CN113756362A

CN113756362A - Construction method for outdoor transformer substation

Info

Publication number: CN113756362A
Application number: CN202111086390.5A
Authority: CN
Inventors: 何宇辰; 胡晨; 张慧洁; 盛金马; 靳幸福; 王灿; 刘超; 梅晓晨; 卫冕
Original assignee: State Grid Anhui Zhongxing Electric Power Design Institute Co ltd; Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Current assignee: State Grid Anhui Zhongxing Electric Power Design Institute Co ltd; Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2021-12-07
Anticipated expiration: 2041-09-16
Also published as: CN113756362B

Abstract

The invention relates to a construction method for constructing an outdoor transformer substation, in particular to a special lifting appliance for a GIS (gas insulated switchgear) assembled foundation member, which comprises a suspension bracket, a lifting arm group mechanism, a side stay bar assembly and a lifting hook mechanism, wherein the suspension bracket comprises a bracket body and a bracket body; when the GIS assembly type foundation is assembled, the lifting device reduces the labor input, solves the inconvenience of manual operation, can realize automatic hook hooking and hook unloading and is beneficial to high-efficiency lifting operation in the lifting process of the prefabricated part through the special lifting device provided by the invention; in addition, the whole lifting appliance is more stable and reliable in structure, not prone to being affected by severe outdoor weather such as strong wind and the like, better in balance, capable of enhancing the reliability of the lifting appliance in lifting and greatly reducing potential safety hazards in lifting high-altitude operation.

Description

Construction method for outdoor transformer substation

Technical Field

The invention relates to the technical field of construction of transformer substations, and particularly provides a construction method for constructing an outdoor transformer substation.

Background

In the construction and assembly of a substation, a GIS is an important switchgear in a main control room. The GIS is called gas insulated metal enclosed switchgear, which is a primary device except for a transformer: the circuit breaker, the isolating switch, the grounding switch, the lightning arrester, the voltage transformer, the current transformer, the incoming and outgoing line sleeve, the cable terminal, the bus and the like are organically connected into a whole through optimized design, and are sealed in the metal shell, and the closed combined electrical appliance is formed by filling SF6 gas as an arc extinguishing and insulating medium.

The GIS equipment foundation is an installation foundation for bearing and placing GIS equipment, and the common foundation forms of the GIS equipment foundation include a thick plate type foundation, a beam type raft foundation, a buttress type raft foundation, a box type foundation and the like, but the problems that the size of the GIS foundation is large, the construction period is long and cracks are not easy to control cannot be solved no matter which foundation form is adopted. Therefore, in order to solve many problems of the conventional GIS equipment foundation, a study on a GIS assembly type foundation is proposed, the GIS assembly type foundation is composed of a plurality of prefabricated box type foundations assembled in a splicing mode and laminated slabs sealed at box openings at the top ends of the prefabricated box type foundations, the prefabricated box type foundations are fixedly connected through special bolt connecting pieces and are connected in series through grouting behind walls, the laminated slabs and the prefabricated box type foundations are closed through a cast-in-place structure, a three-dimensional structure of the prefabricated box type foundations and the laminated slabs is shown in fig. 10 and 11, and a partial assembly combination structure of the GIS assembly type foundation is shown in fig. 12.

In the assembly construction process to transformer substation GIS assembled foundation, prefabricated box basis and superimposed sheet all need carry out the handling equipment butt joint through lifting by crane, and the hoist that adopts is basic for having the hawser structure of lifting hook when the handling, and during actual handling operation, adopt traditional simple hoist handling and obviously have following several problems:

1) in the handling process, in order to improve handling efficiency, often need many people to cooperate and accomplish, and no matter before lifting by crane or after accomplishing the handling, all need through the manual work with the lifting hook catch fabricated foundation member or with the lifting hook from which take off, the manual work volume is great, and take off the lifting hook operation inconvenient from the fabricated foundation member after assembling.

2) When adopting traditional simple hoist handling, need the equilibrium of artifical adjustment lifting, and the stability of traditional hoist is not good, especially when strong wind weather operation, the hoist has increased unstable factor to the reliability of handling then because of stability not good produces obvious rocking, has great construction potential safety hazard when handling high altitude construction.

Disclosure of Invention

In order to solve the above problems, the present invention provides an outdoor substation construction method for solving the above problems mentioned in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a construction method for an outdoor transformer substation specifically comprises the following steps:

s1, cleaning weeds and garbage on the ground to be constructed, primarily leveling the ground, and then positioning a defense line according to the requirements of a construction drawing; carrying out earth excavation at the position of the ground foundation pit determined after positioning and paying off until the position is excavated to the designed depth, and carrying out bottom cleaning and trimming arrangement on the excavated foundation pit;

s2, after the excavated foundation pit passes the acceptance check, performing concrete cushion layer construction on the foundation pit, ensuring that the thickness and the strength of the concrete cushion layer meet the design construction requirements, and then performing maintenance treatment on the concrete cushion layer after the pouring is completed;

s3, after the maintenance and acceptance of the concrete cushion of the foundation pit pass, hoisting the prefabricated box type foundations which are transported to the ground in advance to the plane of the concrete cushion of the foundation pit one by using a hoisting device through a GIS (geographic information System) assembly type foundation member special hoisting tool, and accurately assembling all the prefabricated box type foundations according to the construction design requirements through position adjustment in the hoisting process;

s4, performing bolt fastening connection between the prefabricated box type foundations, and then performing wall back grouting to enable all the prefabricated box type foundations to be connected into a whole;

s5, hoisting the plurality of laminated slabs to the top end of each prefabricated box type foundation one by using a GIS assembly type foundation member special hoisting tool through hoisting equipment again to seal the top end of each prefabricated box type foundation, and then binding steel bars between each laminated slab and the prefabricated box type foundation at the opposite position;

s6, mounting a support pouring mold at the binding position of the laminated slab and the steel bars of the prefabricated box type foundation, and then pouring and forming to enable the laminated slab and the prefabricated box type foundation to be connected into a whole;

s7, after the pouring, maintenance and acceptance, backfilling the foundation with backfill, tamping the backfilled ground, and ensuring the backfilled ground to be backfilled to the designed height;

the process of constructing the foundation of the transformer substation by adopting the outdoor transformer substation construction method of the steps S1-S7 also specifically relates to the special lifting appliance for the GIS assembly type foundation member, which comprises a suspension bracket, a lifting arm group mechanism, a side stay rod assembly and a lifting hook mechanism; wherein: the suspension arm group mechanism comprises four suspension arms which can be folded and unfolded, and the four suspension arms are hinged to the bottom end of the suspension frame and are distributed around the circumference of the suspension frame at equal intervals; the two sides of each suspension arm in the length direction are provided with the side stay rod assemblies in mirror symmetry; the bottom end surface of each suspension arm is provided with the lifting hook mechanism at a position close to the front end;

the lifting hook mechanism comprises an electric push rod fixedly arranged on the bottom end face of the lifting arm, a sliding rail fixed on the bottom end face of the lifting arm, a sliding seat in sliding fit with the sliding rail, a lifting hook and a tension spring; electric putter's output direction is followed the length direction of davit, the direction of slide rail is followed the length direction of davit, the sliding seat with electric putter's output fixed connection, the lifting hook articulates the bottom of sliding seat, extension spring one end articulates on the sliding seat, the extension spring other end is fixed on the lifting hook, the lifting hook is in the inclined state under the control of extension spring, just the incline direction of lifting hook is partial to davit length direction's front end one side.

Preferably, the boom set mechanism further comprises a deployment driving motor fixedly mounted at the bottom end of the suspension frame, a lead screw vertically and rotatably mounted on the suspension frame, a cross stroke block and four pull rods, wherein the cross stroke block is mounted on the lead screw in a threaded fit manner; the lead screw is fixedly connected with an output shaft of the unfolding driving motor, and the cross stroke frame is vertically matched with the suspension frame in a sliding manner; the four suspension arms and the cross-shaped travel block are hinged and connected through two ends of the pull rod.

Preferably, the side stay bar assembly comprises a hinged end hinged on the side wall of the suspension arm, a screw rod with one end rotatably connected with the hinged end and a threaded sleeve rod in threaded fit connection with the other end of the screw rod; the hinged position of the hinged end head is close to the front end of the suspension arm, and when the suspension arm is in a horizontal state, the axial direction of the screw rod is in the horizontal direction; the front end of spiro union pole is provided with two joint heads, the cross-section of joint head is right angle fan ring-type, two the joint head centers on be 180 interval distribution in the circumference of spiro union pole center pin, two the interval is formed with two joint breachs between the joint head.

Preferably, the suspension bracket comprises a guide bracket and a hinged seat, the guide bracket is provided with four upright columns which are uniformly distributed on the circumference, the four upright columns are fixedly connected to the top end of the hinged seat, and a cross gap is formed between the four upright columns; the unfolding driving motor is fixedly installed on the bottom end face of the hinge seat, the cross stroke block is in sliding fit with the cross gap, and the suspension arm is hinged to the hinge seat.

Preferably, the side stay bar assembly further comprises a plug connector arranged on the side wall of the suspension arm, the plug connector is cylindrical and axially extends along the length direction of the suspension arm, and when the screw rod is rotated to enable the screw sleeve rod to axially coincide with the plug connector, the plug connector can be inserted between the two clamping connectors.

Preferably, the top end of the guide frame is vertically and rotatably provided with a hanging ring.

Preferably, a cylindrical rubber positioning block is arranged at the center of the top end of the hinge seat, the lead screw penetrates through the rubber positioning block, and when the cross-shaped stroke block descends to be in contact with the rubber positioning block, the suspension arm is in a horizontal state.

Preferably, the hinged seat is provided with four reinforcing ribs which are fixedly connected with the four upright posts in a one-to-one correspondence manner.

The technical scheme has the following advantages or beneficial effects: 1. the invention provides a construction method for building an outdoor transformer substation, and particularly relates to a special lifting appliance for a GIS (geographic information System) fabricated foundation component, wherein when the GIS fabricated foundation is fabricated, the lifting appliance reduces the labor input, solves the inconvenience of manual operation, can realize automatic hooking and unhooking, and is beneficial to high-efficiency lifting operation in the lifting process of prefabricated components by the special lifting appliance provided by the invention; in addition, the whole lifting appliance is more stable and reliable in structure, not prone to being affected by severe outdoor weather such as strong wind and the like, better in balance, capable of enhancing the reliability of the lifting appliance in lifting and greatly reducing potential safety hazards in lifting high-altitude operation.

2. The invention provides a construction method for constructing an outdoor transformer substation, and particularly relates to a special lifting appliance for a GIS (gas insulated switchgear) assembled foundation member.

3. The invention provides an outdoor transformer substation construction method, and particularly relates to a GIS (geographic information System) fabricated foundation member special lifting appliance, wherein side stay rod assemblies are arranged in the lifting appliance, and during lifting operation, the side stay rod assemblies are meshed and butted pairwise, so that bridging and series connection of four lifting arms are realized, the tensile strength of each lifting arm is enhanced, and the stability and reliability of the whole lifting appliance are enhanced.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a flow chart of a method for constructing an outdoor substation according to the present invention.

Fig. 2 is a schematic perspective view of a GIS-equipped spreader for base members according to the present invention.

Fig. 3 is a schematic perspective view of a GIS-equipped spreader for base members from another perspective.

Fig. 4 is a partially enlarged schematic view at a in fig. 3.

Fig. 5 is a bottom view of a GIS fabricated base member spreader according to the present invention.

Fig. 6 is a top view of a GIS assembled base member spreader provided in the present invention.

Fig. 7 is a sectional view of B-B in fig. 6.

Fig. 8 is a partially enlarged schematic view at C in fig. 7.

Fig. 9 is a perspective view of the screw rod.

FIG. 10 is a schematic view showing the structure of a prefabricated box-type foundation.

Fig. 11 is a schematic structural view of the laminated plate.

Fig. 12 is a schematic view of a partial assembly structure of a GIS assembly base.

In the figure: 1. a suspension frame; 11. a guide frame; 111. a column; 112. a cross gap; 113. a hoisting ring; 12. a hinged seat; 121. a rubber positioning block; 122. reinforcing ribs; 2. a boom set mechanism; 21. unfolding the driving motor; 22. a lead screw; 23. a cross stroke block; 24. a suspension arm; 25. a pull rod; 3. a side stay assembly; 31. a hinged end; 32. a screw; 33. a screw sleeve rod; 331. a clamping head; 332. clamping the notch; 34. a plug-in connector; 4. a hook mechanism; 41. an electric push rod; 42. a slide rail; 43. a sliding seat; 44. a hook; 45. a tension spring; 5. prefabricating a box type foundation; 6. a laminated plate.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

As shown in fig. 1, a construction method for an outdoor transformer substation specifically includes the following steps:

s3, after the concrete cushion of the foundation pit passes maintenance and acceptance, hoisting the prefabricated box type foundations 5 which are transported to the ground in advance to the plane of the concrete cushion of the foundation pit one by using a hoisting device through a GIS (geographic information System) assembly type foundation member special hoisting tool, and accurately assembling all the prefabricated box type foundations 5 according to construction design requirements through position adjustment in the hoisting process;

s4, performing bolt fastening connection between the prefabricated box type foundations 5, and then performing wall back grouting to connect all the prefabricated box type foundations 5 into a whole;

s5, hoisting the plurality of laminated slabs 6 to the top end of each prefabricated box type foundation 5 one by one through hoisting equipment by using a GIS assembly type foundation member special hoisting tool again, sealing the top end of each prefabricated box type foundation 5, and binding steel bars between each laminated slab 6 and the prefabricated box type foundation 5 at the opposite position;

s6, mounting a support pouring mold at the steel bar binding position of the laminated slab 6 and the prefabricated box type foundation 5, and then pouring and forming to enable the laminated slab 6 and the prefabricated box type foundation 5 to be connected into a whole;

as shown in fig. 2 and 3, in the process of constructing the foundation of the substation by using the outdoor substation construction method of steps S1-S7, the special lifting appliance for the GIS-equipped foundation member further comprises a suspension bracket 1, a boom group mechanism 2, a side stay rod assembly 3 and a lifting hook mechanism 4.

As shown in fig. 10, 11 and 12, the GIS fabricated foundation main body is composed of a prefabricated box type foundation 5 and a laminated slab 6, the prefabricated box type foundation 5 and the laminated slab 6 are both prefabricated components manufactured in a factory in a standardized manner, and in order to facilitate hoisting of the prefabricated components by the GIS fabricated foundation special hoisting tool provided by the invention, embedded hoisting rings are welded or bound at appropriate positions in the steel bar frameworks of the prefabricated box type foundation 5 and the laminated slab 6, and hoisting is performed by hooking the embedded hoisting rings during hoisting.

As shown in fig. 2 and 7, the suspension bracket 1 comprises a guide bracket 11 and a hinged base 12, a lifting ring 113 is vertically and rotatably arranged at the top end of the guide bracket 11, and the lifting end of the lifting device is hooked and locked on the lifting ring 113, so that the whole lifting appliance can be lifted; the guide frame 11 is provided with four upright posts 111 which are uniformly distributed on the circumference, the four upright posts 111 are welded at the top end of the hinge base 12, the hinge base 12 is provided with four reinforcing ribs 122 which are fixedly connected with the four upright posts 111 in a one-to-one correspondence manner, and the connecting strength between the hinge base 12 and the four upright posts 111 is enhanced through the reinforcing ribs 122; cross gaps 112 are formed between the four columns 111.

As shown in fig. 2, 3, 7 and 8, the boom set mechanism 2 comprises four retractable booms 24, wherein the four booms 24 are hinged on the hinge base 12 and are distributed at equal intervals around the circumference of the suspension frame 1; the boom group mechanism 2 further comprises a unfolding driving motor 21, a lead screw 22 vertically and rotatably mounted on the suspension bracket 1, a cross stroke block 23 mounted on the lead screw 22 in a threaded fit manner, and four pull rods 25; the unfolding driving motor 21 is fixedly arranged on the bottom end face of the hinge base 12 through a bolt, the lead screw 22 is fixedly connected with an output shaft of the unfolding driving motor 21, and the cross stroke block 23 is in sliding fit with the cross gap 112; the four suspension arms 24 and the cross stroke block 23 are hinged and connected through two ends of a pull rod 25; a cylindrical rubber positioning block 121 is arranged at the center of the top end of the hinge seat 12, the lead screw 22 penetrates through the rubber positioning block 121, and when the cross stroke block 23 descends to be in contact with the rubber positioning block 121, the suspension arm 24 is in a horizontal state.

In the lifting appliance provided by the invention, the lifting arm group mechanism 2 adopts a structure design capable of being unfolded and folded, and the four lifting arms 24 can be folded in a non-working state, so that the whole lifting appliance is more compact, occupies small space, is convenient to carry and transport, and is more beneficial to the protective storage of the whole lifting appliance; in the working state, the four suspension arms 24 can be completely unfolded, specifically, the unfolding driving motor 21 is started to drive the screw rod 22 to rotate, the screw rod 22 drives the cross stroke block 23 to slide downwards along the cross gap 112, then the four suspension arms 24 are unfolded outwards under the pushing of the four pull rods 25, when the cross stroke block 23 descends to be in contact with the rubber positioning block 121, the four suspension arms 24 are completely unfolded and are in a horizontal state, and in the unfolded state, the lifting operation can be performed.

As shown in fig. 2, 5, 6 and 9, two sides of each suspension arm 24 in the length direction are provided with side stay rod assemblies 3 in mirror symmetry; the side stay bar component 3 comprises a hinged end 31 hinged on the side wall of the suspension arm 24, a screw rod 32 with one end rotatably connected with the hinged end 31 and a threaded sleeve rod 33 in threaded fit connection with the other end of the screw rod 32; the hinged position of the hinged end 31 is close to the front end of the boom 24, and when the boom 24 is in a horizontal state, the axial direction of the screw 32 is in a horizontal direction; the front end of the screw rod 33 is provided with two clamping joints 331, the cross section of each clamping joint 331 is in a shape of a right-angle sector ring, the two clamping joints 331 are distributed at intervals of 180 degrees in the circumferential direction around the central axis of the screw rod 33, and two clamping gaps 332 are formed between the two clamping joints 331 at intervals; the side stay bar assembly 3 further comprises a plug 34 disposed on the sidewall of the boom 24, the plug 34 is cylindrical and axially along the length direction of the boom 24, and when the screw rod 32 is rotated to make the screw sleeve rod 33 axially coincide with the plug 34, the plug 34 can be inserted between the two snap joints 331.

When the suspension arm 24 is folded, the side stay rod assemblies 3 on both sides of the suspension arm 24 can also be kept in a folded state, because the hinged end 31 and the suspension arm 24 are hinged, the whole body formed by the hinged end 31, the screw rod 32 and the screw sleeve rod 33 can be rotated to a position where the axial direction of the screw sleeve rod 33 is coincident with the axial direction of the plug connector 34, and because the screw sleeve rod 33 is rotatably connected with the screw rod 32 by threads, the screw rod 32 can be held and the screw sleeve rod 33 is rotated to move towards the direction close to the plug connector 34, and finally the plug connector 34 is inserted between the two clamping connectors 331, so that the side stay rod assemblies 3 can be fixedly folded on the sides of the suspension arm 24. When the lifting operation is carried out, after the four suspension arms 24 are in a fully unfolded state, the side stay assemblies 3 can be opened, specifically, the clamping joint 331 in each side stay assembly 3 is sequentially pulled out of the screw sleeve rod 33, because the screw rod 32 is rotatably connected with the hinged end 31, the freedom degree of rotation around the axial direction is reserved, so that the screw rod 32 and the screw sleeve rod 33 can realize integral rotation, when the two screw sleeve rods 33 in the two adjacent side stay assemblies 3 are butted, the clamping joint 331 in one screw rod 33 is aligned with the clamping notch 332 of the other screw sleeve rod 33, then one screw rod 33 is continuously rotated, so that the clamping joint 331 is slightly inserted into the clamping notch 332 of the other screw sleeve rod 33, and under the continuous rotation, the other screw rod 33 and the screw rod 32 which is in threaded connection and matched with each other screw rod 33 integrally rotate, so that one screw rod 33 approaches to the other screw sleeve rod 33, then, the two screw sleeve rods 33 are alternately rotated, so that the side stay bar assembly 3 is finally opened to the state shown in fig. 5 and fig. 6, the screw sleeve rods 33 between the two adjacent suspension arms 24 are mutually engaged and butted, namely, the two clamping connectors 331 of one screw rod 32 are aligned and inserted into the two clamping notches 332 of the other screw rod 32, and the two screw rods 32 are mutually engaged, and here, it should be noted that the circumferential width of the clamping notches 332 is larger than the circumferential width of the clamping connectors 331, so that the clamping connector 331 rotated on one screw sleeve rod 33 can be slightly inserted into the clamping notch 332 of the other screw sleeve rod 33 when the side stay bar is initially butted; in this state, the side stay rod assemblies 3 are matched two by two, so that the four suspension arms 24 are bridged and connected in series; because in the boom group mechanism 2, the boom 24 is only pulled by the pull rod 25, the whole boom 24 is long in size and bears a large weight load when the prefabricated parts are hoisted, and the hinged position of the screw 32 in each side stay component 3 is close to the front end of the boom 24, the side stay components 3 after bridging and connecting in series strengthen the tensile strength of the boom 24, and improve the stability and reliability of the whole sling.

As shown in fig. 3, 4 and 7, the bottom end face of each boom 24 is provided with a hook mechanism 4 at a position near the front end; the lifting hook mechanism 4 comprises an electric push rod 41 fixedly arranged on the bottom end surface of the lifting arm 24 through a bolt, a slide rail 42 welded on the bottom end surface of the lifting arm 24, a slide seat 43 in sliding fit with the slide rail 42, a lifting hook 44 and a tension spring 45; the output direction of the electric push rod 41 is along the length direction of the suspension arm 24, the guide direction of the slide rail 42 is along the length direction of the suspension arm 24, the slide seat 43 is fixedly connected with the output end of the electric push rod 41, the lifting hook 44 is hinged at the bottom end of the slide seat 43, one end of the tension spring 45 is hinged on the slide seat 43, the other end of the tension spring 45 is welded on the lifting hook 44, the lifting hook 44 is in an inclined state under the control of the tension spring 45, and the inclined direction of the lifting hook 44 is deviated to one side of the front end of the suspension arm 24 in the length direction.

During actual hoisting operation, the hoisting tool is hoisted to the position above the prefabricated part to be assembled through hoisting equipment, the four lifting hooks 44 are correspondingly close to the positions of the four prefabricated lifting rings 113 of the prefabricated part one by one, then the four electric push rods 41 are sequentially started, the electric push rods 41 drive the sliding seats 43 to move towards the direction close to the embedded lifting rings along the sliding rails 42, and then the lifting hooks 44 hook on the embedded lifting rings, so that the lifting hooks 44 do not need to be hooked on each embedded lifting ring manually during actual operation, and the trouble and inconvenience of manual operation are solved; in addition, the purpose of the inclined pulling of the hook 44 through the tension spring 45 is that before the hook is hooked, the inclined hook 44 is more beneficial to automatically extending to the embedded hanging ring and hooking, when the hook is in a lifting state, under the pulling of gravity, the hook 44 is in a vertical state, so that the reliable hooking is not influenced, when the hook is detached, when the prefabricated part is detached, the hook 44 does not bear the gravity any more, so that the inclined state is restored again under the action of the tension spring 45, and the hook 44 is conveniently and automatically pulled out from the embedded hanging ring.

When the GIS assembly type foundation is assembled, the lifting device reduces the labor input, solves the inconvenience of manual operation, can realize automatic hook hooking and hook unloading and is beneficial to high-efficiency lifting operation in the lifting process of the prefabricated part through the special lifting device provided by the invention; in addition, the whole lifting appliance is more stable and reliable in structure, not prone to being affected by severe outdoor weather such as strong wind and the like, better in balance, capable of enhancing the reliability of the lifting appliance in lifting and greatly reducing potential safety hazards in lifting high-altitude operation.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. A construction method for an outdoor transformer substation is characterized by comprising the following steps: the construction method specifically comprises the following steps:

the process of constructing the foundation of the transformer substation by adopting the outdoor transformer substation construction method of the steps S1-S7 also specifically relates to the special lifting appliance for the GIS assembly type foundation member, which comprises a suspension bracket (1), a suspension arm group mechanism (2), a side stay rod assembly (3) and a lifting hook mechanism (4); wherein: the boom group mechanism (2) comprises four retractable and deployable booms (24), and the four booms (24) are hinged to the bottom end position of the suspension frame (1) and are distributed at equal intervals around the circumference of the suspension frame (1); the two sides of each suspension arm (24) in the length direction are provided with the side stay rod assemblies (3) in mirror symmetry; the bottom end surface of each suspension arm (24) is provided with the hook mechanism (4) at a position close to the front end;

the lifting hook mechanism (4) comprises an electric push rod (41) fixedly arranged on the bottom end face of the lifting arm (24), a sliding rail (42) fixed on the bottom end face of the lifting arm (24), a sliding seat (43) in sliding fit with the sliding rail (42), a lifting hook (44) and a tension spring (45); electric putter's (41) output direction is followed the length direction of davit (24), the direction of slide rail (42) is followed the length direction of davit (24), sliding seat (43) with electric putter's (41) output fixed connection, lifting hook (44) articulate the bottom of sliding seat (43), extension spring (45) one end articulates on sliding seat (43), extension spring (45) other end is fixed on lifting hook (44), lifting hook (44) are in the inclined state under the control of extension spring (45), just the incline direction of lifting hook (44) is partial to davit (24) length direction's front end one side.

2. The outdoor substation construction method according to claim 1, characterized in that: the boom group mechanism (2) further comprises a unfolding driving motor (21) fixedly mounted at the bottom end of the suspension frame (1), a lead screw (22) vertically and rotatably mounted on the suspension frame (1), a cross stroke block (23) and four pull rods (25), wherein the cross stroke block is mounted on the lead screw (22) in a threaded fit manner; the lead screw (22) is fixedly connected with an output shaft of the unfolding driving motor (21), and the cross stroke frame is vertically matched with the suspension frame (1) in a sliding manner; the four suspension arms (24) and the cross stroke block (23) are hinged and connected through two ends of the pull rod (25).

3. The outdoor substation construction method according to claim 1, characterized in that: the side stay bar component (3) comprises a hinged end (31) hinged on the side wall of the suspension arm (24), a screw rod (32) with one end rotatably connected with the hinged end (31) and a threaded sleeve rod (33) in threaded fit connection with the other end of the screw rod (32); the hinged position of the hinged end (31) is close to the front end of the suspension arm (24), and when the suspension arm (24) is in a horizontal state, the axial direction of the screw rod (32) is in a horizontal direction; the front end of spiro union pole (33) is provided with two joint (331), the cross-section of joint (331) is right angle fan ring-type, two joint (331) is in centre on the week of spiro union pole (33) center pin is 180 interval distributions, two the interval is formed with two joint breach (332) between joint (331).

4. The outdoor substation construction method according to claim 2, characterized in that: the suspension bracket (1) comprises a guide bracket (11) and a hinged seat (12), the guide bracket (11) is provided with four upright posts (111) which are uniformly distributed on the circumference, the four upright posts (111) are fixedly connected to the top end of the hinged seat (12), and a cross gap (112) is formed between the four upright posts (111); the unfolding driving motor (21) is fixedly installed on the bottom end face of the hinge base (12), the cross stroke block (23) is in sliding fit with the cross gap (112), and the suspension arm (24) is hinged to the hinge base (12).

5. The outdoor substation construction method according to claim 3, characterized in that: the side stay bar component (3) further comprises a plug connector (34) arranged on the side wall of the suspension arm (24), the plug connector (34) is cylindrical and axially arranged along the length direction of the suspension arm (24), and when the screw rod (32) is rotated to enable the screw sleeve rod (33) to axially coincide with the plug connector (34), the plug connector (34) can be inserted between the two clamping connectors (331).

6. The outdoor substation construction method according to claim 4, characterized in that: the top end of the guide frame (11) is vertically and rotatably provided with a hanging ring (113).

7. The outdoor substation construction method according to claim 4, characterized in that: the center position of the top end of the hinged base (12) is provided with a cylindrical rubber positioning block (121), the lead screw (22) penetrates through the rubber positioning block (121), and when the cross stroke block (23) descends to be in contact with the rubber positioning block (121), the suspension arm (24) is in a horizontal state.

8. The outdoor substation construction method according to claim 1, characterized in that: four reinforcing ribs (122) which are fixedly connected with the four upright posts (111) in a one-to-one correspondence manner are arranged on the hinge base (12).