CN210682884U - Elevator falling-prevention safety system - Google Patents
Elevator falling-prevention safety system Download PDFInfo
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- CN210682884U CN210682884U CN201920811654.0U CN201920811654U CN210682884U CN 210682884 U CN210682884 U CN 210682884U CN 201920811654 U CN201920811654 U CN 201920811654U CN 210682884 U CN210682884 U CN 210682884U
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Abstract
The utility model discloses a safety coefficient that falls is prevented to elevator, this safety coefficient that falls is prevented to elevator include that a plurality of prevents falling safety device, induction system, is equipped with induction system on the well wall of the left and right sides, the safety device that falls includes spring mechanism, telescopic machanism, PLC switch board, spring mechanism one end and well wall fixed connection, the other end and telescopic machanism fixed connection, this safety coefficient that falls is prevented to elevator is opened at the response button of the inside or every floor of elevator car, and induction system starts the back, and the spring mechanism that the left and right sides is less than the bottom of the car horizontal plane plays the effect and makes telescopic machanism stretch out or retract under the control of PLC switch board. The utility model has the advantages that when the elevator takes place the phenomenon of falling or the elevator is uncontrolled, this elevator system of preventing falling can prevent that elevator car down falls.
Description
Technical Field
The utility model belongs to the technical field of elevator safety, especially, relate to a safety coefficient that falls is prevented to elevator.
Background
Elevator falls are among the most serious accidents of elevator failure. An elevator fall is caused by a failure of the braking system of the elevator or by wear of the surface of the traction sheave. There are two main types of situations where an elevator falls: one is that a person is already in the car, the elevator suddenly loses control, and the person and the car suddenly fall down together: there is also a case where a person walks into the elevator door, but the person does not find that the car is not at the floor because the person looks down at the mobile phone, etc., and the person steps on the floor and then freely falls in the hoistway. To the circumstances that first kind elevator falls, the elevator needs safety gear to play a role under the out of control state, but safety gear often can be out of order. A plurality of rotating pairs exist in the speed limiter-safety gear system, but if the rotation pairs are not maintained in place in ordinary maintenance, the rotating pairs rust, and the whole system fails. None of these safety devices can stop the elevator from falling by a hundred percent if the elevator falls.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve the problem that the elevator that above-mentioned exists falls, provide a safety coefficient that falls is prevented to elevator.
The utility model adopts the technical scheme as follows:
the utility model provides a safety coefficient that falls is prevented to elevator, this safety coefficient that falls is prevented to elevator includes that a plurality of prevents falling safety device, induction system, is equipped with induction system on the well wall of the left and right sides, prevent falling safety device and include spring mechanism, telescopic machanism, PLC switch board, spring mechanism one end and well wall fixed connection, the other end and telescopic machanism fixed connection, this safety coefficient that falls is prevented to elevator is opened at the response button of the inside or every floor of elevator car, and after induction system started, the spring mechanism that the left and right sides is less than the bottom of car horizontal plane played and is made telescopic machanism stretch out or retract under the control of PLC switch board.
Further, telescopic machanism includes telescopic link, connecting rod.
Further, the anti-falling safety device further comprises a limiting mechanism, the limiting mechanism is electrically connected with the PLC control cabinet and is installed on the well wall, the limiting mechanism comprises a support frame, a gear, a steel wire rope and a support rod, the support frame is installed on the well walls of the two sides, one side of the gear is fixedly connected with the support frame, the support rod is fixedly installed on a connecting rod of the telescopic mechanism, a rope hanging ring is arranged on the support rod, the topmost end of the gear and the rope hanging ring are located on the same horizontal line, and the steel wire rope and the rope hanging ring are fixedly connected to the gear in a winding mode. The limiting mechanism can enable the connecting rod of the telescopic mechanism to move towards the car through rotation of the gear, the connecting rod stretches into the telescopic rod to push the telescopic rod layer by layer, the spring mechanism has the maximum stretching amount due to limitation of the steel wire rope, and the spring mechanism cannot fail due to excessive stretching.
Furthermore, the telescopic link among the telescopic machanism is hollow, and telescopic pole is the echelonment among the telescopic link, and the length of the connecting rod among the telescopic machanism is greater than the overall length that the telescopic link stretches out, and during the connecting rod stretched into the telescopic link, the inside swing joint of connecting rod and telescopic link one end. The telescopic rod is hollow, so that the connecting rod can eject the retracted part in the telescopic rod.
Further, induction system on the both sides well wall distributes about the center pin symmetry of car, induction system includes a plurality of induction point, induction point evenly distributed has four induction points on the same horizontal plane of the well wall of the left and right sides on the well wall, and the distance of two induction points on the same horizontal plane of every side is less than the width of car. When induction button of induction device inside or every floor of elevator car was opened, induction device began to act on, and the sensing point on the left and right sides well wall was when sensing the car and being in the upside of certain four same horizontal plane sensing points, under the effect of PLC switch board, and anti-falling safety device began to act on.
Further, the fall protection safety devices are symmetrically distributed about a central axis of the car. The anti-falling safety devices on the same horizontal plane on two sides of the hoistway wall act simultaneously under the control of the PLC control cabinet, the telescopic rods on the left side and the right side extend out until the telescopic rods on the two sides extend out completely to be positioned at the bottom of the car, and the car stops stably when falling.
Further, the anti-falling safety device is arranged on one side of the sensing point and is on the same horizontal line with the sensing point. The induction point and the anti-falling safety device are positioned on the same horizontal line, and when the induction point at a certain point induces that the lift car is positioned on the upper side of the horizontal plane of the induction point, the anti-falling safety device can block the falling lift car in time to prevent the lift car from falling.
Further, the telescopic rod is made of alloy steel. The alloy steel has good comprehensive mechanical property and enough hardness to bear the impact force when the lift car falls down.
The utility model discloses following beneficial effect has: when the elevator falls or is not controlled, the elevator falling prevention system can prevent the elevator car from falling downwards.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
figure 2 is an enlarged view of the fall arrest safety device.
In the figure, 1 is a sensing point, 210 is a support frame, 220 is a gear, 230 is a steel wire rope, 240 is a support rod, 241 is a rope hanging ring, 310 is a telescopic rod, 320 is a connecting rod, 4 is a spring mechanism, 5 is a hoistway wall, 6 is a PLC control cabinet, and 7 is a car.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example (b): as shown in fig. 1 to 2, the elevator falling prevention safety system comprises a plurality of falling prevention safety devices and sensing devices, wherein the sensing devices are arranged on the shaft walls 5 on the left side and the right side, each falling prevention safety device comprises a spring mechanism 4, a telescopic mechanism and a PLC control cabinet 6, one end of each spring mechanism 4 is fixedly connected with the shaft wall 5, the other end of each spring mechanism is fixedly connected with the telescopic mechanism, the elevator falling prevention safety system is opened by a sensing button inside an elevator car 7 or on each floor, and after the sensing devices are started, the spring mechanisms 4 of which the left side and the right side are lower than the horizontal plane of the bottom of the elevator car act to enable the telescopic mechanisms to extend or retract.
The telescopic mechanism comprises a telescopic rod 310 and a connecting rod 320.
Anti-falling safety device still includes stop gear, stop gear electricity federation PLC switch board 6 and install on well wall 5, stop gear includes support frame 210, gear 220, wire rope 230, bracing piece 240, support frame 210 installs on the well wall 5 of both sides, gear 220 one side and support frame 210 fixed connection, bracing piece 240 fixed mounting is on telescopic machanism's connecting rod 320, be equipped with rope rings 241 on the bracing piece 240, the topmost of gear 220 is in same water flat line with rope rings 241, winding wire rope 230 and rope rings 241 fixed connection on the gear 220. The limiting mechanism can enable the connecting rod 320 of the telescopic mechanism to move towards the car direction through the rotation of the gear 220, the connecting rod 320 extends into the telescopic rod 310 to push the telescopic rod 310 layer by layer, the spring mechanism 4 has the maximum stretching amount due to the limitation of the steel wire rope 230, and the spring mechanism 4 cannot fail due to excessive stretching.
The telescopic rod 310 in the telescopic mechanism is hollow, the telescopic rod in the telescopic rod 310 is in a step shape, the length of the connecting rod 320 in the telescopic mechanism is larger than the total length of the telescopic rod 310, the connecting rod 320 extends into the telescopic rod 310, and the connecting rod 320 is movably connected with the inner part of one end of the telescopic rod 310. Since the telescopic rod 310 is hollow, the connecting rod 320 can eject the retracted portion of the telescopic rod 310.
The induction system on both sides well wall 5 distributes about car 7's center pin symmetry, induction system includes a plurality of induction point 1, induction point 1 evenly distributed has four induction point 1 on the same horizontal plane of left and right sides well wall 5 on well wall 5, and the distance of two induction point 1 on the same horizontal plane of every side is less than car 7's width. When induction button of induction system inside or every floor at elevator car 7 was opened, induction system began to act on, and induction point 1 on the left and right sides well wall was when sensing car 7 and being in the 1 upside of certain four same horizontal plane induction point, under the effect of PLC switch board 6, the safety device that prevents falling began to act on.
The fall arrest safety devices are symmetrically distributed about the central axis of the car 7. The anti-falling safety devices on the same horizontal plane at two sides of the hoistway wall 5 act simultaneously under the control of the PLC control cabinet 6, and the telescopic rods 310 at the left side and the right side extend out until the telescopic rods 310 at the two sides completely extend out to be positioned at the bottom of the car 7, so that the car 7 stops stably when falling.
The anti-falling safety device is arranged on one side of the sensing point 1 and is on the same horizontal line with the sensing point 1. The induction point 1 and the anti-falling safety device are positioned on the same horizontal line, and when the induction point 1 at a certain point induces that the lift car 7 is positioned on the upper side of the horizontal plane of the induction point 1, the anti-falling safety device can block the falling lift car 7 in time to prevent the lift car 7 from falling.
The telescopic rod 310 is made of alloy steel. The alloy steel has good comprehensive mechanical property and enough hardness to bear the impact force when the lift car falls down.
When people suddenly control the elevator in the elevator and the elevator starts to fall down, passengers only need to press a sensing button inside the elevator, if the passengers waiting for taking the elevator outside the elevator find that the elevator is abnormal, the sensing button on a floor can be pressed, the elevator anti-falling system starts to work, a sensing point 1 of a sensing device starts to work, when the sensing point 1 senses that the elevator really stops on a certain floor and cannot work or the elevator rapidly falls down, anti-falling safety devices on the well walls 5 on two sides lower than the horizontal plane of the bottom of the elevator car start to work, a PLC control cabinet 6 sends a command, a gear 220 of a limiting mechanism starts to rotate, a steel wire rope 230 is lengthened, a spring mechanism 4 is lengthened, a connecting rod 320 fixedly connected with a supporting rod 240 moves towards the direction of the elevator car 7, the connecting rod 320 completely pushes out a telescopic rod 310, and the telescopic rods 310 on the left side and the right side, the car 7 will not move downwards any more. Passengers only need to wait for a serviceman to service the elevator in the elevator. After the maintenance personnel has repaired the elevator, the sensing device is closed, the gear 220 rotates to withdraw the steel wire rope 230, the spring mechanism 4 rebounds to the initial position to drive the telescopic rod 310 and the connecting rod 320 to recover the original position, and the maintenance personnel needs to recover the telescopic rod 310 to the retracted state.
The elevator anti-falling safety system starts to work after the induction button is opened, and mainly aims to prevent the normal elevator from being prevented from moving due to the fact that the induction device makes wrong judgment.
Claims (8)
1. The utility model provides a safety coefficient that falls is prevented to elevator which characterized in that, this safety coefficient that falls is prevented to elevator includes that a plurality of prevents falling safety device, induction system, is equipped with induction system on the well wall (5) of the left and right sides, prevent falling safety device and include spring mechanism (4), telescopic machanism, PLC switch board (6), spring mechanism (4) one end and well wall (5) fixed connection, the other end and telescopic machanism fixed connection, this safety coefficient that falls is prevented to elevator is opened at the response button of inside or every floor of elevator car (7), and after induction system started, spring mechanism (4) that the left and right sides is less than the car bottom horizontal plane played and made telescopic machanism stretch out or retract under the control of PLC switch board (6).
2. An elevator fall arrest safety system according to claim 1, wherein the telescopic mechanism comprises a telescopic rod (310), a connecting rod (320).
3. The elevator anti-falling safety system according to claim 1, characterized in that the anti-falling safety device further comprises a limiting mechanism, the limiting mechanism is electrically connected with the PLC control cabinet (6) and is installed on the hoistway wall (5), the limiting mechanism comprises a support frame (210), a gear (220), a steel wire rope (230) and a support rod (240), the support frame (210) is installed on the hoistway walls (5) at two sides, one side of the gear (220) is fixedly connected with the support frame (210), the support rod (240) is fixedly installed on a connecting rod (320) of the telescopic mechanism, a rope hanging ring (241) is arranged on the support rod (240), the topmost end of the gear (220) and the rope hanging ring (241) are on the same horizontal line, and the steel wire rope (230) wound on the gear (220) is fixedly connected with the rope hanging ring (241).
4. An elevator fall arrest safety system according to claim 2, characterized in that the telescopic rod (310) of the telescopic mechanism is hollow, the telescopic rod (310) is stepped, the length of the connecting rod (320) of the telescopic mechanism is greater than the total length of the telescopic rod (310) which extends, the connecting rod (320) extends into the telescopic rod (310), and the connecting rod (320) is movably connected to the inside of one end of the telescopic rod (310).
5. An elevator fall-prevention safety system according to claim 1, characterized in that the induction devices on the shaft walls (5) on both sides are symmetrically distributed about the central axis of the car (7), and the induction devices comprise a plurality of induction points (1), the induction points (1) are uniformly distributed on the shaft walls (5), four induction points (1) are arranged on the same horizontal plane of the shaft walls (5) on both left and right sides, and the distance between two induction points (1) on the same horizontal plane on each side is smaller than the width of the car (7).
6. An elevator fall arrest safety system according to claim 1, wherein the fall arrest safety devices are distributed symmetrically about the central axis of the car (7).
7. An elevator fall arrest safety system according to claim 1, characterized in that the fall arrest safety device is mounted to one side of the sensing point (1) and is level with the sensing point (1).
8. An elevator fall arrest safety system according to claim 2, wherein the telescopic rod (310) is of alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920811654.0U CN210682884U (en) | 2019-05-31 | 2019-05-31 | Elevator falling-prevention safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920811654.0U CN210682884U (en) | 2019-05-31 | 2019-05-31 | Elevator falling-prevention safety system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210682884U true CN210682884U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920811654.0U Active CN210682884U (en) | 2019-05-31 | 2019-05-31 | Elevator falling-prevention safety system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210682884U (en) |
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2019
- 2019-05-31 CN CN201920811654.0U patent/CN210682884U/en active Active
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