CN110171761B - Lifting device with roof-impacting-preventing function and using method thereof - Google Patents
Lifting device with roof-impacting-preventing function and using method thereof Download PDFInfo
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- CN110171761B CN110171761B CN201810199655.4A CN201810199655A CN110171761B CN 110171761 B CN110171761 B CN 110171761B CN 201810199655 A CN201810199655 A CN 201810199655A CN 110171761 B CN110171761 B CN 110171761B
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- cage
- damping spring
- suspension cage
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- electromagnet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0035—Arrangement of driving gear, e.g. location or support
- B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
- B66B11/005—Arrangement of driving gear, e.g. location or support in the hoistway on the car
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0461—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with rack and pinion gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
- B66B9/022—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by rack and pinion drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Automation & Control Theory (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention belongs to the technical field of lifting equipment, and particularly relates to a lifting device with an anti-ejection function, which comprises a guide rail frame, a driving mechanism and a lifting cage, wherein the driving mechanism is arranged at the top of the lifting cage, the driving mechanism can drive the lifting cage to freely slide on the guide rail frame, and the top of the guide rail frame is connected with the anti-ejection mechanism.
Description
Technical Field
The invention belongs to the technical field of lifting equipment, and particularly relates to a lifting device with a top impact prevention function and a using method thereof.
Background
The construction elevator is also called a construction elevator for buildings, can also be an outdoor elevator and a construction site lifting cage, and comprises a lift car, a driving mechanism, a standard section, an attached wall, a chassis, a fence, an electrical system and the like. The construction elevator is mainly used in various buildings of high-rise and super-high-rise in cities, and the construction height is very difficult to finish operation by using a derrick and a portal frame. The construction elevator is a manned cargo-carrying construction machine frequently used in buildings, and is mainly used for the interior and exterior decoration of high-rise buildings, the construction of buildings such as bridges, chimneys and the like. Due to the unique box body structure, constructors can sit comfortably and safely. The construction elevator is usually matched with a tower crane to be used on a construction site. The load of a common construction elevator is 1 to 10 tons, and the running speed is 1 to 60 m/min. Construction elevators are of many kinds and are classified according to the operation mode: no counterweight and counterweight; the control modes are divided into manual control and automatic control. According to actual needs, a frequency conversion device and a PLC control module can be added, and in addition, a floor calling device and a floor leveling device can be added.
In the aspect of safety, the current construction elevator is well guaranteed, firstly, the construction elevator is electrically safe, the construction elevator is provided with travel switches such as a sliding door travel switch, a side-by-side door travel switch, a top door travel switch, an upper limit travel switch and a lower limit travel switch, and as long as any travel switch is in a protection state, the motor can be in a braking state. However, most cages in the current construction elevator are assembled on the tower frame through the guide rollers, and during operation, the cage moves up and down through the rolling of the guide rollers on the tower frame, wherein the driving force for the up-and-down movement of the cage comes from the driving device, as described above, the driving device is arranged on the cage top of the cage, generally, the driving device is provided with the gear, and the tower frame is provided with the rack corresponding to the gear, in the current construction elevator, the rack extends to the top of the tower frame from bottom to top, the mutual meshing between the gear and the rack drives the lifting of the cage, according to the relevant standards, the cage has a certain height of top impact, which is limited by the above-mentioned upper limit stroke switch, however, in the actual production process, due to the uncertainty of electrical control, such as electrical damage and other factors, the phenomenon of top impact of the cage still exists, once the situation happens, the life safety of workers is threatened directly.
Patent number is CN 201020612558.2's a construction elevator cage scour protection top-mounting, include guide rail frame, the cage of building the formation by the standard festival, the cage passes through transmission dolly and guide rail frame sliding connection, be equipped with motor, gear on the transmission dolly, be equipped with the rack on the guide rail frame, the gear with rack toothing, be equipped with scour protection top-mounting on the transmission dolly, scour protection top-mounting includes travel switch, travel switch with the motor is connected, travel switch's response shell fragment one end is equipped with touches the wheel, touch the wheel with the response shell fragment pin joint, touch the wheel with rack rolling contact, scour protection top-mounting still includes the mounting panel, the mounting panel is fixed on the transmission dolly, travel switch installs on the mounting panel, the mounting panel sets up the top at the transmission dolly. The anti-collision device in the technical scheme can prevent the construction elevator from rushing out of the floor safety height, and personal safety of the carrying personnel is guaranteed. However, when the cage exceeds the set height, the motor is stopped, and the cage can be prevented from stopping at the safe height, but sudden stopping of the motor brings uncomfortable riding feeling to the carrier and even causes injury to the carrier.
Disclosure of Invention
Based on the problems in the background art, the invention provides a lifting device with an anti-top-collision function, which can prevent a cage from rushing out of a safe height and ensure the life safety of a carrier, and has a buffering process when the cage is lifted or falls after rushing out of a set height, so that discomfort and even injury to the carrier caused by sudden speed change of the cage are prevented.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a lifting device with an anti-top-collision function comprises a guide rail frame, a driving mechanism and a suspension cage, wherein the driving mechanism is arranged at the top of the suspension cage, the driving mechanism can drive the suspension cage to freely slide on the guide rail frame, and the top of the guide rail frame is connected with an anti-top-collision mechanism; the anti-ejection mechanism comprises four upright posts, wherein a cross rod and a sliding plate are connected between the two upright posts on the front side, the sliding plate can slide on the upright posts, a spring mounting plate is connected to the lower side of the cross rod, the sliding plate is positioned below the spring mounting plate, and a small damping spring is connected between the spring mounting plate and the sliding plate; the driving mechanism comprises a back plate, a motor is mounted on the front side wall of the back plate, an output shaft of the motor is connected with a speed reducer, a gear is mounted on the rear side wall of the back plate, the gear is connected with a rack, the rack is mounted on the guide rail frame, a transverse plate is connected to the upper end of the back plate, a groove is formed in the front edge of the transverse plate, and the rack penetrates through the groove.
Further inject, the surface mounting has the electro-magnet under the slide, be provided with the switch on the stand of right front side, install friction mechanism on the backplate rear side wall, the outer wall contact of friction mechanism inner wall and the stand of right front side, install the iron plate that corresponds with the electro-magnet position on the diaphragm. Due to the structural design, after the suspension cage is flushed out of the set height, the suspension cage has a buffering process when rising or falling, and discomfort and even injury to a carrying person caused by sudden speed change of the suspension cage are prevented.
Further inject, friction mechanism includes the mounting panel, the mounting panel is installed on the backplate, both ends all are connected with the sleeve about on the mounting panel lateral wall, the sleeve in-connection has the push rod, the push rod front end is connected with the arc electro-magnet, the arc electro-magnet inside wall is close to the stand, the push rod rear end is connected with the mounting panel lateral wall through the spring
Further, the electromagnets are disc-shaped structures, and the number of the electromagnets is five. Due to the structural design, the magnetic force is large, and the buffering effect is good.
Further inject, be connected with big damping spring between spring mounting panel and the slide, big damping spring overlaps at the stand outside. Due to the structural design, resonance is effectively prevented, and the damping effect is further improved.
Further limit, the quantity of little damping spring is four, and the interval size is 160mm, the horizontal pole is the channel-section steel structure, and the model of channel-section steel is 18# b. The structural design can ensure the strength of the cross rod, reduce the weight and save materials.
Further limited, a buffer mechanism is arranged on the ground right below the suspension cage. By the structural design, when the suspension cage reaches the lowest end of the guide rail frame, the suspension cage can play a role in buffering, and the comfort and the safety of carrying personnel are improved.
Further inject, damper includes the bottom plate, the bottom plate passes through bolt and ground fixed connection, be provided with two spring mounting grooves on the bottom plate, install buffer spring in the spring mounting groove, the buffer spring upper end is connected with the backup pad.
Further limited, an emergency escape door is arranged at the top of the suspension cage, and the emergency escape door is of a rectangular structure. Due to the structural design, the carrying personnel can conveniently escape from the suspension cage under the emergency condition, and the life safety of the carrying personnel is ensured.
When the lifting cage is lifted to a set height in work, the gear is separated from the rack, the switch is shifted upwards by the arc-shaped electromagnet on the right side in the friction mechanism, the switch is turned on, the power supply of the two arc-shaped electromagnets and the electromagnet is switched on, the two arc-shaped electromagnets attract the stand column and generate friction force with the stand column, the lifting cage continues to rise, the iron block is in contact with the electromagnet and attracted by the electromagnet, the lifting cage continues to rise, and the small damping spring and the large damping spring are compressed to play a damping role on the lifting cage; when the suspension cage starts to fall after reaching the highest point, the small damping spring and the large damping spring push the suspension cage downwards to enable the suspension cage to move downwards at an accelerated speed, the two arc-shaped electromagnets and the stand column continue to slide and rub to reduce the speed of the suspension cage, after the small damping spring and the large damping spring are changed from a compression state to an extension state, the small damping spring and the large damping spring apply upward pulling force on the suspension cage to play a role in reducing speed and damping to the suspension cage, the suspension cage continues to fall, the arc-shaped electromagnets shift the switch downwards to turn off the switch, the power supplies of the arc-shaped electromagnets and the electromagnets are disconnected, the arc-shaped electromagnets are separated from the stand column under the action of the springs, the iron blocks are separated from the electromagnets, and the suspension cage continues to fall back to.
A method for preventing a lifting device from rushing to top specifically comprises the following steps:
step one, when the suspension cage is upwards flushed out of a set height, the gear is separated from the rack, the switch is upwards shifted by the arc-shaped electromagnet on the right side in the friction mechanism, the switch is turned on, the power supplies of the two arc-shaped electromagnets and the electromagnet are switched on, the two arc-shaped electromagnets attract the stand column and generate friction force with the stand column, the ascending speed of the suspension cage is reduced, the suspension cage continuously ascends, the iron block is in contact with the electromagnet and attracted by the electromagnet, the suspension cage continuously ascends, and the small damping spring and the large damping spring are compressed to play a damping role on the suspension cage;
step two, descending, when the suspension cage begins to fall after reaching the highest point, the small damping spring and the large damping spring push the suspension cage downwards to enable the suspension cage to move downwards in an accelerated manner, the two arc-shaped electromagnets and the stand column continue to slide and rub, the speed of the suspension cage is reduced, when the small damping spring and the large damping spring are changed from a compression state to an extension state, the small damping spring and the large damping spring apply upward tension to the suspension cage, the suspension cage plays roles of speed reduction and damping, the suspension cage continues to fall, the arc-shaped electromagnets shift the switch downwards, the switch is turned off, the power supplies of the arc-shaped electromagnets and the electromagnets are disconnected, the arc-shaped electromagnets are separated from the stand column under the action of the springs, the iron block is separated from the electromagnets, and the suspension cage continues to fall back to the;
and step three, buffering, wherein when the suspension cage reaches the lowest end of the guide rail frame, the buffering mechanism plays a role in buffering the suspension cage, and the comfort and the safety of the carrying personnel are improved.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
fig. 1 is a first schematic structural diagram of an embodiment of a lifting device with an anti-bumping function according to the present invention;
FIG. 2 is a schematic view of a portion A of FIG. 1;
FIG. 3 is a schematic view of a portion of the enlarged structure at B in FIG. 1;
FIG. 4 is a second schematic structural diagram of an embodiment of a lifting device with an anti-bumping function according to the present invention;
FIG. 5 is a schematic view of a portion of a driving mechanism of an embodiment of a lifting device with anti-bumping function according to the present invention;
FIG. 6 is a schematic structural diagram of a friction mechanism in an embodiment of a lifting device with an anti-bumping function according to the present invention;
FIG. 7 is a schematic structural diagram of a buffering mechanism in an embodiment of a lifting device with an anti-bumping function according to the present invention;
the main element symbols are as follows:
the device comprises a guide rail frame 1, a driving mechanism 2, a back plate 21, a gear 22, a friction mechanism 23, a mounting plate 231, a sleeve 232, a push rod 233, an arc-shaped electromagnet 234, a spring 235, a transverse plate 24, an iron block 25, a groove 26, a speed reducer 27, a motor 28, a rack 29, a suspension cage 3, an anti-collision mechanism 4, a stand column 41, a cross rod 42, a spring mounting plate 43, a small damping spring 44, a large damping spring 45, a sliding plate 46, an electromagnet 47, a switch 48, a buffer mechanism 5, a bottom plate 51, a bolt 52, a spring mounting groove 53, a buffer spring 54 and a support plate 55.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following embodiments are provided to further illustrate the present invention.
Example one
As shown in fig. 1 to 5, the lifting device with anti-collision function of the present invention comprises a guide rail frame 1, a driving mechanism 2 and a suspension cage 3, wherein the driving mechanism 2 is installed on the top of the suspension cage 3, the driving mechanism 2 is used for driving the suspension cage 3 to freely slide on the guide rail frame 1, the top of the guide rail frame 1 is connected with the anti-collision mechanism 4, the anti-collision mechanism 4 comprises four upright posts 41, a cross rod 42 and a sliding plate 46 are connected between the two upright posts 41 at the front side, the sliding plate 46 can slide on the upright posts 41, a spring mounting plate 43 is connected on the lower side of the cross rod 42, a small damping spring 44 is connected between the spring mounting plate 43 and the sliding plate 46, the driving mechanism 2 comprises a back plate 21, a motor 28 is installed on the front side wall of the back plate 21, an output shaft of the motor 28 is connected with a speed reducer 27, a gear 22, the upper end of the back plate 21 is connected with a transverse plate 24, the front edge of the transverse plate 24 is provided with a groove 26, and the rack 29 passes through the groove 26.
In the embodiment, during installation, a specified number of guide rail frames 1 are installed firstly, and then an anti-top-collision mechanism 4 is installed at the top of the topmost guide rail frame 1; in operation, the gear 22 is driven by the motor 28 to rotate on the rack 29, so as to drive the suspension cage 3 to slide on the guide rail frame 1. When the cage 3 is punched out of the set height upwards, the gear 22 is separated from the rack 29, the cage 3 continues to rise, and the small damping spring 44 is compressed to play a damping role on the cage 3; the suspension cage 3 starts to fall down after reaching the highest point and falls back to the set height.
Example two
As shown in fig. 1 to 7, the lifting device with anti-collision function of the present invention comprises a guide rail frame 1, a driving mechanism 2 and a suspension cage 3, wherein the driving mechanism 2 is installed on the top of the suspension cage 3, the driving mechanism 2 can drive the suspension cage 3 to freely slide on the guide rail frame 1, the top of the guide rail frame 1 is connected with the anti-collision mechanism 4, the anti-collision mechanism 4 comprises four upright posts 41, a cross rod 42 and a sliding plate 46 are connected between the two upright posts 41 at the front side, the sliding plate 46 can slide on the upright posts 41, a spring mounting plate 43 is connected on the lower side of the cross rod 42, the sliding plate 46 is located below the spring mounting plate 43, a small damping spring 44 is connected between the spring mounting plate 43 and the sliding plate 46, the driving mechanism 2 comprises a back plate 21, a motor 28 is installed on the front side wall of the back plate 21, an output shaft of the motor 28, rack 29 is installed on guide rail frame 1, backplate 21 upper end is connected with diaphragm 24, diaphragm 24 front edge is seted up recess 26, rack 29 passes from recess 26, surface mounting has electro-magnet 47 under the slide 46, be provided with switch 48 on the stand 41 of right front side, install friction mechanism 23 on the backplate 21 rear side wall, install the iron plate 25 that corresponds with electro-magnet 47 position on the diaphragm 24, friction mechanism 23 includes mounting panel 231, mounting panel 231 installs on backplate 21, both ends all are connected with sleeve 232 about on the mounting panel 231 lateral wall, sleeve 232 in-connection has push rod 233, push rod 233 front end is connected with arc electro-magnet 234, the inside wall of arc electro-magnet 234 is close to stand 41, the push rod 233 rear end is connected with mounting panel 231 lateral wall through spring 235.
In the above embodiment, it is preferable that the electromagnets 47 have a disk-like structure, and the number of the electromagnets 47 is five.
In the above embodiment, in order to secure the strength of the cross bar 42, it is preferable that the number of the small damper springs 44 is four and the pitch size is 160mm, and the cross bar 42 is of a channel steel structure and the type of the channel steel is 18# b. Therefore, the strength of the cross rod 42 can be ensured, the weight can be reduced, and the material can be saved.
In the above embodiment, in order to ensure the life safety of the carrying personnel, it is preferable that the top of the suspension cage 3 is provided with an emergency escape door, and the emergency escape door has a rectangular structure. This facilitates the escape of the carrier from the cage 3 in case of an emergency.
In the embodiment, during installation, a specified number of guide rail frames 1 are installed according to actual conditions, and then an anti-ejection mechanism 4 is installed at the top of the topmost guide rail frame 1; in operation, the gear 22 is driven by the motor 28 to rotate on the rack 29, so as to drive the suspension cage 3 to slide on the guide rail frame 1. When the cage 3 is punched out of a set height upwards, the gear 22 is separated from the rack 29, the arc-shaped electromagnet 234 on the right side in the friction mechanism 23 shifts the switch 48 upwards, the switch 48 is turned on (the switch 48 is similar to a household light switch, and when the upper end is pressed, the power is switched on, the lower end is bounced simultaneously, when the lower end is pressed, the power is switched off, and the upper end is bounced simultaneously), the power of the two arc-shaped electromagnets 234 and the electromagnet 47 is switched on, the two arc-shaped electromagnets 234 suck the stand column 41 and generate friction force with the stand column, so that the ascending speed of the cage 3 is reduced, the cage 3 continues to ascend, the iron block 25 is in contact with the electromagnet 47 and is sucked by the electromagnet 47, the cage 3 continues to ascend, the small damping spring 44 and the large damping spring 45 are compressed, and the; when the suspension cage 3 starts to fall after reaching the highest point, the small damping spring 44 and the large damping spring 45 push the suspension cage 3 downwards to enable the suspension cage 3 to move downwards at an accelerated speed, the two arc-shaped electromagnets 234 and the upright post 41 continue to slide and rub to reduce the speed of the suspension cage 3, when the small damping spring 44 and the large damping spring 45 are changed from a compressed state to an extended state, the small damping spring 44 and the large damping spring 45 exert an upward pulling force on the suspension cage 3 to play a role in reducing the speed and damping the suspension cage 3, the suspension cage 3 continues to fall, the arc-shaped electromagnets 234 shift the switch 48 downwards, the switch 48 is closed, the power supplies of the arc-shaped electromagnets 234 and the electromagnets 47 are disconnected, the arc-shaped electromagnets 234 are separated from the upright post 41 under the action of the springs 235, the iron blocks 25 are separated from the electromagnets 47, and the suspension cage 3 continues to fall back to the; when the suspension cage 3 reaches the lowest end of the guide rail frame 1, the suspension cage can play a role in buffering, and the comfort and the safety of the carrying personnel are improved.
A method for preventing a lifting device from rushing to top specifically comprises three steps of ascending, descending and buffering:
when the lifting cage 3 is lifted upwards and rushes out of a set height, the gear 22 is separated from the rack 29, the switch 48 is pushed upwards by the arc-shaped electromagnet 234 on the right side in the friction mechanism 23, the switch 48 is turned on, the power supply of the two arc-shaped electromagnets 234 and the electromagnet 47 is switched on, the two arc-shaped electromagnets 234 attract the stand column 41 and generate friction force with the stand column, the lifting speed of the lifting cage 3 is reduced, the lifting cage 3 continues to lift, the iron block 25 is in contact with the electromagnet 47 and attracted by the electromagnet 47, the lifting cage 3 continues to lift, and the small damping spring 44 and the large damping spring 45 are compressed to play a damping role on the lifting cage 3;
secondly, descending, when the suspension cage 3 begins to fall after reaching the highest point, the small damping spring 44 and the large damping spring 45 push the suspension cage 3 downwards to enable the suspension cage 3 to move downwards in an accelerated manner, the two arc-shaped electromagnets 234 and the upright post 41 continue to perform sliding friction, the speed of the suspension cage 3 is reduced, when the small damping spring 44 and the large damping spring 45 change from a compressed state to an extended state, the small damping spring 44 and the large damping spring 45 apply upward tension on the suspension cage 3 to perform the functions of speed reduction and damping on the suspension cage 3, the suspension cage 3 continues to fall, the arc-shaped electromagnet 234 shifts the switch 48 downwards, the switch 48 is closed, the power supplies of the arc-shaped electromagnet 234 and the electromagnet 47 are disconnected, the arc-shaped electromagnet 234 is separated from the upright post 41 under the action of the spring 235, the iron block 25 is separated from the electromagnet 47, and the suspension cage 3 continues to fall back to the set height;
buffering, when the cage 3 reaches the lowest end of the guide rail frame 1, the buffering mechanism 5 plays a role in buffering the cage 3, and comfort and safety of a carrying person are improved.
The invention has the following advantages:
1. the arrangement of the anti-collision mechanism can prevent the cage from rushing out, and ensure the life safety of the bearing personnel;
2. the damping spring is arranged, so that after the suspension cage exceeds the set height, the suspension cage can be buffered and damped, the comfort of the carrying personnel is improved, and discomfort and even injury to the carrying personnel caused by sudden change of the speed of the suspension cage are prevented;
3. the friction mechanism plays a role in reducing the speed of the suspension cage in the ascending and descending processes of the suspension cage after exceeding the set height, so that the comfort of the carrying personnel is improved;
4. the small damping spring and the large damping spring are matched for use, so that resonance can be prevented, and the buffering and damping effects of the anti-ejection mechanism are further improved;
5. the arrangement of the electromagnet can control the connection and disconnection of the driving mechanism and the anti-ejection mechanism, the electromagnet is matched with the small damping spring and the large damping spring for use, and the effect of buffering and damping is exerted on the suspension cage in the process that the suspension cage falls back to the set height, so that discomfort and even injury to a carrying person caused by sudden speed change of the suspension cage are prevented;
6. the arrangement of the buffer mechanism can play a role in buffering when the suspension cage reaches the lowest end of the guide rail frame, so that the comfort and the safety of the carrying personnel are improved;
7. the emergency escape door is convenient for a carrier to escape from the suspension cage under emergency conditions, and the life safety of the carrier is ensured.
The lifting device with the roof impact prevention function and the use method thereof provided by the invention are described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a elevating gear with scour protection top function, includes guide rail frame (1), actuating mechanism (2) and cage (3), its characterized in that: the driving mechanism (2) is arranged at the top of the suspension cage (3), the driving mechanism (2) can drive the suspension cage (3) to freely slide on the guide rail frame (1), and the top of the guide rail frame (1) is connected with an anti-ejection mechanism (4);
the anti-ejection mechanism (4) comprises four upright posts (41), wherein a cross rod (42) and a sliding plate (46) are connected between the two upright posts (41) on the front side, the sliding plate (46) can slide on the upright posts (41), a spring mounting plate (43) is connected to the lower side of the cross rod (42), the sliding plate (46) is positioned below the spring mounting plate (43), and a small damping spring (44) is connected between the spring mounting plate (43) and the sliding plate (46);
the driving mechanism (2) comprises a back plate (21), a motor (28) is installed on the front side wall of the back plate (21), a speed reducer (27) is connected onto an output shaft of the motor (28), a gear (22) is installed on the rear side wall of the back plate (21), the gear (22) is connected with a rack (29), the rack (29) is installed on the guide rail frame (1), a transverse plate (24) is connected to the upper end of the back plate (21), a groove (26) is formed in the front edge of the transverse plate (24), the rack (29) penetrates through the groove (26), an electromagnet (47) is installed on the lower surface of the sliding plate (46), a switch (48) is arranged on the upright post (41) on the right front side, a friction mechanism (23) is installed on the rear side wall of the back plate (21), and an iron block (25) corresponding to the position of the electromagnet (47) is, friction mechanism (23) are including mounting panel (231), mounting panel (231) are installed on backplate (21), both ends all are connected with sleeve (232) about on mounting panel (231) lateral wall, sleeve (232) in-connection has push rod (233), push rod (233) front end is connected with arc electro-magnet (234), arc electro-magnet (234) inside wall is close to stand (41), push rod (233) rear end passes through spring (235) and is connected with mounting panel (231) lateral wall.
2. A lifting device with roof-protecting function according to claim 1, characterized in that: the electromagnets (47) are of disc-shaped structures, and the number of the electromagnets (47) is five.
3. A lifting device with roof-protecting function according to claim 2, characterized in that: a large damping spring (45) is connected between the spring mounting plate (43) and the sliding plate (46), and the large damping spring (45) is sleeved outside the upright post (41).
4. A lifting device with roof-protecting function according to claim 3, characterized in that: the quantity of little damping spring (44) is four, and the interval size is 160mm, horizontal pole (42) are the channel-section steel structure, and the model of channel-section steel is 18# b.
5. A lifting device with an anti-roof-collision function according to claim 4, characterized in that: and a buffer mechanism (5) is arranged on the ground under the suspension cage (3).
6. A lifting device with an anti-roof-collision function according to claim 5, characterized in that: an emergency escape door is arranged at the top of the suspension cage (3) and is of a rectangular structure.
7. The use method of the lifting device with the roof impact prevention function according to claim 6 is characterized in that: the method specifically comprises the following steps of,
step one, when the cage (3) is punched out of a set height upwards, the gear (22) is separated from the rack (29), the switch (48) is shifted upwards by the arc-shaped electromagnet (234) on the right side in the friction mechanism (23), the switch (48) is turned on, the two arc-shaped electromagnets (234) suck the upright post (41) and generate friction force with the upright post, the ascending speed of the cage (3) is reduced, the cage (3) continues to ascend, the iron block (25) is in contact with the electromagnet (47) and is sucked by the electromagnet (47), the cage (3) continues to ascend, the small damping spring (44) and the large damping spring (45) are compressed, and the damping effect on the cage (3) is achieved;
step two, the cage (3) is pushed downwards by the small damping spring (44) and the large damping spring (45) to ensure that the cage (3) moves downwards at an accelerated speed, the two arc-shaped electromagnets (234) continue to slide and rub with the upright post (41) to reduce the speed of the cage (3), when the small damping spring (44) and the large damping spring (45) are changed from the compression state to the extension state, the small damping spring (44) and the large damping spring (45) apply upward tension to the suspension cage (3), the speed reduction and shock absorption effects are achieved on the suspension cage (3), the suspension cage (3) continuously falls, the switch (48) is shifted downwards by the arc-shaped electromagnet (234), the switch (48) is closed, the arc-shaped electromagnet (234) is separated from the upright post (41) under the action of the spring (235), the iron block (25) is separated from the electromagnet (47), and the suspension cage (3) continuously falls back to the set height;
and step three, buffering, wherein when the suspension cage (3) reaches the lowest end of the guide rail frame (1), the buffering mechanism (5) plays a role in buffering the suspension cage (3), and the comfort and the safety of the carrying personnel are improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810199655.4A CN110171761B (en) | 2018-03-12 | 2018-03-12 | Lifting device with roof-impacting-preventing function and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810199655.4A CN110171761B (en) | 2018-03-12 | 2018-03-12 | Lifting device with roof-impacting-preventing function and using method thereof |
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| Publication Number | Publication Date |
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| CN110171761A CN110171761A (en) | 2019-08-27 |
| CN110171761B true CN110171761B (en) | 2020-09-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110862000A (en) * | 2019-11-26 | 2020-03-06 | 天津京龙工程机械有限公司 | Thing networking remote monitoring construction elevator |
| CN110921461B (en) * | 2019-12-02 | 2023-10-27 | 厦门康柏机械集团有限公司 | Small-size cage of safe steady type |
| CN111498744B (en) * | 2020-04-20 | 2021-06-15 | 张婷婷 | Lift convenient to transport bridge construction material |
| CN112027860A (en) * | 2020-08-24 | 2020-12-04 | 南京涵铭置智能科技有限公司 | Vertical lifting device for high-altitude operation and operation method thereof |
| CN112695994A (en) * | 2020-12-22 | 2021-04-23 | 温州顺启建筑有限公司 | Construction equipment for prefabricated building |
| CN114212647A (en) * | 2021-11-16 | 2022-03-22 | 中国建筑第八工程局有限公司 | Construction elevator |
| CN114701936A (en) * | 2022-04-15 | 2022-07-05 | 国家电网有限公司特高压建设分公司 | Top-collision-prevention safety control system of construction elevator and control method thereof |
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| GB912746A (en) * | 1960-04-12 | 1962-12-12 | Carves Simon Ltd | Improvements in and relating to drop-back catch assemblies for vertical conveyors |
| JP3635602B2 (en) * | 1996-11-29 | 2005-04-06 | 三和テッキ株式会社 | Elevator fall prevention device |
| CN202953647U (en) * | 2012-11-29 | 2013-05-29 | 广州市京龙工程机械有限公司 | Device for preventing construction elevator machinery from rushing or being pushed out |
| CN105731208B (en) * | 2014-12-09 | 2019-04-09 | 三一汽车起重机械有限公司 | Building hoist and its Anti-over-hoisting device |
| CN105173964B (en) * | 2015-01-15 | 2017-05-31 | 杨伦 | Elevator rush to summit and crouching bottom accident buffer unit |
| CN106966252B (en) * | 2017-03-13 | 2019-03-12 | 唐山市赛娜机电设备有限责任公司 | Mine vertical shaft lifting system pulleying buffer and supporting cage device and hydraulic system |
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