Converter valve installation equipment for extra-high voltage converter station

Abstract

The invention discloses extra-high voltage converter station converter valve installation equipment, which comprises an installation platform, two rotating grooves symmetrically formed in the upper end of the installation platform; the folding and unfolding device comprises two track boxes which can be placed in or rotated out of the rotating grooves, when the folding and unfolding device is used, the track boxes are in a vertical state, and track grooves are formed in the opposite sides of the two track boxes; the bearing device comprises a bearing platform capable of vertically ascending and descending and a protective coaming fixedly connected to the upper end of the bearing platform; the two lifting power devices are symmetrically distributed and used for driving the bearing device to ascend and descend. Compared with the prior art, some installation equipment is suspended after the anti-falling related structure is started, an additional rescue mode is needed, rescue waiting is not needed, rescue resources are saved, and meanwhile the emotion of technicians can be stabilized.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power construction, and in particular to a converter valve installation device for an ultra-high voltage converter station. Background Art

[0002] UHV converter stations are essential equipment in modern power systems, used to convert AC to DC so that power can be transferred between different voltage levels. The core part of the converter station is the converter valve, which is the key component for converting AC to DC and the most complex component in the converter station. The UHV converter valve is a power electronic device similar to an ordinary rectifier, but needs to meet higher voltage and power requirements. It consists of multiple single-phase or three-phase bridge rectifier circuits and is equipped with related control circuits and protection circuits. When the input AC voltage reaches a specific level, the converter valve starts to work and converts AC into DC and outputs it to the power grid.

[0003] Installation equipment is required when installing power equipment such as converter valves. The existing installation equipment takes up a large space as a whole, which is not conducive to transportation and storage. In addition, the installation equipment has a liftable lifting platform, but the lifting platform is not equipped with a fall prevention device. Once the structural components connected to the lifting platform are damaged, there is a possibility of falling and damaging power equipment such as converter valves, which poses a safety hazard and also causes huge losses; or there is an fall prevention device, but after the fall prevention device is activated, the equipment to be installed or the technicians are suspended in the air, and they need to wait for rescue, which wastes rescue resources and there is a risk of falling again.

[0004] To this end, we propose a UHV converter station converter valve installation device to solve the above problems. Summary of the invention

[0005] The present invention is intended to provide a UHV converter station converter valve installation device to solve the problems of being difficult to transport and store, having no anti-falling device, or having an anti-falling device but hanging in the air after starting, as mentioned in the background art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A converter valve installation device for a UHV converter station, comprising:

[0008] An installation platform, wherein two rotation grooves are symmetrically provided on the upper end of the installation platform;

[0009] A retractable device, the retractable device comprising two track boxes that can be put into or rotated out of the rotating groove. When in use, the track boxes are in a vertical state, and track grooves are opened on opposite sides of the two track boxes;

[0010] A load-bearing device, the load-bearing device comprising a load-bearing platform that can be lifted vertically and a protective enclosure fixedly connected to the upper end of the load-bearing platform;

[0011] Two lifting power devices, which are symmetrically distributed, are used to drive the carrying device to rise and fall;

[0012] Two anti-falling devices, which are symmetrically distributed, the anti-falling device includes a track plate rotatably connected in the track groove, a pump air assembly is provided on the side of the bearing platform, the pump air assembly includes a rolling groove opened in the bearing platform, an air cavity is opened on the inner wall of the rolling groove, a track wheel and a passive wheel are rotatably arranged in the rolling groove, and the track wheel is in rolling contact with the track plate, and the passive wheel is in rolling contact with the track wheel, a swing rod is hinged at the eccentric part of the front surface of the passive wheel, and the swing rod is unobstructed in the process of rotating with the passive wheel, an active piston is hinged at the other end of the swing rod, and the active piston is in airtight sliding connection with the air cavity, and the air cavity is connected with a one-way air inlet pipe and a one-way air outlet pipe on the side away from the active piston;

[0013] The anti-fall device also includes an elastic telescopic rod assembly symmetrically arranged on the upper end of the mounting platform, the elastic telescopic rod assembly includes a cylinder, a passive piston airtightly slidably connected to the cylinder, and a telescopic rod fixedly connected to the passive piston, the other end of the telescopic rod airtightly penetrates the cylinder and is movably connected to a connecting rod, and the other end of the connecting rod is hinged to the lower end of the track plate, a return spring is arranged on the outer sleeve of the connecting rod, and the two ends of the return spring are respectively fixedly connected to the passive piston and the inner wall of the cylinder, an air hole is arranged at the tail end of the cylinder, at least one air outlet is arranged in the cylinder, and the air outlet is arranged at the passive piston near the penetration of the telescopic rod;

[0014] Wherein, the one-way air outlet pipe is connected with the cylinder barrel through the air pipe, and the connecting point is also arranged close to the penetration point of the telescopic rod.

[0015] Preferably, one end of the telescopic rod is fixedly connected with a plug slot, and the plug slot is movably connected to the connecting rod through a plug device.

[0016] Preferably, the two track boxes are hinged with reinforcing rods on opposite sides, the inner bottom surface of the rotating groove is provided with a sunken groove, and the inner walls on both sides of the sunken groove are symmetrically provided with slots, and the slots are movably connected to the reinforcing rods through a plug-in device.

[0017] Preferably, the plug-in device includes a middle cavity and two side cavities, and the two side cavities are symmetrically and slidably connected with limit plates, the opposite sides of the two limit plates are fixedly connected with insertion rods, the opposite sides of the two limit plates are fixedly connected with tensioning springs, and the opposite sides of the limit plates are fixedly connected with pull ropes, the two pull ropes pass through the interlayer between the side cavity and the middle cavity and merge into one, and then pass through the top of the side cavity and are fixedly connected with the pull plate.

[0018] Preferably, the retractable device further comprises a rotating plate, and universal wheels are mounted on both lower ends of the rotating plate;

[0019] The retracting and unretracting device is connected to a synchronous driving device, which includes an upper gear fixedly connected to the lower end of the track box using a fixed shaft, and a lower gear fixedly connected to the upper end of the rotating plate using a fixed shaft. The upper gear and the lower gear are respectively meshed with an upper tooth plate and a lower tooth plate. The upper tooth plate and the lower tooth plate are jointly fixedly connected to a slide plate. The front and rear sides of the slide plate are symmetrically fixedly connected to a limit strip. The two slide plates are jointly threaded with a bidirectional screw, and the bidirectional screw is connected to a rotating motor through a worm and worm gear pair.

[0020] Preferably, a groove slidably connected to the slide plate and the limit bar is formed at the inner bottom end of the rotating groove, a cavity accommodating the rotating motor and the worm gear pair is formed in the mounting platform, and a bidirectional screw penetrates the interlayer between the groove and the cavity and is rotationally connected thereto.

[0021] Preferably, the lifting power device includes a double limit guide wheel fixedly arranged on the upper end of the track box, and an electric rope winding wheel is fixedly installed on the side of the track box away from the carrying platform. A traction rope is wound around the electric rope winding wheel, and the other end of the traction rope passes through the double limit guide wheel and is connected to the protective enclosure.

[0022] Preferably, one end of the traction rope is fixedly connected with a detachable clip, the detachable clip is hooked with a fixing frame, and the fixing frame is fixedly connected to the upper end of the protective enclosure.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides an anti-fall device. Once a part of the structure of the lifting power device fails or is damaged, causing the load-bearing platform and the protective enclosure to fall out of control, the descending speed will be instantly increased due to gravity, and the pump air assembly quickly presses air into the cylinder through the air pipe, and the air outlet cannot be discharged in a short time. The passive piston drives the lower end of the track plate to move in the direction away from the track box through the telescopic rod and the connecting rod, and the overall situation is that the two track plates are gradually retracted from top to bottom, that is, the distance between the two track plates is gradually reduced from top to bottom, and the track wheel is gradually clamped and the speed is gradually reduced. At the same time, the air entering the cylinder also gradually flows out through the air outlet while the rolling speed of the track wheel is reduced. Repeating the above process, the overall descent speed of the load-bearing platform during the fall is a process of high speed-deceleration-high speed-deceleration, which can ensure the safety of equipment and personnel placed on the load-bearing platform. Compared with some installation equipment in the prior art, which is suspended in the air after the anti-fall related structure is started and requires another rescue method, there is no need to wait for rescue, which saves rescue resources and stabilizes the emotions of technicians.

[0025] 2. The present invention sets a synchronous drive device, and the rotating motor drives the bidirectional screw to rotate through the worm gear pair. The two slides move relative to or opposite to each other under the limit of the limit bar. The slide drives the upper tooth plate and the lower tooth plate to move synchronously, and then drives the upper gear and the lower gear to rotate in opposite directions, thereby realizing the conversion of the horizontal and vertical states of the rotating plate and the track box.

[0026] 3. The present invention provides a reinforcing rod, and both the reinforcing rod and the connecting rod are connected with a plug-in device to ensure the normal rotation of the track box. At the same time, the reinforcing rod can further stabilize the position of the track box when the device is in normal use, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a converter valve installation device for a UHV converter station proposed by the present invention;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of a synchronous driving device for installing converter valves in a UHV converter station proposed by the present invention;

[0029] Figure 3 This is a three-dimensional structural diagram of the sunken groove and slot of a converter valve installation device for a UHV converter station proposed by the present invention;

[0030] Figure 4 This is a structural cross-sectional view of a plug-in device of a converter valve installation device for a UHV converter station proposed by the present invention;

[0031] Figure 5 This is a three-dimensional structural cross-sectional view of a pump gas component of a converter valve installation device for a UHV converter station proposed by the present invention;

[0032] Figure 6 for Figure 1 The enlarged structural diagram at A in the middle;

[0033] Figure 7 This is a three-dimensional structural cross-sectional view of an elastic telescopic rod assembly of a converter valve installation device for an ultra-high voltage converter station proposed by the present invention.

[0034] In the figure: 1 mounting platform, 2 supporting legs, 3 rotating groove, 31 sinking groove, 32 slot, 4 retracting device, 41 track box, 42 track groove, 43 rotating plate, 44 universal wheel, 5 synchronous driving device, 51 slide plate, 52 upper tooth plate, 53 lower tooth plate, 54 upper gear, 55 lower gear, 56 limit strip, 57 worm gear pair, 58 rotating motor, 6 bearing device, 61 bearing platform, 62 protective enclosure, 7 lifting power device, 71 double limit guide wheel, 72 electric rope reel, 73 traction rope, 74 detachable clamp ring , 75 fixed frame, 8 anti-fall device, 81 track plate, 82 connecting rod, 83 pump air assembly, 831 track wheel, 832 passive wheel, 833 air cavity, 834 rocker arm, 835 active piston, 836 one-way air outlet pipe, 837 one-way air inlet pipe, 84 elastic telescopic rod assembly, 841 cylinder, 842 passive piston, 843 telescopic rod, 844 return spring, 845 air outlet, 846 plug-in slot, 9 plug-in device, 91 plug-in rod, 92 pull plate, 93 limit plate, 94 tensioning spring, 95 pull rope, 10 reinforcement rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7 A converter valve installation device for a UHV converter station includes: an installation platform 1, a retracting device 4, a bearing device 6, two lifting power devices 7, which are symmetrically distributed and used to drive the bearing device 6 to rise and fall, and two anti-falling devices 8, which are symmetrically distributed. The anti-falling device 8 effectively avoids the potential safety hazard of the bearing platform 61 accidentally falling.

[0037] Two rotation slots 3 are symmetrically formed at the upper end of the installation platform 1 to provide storage space for the track box 41 .

[0038] Specifically, the retracting device 4 includes two track boxes 41 that can be put into or rotated out of the rotating groove 3. When in use, the track boxes 41 are in a vertical state, and track grooves 42 are opened on opposite sides of the two track boxes 41.

[0039] Specifically, the carrying device 6 includes a carrying platform 61 that can be lifted vertically and a protective enclosure 62 fixedly connected to the upper end of the carrying platform 61, which plays a role of enclosure and protection. Since the track box 41 can be switched, the carrying platform 61 can also move out the two track boxes 41.

[0040] Specifically, the anti-fall device 8 includes a track plate 81 rotatably connected to the track groove 42. More specifically, a pump assembly 83 is provided on the side of the bearing platform 61. The pump assembly 83 effectively utilizes the mechanical energy of the rolling contact between the track wheel 831 and the track plate 81. The pump assembly 83 includes a rolling groove opened on the bearing platform 61, and an air cavity 833 is opened on the inner wall of the rolling groove. A track wheel 831 and a passive wheel 832 are rotatably arranged in the rolling groove, and the track wheel 831 is in rolling contact with the track plate 81, and the passive wheel 832 is in rolling contact with the track wheel 831. When the track box 41 is converted from a horizontal state to a vertical state, the track wheel 831 needs to be in rolling contact with the track plate 81. Corresponding to the position of the track groove 42, a rocker arm 834 is hinged at the eccentric part of the front surface of the passive wheel 832, and the rocker arm 834 is unobstructed in the process of rotating with the passive wheel 832, that is, only one side of the passive wheel 832 is provided with a rotating shaft connected to the rolling groove, and the track wheel 831 is penetrated by a rotating shaft to provide a higher supporting force, and the other end of the rocker arm 834 is hinged with an active piston 835, and the active piston 835 is air-tightly slidably connected to the air cavity 833, and the air cavity 833 is connected to a one-way air inlet pipe 837 and a one-way air outlet pipe 836 on the side away from the active piston 835, and the one-way air inlet pipe 837 and the one-way air outlet pipe 836 are a combination of an embedded pipe and a one-way valve.

[0041] Specifically, the anti-fall device 8 also includes an elastic telescopic rod assembly 84 symmetrically arranged at the upper end of the mounting platform 1, which is used to receive the air pressed by the pump air assembly 83, so that the telescopic rod 843 is passively telescopic. More specifically, the elastic telescopic rod assembly 84 includes a cylinder 841, a passive piston 842 airtightly slidably connected to the cylinder 841, and a telescopic rod 843 fixedly connected to the passive piston 842. The other end of the telescopic rod 843 airtightly penetrates the cylinder 841 and is movably connected to the connecting rod 82, that is, the penetration point of the telescopic rod 843 and the cylinder 841 is airtightly slidably connected, and the other end of the connecting rod 82 is hinged to the lower end of the track plate 81, and a reset spring 844 is provided on the outer sleeve of the connecting rod 82, and the two ends of the reset spring 844 are respectively fixed to the passive piston 842 and the inner wall of the cylinder 841 When the air pressure inside the cylinder 841 is relatively low, the return spring 844 maintains the position of the passive piston 842. When the air pressure inside the cylinder 841 increases instantaneously, the return spring 844 can be stretched. It is worth noting that an air hole can be provided at the tail end of the cylinder 841 to avoid that when the air pressure in the cylinder 841 on the side of the passive piston 842 close to the track box 41 is relatively high, the space of the cylinder 841 on the other side of the passive piston 842 will not be obstructed by the air pressure. At least one air outlet hole 845 is provided in the cylinder 841. The inner diameter of the air outlet hole 845 is relatively small to ensure that the air pressed into the cylinder 841 can flow out through the air outlet hole 845 during the normal lifting process of the carrying platform 61. The air outlet hole 845 is provided at the penetration point of the passive piston 842 close to the telescopic rod 843.

[0042] The one-way air outlet pipe 836 is connected to the cylinder 841 through the air pipe, and air is transported through the air pipe. The connection point is also set close to the penetration point of the telescopic rod 843. Figure 1 It is worth mentioning that a support platform is fixedly arranged at the upper end of the installation platform 1 and between the two elastic telescopic rod assemblies 84 for placing the bearing platform 61 to avoid it pressing the elastic telescopic rod assemblies 84 .

[0043] In this embodiment, the track box 41 has a vertical use state and a horizontal transportation or storage state. This embodiment is explained by taking the track box 41 in the vertical use state as an example. The protective enclosure 62 and the load-bearing platform 61 can be lifted and lowered between the two track boxes 41 under the power of the lifting power device 7. During normal lifting, the track wheel 831 extends into the track groove 42 and rolls with the track plate 81. The track wheel 831 synchronously drives the passive wheel 832 to rotate under the action of friction. The passive wheel 832 drives the active piston 835 to reciprocate in the air cavity 833 through the rocker rod 834, and then the volume of the air cavity 833 on one side of the active piston 835 changes continuously, and the outside air is drawn in through the one-way air inlet pipe 837, and the air is pressed into the cylinder 841 through the one-way air outlet pipe 836 and the air pipe, and discharged through the tiny air outlet hole 845. That is, it should be particularly noted that the air transferred at the normal lifting speed can be discharged by the air outlet hole 845 in time.

[0044] Once part of the structure of the lifting power device 7 fails or is damaged, causing the load-bearing platform 61 and the protective enclosure 62 to descend uncontrollably, the descent speed will increase instantaneously due to gravity. According to the above description, the air can be quickly pressed into the cylinder 841 through the air pipe, and the air outlet 845 cannot be discharged in a short time, which will push the passive piston 842, stretch the reset spring 844, and the telescopic rod 843 moves with the passive piston 842 in the direction away from the track box 41. The telescopic rod 843 drives the lower end of the track plate 81 to move in the direction away from the track box 41 through the connecting rod 82. The overall situation presents that the two track plates 81 are gradually retracted from top to bottom, that is, the distance between the two track plates 81 gradually decreases from top to bottom, and the track wheel 831 is gradually clamped and the speed gradually decreases.

[0045] During the above process, the air entering the cylinder 841 gradually flows out through the air outlet 845 while the rolling speed of the track wheel 831 decreases. According to the above principle, the two track plates 81 will return to the vertical state. It should be noted that when the rising height of the carrying platform 61 is relatively low, the process of the track plate 81 being pulled to tilt - returning to the vertical state - being pulled to tilt again may be only 1-2 times. When the rising height of the carrying platform 61 is relatively high, this process may occur multiple times, but it can ensure that the descending speed of the carrying platform 61 is a high speed-deceleration-high speed-deceleration process, which can ensure the safety of equipment and personnel placed on the carrying platform 61. Compared with some installation equipment in the prior art, which is suspended in the air after the anti-fall related structure is activated and requires additional rescue, this method can save rescue resources without waiting for rescue and stabilize the emotions of technicians.

[0046] Example 2

[0047] On the basis of embodiment 1, there is also provided: Figure 2 The retractable device 4 further includes a rotating plate 43, and universal wheels 44 are installed at both lower ends of the rotating plate 43, and the device can be moved to a corresponding position through the universal wheels 44.

[0048] The retracting and unwinding device 4 is connected to a synchronous driving device 5, which is used to synchronously drive the rotating plate 43 and the track box 41. Specifically, the synchronous driving device 5 includes an upper gear 54 fixedly connected to the lower end of the track box 41 using a fixed shaft, and a lower gear 55 fixedly connected to the upper end of the rotating plate 43 using a fixed shaft. The upper gear 54 and the lower gear 55 are respectively meshed with an upper tooth plate 52 and a lower tooth plate 53. The upper tooth plate 52 and the lower tooth plate 53 are jointly fixedly connected to a slide plate 51. The front and rear sides of the slide plate 51 are symmetrically fixedly connected to a limit strip 56. The two slide plates 51 are jointly threaded with a bidirectional screw, and the bidirectional screw is connected to a rotating motor 58 through a worm and worm gear pair 57. The setting of the worm and worm gear pair 57 and the bidirectional screw ensures that the stability of the rotating plate 43 and the track box 41 after rotation will not be affected by external forces.

[0049] In this embodiment, it should be particularly noted that, when in use, the rotating plate 43 is rotated to a position close to the lower end of the mounting platform 1 and close to each other, the support legs 2 are responsible for support, and the two track boxes 41 are in a vertical state; when transportation and storage are required, the rotating plate 43 is in a vertical state, and the universal wheel 44 contacts the ground while the support legs 2 are suspended in the air, and the track boxes 41 are in a horizontal state, thereby saving storage space in the vertical direction.

[0050] When adjusting the state of the rotating plate 43 and the track box 41, the rotating motor 58 drives the bidirectional screw to rotate through the worm gear pair 57, and the two slides 51 move relative to or opposite to each other under the limit of the limit bar 56. The slide 51 drives the upper tooth plate 52 and the lower tooth plate 53 to move synchronously, and then drives the upper gear 54 and the lower gear 55 to rotate in opposite directions, thereby realizing the conversion of the horizontal and vertical states of the rotating plate 43 and the track box 41.

[0051] In addition, in order to meet the needs of the above structure, the following additional configurations are provided: a groove is provided at the inner bottom end of the rotating groove 3 to be slidably connected to the slide plate 51 and the limit bar 56, a cavity is provided in the mounting platform 1 to accommodate the rotating motor 58 and the worm gear pair 57, and a bidirectional screw penetrates the interlayer between the groove and the cavity and is rotatably connected thereto. In order to more concisely and clearly show the connection method of the above structure, the groove and the cavity are not drawn in the figure.

[0052] Example 3

[0053] On the basis of Example 2, it is also set: Figure 1 Specifically, the lifting power device 7 includes a double-limit guide wheel 71 fixedly arranged at the upper end of the track box 41 to guide the traction rope 73. The side of the track box 41 away from the carrying platform 61 is fixedly installed with an electric rope reel 72, and the traction rope 73 is wound around the electric rope reel 72. The other end of the traction rope 73 passes through the double-limit guide wheel 71 and is connected to the protective enclosure 62. One end of the traction rope 73 is fixedly connected with a detachable clamp ring 74, which is an existing product and can be separated from the fixed frame 75. It will not be described in detail here. The detachable clamp ring 74 is hooked with the fixed frame 75, and the fixed frame 75 is fixedly connected to the upper end of the protective enclosure 62.

[0054] In this embodiment, the electric rope reel 72 winds or releases the traction rope 73, and the traction rope 73 drives the protective enclosure 62 and the load-bearing platform 61 to rise or fall through the detachable clamp ring 74 and the fixed frame 75.

[0055] Example 4

[0056] On the basis of Example 3, it is further configured as follows: Figure 4 and Figure 6 One end of the telescopic rod 843 is fixedly connected with a plug slot 846, and the plug slot 846 is movably connected to the connecting rod 82 through the plug device 9, that is, the connecting rod 82 can be separated from one end of the telescopic rod 843 to meet the purpose of the track box 41 being rotatable.

[0057] Reference Figure 1 and Figure 4The two rail boxes 41 are hinged with reinforcing rods 10 on the opposite sides, the inner bottom surface of the rotating groove 3 is provided with a sunken groove 31, and the inner walls on both sides of the sunken groove 31 are symmetrically provided with slots 32, which are movably connected to the reinforcing rods 10 through the plug-in device 9. When the rail box 41 is in a vertical state, the reinforcing rod 10 can be plugged and matched with the slot 32 through the plug-in device 9 to further stabilize the position of the rail box 41 and improve stability.

[0058] Specifically, refer to Figure 4 The plug-in device 9 includes a middle cavity and two side cavities, which can be set in the reinforcing rod 10 or the connecting rod 82. The two side cavities are symmetrically slidably connected with limit plates 93. The opposite sides of the two limit plates 93 are fixedly connected with plug rods 91, and the opposite sides of the two limit plates 93 are fixedly connected with tension springs 94. The opposite sides of the limit plates 93 are fixedly connected with pull ropes 95. The two pull ropes 95 pass through the interlayer between the side cavity and the middle cavity and merge into one, then pass through the top of the side cavity and are fixedly connected with the pull plate 92.

[0059] In this embodiment, by pulling the pull plate 92 outward, the pull plate 92 drives the two limit plates 93 to move relative to each other through the pull rope 95, and the tensioning spring 94 is compressed, thereby disengaging the insertion rod 91 from the insertion groove 846 or the insertion slot 32.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A converter valve installation device for a UHV converter station, characterized in that: include: An installation platform (1), wherein two rotation grooves (3) are symmetrically provided at the upper end of the installation platform (1); A retractable device (4), the retractable device (4) comprising two track boxes (41) that can be placed in or rotated out of the rotating groove (3); when in use, the track boxes (41) are in a vertical state, and track grooves (42) are provided on opposite sides of the two track boxes (41); A load-bearing device (6), the load-bearing device (6) comprising a load-bearing platform (61) that can be lifted vertically and a protective enclosure (62) that is fixedly connected to the upper end of the load-bearing platform (61); Two lifting power devices (7) are symmetrically distributed and used to drive the carrying device (6) to rise and fall; Two anti-falling devices (8) are symmetrically distributed, the anti-falling device (8) comprises a track plate (81) rotatably connected to the track groove (42), a pump air component (83) is provided on the side of the bearing platform (61), the pump air component (83) comprises a rolling groove opened on the bearing platform (61), an air cavity (833) is opened on the inner wall of the rolling groove, a track wheel (831) and a driven wheel (832) are rotatably arranged in the rolling groove, and the track wheel (831) and the track plate (81) are in rolling contact, and the driven wheel (832) and the track plate (81) are in rolling contact. 832) is in rolling contact with the track wheel (831), a swing rod (834) is hinged at an eccentric position on the front surface of the passive wheel (832), and the swing rod (834) is unobstructed in the process of rotating with the passive wheel (832), an active piston (835) is hinged at the other end of the swing rod (834), and the active piston (835) is airtightly slidably connected to the air cavity (833), and the air cavity (833) is connected to a one-way air inlet pipe (837) and a one-way air outlet pipe (836) on the side away from the active piston (835) in the upper and lower parts; The anti-fall device (8) further comprises an elastic telescopic rod assembly (84) symmetrically arranged at the upper end of the mounting platform (1), the elastic telescopic rod assembly (84) comprising a cylinder (841), a passive piston (842) airtightly slidably connected to the cylinder (841), and a telescopic rod (843) fixedly connected to the passive piston (842), the other end of the telescopic rod (843) airtightly passing through the cylinder (841) and movably connected to the connecting rod (82), and the other end of the connecting rod (82) is One end is hinged to the lower end of the track plate (81); a return spring (844) is provided on the outer sleeve of the connecting rod (82); and the two ends of the return spring (844) are respectively fixedly connected to the passive piston (842) and the inner wall of the cylinder barrel (841); an air hole is provided at the tail end of the cylinder barrel (841); at least one air outlet hole (845) is provided in the cylinder barrel (841); and the air outlet hole (845) is provided at a penetration point of the passive piston (842) close to the telescopic rod (843); The one-way air outlet pipe (837) is connected to the cylinder (841) through the air pipe, and the connection point is also arranged close to the penetration point of the telescopic rod (843).

2. The UHV converter station converter valve installation device according to claim 1, characterized in that: One end of the telescopic rod (843) is fixedly connected to a plug slot (846), and the plug slot (846) is movably connected to the connecting rod (82) via a plug device (9).

3. The UHV converter station converter valve installation device according to claim 1, characterized in that: The two rail boxes (41) are hingedly connected to reinforcing rods (10) on opposite sides, the inner bottom surface of the rotating groove (3) is provided with a sunken groove (31), and the inner walls on both sides of the sunken groove (31) are symmetrically provided with slots (32), and the slots (32) are movably connected to the reinforcing rod (10) through a plug-in device (9).

4. A converter valve installation device for a UHV converter station according to claim 2 or 3, characterized in that: The plug-in device (9) comprises a middle cavity and two side cavities, the two side cavities are symmetrically slidably connected with limit plates (93), the opposite sides of the two limit plates (93) are fixedly connected with insertion rods (91), the opposite sides of the two limit plates (93) are fixedly connected with tension springs (94), the opposite sides of the limit plates (93) are fixedly connected with pull ropes (95), the two pull ropes (95) pass through the interlayer between the side cavity and the middle cavity and merge into one, then pass through the top end of the side cavity and are fixedly connected with the pull plate (92).

5. The UHV converter station converter valve installation device according to claim 1, characterized in that: The retractable device (4) further comprises a rotating plate (43), and universal wheels (44) are mounted on both lower ends of the rotating plate (43); The retractable device (4) is connected to a synchronous drive device (5), the synchronous drive device (5) comprising an upper gear (54) fixedly connected to the lower end of the track box (41) by a fixed shaft, and a lower gear (55) fixedly connected to the upper end of the rotating plate (43) by a fixed shaft, the upper gear (54) and the lower gear (55) respectively meshing with an upper tooth plate (52) and a lower tooth plate (53), the upper tooth plate (52) and the lower tooth plate (53) are jointly fixedly connected to a slide plate (51), the front and rear sides of the slide plate (51) are symmetrically fixedly connected to a limit strip (56), the two slide plates (51) are jointly threadedly connected to a bidirectional screw, and the bidirectional screw is connected to a rotating motor (58) via a worm gear pair (57).

6. The UHV converter station converter valve installation device according to claim 5, characterized in that: The inner bottom end of the rotating groove (3) is provided with a groove slidably connected to the slide plate (51) and the limit strip (56); the mounting platform (1) is provided with a cavity for accommodating the rotating motor (58) and the worm gear pair (57); and the bidirectional screw penetrates the interlayer between the groove and the cavity and is rotationally connected thereto.

7. The UHV converter station converter valve installation device according to claim 1, characterized in that: The lifting power device (7) comprises a double-position limiting guide wheel (71) fixedly arranged on the upper end of the track box (41); an electric rope reel (72) is fixedly installed on the side of the track box (41) away from the carrying platform (61); a traction rope (73) is wound around the electric rope reel (72); the other end of the traction rope (73) passes through the double-position limiting guide wheel (71) and is connected to the protective enclosure (62).

8. The UHV converter station converter valve installation device according to claim 7, characterized in that: One end of the traction rope (73) is fixedly connected to a detachable snap ring (74), the detachable snap ring (74) is hooked to a fixing frame (75), and the fixing frame (75) is fixedly connected to the upper end of the protective enclosure (62).

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