CN108609524B

CN108609524B - Elevator for building construction

Info

Publication number: CN108609524B
Application number: CN201810871882.7A
Authority: CN
Inventors: 杨晓旭; 李朋林
Original assignee: Beijing Jiaotong University
Current assignee: Beijing Jiaotong University
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2023-07-04
Anticipated expiration: 2038-08-02
Also published as: CN108609524A

Abstract

The application discloses companion ladder for construction, including the base frame, four lifting order modules of the same structure, security device, set up four lifting order modules on the base frame, lifting order module includes the step board, screw nut, the lead screw, screw nut is closed in the lead screw soon, screw nut passes through left and right side supporting beam connection step board, be provided with the guider of step board along the upper and lower direction on the base frame, the synchronous pulley that lifting order module set up is installed on the lead screw through electromagnetic clutch device, motor reducer drive pivot rotates, the synchronous pulley that fixed in the pivot five pass through the hold-in range and the synchronous pulley that every lifting order module set up forms the belt drive, all articulate a security device between each step board of four lifting order modules of foretell, security device includes two slide bars of mutual slip, the slip position of two slide bars is adjustable and fixed, the tip of the direction that two slide bars kept away from each other is articulated with adjacent step board respectively, realize the individual regulation of step board height.

Description

Elevator for building construction

Technical Field

The invention relates to an elevator for building construction, and belongs to the field of building construction equipment.

Background

The large-scale building machine is widely used in China, along with the promotion of industrialization process, the building industry of China is also vigorous, the current large-scale building machine is rapidly developed along with the market demand, but some small-scale building equipment can not meet the demands in construction, for example, when building materials are manually transported to a high place, a wood ladder is generally adopted, the structure is simple, the safety is poor, the height is not adjustable, or when wall decoration and colored drawing are carried out, a stable height-adjustable elevator is needed, and meanwhile, the elevator can be conveniently repeated.

Four or more lifting step modules with the same structure are adopted, belt wheel rotation of all the lifting step modules is realized through a motor speed reducer and a bevel gear transmission mechanism and belt transmission, and cost is saved; each lifting step module is provided with an electromagnetic clutch device, and a control system controls a clutch of the electromagnetic clutch device to realize independent control of each lifting step module; the lifting step module adopts a nut screw mechanism, so that the self-locking performance is good, the safety is high, and meanwhile, the two sides of the lifting step module are provided with telescopic guide rails which are guided up and down, so that the stability of a lifting step on the lifting step module is ensured; two adjacent lifting steps are hinged with a security device, so that the use safety of the lifting steps is improved; the security device adopts two mutually sliding rods and a gear rack mechanism, and racks and gears can be meshed or separated to realize the adjustment or fixation of the sliding positions of the two sliding rods; the security device is used by the magnetic steel and the Hall element, so that misoperation caused by no contact with security measures is prevented, and the security device is prevented from being damaged.

Disclosure of Invention

The invention aims at: a plurality of lifting steps driven by a motor are provided, the height of each step is adjustable, and the steps are hinged with a security device for preventing the position of each step from being changed.

The purpose of the invention is realized in the following way: the lifting ladder for building construction comprises a base frame 1, a lifting step module I2, a lifting step module II 3, a lifting step module III 4, a lifting step module IV 5, a security device, a synchronous belt 9, a motor 10, a bevel gear I13, a bevel gear II 14, a synchronous pulley V15 and a control system, wherein the front side of the base frame 1 is provided with a slope surface extending forwards and downwards, a slope plate 6 is fixed on the slope surface, the four lifting step modules are sequentially arranged on the base frame 1 from back to front, and the four lifting step modules have the same structure;

the lifting step module I2 comprises a step plate I201, a synchronous pulley I204, an electromagnetic clutch I206, a screw nut I210, a screw I211 and a guiding device, wherein the screw nut I210 is screwed on the screw I211, the left side of the screw nut I210 is fixedly connected with the lower end of a left side supporting beam I202, the left side and the right side of the screw nut I210 are respectively fixedly connected with the lower ends of a left side supporting beam and a right side supporting beam, the step plate I201 is fixedly arranged at the upper ends of the left side supporting beam and the right side supporting beam, the guiding device of the step plate I201 along the up-down direction is arranged on the base frame 1, the electromagnetic clutch I206 is arranged on a cylinder shaft at the lower part of the screw I211, the electromagnetic clutch I comprises an electromagnetic clutch I2061 and a rotating disc 2062, an inner hole of the electromagnetic clutch I2061 is fixedly arranged on the screw I211, a shell of the electromagnetic clutch I2061 is fixedly connected with the rotating disc 2062, the inner hole of the rotating disc 2062 is rotationally connected with the screw I211, and the synchronous pulley I204 is fixedly arranged on the rotating disc 2062;

the output shaft of the motor 10 is fixed with an input shaft hole of the speed reducer 12, the output shaft of the speed reducer 12 is fixed with a first bevel gear 13, the motor 10 and the speed reducer 12 are fixed on the base frame 1, the first bevel gear 13 is meshed with a second bevel gear 14, the second bevel gear 14 is fixed on the upper part of the rotating shaft 18, a fifth synchronous pulley 15 is fixed on the lower part of the rotating shaft 18, the base frame 1 is provided with a rotating support of the rotating shaft 18, and the fifth synchronous pulley 15 forms belt transmission with synchronous pulleys in the four lifting step modules through the synchronous belt 9;

the security device is hinged between the step plates of the four lifting step modules and comprises two sliding rods which slide mutually, the sliding positions of the two sliding rods can be adjusted and fixed, and the end parts of the two sliding rods in the direction away from each other are hinged with the adjacent step plates respectively;

the electromagnetic clutches and the motors 10 of the four lifting order modules are connected with a control system through lines.

The security device comprises a security device I7, a security device II 72 and a security device III 71, wherein a step plate I201 of a lifting step module I2, a step plate II 301 of a lifting step module II 3, a step plate III 401 of a lifting step module III 4 and a right rear end lower surface of a step plate IV 501 of a lifting step module IV 5 are respectively fixed with a hinge seat I21, a hinge seat II 22, a hinge seat III 23 and a hinge seat IV 24, the hinge seat I21 is hinged with a rear side mounting hole I7051 of the security device I7 through a pin IV 28, the hinge seat II 22 is fixed with the middle part of a pin IV 27, the left end of the pin III 27 is rotatably connected with a front side mounting hole I7011 of the security device I7, the middle part of a pin III 27 is rotatably connected with a rear side mounting hole II of the security device II 72, the hinge seat III 23 is fixed with the right end of the pin II 26 and rotatably connected with a front side mounting hole II of the security device II 72, the left end of the pin II 26 is rotatably connected with a rear side mounting hole III of the hinge seat III 71, and the hinge seat IV 24 is rotatably connected with the front side mounting hole III 71 through the front side mounting hole III 71 of the security device III and the security device III 72.

The first security device 7 comprises a front slide bar 701, an upper rack 702, a cylindrical gear 703, an elastic stay wire 704, a rear slide bar 705, a gear rotating shaft 706, a lower rack 707, a hand axle 708, a hinge axis 709, an upper fixed axle 710 and a lower fixed axle 711, wherein the front end of the front slide bar 701 is provided with a front side mounting hole 7011, the rear side of the rear slide bar 705 is provided with a rear side mounting hole 7051, the front slide bar 701 is provided with a T-shaped groove along the front-rear direction, the rear slide bar 705 is provided with a T-shaped rod matched with the T-shaped groove, the front slide bar 701 is in sliding connection with the rear slide bar 705, the front part of the front slide bar 701 is fixedly connected with the right part of the hinge axis 709, the left part of the hinge axis 709 is in rotating connection with the front ends of the upper rack 702 and the lower rack 707, the right end of the hand axle 708 is in rotating connection with the front part of the front slide bar 707, the middle part of a first hand wheel shaft 708 is set to be cuboid, the distance from the upper surface 7081 to the lower surface of the cuboid is smaller than the distance from the front surface 7082 to the rear surface, the front end of a T-shaped rod of a first rear slide rod 705 is provided with a gear rotating shaft 706 which stretches out to the right, the right end of the gear rotating shaft 706 is rotatably provided with a cylindrical gear 703, the teeth of an upper rack 702 and a lower rack 707 face towards the cylindrical gear 703, the cuboid upper surface arranged on the first hand wheel shaft 708 is jointed with the upper jointing surface arranged at the front part of the upper rack 702, the cuboid lower surface arranged on the first hand wheel shaft 708 is jointed with the lower jointing surface arranged at the front part of the lower rack 707, the left surface of the middle part of the first hand wheel shaft 702 is fixedly provided with an upper fixing shaft 710 which stretches out to the left, the left surface of the middle part of the lower rack 707 is fixedly provided with a lower fixing shaft 711 which stretches out to the left, the upper fixing shaft 710 and the lower fixing shaft 711 are connected through an elastic stay wire 704.

A hand wheel is fixed at the left end of the first hand wheel shaft 708, when the upper surface of the cuboid arranged on the first hand wheel shaft 708 is attached to the upper attaching surface arranged at the front part of the first upper rack 702, and the lower surface of the cuboid arranged on the first hand wheel shaft 708 is attached to the lower attaching surface arranged at the front part of the first lower rack 707, the first upper rack 702 and the first lower rack 707 are meshed with the first cylindrical gear 703, and when the first hand wheel shaft 708 rotates by 90 degrees, the first upper rack 702 and the first lower rack 707 are separated from each other in the vertical direction by the cuboid on the first hand wheel shaft 708, the first elastic stay wire 704 is stretched, and the first upper rack 702 and the first lower rack 707 are not contacted with the first cylindrical gear 703.

The first security device 7 further comprises a first swing rod 712, a first magnetic steel 713, a Hall element 714 and a Hall element fixing frame 715, after the first hand wheel shaft 708 passes through the first front slide rod 701 rightward, the front end of the first swing rod 712 is fixed, the first swing rod 712 is horizontally arranged along the front and rear directions, the first magnetic steel 713 is fixed at the rear end of the first swing rod 712, the Hall element 714 is arranged at the position corresponding to the first magnetic steel 713, the Hall element fixing frame 715 is fixed on the first front slide rod 701, the Hall element 714 is fixed on the Hall element fixing frame 715, the Hall elements of the first security device 7, the second security device 72 and the third security device 71 are connected with a control system through circuits, and when the positions of the Hall element 714 and the first magnetic steel 713 correspond, the control system controls the electromagnetic clutch of the lifting step module connected with the first security device 7 to be unable to be electrified.

The five synchronous pulleys are all positioned on the inner side of the synchronous belt 9, and a tensioning device 8 is arranged between two adjacent synchronous pulleys from the first synchronous pulley 204 to the fourth synchronous pulley 504 and is used for tensioning the synchronous belt 9.

The tensioning device 8 comprises a tensioning wheel 801, a tensioning frame 802, a tensioning shaft 803 and a locking nut 804, wherein the tensioning frame 802 is fixed on the base frame 1, the tensioning frame 802 is provided with an upper through groove 8021 and a lower through groove 8021 along the left-right direction, the lower end of the tensioning shaft 803 is provided with a threaded rod, the threaded rod downwards penetrates through the through groove 8021 to rotate the locking nut 804, left-right direction position adjustment of the tensioning shaft 803 is achieved, the locking nut 804 is screwed, a shaft shoulder and a nut on the upper portion of the threaded rod are used for clamping the tensioning frame 802, the upper end of the tensioning shaft 803 is movably sleeved with the tensioning wheel 801, the tensioning wheel 801 is attached to the synchronous belt 9, and the tensioning wheel 801 is located on the outer side of the synchronous belt 9.

The screw nut one 210 is connected with the screw pair with the screw one 211 being self-locking.

The guiding device comprises a first right telescopic guide rail 208 and a first left telescopic guide rail 203, the first right telescopic guide rail 208 and the first left telescopic guide rail 203 are identical in structure, the first right telescopic guide rail 208 comprises a right lifting rod 2081 and a right fixing rod 2082, a right guide rail connecting plate 2083 is fixed at the upper end of the right lifting rod 2081, the right fixing rod 2082 is fixed on a base frame 1, the right lifting rod 2081 is in sliding connection with the right fixing rod 2082, and the right guide rail connecting plate 2083 is fixed on the lower side surface of the first step plate 201.

The structure of the rotary support provided with the rotary shaft 18 on the base frame 1 is as follows: the upper end and the lower end of the rotating shaft 18 are respectively provided with a bearing seat five 17 and a bearing seat six 19, the bearing seat five 17 is fixed on the rotating shaft upper mounting plate 16, the bearing seat six 19 is arranged on the rotating shaft lower mounting plate 20, and the rotating shaft upper mounting plate 16 and the rotating shaft lower mounting plate 20 are fixed on the base frame 1.

Compared with the prior art, the invention has the following advantages:

1. four or more lifting step modules with the same structure are adopted, belt wheel rotation of all the lifting step modules is realized through a motor speed reducer and a bevel gear transmission mechanism and belt transmission, and cost is saved;

2. each lifting step module is provided with an electromagnetic clutch device, and a control system controls a clutch of the electromagnetic clutch device to realize independent control of each lifting step module;

3. the lifting step module adopts a nut screw mechanism, so that the self-locking performance is good, the safety is high, and meanwhile, the two sides of the lifting step module are provided with telescopic guide rails which are guided up and down, so that the stability of a lifting step on the lifting step module is ensured;

4. two adjacent lifting steps are hinged with a security device, so that the use safety of the lifting steps is improved;

5. the security device adopts two mutually sliding rods and a gear rack mechanism, and racks and gears can be meshed or separated to realize the adjustment or fixation of the sliding positions of the two sliding rods;

6. the security device is used by the magnetic steel and the Hall element, so that misoperation caused by no contact with security measures is prevented, and the security device is prevented from being damaged.

Drawings

Fig. 1 is a schematic view of the overall structure of an elevator for building construction.

Fig. 2 is a schematic diagram of a lifting module structure.

FIG. 3 is a schematic diagram of a lifting module.

Fig. 4 is a schematic view of an electromagnetic clutch device and a synchronous pulley mounting structure.

Fig. 5 is a schematic view of a telescoping rail structure.

FIG. 6 is a motor reducer arrangement and four lift step module arrangements for an elevatorIs a knot of (2)Schematic diagram of structure。

Fig. 7 is a schematic diagram of a transmission connection structure of a motor reducer and a bevel gear and a belt wheel of the elevator.

Fig. 8 is a schematic diagram of a tensioner tensioning timing belt.

Fig. 9 is a schematic structural view of a security device disposed between lifting modules.

Fig. 10 is a schematic structural view of the security device.

Fig. 11 is a schematic structural diagram of a security device.

Fig. 12 is a schematic diagram of a security device.

Fig. 13 is a schematic structural view of the security device.

Fig. 14 is a schematic view of the structure of the lower rack one.

Fig. 15 is a schematic view of the structure of the upper rack one.

Detailed Description

Referring to fig. 1 to 15, the elevator for building construction of the present invention includes a base frame 1, a first lifting step module 2, a second lifting step module 3, a third lifting step module 4, a fourth lifting step module 5, a slope plate 6, a first security device 7, a second security device 72, a third security device 71, a tensioning device 8, a synchronous belt 9, a motor 10, a motor fixing plate 11, a speed reducer 12, a first bevel gear 13, a second bevel gear 14, a fifth synchronous pulley 15, an upper rotating shaft mounting plate 16, a fifth bearing housing 17, a rotating shaft 18, a sixth bearing housing 19, a lower rotating shaft mounting plate 20, a first hinge seat 21, a second hinge seat 22, a third hinge seat 23, a fourth hinge seat 24, a first pin 25, a second pin 26, a third pin 27, a fourth pin 28, and a control system, the direction of orientation ramp 6 is defined as the place ahead to the direction of orientation security device one 7 is defined as the left side, so that describe this application, the front side of base frame 1 be provided with the slope that stretches out towards place ahead, below, slope and horizontal direction contained angle be 30-45 degrees, the slope on fixed ramp 6 for conveniently adopt artifical or shallow mode to carry the elevator with building material, base frame 1 on from the back forward have set gradually four lift rank module, be lift rank module one 2, lift rank module two 3, lift rank module three 4, lift rank module four 5 respectively, the lift rank module structure of foretell is the same, base frame 1 lower extreme be provided with eight universal wheels 101 that have the brake.

The lifting step module I2 comprises a step plate I201, a left support beam I202, a left telescopic guide rail I203, a synchronous pulley I204, a bearing seat I205, an electromagnetic clutch device I206, a lower support plate I207, a right telescopic guide rail I208, a right support beam I209, a screw nut I210 and a screw I211, wherein the left telescopic guide rail I203 and the right support beam I208 have the same structure, the left support beam I202 and the right support beam 209 have axisymmetric structures relative to the screw I211, the screw I211 is screwed with the screw nut I210, the left side of the screw nut I210 is fixed at the lower end of the left support beam I202, the left support beam I202 extends from bottom to left, the upper end of the left support beam I202 is fixed at the left part of the step plate I201, the right side of the screw nut I210 is fixed at the lower end of the right support beam I209, the right support beam I209 extends from bottom to right, the upper end of the right side supporting beam I209 is fixed on the right part of the step plate I201, the step plate I201 is positioned above the screw rod I211, an electromagnetic clutch I206 is arranged on a cylinder shaft at the lower part of the screw rod I211, the electromagnetic clutch I comprises an electromagnetic clutch I2061 and a rotating disc 2062, an inner hole of the electromagnetic clutch I2061 is a fixed end, a shell of the electromagnetic clutch I2061 is a rotating end, the inner hole of the electromagnetic clutch I2061 is fixed on the screw rod I211, the shell of the electromagnetic clutch I2061 is fixedly connected with the rotating disc 2062, the inner hole of the rotating disc 2062 is rotationally connected with the screw rod I211, the rotating disc 2062 is fixedly provided with a synchronous pulley I204, the fixed end of the electromagnetic clutch I is connected with the rotating end when the electromagnetic clutch is electrified, the fixed end of the electromagnetic clutch is separated from the rotating end when the power is cut off, the screw rod I211 downwards passes through the electromagnetic clutch I206, a bearing seat I205 is arranged, the first bearing housing 205 is fixed to the first lower support plate 207, and the first lower support plate 207 is fixed to the rear lower portion of the base frame 1.

The first lead screw 211, the first right telescopic guide rail 208 and the first left telescopic guide rail 203 are arranged in parallel along the vertical mutual direction, one end of the first right telescopic guide rail 208 and one end of the first left telescopic guide rail 203 are connected with the first step plate 201 and the base frame 1, and the first right telescopic guide rail 208 and the first left telescopic guide rail 203 are guided along the up-down direction in the lifting process of the first step plate 201.

The first right telescopic rail 208 comprises a right lifting rod 2081 and a right fixing rod 2082, the upper end of the right lifting rod 2081 is fixed with a right rail connecting plate 2083, the right fixing rod 2082 is fixed on the right and rear parts of the base frame 1, the right lifting rod 2081 is slidably connected with the right fixing rod 2082, and the right rail connecting plate 2083 is fixed on the lower side surface of the first step plate 201.

The output shaft of the motor 10 is fixed with an input shaft hole of the speed reducer 12, the output shaft of the speed reducer 12 is fixed with a bevel gear I13, the motor 10 and the speed reducer 12 are fixed on a motor fixing plate 11, the motor fixing plate 11 is fixed at the left and the front of the base frame 1, the bevel gear I13 and the bevel gear II 14 are meshed, the bevel gear II 14 is fixed at the upper part of a rotating shaft 18, the lower part of the rotating shaft 18 is fixed with a synchronous pulley V15, the upper end and the lower end of the rotating shaft 18 are respectively provided with a bearing seat V17 and a bearing seat V19, the bearing seat V17 is fixed on a rotating shaft upper mounting plate 16, the bearing seat V19 is mounted on a rotating shaft lower mounting plate 20, and the rotating shaft upper mounting plate 16 and the rotating shaft lower mounting plate 20 are fixed on the base frame 1.

The synchronous belt pulley five 15 forms belt transmission with the synchronous belt pulley one 204 of the lifting step module one 2, the synchronous belt pulley two 304 of the lifting step module two 3, the synchronous belt pulley three 404 of the lifting step module three 4 and the synchronous belt pulley four 504 of the lifting step module four 5 through the synchronous belt 9, the synchronous belt pulleys are all positioned on the inner side of the synchronous belt 9, a tensioning device 8 is arranged between two adjacent belt pulleys in the synchronous belt pulley one 204 to the synchronous belt pulley four 504 and used for tensioning the synchronous belt 9, and the synchronous belt pulleys on two sides of the tensioning device are attached to the synchronous belt for reliable transmission.

The tensioning device 8 comprises a tensioning wheel 801, a tensioning frame 802, a tensioning shaft 803 and a locking nut 804, wherein the tensioning frame 802 is fixed on the right and lower portions of the base frame 1, the tensioning frame 802 is provided with an upper penetrating groove 8021 and a lower penetrating groove 8021 along the left and right directions, a threaded rod is arranged at the lower end of the tensioning shaft 803, the threaded rod downwards penetrates through the penetrating groove 8021 to rotate the locking nut 804, the threaded rod is moved along the left and right directions of the penetrating groove 8021 through unscrewing the locking nut 804, left and right direction position adjustment of the tensioning shaft 803 is achieved, the locking nut 804 is screwed, the shaft shoulder and the nut on the upper portion of the threaded rod are used for clamping the tensioning frame 802, the tensioning shaft 803 is fixed, the tensioning wheel 801 is sleeved at the upper end of the tensioning shaft 803, the tensioning wheel 801 is attached to the synchronous belt 9, and the tensioning wheel 801 is located on the outer side of the synchronous belt 9.

Step one 201 of the lifting step module one 2, step two 301 of the lifting step module two 3, step three 401 of the lifting step module three 4, right side rear end lower surfaces of step four 501 of the lifting step module four 5 are respectively fixed with hinge seat one 21, hinge seat two 22, hinge seat three 23 and hinge seat four 24, the hinge seat one 21 is hinged with rear side mounting hole one 7051 of the security device one 7 through a pin four 28, the hinge seat two 22 is fixed with the middle part of a pin three 27, the left end of the pin three 27 is rotationally connected with front side mounting hole one 7011 of the security device one 7, the right end of the pin three 27 is rotationally connected with rear side mounting hole two of the security device two 72, the hinge seat three 23 is rotationally connected with the middle part of the pin two 26, the right end of the pin two 26 is rotationally connected with the front side mounting hole two of the security device two 72, the hinge seat four 24 is hinged with the front side mounting hole three of the security device three 71 through a pin one 25, and the security device one 7, the security device two security devices 72 and the security device three 71 have the same structure.

The first security device 7 comprises a front slide bar 701, an upper rack 702, a cylindrical gear 703, an elastic stay wire 704, a rear slide bar 705, a gear rotating shaft 706, a lower rack 707, a hand wheel shaft 708, a hinge shaft 709, an upper fixed shaft 710, a lower fixed shaft 711, a swing rod 712, a magnetic steel 713, a Hall element 714 and a Hall element fixing frame 715, wherein the front end of the front slide bar 701 is provided with a front side mounting hole 7011, the rear side of the rear slide bar 705 is provided with a rear side mounting hole 7051, the front slide bar 701 is provided with a T-shaped groove along the front-rear direction, the rear slide bar 705 is provided with a T-shaped rod matched with the T-shaped groove, the front slide bar 701 is in sliding connection with the rear slide bar 705, the front part of the front slide bar 701 is fixedly provided with the right part of the hinge shaft 709, the left part of the hinge shaft 709 is in rotary connection with an upper hinge hole 7021 arranged at the front end of the upper rack 702 and a lower hinge hole 7071 arranged at the front end of the lower rack 709, the right end of the first hand wheel shaft 708 is rotationally connected with the first front sliding rod 701, the middle part of the first hand wheel shaft 708 is provided with a cuboid, the distance from the upper surface 7081 to the lower surface of the cuboid is smaller than the distance from the front surface 7082 to the rear surface, the horizontal edge of the cuboid is provided with a chamfer 7083, the chamfer angle is 10-15 degrees, the front end of the T-shaped rod of the first rear sliding rod 705 is provided with a gear rotating shaft 706 which extends right in a directional manner, the right end of the gear rotating shaft 706 is rotationally provided with a cylindrical gear 703, the teeth of the first upper rack 702 and the second rack 707 face towards the cylindrical gear 703, the upper surface of the cuboid arranged on the first hand wheel shaft 708 is jointed with an upper jointing surface 7022 arranged at the front part of the first upper rack 702, the lower surface of the cuboid arranged on the first hand wheel shaft 708 is jointed with a lower jointing surface 7072 arranged at the front part of the second rack 707, the left surface of the middle part of the upper rack I702 is fixed with an upper fixed shaft I710 which stretches leftwards, the left surface of the middle part of the lower rack I707 is fixed with a lower fixed shaft I711 which stretches leftwards, and the upper fixed shaft I710 and the lower fixed shaft I711 are connected through an elastic stay wire I704.

A hand wheel is fixed at the left end of the first hand wheel shaft 708, when the upper surface of the cuboid arranged on the first hand wheel shaft 708 is jointed with the upper jointing surface arranged at the front part of the first upper rack 702, and the lower surface of the cuboid arranged on the first hand wheel shaft 708 is jointed with the lower jointing surface arranged at the front part of the first lower rack 707, the first upper rack 702 and the first lower rack 707 are pulled close by the elastic pull wire 704, the first upper rack 702 and the first lower rack 707 are meshed with the first cylindrical gear 703, at the moment, the first front slide bar 701 and the first rear slide bar 705 cannot slide, when the first hand wheel shaft 708 rotates 90 degrees, the upper surface 7081 of the cuboid is less than the distance from the lower surface 7082 to the rear surface, the upper jointing surface arranged at the front part of the first upper rack 702 and the lower jointing surface arranged at the front part of the lower rack 707 are jointed by the upper and the lower jointing surfaces arranged at the front part of the first lower rack 707, so that the positions of the first upper rack 702 and the first lower rack 707 and the first rack 201 are stable in the lifting process, the upper rack I702 and the lower rack I707 are separated from each other in the vertical direction by a cuboid on the hand wheel axle I708, the elastic pull wire I704 is lengthened, the upper rack I702 and the lower rack I707 are not contacted with the cylindrical gear I703, at the moment, the front slide bar I701 and the rear slide bar I705 can slide, at the moment, the height of the step plate I201 of the lifting step module I2 relative to the step plate II 301 of the lifting step module II 3 can be adjusted, during the adjustment, the front slide bar I701 and the rear slide bar I705 slide mutually, after the adjustment, the hand wheel axle I708 is rotated for 90 degrees, the elastic pull wire I704 pulls the upper rack I702 and the lower rack I707, the upper rack I702 and the lower rack I707 are meshed with the cylindrical gear I703, at the moment, the front slide bar I701 and the rear slide bar I705 can not slide, at the moment, the screw rod I211 of the step plate I201 and the step plate II 301 or the screw II 211 of the lifting step module II 3 can be realized, or when the left side supporting beam 202 and the right side supporting beam 209 are broken or damaged, the first security device enables the adjacent two lifting step modules to be mutually restrained without position change so as to prevent building constructors from falling.

After the first hand wheel shaft 708 passes through the first front sliding rod 701 rightward, the front end of the first swing rod 712 is fixed, the first swing rod 712 is horizontally arranged along the front-rear direction, the rear end of the first swing rod 712 is fixed with a first magnetic steel 713, a hall element 714 is arranged at a position corresponding to the first magnetic steel 713, the hall element fixing frame 715 is fixed on the first front sliding rod 701, and the hall element 714 is fixed on the hall element fixing frame 715.

When the step plate of a certain lifting step module needs to be lifted, and the Hall element of the security device hinged by the hinging seat of the step plate does not detect magnetic steel, namely, the hand wheel shaft rotates to enable the upper rack and the lower rack of the step plate to be mutually far away, the control system can control the electromagnetic clutch device of the lifting step module to be electrified, otherwise, the security device can be damaged.

The Hall elements of the lifting order module I2, the lifting order module II 3, the lifting order module III 4, the electromagnetic clutch of the lifting order module IV 5, the motor 10, the security device I7, the security device II 72 and the security device III 71 are connected with the control system through lines.

When it is desired to transport building material to the height of the elevator, the elevator is moved to the construction site, the building material is transported to the elevator by a cart or manually, and then moved to the desired location.

When building materials are required to be carried to a certain height, the first step plate 201 of the lifting step module I2, the second step plate 301 of the lifting step module II 3, the third step plate 401 of the lifting step module III 4 and the fourth step plate 501 of the lifting step module IV 5 are required to be lifted simultaneously, the first hand wheel shaft 708 is rotated by 90 degrees, the first upper rack 702 and the first lower rack 707 are separated from each other in the vertical direction by a cuboid on the first hand wheel shaft 708, the first elastic pull wire 704 is elongated, the first upper rack 702 and the first lower rack 707 are not contacted with the first cylindrical gear 703, the first front slide rod 701 and the first rear slide rod 705 can slide, the second hand wheel shaft of the security device II 72 and the third hand wheel shaft of the security device III 71 can also rotate, the Hall elements of the three security devices are separated from the magnetic steel, the control system can control the first lifting step module II 2, the lifting step module III 4 and the electromagnetic clutch of the lifting step module IV 5 to be electrified, the control system controls the motor 10 to rotate, the bevel gear 13 to rotate, the bevel gear 14 to rotate through the speed reducer, the bevel gear 13 rotates, the bevel gear 14 rotates, the synchronous pulley five 15 rotates, the synchronous belt 9 drives the synchronous belt wheels of the lifting step modules to rotate, the control system controls the power-on time of the electromagnetic clutch of each lifting step module to enable the four lifting step plates to rise to different heights, then reversely rotating the hand wheel shafts of the security devices to ensure that the front slide bar and the rear slide bar of the security devices cannot slide, thus realizing the mutual restriction between the lifting step plates of the lifting step module and preventing the screw rod, the screw rod nut, the left side support beam, the right side support beam and the like of the lifting step module from breaking or being damaged, the security device enables the step plates of two adjacent lifting step modules to be mutually held without position change, so that building constructors are prevented from falling.

When the step plate one 201 of the lifting step module one 2, the step plate two 301 of the lifting step module two 3, the step plate three 401 of the lifting step module three 4 and the step plate four 501 of the lifting step module four 5 are required to be lowered to the initial positions, the hand wheel shafts of the security devices are rotated by 90 degrees, the upper rack one 702 and the lower rack one 707 are far away in the vertical direction, the control system controls the motor 10 to reversely rotate, meanwhile, the control system controls the electromagnetic clutch power-on time of the lifting step modules, so that the four lifting step plates are lowered to the preset height, and then the hand wheel shafts of the security devices are reversely rotated, so that the front sliding rod and the rear sliding rod of the security devices cannot slide.

When two or three step plates are required to be at the same height for building materials to be carried, the lifting heights of the two or three step plates are also controlled according to the method.

When needing to avoid the barrier or keep away from dangerous goods, use the rear end of two elevators for construction to set up in opposite directions, the rear end laminating of two elevators for construction constitutes the bridge promptly, makes the building constructor pass through.

Claims

1. The utility model provides an elevator for construction, includes base frame (1), lift rank module one (2), lift rank module two (3), lift rank module three (4), lift rank module four (5), security device, hold-in range (9), motor (10), bevel gear one (13), bevel gear two (14), synchronous pulley five (15), control system, its characterized in that: the front side of the base frame (1) is provided with a slope surface extending forwards and downwards, a slope plate (6) is fixed on the slope surface, the four lifting step modules are sequentially arranged on the base frame (1) from back to front, and the four lifting step modules have the same structure;

the lifting step module I (2) comprises a step plate I (201), a synchronous pulley I (204), an electromagnetic clutch device I (206), a screw nut I (210), a screw I (211) and a guide device, wherein the screw nut I (210) is screwed on the screw I (211), the left side of the screw nut I (210) is fixedly connected with the lower end of a left side supporting beam I (202), the left side and the right side of the screw nut I (210) are respectively fixedly connected with the lower ends of the left side supporting beam and the right side supporting beam, the step plate I (201) is fixedly arranged at the upper ends of the left side supporting beam and the right side supporting beam, the guide device of the step plate I (201) along the up-down direction is arranged on the base frame (1), the electromagnetic clutch device I (206) is arranged on a cylinder shaft at the lower part of the screw I (211), the electromagnetic clutch device I comprises an electromagnetic clutch I (2061) and a rotating disc (2062), an inner hole of the electromagnetic clutch I (2061) is fixedly connected with the rotating disc (2062), the outer shell of the electromagnetic clutch I (2061) is fixedly connected with the rotating disc (2062), and the inner hole of the rotating disc (2062) is rotationally connected with the screw pulley (211);

the output shaft of the motor (10) is fixed with an input shaft hole of the speed reducer (12), the output shaft of the speed reducer (12) is fixed with a first bevel gear (13), the motor (10) and the speed reducer (12) are fixed on the base frame (1), the first bevel gear (13) is meshed with a second bevel gear (14), the second bevel gear (14) is fixed on the upper part of the rotating shaft (18), the lower part of the rotating shaft (18) is fixed with a fifth synchronous pulley (15), the base frame (1) is provided with a rotating support of the rotating shaft (18), and the fifth synchronous pulley (15) and the synchronous pulleys in the four lifting step modules form belt transmission at the same time through the synchronous belt (9);

the electromagnetic clutches and the motors (10) of the four lifting order modules are connected with a control system through circuits;

the security device comprises a security device I (7), a security device II (72), a security device III (71), a step plate I (201) of a step-up and step-down module I (2), a step plate II (301) of a step-down module II (3), a step plate III (401) of a step-up and step-down module III (4), a step plate IV (501) of a step-down module IV (5), a hinge seat I (21), a hinge seat II (22), a hinge seat III (23) and a hinge seat IV (24) are respectively fixed on the lower surface of the right side rear end of the step plate IV (501), the hinge seat I (21) is hinged with a rear side mounting hole I (7051) of the security device I (7) through a pin IV (28), the middle part of a hinge seat II (22) is fixed on the middle part of a pin III (27), the left end of the pin III (27) is rotationally connected with a front side mounting hole I (7011) of the security device I (7), the right end of the pin III (27) is rotationally connected with a rear side mounting hole II of the security device II (72), the middle part of the hinge seat II (23) is fixed on the middle part of the pin II (26), the hinge seat II (26) is rotationally connected with the front side III (26) of the security device II (7) through the front end III (71) of the hinge seat II, the first security device (7), the second security device (72) and the third security device (71) have the same structure;

the first security device (7) comprises a front slide bar (701), an upper rack (702), a cylindrical gear (703), an elastic stay wire (704), a rear slide bar (705), a gear rotating shaft (706), a lower rack (707), a hand wheel shaft (708), a hinge shaft (709), an upper fixed shaft (710) and a lower fixed shaft (711), wherein the front end of the front slide bar (701) is provided with a front side mounting hole (7011), the rear side of the rear slide bar (705) is provided with a rear side mounting hole (7051), the front slide bar (701) is provided with a T-shaped groove along the front-rear direction, the rear slide bar I (705) is provided with a T-shaped rod which is matched with the T-shaped groove, the front slide bar I (701) is in sliding connection with the rear slide bar I (705), the front part of the front slide bar I (701) is fixedly connected with the right part of a hinge shaft I (709), the left part of the hinge shaft I (709) is rotationally connected with the front ends of an upper rack I (702) and a lower rack I (707), the right end of a hand wheel shaft I (708) is rotationally connected with the front slide bar I (701), the middle part of the hand wheel shaft I (708) is provided with a cuboid, the distance from the upper surface to the lower surface of the cuboid is smaller than the distance from the front surface (7082) to the rear surface, the horizontal edge of the cuboid is provided with a chamfer (7083), the front end of the T-shaped rod of the rear slide bar I (705) is provided with a gear rotating shaft I (706) which stretches out to the right in a directional manner, the right end of the gear rotating shaft I (706) is provided with a cylindrical gear I (703) in a rotating manner, gear teeth of an upper rack I (702) and a lower rack I (707) face towards the cylindrical gear I (703), the upper surface of a cuboid arranged on the hand wheel shaft I (708) is attached to an upper attaching surface arranged at the front part of the upper rack I (702), the lower surface of a cuboid arranged on the hand wheel shaft I (708) is attached to a lower attaching surface arranged at the front part of the lower rack I (707), the left surface of the middle part of the upper rack I (702) is fixedly provided with an upper fixed shaft I (710) which stretches out to the left, the left surface of the left middle part of the lower rack I (707) is fixedly provided with a lower fixed shaft I (711), and the upper fixed shaft I (710) is connected with the lower fixed shaft I (711) through an elastic stay wire I (704);

a hand wheel is fixed at the left end of a first hand wheel shaft (708), when the upper surface of a cuboid arranged on the first hand wheel shaft (708) is attached to an upper attaching surface arranged on the front part of an upper rack (702), and the lower surface of a cuboid arranged on the first hand wheel shaft (708) is attached to a lower attaching surface arranged on the front part of a lower rack (707), the upper rack (702) and the lower rack (707) are meshed with the first cylindrical gear (703), when the first hand wheel shaft (708) is rotated by 90 degrees, the upper rack (702) and the lower rack (707) are separated from each other by the cuboid on the first hand wheel shaft (708) in the vertical direction, and the upper rack (702) and the lower rack (707) are not contacted with the first cylindrical gear (703);

the first security device (7) further comprises a first swing rod (712), a first magnetic steel (713), a Hall element (714) and a Hall element fixing frame (715), after the first hand wheel shaft (708) passes through the first front sliding rod (701) rightward, the front end of the first swing rod (712) is fixed, the first swing rod (712) is horizontally arranged along the front-back direction, the first magnetic steel (713) is fixed at the rear end of the first swing rod (712), the Hall element (714) is arranged at the corresponding position of the first magnetic steel (713), the Hall element fixing frame (715) is fixed on the first front sliding rod (701), the Hall element (714) is fixed on the Hall element fixing frame (715), the first security device (7), the second security device (72) and the Hall element of the third security device (71) are connected with a control system through a circuit, and when the positions of the Hall element (714) and the first magnetic steel (713) are corresponding, the control system controls the electromagnetic clutch of the connected lifting step module of the first security device (7) to be unable to be electrified.

2. The elevator for building construction according to claim 1, wherein: the five synchronous pulleys are all positioned on the inner side of the synchronous belt (9), and a tensioning device (8) is arranged between two adjacent synchronous pulleys from the first synchronous pulley (204) to the fourth synchronous pulley (504) and used for tensioning the synchronous belt (9).

3. The elevator for building construction according to claim 2, wherein: the tensioning device (8) comprises a tensioning wheel (801), a tensioning frame (802), a tensioning shaft (803) and a locking nut (804), wherein the tensioning frame (802) is fixed on a base frame (1), an upper penetrating groove (8021) and a lower penetrating groove (8021) are formed in the tensioning frame (802) along the left-right direction, a threaded rod is arranged at the lower end of the tensioning shaft (803), the threaded rod downwards penetrates through the penetrating groove (8021) to rotationally close the locking nut (804), left-right direction position adjustment of the tensioning shaft (803) is achieved, the locking nut (804) is screwed, a shaft shoulder and the nut on the upper portion of the threaded rod are used for clamping the tensioning frame (802), the tensioning wheel (801) is in fit with a synchronous belt (9) in a sleeved mode, and the tensioning wheel (801) is located on the outer side of the synchronous belt (9).

4. A building construction elevator according to any one of claims 1-3, wherein: the screw nut one (210) is connected with the screw pair of which the screw one (211) is self-locking.

5. A building construction elevator according to any one of claims 1-3, wherein: the guiding device comprises a right telescopic guide rail I (208) and a left telescopic guide rail I (203), the right telescopic guide rail I (208) and the left telescopic guide rail I (203) are identical in structure, the right telescopic guide rail I (208) comprises a right lifting rod (2081) and a right fixing rod (2082), a right guide rail connecting plate (2083) is fixed at the upper end of the right lifting rod (2081), the right fixing rod (2082) is fixed on a base frame (1), the right lifting rod (2081) is in sliding connection with the right fixing rod (2082), and the right guide rail connecting plate (2083) is fixed on the lower side surface of the step plate I (201).

6. A building construction elevator according to any one of claims 1-3, wherein: the base frame (1) is provided with a rotating support structure of a rotating shaft (18) which is as follows: the upper end and the lower end of the rotating shaft (18) are respectively provided with a bearing seat five (17) and a bearing seat six (19), the bearing seat five (17) is fixed on the rotating shaft upper mounting plate (16), the bearing seat six (19) is arranged on the rotating shaft lower mounting plate (20), and the rotating shaft upper mounting plate (16) and the rotating shaft lower mounting plate (20) are fixed on the base frame (1).