the internal threaded holes. An adjustment handle is installed at the end of the angle adjustment screw. The angle adjustment screw is driven to rotate by the adjustment handle, thereby realizing the angle adjustment of the clamping claw plates hinged in the left and right directions.

2. The hoisting device for the assembled substation steel structure column according to claim 1 is characterized in that: The clamping claw plate is a structure integrally formed of steel plates, including a connecting part and a hooking part. The hooking part is provided below the connecting part, a hinged hole is provided at the top of the connecting part, a middle support rod connecting hole is provided in the middle of the connecting part, and lower support rod connecting holes are evenly spaced on the hooking part.

3. The hoisting device for the assembled substation steel structure column according to claim 1 is characterized in that: It also includes a tightening sleeve. Threaded columns are fixedly installed on the outer sides of the clamping claw plates at both ends of each lower support rod, and a tightening sleeve that is top-connected to the flange plate of the steel column is threadedly installed on the threaded column.

4. The hoisting device for the assembled substation steel structure column according to claim 1 is characterized in that: A hoisting sleeve is sleeved on the hinged shaft, and a hoisting groove is arranged on the hoisting sleeve.

Images