Shielding device hoisting tool for direct-current high-speed parallel switch

Abstract

The utility model relates to the technical field of hoisting of shielding cases for switches, in particular to a shielding device hoisting tool for direct-current high-speed parallel switches. The shielding device hoisting tool for the direct-current high-speed parallel switch comprises two arc-shaped pressing plates, the two arc-shaped pressing plates are arranged in a buckled mode so as to clamp corresponding shielding covers, fixing plates are arranged at the two ends of each arc-shaped pressing plate, and connecting structures are arranged on the fixing plates and used for connecting the two buckled arc-shaped pressing plates. A hoisting structure is arranged on at least one of the two arc-shaped pressing plates, the hoisting structure comprises a hoisting tool connecting beam which is consistent with the radian of the arc-shaped pressing plate where the hoisting structure is located, and the hoisting tool connecting beam and the arc-shaped pressing plate where the hoisting tool connecting beam is located are arranged in a spaced mode and have the set length so that the rotating angle of the shielding case can be adjusted when the shielding case is hoisted. According to the shielding case hoisting tool for the direct-current high-speed parallel switch, a simple structure is used, the problem that the shielding case of the direct-current high-speed parallel switch is difficult to butt when being mounted at high altitude is solved, and the hoisting efficiency of the shielding case is effectively enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch shielding cover hoisting technical field especially relates to a shielding device hoisting frock for direct current high speed parallel switch. BACKGROUND

[0002] Direct current high speed parallel switch mainly concentrates in the field using needing high speed, accurate control direct current electric energy transmission.In high voltage multi-terminal direct current transmission system, direct current high speed parallel switch can quickly, accurately respond control signal to ensure the stable transmission and distribution of electric energy, in the system needing direct current power output, direct current high speed parallel switch is used to realize the output and adjustment of direct current power supply, ensures the stability and reliability of power supply.

[0003] Triplex transmission device is the key component of direct current high speed parallel switch, triplex transmission device transmits the power of operating mechanism to the movable contact of switch to realize the quick and accurate action of switch, but in the use process of direct current high speed parallel switch, due to the irregularity of triplex transmission device appearance, strong uneven electric field is generated at triplex transmission device, therefore, a shielding cover is needed outside triplex transmission device, shielding cover can change the electric field concentrated in triplex transmission device into the electric field evenly distributed in shielding device, can significantly reduce the electric field intensity on the parts near triplex transmission device, improves the influence of external insulation corona effect on the internal electric field distribution of direct current high speed parallel switch.

[0004] The shielding device outside triplex transmission device is usually spherical shielding cover connected by two hemispheres with bolt, the surface of the shielding cover is smooth and cannot set special lifting point, due to the absence of special lifting point, the installation of spherical shielding cover is usually carried out manually, not only the labor intensity is big, but also the efficiency is low, in addition, the shielding cover needs to be adjusted for several times to align bolt hole when assembling the shielding cover, further influences the assembly efficiency of shielding cover. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a shielding device hoisting frock for direct current high speed parallel switch to solve the problem of difficult butt joint of shielding cover outside triplex transmission device in prior art.

[0006] In order to solve the above problem, the shielding device hoisting frock for direct current high speed parallel switch of the utility model adopts the following technical scheme:

[0007] The utility model provides a shielding device hoisting tool for DC high speed parallel switch, including circular arc pressing plate, two circular arc pressing plates are set up to clamp corresponding shielding cover, and the both ends of circular arc pressing plate are equipped with fixed plate, and the fixed plate is equipped with connecting structure to connect two circular arc pressing plates of buckling, and the hoisting structure is equipped on at least one of the two circular arc pressing plates, the hoisting structure includes the beam of lifting appliance connection with the arc of the circular arc pressing plate, and the beam of lifting appliance connection is spaced apart from the circular arc pressing plate and has a set length to adjust the corner of shielding cover when hoisting shielding cover.

[0008] Further, the set length of the beam of lifting appliance connection is not less than 1 / 3 of the length of the circular arc pressing plate.

[0009] Further, the beam of lifting appliance connection is located at the vault of the circular arc pressing plate.

[0010] Further, the connecting structure on the fixed plate is a fastening bolt.

[0011] Further, a pad is arranged at the joint of the fixed plates of the two circular arc pressing plates to limit the clamping force of the circular arc pressing plate on the shielding cover.

[0012] Further, the fixed plate and the circular arc pressing plate are an integral structure.

[0013] Further, the inner surface of the circular arc pressing plate is provided with a protective pad along the circumferential direction.

[0014] Further, the protective pad is a polytetrafluoroethylene protective pad.

[0015] Further, the protective pad is fixed on the circular arc pressing plate by bonding.

[0016] Further, the protective pad is uniformly spaced along the length direction of the circular arc pressing plate.

[0017] Beneficial effects: the shielding cover hoisting tool for DC high speed parallel switch is an opening invention. Through the scheme, the corresponding shielding cover is clamped by the circular arc pressing plate of two buckling settings, and the circular arc pressing plate and the shielding cover are lifted by the beam of lifting appliance connection on the circular arc pressing plate cooperating with the lifting hook on site, the beam of lifting appliance connection is consistent with the arc of the circular arc pressing plate and has a set length and is spaced apart from the circular arc pressing plate, the position of the lifting appliance on the beam of lifting appliance connection is adjusted to adjust the position of the bolt hole on the shielding cover, the bolt hole is connected, the problem that the shielding cover needs to be adjusted multiple times to align the bolt hole during high-altitude assembly is solved, and the hoisting efficiency of the shielding cover is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of an embodiment of a shielding device hoisting tool for a DC high-speed parallel switch.

[0019] In the figure: 1. Arc-shaped pressure plate; 2. Hoist connecting beam; 3. Polytetrafluoroethylene pad; 4. Shielding cover; 5. Pad; 6. Fixing plate. DETAILED DESCRIPTION

[0020] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0021] The utility model provides a shielding device for a DC high-speed parallel switch. The lifting device connecting beam provided on the lifting tool cooperates with the lifting device at the assembly site. The position of the shielding cover 4 can be adjusted by adjusting the position of the lifting device on the lifting device connecting beam, thereby facilitating alignment with the bolt holes.

[0022] As a basic solution, the utility model of a shielding device hoisting tool for a DC high-speed parallel switch includes an arc-shaped pressing plate 1, which has two arc-shaped pressing plates 1 and is arranged to clamp the corresponding shielding cover 4. Figure 1 As shown, both ends of the arc-shaped pressure plate 1 are provided with a fixing plate 6, and the fixing plate 6 is provided with a connecting structure for connecting two pairs of buckled arc-shaped pressure plates 1, and the two arc-shaped pressure plates 1 covered outside the shielding cover 4 are connected by the connecting structure provided on the fixing plate 6, and the shielding cover 4 is clamped in the space formed by the two arc-shaped pressure plates 1 by utilizing the clamping force of the two arc-shaped pressure plates 1 and the connecting structure. A lifting structure is provided on at least one of the two arc-shaped pressure plates 1, and the lifting structure includes a lifting device connecting beam 2 with the same curvature as the arc-shaped pressure plate 1 on which it is located, and the lifting device connecting beam 2 is spaced apart from the arc-shaped pressure plate 1 on which it is located and has a certain length. When lifting the shielding cover 4, the lifting device connecting beam 2 cooperates with the lifting device at the assembly site to lift the shielding cover 4, and the position of the lifting device on the lifting device connecting beam 2 is adjusted to adjust the turning angle of the shielding cover 4 to align with the bolt holes for fixing the shielding cover 4.

[0023] As a preferred embodiment, the set length of the sling connecting beam 2 is not less than 1 / 3 of the length of the arc-shaped pressure plate 1 on which it is located. The relative movement of the on-site sling on the sling connecting beam 2 can realize the adjustment of the lifting point position, effectively solving the problem of difficulty in docking the bolt holes of the shielding cover 4 during the lifting process; in other optional embodiments, the set length of the sling connecting beam 2 is less than 1 / 3 of the length of the arc-shaped pressure plate 1 on which it is located. When the length of the sling connecting beam 2 is shorter, the range of adjusting the lifting point of the sling connecting beam 2 is relatively small.

[0024] As a preferred embodiment, the sling connecting beam 2 is located at the arch of the arc-shaped pressure plate 1 on which it is located. At this time, the sling connecting beam 2 is located in the center of the entire tooling, and the entire device is evenly stressed during the lifting process; in other embodiments, the sling connecting beam 2 is located at both ends of the arc-shaped pressure plate 1 on which it is located. At this time, the sling connecting beam 2 is located on the side of the entire tooling, and the center of gravity of the entire device will be offset during the lifting process, making it inconvenient to adjust the lifting point position.

[0025] As a preferred embodiment, the connection structure provided on the fixing plate 6 is a fastening bolt. The bolt connection structure is simple and easy to assemble and disassemble. The bolts tightly connect the two ends of the two opposing arc-shaped pressure plates 1 together. The two arc-shaped pressure plates 1 clamp the shielding cover 4 to prevent the shielding cover 4 from slipping during the lifting process. In other optional embodiments, the two arc-shaped pressure plates 1 can also be connected by a hinge. Compared with the hinge connection, the lifting tooling connected by bolt connection is more stable and reliable.

[0026] In the process of the connecting structure tightening the arc-shaped pressure plate 1, the two arc-shaped pressure plates 1 approach each other and press the shielding cover 4. Since the arc-shaped pressure plate 1 is not a complete semicircle, there is a risk that the radial pressure of the arc-shaped pressure plate 1 on the shielding cover 4 is too large, causing the shielding cover 4 to deform. As a preferred embodiment, a pad 5 is provided at the joint of the two arc-shaped pressure plates 1 and the fixing plate 6. The pad 5 is padded between the two fixing plates 6 to limit the clamping force of the arc-shaped pressure plate 1 on the shielding cover 4, which can effectively prevent the radial pressure of the arc-shaped pressure plate 1 on the shielding cover 4 from being too large, causing the shielding cover 4 to deform.

[0027] As a preferred embodiment, the fixed plate 6 and the arc-shaped pressure plate 1 are an integrated structure. When the arc-shaped pressure plate 1 is produced, a certain margin is left at both ends of the arc-shaped pressure plate 1 to form the fixed plate 6. The integrated fixed plate 6 and the arc-shaped pressure plate 1 are more stable and reliable. Compared with the separate fixed plate 6 and the arc-shaped pressure plate 1, the integrated fixed plate 6 and the arc-shaped pressure plate 1 do not need to disassemble and assemble the fixed plate 6, thereby reducing unnecessary work processes and improving work efficiency.

[0028] As a preferred embodiment, a protective pad is provided on the inner surface of the arc-shaped pressure plate 1 along the circumferential direction. The protective pad is padded on the contact surface between the arc-shaped pressure plate 1 and the shielding cover 4, thereby alleviating the pressure of the arc-shaped pressure plate 1 on the shielding cover 4 and avoiding deformation of the shielding cover 4 due to excessive pressure generated by the arc-shaped pressure plate 1 on the shielding cover 4, thereby affecting the use effect of the shielding cover 4.

[0029] As a preferred embodiment, the protective pad plate is a polytetrafluoroethylene pad plate, the polytetrafluoroethylene plate has a smooth surface and good compression resistance, and can well release the pressure generated by the arc-shaped pressing plate 1 on the shielding cover 4. In other alternative embodiments, the protective pad plate made of other materials can also protect the shielding cover 4, but compared with other materials, the smooth surface of the polytetrafluoroethylene plate can protect the shielding cover 4 and avoid leaving too many scratches on the surface of the shielding cover 4 during use, thereby affecting the shielding effect of the shielding cover 4.

[0030] In the specific implementation process, the protective pad plate needs to be placed on the surface of the shielding cover 4 first, and then the arc-shaped pressing plate 1 is covered on the protective pad plate. This implementation process is too cumbersome. Therefore, as a preferred embodiment, the protective pad plate is bonded and fixed on the arc-shaped pressing plate 1 where it is located, thereby simplifying the work process and improving the work efficiency.

[0031] As a preferred embodiment, the protective pad plate is uniformly and spacedly arranged along the length direction of the arc-shaped pressing plate 1. The uniformly and spacedly arranged protective pad plate uniformly disperses the pressure generated by the arc-shaped pressing plate 1 on the shielding cover 4, thereby avoiding the deformation of the shielding cover 4 due to uneven stress on the surface of the shielding cover 4 and affecting the use effect. In other alternative embodiments, the protective pad plate can also be arranged to be equal in length to the inner surface of the entire arc-shaped pressing plate.

[0032] The implementation process of the embodiment is as follows: when hoisting the shielding cover 4, the bolts fixing the two arc-shaped pressing plates are first unscrewed, the shielding cover 4 is placed between the two arc-shaped pressing plates, the pad 5 is placed between the two fixing plates 6, and finally the bolts are tightened. At this time, the polytetrafluoroethylene pad 3 just abuts against the shielding cover 4. Then, the lifting tool on site is connected with the lifting tool connecting beam 2 arranged on the outer surface of the arc-shaped pressing plate, so that the shielding cover 4 can be hoisted. When the bolts for fixing the shielding cover 4 are installed and fixed in the high-altitude butt joint, the position of the lifting tool on the lifting tool connecting beam 2 is adjusted according to the position of the bolt hole, so as to adjust the angle of the shielding cover.

[0033] The above is only a preferred embodiment of the present application, and does not limit the present application. The patent protection scope of the present application is subject to the claims, and any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A shielding device hoisting tool for a DC high-speed parallel switch, characterized in that: It includes an arc-shaped pressure plate, which has two arc-shaped pressure plates and is arranged to be buckled to clamp the corresponding shielding cover. Fixed plates are provided at both ends of the arc-shaped pressure plate. A connecting structure is provided on the fixed plate to connect the two buckled arc-shaped pressure plates. A lifting structure is provided on at least one of the two arc-shaped pressure plates. The lifting structure includes a hanger connecting beam with the same curvature as the arc-shaped pressure plate on which it is located. The hanger connecting beam is spaced apart from the arc-shaped pressure plate on which it is located and has a set length to adjust the turning angle of the shielding cover when lifting the shielding cover.

2. The shielding device hoisting tool for a DC high-speed parallel switch according to claim 1 is characterized in that: The set length of the sling connecting beam is not less than 1 / 3 of the length of the arc-shaped pressure plate on which it is located.

3. A shielding device hoisting tool for a DC high-speed parallel switch according to claim 1 or 2, characterized in that: The sling connecting beam is located at the arch top of the arc-shaped pressure plate where it is located.

4. The shielding device hoisting tool for a DC high-speed parallel switch according to claim 1, characterized in that: The connection structure provided on the fixing plate is a fastening bolt.

5. A shielding device hoisting tool for a DC high-speed parallel switch according to claim 1 or 4, characterized in that: A cushion block is provided at the joint of the fixing plates of the two arc-shaped pressing plates to limit the clamping force of the arc-shaped pressing plates on the shielding cover.

6. The shielding device hoisting tool for a DC high-speed parallel switch according to claim 1, characterized in that: The fixing plate and the arc-shaped pressing plate are an integrated structure.

7. The shielding device hoisting tool for a DC high-speed parallel switch according to claim 1, characterized in that: A protective pad is provided on the inner surface of the arc-shaped pressing plate along the circumferential direction.

8. The shielding device hoisting tool for a DC high-speed parallel switch according to claim 7, characterized in that: The protective pad is a polytetrafluoroethylene protective pad.

9. A shielding device hoisting tool for a DC high-speed parallel switch according to claim 7 or 8, characterized in that: The protection pad is bonded and fixed to the arc-shaped pressing plate where it is located.

10. A shielding device hoisting tool for a DC high-speed parallel switch according to claim 7 or 8, characterized in that: The protection pads are evenly spaced along the length direction of the arc-shaped pressing plate where they are located.

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