Telescopic member and flexible platform

Abstract

The present invention relates to a telescopic member and a flexible platform, wherein a fixed rail has a housing cavity with an opening at the distal end; a slide rail is inserted into the housing cavity, wherein two side walls of the slide rail are provided with convex parts and concave parts, the convex parts are slidably matched with the cavity wall of the housing cavity, a cavity is formed between the inner wall of the concave part and the cavity wall of the housing cavity, the top of the slide rail is gap-matched with the cavity wall of the housing cavity, and the bottom of the slide rail is slidably matched with the cavity wall of the housing cavity; a driving device has a fixed end connected to the fixed rail and a movable end with an adjustable telescopic distance, the slide rail is connected to the movable end and moves with the movable end so that the distal part of the slide rail extends outward or retracts into the opening.

Description

Technical Field

[0001] The invention relates to a tooling equipment, in particular to a telescopic part and a flexible platform. Background Art

[0002] In the production or maintenance process of some large-scale vehicles or equipment, special tooling is required. These toolings are highly specialized and generally use a fixed steel frame structure as the main body. The steel frame structure is basically compatible with the size of the vehicles and equipment to be maintained. When the model and specifications of the vehicles or equipment change, they cannot be used again and special tooling needs to be re-made according to needs, which is not only time-consuming and labor-intensive, but also various types of tooling occupy a large space and are inconvenient to store. Summary of the invention

[0003] The purpose of the present invention is to provide a flexible platform in view of the deficiencies in the prior art. The platform has a simple and compact structure, can realize rapid and reliable construction of the working platform, can be applied to different traffic operations and equipment, has strong versatility, can greatly save operation time and cost, and can save a large amount of storage space.

[0004] The object of the present invention is achieved in this way: a telescopic member, comprising:

[0005] A fixed rail, wherein the fixed rail has a receiving cavity with an opening at a distal end;

[0006] A slide rail is arranged in the accommodating cavity,

[0007] Wherein, the two side walls of the slide rail are provided with a convex part and a concave part, the convex part is slidably matched with the cavity wall of the accommodating cavity, and a cavity is formed between the inner wall of the concave part and the cavity wall of the accommodating cavity.

[0008] The top of the slide rail is in clearance fit with the wall of the accommodating chamber, and the bottom of the slide rail is in sliding fit with the wall of the accommodating chamber;

[0009] The driving device has a fixed end connected to the fixed rail and a movable end with an adjustable telescopic distance. The slide rail is connected to the movable end and moves with the movable end to make the distal part of the slide rail extend outward or retract into the opening.

[0010] The slide rail comprises:

[0011] A strip-shaped lower support member, the bottom of which is slidably matched with the bottom wall of the accommodating cavity along the extending direction of the slide rail;

[0012] A strip-shaped upper support member is installed on the upper end of the lower support member, and the outwardly extending sections on both sides of the upper support member form convex parts, and the end walls of the outwardly extending sections are slidably matched with the wall of the accommodating cavity;

[0013] Wherein, the side wall of the lower support member and the side wall of the adjacent convex portion form a concave portion.

[0014] The gap between the slide rail and the top wall of the accommodating cavity is greater than zero, and the slide rail can swing around the width direction of the slide rail, so that when the slide rail is tilted, the rear end of the slide rail swings upward and abuts against the top wall of the accommodating cavity.

[0015] The fixed rail is made of a steel or aluminum profile with a rectangular inner hole, and the inner hole forms a receiving cavity.

[0016] A rolling body is arranged between the cavity wall of the accommodating cavity and the bottom wall of the lower supporting member, a first cushion block is arranged at the opening of the accommodating cavity, the bottom wall of the lower supporting member and the first cushion block are slidably matched, and the first cushion block and the rolling body are arranged along the extension direction of the slide rail.

[0017] The upper end of the slide rail is provided with a mounting groove, in which a second anti-slip plate is mounted, and a gap between the second anti-slip plate and the top wall of the accommodating cavity is greater than zero.

[0018] The upper support and the lower support are U-shaped, a plurality of tenons are arranged on the side of the lower support, the bottom of the upper support is matched with the corresponding tenons through the tenon holes, and the matching seams between the tenon holes and the tenons are welded.

[0019] A longitudinal rib is arranged in the groove of the lower support member, and a plurality of tenons arranged on both sides of the longitudinal rib are matched with the tenon holes on the corresponding support member, and the matching seams between the tenon holes and the tenons are welded.

[0020] The driving device comprises:

[0021] A screw rod, the screw rod is rotatably supported on a connecting seat, the connecting seat is connected to a fixed rail as a fixed end, and a first mounting cavity for accommodating the screw rod is provided on the slide rail;

[0022] A screw sleeve, which is connected to the slide rail as a movable end and is spirally matched with the screw rod;

[0023] The input end of the screw rod is transmission-connected to the output end of the rotary power device through a flexible coupling or an elastic shaft.

[0024] A track is installed in the first installation cavity, and a slider which can slide linearly along the track is slidably matched on the track, and the front end of the screw rod is rotatably connected to the slider.

[0025] A distance sensor is arranged at the far end of the slide rail, and the distance sensor is used to detect the distance between the far end of the slide rail and the working surface. The wire of the distance sensor is led out through a wire hole arranged on the slide rail.

[0026] The proximal end of the accommodating cavity is provided with an opening, and the slide rail can be installed into the accommodating cavity through the proximal opening, and the fixed end of the driving device is detachably connected to the fixed rail.

[0027] A flexible platform, comprising:

[0028] frame;

[0029] At least two of the telescopic members are arranged in parallel, and two adjacent telescopic members are arranged in parallel. The fixed rails of the telescopic members are installed on the frame, and the telescopic distance of the slide rail of each telescopic member is individually adjustable.

[0030] The frame comprises a base, a liftable lifting platform is supported on the base, and the fixed rails of the telescopic member are installed on the liftable lifting platform; the fixed rails of a plurality of telescopic members jointly support a first anti-slip plate.

[0031] The above solution has a simple and compact structure, can realize the rapid and reliable construction of the working platform, can be applied to different vehicles and equipment, can provide adaptive working surfaces according to different working surfaces, has strong versatility, can greatly save working time and cost, and can save a lot of storage space.

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the flexible platform;

[0034] Figure 2 is a three-dimensional schematic diagram of the flexible platform;

[0035] Figure 3 for Figure 1 A schematic diagram of the structure of the middle telescopic member after the second anti-slip plate is removed;

[0036] Figure 4 for Figure 1 Structural diagram of the middle slide rail;

[0037] Figure 5 for Figure 1 Schematic diagram of the rolling element arrangement structure on the middle slide rail;

[0038] Figure 6 for Figure 3 Schematic diagram of the arrangement structure of the middle and lower support members and the track;

[0039] Figure 7 for Figure 3 Schematic diagram of the arrangement structure of the middle screw rod;

[0040] Figure 8 for Figure 3 Schematic diagram of the structure of the fixed rail.

[0041] In the drawings, 110 is a fixed rail, 111 is a receiving cavity, 113 is a pad, 210 is a slide rail, 211 is a mounting groove, 2111 is a second anti-slip plate, 215 is a lower support member, 216 is an upper support member, 300 is a driving device, 310 is a fixed end, 320 is a movable end, 322 is a motor, 323 is a first mounting cavity,

[0042] 3231 is the mounting plate, 324 is the track, 327 is the longitudinal rib, 330 is the screw rod, and 331 is the slider

[0043] 500 is a frame, 510 is a base, 511 is a lifter, 520 is a lifting platform, 1111 is an opening, 1112 is a rolling body, 2511 is a tenon, 220 is a convex part, 230 is a concave part, a is a cavity, and 600 is a first anti-skid plate. DETAILED DESCRIPTION

[0044] Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0045] See also Figure 1-8 , an embodiment of a telescopic member, the telescopic member includes a fixed rail 110, a slide rail 210 and a driving device 300, the fixed rail 110 can be used to carry working tools, personnel, and connected to the corresponding frame. The fixed rail 110 can be made of materials such as steel or aluminum, which has greater strength and can carry a larger load. The fixed rail 110 is provided with a receiving chamber 111 for accommodating the slide rail 210 and constraining the movement of the slide rail 210. The receiving chamber 111 can be in a closed state or a structure with an opening set laterally. When the far end of the slide rail 210 extends outward for a long distance, when carrying a load in the vertical direction, a large bending moment is generated on the slide rail 210, and a bending moment is applied to the slide rail 210 through the receiving chamber 111 to offset the bending moment applied by the load, so as to be able to bear the load. The far end of the receiving chamber 111 has an opening 1111, and the opening 1111 is provided to facilitate the slide rail 210 to extend outward through the opening 1111 to provide an adjustable bearing surface.

[0046] The slide rail 210 is penetrated in the accommodating cavity 111, wherein the two side walls of the slide rail 210 are provided with a convex portion 220 and a concave portion 230, the convex portion 220 slides with the cavity wall of the accommodating cavity 111, and the movement of the convex portion 220 and the cavity wall of the accommodating cavity 111 is constrained by the sliding of the convex portion 220 and the cavity wall of the accommodating cavity 111 to constrain its movement in the width direction of the slide rail 210, and a cavity a is formed between the inner wall of the concave portion 230 and the cavity wall of the accommodating cavity 111. Due to the formation of the cavity a, the sliding side wall portion corresponding to the concave portion 230 does not contact the cavity wall of the accommodating cavity 111, thereby reducing the contact area. Since the telescopic member needs to have a large load in the vertical direction, it requires greater bending and torsion resistance, that is, it requires a larger thickness, which will make the two sides of the slide rail 210 have a larger contact surface. The larger contact surface has a larger sliding resistance during telescoping, and at the same time, the entire plane is required to have a larger flatness and straightness and other more stringent processing requirements, making the processing more difficult. By setting the concave portion 230 and the convex portion 220 on the side wall, the convex portion 220 cooperates with the convex portion 220, and only the convex portion 220 needs to have higher processing requirements. Even if the processing accuracy of the concave portion 230 is lower, it will not affect the sliding fit accuracy, so that it has higher economy. Of course, the cavity a can also be used for heat dissipation or the installation of components such as limit switches.

[0047] The top of the slide rail 210 is in clearance fit with the cavity wall of the accommodating cavity 111. The clearance fit includes the case where the clearance is greater than zero and the case where the clearance is equal to zero. When the clearance is equal to zero, the top of the slide rail 210 is in contact with the cavity wall of the accommodating cavity 111 and can slide relative to the cavity wall of the accommodating cavity 111. The bottom of the slide rail 210 is in sliding fit with the cavity wall of the accommodating cavity 111, and is used to support the slide rail 210 in the vertical direction. The sliding fit can be a sliding friction fit or a rolling friction fit, or a case where sliding friction fit and rolling friction coexist, that is, different friction modes act on the same part together. When there is a complex situation, when the contact surface of the sliding friction is reduced, more friction load is achieved through rolling friction, thereby reducing the overall sliding friction resistance.

[0048] The driving device 300 has a fixed end 310 connected to the fixed rail 110 and a movable end 320 with an adjustable telescopic distance. The slide rail 210 is connected to the movable end 320 and moves with the movable end 320, so that the distal part of the slide rail 210 extends outward or retracts into the opening 1111. The driving device 300 can realize the outward sliding of the slide rail, and the slide rail can be moved closer to or away from the working range through the sliding. At the same time, after the slide rail slides out, a working surface is provided, which can be used for placing tools and materials or supporting personnel.

[0049] In some embodiments, the side wall of the slide rail 210 may be provided with one or more spaced protrusions, which may be arranged along the height direction of the slide rail 210, or along the length direction of the slide rail 210, or may be arranged in an array in the width and length directions. The protrusion may be in the shape of a long strip, and preferably the extension direction of the protrusion is consistent with the extension direction of the slide rail 210, and the protrusion may pass through the entire outer wall of the slide rail 210.

[0050] In this embodiment, the slide rail 210 includes a strip-shaped lower support 215 and a strip-shaped upper support 216. The bottom of the strip-shaped lower support 215 slides with the bottom wall of the accommodating cavity 111 along the extension direction of the slide rail 210. The strip-shaped upper support 216 is installed on the upper end of the lower support 215. The extended sections on both sides of the upper support 216 form a convex portion 220. The end wall of the extended section slides with the cavity wall of the accommodating cavity 111. The side wall of the lower support 215 and the side wall of the adjacent convex portion 220 form a concave portion 230. With this structure, the structure is simple, the bottom contact area of ​​the slide rail 210 is reduced, which is conducive to sliding fit and reduces the area and difficulty of fine processing. At the same time, a through cavity a is formed on both sides of the lower support 215. The cavity a can be used to install other parts, such as a travel switch. Furthermore, a recess is provided in the lower section of the slide rail. When subjected to heavy load, the lower section of the slide rail is mainly under pressure. Even if the side wall corresponding to the recess has a slight outward deformation, it will not contact and squeeze the side wall of the accommodating cavity, thereby reducing the risk of damage to the accommodating cavity and jamming with the slide rail.

[0051] In some embodiments, the gap between the slide rail 210 and the top wall of the accommodating chamber 111 is greater than zero, and the slide rail 210 can swing around the width direction of the slide rail 210 so that the rear end of the slide rail 210 swings upward and abuts against the top wall of the accommodating chamber 111 when the slide rail 210 is tilted. With this structure, the slide rail 210 can be prevented from contacting the accommodating chamber 111, which can reduce friction and noise. When the slide rail 210 is accommodated in the accommodating chamber 111, the upper end of the slide rail does not contact the top wall of the accommodating chamber 111, which facilitates the accommodation of the slide rail 210 and the initial rapid movement of the slide rail 210 when it is extended. When the far end of the slide rail 210 extends longer or the slide rail 210 is under load, the slide rail 210 swings, and the rear end of the slide rail 210 abuts against the wall of the accommodating chamber 111, exerting downward pressure thereon to balance the bending moment on the slide rail 210. Specifically, in this embodiment, a gap greater than zero is left between the top of the upper support member 216 and the wall of the accommodating cavity 111 .

[0052] The upper end of the slide rail 210 is provided with a mounting groove 211, in which a second anti-skid plate 2111 is installed, and the gap between the second anti-skid plate and the top wall of the accommodating chamber 111 is greater than zero. Specifically in this embodiment, the mounting groove 211 is provided at the upper end of the upper support 216, and the mounting groove 211 is convenient for installing the second anti-skid plate, and the second anti-skid plate is limited at the same time. The anti-skid plate can be a plate with a large surface roughness such as an industrial wooden floor, an anti-skid aluminum plate or a patterned plate. Since the second anti-skid plate has a large surface roughness, if it contacts the wall of the accommodating chamber 111, the entire slide rail 210 has a large friction resistance when it is extended and retracted. Therefore, it is preferable that the gap between the anti-skid plate and the wall of the accommodating chamber is greater than zero, so as to avoid friction with the wall of the accommodating chamber. The higher flatness of the top of the slide rail 210 is convenient for personnel to work and store work tools. The notch plane of the mounting groove 211 is preferably flush with the second anti-skid plate, and the gaps between the second anti-skid plate, the upper support 216 and the wall of the accommodating chamber 111 are all greater than zero.

[0053] In some embodiments, the fixed rail 110 is made of a steel section or an aluminum section with a rectangular inner hole; the inner hole forms a receiving cavity 111. In this embodiment, the fixed rail 110 is a rectangular steel section, and weight-reducing holes may be provided on the side wall. In the processing of square cross-sectional steel or aluminum profiles, which are usually made of hot-rolled or cold-rolled steel strip or coil as the base material, after cold bending and then high-frequency welding, chamfers or fillets will appear at the sharp corners of the profile due to the limitations of the mold and other processes and to prevent stress concentration in the profile. When a gap greater than zero is left between the top of the slide rail and the wall of the accommodating cavity, the top of the slide rail 210 is not restricted by the sharp corners or fillets. When the side wall of the slide rail 210 is in a straight wall state, or the top of the slide rail has a maximum width, the side corresponding to the top of the slide rail is close to the side wall of the accommodating cavity 111, that is, the side wall of the slide rail 210 and the outer side wall of the profile can have a smaller thickness. When two telescopic members are arranged side by side, especially in a fitting state, there is a smaller interval between the two slide rails 210 of the adjacent telescopic members on both sides. In actual use, the risk of falling of the working tool can be reduced, and the phenomenon of unbalanced support for personnel and inconvenience in walking due to the large interval can also be prevented.

[0054] In order to reduce friction loss, a rolling body 1112 is provided in the accommodating cavity 111. The rolling body 1112 is located at the bottom of the slide rail 210 and the bottom of the accommodating cavity 111. Specifically, in this embodiment, a rolling body 1112 is provided between the cavity wall of the accommodating cavity 111 and the bottom wall of the lower support 215, which can convert the bottom friction of the slide rail 210 into rolling, so that the friction resistance is small and the wear of the contact surface can be reduced. The rolling body 1112 can be a ball or a roller. The rolling body 1112 can be constrained by a retaining frame. The retaining frame can be arranged independently of the accommodating cavity 111 and the slide rail 210, or can be fixed to the accommodating cavity 111 or the slide rail 210. In this embodiment, the rolling body 1112 is a roller, which is in line contact and has a large bearing capacity. It is fixed by a retaining frame, and the retaining frame is connected to the accommodating cavity 111 or the bottom of the slide rail. In this embodiment, it is fixed to the bottom of the slide rail. When the contact area of ​​the bottom and / or sidewall of the slide rail 210 is reduced, more friction load is achieved through rolling friction, which can reduce the overall friction resistance.

[0055] A first cushion block 113 is provided at the far end of the accommodating cavity 111, and the lower end of the slide rail 210 is slidably matched with the first cushion block 113. The cushion block 113 can increase the strength of the far end of the accommodating cavity 111. The friction between the first cushion block 113 and the slide rail 210 can prevent the accommodating cavity 111 from being worn. When the slide rail 210 bears a large bending moment, a large reaction force can be applied, and the pressure on the accommodating cavity can be dispersed. When a rolling body 1112 is provided, the first cushion block and the rolling body are arranged along the extension direction of the slide rail. The rolling body 1112 can facilitate the extension and retraction of the slide rail 210 and reduce friction loss, while the cushion block 113 can have a large load-bearing capacity and can increase a large reaction force.

[0056] In order to make the connection between the lower support 215 and the lower support 215 reliable and have a low production cost, in this embodiment, the upper support 216 and the lower support 215 are U-shaped, and the U-shaped member can be made of U-shaped steel or aluminum alloy, etc., and its two walls are straight walls, and the top of the slide rail has a maximum width. A plurality of tenons 2511 are arranged on the side of the lower support 215, and the bottom of the upper support matches the corresponding tenons 2511 through tenon holes, and the matching seams between the tenon holes and the tenons 2511 are welded. With this structure, it is convenient to weld the front assembly, and positioning can be achieved during welding, which is convenient for welding operations, and deformation caused by thermal stress can be avoided during welding. At the same time, after welding is completed, when a large bending moment is carried, it can resist the shearing of different plate layers caused by the bending moment between the upper support 216 and the lower support 215, and prevent stratification and staggering between different plate layers due to shear stress, so that the overall strength of the entire slide rail 210 is high and it is not easy to fail due to a large load.

[0057] Furthermore, a longitudinal rib 327 is provided in the groove of the lower support member 215, and a plurality of tenons 2511 arranged on both sides of the longitudinal rib 327 cooperate with the tenon holes on the corresponding support member, and the matching seams between the tenon holes and the tenons 2511 are welded. The longitudinal rib 327 can enhance the bending resistance of the slide rail 210, and at the same time, the hole between the lower support member 215 and the upper support member 216 can be divided to form a plurality of chambers, which is convenient for arranging parts separately without interfering with each other, such as spacing the distance sensor, the wire and the screw rod 330 to prevent mutual interference.

[0058] In some embodiments, the driving device 300 is used to extend or retract the distal portion of the slide rail 210. The driving device 300 may be a cylinder, a hydraulic cylinder or an electric telescopic cylinder, the extended end of the piston rod of which may be connected to the slide rail 210 as a movable end 320, and the cylinder body may be connected to the fixed rail as a fixed end; it may also be a gear rack matching mechanism, etc.

[0059] Specifically in this embodiment, the driving device 300 includes a screw rod 330 and a screw sleeve. The screw rod 330 is rotatably supported on a connecting seat, and the connecting seat is connected to the fixed rail 110 as a fixed end 310. The first installation cavity 323 for accommodating the screw rod 330 is provided on the slide rail 210. The first installation cavity 323 can share the same cavity with the wire hole, or can be arranged separately with the wire hole, and can be separated by a longitudinal rib 327. In this embodiment, the installation cavity can be surrounded by the upper support member 216 of the lower support member 215. The screw sleeve is connected to the slide rail 210 as a movable end 320 and spirally cooperates with the screw rod 330. The input end of the screw rod 330 is transmission-connected to the output end of the motor 322. The input end of the screw rod 330 can be transmission-connected to the output end of the rotary power device through a flexible coupling or an elastic shaft, so as to be used in the case where the slide rail 210 swings, and the relative offset between the input end and the output end can be compensated. The flexible coupling can be a slider coupling, a gear coupling, a universal coupling and a chain coupling, etc.; or it can be an elastic sleeve pin coupling, an elastic pin coupling, a plum blossom coupling, a tire coupling, a serpentine spring coupling and a leaf coupling, etc.

[0060] Of course, a flexible elastic shaft connection can also be provided, and its flexibility can be improved by increasing the length of the shaft or reducing the bending section coefficient of the shaft. For example, a longer overhanging section of the screw rod 330 can be connected to the motor 322. The overhanging section does not participate in the spiral transmission. The overhanging section has a certain flexibility, which can compensate for the relative displacement between the input end and the input end. Of course, the overhanging end can also be replaced by a shaft section made of elastic plastic, which can also achieve effective transmission.

[0061] The rotary power device can be a motor 322 or a hydraulic motor, a pneumatic motor, etc., or a mechanism such as a crank handle to drive the screw rod 330 to rotate. The motor 322 can be a stepper motor 322 or a servo motor 322, and the angular displacement of the rotation of the stepper motor 322 or the servo motor 322 is controlled to control the extension length of the slide rail 210. Of course, the housing of the rotary power device such as the motor can be used as a connecting seat, which is directly connected to the fixed rail as a fixed end, that is, the motor is directly connected to the fixed rail, and then directly connected to the input end of the screw rod. The connecting seat can also be set separately to connect to the fixed rail, and the rotary power device can be connected to the fixed rail or the connecting seat. The input end of the screw rod 330 can also be connected to the output end of the crank handle, and manually adjusted by hand cranking to control the extension length of the slide rail 210.

[0062] Furthermore, a track 324 is installed in the first installation cavity 323, and a slider 331 is slidably matched on the track 324 and can slide linearly along the track 324. The front end of the screw rod 330 is rotatably connected to the slider. Since the slide rail 210 extends a large distance, the screw rod 330 needs to have a large length. The front end of the screw rod 330 is overhanging for a long time, and it is easy to swing, especially during the rotation process, which destroys the stability and service life of the spiral transmission. The use of this structure can prevent its swing and prevent the screw rod 330 from failing. Specifically in this embodiment, the track 324 is tubular, and a bearing is selected as a slider. The front end of the screw rod 330 is fixed to the inner ring of the bearing, and the outer ring of the bearing is slidably matched with the inner hole of the track 324. The track 324 is connected and fixed to the longitudinal ribs or support members.

[0063] The accommodating cavity 111 is provided with an opening at the proximal end, and the slide rail 210 can be installed in the accommodating cavity through the proximal opening. The fixed end 310 of the driving device 300 is detachably connected to the fixed rail 110, and the detachable connection can be bolted, snap-fitted, etc. With this structure, modular assembly of parts such as the slide rail 210 and the driving device 300 can be achieved without removing the fixed rail 110, which is also convenient for maintenance and disassembly.

[0064] In this embodiment, a distance sensor is provided at the far end of the slide rail 210, which may be an optical distance sensor, an infrared distance sensor, an ultrasonic distance sensor, etc. The distance sensor is used to detect the distance between the far end of the slide rail 210 and the working surface. The wire of the distance sensor is led out through the wire hole provided on the slide rail 210. The wire hole may be composed of an installation cavity surrounded by a lower support 215 and an upper support 216, or may be composed of a sub-installation cavity at the partition of the installation cavity, for leading out the wire. The distance sensor may be installed on the side wall of the hole opening, or a mounting plate 3231 may be provided at the mouth of the hole, and the distance sensor may be installed on the mounting plate.

[0065] The telescopic member provided in this embodiment can be installed on a bracket alone or in parallel for use. It is used to carry personnel and tools, can be extended a large distance, has high bending resistance and large load performance, and can be easily extended and retracted.

[0066] The present invention is not limited to the above embodiment. Figure 1-8 The present invention also provides a flexible platform, including a frame 500 and at least two telescopic members in the above embodiment, wherein the fixed rails 110 of the telescopic members are installed on the frame 500, and two adjacent telescopic members are arranged side by side. When arranged side by side, a small gap can be left between the adjacent telescopic members so that people will not step on empty space and tools will not fall. Of course, it is best if the two telescopic members are closely arranged side by side without a gap. The telescopic distance of the slide rail 210 of each telescopic member can be adjusted separately.

[0067] By adopting the flexible platform, the rack 500 can be placed near the working surface of the aircraft, ship or vehicle to be operated, so that a large safety gap is left between the rack 500 and the working surface. By operating each of the telescopic parts, the telescopic distance of the slide rail 210 can be adjusted according to the actual operation requirements, so that the front end of the slide rail 210 has a smaller safety gap with the working surface or is close to the working surface. The outer section of the slide rail 210 extends outward to form an extended working table, which is convenient for operators to get close to the work and also convenient for the storage of work materials. Since the telescopic parts have greater bending resistance, they can have a smaller width, and the telescopic parts are densely arranged, which makes the overall fit to the curved surface higher. The use of this embodiment is particularly suitable for operations on curved surfaces or irregular working surfaces. Since the telescopic distance of each slide rail 210 can be adjusted individually, multiple slide rails 210 extend outward at different distances, the outer edge of the extended external work surface can be fitted with the trend of the working surface, and the overhanging external work surface can maintain a relatively uniform and smaller working gap with the working surface, or it can be directly attached to the working surface, which greatly facilitates the operation of the staff.

[0068] Furthermore, the frame 500 includes a base 510, and a liftable lifting platform 520 is supported on the base 510. The telescopic member is installed on the lift platform 520. With this structure, the lifting height of the lift platform 520 can be adjusted according to actual working height requirements, thereby facilitating operations.

[0069] Specifically in this embodiment, a plurality of rack / screw 330 lifters 511 are arranged on the base 510, and the input ends of the plurality of rack / screw 330 lifters 511 are transmission-connected to the lifting motor 322 through a transmission member, and the plurality of rack / screw 330 lifters 511 jointly support the lifting platform 520. The fixed rails 110 of the plurality of telescopic members jointly support a first anti-slip plate 600.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A telescopic member, characterized in that: include: A fixed rail (110), the fixed rail (110) having a receiving cavity (111) with an opening (1111) at a distal end; The slide rail (210) is disposed in the accommodating cavity (111). Wherein, the two side walls of the slide rail (210) are provided with a convex portion (220) and a concave portion (230), the convex portion (220) is slidably matched with the cavity wall of the accommodating cavity (111), and a cavity (a) is formed between the inner wall of the concave portion (230) and the cavity wall of the accommodating cavity (111), The top of the slide rail (210) is in clearance fit with the cavity wall of the accommodating cavity (111), and the bottom of the slide rail (210) is in sliding fit with the cavity wall of the accommodating cavity (111); A driving device (300) comprising a fixed end (310) connected to the fixed rail (110) and a movable end (320) with an adjustable telescopic distance, wherein the slide rail (210) is connected to the movable end (320) and moves with the movable end (320) so that a distal portion of the slide rail (210) extends outward or retracts into the opening (1111); The slide rail (210) comprises: A strip-shaped lower support member (215), the bottom of which is slidably engaged with the bottom wall of the accommodating cavity (111) along the extending direction of the slide rail (210); A strip-shaped upper support member (216) is mounted on the upper end of the lower support member (215), and the outwardly extending sections on both sides of the upper support member (216) form convex portions (220), and the end walls of the outwardly extending sections are slidably matched with the cavity wall of the accommodating cavity (111); Wherein, the side wall of the lower support member (215) and the side wall of the adjacent convex portion (220) form a concave portion (230); A distance sensor is arranged at the far end of the slide rail (210), and the distance sensor is used to detect the distance between the far end of the slide rail (210) and the working surface.

2. The telescopic member according to claim 1, characterized in that: The gap between the slide rail (210) and the top wall of the accommodating cavity (111) is greater than zero, and the slide rail (210) can swing around the width direction of the slide rail (210), so that when the slide rail (210) is tilted, the rear end of the slide rail (210) swings upward and abuts against the top wall of the accommodating cavity (111).

3. The telescopic member according to claim 2, characterized in that: The fixed rail (110) is made of a steel or aluminum profile with a rectangular inner hole, and the inner hole forms a receiving cavity (111).

4. The telescopic member according to claim 1 or 3, characterized in that: A rolling body (1112) is provided between the cavity wall of the accommodating cavity (111) and the bottom wall of the lower supporting member (215); a first cushion block (113) is provided at the opening (1111) of the accommodating cavity (111); the bottom wall of the lower supporting member (215) and the first cushion block (113) are slidably matched; the first cushion block and the rolling body are arranged along the extension direction of the slide rail.

5. The telescopic member according to claim 1 or 3, characterized in that: The upper end of the slide rail (210) is provided with a mounting groove (211), a second anti-slip plate is mounted in the mounting groove (211), and a gap between the second anti-slip plate and the top wall of the accommodating cavity (111) is greater than zero.

6. The telescopic member according to claim 1 or 3, characterized in that: The upper support member (216) and the lower support member (215) are U-shaped, a plurality of tenons (2511) are provided on the side of the lower support member (215), the bottom of the upper support member (216) is matched with the corresponding tenons (2511) through tenon holes, and the matching seams between the tenon holes and the tenons (2511) are welded.

7. The telescopic member according to claim 6, characterized in that: A longitudinal rib (327) is provided in the groove of the lower support member (215), a plurality of tenons (2511) provided on both sides of the longitudinal rib (327) cooperate with the tenon holes on the corresponding support member, and the matching seams between the tenon holes and the tenons (2511) are welded.

8. The telescopic member according to claim 1, characterized in that: The driving device (300) comprises: A screw rod (330) is rotatably supported on a connecting seat, the connecting seat being connected to a fixed rail (110) as a fixed end (310), and a first mounting cavity (323) for accommodating the screw rod (330) is provided on the slide rail (210); A screw sleeve, serving as a movable end (320) connected to the slide rail (210) and spirally engaged with the screw rod (330); The input end of the screw rod (330) is transmission-connected to the output end of the rotary power device via a flexible coupling or an elastic shaft.

9. The telescopic member according to claim 8, characterized in that: A track (324) is installed in the first installation cavity (323), and a slider is slidably matched on the track (324) and can slide linearly along the track (324), and the front end of the screw rod (330) is rotatably connected to the slider.

10. The telescopic member according to claim 1, characterized in that: The wire of the distance sensor is led out through a wire hole provided on the slide rail (210).

11. The telescopic member according to claim 1 or 3, characterized in that: The proximal end of the accommodating cavity (111) is provided with an opening, and the slide rail (210) can be installed in the accommodating cavity through the proximal opening, and the fixed end (310) of the driving device (300) is detachably connected to the fixed rail (110).

12. A flexible platform, characterized in that: include: Rack(500); At least two telescopic members according to any one of claims 1 to 11, two adjacent telescopic members are arranged in parallel, the fixed rails (110) of the telescopic members are installed on the frame (500), and the telescopic distance of the slide rail (210) of each telescopic member is individually adjustable.

13. The flexible platform according to claim 12, characterized in that: The frame (500) comprises a base (510), a liftable lifting platform (520) is supported on the base (510), and the fixed rail (110) of the telescopic member is installed on the liftable lifting platform (520); the fixed rails (110) of the plurality of telescopic members jointly support a first anti-slip plate (600).

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