CN114892820B - High-precision intelligent leveling supporting leg with internal limiting function - Google Patents
High-precision intelligent leveling supporting leg with internal limiting function Download PDFInfo
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- CN114892820B CN114892820B CN202210442908.2A CN202210442908A CN114892820B CN 114892820 B CN114892820 B CN 114892820B CN 202210442908 A CN202210442908 A CN 202210442908A CN 114892820 B CN114892820 B CN 114892820B
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- 230000000670 limiting effect Effects 0.000 title claims abstract description 73
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims description 82
- 238000005096 rolling process Methods 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005056 compaction Methods 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 125000003003 spiro group Chemical group 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005570 vertical transmission Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a high-precision intelligent leveling support leg with internal limiting, which comprises a gearbox shell, wherein a driving servo motor is fixed on the bottom surface of the left part of a bottom plate of the gearbox shell, the top end of a top output shaft of the driving servo motor extends out of the top surface of the bottom plate of the gearbox shell, a middle horizontal main fixing plate is fixed in the middle of the gearbox shell, a limiting mechanism assembly bottom plate is fixed in the middle of the top surface of the middle horizontal main fixing plate, and a limiting device is arranged on the limiting mechanism assembly bottom plate; its stop device is in the reducing gear box casing, and its spacing effect is good, and is difficult to damage moreover, guarantees its normal use, and it is through the bottom contact ground back of the universal ball foot bottom plate seat of lower part in addition, continues to push down for the inner tube body is retracted, makes the sensing end of main proximity switch sense the radial extension limit's of bearing frame lateral wall, just states that it is pressed in place, makes its compaction, can not produce virtual leg problem, and convenient leveling guarantees that follow-up use is stable.
Description
Technical field:
The invention relates to the technical field of supporting legs, in particular to a high-precision intelligent leveling supporting leg with internal limiting function.
The background technology is as follows:
Existing mobile shelter hospitals or some on-board mobile devices need to be automatically leveled prior to work in order to complete the work with an accurate level basis. Generally, leveling supporting legs are arranged at four corners of a trolley or a shelter hospital of the loading equipment, the four leveling supporting legs are integrally supported, and then automatic leveling is realized through an automatic control device.
The existing leveling supporting leg generally adopts an electric supporting leg, and is stable in operation and high in precision.
However, when the leveling supporting leg is adjusted, the electric leveling system generally indirectly judges the load of the supporting leg through detecting the driving current of the motor, so as to judge whether the supporting leg is grounded, namely, after the bottom of the adjusting supporting leg touches the ground, the change of the driving current fed back to the detecting motor judges whether the supporting leg is grounded, however, after the bottom of the adjusting supporting leg touches the ground in some places, the current is changed, but at the moment, the ground is probably loose, namely, the bottom of the adjusting supporting leg is not compacted at the moment, and a virtual leg is generated, at the moment, in the subsequent use process, the adjusting supporting leg which is not compacted is inclined, so that the leveling cannot be realized in a seat car or square cabin hospital of the loading device, the leveling is needed again, and the leveling is very troublesome and the effect is poor.
Meanwhile, the existing leveling support leg is generally provided with a proximity switch at the outer pipe body to detect and limit the distance of the inner pipe body extending out of the outer pipe body, and the outer size of the proximity switch is increased because the outer end of the proximity switch extends out of the outer pipe body, and meanwhile, the outer end of the proximity switch is easy to be damaged due to collision of external objects, so that the using effect is affected.
The invention comprises the following steps:
The invention aims to overcome the defects of the prior art, and provides the high-precision intelligent leveling supporting leg with the internal limit, wherein the limiting device is arranged in the reduction gearbox shell, the limiting effect is good, the limiting device is not easy to damage, the normal use of the supporting leg is ensured, the supporting leg is continuously pressed downwards after the bottom of the lower universal ball foot bottom plate seat is contacted with the ground, the inner tube body is retracted, the sensing end of the main proximity switch senses the outer side wall of the radial extension edge of the bearing seat, the supporting leg is pressed in place, the supporting leg is compacted, the problem of virtual legs is not generated, the supporting leg is convenient to level, and the subsequent use stability is ensured.
The scheme for solving the technical problems is as follows:
The utility model provides a high accuracy intelligence leveling landing leg with inside is spacing, includes the reducing gear box casing, and the left portion bottom surface of the bottom plate of reducing gear box casing is fixed with drive servo motor, the top of drive servo motor's top output shaft stretches out the bottom plate top surface of reducing gear box casing, and the middle part of reducing gear box casing is fixed with middle part level main fixed plate, and the top surface middle part of middle part level main fixed plate is fixed with stop gear assembly bottom plate, installs stop device on the stop gear assembly bottom plate, and the bottom connection spacing shaft part of stop device's input shaft stretches out the bottom surface of stop gear assembly bottom plate and inserts the cover in the main vertical through-hole of shaping on middle part level main fixed plate, and the bottom surface middle part shaping of bottom connection spacing shaft part has the vertical spacing regulation logical groove that runs through from beginning to end;
The right part of the bottom plate of the gearbox shell is provided with a transmission vertical through hole, the top end of the main trapezoidal screw rod is provided with an upward extending vertical shaft part, the top end of the vertical shaft part extends out of the top surface of the transmission vertical through hole and is fixedly provided with a main transmission gear, the middle part of the top end surface of the vertical shaft part is provided with a top guide sleeve body which extends vertically upwards, the top guide sleeve body is inserted in the main vertical connecting through hole, the bottom of the bottom connecting limiting shaft part is inserted in the top guide sleeve body, the middle part of the top guide sleeve body is fixedly provided with a front-back extending transverse guide pin, two ends of the transverse guide pin are fixed on the front wall surface and the rear wall surface of the top guide sleeve body, and the transverse guide pin is inserted in the vertical limiting adjusting through groove.
An outer pipe flange seat is fixed on the bottom surface of the right part of the bottom plate of the gearbox shell, a main step center through hole is formed in the middle of the outer pipe flange seat, a plurality of mounting vertical through holes are formed in the edge of the outer pipe flange seat, a vertical shaft part is inserted in the main step center through hole, a bearing seat is fixed on the part, extending out of the bottom surface of the outer pipe flange seat, of the lower section of the vertical shaft part, an annular mounting groove is formed in the top surface of the bearing seat, a bottom main thrust bearing is arranged in the annular mounting groove and mounted on the bearing seat, the top surface of an upper ring body of the bottom main thrust bearing extends out of the top surface of the annular mounting groove, a main buffer spring is inserted in the mounting vertical through holes, the top end of the main buffer spring is applied to the bottom surface of the bottom plate of the gearbox shell, and the bottom end of the main buffer spring is pressed against the top surface of the upper ring body of the bottom main thrust bearing;
The outer pipe flange seat is characterized in that an outer pipe body is mounted on the outer side wall of the bottom of the outer pipe flange seat, a main trapezoidal screw rod is inserted into the outer pipe body, a screw nut is screwed onto the main trapezoidal screw rod, an inner pipe body is fixed to the bottom of the screw nut, the inner pipe body is located in the outer pipe body, the main trapezoidal screw rod is inserted into the inner pipe body, and the bottom end of the inner pipe body extends out of the bottom of the outer pipe body and is provided with a lower universal ball sole seat.
The upper portion of the upper portion lubrication sleeve is sleeved with a plurality of upper portion vertical rolling needles, clamping springs are clamped in annular grooves formed in the upper portion inner side walls of the main vertical connecting through holes, the top surfaces of the upper portion vertical rolling needles are close to the bottom surfaces of the clamping springs, the bottom surfaces of the upper portion vertical rolling needles are pressed against the top surfaces of the lower portion radial extending edges, and the upper portion vertical rolling needles are located between the outer side walls of the upper portion lubrication sleeve and the inner side walls of the main vertical connecting through holes.
The lower part lateral wall of bearing frame is last to be formed with radial extension limit, is fixed with main proximity switch on the upper portion lateral wall of outer body, and main proximity switch's induction end plug bush is in the side logical groove of shaping on the upper portion lateral wall of outer body, and the terminal surface of main proximity switch's induction end corresponds with radial extension limit's lateral wall.
The inner side wall of the outer pipe body is provided with a vertical guide groove, the outer side wall of the upper part of the inner pipe body is fixedly provided with a sliding guide block, the sliding guide block is inserted into the vertical guide groove, and the sliding guide block is matched with the vertical guide groove.
The bottom circular groove is formed in the bottom surface of the bottom plate of the gearbox shell at the position below the transmission vertical through hole, the bottom circular groove is communicated with the transmission vertical through hole, an upward extending annular portion is formed in the edge of the top surface of the outer tube flange seat, the outer side wall of the annular portion is clung to the inner side wall of the bottom circular groove, the bottom circular groove is internally inserted with a horizontal elastic gasket, the top surface of the horizontal elastic gasket is pressed against the top surface of the bottom circular groove, and the top ends of all main buffer springs are forced on the bottom surface of the horizontal elastic gasket.
A plurality of rolling pins are inserted in the upper diameter hole section of the main step center through hole, and the rolling pins are inserted in the middle through hole of the horizontal elastic washer;
The upper outer side walls of all the rolling pins are clung to the inner side walls of the lower large-diameter hole sections of the vertical transmission through holes, and the lower outer side walls of all the rolling pins are clung to the inner side walls of the upper large-diameter hole sections of the central main step through holes;
the diameter of the lower section of the vertical shaft part is larger than the diameter of the middle part to the upper part of the vertical shaft part, the shaft sleeve is clamped on the outer side wall of the middle part of the vertical shaft part, the bottom surface of the shaft sleeve is pressed on the top surface of the edge part of the lower section of the vertical shaft part, the outer side walls of all the rolling needles are tightly attached to the outer side wall of the shaft sleeve, the shaft sleeve is inserted into the middle small diameter hole section and the lower large diameter hole section of the main step center through hole and the transmission vertical through hole, the upper thrust bearing is positioned in the upper large diameter hole section of the transmission vertical through hole, the upper thrust bearing is arranged on the bottom plate of the reduction gearbox shell, the top surface of the shaft sleeve is pressed on the bottom surface of the lower ring body of the bottom of the upper thrust bearing, and the top surface of the upper ring body of the top of the upper thrust bearing is pressed on the bottom surface of the main transmission gear.
The limiting device comprises a middle rotating shaft fixed in the middle of the top surface of the limiting mechanism assembly bottom plate, the upper part of the middle rotating shaft is movably connected with a worm gear through a bearing, a mounting through hole is formed in the rear part of the right part of the limiting mechanism assembly bottom plate, an input shaft is inserted into the mounting through hole and is movably connected onto the limiting mechanism assembly bottom plate through a bearing, the top end of the input shaft extends out of the top surface of the limiting mechanism assembly bottom plate and is fixedly provided with a bevel gear part, the top surface of the limiting mechanism assembly bottom plate is movably connected with a transverse transmission shaft which is transversely arranged through the bearing, the middle part of the transverse transmission shaft is a worm part which is meshed with the worm gear, the right end of the transverse transmission shaft is fixedly provided with a transmission bevel gear, and the transmission bevel gear is meshed with the bevel gear part;
An induction plate is fixed on the top surface of the worm wheel, and an extension plate part extending outwards is formed on the outer side wall of the induction plate;
The right part and the right side rear of the top surface of the limiting mechanism assembly bottom plate are respectively fixed with a first photoelectric sensor and a second photoelectric sensor, detection through grooves are formed in the middle of the first photoelectric sensor and the second photoelectric sensor, and the extension plate part corresponds to the detection through grooves.
The front top surface of the limiting mechanism assembly bottom plate is provided with two vertical connecting parts, the middle part of each vertical connecting part is provided with a central through hole, the bearing is positioned in the central through hole, the outer ring of the bearing is fixed on the inner side wall of the central through hole, and the transverse transmission shaft is fixed in the inner rings of the corresponding two bearings.
The invention has the outstanding effects that:
Its stop device is in the reducing gear box casing, and its spacing effect is good, and is difficult to damage moreover, guarantees its normal use, and it is through the bottom contact ground back of the universal ball foot bottom plate seat of lower part in addition, continues to push down for the inner tube body is retracted, makes the sensing end of main proximity switch sense the radial extension limit's of bearing frame lateral wall, just states that it is pressed in place, makes its compaction, can not produce virtual leg problem, and convenient leveling guarantees that follow-up use is stable.
Description of the drawings:
FIG. 1 is a schematic view of a partial structure of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention;
FIG. 3 is an enlarged partial view of another portion of the present invention;
FIG. 4 is a partial top view of the stop device;
FIG. 5 is a partial cross-sectional view of the stop device;
fig. 6 is a schematic view of a partial structure between the worm wheel at the stop device and the bottom plate of the stop mechanism assembly.
The specific embodiment is as follows:
1-6, a high-precision intelligent leveling supporting leg with internal limiting function comprises a gearbox housing 20, wherein a driving servo motor 60 is fixed on the bottom surface of the left part of a bottom plate of the gearbox housing 20 (an explosion-proof protection housing is arranged outside the driving servo motor 60 in the embodiment), the top end of a top output shaft of the driving servo motor 60 extends out of the top surface of the bottom plate of the gearbox housing 20, a middle horizontal main fixing plate 201 is fixed in the middle of the gearbox housing 20, a limiting mechanism assembly bottom plate 10 is fixed in the middle of the top surface of the middle horizontal main fixing plate 201, a limiting device 100 is mounted on the limiting mechanism assembly bottom plate 10, a bottom connecting limiting shaft part 142 of an input shaft 14 of the limiting device 100 extends out of the bottom surface of the limiting mechanism assembly bottom plate 10 and is inserted into a main vertical connecting through hole 202 formed in the middle horizontal main fixing plate 201, a vertical limiting adjusting through groove 143 penetrating front and back is formed in the middle of the bottom surface of the bottom connecting limiting shaft part 142, and the vertical limiting adjusting through groove 143 extends vertically upwards;
A transmission vertical through hole 21 is formed on the right part of the bottom plate of the gearbox housing 20, a vertical shaft part 221 extending upwards is formed at the top end of the main trapezoidal screw 22, the vertical shaft part 221 is inserted and sleeved in the transmission vertical through hole 21, the top end of the vertical shaft part 221 extends out of the top surface of the transmission vertical through hole 21 and is fixedly provided with a main transmission gear 23, a top guide sleeve 2910 extending upwards and vertically is formed in the middle part of the top end surface of the vertical shaft part 221, the top guide sleeve 2910 is inserted and sleeved in the main vertical connecting through hole 202, the bottom of the bottom connecting limiting shaft part 142 is inserted and sleeved in the middle hole of the top guide sleeve 2910, the outer side wall of the bottom connecting limiting shaft part 142 is clung to the inner side wall of the middle hole of the top guide sleeve 2910, the middle hole of the top guide sleeve 2910 is provided with a transverse guide pin 292 extending forwards and backwards, two ends of the transverse guide pin 292 are fixed on the front wall and the rear wall of the middle hole of the top guide sleeve 2910, the transverse guide pin 292 is inserted and sleeved in the vertical limiting and adjusting through groove 143, and the side wall of the transverse guide pin 292 is clung to the corresponding side wall of the vertical limiting and adjusting through groove 143;
A first transmission shaft 70 and a second transmission shaft 71 are arranged between the bottom plate of the gearbox housing 20 and the middle horizontal main fixing plate 201, the upper ends of the first transmission shaft 70 and the second transmission shaft 71 are movably connected to the middle horizontal main fixing plate 201 through bearings, the lower ends of the first transmission shaft 70 and the second transmission shaft 71 are movably connected to the bottom plate of the gearbox housing 20 through bearings, a driving bevel gear part is formed on the outer side wall of the top output shaft of the driving servo motor 60, a first transmission gear 72 is fixed to the lower portion of the first transmission shaft 70, the first transmission gear 72 is a bevel gear, a first transmission gear 73 is formed on the outer side wall of the upper portion of the first transmission shaft 70, a second transmission gear 74 is fixed to the upper portion of the second transmission shaft 71, a second transmission gear 75 is formed on the outer side wall of the lower portion of the second transmission shaft 71, the driving bevel gear part of the top output shaft of the driving servo motor 60 is meshed with the first transmission gear 72, the first transmission gear 73 is meshed with the second transmission gear 74, and the second transmission gear 74 is meshed with the main transmission gear 23. The driving servo motor 60 is driven to operate, and the first transmission gear 72, the first transmission gear 73, the second transmission gear 74, the second transmission gear 75 and the main transmission gear 23 drive the main trapezoidal screw 22 to rotate, so that transmission is realized.
An outer tube flange seat 24 is fixed on the bottom surface of the right part of the bottom plate of the gearbox shell 20, a main step center through hole 241 is formed in the middle of the outer tube flange seat 24, a plurality of mounting vertical through holes 242 are formed in the edge of the outer tube flange seat 24, all the mounting vertical through holes 242 are uniformly distributed on the outer tube flange seat 24 by taking the central axis of the outer tube flange seat 24 as the center, a vertical shaft part 221 is inserted into the main step center through hole 241, a bearing seat 25 is fixed on the part of the lower section of the vertical shaft part 221, which extends out of the bottom surface of the outer tube flange seat 24, an annular mounting groove is formed on the top surface of the bearing seat 25, a bottom main thrust bearing 26 is arranged in the annular mounting groove and is mounted on the bearing seat 25 (the structure that the bottom main thrust bearing 26 is mounted on the bearing seat 25 is a common structure and is not described in detail), a main buffer spring 27 is inserted into the mounting vertical through holes 242, the top end of the main buffer spring 27 is forced on the bottom surface of the bottom plate of the gearbox shell 20, and the bottom end of the main buffer spring 27 is pressed against the top surface of the upper ring body of the bottom main thrust bearing 26;
The outer pipe flange seat 24's bottom lateral wall on spiro union have outer body 30, main trapezoidal lead screw 22 plug bush is in outer body 30, the spiro union has lead screw nut 28 on the main trapezoidal lead screw 22, the spiro union has interior body 29 on the bottom lateral wall of lead screw nut 28, interior body 29 is in outer body 30, main trapezoidal lead screw 22 plug bush is in interior body 29, the bottom of interior body 29 stretches out the bottom of outer body 30 and the spiro union has bulb connecting seat 80, be fixed with bulb connecting portion 81 on the bottom plate of bulb connecting seat 80, the bottom bulb of bulb connecting portion 81 is in the bottom plate bottom surface below of bulb connecting seat 80, lower part universal ball sole seat 40 is in the bottom of bulb connecting seat 80 under, the top surface middle part shaping of lower part universal ball sole seat 40 has hemispherical shrinkage pool 41, the top surface of lower part universal ball sole seat 40 is fixed with upper cover plate 42, the middle part shaping of upper through groove, the inside wall of upper through groove is spherical wall, the top internal diameter of upper through groove is less than the bottom internal diameter of upper through groove, the bottom plug bush is in hemispherical shrinkage pool 41 and upper through groove, the bottom outside wall surface close to hemispherical shrinkage pool or on the upper side wall of the spherical shrinkage pool.
The lower radial extension edge 203 is formed on the lower inner side wall of the main vertical connection through hole 202, the outer radial extension part is formed on the lower outer side wall of the top guide sleeve 2910, the upper lubrication sleeve 1 is clamped on the outer side wall of the top guide sleeve 2910, the bottom surface of the upper lubrication sleeve 1 is pressed against the top surface of the outer radial extension part, a plurality of upper vertical rolling needles 2 are inserted into the main vertical connection through hole 202, the snap springs 3 are clamped in annular grooves formed on the upper inner side wall of the main vertical connection through hole 202, the top surface of the upper vertical rolling needles 2 is close to or clung to the bottom surface of the snap springs 3, the bottom surface of the upper vertical rolling needles 2 is pressed against the top surface of the lower radial extension edge 203, and the upper vertical rolling needles 2 are positioned between the outer side wall of the upper lubrication sleeve 1 and the inner side wall of the main vertical connection through hole 202.
Further, a radially extending edge 251 is formed on the outer side wall of the lower portion of the bearing seat 25, a main proximity switch 31 is fixed on the outer side wall of the upper portion of the outer tube 30, and the sensing end of the main proximity switch 31 is inserted into a side through groove 32 formed on the upper side wall of the outer tube 30, and the end face of the sensing end of the main proximity switch 31 corresponds to the outer side wall of the radially extending edge 251.
Further, a vertical guide groove 33 is formed on the inner side wall of the outer tube 30, a sliding guide block 291 is fixed on the outer side wall of the upper portion of the inner tube 29, the sliding guide block 291 is inserted into the vertical guide groove 33, and the sliding guide block 291 is matched with the vertical guide groove 33.
Further, a bottom circular groove 211 is formed on the bottom surface of the bottom plate of the gearbox housing 20 below the transmission vertical through hole 21, the bottom circular groove 211 is communicated with the transmission vertical through hole 21, an upward extending annular portion is formed on the top surface edge of the outer tube flange seat 24, the outer side wall of the annular portion is tightly attached to the inner side wall of the bottom circular groove 211, a horizontal elastic gasket 212 is inserted into the bottom circular groove 211, the top surface of the horizontal elastic gasket 212 is pressed against the top surface of the bottom circular groove 211, and the top ends of all the main buffer springs 27 are forced on the bottom surface of the horizontal elastic gasket 212.
Further, a plurality of rolling pins 249 are inserted in the upper diameter hole section of the main step center through hole 241, and the rolling pins 249 are inserted in the middle through hole of the horizontal elastic washer 212;
The transmission vertical through hole 21 is a multi-section through hole and comprises an upper large-diameter hole section, a middle small-diameter hole section and a lower large-diameter hole section, the middle small-diameter hole section is communicated with the upper large-diameter hole section and the lower large-diameter hole section, the upper parts of all the rolling pins 249 are inserted in the lower large-diameter hole section of the transmission vertical through hole 21, the upper outer side walls of all the rolling pins 249 are clung to the inner side wall of the lower large-diameter hole section of the transmission vertical through hole 21 or are contacted with the inner side wall of the lower large-diameter hole section of the transmission vertical through hole 21, and the lower outer side walls of all the rolling pins 249 are clung to the inner side wall of the upper diameter hole section of the main step center through hole 241 or are contacted with the inner side wall of the upper diameter hole section of the main step center through hole 241; the top surface of the needle roller 249 approaches or contacts the side top surface of the lower large diameter hole section of the transmission vertical through hole 21, and the bottom surface of the needle roller 249 contacts the side bottom surface of the upper large diameter hole section of the main step center through hole 241.
The diameter of the lower section of the vertical shaft 221 is larger than the diameter from the middle to the upper section of the vertical shaft 221, the shaft sleeve 222 is clamped on the middle outer side wall of the vertical shaft 221, the bottom surface of the shaft sleeve 222 is pressed against the top surface of the side part of the lower section of the vertical shaft 221, the outer side walls of all the needle rollers 249 are clung to the outer side wall of the shaft sleeve 222 or are contacted with the outer side wall of the shaft sleeve 222, the shaft sleeve 222 is inserted in the main step center through hole 241 and the middle small diameter hole section and the lower large diameter hole section of the transmission vertical through hole 21, the upper thrust bearing 243 is positioned in the upper large diameter hole section of the transmission vertical through hole 21, the upper thrust bearing 243 is mounted on the bottom plate of the reduction gearbox shell 20 (the mounting structure of the upper thrust bearing 243 and the bottom plate of the reduction gearbox shell 20 is a common structure, not described in detail), the top surface of the upper ring body of the top of the upper ring body of the upper thrust bearing 243 is stretched out of the top surface of the transmission vertical through hole 21 and pressed against the bottom surface of the main transmission gear 23, and the upper thrust bearing 243 is inserted in the upper large diameter hole section of the transmission vertical through hole 21.
A washer is inserted into the top end of the vertical shaft 221, a lock nut is screwed onto the outer side wall of the top end of the vertical shaft 221, and the washer is clamped between the lock nut and the middle part of the top surface of the main transmission gear 23.
Further, the bottom end of the outer tube 30 is screwed with a bottom stop collar seat 34, a plurality of sealing annular grooves are formed on the inner side wall of the middle through hole of the bottom plate of the bottom stop collar seat 34, the sealing ring 341 is nested in the corresponding sealing ring groove, the inner tube 29 is inserted into the middle through hole of the bottom plate of the bottom stop collar seat 34, and the inner side wall of the sealing ring 341 is tightly attached to the outer side wall of the inner tube 29.
Further, the bottom plate top surface of the bottom stop collar seat 34 is pressed against the stop collar 50, the outer bottom sidewall of the stop collar 50 is formed with an outer radial extension connecting edge 51, the outer radial extension connecting edge 51 is clamped between the bottom plate top surface of the bottom stop collar seat 34 and the bottom surface of the outer tube 30, the inner tube 29 is inserted into the stop collar 50, and the outer sidewall of the inner tube 29 is close to the inner sidewall of the stop collar 50.
Further, the bottom end of the main trapezoidal screw 22 is fixedly connected with a bottom limiting block 229 through a bolt, and the diameter of the bottom limiting block 229 is larger than the outer diameter of the main trapezoidal screw 22.
The limiting device 100 comprises a middle rotating shaft 11 fixed in the middle of the top surface of a limiting mechanism assembly bottom plate 10, a worm gear 12 is movably connected to the upper part of the middle rotating shaft 11 above the top surface of the limiting mechanism assembly bottom plate 10 through a bearing, a mounting through hole 13 is formed in the rear part of the right part of the limiting mechanism assembly bottom plate 10, an input shaft 14 is inserted into the mounting through hole 13, the input shaft 14 is movably connected to the limiting mechanism assembly bottom plate 10 through the bearing, the top end of the input shaft 14 extends out of the top surface of the limiting mechanism assembly bottom plate 10 and is fixedly provided with a bevel gear part 141, a transverse transmission shaft 15 which is transversely arranged is movably connected to the top surface of the limiting mechanism assembly bottom plate 10 through the bearing, a worm part 151 is arranged in the middle of the transverse transmission shaft 15, the worm part 151 is meshed with the worm gear 12, a transmission bevel gear 152 is fixed to the right end of the transverse transmission shaft 15, and the transmission bevel gear 152 is meshed with the bevel gear part 141;
a sensing plate 16 is fixed on the top surface of the worm wheel 12, and an extending plate part 161 extending outwards is formed on the outer side wall of the sensing plate 16;
The right part and the right side place ahead of the top surface of stop gear assembly bottom plate 10 are fixed with first photoelectric sensor 17 and second photoelectric sensor 18 respectively, and the middle part of first photoelectric sensor 17 and second photoelectric sensor 18 all forms and detects logical groove 19, and extension board portion 161 corresponds with detecting logical groove 19.
The induction plate 16 is a circular plate, the center axis of the induction plate 16 coincides with the center axis of the worm wheel 12, a plurality of arc through grooves 162 are formed in the edge part of the induction plate 16, all arc through grooves 162 are uniformly distributed on the induction plate 16 by taking the center axis of the worm wheel 12 as the center, screw rod parts of the fixing screws are inserted into corresponding arc through grooves 162 and are screwed into screw connection holes on the top surface of the worm wheel 12, the induction plate 16 is clamped between the head parts of the fixing screws and the top surface of the worm wheel 12, clamping and fixing are achieved, and when the induction plate is used, all the fixing screws can be unscrewed, the induction plate 16 is rotated, so that the screw rod parts of the fixing screws can move along the corresponding arc through grooves 162, the initial positions of the extension plate parts 161 are adjusted, and the detection and use requirements are met.
Further, the top surface of the rear portion of the bottom plate 10 of the limiting mechanism assembly is formed with two vertical connecting portions 110, a central through hole is formed in the middle of each vertical connecting portion 110, the bearing is located in the central through hole, the outer ring of the bearing is fixed on the inner side wall of the central through hole, and the transverse transmission shaft 15 is fixed in the inner rings of the corresponding two bearings.
Further, the bottom end of the middle rotating shaft 11 is formed with a threaded connection portion, the threaded connection portion is in a threaded connection hole formed in the middle of the top surface of the bottom plate 10 of the limiting mechanism assembly, a middle step through hole is formed in the middle of the worm wheel 12, an outer ring of a corresponding bearing is fixed on the inner side wall of a lower large-diameter hole section of the middle step through hole, an inner ring of the corresponding bearing is fixed on the upper outer side wall of the middle rotating shaft 11, the bottom surface of a top rotating portion of the middle rotating shaft 11 is pressed against the top surface of the inner ring of the corresponding bearing, the top rotating portion of the middle rotating shaft 11 is inserted into an upper small-diameter hole section of the middle step through hole, and the top surface of the outer ring of the corresponding bearing is pressed against the top surface of a lower large-diameter clamping hole section of the middle step through hole.
Further, the mounting through hole 13 is a stepped through hole, the upper hole Duan Zhijing is larger than the lower hole Duan Zhijing, the corresponding bearing is located in the upper hole section of the mounting through hole 13, the outer ring of the corresponding bearing is fixed on the inner side wall of the upper hole section of the mounting through hole 13, the bottom surface of the outer ring of the corresponding bearing is pressed against the bottom surface of the upper hole section of the mounting through hole 13, the inner ring of the corresponding bearing is fixed on the middle outer side wall of the input shaft 14, and the bottom end of the input shaft 14 extends out of the bottom surface of the mounting through hole 13.
Working principle: when the embodiment is used, the servo motor 60 is driven to operate, so that the main trapezoidal screw 22 is driven to rotate, the screw nut 28 is driven to rotate, the inner pipe 29 is driven to move downwards, the bottom surface of the lower universal ball sole seat 40 is contacted with the ground, then the operation is continued, the bottom surface of the lower universal ball sole seat 40 is completely compacted on the ground, in the compaction process, the inner pipe 29 is lifted upwards due to the reaction force of the ground, the screw nut 28 is driven to lift, the bearing seat 25 is lifted, the top surface of the upper ring body of the bottom main thrust bearing 26 is driven to compress all the main buffer springs 27, the end surface of the sensing end of the main proximity switch 31 is close to the outer side wall of the radial extension side 251, and the main proximity switch 31 senses the radial extension side 251, so that the lower universal ball sole seat 40 is compacted and pressed in place, and the leg deficiency problem cannot occur.
In the lifting process, the top guide sleeve 2910 is lifted upwards along the upper vertical needle roller 2 at the main vertical connecting through hole 202, and the transverse guide pin 292 is lifted upwards along the vertical limit adjusting through groove 143; when the lower universal ball foot bottom plate seat 40 is lifted and returned, the main trapezoidal screw rod 22 is pushed down by the elastic force of all the main buffer springs 27, so that the transverse guide pin 292 descends along the vertical limit adjusting through groove 143.
Since the proximity switch is characterized in that the sensing distance thereof varies with the change of the ambient temperature (for example, the sensing distance of some proximity switches is 0.15mm to 1.5mm, the varying distance thereof is larger), in this embodiment, the main proximity switch 31 is disposed on the side plate of the outer tube 30, the sensing end thereof is spaced from the vertical surface of the outer side wall of the side of the radially extending edge 251 adjacent to the sensing end, and the distance thereof can be adjusted to the nearest sensing distance of the sensing end of the main proximity switch 31, thereby ensuring that the radially extending edge 251 can be sensed immediately when rising to the position sensed by the sensing end of the main proximity switch 31, and greatly improving the sensing effect and the lifting adjustment precision, so that it is not substantially affected by the ambient temperature.
Meanwhile, when the main trapezoidal screw 22 of the embodiment rotates in use, the top guide sleeve 2910 at the top end of the vertical shaft 221 also rotates simultaneously, and the transverse guide pin 292 brings the bottom connection limiting shaft 142 to rotate, so that the input shaft 14 of the limiting device 100 is driven to rotate, and synchronous operation with the main trapezoidal screw 22 is realized;
In the rotation process, the bevel gear part 141 drives the transmission bevel gear 152 to rotate, so that the transverse transmission shaft 15 rotates, the worm part 151 drives the worm wheel 12 to rotate, at the beginning, the extension plate part 161 is in the detection through groove 19 of the first photoelectric sensor 17 and is sensed by the first photoelectric sensor 17, at this time, the inner pipe 29 connected at the screw nut 28 indicating the screw connection of the main trapezoidal screw 22 is in a contracted state, namely the supporting leg is not supported, and along with the operation of the driving servo motor 60, the main trapezoidal screw 22 is driven to rotate, so that the inner pipe 29 extends downwards, in the extending process, the extension plate part 161 moves from the detection through groove 19 of the first photoelectric sensor 17 to the detection through groove 19 of the second photoelectric sensor 18 and is sensed by the second photoelectric sensor 18, at this time, the bottom of the inner pipe 29 reaches the bottom, the second photoelectric sensor 18 transmits a sensing signal to the control host, the control host controls the motor to stop operation, and similarly, the extension plate part 161 moves from the detection through groove 19 of the second photoelectric sensor 18 to the detection through groove 19 of the first photoelectric sensor 17, the first photoelectric sensor 17 and the control host stops the operation.
The first photoelectric sensor 17 and the second photoelectric sensor 18 are commercially available photoelectric sensors, and the principle is that the sensing light on the top surface of the detection through groove 19 irradiates the detection sensing end on the bottom surface of the detection through groove 19, when the extension plate portion 161 moves to the detection through groove 19, the light is blocked, the detection sensing end cannot receive the sensing light, and the description moves in place, and is of a common structure and will not be described in detail. The limit device 100 realizes the highest and lowest positions of the inner pipe 29, and ensures the normal operation of the equipment.
The stop device 100 is installed in the reduction gearbox housing 20, so that the occupation of the external space is reduced, the external size of the embodiment is reduced, the first photoelectric sensor 17 and the second photoelectric sensor 18 of the stop device are both positioned in the reduction gearbox housing 20, the use stability of the stop device is guaranteed, the stop device is not easy to be broken by external objects, and the service life of the stop device is guaranteed.
Finally, the above embodiments are only for illustrating the invention, not for limiting it, and various changes and modifications can be made by one skilled in the relevant art without departing from the spirit and scope of the invention, so that all equivalent technical solutions are also within the scope of the invention, which is defined by the claims.
Claims (8)
1. The utility model provides a high accuracy intelligence leveling landing leg with inside is spacing, includes reducing gear box casing (20), and the left portion bottom surface of the bottom plate of reducing gear box casing (20) is fixed with drive servo motor (60), its characterized in that: the top end of the top output shaft of the driving servo motor (60) extends out of the top surface of the bottom plate of the gearbox shell (20), a middle horizontal main fixing plate (201) is fixed in the middle of the gearbox shell (20), a limiting mechanism assembly bottom plate (10) is fixed in the middle of the top surface of the middle horizontal main fixing plate (201), a limiting device (100) is mounted on the limiting mechanism assembly bottom plate (10), a bottom connecting limiting shaft part (142) of an input shaft (14) of the limiting device (100) extends out of the bottom surface of the limiting mechanism assembly bottom plate (10) and is inserted and sleeved in a main vertical connecting through hole (202) formed in the middle horizontal main fixing plate (201), and a vertical limiting adjusting through groove (143) penetrating front and back is formed in the middle of the bottom surface of the bottom connecting limiting shaft part (142);
A transmission vertical through hole (21) is formed in the right part of a bottom plate of the gearbox shell (20), a vertical shaft part (221) extending upwards is formed at the top end of a main trapezoidal screw rod (22), the vertical shaft part (221) is inserted and sleeved in the transmission vertical through hole (21), the top end of the vertical shaft part (221) extends out of the top surface of the transmission vertical through hole (21) and is fixedly provided with a main transmission gear (23), a top guide sleeve body (2910) extending upwards is formed in the middle part of the top surface of the vertical shaft part (221), the top guide sleeve body (2910) is inserted and sleeved in a main vertical connecting through hole (202), the bottom of a bottom connecting limiting shaft part (142) is inserted and sleeved in the top guide sleeve body (2910), a transverse guide pin (292) extending forwards and backwards is fixed at the middle part of the top guide sleeve body (2910), two ends of the transverse guide pin (292) are fixed on the front wall surface and the rear wall surface of the top guide sleeve body (2910), and the transverse guide pin (292) is inserted and sleeved in a vertical limiting and adjusting through groove (143);
The limiting device (100) comprises a middle rotating shaft (11) fixed in the middle of the top surface of a limiting mechanism assembly bottom plate (10), a worm wheel (12) is movably connected to the upper portion of the middle rotating shaft (11) through a bearing, a mounting through hole (13) is formed in the rear portion of the right portion of the limiting mechanism assembly bottom plate (10), an input shaft (14) is inserted into the mounting through hole (13), the input shaft (14) is movably connected to the limiting mechanism assembly bottom plate (10) through a bearing, the top end of the input shaft (14) extends out of the top surface of the limiting mechanism assembly bottom plate (10) and is fixedly provided with a conical gear portion (141), a transverse transmission shaft (15) is movably connected to the top surface of the limiting mechanism assembly bottom plate (10) through a bearing, the middle portion of the transverse transmission shaft (15) is a worm portion (151), the worm portion (151) is meshed with the worm wheel (12), a transmission conical gear (152) is fixed to the right end of the transverse transmission conical gear (152) and is meshed with the conical gear portion (141);
an induction plate (16) is fixed on the top surface of the worm wheel (12), and an extension plate part (161) extending outwards is formed on the outer side wall of the induction plate (16);
The right part and the right side rear part of the top surface of the limiting mechanism assembly bottom plate (10) are respectively fixed with a first photoelectric sensor (17) and a second photoelectric sensor (18), detection through grooves (19) are formed in the middle of the first photoelectric sensor (17) and the second photoelectric sensor (18), and the extension plate parts (161) correspond to the detection through grooves (19).
2. The high-precision intelligent leveling leg with internal limiting according to claim 1, wherein: an outer pipe flange seat (24) is fixed on the bottom surface of the right part of the bottom plate of the gearbox shell (20), a main step center through hole (241) is formed in the middle of the outer pipe flange seat (24), a plurality of mounting vertical through holes (242) are formed in the edge of the outer pipe flange seat (24), a vertical shaft part (221) is inserted into the main step center through hole (241), a bearing seat (25) is fixed on the part, extending out of the bottom surface of the outer pipe flange seat (24), of the lower section of the vertical shaft part (221), an annular mounting groove is formed in the top surface of the bearing seat (25), a bottom main thrust bearing (26) is arranged in the annular mounting groove and mounted on the bearing seat (25), the top surface of an upper ring body of the bottom main thrust bearing (26) extends out of the top surface of the annular mounting groove, a main buffer spring (27) is inserted into the mounting vertical through hole (242), the top end of the main buffer spring (27) is forced on the bottom surface of the bottom plate of the gearbox shell (20), and the bottom end of the main buffer spring (27) is pressed against the top surface of the upper ring body of the bottom main thrust bearing (26);
An outer pipe body (30) is mounted on the outer side wall of the bottom of the outer pipe flange seat (24), a main trapezoidal screw (22) is inserted into the outer pipe body (30), a screw nut (28) is connected to the main trapezoidal screw (22) in a threaded mode, an inner pipe body (29) is fixed to the bottom of the screw nut (28), the inner pipe body (29) is located in the outer pipe body (30), the main trapezoidal screw (22) is inserted into the inner pipe body (29), and the bottom of the outer pipe body (30) is extended from the bottom of the inner pipe body (29) and provided with a lower universal ball sole seat (40).
3. The high-precision intelligent leveling leg with internal limiting according to claim 1, wherein: the upper portion of the main vertical connecting through hole (202) is provided with a lower portion radial extending edge (203) in a forming mode, the lower portion outer side wall of the top guide sleeve body (2910) is provided with an outer radial extending portion in a forming mode, the upper portion lubricating sleeve (1) is clamped on the outer side wall of the top guide sleeve body (2910), the bottom face of the upper portion lubricating sleeve (1) is pressed on the top face of the outer radial extending portion, the main vertical connecting through hole (202) is provided with a plurality of upper portion vertical rolling needles (2) in a plugging mode, a clamp spring (3) is clamped in an annular groove formed in the upper portion inner side wall of the main vertical connecting through hole (202), the top face of the upper portion vertical rolling needles (2) is close to the bottom face of the clamp spring (3), and the bottom face of the upper portion vertical rolling needles (2) is pressed on the top face of the lower portion radial extending edge (203), and the upper portion vertical rolling needles (2) are located between the outer side wall of the upper portion lubricating sleeve (1) and the inner side wall of the main vertical connecting through hole (202).
4. The high-precision intelligent leveling leg with internal limiting according to claim 2, wherein: a radial extension edge (251) is formed on the outer side wall of the lower part of the bearing seat (25), a main proximity switch (31) is fixed on the outer side wall of the upper part of the outer pipe body (30), the induction end of the main proximity switch (31) is inserted into a side through groove (32) formed on the upper side wall of the outer pipe body (30), and the end face of the induction end of the main proximity switch (31) corresponds to the outer side wall of the radial extension edge (251).
5. The high-precision intelligent leveling leg with internal limiting according to claim 2, wherein: a vertical guide groove (33) is formed in the inner side wall of the outer pipe body (30), a sliding guide block (291) is fixed on the outer side wall of the upper portion of the inner pipe body (29), the sliding guide block (291) is inserted into the vertical guide groove (33), and the sliding guide block (291) is matched with the vertical guide groove (33).
6. The high-precision intelligent leveling leg with internal limiting according to claim 2, wherein: the bottom plate bottom surface shaping of the gearbox casing (20) of the below department of the vertical through-hole of transmission (21) has bottom circular slot (211), bottom circular slot (211) communicates with each other with the vertical through-hole of transmission (21), the top surface limit shaping of outer tube flange seat (24) has the annular portion that upwards extends, the inside wall in bottom circular slot (211) is hugged closely to the lateral wall of annular portion, the plug bush has horizontal elastic washer (212) in bottom circular slot (211), the top surface of horizontal elastic washer (212) is pressed on the top surface of bottom circular slot (211), the top of all main buffer springs (27) is forced on the bottom surface of horizontal elastic washer (212).
7. The high-precision intelligent leveling leg with internal limiting according to claim 6, wherein: a plurality of rolling pins (249) are inserted in the upper diameter hole section of the main step center through hole (241), and the rolling pins (249) are inserted in the middle through hole of the horizontal elastic washer (212);
The transmission vertical through hole (21) comprises an upper large-diameter hole section, a middle small-diameter hole section and a lower large-diameter hole section, the middle small-diameter hole section is communicated with the upper large-diameter hole section and the lower large-diameter hole section, the upper parts of all the rolling pins (249) are inserted into the lower large-diameter hole section of the transmission vertical through hole (21), the upper outer side walls of all the rolling pins (249) are clung to the inner side walls of the lower large-diameter hole section of the transmission vertical through hole (21), and the lower outer side walls of all the rolling pins (249) are clung to the inner side walls of the upper large-diameter hole section of the main step center through hole (241);
The diameter of the lower section of the vertical shaft part (221) is larger than that of the middle to upper section of the vertical shaft part (221), the shaft sleeve (222) is clamped on the outer side wall of the middle of the vertical shaft part (221), the bottom surface of the shaft sleeve (222) is pressed against the top surface of the edge of the lower section of the vertical shaft part (221), the outer side walls of all the rolling pins (249) are tightly attached to the outer side walls of the shaft sleeve (222), the shaft sleeve (222) is inserted into the middle small diameter hole section and the lower large diameter hole section of the main step center through hole (241) and the transmission vertical through hole (21), the upper thrust bearing (243) is positioned in the upper large diameter hole section of the transmission vertical through hole (21), the upper thrust bearing (243) is mounted on the bottom plate of the reduction gearbox shell (20), the top surface of the upper ring body of the top of the shaft sleeve (222) is pressed against the bottom surface of the lower ring body of the bottom of the upper thrust bearing (243), and the top surface of the upper ring body of the top of the upper thrust bearing (243) is pressed against the bottom surface of the main transmission gear (23).
8. The high-precision intelligent leveling leg with internal limiting according to claim 1, wherein: the front top surface of the limiting mechanism assembly bottom plate (10) is provided with two vertical connecting parts (110), the middle part of each vertical connecting part (110) is provided with a central through hole, the bearing is positioned in the central through hole, the outer ring of the bearing is fixed on the inner side wall of the central through hole, and the transverse transmission shaft (15) is fixed in the inner rings of the corresponding two bearings.
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| CN202210442908.2A CN114892820B (en) | 2022-04-25 | 2022-04-25 | High-precision intelligent leveling supporting leg with internal limiting function |
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| CN202210442908.2A CN114892820B (en) | 2022-04-25 | 2022-04-25 | High-precision intelligent leveling supporting leg with internal limiting function |
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| US3398967A (en) * | 1965-11-01 | 1968-08-27 | Priestman Brothers | Levelling devices |
| CN2873736Y (en) * | 2006-02-27 | 2007-02-28 | 包头北方创业专用汽车有限责任公司 | Support leg lift device |
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| CN114892820A (en) | 2022-08-12 |
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