A double-pole transformer stand for emergency repair and its fixing device

Abstract

The present invention provides a transformer stand for emergency repair and a fixing device thereof, which solves the problem that the fixing device of the transformer stand has a bulky structure and is difficult to transport in places with inconvenient transportation. The structure of the fixing device includes: a chassis, a chuck located above the chassis, the chassis is a truncated cone structure, a circular groove is provided at the center of the top of the chassis, the chuck is composed of a left chuck and a right chuck, and the chuck body is provided with grids in the transverse and longitudinal directions respectively, and the left chuck and the right chuck are fixedly connected by screws running through the longitudinal grids. At the same time, a double-pole transformer stand for emergency repair including the fixing device is also proposed, which can be easily carried by hand in places where vehicles cannot be transported. Furthermore, the present invention proposes a quick-installation double-pole transformer stand in order to realize the efficient and low-cost preparation of various composite material accessories and the rapid installation of various cross arms.

Description

Technical Field

[0001] The invention relates to the field of power transmission devices, in particular to a double-pole transformer stand for emergency repair and a fixing device thereof. Background Art

[0002] In the field of power transmission equipment, when installing a transformer rack, the fixing device of the transformer rack is very important, which directly affects the stability of the rack. For the transformer rack used for emergency repair, because it is used temporarily, it only needs to ensure safety for a short time. However, the existing fixing device is made of cement and the structure is bulky. When repairing power transmission equipment in areas with inconvenient transportation, it is difficult to transport the fixing device to the destination due to its bulkiness, resulting in delays in the repair. Summary of the invention

[0003] The present invention overcomes the defects of the prior art and proposes a double-pole transformer stand fixing device for emergency repair made of all-composite materials. The device makes full use of the characteristics of light weight and high strength of glass fiber-based polyurethane composite materials, and combines with special structural design to achieve stable fixation of the transformer stand. The specific technical scheme is as follows.

[0004] A fixing device for a double-pole transformer stand for emergency repair, the structure includes: a chassis placed at the bottom for bearing the weight of the pole, a chuck located above the chassis for bearing the overturning force of the pole, the chassis is a truncated cone structure, a circular groove is provided at the center of the top of the chassis for fixing the pole, the chuck consists of a left chuck and a right chuck, the inner contours of the left chuck and the right chuck are semicircular, the outer contours of the chuck are rectangular or cubed, the chuck body is respectively provided with grids along the horizontal and longitudinal directions, the left chuck and the right chuck are fixedly connected by screws penetrating the longitudinal grids, a plurality of steel chisels are provided in the grids, after the bottom of the pole sits upright in the circular groove of the chassis, the chuck clamps the bottom of the pole, first buries the part below the chuck in the soil, after compaction, inserts the steel chisel into the grid of the chuck and continues to fill the soil, buries the chuck in the pit and compacts it.

[0005] The beneficial effects of this technical solution are: 1. The chuck is designed as a grid structure, which reduces the material consumption of the chuck preparation and reduces the cost. On the other hand, the steel bar can be inserted along the grid, and then the chuck and the steel bar are buried in the soil together, which enhances the stability of the pole fixation. 2. The grid arranged along the chuck in the horizontal direction facilitates the insertion of the screw and the fixation of the left and right chucks. 3. The overall design is a composite material with light weight. When carrying out rescue work in areas with inconvenient transportation, one person can easily carry the fixing device.

[0006] The present invention also provides a double-pole transformer stand including the above-mentioned fixing device, the structure comprising: a first pole and a second pole installed in parallel, a lead crossarm, a fuse crossarm, a lightning arrester crossarm, a transformer crossarm and a low-voltage distribution box crossarm installed between the first pole and the second pole and arranged from top to bottom, the transformer crossarm and the low-voltage distribution box crossarm are respectively composed of two parallel crossarms, the two ends of the two crossarms are fixedly connected to the through holes of the connecting sleeve by screws, the connecting sleeve is used to install the crossarm on the first pole and / or the second pole, and fixed on both sides of the first pole and the second pole, the lead crossarm, the fuse crossarm, the lightning arrester crossarm, the transformer crossarm and the low-voltage distribution box crossarm are fixedly connected to the through holes of the connecting sleeve by screws, and through holes are respectively designed to penetrate the two relatively positive wall thicknesses on the connecting sleeve, the inner hole of the connecting sleeve is a tapered hole, and the taper and aperture size are consistent with the taper and pole diameter size of the pole at the installation position.

[0007] Furthermore, the pole top of the first pole is designed as a tension cross arm, and the pole top of the second pole is designed as a straight cross arm.

[0008] According to one embodiment of the present invention, the structure of the tension crossarm includes: a first top connection sleeve arranged at the top of the pole, the middle part of the first top connection sleeve is an inner conical hole, the taper and aperture size of the conical hole are consistent with the taper and pole diameter size at the corresponding first pole installation position, through holes are arranged on the three adjacent side walls at the top, a first insulator is fixedly connected to the through holes on the two opposite positive side walls of the first top connection sleeve by screws, and a second insulator is fixedly connected to the through holes on the other side wall of the first top connection sleeve by nuts, two crossarms located below the first top connection sleeve, fixed to the two sides of the first pole by the connection sleeve, two through holes are arranged in the middle of the two crossarms, the two crossarms are connected to the connection sleeve by screws, and the insulators are horizontally installed at each end of the crossarm perpendicular to the direction of the crossarm. Among them, the structure for implementing the installation of the insulators at each end of the crossarm is a connecting plate that is perpendicular to the direction of the crossarm and horizontally fixed to the two ends of the crossarm, the two ends of the connecting plate are provided with through holes in the vertical direction, the insulator is fixed to the connecting plate by a connecting piece, and the connecting piece is connected to the through hole of the connecting plate by a screw. Alternatively, the structure for installing insulators at each end of the cross arm is that each end of the cross arm is provided with a through hole in the vertical direction, and the insulator is a first insulator, which is fixedly connected to each end of the cross arm by a screw.

[0009] According to one embodiment of the present invention, the structure of the linear crossarm includes: a second top connecting sleeve arranged at the top of the pole body, the middle part of which is a tapered hole, the taper and hole diameter are consistent with the taper and pole diameter at the corresponding installation position of the second pole, through holes are symmetrically provided on the wall thickness on the left and right sides of the tapered hole, a crossarm fixedly connected to the through hole of the second top connecting sleeve by a screw and a nut, through holes are respectively provided at both ends and the middle of the crossarm in the vertical direction, an insulator fixedly connected to the through hole of the crossarm by a nut, the lower end of the insulator is an external thread, and is installed in conjunction with the nut after being inserted into the through hole.

[0010] Furthermore, in order to facilitate the molding and preparation of the connecting sleeve, the outer contour of the connecting sleeve is a rectangular parallelepiped or a cube.

[0011] Furthermore, when the screw is connected to the connecting sleeve and the through holes on each cross arm, the polyurethane material is soft and the screw is hard. After repeated use, the polyurethane material is severely worn. In order to improve the hardness of the through holes and ensure that the structure is complete and smooth after repeated use, the through holes on the connecting sleeve, lead cross arm, fuse cross arm, lightning arrester cross arm, transformer cross arm, and low-voltage distribution box cross arm are all built-in fiberglass parts.

[0012] Furthermore, the connecting sleeve, lead crossarm, fuse crossarm, lightning arrester crossarm, transformer crossarm, and low-voltage distribution box crossarm are all made of glass fiber reinforced polyurethane composite materials.

[0013] The technical effects of the double-pole transformer stand for emergency repair are: 1. The taper and rod diameter of each connecting sleeve are consistent with those of the rod body at the corresponding installation position. During installation, it can be quickly installed by directly inserting from the top of the rod body. The clamp structure used in the prior art requires the two halves of the clamp to be clamped on the rod body and aligned, and then connected with screws. 2. Each cross arm is connected to the connecting sleeve by a screw. During the installation process, the connecting sleeve and the screw can be assembled and connected first and then quickly inserted into the rod body. In the prior art, the cross arm is fixed on the clamp, and the clamp is two semicircular structures. During installation, the clamp and the cross arm must be aligned with the corresponding installation position of the rod body at the same time, and then the clamp and the cross arm are connected with screws to fix them on the rod body. The installation is cumbersome and the operation is inconvenient. 3. The shapes of each connecting sleeve and the cross arm are designed to be regular structures for easy preparation. 4. When the screw is connected to the through holes of each connecting sleeve and the cross arm, the polyurethane material is soft and the screw is hard. After repeated use, the polyurethane material is severely worn. In order to improve the hardness of its through holes and ensure that the structure is complete and smooth after repeated use, the through holes on the first connecting sleeve and the second connecting sleeve, as well as the through holes on the cross arm are all set as fiberglass built-in parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The double-pole transformer stand and its fixing device for emergency repair in the first embodiment are illustrated;

[0015] Figure 2 It is a structural schematic diagram of the transformer stand fixing device;

[0016] Figure 3 It is a structural schematic diagram of the top tension cross arm of the double-pole transformer stand for emergency repair in the first embodiment;

[0017] Figure 4 It is a structural schematic diagram of the top tension cross arm of the double-pole transformer stand for emergency repair in the second embodiment;

[0018] Figure 5 It is a structural schematic diagram of the straight cross arm at the top of the double-pole transformer stand for emergency repair in the first and second embodiments;

[0019] Figure 6 It is a schematic diagram of the structure of the connection sleeve of the double-pole transformer stand for emergency repairs.

[0020] In the figure, 100. chassis, 200. chuck, 201. left chuck, 202. right chuck, 300. steel chisel, 1. first pole, 2. second pole, 3. lead crossarm, 4. fuse crossarm, 5. lightning arrester crossarm, 6. transformer crossarm, 7. low-voltage distribution box crossarm, 8. connecting plate, 9. second insulator, 10. connecting sleeve, 11. through hole, 12. tension crossarm, 13. straight crossarm, 14. first top connecting sleeve, 15. connecting piece, 16. first insulator, 17. crossarm, 18. second top connecting sleeve. DETAILED DESCRIPTION

[0021] In order to further illustrate the present invention, the present invention will be described in detail below with reference to embodiments.

[0022] Embodiment 1

[0023] like Figure 1 and Figure 2 As shown, a fixing device for a double-pole transformer stand for emergency repairs comprises: a chassis 100 placed at the bottom for bearing the weight of the pole, a chuck 200 located above the chassis for bearing the overturning force of the pole, the chassis 100 is a frustum structure, a circular groove is provided at the center of the top of the chassis for fixing the pole, the chuck 200 consists of a left chuck 201 and a right chuck 202, the inner contours of the left chuck 201 and the right chuck 202 are semicircular, the outer contour of the chuck 200 is a cuboid or a cube, the chuck body is provided with grids along the transverse and longitudinal directions, respectively, the left chuck 201 and the right chuck 202 are fixedly connected by screws penetrating the longitudinal grids.

[0024] like Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, a double-pole transformer stand for emergency repair, in addition to the above structure, also includes: a first pole 1 and a second pole 2 installed in parallel, a lead cross arm 3, a fuse cross arm 4, a lightning arrester cross arm 5, a transformer cross arm 6 and a low-voltage distribution box cross arm 7 installed between the first pole 1 and the second pole 2 and arranged from top to bottom, the transformer cross arm 6 and the low-voltage distribution box cross arm 7 are respectively composed of two parallel cross arms, the two ends of the two cross arms are fixedly connected to the through holes of the connecting sleeve 10 by screws, and are fixed to the first pole 1 On both sides of the second pole 2, the lead crossarm 3, the fuse crossarm 4, the lightning arrester crossarm 5, the transformer crossarm 6 and the low-voltage distribution box crossarm 7 are fixedly connected to the through holes of the connecting sleeve 10 through screws. Through holes 11 are respectively designed to penetrate the two relatively positive wall thicknesses on the connecting sleeve 10. The inner hole of the connecting sleeve is a tapered hole, and the taper and aperture size are consistent with the taper and pole diameter size of the pole at the installation position. The pole top of the first pole 1 is designed as a tension crossarm 12, and the pole top of the second pole 2 is designed as a straight crossarm 13. The structure of the tension crossarm includes: a first top connection sleeve 14 arranged at the top of the pole, the middle part of the first top connection sleeve 14 is an inner tapered hole, the taper and aperture size of the tapered hole are consistent with the taper and pole diameter size at the corresponding first pole installation position, through holes are arranged on the three adjacent side walls at the top, a first insulator 16 fixedly connected to the through holes on the two opposite positive side walls of the first top connection sleeve 14 by a screw, and a second insulator 9 fixedly connected to the through hole on the other side wall of the first top connection sleeve 14 by a nut, located at the first top connection sleeve 14 Below, two cross arms 17 are fixed on both sides of the first pole 1 by connecting sleeves 10, and two through holes are provided in the middle of the two cross arms. The two cross arms are connected to the connecting sleeves 10 by screws, and the insulators are horizontally installed at each end of the cross arms perpendicular to the direction of the cross arms. The structure for installing the insulators at each end of the cross arms is a connecting plate 8 that is perpendicular to the direction of the cross arms 17 and horizontally fixed at both ends of the cross arms. Through holes are provided at both ends of the connecting plate in the vertical direction. The insulator is fixed to the connecting plate 8 by a connecting piece 15, and the connecting piece 15 is connected to the through hole of the connecting plate by screws. The structure of the linear cross arm 13 includes: a second top connection sleeve 18 arranged at the top of the pole body, wherein the middle part is a tapered hole, and the taper and aperture size are consistent with the taper and pole diameter size at the corresponding installation position of the second pole, through holes are symmetrically arranged on the wall thickness on the left and right sides of the tapered hole, a cross arm fixedly connected to the through hole of the second top connection sleeve 18 by a screw and a nut, through holes are arranged in the vertical direction at both ends and the middle of the cross arm, and an insulator fixedly connected to the through hole of the cross arm by a nut, the lower end of the insulator is an external thread, and after being inserted into the through hole, it is installed in conjunction with the nut. The outer contour shape of the connection sleeve 10 is a rectangular parallelepiped or a cube. The through holes on the connection sleeve 10, the lead cross arm 3, the fuse cross arm 4, the arrester cross arm 5, the transformer cross arm 6, and the low-voltage distribution box cross arm are all built-in glass fiber reinforced plastic parts.The connecting sleeve 10, the lead cross arm 3, the fuse cross arm 4, the lightning arrester cross arm 5, the transformer cross arm 6 and the low-voltage distribution box cross arm are all made of glass fiber reinforced polyurethane composite materials.

[0025] When repairing a transmission line, the installation method of the double-pole transformer stand for emergency repair described in this embodiment is as follows: first, align the through holes at the ends of the rod handles of the two first insulators 16 with the two symmetrical through holes of the first top connecting sleeve 14, and insert the screw from the top of the through hole of the first top connecting sleeve 14, and tighten the bottom of the screw with a nut. After installation, the two first insulators are arranged horizontally and on the same line, and the end of the rod handle of the second insulator 9 is a threaded structure. The rod handle of the second insulator 9 is inserted into the other through hole of the first top connecting sleeve 14, and the end is tightened with a nut; then assemble the connecting sleeve 10 and the two cross arms 17, align the through holes in the middle of the two cross arms 17 with the two through holes on the connecting sleeve 10, insert the screw into the through hole, tighten the end of the screw with a nut, and then use the screw to fix the two connecting plates 8 to the ends of the cross arms 17 to complete the assembly of the accessories on the tension cross arm.

[0026] The second insulator 9 is assembled with the cross arm 17, and the assembled cross arm 17 is fixedly connected with the second top connecting sleeve 18 by means of screws, so as to complete the assembly of accessories on the linear cross arm.

[0027] The assembly of the lead cross arm 3, the fuse cross arm 4, the arrester cross arm 5, the transformer cross arm 6, the low-voltage distribution box cross arm 7 and the connecting sleeve 10 is completed in sequence.

[0028] Insert the assembled low-voltage distribution box crossarm 7, transformer crossarm 6, lightning arrester crossarm 5, fuse crossarm 4 and lead crossarm 3 into the pole bodies of the first pole 1 and the second pole 2 in sequence, then insert the assembled tension crossarm accessories into the pole body of the first pole 1, and then insert the assembled straight crossarm accessories into the pole body of the second pole 2, and then stand up the assembled double-pole transformer stand for emergency repairs. The bottoms of the two poles sit in the circular grooves of the chassis. After standing upright, use a screw to clamp the bottom of the pole with a chuck. First bury the area below the chuck in the soil. After compaction, insert a steel chisel into the grid of the chuck, and then continue to fill the soil. Bury the chuck in the pit and compact it.

[0029] Embodiment 2

[0030] like Figure 4 As shown, the difference between this embodiment and the first embodiment is that the structure of the tension cross arm is different, specifically as follows: the structure of installing the insulators at each end of the cross arm in the first embodiment is replaced by the structure that each end of the cross arm 17 is provided with a through hole in the vertical direction, and the insulator is a first insulator 16, which is fixedly connected to each end of the cross arm 17 by a screw. The other structures and installation methods are the same as those of the first embodiment.

[0031] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-pole transformer stand for emergency repair, the structure comprising: A chassis (100) is placed at the bottom for bearing the weight of the pole, and a chuck (200) is located above the chassis for bearing the overturning force of the pole, characterized in that: The chassis (100) is a truncated cone structure, and a circular groove is provided at the center of the top of the chassis for fixing the electric pole; The chuck (200) is composed of a left chuck (201) and a right chuck (202). The inner contours of the left chuck (201) and the right chuck (202) are semicircular, and the outer contour of the chuck (200) is a rectangular parallelepiped or a cube. The chuck body is provided with grids in the transverse and longitudinal directions respectively. The left chuck (201) and the right chuck (202) are fixedly connected by screws penetrating the longitudinal grids. A plurality of steel chisels (300) are provided in the grids. After the bottom of the pole is upright in the circular groove of the chassis (100), the chuck (200) clamps the bottom of the pole. The part below the chuck (200) is first buried in the soil. After compaction, the steel chisel (300) is inserted into the grid of the chuck (200) and the soil is continuously filled. The chuck (200) is also buried in the soil pit and compacted. The electric pole comprises a first electric pole (1) and a second electric pole (2) installed in parallel, the first electric pole (1) and the second electric pole (2) are made of a glass fiber-based polyurethane composite material, and the first electric pole (1) and the second electric pole (2) are connected via a cross arm; A connecting sleeve (10) for mounting the cross arm on the first electric pole (1) and / or the second electric pole (2), wherein two relatively positive wall thicknesses on the connecting sleeve (10) are respectively penetrated with through holes (11), and the inner hole of the connecting sleeve is a tapered hole, and the taper and hole diameter dimensions are consistent with the taper and pole diameter dimensions of the electric pole at the installation position; The pole top of the first pole (1) is designed as a tension cross arm (12), and the pole top of the second pole (2) is designed as a straight cross arm (13).

2. The double-pole transformer stand for emergency repair as claimed in claim 1, characterized in that: The structure further comprises: a lead cross arm (3), a fuse cross arm (4), a lightning arrester cross arm (5), a transformer cross arm (6) and a low-voltage distribution box cross arm (7) which are installed between the first electric pole (1) and the second electric pole (2) and arranged from top to bottom; The transformer cross arm (6) and the low-voltage distribution box cross arm (7) are respectively composed of two parallel cross arms, the two ends of which are fixedly connected to the through holes of the connecting sleeve (10) through screws and fixed to both sides of the first pole (1) and the second pole (2); The lead cross arm (3), the fuse cross arm (4), the arrester cross arm (5), the transformer cross arm (6) and the low-voltage distribution box cross arm (7) are fixedly connected to the through hole of the connecting sleeve (10) via screws.

3. The double-pole transformer stand for emergency repair as claimed in claim 1, characterized in that: The structure of the tension cross arm (12) comprises: a first top connection sleeve (14) arranged at the top of the pole, the middle part of the first top connection sleeve (14) is an inner conical hole, the taper and aperture size of the conical hole are consistent with the taper and pole diameter size at the corresponding first pole installation position, and through holes are arranged on the three adjacent side walls at the top; A first insulator (16) fixedly connected to through holes on two opposite positive side walls of a first top connecting sleeve (14) via a screw rod; and a second insulator (9) fixedly connected to the through hole on the other side wall of the first top connecting sleeve (14) via a nut; Two cross arms (17) located below the first top connection sleeve (14) and fixed to both sides of the first pole (1) through the connection sleeve (10), two through holes being provided in the middle of the two cross arms, and the two cross arms are connected to the connection sleeve (10) through screws; Insulators installed horizontally at each end of the cross arm, perpendicular to the direction of the cross arm.

4. The double-pole transformer stand for emergency repair as claimed in claim 3, characterized in that: The structure for installing the insulators at each end of the cross arm is a connecting plate (8) which is perpendicular to the direction of the cross arm (17) and horizontally fixed at both ends of the cross arm, and through holes are provided at both ends of the connecting plate in the vertical direction. The insulator is fixed to the connecting plate (8) via a connecting piece (15), and the connecting piece (15) is connected to the through hole of the connecting plate via a screw.

5. The double-pole transformer stand for emergency repair as claimed in claim 3, characterized in that: The structure for installing the insulators at each end of the cross arm is that each end of the cross arm (17) is provided with a through hole in the vertical direction, and the insulator is a first insulator (16), which is fixedly connected to each end of the cross arm (17) through a screw.

6. The double-pole transformer stand for emergency repair as claimed in claim 1, characterized in that: The structure of the linear cross arm (13) comprises: a second top connecting sleeve (18) arranged at the top of the pole body, the middle of which is a tapered hole, the taper and the hole diameter are consistent with the taper and the pole diameter at the corresponding installation position of the second pole, and through holes are symmetrically arranged on the wall thickness of the left and right sides of the tapered hole; A cross arm fixedly connected to the through hole of the second top connecting sleeve (18) via a screw rod and a nut, wherein through holes are respectively provided at both ends and the middle of the cross arm in the vertical direction; A second insulator (9) is fixedly connected to the through hole of the cross arm through a nut, and the lower end of the second insulator is externally threaded and is installed in cooperation with the nut after being inserted into the through hole.

7. The double-pole transformer stand for emergency repair according to claim 2 or claim 3, characterized in that: The outer contour of the connecting sleeve (10) is in the shape of a cuboid or a cube.

8. The double-pole transformer stand for emergency repair as claimed in claim 2, characterized in that: The connecting sleeve (10), the lead cross arm (3), the fuse cross arm (4), the lightning arrester cross arm (5), the transformer cross arm (6), and the through holes on the low-voltage distribution box cross arm are all built-in glass fiber reinforced plastic parts.

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