CN217102578U - An elevator car safety gear and speed limiter linkage test display device - Google Patents

Abstract

The utility model discloses a linkage test display device of elevator car safety tongs and a speed limiter, which comprises a derrick and a derrick enclosure, the derrick is connected with a car model in a sliding way through a guide rail, the bottom of the derrick is provided with a buffer, the car model is provided with a collision bow, the left side and the right side of the car model are provided with safety tongs, the safety tongs are provided with an electric switch, the top of the derrick is provided with an electric hoist and a speed limiter through a fixed frame, the output end of the electric hoist is connected with a magnetic sucker for sucking the top end of the car model through a rope, the overspeed governor pass through wire rope with the pull rod of safety tongs is connected, the utility model provides a platform device of linkage test between each safety part under the whole fracture conditions of simulation elevator car wire rope, greatly reduced the experimental cost and the experimental operation degree of difficulty, made huge contribution for the safety of elevator and the popularization of safety knowledge.

Description

An elevator car safety gear and speed governor linkage test display device

technical field

The utility model relates to the technical field of elevator car simulation safety brake testing, in particular to an elevator car safety gear and speed limiter linkage test display device.

Background technique

As we all know, the elevator has a car. The size and structure of the car are convenient for passengers to enter and exit or load and unload goods. The safety components on the elevator mainly include brakes (brakes), speed limiters, buffers, safety gears, etc.;

Conventional elevators are not easy to conduct safety tests due to factors such as bulky size and installation environment. It is not convenient to use them for safety demonstrations to the public at any time, and the actual situation of each city is also different. There will be various troubles in performing safety tests on on-site elevators.

Therefore, it is necessary to design a platform device for simulating the safety test of the elevator car to simulate the linkage protection between the various safety components when the elevator car traction ropes are all broken. The car can also be reliably stopped, which is very important for the popularization of elevator safety knowledge.

Utility model content

The technical problem to be solved by the utility model is: in order to solve the problems existing in the prior art in the above-mentioned background technology, provide an elevator car safety gear and speed governor linkage test display device.

The technical solution adopted by the utility model to solve the technical problem is: a display device for elevator car safety tongs and speed limiter linkage test, including a derrick and a derrick enclosure, and a car model is slidingly connected to the derrick through guide rails. , the bottom of the derrick is provided with a buffer, the car model is provided with a bumper bow, the left and right sides of the car model are provided with safety gear, and the safety gear is provided with an electrical switch; the top of the derrick passes through the fixed frame An electric hoist and a speed limiter are installed, and the output end of the electric hoist is connected with a magnetic sucker for sucking the top of the car model through a rope, and the speed limiter is connected with the linkage mechanism of the safety gear through a wire rope; A control cabinet is also provided at the bottom of the derrick, and a button group is arranged on the control cabinet, and the button group is electrically connected with components such as an electric hoist and a magnetic sucker.

The utility model adopts the electric hoist and the magnetic sucker to replace the technical scheme of the traction machine, which is convenient for simulating the situation that the traction rope is completely broken, so as to facilitate the test of the linkage between various safety components, and cooperate with the operation of the electric control cabinet to make the elevator safe. The simulation test is more convenient, and it can efficiently and clearly display the elevator safety knowledge and promote it better.

Further, in order to ensure accurate speed response of the speed governor, the bottom of the derrick described in the utility model is also provided with a tensioning wheel for tightening the steel wire rope of the speed governor, and the tensioning wheel is installed on the derrick through a fixing plate. The wire rope converts the vertical movement of the elevator into the rotational movement of the governor. When the rotation speed of the speed limiter exceeds the limit value, the speed limiter first makes the overspeed switch act to cut off the power supply of the elevator control circuit, so that the electromagnetic brake loses power and brakes. If the brake fails, if the elevator goes down at this time, the speed limiter will block the wire rope, forcing the safety gear to act and force the elevator to stop on the guide rail. When the clamp moves, its switch moves and cuts off the control loop. Neither the speed limiter nor the safety gear can complete the above tasks alone. The completion of the above tasks is achieved by their cooperation.

Furthermore, the derrick enclosure of the utility model is also provided with a switch assembly that cooperates with the traveling route of the bumper bow. When the bumper bow moves up and down with the car model, it hits the corresponding switch assembly to trigger an action command to ensure the safe operation of the elevator.

Furthermore, the switch assembly described in the present utility model includes limit switches arranged at the upper and lower ends of the stroke of the bow, and a forced switch at the middle.

Further, the connection relationship of the linkage mechanism described in the present invention is described as: the speed limiter rope pulls the right side safety gear wedge through the lever to make the right side safety gear move; at the same time, the speed limiter rope end The action of the left safety gear pulls the left safety gear wedge through the linkage system to make the left safety gear move. During the action of the connecting rod, the electric safety device is activated through the pull plate on the lever, and the electric safety circuit is cut off to stop the motor.

experiment method:

S1: first close the main switch in the control cabinet and send power;

S2: Turn the test switch to the "OFF" position, press the "platform down" button, and when the magnetic suction cup contacts the car model, release the "platform down" button;

S3: Press the "suction cup action" button, the green indicator light is on, and the suction cup is attracted to the car;

S4: Press and hold the "platform up" button to raise the car to the upper limit position;

S5: Turn the test switch to the "ON" position, press the "suction cup release" button, and immediately turn the test switch to the "OFF" position, the car model safety gear acts and the car stops;

S6: Press and hold the "Platform Down" button, when the magnetic suction cup touches the car, release the "Platform Down" button;

S7: Press and hold the "suction cup action" button, and the suction cup will engage with the car;

S8: Press and hold the "platform up" button to raise the car to the upper limit position;

S9: Test again and repeat steps S2 to S8 as needed, press and hold the "platform down" button after the test, and lower the car model to the buffer;

S10: Press and hold the "suction cup release" button, then press the "platform up" button to lift the magnetic suction cup to its initial position;

S11: Make sure that the car model is on the buffer and the magnetic chuck is at the initial position, disconnect the main switch in the control cabinet, and the test is over;

be careful:

1. When the motor cannot stop rotating, press the "emergency stop" button, and when the car does not reach the limit position, please do not press the "suction cup release" button;

2. Prevent the speed limiter and safety gear from operating reliably due to some operational, mechanical or electrical reasons during the elevator operation, and the forced switch can force the speed limiter to act.

The beneficial effects of the utility model are: the utility model is a platform device for simulating the linkage test between the safety components under the condition that the traction rope of the elevator car is completely broken, which reduces the large-scale elevator equipment to a reasonable test range and greatly reduces the test time. Cost and difficulty of test operation, combined with electric hoist and magnetic chuck, the test work is efficient and convenient, and the whole set of equipment after being reduced in size can be easily transported to safety education bases in various cities, making great contributions to the popularization of elevator safety knowledge.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural representation of another perspective in the utility model;

Fig. 3 is a partially enlarged view of A in the utility model.

In the figure: 1. Derrick, 2. Steel wire rope, 3. Car model, 4. Buffer, 5. Crash bow, 6. Safety gear, 7. Fixed frame, 8. Electric hoist, 9. Speed limiter, 10. Rope, 11. magnetic sucker, 12. control cabinet, 13. tensioner, 14. fixed plate, 15. limit switch, 16. forced switch.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figures 1 to 3, an embodiment of an elevator car safety tongs and overspeed governor linkage test display device of the present utility model includes a derrick 1 and a derrick enclosure, and the derrick 1 is slidingly connected by a guide rail. The car model 3 is provided with a buffer 4 at the bottom of the derrick 1, the car model 3 is provided with a bumper bow 5, the left and right sides of the car model 3 are provided with safety gears 6, and the safety gear 6 is provided with electrical switch;

The top of the derrick 1 is equipped with an electric hoist 8 and a speed limiter 9 through a fixed frame 7, and the output end of the electric hoist 8 is connected with a magnetic chuck 11 for sucking the top of the car model 3 through a rope 10. The overspeed governor 9 is connected with the linkage mechanism of the safety gear 6 through the wire rope 2;

The bottom of the derrick 1 is also provided with a control cabinet 12, and the control cabinet 12 is provided with a button group, and the button group is electrically connected with the electric hoist 8, the magnetic chuck 11 and other components.

Wherein, the bottom of the derrick 1 described in the utility model is also provided with a tensioning pulley 13 for tensioning the speed limiter 9 steel wire rope 2, the tensioning pulley 13 is installed on the derrick 1 through the fixing plate 14, and the derrick is enclosed. There is also a switch assembly that cooperates with the route of the bumper bow 5. When the bumper bow 5 moves up and down following the car model 3, it hits the corresponding switch assembly to trigger an action command to ensure the safe operation of the elevator. The switch assembly includes limit switches 15 arranged at the upper and lower ends of the route of the ram 5 and a forced switch 16 at the middle.

The wire rope 2 of the overspeed governor 9 pulls the right side safety gear 6 wedges through the lever to make the right side safety gear 6 move; at the same time, the wire rope 2 moves to pull the left side safety gear 6 wedges through the connecting rod system to make the right side safety gear 6 move. The safety gear 6 on the left side moves, and the electric safety device is moved by the pull plate on the lever during the action of the connecting rod, and the electric safety circuit is cut off to stop the motor.

Working principle: The wire rope converts the vertical movement of the elevator into the rotational movement of the speed limiter. When the rotation speed of the speed limiter exceeds the limit value, the speed limiter first makes the overspeed switch act to cut off the power supply of the elevator control circuit, so that the electromagnetic brake loses power and brakes. If the brake fails, if the elevator goes down at this time, the speed limiter will block the wire rope, forcing the safety gear to act and force the elevator to stop on the guide rail. When the clamp moves, its switch moves and cuts off the control loop. Neither the speed limiter nor the safety gear can complete the above tasks alone. The completion of the above tasks is achieved by their cooperation.

The utility model adopts the electric hoist and the magnetic sucker to replace the technical scheme of the traction machine, which is convenient for simulating the situation that the traction rope is completely broken, so as to facilitate the test of the linkage between various safety components, and cooperate with the operation of the electric control cabinet to make the elevator safe. The simulation test is more convenient, and it can efficiently and clearly display the elevator safety knowledge and promote it better.

experiment method:

S1: first close the main switch in the control cabinet and send power;

S2: Turn the test switch to the "OFF" position, press the "platform down" button, and when the magnetic suction cup contacts the car model, release the "platform down" button;

S3: Press the "suction cup action" button, the green indicator light is on, and the suction cup is attracted to the car;

S4: Press and hold the "platform up" button to raise the car to the upper limit position;

S5: Turn the test switch to the "ON" position, press the "suction cup release" button, and immediately turn the test switch to the "OFF" position, the car model safety gear acts and the car stops;

S6: Press and hold the "Platform Down" button, when the magnetic suction cup touches the car, release the "Platform Down" button;

S7: Press and hold the "suction cup action" button, and the suction cup will engage with the car;

S8: Press and hold the "platform up" button to raise the car to the upper limit position;

S9: Test again and repeat steps S2 to S8 as needed, press and hold the "platform down" button after the test, and lower the car model to the buffer;

S10: Press and hold the "suction cup release" button, then press the "platform up" button to lift the magnetic suction cup to its initial position;

S11: Make sure that the car model is on the buffer and the magnetic chuck is at the initial position, disconnect the main switch in the control cabinet, and the test is over.

be careful:

1. When the motor cannot stop rotating, press the "emergency stop" button, and when the car does not reach the limit position, please do not press the "suction cup release" button;

2. Prevent the speed limiter and safety gear from operating reliably due to some operational, mechanical or electrical reasons during the elevator operation, and the forced switch can force the speed limiter to act.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (5)

1. An elevator car safety gear and speed governor linkage test display device, is characterized in that: comprise derrick (1), derrick enclosing, in described derrick (1), be connected with car model (3 by guide rail sliding ), the bottom of the derrick (1) is provided with a buffer (4), the car model (3) is provided with a bumper bow (5), and the left and right sides of the car model (3) are provided with safety gears (6) , the safety gear (6) is provided with an electric switch; the top of the derrick (1) is equipped with an electric hoist (8) and a speed limiter (9) through a fixed frame (7), and the electric hoist (8) The output end of the car model (3) is connected with a magnetic chuck (11) for sucking the top of the car model (3) through a rope (10), and the speed limiter (9) is connected with the safety gear (6) through a wire rope (2) Linkage connection. 2. An elevator car safety gear and overspeed governor linkage test display device as claimed in claim 1, characterized in that: the bottom of the derrick (1) is also provided with a steel wire rope ( 2) the tension wheel (13), the tension wheel (13) is installed on the derrick (1) through the fixed plate (14). 3. A display device for elevator car safety gear and overspeed governor linkage test as claimed in claim 1, characterized in that: the derrick enclosure is also provided with a ram that matches the travel route of the bumper bow (5). switch components. 4. An elevator car safety gear and overspeed governor linkage test display device according to claim 3, characterized in that: the switch assembly includes limit switches arranged at the upper and lower ends of the bumper (5) travel route (15), the forced switch (16) in the middle part. 5. A kind of elevator car safety gear and overspeed governor linkage test display device as claimed in claim 1, characterized in that: the bottom of the derrick (1) is also provided with a control cabinet (12), and the control cabinet ( 12) is provided with a button group, and the button group is electrically connected with the electric hoist (8) and the magnetic chuck (11).

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