Built-in box transformer upper moving machine cabin cover

Abstract

The application relates to the technical field of wind power generator nacelle covers, in particular to an inner built box transformer upper moving nacelle cover which comprises a nacelle cover assembly, an upper moving cover mechanism arranged on the nacelle cover assembly, an outdoor hoisting mechanism arranged on the upper moving cover mechanism, a combined ladder mechanism arranged in the nacelle cover assembly and an energy supply propulsion mechanism arranged between the nacelle cover assembly and the upper moving cover mechanism. The traditional closed nacelle cover is arranged as an upper moving split structure nacelle body and the upper moving cover mechanism. When the internal instruments or equipment of the nacelle cover appear faults and need to be replaced, the upper moving cover mechanism is lifted upwards, the port at the top of the nacelle body is exposed to the external environment, until the top of the nacelle body is stretched to the maximum, and the instruments or equipment needing to be replaced are directly sent into and out of the port at the top of the nacelle body through the air landing device, so that the repair speed of the workers can be improved during the power-off period of the wind power generator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind turbine nacelle cover, in particular to an internal box transformer up-moving nacelle cover. BACKGROUND

[0002] The nacelle cover is an important component of the wind turbine generator set, which is a protective structure of the wind turbine generator set, so that the wind turbine generator set can work normally in severe weather environment, and various instruments and equipment inside the nacelle cover are protected.

[0003] The existing nacelle cover has dozens of components, so the nacelle cover needs to be pre-assembled on the ground to form a whole and then hoisted to the top of the wind turbine. This nacelle cover has strong sealing performance, but also has certain disadvantages. Once the internal instruments or equipment of the nacelle cover fail and need to be replaced as a whole, and the normal operation of the internal elevator cannot be realized by relying on the internal energy of the wind turbine, the instruments or equipment inside the nacelle cover are difficult to disassemble, which not only increases the cost of maintenance, but also increases the difficulty of repair. In addition, the nacelle cover is in a high-altitude state, and the difficulty of repair work by workers inside the nacelle cover will further increase when the external environment temperature continuously rises.

[0004] In view of this, an internal box transformer up-moving nacelle cover is designed to solve the above problems. SUMMARY

[0005] The present application aims to solve one of the technical problems in the prior art or related art.

[0006] To this end, the technical solution adopted by the present application is as follows:

[0007] An internal box transformer up-moving nacelle cover, comprising a nacelle cover assembly, an up-moving cover mechanism arranged on the nacelle cover assembly, an outdoor hoisting mechanism arranged on the up-moving cover mechanism, a combined ladder mechanism arranged in the nacelle cover assembly, and an energy supply propulsion mechanism arranged between the nacelle cover assembly and the up-moving cover mechanism; the nacelle cover assembly comprises a nacelle main body and two cover plates arranged at both ends of the nacelle main body, and a recess is formed in the inner wall of the cover plate; the up-moving cover mechanism comprises two side wing cover plates arranged at the top of the two cover plates and a top cover plate arranged between the two side wing cover plates, and a fixed block is arranged on the inner wall of the side wing cover plate; the energy supply propulsion mechanism comprises a sliding rail arranged in the recess, a suspension bracket movably arranged in the sliding rail, two groups of hydraulic components arranged at the top of the inner cavity of the nacelle main body, a clamp arranged in the two groups of hydraulic components, a hydraulic sub-rod in the clamp movably arranged in the suspension bracket, an inclined rail arranged at the bottom end of the suspension bracket, a supporting plate movably arranged in the inclined rail, and a horizontal moving fixed block fixedly arranged on the inner wall of the side wing cover plate; the horizontal moving fixed block is movably arranged outside the fixed block.

[0008] The outdoor hoisting mechanism can be further configured to comprise a base installed inside the side wing cover plate, a first base movably installed in the base, a bolt arranged in the first base, a second base movably installed in the first base, a truss installed at the top end of the second base, and a winding disc movably installed at the outer end of the truss.

[0009] The hoisting rope is wound on the winding disc.

[0010] The outdoor hoisting mechanism is used for providing a support platform for workers to be suspended outside the cabin.

[0011] The energy supply and propulsion mechanism can be further configured to comprise four limiting clamps installed on the inner wall of the protective outer plate, two limiting clamps forming a set, and the limiting clamps in the set being used for protecting the lifting of the support plate.

[0012] The energy supply and propulsion mechanism further comprises a machine box installed in the hole in the support plate, a motor installed in the machine box, and a gear installed on the transmission shaft of the motor.

[0013] The top of the transverse fixed block is provided with a rack, and the gear is adapted to engage with the rack, and the transverse fixed block after transverse movement is used for providing side movement energy for the upward cabin cover mechanism to ensure that the upward cabin cover mechanism forms a hovering platform after side movement.

[0014] The machine cover assembly can be further configured to comprise two protective outer plates, and the two protective outer plates are respectively installed at the top of the two cabin cover plates.

[0015] The protective outer plate is adapted to penetrate into the slot on the outside of the side wing cover plate.

[0016] The upward cabin cover mechanism can be further configured to comprise two first limiting wheels.

[0017] One side of the bottom of the side wing cover plate is provided with a rectangular slot, and the two first limiting wheels are installed on the two inner walls of the rectangular slot.

[0018] The combined ladder mechanism can be further configured to comprise a fixed ladder fixedly installed in the machine cabin body, vertical grooves formed in the vertical columns at the two ends of the fixed ladder, compression springs arranged in the vertical grooves, two second limiting wheels fixedly installed at the top of the fixed ladder, two third limiting wheels installed at the bottom of the fixed ladder, a sliding block movably installed in the vertical groove, a movable ladder fixedly installed outside the sliding block, and two fourth limiting wheels installed at the top of the movable ladder.

[0019] The fourth limiting wheel and the first limiting wheel are connected by a cable, and the cable passes through the second limiting wheel and the third limiting wheel in sequence.

[0020] The application can be further configured in a preferred example that the upward moving hatch mechanism further comprises a protective frame installed on the top of the two side wing cover plates.

[0021] The protective frame is welded by four column legs and a plurality of cross frames.

[0022] The application can be further configured in a preferred example that the bottom of the horizontal moving fixed block is provided with a sliding channel, and the sliding head on the top of the supporting plate is adapted to penetrate into the sliding channel on the bottom of the horizontal moving fixed block.

[0023] The inside of the horizontal moving fixed block is provided with a rectangular horizontal groove.

[0024] The application can be further configured in a preferred example that the energy supply propulsion mechanism further comprises two springs, and the two springs are respectively arranged in the interiors of the two sliding rails.

[0025] One end of the spring is pressed against the inner wall of the groove, and the other end of the spring is pressed against the end head on the bottom of the suspension.

[0026] The application can be further configured in a preferred example that a plurality of evenly distributed studs are arranged in the end plates at the two ends of the top cover plate, the studs are adapted to penetrate into the outside of the side wing cover plate, and nuts are arranged on the studs to press the side wing cover plate.

[0027] The top of the top cover plate is fixedly installed with a bearing column for providing effective support for the truss.

[0028] By adopting the above technical scheme, the application has the following beneficial effects:

[0029] 1. The application sets the traditional closed machine cabin cover as an upward moving cabin body and an upward moving hatch mechanism, when the instruments or equipment inside the cabin cover fail and need to be replaced, the upward moving hatch mechanism is lifted upward, the port on the top of the cabin body is exposed to the outside environment, until the top of the cabin body is extended to the maximum, and the instrument or equipment to be replaced is directly sent in and out from the port on the top of the cabin body by cooperating with the air landing device, so that the work speed of the staff during the power-off period of the wind power generator can be improved.

[0030] 2. The application sets an energy supply propulsion mechanism between the two hatch cover plates and the upward moving hatch mechanism, after the top cover plate is lifted upward, the running motor is used to reverse the transmission gear, finally the horizontal moving fixed block pushes the upward moving hatch mechanism to move horizontally, and finally the upward moving hatch mechanism after horizontal movement is located directly above the cabin body, at this time, an effective hovering platform can be formed directly above the cabin body, so that the high-altitude hoisting device and the instrument can be conveniently and safely placed.

[0031] 3. The application sets up an outdoor hoisting mechanism on the upper moving hatch cover mechanism, when there is a failure outside the machine cabin body and manual work is needed outside the cabin, the first base is adjusted to move outward along the base, and finally the winding disc can be moved to the outside of the cabin body, and the winding disc can be unwound according to the area of the worker's suspended work, so as to provide a high-altitude suspension platform for the worker, thereby improving the worker's safe operation. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic diagram for use of the application;

[0033] Figure 2 It is an explosion schematic diagram of the application;

[0034] Figure 3 It is a schematic diagram of the machine cover assembly of the application;

[0035] Figure 4 It is an explosion schematic diagram of the combined ladder mechanism of the application;

[0036] Figure 5 It is a schematic diagram of the upper moving hatch cover mechanism of the application;

[0037] Figure 6 It is an enlarged schematic diagram of A in the application; Figure 5

[0038] Figure 7 It is an explosion schematic diagram of the outdoor hoisting mechanism of the application;

[0039] Figure 8 It is a partial explosion schematic diagram of the application; Figure 7

[0040] Figure 9 It is a schematic diagram of the energy supply propulsion mechanism of the application;

[0041] Figure 10 It is a partial explosion schematic diagram of the application; Figure 9

[0042] Figure 11 It is an enlarged schematic diagram of B in the application. Figure 9 REFERENCE SIGNS:

[0043] 100, machine cover assembly; 110, machine cabin body; 120, hatch cover plate; 130, protective outer plate; 140, groove;

[0044] 200, upper moving hatch cover mechanism; 210, side wing cover plate; 220, top cover plate; 230, guard frame; 240, fixed block; 250, first limiting wheel; 260, bearing column;

[0045]

[0046] ​​​​300, outdoor hoisting mechanism; 310, base; 320, first base; 330, bolt; 340, second base; 350, truss; 360, winding disc;

[0047] 400, combined ladder mechanism; 410, fixed ladder; 420, vertical groove; 430, second limiting wheel; 440, third limiting wheel; 450, movable ladder; 460, sliding block; 470, fourth limiting wheel; 480, cable; 490, compression spring;

[0048] 500, energy supply propulsion mechanism; 510, clamp; 520, hydraulic component; 530, sliding rail; 540, spring; 550, suspension; 560, inclined rail; 570, support plate; 5701, limiting clamp; 580, transverse fixed block; 590, machine box; 5901, motor; 5902, gear. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the specific embodiments and the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0050] It should be understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0051] Some embodiments of the present application provide an inner box variable upper moving machine cabin cover.

[0052] Embodiment 1:

[0053] In combination with Figures 1 to 10 As shown in the drawings, the present application provides an inner box variable upper moving machine cabin cover, which comprises a machine cover assembly 100, an upper moving cabin cover mechanism 200 arranged on the machine cover assembly 100, an outdoor hoisting mechanism 300 arranged on the upper moving cabin cover mechanism 200, a combined ladder mechanism 400 arranged in the machine cover assembly 100, and an energy supply propulsion mechanism 500 arranged between the machine cover assembly 100 and the upper moving cabin cover mechanism 200. The upper moving cabin cover mechanism 200 provides a hovering platform for the machine cover assembly 100 after being lifted and transversely moved upward, the combined ladder mechanism 400 provides an effective climbing carrier for the transfer of workers to the hovering platform, the outdoor hoisting mechanism 300 provides an outdoor suspension support platform for workers, and the energy supply propulsion mechanism 500 provides stable support and extension kinetic energy for the lifting and lateral movement of the upper moving cabin cover mechanism 200.

[0054] The hood assembly 100 comprises a cabin body 110 and two protective outer plates 130, and two cabin cover plates 120 installed at both ends of the cabin body 110, and the inner wall of the cabin cover plate 120 is provided with a groove 140, and the two protective outer plates 130 are respectively installed on the top of the two cabin cover plates 120;

[0055] The protective outer plate 130 is adapted to penetrate into the slot on the outer side of the wing cover plate 210;

[0056] The upper cabin cover mechanism 200 comprises two first limiting wheels 250, two wing cover plates 210 arranged on the top of the two cabin cover plates 120, and a top cover plate 220 installed between the two wing cover plates 210, and the inner wall of the wing cover plate 210 is provided with a fixed block 240;

[0057] One side of the bottom of the wing cover plate 210 is provided with a rectangular slot, and the two first limiting wheels 250 are installed on the inner walls of the rectangular slot, a protective frame 230 installed on the top of the two wing cover plates 210, the protective frame 230 is welded by four column legs and a plurality of cross frames, a plurality of threaded studs are arranged in the end plate at both ends of the top cover plate 220, and the threaded studs are adapted to penetrate into the outside of the wing cover plate 210, a nut is arranged on the threaded stud, the nut is adapted to press the wing cover plate 210, and a bearing column 260 is fixedly installed on the top of the top cover plate 220;

[0058] The energy supply and propulsion mechanism 500 comprises a sliding rail 530 installed in the groove 140, a suspension 550 movably installed in the sliding rail 530, two groups of hydraulic components 520 installed on the top of the inner cavity of the cabin body 110, a clamp 510 installed in the two groups of hydraulic components 520, a hydraulic sub-rod in the clamp 510 installed in the suspension 550, an inclined rail 560 installed at the bottom end of the suspension 550, a supporting plate 570 movably installed in the inclined rail 560, and a horizontal moving fixed block 580 fixedly installed on the inner wall of the wing cover plate 210; the inclined rail 560 serves as a guide, and the left end thereof is fixedly connected with the suspension 550, and the right end thereof is suspended and not connected with other structures.

[0059] The bottom of the horizontal moving fixed block 580 is provided with a sliding channel, and the sliding head on the top of the supporting plate 570 is adapted to penetrate into the sliding channel in the bottom of the horizontal moving fixed block 580;

[0060] The inside of the horizontal moving fixed block 580 is provided with a rectangular horizontal groove;

[0061] The limiting clamps 5701 are installed on the inner wall of the protective outer plate 130, and the number of the limiting clamps 5701 is four, two limiting clamps 5701 form a group, and one group of limiting clamps 5701 is used to protect the lifting of the support plate 570, the case 590 is installed in the inner hole of the support plate 570, the motor 5901 is installed in the case 590, and the gear 5902 is installed on the transmission shaft in the motor 5901, wherein the rod segment at the bottom of the support plate 570 is inserted into the slide way in the inner part of the inclined rail, after the inclined rail 560 is transversely moved, the support plate 570 at the bottom is pressurized by the slide way, and finally the rod segment at the bottom of the support plate 570 rises along the slide way, at this time the support plate 570 is also lifted;

[0062] The top of the transverse moving fixed block 580 is provided with a rack, and the gear 5902 is adapted to engage with the rack, and the transverse moving fixed block 580 after transverse moving is used to provide side moving energy for the upward moving cabin cover mechanism 200, so as to ensure that the upward moving cabin cover mechanism 200 forms a hovering platform after side moving;

[0063] Two springs 540 are arranged in the inner part of the two slide rails 530 respectively;

[0064] One end of the spring 540 is pressurized on the inner wall of the groove 140, and the other end of the spring 540 is pressurized on the end head at the bottom of the suspension 550.

[0065] When the instruments in the inner part of the cabin main body 110 fail, in order to realize the overall repair and replacement of the instruments in the inner part of the cabin main body 110 in the air, therefore, the standby energy and the system control hydraulic piece 520 are operated, with the expansion of the hydraulic sub-rod in the hydraulic piece 520 outward, the suspension 550 supported by the two slide rails 530 is pressurized and transversely moved, at the same time, the two inclined rails 560 installed at both ends of the suspension 550 apply extrusion force to the two support plates 570, and finally the two support plates 570 push the two transverse moving fixed blocks 580 and the upward moving cabin cover mechanism 200 to rise as a whole;

[0066] After the upward moving cabin cover mechanism 200 rises as a whole, the motor 5901 can be operated, and when the gear 5902 driven by the motor 5901 is reversely rotated, the gear 5902 engages with the transmission transverse moving fixed block 580 to move horizontally, and finally the upward moving cabin cover mechanism 200 after rising can be horizontally pushed, at this time the top end of the cabin main body 110 can be maximally exposed, and the hovering platform formed by the side moving of the upward moving cabin cover mechanism 200 can provide a support platform for the high-altitude hoisting device, and also can provide a temporary support platform for the replaced instruments; in this process, the inner cavity of the cabin main body 110 is illuminated by the external environment light, and the oxygen content in the inner cavity of the cabin main body 110 is also increased, so as to ensure the safety of the workers in the inner cavity of the cabin main body 110 during the repair work.

[0067] Embodiment 2:

[0068] In combination Figures 3 to 7 As shown in the figure, on the basis of Embodiment 1, the outdoor hoisting mechanism 300 comprises a base 310 installed inside the side wing cover plate 210, a first base 320 movably installed inside the base 310, a bolt 330 arranged inside the first base 320, a second base 340 movably installed inside the first base 320, a truss 350 installed at the top end of the second base 340, and a winding disc 360 movably installed at the outer end of the truss 350, and the load-bearing column 260 is used to provide effective support for the truss 350;

[0069] The hoisting rope is wound on the winding disc 360;

[0070] The outdoor hoisting mechanism 300 is used to provide an out-of-cabin suspension support platform for workers.

[0071] Specifically, when the external area of the cabin body 110 needs to be maintained and repaired, the first base 320 is adjusted to move horizontally along the top of the base 310, at which time the height-adjusted second base 340 and the truss 350 can move outward, and the winding disc 360 arranged at the outer end of the truss 350 can release the hoisting rope outward, and the released hoisting rope can provide an outdoor suspension support for workers, thereby providing protection for workers working outside the cabin.

[0072] Embodiment 3:

[0073] In combination Figures 2 to 7 As shown in the figure, on the basis of Embodiment 1, the combined ladder mechanism 400 comprises a fixed ladder 410 fixedly installed inside the cabin body 110, vertical grooves 420 are formed in the columns at both ends of the fixed ladder 410, compression springs 490 are arranged inside the vertical grooves 420, two second limiting wheels 430 are fixedly installed at the top of the fixed ladder 410, two third limiting wheels 440 are installed at the bottom of the fixed ladder 410, a sliding block 460 is movably installed inside the vertical grooves 420, a movable ladder 450 is fixedly installed outside the sliding block 460, and two fourth limiting wheels 470 are installed at the top of the movable ladder 450;

[0074] The fourth limiting wheels 470 and the first limiting wheels 250 are connected by a cable 480, and the cable 480 passes through the second limiting wheels 430 and the third limiting wheels 440 in sequence.

[0075] Specifically, in the initial state, the top end of the fixed ladder 410 and the top end of the movable ladder 450 are fitted in the rectangular groove at the bottom of the side wing cover plate 210. When the side wing cover plate 210 is pushed upward and transversely moved along the side direction, the pull rope 480 connected to the first limiting wheel 250 will be pulled under the pressure of the second limiting wheel 430 and the third limiting wheel 440, and the fourth limiting wheel 470 and the movable ladder 450 will be quickly lowered. Finally, the movable ladder 450 after being stretched downward cooperates with the fixed ladder 410 to form a long ladder structure, and when the top port of the cabin body 110 is completely exposed, the movable ladder 450 and the fixed ladder 410 of the long ladder structure can facilitate workers to quickly climb;

[0076] With the reset of the upward moving cabin cover mechanism 200, the two compressed springs 490 will quickly lift the movable ladder 450 upward.

[0077] The working principle and use process of the application: after the wind turbine is installed, the cabin cover is usually in a high altitude state. Once the wind turbine fails and needs to be repaired in time;

[0078] Therefore, when the wind turbine fails and needs to be repaired in time, by setting an independent energy supply and control system inside the cabin body 110 to control the operation of the hydraulic part 520, with the hydraulic sub-rod in the clamp 510 extending outward, the suspension 550 installed at the outer end of the hydraulic sub-rod will be transversely moved along the two slide rails 530, and the two inclined rails 560 fixed at the two ends of the suspension 550 will also be moved, and the bottom end of the support plate 570 will be pressurized and guided by the guide of the slide way in the inclined rail 560. Finally, the two support plates 570 will uniformly rise under the limiting of the two sets of limiting clamps 5701, and at this time, the transverse fixed block 580 fixed at the top end of the support plate 570 will also be lifted upward;

[0079] With the continuous upward movement of the two transverse fixed blocks 580, the two fixed blocks 240 movably installed in the two transverse fixed blocks 580 will be subjected to an upward pushing force, and the combined two side wing cover plates 210 and the top cover plate 220 will be lifted upward from the top end of the cabin body 110. Finally, the two side wing cover plates 210 and the top cover plate 220 will be unfolded with a large enough gap at the top end of the cabin body 110, and the inner cavity of the cabin body 110 will be exposed to the outside environment. At the same time, the ambient light will shine into the cabin body 110, thereby facilitating the repair of the workers to provide lighting. In addition, the inner cavity of the cabin body 110 is directly connected with the outside environment, and the oxygen content in the inner cavity will also increase, thereby providing sufficient safety guarantee for the workers working at high altitude;

[0080] Meanwhile, as the top cover plate 220 continues to lift upward, the motor 5901 controlled by the standby system reverses the gear 5902, and the horizontal moving fixed block 580 will move horizontally along the outside of the fixed block 240, thereby expanding the gap of the top end port of the cabin body 110, at the same time, the inhaul cable 480 connected to the first limiting wheel 250 will be pulled, and the other end of the inhaul cable 480 will pull the fourth limiting wheel 470 down, and finally the movable ladder 450 will be lowered and form a long ladder structure with the fixed ladder 410, to facilitate the staff to climb up along the long ladder;

[0081] When the staff climbs to the top of the cabin body 110, they can stand on the top of the top cover plate 220, and the guard frame 230 will provide safety protection for the workers, the height of the second base 340 is controlled by the tension bolt 330, then the first base 320 is slid horizontally along the base 310, and finally the winding disc 360 arranged at the outer end of the second base 340 can lower the sling, to facilitate the workers to provide suspension support for the work of the surrounding parts of the cabin cover;

[0082] At the same time, the top end of the cabin body 110 is in an exposed state, which also facilitates the direct channel of the air landing parts, thereby improving the speed and efficiency of the repair of the internal elements of the cabin body 110.

[0083] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An on-board machine cabin cover for an on-board box transformer, comprising a machine cover assembly (100), characterized in that, The utility model also includes an upper cabin cover mechanism (200) arranged on the hood assembly (100), an outdoor hoisting mechanism (300) arranged on the upper cabin cover mechanism (200), a combined ladder mechanism (400) arranged in the hood assembly (100) and an energy supply propulsion mechanism (500) arranged between the hood assembly (100) and the upper cabin cover mechanism (200); The hood assembly (100) comprises a cabin body (110) and two cabin cover plates (120) mounted at two ends of the cabin body (110), and the inner wall of the cabin cover plate (120) is provided with a groove (140); The energy supply propulsion mechanism (500) comprises a sliding rail (530) mounted in the groove (140), a suspension (550) movably mounted in the sliding rail (530), two groups of hydraulic components (520) mounted at the top of the inner cavity of the cabin body (110), a clamp (510) mounted in the two groups of hydraulic components (520), a hydraulic sub-rod in the clamp (510) mounted in the suspension (550), an inclined rail (560) mounted at the bottom end of the suspension (550), a supporting plate (570) movably mounted in the inclined rail (560) and a horizontal movement fixing block (580) fixedly mounted on the inner wall of the side wing cover plate (210); The horizontal movement fixing block (580) is movably mounted outside the fixing block (240).

2. The built-in box transformer upper moving machine compartment cover according to claim 1, characterized in that, The upper cabin cover mechanism (200) comprises two side wing cover plates (210) arranged at the top of the two cabin cover plates (120) and a top cover plate (220) mounted between the two side wing cover plates (210), and the inner wall of the side wing cover plate (210) is provided with a fixing block (240); Two first limiting wheels (250) are arranged on one side of the bottom of the side wing cover plate (210).

3. The upper moving machine cabin cover of a built-in box transformer according to claim 2, characterized in that, The outdoor hoisting mechanism (300) comprises a base (310) mounted in the side wing cover plate (210), a first base (320) movably mounted in the base (310), a bolt (330) arranged in the first base (320), a second base (340) movably mounted in the first base (320), a truss (350) mounted at the top end of the second base (340) and a winding disc (360) movably mounted at the outer end of the truss (350); The winding disc (360) is provided with a hoisting cable wound thereon; The outdoor hoisting mechanism (300) is used for providing a support platform for workers to be suspended outside the cabin.

4. The upper moving machine cabin cover of a built-in box transformer according to claim 2, characterized in that, The energy supply propulsion mechanism (500) further comprises four limiting clamps (5701) mounted on the inner wall of the protective outer plate (130), two limiting clamps (5701) form a group, and the limiting clamps (5701) in one group are used for protecting the lifting of the supporting plate (570); The energy supply propulsion mechanism (500) further comprises a machine box (590) mounted in the inner hole of the supporting plate (570), a motor (5901) mounted in the machine box (590) and a gear (5902) mounted on the transmission shaft in the motor (5901). The top of the horizontal moving fixed block (580) is provided with a rack, and a gear (5902) is adapted to engage with the rack. The horizontal moving fixed block (580) after horizontal movement is used to provide side moving energy for the upward moving hatch cover mechanism (200) to ensure that the upward moving hatch cover mechanism (200) forms a hovering platform after side movement.

5. The internally installed box transformer upper moving machine compartment cover according to claim 2, characterized in that, The end plates at both ends of the top cover plate (220) are provided with a plurality of evenly distributed studs, and the studs are adapted to penetrate to the outside of the wing cover plate (210), and nuts are arranged on the studs to press the wing cover plate (210); The top of the top cover plate (220) is fixedly installed with a bearing column (260) for providing effective support for the truss (350).

6. The internally installed box transformer upper moving machine compartment cover according to claim 1, characterized in that, The cowling assembly (100) further comprises two protective outer plates (130), and the two protective outer plates (130) are respectively installed on the top of the two hatch cover plates (120). The protective outer plate (130) is adapted to penetrate into the notch outside the wing cover plate (210).

7. The internally installed box-type transformer upper moving machine compartment cover according to claim 1, characterized in that, The combined ladder mechanism (400) comprises a fixed ladder (410) fixedly installed in the cabin body (110), vertical grooves (420) are formed in the columns at both ends of the fixed ladder (410), compression springs (490) are arranged in the vertical grooves (420), two second limit wheels (430) are fixedly installed on the top of the fixed ladder (410), two third limit wheels (440) are installed at the bottom of the fixed ladder (410), a sliding block (460) is movably installed in the vertical groove (420), a movable ladder (450) is fixedly installed outside the sliding block (460), and two fourth limit wheels (470) are installed on the top of the movable ladder (450). The fourth limit wheel (470) and the first limit wheel (250) are connected by a cable (480), and the cable (480) passes through the second limit wheel (430) and the third limit wheel (440) in sequence.

8. The internally installed box transformer upper moving machine compartment cover according to claim 1, characterized in that, The upward moving hatch cover mechanism (200) further comprises a protective frame (230) installed on the top of the two wing cover plates (210). The protective frame (230) is welded by four column legs and a plurality of cross frames.

9. The internally installed box transformer upper moving machine compartment cover according to claim 1, characterized in that, The bottom of the horizontal moving fixed block (580) is provided with a slide, and the sliding head at the top of the supporting plate (570) is adapted to penetrate into the slide at the bottom of the horizontal moving fixed block (580). The inside of the horizontal moving fixed block (580) is provided with a rectangular transverse groove.

10. The internally installed box transformer upper moving machine compartment cover according to claim 1, characterized in that, The energy supply propulsion mechanism (500) further comprises two springs (540), and the two springs (540) are respectively arranged in the interiors of the two slide rails (530). One end of the spring (540) is pressed against the inner wall of the groove (140), and the other end of the spring (540) is pressed against the end head at the bottom of the suspension (550).

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