Internal working platform suitable for internal and external shape-preserving conversion of basic type and plateau type airplanes

Abstract

The utility model relates to an internal working platform suitable for internal and external shape-preserving conversion of a basic type aircraft and a plateau type aircraft, and belongs to the technical field of aeronautical manufacturing and maintaining.The internal working platform comprises a bottom plate, a rack detachably connected to the bottom plate and a sliding frame slidably connected to the rack, and two first step frames are arranged on the two sides of the sliding frame; a third step frame is arranged at the top of the sliding frame, a lifting control device is arranged on one side of the third step frame, a plurality of sets of sliding devices are arranged at the joints of the two sides of the rack and the two sides of the interior of the sliding frame, and a sliding frame lifting device is arranged at the bottom of the rack and the bottom of the sliding frame; the utility model has the technical effect of adapting to the size difference of different models.

Description

Technical Field

[0001] This application relates to the technical field of aircraft manufacturing and maintenance, and in particular to an internal working platform suitable for conformal conversion between the interior and exterior of basic and high-altitude aircraft. Background Technology

[0002] In aircraft maintenance, modification, and testing operations, internal work platforms are crucial equipment for ensuring the safe and efficient operation of technicians. Due to structural differences between basic and high-altitude aircraft, traditional work platforms often struggle to simultaneously meet the conformal adaptation requirements of both models.

[0003] Traditional platforms are typically designed for a single aircraft type and cannot flexibly adapt to the structural differences between basic and high-altitude aircraft. This leads to frequent equipment replacements during modifications or maintenance, increasing operation time and costs. High-altitude aircraft may experience changes in their internal or external fuselage profile due to the addition of equipment, and existing platforms lack adaptive adjustment capabilities, making them prone to interference with the aircraft structure and affecting operational safety. Furthermore, the more compact equipment layout within the cabin of high-altitude aircraft makes it difficult for traditional platforms to be deployed and maintained stably in the limited space, impacting maintenance efficiency.

[0004] Regarding the aforementioned technologies, the applicant believes that they suffer from poor cross-model compatibility. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an internal working platform suitable for conformal conversion between the interior and exterior of basic and high-altitude aircraft.

[0006] This application provides an internal working platform suitable for conformal conversion between the interior and exterior of basic and high-altitude aircraft, employing the following technical solution:

[0007] An internal working platform suitable for conformal conversion between the interior and exterior of basic and high-altitude aircraft includes a base plate, a frame detachably connected to the base plate, and a sliding frame slidably connected to the frame. Two sets of first step frames are provided on both sides of the sliding frame, and a third step frame is provided on the top of the sliding frame. A lifting control device is provided on one side of the third step frame. Multiple sets of sliding devices are provided at the connection points between the two sides of the frame and the two sides inside the sliding frame. A sliding frame lifting device is provided at the bottom of the frame and the sliding frame.

[0008] By adopting the above technical solution, the first step frame on both sides of the sliding frame and the third step frame on the top form a multi-level, multi-position operating plane, which can cover conformal components at different heights of the aircraft. Multiple sets of sliding devices are set at the connection between the frame on both sides and the interior of the sliding frame, which can distribute the force and reduce friction, ensuring that the sliding frame slides more smoothly on the frame. The sliding frame lifting device can adjust the overall height of the sliding frame and achieve micro-adjustment of the horizontal position in conjunction with the sliding device. In conjunction with the lifting control device on one side of the third step frame, it can adapt to the size differences of different aircraft models, eliminating the need to customize a platform for different aircraft models, reducing equipment costs and reducing the need for operation interruption.

[0009] Preferably, the sliding device includes a linear guide rail, two sets of sliders, and a connecting plate. The linear guide rail is detachably connected to the sliding frame. One end of each set of sliders is mounted on the linear guide rail and is slidably connected to the linear guide rail. The other end of each slider is detachably connected to one side of the connecting plate, and the other side of the connecting plate is detachably connected to the frame.

[0010] By adopting the above technical solution, the linear guide rail is installed on the sliding frame, and one end of the slider is installed on the linear guide rail, which can provide a high-precision linear motion trajectory, ensure that the sliding frame moves accurately on the frame, reduce lateral offset or swaying, and the two sets of sliders slide synchronously on the linear guide rail, which can distribute the weight of the sliding frame and external load, and reduce the pressure at a single point.

[0011] Preferably, the carriage lifting device includes a motor, a main drive device, two sets of slave drive devices, and a lifting platform. The motor base is detachably connected to the frame. The motor is connected to the two sets of slave drive devices through the main drive device. The two sets of slave drive devices are respectively connected to multiple sets of lifting platforms. The motor provides power for the lifting of the lifting platform.

[0012] By adopting the above technical solution, through the main drive device and two sets of slave drive devices, one motor can drive multiple sets of lifting machines simultaneously to achieve synchronous lifting of the sliding frame. This is suitable for large equipment that requires multi-point synchronous lifting. The synchronous operation of multiple sets of lifting machines can distribute the weight of the sliding frame and external load to multiple support points, avoiding excessive force on a single point and improving structural stability and safety.

[0013] Preferably, the main drive device includes two sets of main drive shafts, a main coupling, two sets of first couplings, and a first reversing gearbox. The first reversing gearbox has two sets of output ends and an input end. The motor main coupling is connected to the input end. One set of the output ends is connected to one end of one set of main drive shafts through one set of first couplings. The other set of the output ends is connected to one end of another set of main drive shafts through another set of first couplings. The other end of the drive shaft is connected to the driven device.

[0014] By adopting the above technical solution, the first reversing gearbox receives the power of the motor through a single input end and distributes the power to two sets of main drive shafts through two sets of output ends, realizing the power transmission that is split into two, so that one motor can drive the slave transmission devices in two directions at the same time.

[0015] Preferably, the drive device includes multiple sets of second couplings, two sets of driven shafts, and a second reversing gearbox. The second reversing gearbox has two sets of output ends and input ends. The multiple sets of second couplings are respectively installed on the two sets of output ends and input ends on the second reversing gearbox. One end of each of the two sets of driven shafts is connected to the second couplings at the two sets of output ends, and the other end of the driven shaft is connected to the elevator.

[0016] By adopting the above technical solution, the second reversing gearbox receives power transmitted from the main drive device through a single input end, and then drives two sets of driven shafts through two sets of output ends, ultimately driving multiple sets of lifting machines. This achieves secondary power distribution and can further expand the drive points based on the main drive device, adapting to scenarios where large sliding frames require more support points.

[0017] Preferably, the elevator includes a housing, a worm gear, a worm, a third coupling, a fixed nut, a lead screw, two sets of first bearing devices, and a support plate. The worm is installed inside the housing and is rotatably connected to the housing. One end of the third coupling is connected to the bottom end of the worm, and the other end of the third coupling is connected to the driven shaft. The fixed nut is detachably connected to the worm gear. The two sets of first bearing devices are installed at both ends of the fixed nut and are rotatably connected to the first bearing devices. The first bearing devices are connected to the housing. The lead screw is installed inside the fixed nut and is threadedly engaged with the fixed nut. One side of the support plate is fixedly connected to the top of the lead screw, and the other side of the support plate is fixedly connected to the bottom of the sliding frame. The housing is fixedly connected to the frame.

[0018] By adopting the above technical solution, the horizontal input rotational power from the transmission shaft is converted into the vertical output of the lead screw through the worm gear and worm. The bearing devices at both ends of the fixed nut are directly integrated into the housing. The worm gear transmission can achieve a large reduction ratio, converting the high speed and low torque of the motor into low speed and high torque, so that the lead screw outputs greater thrust. When the worm lead angle is less than the friction angle, the worm gear mechanism has a reverse self-locking characteristic. The threaded engagement between the lead screw and the fixed nut can achieve millimeter-level or even micrometer-level positioning accuracy, meeting the lifting requirements of precision equipment.

[0019] Preferably, a standing platform is provided on the top of the first step frame, the top of the third step frame, and the top of the sliding frames on both sides of the third step frame. A lighting lamp is provided on the standing platform, and plugs for providing power and air supply are provided at both ends of the outer side of the sliding frame and the third step frame.

[0020] By adopting the above technical solution, the standing platforms at the top of the first step frame, the top of the third step frame, and the top of the sliding frame form a multi-level, multi-position operating plane. Operators can work on platforms at different heights and positions as needed. The lighting is set on the standing platform, which can directly illuminate the work area and avoid operational errors caused by insufficient ambient light. The plug plates at both ends of the outer side of the sliding frame and the third step frame are used to provide power and air supply and can be used to connect temporary equipment.

[0021] Preferably, multiple sets of support devices are provided on both sides of the base plate. Each support device includes a handwheel, a screw, a support cylinder, a nut device, a second bearing device, a support housing, and a support base. The second bearing device is detachably connected to one end of the support housing. The screw is installed inside the support housing and is rotatably connected to the support housing via the second bearing device. The handwheel is fixedly connected to one end of the screw. The support cylinder is installed inside the support housing and is slidably connected to the support housing. The nut device is fixedly installed at one end of the support cylinder. The support base is fixedly connected to the other end of the support cylinder and is connected to the screw. Multiple sets of universal wheels are provided on both sides of the bottom of the inner base plate of the support device.

[0022] By adopting the above technical solution, the screw is rotated by handwheel, which drives the nut device to extend and retract the support cylinder, thereby achieving precise adjustment of the support height. The threaded pair of the screw and nut device has a self-locking characteristic, so no additional locking is required after the support is in place, and it can maintain a stable support state. The universal wheels on both sides of the bottom of the base plate allow the equipment to turn and move flexibly.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] Through the main drive device and two sets of driven devices, one motor can drive multiple sets of lifting machines simultaneously to achieve synchronous lifting of the sliding frame. This is suitable for large equipment that requires multi-point synchronous lifting. The synchronous operation of multiple sets of lifting machines can distribute the weight of the sliding frame and external load to multiple support points, avoiding excessive stress on a single point and improving structural stability and safety.

[0025] The standing platforms at the top of the first step frame, the top of the third step frame, and the top of the sliding frame form a multi-level, multi-position operating plane. Workers can work on platforms at different heights and positions as needed. Lighting is installed on the standing platforms to directly illuminate the work area and avoid operational errors caused by insufficient ambient light. The plugs at both ends of the outer side of the sliding frame and the third step frame, which provide power and air supply, can be used to connect temporary equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0027] Figure 2 This is an enlarged view of the structural schematic diagram of the carriage lifting device in the embodiment.

[0028] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the elevator in the embodiment.

[0029] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the support device in the embodiment.

[0030] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Frame; 3. Sliding frame; 31. First step frame; 32. Third step frame; 321. Lifting control device; 33. Standing platform; 331. Lighting lamp; 34. Insert plate; 4. Sliding device; 41. Linear guide rail; 42. Slider; 43. Connecting plate; 5. Sliding frame lifting device; 51. Motor; 52. Main transmission device; 521. Main transmission shaft; 522. Main coupling; 523. First coupling; 524. First reversing gearbox; 53. Slave transmission. Device; 531, Second coupling; 532, Drive shaft; 533, Second reversing gearbox; 54, Elevator; 541, Housing; 542, Worm gear; 543, Worm; 544, Third coupling; 545, Fixing nut; 546, Lead screw; 547, First bearing assembly; 548, Support plate; 6, Support device; 61, Handwheel; 62, Screw; 63, Support cylinder; 64, Nut assembly; 65, Second bearing assembly; 66, Support housing; 67, Support base; 7, Caster wheel. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses an internal working platform suitable for conformal conversion between the interior and exterior of basic and high-altitude aircraft. (Refer to...) Figure 1 and Figure 2The system includes a base plate 1, a frame 2, and a sliding frame 3. The frame 2 is bolted to the base plate 1, and the sliding frame 3 is mounted on the frame 2 and slidably connected to the frame 2. Multiple sliding devices 4 are provided at the connection points between the two sides of the frame 2 and the two sides inside the sliding frame 3. Each sliding device 4 includes a linear guide rail 41, two sets of sliders 42, and a connecting plate 43. The linear guide rail 41 is bolted to the sliding frame 3, and the two sets of sliders 42 are mounted on the linear guide rail 41 and slidably connected to it. The connecting plate 43 is bolted to the sliders 42, and the other side of the connecting plate 43 is bolted to the frame 2. A sliding frame lifting device 5 is provided at the bottom of the frame 2 and the sliding frame 3. The sliding frame lifting device 5 includes a motor 51, a main drive device 52, two sets of driven drive devices 53, and a lift 54. The main drive device 52 includes two sets of main drive shafts 521, a main coupling 522, and two sets of first... The system includes a coupling 523 and a first reversing gearbox 524, a transmission device 53 with multiple sets of second couplings 531, two sets of driven shafts 532, and a second reversing gearbox 533. The base of the motor 51 is bolted to the frame 2. The working end of the motor 51 is connected to the input end of the first reversing gearbox 524 via a main coupling 522. The two output ends of the gears in the first reversing gearbox 524 are connected to the two sets of main drive shafts 521 via two sets of first couplings 523. The input end of the second reversing gearbox 533 is connected to the main drive shaft 521 via a second coupling 531. Multiple sets of second couplings 531 are respectively installed on the two output ends and the input end of the second reversing gearbox 533. One end of the driven shaft 532 is connected to the output end of the second reversing gearbox 533 via a second coupling 531, and the other end of the driven shaft is connected to the elevator 54 to provide power for the longitudinal sliding of the elevator 54.

[0033] Two sets of first step frames 31 are provided on both sides of the sliding frame 3, and a third step frame 32 is provided on the top of the sliding frame 3. A lifting control device 321 is provided on one side of the third step frame 32. The lifting control device 321 is connected to the motor 51 through a professional interface. The lifting control device 321 controls the lifting machine 54 to slide the sliding frame 3 longitudinally. A standing platform 33 is provided on the top of the first step frame 31, the top of the third step frame 32, and the top of the sliding frame 3 on both sides of the third step frame 32. A lighting lamp 331 is provided on the standing platform 33. The lighting lamp 331 directly illuminates the working area. The outer ends of the sliding frame 3 and the third step frame 32 are provided with plug plates 34 for providing power and air supply. The plug plates 34 can be used to connect temporary equipment.

[0034] Reference Figure 3The lifting platform 54 includes a housing 541, a worm gear 542, a worm 543, a third coupling 544, a fixing nut 545, a lead screw 546, two sets of first bearing devices 547, and a support plate 548. The housing 541 is bolted to the frame 2. The worm 543 passes through the housing 541, with one end of the worm 543 connected to one end of the third coupling 544. The other end of the third coupling 544 is connected to the driven shaft 532. The rotation of the driven shaft 532 is driven by the rotational power of the motor 51, which in turn drives the worm 543 to rotate. The worm gear 542 cooperates with the worm 543 for transmission. The outer wall of the fixing nut 545 is keyed to the worm gear 542. The connection is made so that the fixing nut 545 and the worm gear 542 rotate simultaneously. Two sets of first bearing devices 547 are installed at both ends of the outer wall of the fixing nut 545. The first bearing devices 547 are connected to the fixing nut 545. The two sets of first bearing devices 547 are connected to the inside of the housing 541 by bolts, so that the fixing nut 545 is rotatably connected to the housing 541. The lead screw 546 is installed on the fixing nut 545. The lead screw 546 and the fixing nut 545 are threaded together. The rotation of the fixing nut 545 causes the lead screw 546 to move longitudinally. The support plate 548 is fixedly connected to the top of the lead screw 546. The support plate 548 is connected to the bottom of the sliding frame 3 by bolts.

[0035] Reference Figure 1 and Figure 4 Multiple sets of support devices 6 are provided on both sides of the base plate 1. Each support device 6 includes a handwheel 61, a screw 62, a support cylinder 63, a nut device 64, a second bearing device 65, a support housing 66, and a support base 67. The second bearing device 65 is installed on the top of the support housing 66 and is fixedly connected to the support housing 66. The screw 62 is installed inside the support housing 66, and one end of the screw 62 is connected to the second bearing device 65. The screw 62 is rotatably connected to the support housing 66 via the second bearing device 65. The support cylinder 63 is installed inside the support housing 66 and is slidably connected to the support housing 66. A nut device 64 is installed on one end of the support cylinder 63. The other end of the screw 62 is threadedly engaged with the nut device 64. A handwheel 61 is installed on the top of the screw 62. By rotating the handwheel 61, the nut device 64 drives the support cylinder 63 to slide longitudinally, thereby adjusting the support height. A support base 67 is fixedly connected to the other end of the support cylinder 63. Multiple sets of universal wheels 7 are respectively provided on both sides of the bottom of the inner base plate 1 of the support device 6. The universal wheels 7 allow the equipment to turn and move flexibly.

[0036] The working principle of an internal working platform for conformal conversion in basic and high-altitude aircraft, as described in this application, is as follows: The lifting control device 321 sends a control signal to the motor 51 via a specialized interface. After the motor 51 starts, the rotational power at its working end is transmitted to the input end of the first reversing gearbox 524 via the main coupling 522. The first reversing gearbox 524 reverses and distributes the input power, transmitting it to two sets of main drive shafts 521 via two sets of first couplings 523. The rotation of the main drive shafts 521 is transmitted to the input end of the second reversing gearbox 533 via the second coupling 531. The second reversing gearbox 533 further reverses the power... After the reversal and distribution, multiple sets of second couplings 531 transmit power to two sets of driven shafts 532. The driven shafts 532 transmit power to the worm gear 543 of the elevator 54 via a third coupling 544, causing the worm gear 543 to rotate. The worm wheel 542 engages with the worm gear 543 for transmission. The rotation of the worm gear 543 drives the worm wheel 542 to rotate. The outer wall of the fixing nut 545 is keyed to the worm wheel 542, and the fixing nut 545 rotates together with the worm wheel 542. The fixing nut 545 is rotatably connected to the elevator 54 housing 541 via two sets of first bearing devices 547. When the fixing nut 545 rotates, the threaded screw 546 moves longitudinally under the action of the thread force. The support plate 548 at the top of the lead screw 546 is bolted to the bottom of the sliding frame 3. The longitudinal movement of the lead screw 546 directly drives the sliding frame 3 to slide longitudinally. Multiple sets of sliding devices 4 between the sliding frame 3 and the frame 2 ensure smooth guidance of the sliding frame 3 during lifting. The linear guide rail 41 is fixed on the sliding frame 3, and the slider 42 slides along the linear guide rail 41. The connecting plate 43 connects the slider 42 and the frame 2 to ensure the stability of the sliding. Multiple sets of universal wheels 7 on both sides of the bottom of the base plate 1 provide the equipment with flexible movement and turning capabilities. When the equipment needs to be fixed for operation, the handwheel 61 of the support device 6 is rotated to drive the screw 62 to rotate. The screw 62 and the nut on the support cylinder 63 are connected. The device 64 is threaded, and the support cylinder 63 is slidably connected to the support housing 66. Therefore, the rotation of the screw 62 will cause the nut device 64 to drive the support cylinder 63 to slide longitudinally. When the height of the support base 67 is adjusted so that the caster 7 leaves the ground, the equipment can be stably fixed. The standing platform 33 set on the top of the first step frame 31, the top of the third step frame 32, and the top of the sliding frame 3 on both sides of the third step frame 32 provides a working standing space. The lighting lamp 331 on the standing platform 33 directly illuminates the working area. The plug plates 34 at both ends of the outer side of the sliding frame 3 and the third step frame 32, which are used to provide power and air supply, can be used as connection interfaces for temporary equipment.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An internal work platform suitable for use in the inboard-outboard conformal transition of both basic and high altitude aircraft, characterized by: It includes a base plate (1), a frame (2) detachably connected to the base plate (1), and a sliding frame (3) slidably connected to the frame (2). Two sets of first step frames (31) are provided on both sides of the sliding frame (3), and a third step frame (32) is provided on the top of the sliding frame (3). A lifting control device (321) is provided on one side of the third step frame (32). Multiple sets of sliding devices (4) are provided at the connection between the two sides of the frame (2) and the two sides inside the sliding frame (3). A sliding frame lifting device (5) is provided at the bottom of the frame (2) and the sliding frame (3).

2. An internal work platform suitable for use in the inboard and outboard contour conversion of both basic and high altitude aircraft as in claim 1, wherein: The sliding device (4) includes a linear guide rail (41), two sets of sliders (42) and a connecting plate (43). The linear guide rail (41) is detachably connected to the sliding frame (3). One end of each set of sliders (42) is mounted on the linear guide rail (41) and the sliders (42) are slidably connected to the linear guide rail (41). The other end of each slider (42) is detachably connected to one side of the connecting plate (43), and the other side of the connecting plate (43) is detachably connected to the frame (2).

3. An interior work platform suitable for use in converting between conformal interiors and high altitude interiors of aircraft as defined in claim 1, wherein: The carriage lifting device (5) includes a motor (51), a main drive device (52), two sets of slave drive devices (53), and a lift (54). The base of the motor (51) is detachably connected to the frame (2). The motor (51) is connected to the two sets of slave drive devices (53) through the main drive device (52). The two sets of slave drive devices (53) are respectively connected to multiple sets of lifts (54). The motor (51) provides power for the lifting of the lift (54).

4. An interior work platform suitable for use in converting between the interior and exterior contours of a basic and high altitude aircraft according to claim 3, wherein: The main drive unit (52) includes two sets of main drive shafts (521), a main coupling (522), two sets of first couplings (523), and a first reversing gearbox (524). The first reversing gearbox (524) has two sets of output ends and an input end. The main coupling (522) of the motor (51) is connected to the input end. One set of the output ends is connected to one end of one set of main drive shafts (521) through one set of first couplings (523). The other set of the output ends is connected to one end of another set of main drive shafts (521) through another set of first couplings (523). The other end of the drive shaft is connected to the driven device (53).

5. An interior work platform suitable for use in converting between the interior and exterior contours of a basic and high altitude aircraft according to claim 3, wherein: The drive device (53) includes multiple sets of second couplings (531), two sets of drive shafts (532), and a second reversing gearbox (533). The second reversing gearbox (533) has two sets of output ends and input ends. The multiple sets of second couplings (531) are respectively installed on the two sets of output ends and input ends on the second reversing gearbox (533). One end of each of the two sets of drive shafts (532) is connected to the two sets of second couplings (531) at the output ends, and the other end of each drive shaft (532) is connected to the elevator (54).

6. An interior work platform suitable for use in converting between the interior and exterior contours of a basic and high altitude aircraft according to claim 3, wherein: The elevator (54) includes a housing (541), a worm gear (542), a worm (543), a third coupling (544), a fixing nut (545), a lead screw (546), two sets of first bearing devices (547), and a support plate (548). The worm (543) is installed inside the housing (541) and is rotatably connected to the housing (541). One end of the third coupling (544) is connected to the bottom end of the worm (543), and the other end of the third coupling (544) is connected to the drive shaft (532). The fixing nut (545) and the worm gear (542) are detachable. Disconnect the connection. Two sets of the first bearing devices (547) are installed at both ends of the fixing nut (545). The fixing nut (545) is rotatably connected to the first bearing device (547). The first bearing device (547) is connected to the housing (541). The lead screw (546) is installed inside the fixing nut (545). The lead screw (546) and the fixing nut (545) are threadedly engaged. One side of the support plate (548) is fixedly connected to the top of the lead screw (546). The other side of the support plate (548) is fixedly connected to the bottom of the sliding frame (3). The housing (541) is fixedly connected to the frame (2).

7. An interior work platform suitable for use in converting between conformal interiors and high altitude interiors of aircraft as defined in claim 1, wherein: A standing platform (33) is provided on the top of the first step frame (31), the top of the third step frame (32), and the top of the sliding frames (3) on both sides of the third step frame (32). A lighting lamp (331) is provided on the standing platform (33). A plug plate (34) for providing power and air supply is provided at both ends of the outer side of the sliding frame (3) and the third step frame (32).

8. An interior work platform suitable for use in converting between conformal interiors and high altitude interiors of basic and high altitude aircraft according to claim 1, wherein: Multiple sets of support devices (6) are provided on both sides of the base plate (1). Each support device (6) includes a handwheel (61), a screw (62), a support cylinder (63), a nut device (64), a second bearing device (65), a support housing (66), and a support base (67). The second bearing device (65) is detachably connected to one end of the support housing (66). The screw (62) is installed inside the support housing (66). The screw (62) is rotatably connected to the support housing (66) through the second bearing device (65). Next, the handwheel (61) is fixedly connected to one end of the screw (62), the support cylinder (63) is installed inside the support housing (66), the support cylinder (63) and the support housing (66) are slidably connected, the nut device (64) is fixedly installed at one end of the support cylinder (63), the support base (67) is fixedly connected to the other end of the support cylinder (63), the nut device (64) is connected to the screw (62), and multiple sets of universal wheels (7) are respectively provided on both sides of the bottom of the inner bottom plate (1) of the support device (6).

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