CN110745674A - Shallow pit elevator pit overhauls uses safety arrangement - Google Patents
Shallow pit elevator pit overhauls uses safety arrangement Download PDFInfo
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- CN110745674A CN110745674A CN201911168019.6A CN201911168019A CN110745674A CN 110745674 A CN110745674 A CN 110745674A CN 201911168019 A CN201911168019 A CN 201911168019A CN 110745674 A CN110745674 A CN 110745674A
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- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 65
- 238000012423 maintenance Methods 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 230000009194 climbing Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
- B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors
- B66B13/185—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors electrical
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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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a safety protection device for shallow pit elevator pit maintenance, which comprises an elevator well and a car system, wherein a layer of door position detection device is arranged on one side of a bottom elevator door opening, and a layer door collision block and a car door collision block are respectively arranged on one adjacent side of an elevator layer door and a car door; the door position detection device comprises a fixed frame, a detection switch, a switch installation block, a return spring, a rotating frame, a first rotating rod and a second rotating rod; a car blocking device is further arranged above the bottom elevator door opening and comprises a first rotating arm, a second rotating arm, a first jacking mechanism, a second jacking mechanism and a stopper; the detection switch, the first jacking mechanism and the second jacking mechanism are all connected with the control device; a car collision block is arranged at the lower side of the car. The invention can ensure the safety of the maintenance of the elevator pit and is convenient for people to go out.
Description
Technical Field
The invention relates to the technical field of elevator maintenance, in particular to a safety protection device for shallow pit elevator pit maintenance.
Background
With the more and more extensive application of elevators, the more and more extensive use of elevators is. For some old buildings, elevators are also increasingly installed; however, the old community environment is special, and particularly, circuits, gas, water supply and drainage pipe networks and the like below the old building are complicated, so that the pit for additionally installing the elevator can only be made into a shallow pit for the reasons of fire fighting, light removal, structural safety and the like.
The elevator needs regular routine maintenance during operation. During maintenance, elevator maintenance personnel inevitably need to enter the elevator pit for operation. For shallow pit elevators, the overhaul height space of the elevator pit cannot meet the safety overhaul requirement, so that great potential safety hazards exist for overhaul of the elevator. Therefore, before the maintenance personnel enter the pit, the elevator must be switched to a maintenance state, and a certain protection measure must be set at a certain height from the maintenance personnel to ensure the life safety of the maintenance personnel through the protection device. However, in the process of maintenance of the existing elevator, the elevator is usually in a state of stopping running, and only one elevator is usually added in an old cell, which brings great inconvenience to people going out.
Therefore, the elevator pit overhauling safety protection device which does not affect the operation of the elevator and can ensure the safety of the maintenance personnel entering the elevator pit has important significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a safety protection device for shallow pit elevator pit maintenance, which can effectively solve the problem of potential safety hazard caused by insufficient maintenance height space of a shallow pit elevator pit and does not influence the operation of an elevator, thereby ensuring the safety of elevator pit maintenance and facilitating the trip of people.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows: a safety protection device for pit maintenance of a shallow pit elevator comprises an elevator shaft and a car system, wherein the car system comprises a car and car doors, the elevator shaft is provided with elevator door openings corresponding to floors, and elevator landing doors are arranged in the elevator door openings; the method is characterized in that: a landing door position detection device is arranged on one side of the bottom elevator door opening and is close to the upper edge or the lower edge of the elevator landing door; a landing door collision block and a car door collision block are respectively arranged at the adjacent side of the elevator landing door and the car door and correspond to the position of the landing door position detection device, and the length direction of the landing door collision block and the car door collision block is consistent with the opening and closing direction of the elevator landing door and the car door and is correspondingly and fixedly connected with the elevator landing door and the car door;
the door position detection device comprises a fixed frame, a detection switch, a switch installation block, a return spring, a rotating frame, a first rotating rod and a second rotating rod; the fixing frame is fixedly connected with the elevator shaft and is provided with a vertically arranged mounting plate, and the mounting plate is opposite to the gap between the elevator landing door and the car door, is parallel to the elevator landing door and the car door, and extends to the upper edge of the elevator landing door and the upper edge of the car door or the lower edge of the car door; the switch mounting block is connected with the mounting plate through a return spring, wherein the return spring is horizontally arranged, and the length direction of the return spring is vertical to the mounting plate; the detection switch is fixedly connected with the switch mounting block and is positioned on one side, close to the elevator door opening, of the spring, the detection switch is provided with a rotating arm, the rotating arm can trigger the detection switch when rotating, the free end of the transmission arm extends towards the elevator door opening direction and is connected with a first collision wheel after being bent towards the landing door direction, and a gap is formed between the first collision wheel and the landing door collision block; the rotating frame is V-shaped and horizontally arranged on one side of the return spring, which is far away from the elevator door opening, and one end of the rotating frame, which is connected with the two support arms, is fixedly connected with the switch mounting block; the first rotating rod and the second rotating rod are respectively connected with the other ends of the two arms of the rotating frame in a rotating mode through a connecting shaft, a torsion spring is further sleeved on the connecting shaft, one torsion arm of the torsion spring is fixedly connected with the supporting arm of the rotating frame, the other torsion arm is correspondingly and fixedly connected with the first rotating rod and the second rotating rod, and the first rotating rod and the second rotating rod are respectively positioned on the same straight line with the two arms of the rotating frame under the action of the torsion spring; one end of the first rotating rod and one end of the second rotating rod, which are far away from the support arm, are respectively provided with a second collision wheel, wherein one sides of the two second collision wheels, which are far away from each other, respectively protrude out of extension lines of the landing door collision block and the car door collision block; one end of the rotating frame, which is connected with the two support arms, is also rotatably connected with a vertically arranged rotating shaft, and the rotating shaft is connected with the fixed frame or the elevator well, so that the whole formed by the detection switch, the switch mounting block, the first collision wheel, the rotating frame, the first rotating rod, the second rotating rod and the two second collision wheels can rotate around the rotating shaft;
a car blocking device is further arranged above the bottom elevator door opening and comprises a first rotating arm, a second rotating arm, a first jacking mechanism, a second jacking mechanism and a stopper; one end of the first rotating arm is rotatably connected with the side wall of the elevator shaft through a connecting frame, one end of the first jacking mechanism is rotatably connected with the side wall of the elevator shaft through a support, the other end of the first rotating arm is first connected, in an initial state, under the action of the first jacking mechanism, the first rotating arm is positioned between the side wall of the car and the side wall of the elevator shaft, and the other end of the first rotating arm extends to a position between the rear side of the car and the rear side of the elevator shaft; one end of the second rotating arm is rotatably connected with the other end of the first rotating arm, and the other end of the second rotating arm is connected with the stopper; one end of the second jacking mechanism is rotatably connected with the first rotating arm, the other end of the second jacking mechanism is rotatably connected with the second rotating arm, and in an initial state, the second rotating arm is positioned between the rear side of the lift car and the rear side of the lift shaft;
the control device comprises a detection switch, a first jacking mechanism, a second jacking mechanism and a controller, wherein the detection switch, the first jacking mechanism and the second jacking mechanism are all connected with the control device; be equipped with a car at the downside of car and hit the piece, the car hits the piece and car fixed connection, when first climbing mechanism and second climbing mechanism all extend, the stopper in the time of can with the car hits the piece just right.
Furthermore, the transverse section of the switch mounting block is L-shaped, the detection switch is fixedly connected with the inner wall of one side of the switch mounting block, the rotating frame is fixedly connected with the outer side of the other side of the switch mounting block, and the reset spring is positioned between the detection switch and the other side of the switch mounting block.
Furthermore, one end of the landing door collision block and the car door collision block, which is close to the landing door position detection device, extends to the outer sides of the landing door and the car door and extends in the direction away from each other.
Further, detection switch is knob switch or rotary switch, and the swinging boom can drive knob switch or rotary switch's dabber and rotate, and wherein, be equipped with the torsional spring on the dabber, after the power of acting on the swinging boom disappears, enable the dabber to drive the swinging boom and reset.
Further, the first jacking mechanism and the second jacking mechanism are both electric telescopic mechanisms, air cylinders or hydraulic cylinders.
Furthermore, the car bumps the piece and adopts the steel sheet to be located the middle part of car downside, and with car fixed connection.
Further, the damper is a shock absorber.
Compared with the prior art, the invention has the following advantages: simple structure can effectively solve shallow pit elevator pit and overhaul the problem that the high space is not enough and have the potential safety hazard to guarantee the security that the elevator pit overhauld, and do not influence the operation of elevator, the people's of being convenient for trip.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Fig. 4 is a schematic view of the elevator landing door and car door being open simultaneously.
Fig. 5 is a schematic view of an elevator landing door when open.
Fig. 6 is a schematic view of the operation of the car blocking device.
Fig. 7 is a working principle diagram of the present invention.
In the figure: 1-elevator hoistway, 2-car, 3-car door, 4-elevator landing door, 5-door position detection device, 51-fixed frame, 52-detection switch, 53-switch installation block, 54-reset spring, 55-rotating frame, 56-first rotating rod, 57-second rotating rod, 58-rotating arm, 59-first collision wheel, 510-second collision wheel, 6-landing door collision block, 7-car door collision block, 8-car blocking device, 81-first rotating arm, 82-second rotating arm, 83-first jacking mechanism, 84-second jacking mechanism, 85-stopper, 86-connecting frame, 87-support, 9-controller, 10-car block.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
Example (b): referring to fig. 1 to 7, a safety protection device for pit inspection of a shallow pit elevator comprises an elevator shaft 1 and a car 2 system; the car 2 system comprises a car 2 and car doors 3, wherein the elevator shaft 1 is provided with elevator door openings corresponding to floors, and elevator landing doors 4 are arranged in the elevator door openings. In the elevator shaft 1, a landing door position detection device 5 is arranged on one side of the bottom elevator door opening, and the landing door position detection device 5 is positioned between the extension lines of the upper edge and the lower edge of the elevator landing door 4 and is close to the extension line of the upper edge or the lower edge of the elevator landing door 4. The position of the elevator landing door 4 adjacent to the car door 3, which corresponds to the landing door position detection device 5, is respectively provided with a landing door collision block 6 and a car door collision block 7, the length direction of the landing door collision block 6 and the car door collision block 7 is consistent with the opening and closing directions of the elevator landing door 4 and the car door 3, and the landing door collision block and the car door collision block are correspondingly fixedly connected with the elevator landing door 4 and the car door 3. During specific implementation, the landing door collision block 6 and the car door collision block 7 both adopt strip-shaped steel plates and are correspondingly fixedly connected with the elevator landing door 4 and the car door 3. One ends of the landing door collision blocks 6 and the car door collision blocks 7, which are close to the landing door position detection device 5, extend to the outer sides of the landing doors 4 and the car doors 3 and extend in the opposite directions; thus, the landing door collision block 6 and the car door collision block 7 can be better guided, and the landing door collision block is more conveniently contacted with the landing door position detection device 5.
The door position detecting apparatus includes a fixed frame 51, a detection switch 52, a switch mounting block 53, a return spring 54, a rotating frame 55, and first and second rotating levers 56 and 57. The fixing frame 51 is fixedly connected with the elevator shaft 1 and is provided with a vertically arranged mounting plate, when machining is carried out, the vertical section of the fixing frame 51 is L-shaped, the horizontal section of the fixing frame is fixedly connected with the elevator shaft 1, and the vertical section of the fixing frame forms the mounting plate. The mounting plate is aligned with the gap between the landing door 4 and the car door 3, is parallel to the landing door 4 and the car door 3, and extends above the upper edge or below the lower edge of the landing door 4 and the car door 3. The switch mounting block 53 is connected to the mounting plate through a return spring 54, wherein the return spring 54 is horizontally disposed, the length direction thereof is perpendicular to the mounting plate, and two ends of the return spring 54 are respectively fixedly connected to the mounting plate and the switch mounting block 53.
The detection switch 52 is fixedly connected with the switch mounting block 53 and is positioned on one side of the spring close to the elevator door opening, the detection switch 52 is provided with a rotating arm 58, and the rotating arm 58 can trigger the detection switch 52 when rotating. The detection switch 52 is a knob switch or a rotary switch, and the rotating arm 58 can drive a mandrel of the knob switch or the rotary switch to rotate, so that the detection switch 52 is switched on or sends a trigger signal; wherein, the mandrel is provided with a torsion spring, and when the force acting on the rotating arm 58 disappears, the mandrel can drive the rotating arm 58 to reset. The free end of the transmission arm extends towards the direction of the elevator door opening, bends towards the direction of the landing door 4 and then is connected with a first collision wheel 59, wherein a gap is formed between the first collision wheel 59 and the landing door collision block 6. The rotating frame 55 is V-shaped and horizontally arranged on one side of the return spring 54 departing from the elevator door opening, and one end of the return spring connected with two arms of the rotating frame is fixedly connected with the switch mounting block 53. During actual manufacturing, the transverse section of the switch mounting block 53 is in an L shape, the detection switch 52 is fixedly connected with the inner wall of one side of the switch mounting block 53, the rotating frame 55 is fixedly connected with the outer side of the other side of the switch mounting block 53, and the return spring 54 is positioned between the detection switch 52 and the other side of the switch mounting block 53; thus, the installation and fixation of the whole landing door position detection device 5 are more convenient, and the normal operation of the cage 2 is not influenced.
The first rotating rod 56 and the second rotating rod 57 are respectively connected with the other ends of the two support arms of the rotating frame 55 through a connecting shaft in a rotating manner, a torsion spring is further sleeved on the connecting shaft, one torsion arm of the torsion spring is fixedly connected with the support arm of the rotating frame 55, and the other torsion arm is correspondingly fixedly connected with the first rotating rod 56 and the second rotating rod 57; under the action of the torsion spring, the first rotating lever 56 and the second rotating lever 57 are respectively positioned on the same straight line with the two arms of the rotating frame 55. One end of the first rotating rod 56 and one end of the second rotating rod 57, which are far away from the support arm, are respectively provided with a second collision wheel 510, wherein one sides of the two second collision wheels 510, which are far away from each other, respectively protrude from extension lines of the landing door collision block 6 and the car door collision block 7, and when the car 2 is positioned at the bottom layer and the elevator landing door 4 and the car door 3 are opened simultaneously, the landing door collision block 6 and the car door collision block 7 can be simultaneously contacted with the corresponding second collision wheels 510. The one end that two arms of swivel mount 55 link to each other still rotates with the pivot of a vertical setting to be connected, and the upper end of this pivot is buckled the back to mount 51 orientation and is linked to each other with mount 51, or buckles the back to elevator well 1 lateral wall orientation and links to each other with elevator well 1, makes detection switch 52, switch installation piece 53, first wheel 59, swivel mount 55, first dwang 56, second dwang 57 and two second hit the whole of taking turns 510 formation and can rotate around this pivot.
A car blocking device 8 is further arranged above the bottom elevator door opening, and the car blocking device 8 comprises a first rotating arm 81, a second rotating arm 82, a first jacking mechanism 83, a second jacking mechanism 84 and a stopper 85. Wherein, first climbing mechanism 83 and second climbing mechanism 84 all adopt electronic telescopic machanism, cylinder or pneumatic cylinder, preferably electric putter or electronic jar etc. more are convenient for control operation to stability is better. One end of the first rotating arm 81 is rotatably connected with the side wall of the elevator shaft 1 through a connecting frame 86, one end of the first jacking mechanism 83 is rotatably connected with the side wall of the elevator shaft 1 through a bracket 87, and the other end of the first rotating arm 81 is in first connection; in specific implementation, the connecting frame 86 and the bracket 87 both include two supporting plates distributed up and down and a rotating shaft vertically arranged between the two supporting plates, and the first rotating arm 81 and the first jacking mechanism 83 are respectively and correspondingly connected with the rotating shaft. In an initial state, the first jacking mechanism 83 is in a contracted state, and under the action of the first jacking mechanism 83, the first rotating arm 81 is located between the side wall of the car 2 and the side wall of the elevator shaft 1, and the other end of the first rotating arm extends to a position between the rear side of the car 2 and the rear side of the elevator shaft 1. One end of the second rotating arm 82 is rotatably connected to the other end of the first rotating arm 81, and the other end thereof is connected to the stopper 85; one end of the second jacking mechanism 84 is rotatably connected with the first rotating arm 81, and the other end is rotatably connected with the second rotating arm 82; in the initial state, the second jacking mechanism 84 is also in a contracted state, and the second rotating arm 82 is positioned between the rear side of the car 2 and the rear side of the elevator shaft 1; in this way the whole blocking device does not affect the normal operation of the car 2 when it is not in operation. In specific implementation, the stopper 85 is a shock absorber, so that in the working process of the car blocking device 8, the collision between the car 2 and the stopper 85 can be effectively reduced, and the vibration and the noise are reduced. In order to ensure sufficient load-bearing capacity of the car blocking device 8, the first rotating arm 81 and the second rotating arm 82 each adopt a mechanical arm structure of a metal structure so as to be able to bear the weight of the entire car 2.
The automatic jacking system is characterized by further comprising a controller 9, the detection switch 52, the first jacking mechanism 83 and the second jacking mechanism 84 are all connected with the control device, and after the detection switch 52 acts, the controller 9 can control the first jacking mechanism 83 and the second jacking mechanism 84 to act correspondingly. As an embodiment, the detection switch 52 is provided with an angle sensor therein, and can detect a rotation angle of a core shaft (or a rotating arm) of the detection switch, after the rotating arm rotates, the angle sensor detects a signal, detects that the landing door 4 is opened, and then sends a trigger signal to the controller 9, and after receiving the trigger signal, the controller 9 controls the first jacking mechanism 83 and the second jacking mechanism 84 to be started, so that the first jacking mechanism 83 and the second jacking mechanism 84 extend to jack; when the signal detected by the detection switch disappears after the elevator floor door is closed, the controller 9 controls the first and second lifters 83 and 84 to retract again. As another embodiment, the controller 9 employs a conversion-type relay, the first jacking mechanism 83 and the second jacking mechanism 84 both employ electric push rods, a stationary contact of the relay is connected in series with the detection switch 52, and a normally open movable contact group and a normally closed movable contact group of the relay are connected in series with the first jacking mechanism 83 and the second jacking mechanism 84 respectively, wherein the normally open movable contact group and the normally closed movable contact group are opposite in power supply direction, and in an initial state, the first jacking mechanism 83 and the second jacking mechanism 84 are both in a contracted state; thus, the detection switch 52 is a common knob switch, and when the detection switch 52 is closed, the relay can control the first jacking mechanism 83 and the second jacking mechanism 84 to be electrified reversely, so that the first jacking mechanism 83 and the second jacking mechanism 84 extend out; when the detection switch 52 is turned off again, the relay restores the energization direction of the first jacking mechanism 83 and the second jacking mechanism 84, so that the first jacking mechanism 83 and the second jacking mechanism 84 retract; the whole control loop is simpler in structure and better in stability.
A car collision block 10 is arranged at the lower side of the car 2, and the car collision block 10 is fixedly connected with the car 2, wherein the car collision block 10 is made of a steel plate, is positioned at the middle part of the lower side of the car 2, and is fixedly connected with the car 2; thereby effectively improving the strength of the car striker 10. When the first jacking mechanism 83 and the second jacking mechanism 84 are both extended, the blocking device 85 can be opposite to the car collision block 10.
When the elevator car 2 normally runs to the bottom layer to open the door, the elevator landing door 4 and the car door 3 are simultaneously opened, the landing door collision block 6 and the car door collision block 7 simultaneously collide with the two second collision wheels 510, the torsional forces applied to the rotating frame 55 by the two torsional springs are mutually counteracted, the positions of the detection switch 52, the switch installation block 53 and the rotating frame 55 are all kept still, a gap is kept between the first collision wheel 59 on the detection switch 52 and the landing door collision block 6, the first collision wheel and the landing door collision block are not in contact, the car blocking device 8 does not act, and the up-and-down normal running of the elevator car 2 is not influenced.
When maintenance personnel need to enter an elevator pit to overhaul an elevator, the elevator car 2 is controlled to stop at a non-bottom position, then the bottom elevator landing door 4 is opened, at this time, only the elevator landing door 4 is opened, and after the landing door collision block 6 collides with the second collision wheel 510, the whole rotating frame 55, the switch mounting block 53 and the detection switch 52 are driven to rotate around the rotating shaft, and the switch mounting block 53 is driven to compress the reset spring 54, so that the first collision wheel 59 on the detection switch 52 collides with the landing door collision block 6, and the rotating arm 58 is driven to rotate to perform opening and closing actions. After the switch acts, a trigger signal is sent to the controller 9 or the controller 9 directly controls the car blocking device 8 to act, so that the car blocking device 8 extends, the blocking device 85 moves to the position right below the car collision block 10, the car 2 is prevented from continuously moving downwards, and the aim of preventing the elevator car 2 from moving downwards to threaten the safety of maintainers is fulfilled. Because car stop device 8 is located the elevator door opening upside of 1 bottom of elevator well, consequently, at whole maintenance in-process, elevator car 2 except can't be down the bottom layer, the operation of other floors is all normal to can reduce the elevator greatly and overhaul the influence to the elevator operation, the people's of being more convenient for trip.
When the maintenance of the maintenance personnel is finished, the floor door 4 of the bottom elevator is closed, the detection switch 52 of the floor door position detection device 5 is restored to the initial position under the action of the return spring 54, the detection switch 52 is restored, the controller 9 controls the car blocking device 8 to be restored to the initial state again, and the elevator is restored to the running state.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (7)
1. A safety protection device for pit maintenance of a shallow pit elevator comprises an elevator shaft and a car system, wherein the car system comprises a car and car doors, the elevator shaft is provided with elevator door openings corresponding to floors, and elevator landing doors are arranged in the elevator door openings; the method is characterized in that: a landing door position detection device is arranged on one side of the bottom elevator door opening and is close to the upper edge or the lower edge of the elevator landing door; a landing door collision block and a car door collision block are respectively arranged at the adjacent side of the elevator landing door and the car door and correspond to the position of the landing door position detection device, and the length direction of the landing door collision block and the car door collision block is consistent with the opening and closing direction of the elevator landing door and the car door and is correspondingly and fixedly connected with the elevator landing door and the car door;
the door position detection device comprises a fixed frame, a detection switch, a switch installation block, a return spring, a rotating frame, a first rotating rod and a second rotating rod; the fixing frame is fixedly connected with the elevator shaft and is provided with a vertically arranged mounting plate, and the mounting plate is opposite to the gap between the elevator landing door and the car door, is parallel to the elevator landing door and the car door, and extends to the upper edge of the elevator landing door and the upper edge of the car door or the lower edge of the car door; the switch mounting block is connected with the mounting plate through a return spring, wherein the return spring is horizontally arranged, and the length direction of the return spring is vertical to the mounting plate; the detection switch is fixedly connected with the switch mounting block and is positioned on one side, close to the elevator door opening, of the spring, the detection switch is provided with a rotating arm, the rotating arm can trigger the detection switch when rotating, the free end of the transmission arm extends towards the elevator door opening direction and is connected with a first collision wheel after being bent towards the landing door direction, and a gap is formed between the first collision wheel and the landing door collision block; the rotating frame is V-shaped and horizontally arranged on one side of the return spring, which is far away from the elevator door opening, and one end of the rotating frame, which is connected with the two support arms, is fixedly connected with the switch mounting block; the first rotating rod and the second rotating rod are respectively connected with the other ends of the two arms of the rotating frame in a rotating mode through a connecting shaft, a torsion spring is further sleeved on the connecting shaft, one torsion arm of the torsion spring is fixedly connected with the supporting arm of the rotating frame, the other torsion arm is correspondingly and fixedly connected with the first rotating rod and the second rotating rod, and the first rotating rod and the second rotating rod are respectively positioned on the same straight line with the two arms of the rotating frame under the action of the torsion spring; one end of the first rotating rod and one end of the second rotating rod, which are far away from the support arm, are respectively provided with a second collision wheel, wherein one sides of the two second collision wheels, which are far away from each other, respectively protrude out of extension lines of the landing door collision block and the car door collision block; one end of the rotating frame, which is connected with the two support arms, is also rotatably connected with a vertically arranged rotating shaft, and the rotating shaft is connected with the fixed frame or the elevator well, so that the whole formed by the detection switch, the switch mounting block, the first collision wheel, the rotating frame, the first rotating rod, the second rotating rod and the two second collision wheels can rotate around the rotating shaft;
a car blocking device is further arranged above the bottom elevator door opening and comprises a first rotating arm, a second rotating arm, a first jacking mechanism, a second jacking mechanism and a stopper; one end of the first rotating arm is rotatably connected with the side wall of the elevator shaft through a connecting frame, one end of the first jacking mechanism is rotatably connected with the side wall of the elevator shaft through a support, the other end of the first rotating arm is first connected, in an initial state, under the action of the first jacking mechanism, the first rotating arm is positioned between the side wall of the car and the side wall of the elevator shaft, and the other end of the first rotating arm extends to a position between the rear side of the car and the rear side of the elevator shaft; one end of the second rotating arm is rotatably connected with the other end of the first rotating arm, and the other end of the second rotating arm is connected with the stopper; one end of the second jacking mechanism is rotatably connected with the first rotating arm, the other end of the second jacking mechanism is rotatably connected with the second rotating arm, and in an initial state, the second rotating arm is positioned between the rear side of the lift car and the rear side of the lift shaft;
the control device comprises a detection switch, a first jacking mechanism, a second jacking mechanism and a controller, wherein the detection switch, the first jacking mechanism and the second jacking mechanism are all connected with the control device; be equipped with a car at the downside of car and hit the piece, the car hits the piece and car fixed connection, when first climbing mechanism and second climbing mechanism all extend, the stopper in the time of can with the car hits the piece just right.
2. The safety protection device for shallow pit elevator pit inspection according to claim 1, characterized in that: the transverse section of the switch mounting block is L-shaped, the detection switch is fixedly connected with the inner wall of one side of the switch mounting block, the rotating frame is fixedly connected with the outer side of the other side of the switch mounting block, and the reset spring is positioned between the detection switch and the other side of the switch mounting block.
3. The safety protection device for shallow pit elevator pit inspection according to claim 1, characterized in that: the landing door collision block and the car door collision block extend to the outer sides of the landing door and the car door and extend in the direction away from each other at the end close to the landing door position detection device.
4. The safety protection device for shallow pit elevator pit inspection according to claim 1, characterized in that: the detection switch is a rotary switch or a rotary switch, the rotary arm can drive a mandrel of the rotary switch or the rotary switch to rotate, wherein the mandrel is provided with a torsion spring, and the mandrel can drive the rotary arm to reset after force acting on the rotary arm disappears.
5. The safety protection device for shallow pit elevator pit inspection according to claim 1, characterized in that: and the first jacking mechanism and the second jacking mechanism both adopt electric telescopic mechanisms, air cylinders or hydraulic cylinders.
6. The safety protection device for shallow pit elevator pit inspection according to claim 1, characterized in that: the car bumps the piece and adopts the steel sheet to be located the middle part of car downside, and with car fixed connection.
7. The safety protection device for shallow pit elevator pit inspection according to claim 1, characterized in that: the damper is a shock absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168019.6A CN110745674B (en) | 2019-11-25 | Safety protection device for overhauling pit of shallow pit elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168019.6A CN110745674B (en) | 2019-11-25 | Safety protection device for overhauling pit of shallow pit elevator |
Publications (2)
| Publication Number | Publication Date |
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| CN110745674A true CN110745674A (en) | 2020-02-04 |
| CN110745674B CN110745674B (en) | 2024-05-14 |
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