CN210480516U - Height-variable buffer group for elevator - Google Patents

Abstract

The utility model relates to a height-variable buffer group for elevator, including the buffer body, its technical essential is: the buffer body comprises a movable main buffer and a fixed auxiliary buffer, wherein the height of the movable main buffer is calculated according to the rated speed of the elevator, the height of the fixed auxiliary buffer is calculated according to the crawling speed of the elevator, the crawling speed of the elevator is smaller than the rated speed of the elevator, a guide seat is arranged at the bottom of the movable main buffer and is positioned on a sliding guide rail fixed on the bottom surface of an elevator pit, one end of the sliding guide rail is provided with a stop block, the other end of the sliding guide rail is provided with a stop block, a compression spring is connected between the guide seat and the stop block, one side, connected with the compression spring, of the guide seat is additionally connected with a steel wire rope for movement, the. Fundamentally solves the limited elevator rated speed of current elevator buffer, leads to the darker problem of elevator pit, reduces the elevator pit degree of depth greatly, practices thrift construction cost, and the elevator of being convenient for overhauls and maintains.

Description

Height-variable buffer group for elevator

Technical Field

The utility model relates to an elevator safety equipment, especially a height-variable buffer group for elevator.

Background

The safety equipment of an elevator mainly comprises the following components:

speed limiter: detecting the real-time speed of the elevator, and if the elevator is overspeed, triggering the safety gear to act by the speed limiter;

safety tongs: when the elevator is overspeed, the elevator can be stopped by triggering the speed limiter;

a buffer: when the safety gear fails to brake effectively or stalls at a speed not higher than the rated speed at a low floor, the car is protected.

In conclusion, when the elevator runs, the speed limiter monitors the speed of the elevator all the time, and when the speed of the elevator exceeds the rated speed, the safety tongs are triggered to stop the elevator; when the elevator is not stopped at the low-level flat floor, the buffer is impacted at a speed not greater than the rated speed, and the elevator is stopped.

At present, the buffer that the elevator adopted is fixed in the pit bottom, and highly certain, owing to there being the existence of buffer when the elevator is at the lowest floor flat bed, the pit needs corresponding deepening. Because of the standard requirement, the height of the buffer has a direct relation with the rated speed V of the elevator, therefore, when the rated speed of the elevator is determined, the size of the buffer is fixed, the depth of the pit of the elevator is relatively fixed and is usually deeper, the construction cost is increased, and the maintenance of the elevator are inconvenient at ordinary times.

Disclosure of Invention

The utility model aims at providing a rational in infrastructure, use reliable elevator with high variable buffer group, fundamentally solves the limited elevator rated speed of current elevator buffer, leads to the darker problem of elevator pit, reduces the elevator pit degree of depth greatly, practices thrift construction cost, the elevator of being convenient for overhauls and maintains.

The technical scheme of the utility model is that:

the utility model provides a height-variable buffer group for elevator, includes the buffer body, and its technical essential is: the buffer body consists of a movable main buffer and a fixed auxiliary buffer, the height of the movable main buffer is calculated according to the rated speed of the elevator, the crawling speed of the elevator is lower than the rated speed of the elevator, the bottom of the movable main buffer is provided with a guide seat, the guide seat is arranged on a sliding guide rail fixed on the bottom surface of a pit of the elevator, one end of the sliding guide rail is provided with a stop block, the other end of the sliding guide rail is provided with a stop block, a compression spring is connected between the guide seat and the stop block, one side of the guide seat, which is connected with the compression spring, is additionally connected with a steel wire rope for movement, the tail end of the steel wire rope for movement is connected with a driving mechanism, the driving mechanism is electrically connected with a crawling speed monitoring mechanism, when the elevator reaches a set distance from the flat floor, the crawling speed monitoring mechanism monitors whether the, when the running speed of the elevator is the crawling speed, the driving mechanism pulls the steel wire rope for movement to drive the movable main buffer to leave the pit area corresponding to the buffer area on the bottom surface of the elevator car.

The height-variable buffer group for the elevator is characterized in that the driving mechanism comprises a supporting pulley which is supported on the wall of the elevator shaft, a guide wheel group which guides the free end of a steel wire rope for movement to the supporting pulley, a vertical guide rail I which is arranged on the wall of the elevator shaft, a sliding base which is arranged on the vertical guide rail I, a swing rod which is hinged on the sliding base by a rotating shaft, a torsion spring which is sleeved on the rotating shaft and two ends of which are respectively connected with the sliding base and the swing rod, an electromagnet which is fixed on the sliding base, and a push plate I which is used for being fixed on the outer wall of the side surface of the elevator car, wherein the free end of the steel wire rope for movement bypasses the top of the supporting pulley and then is connected and fixed with the sliding base, the front end of the swing rod extends to the lower part of the push plate I in the horizontal, the front end of the swing rod is moved out of the area below the push plate I.

Foretell height-variable buffer group for elevator, crawl speed monitoring mechanism including be used for supporting the runner that tests the speed on the elevator wall of a well, vertical guide rail II, vertical guide rail III, locate the baffle that tests the speed on vertical guide rail II, locate the counter weight hammer on vertical guide rail III, locate on the runner that tests the speed and both ends respectively with the speed test wire rope that tests the speed that baffle and counter weight hammer are connected, locate and be used for fixing the push pedal II on car side outer wall, the baffle that tests the speed is equipped with the front end of horizontal support arm and extends to the below of push pedal II on the horizontal direction to when the car drives II striking horizontal support arm front ends of push pedal down, whether record the functioning speed through the runner that tests the speed and.

The height-variable buffer group for the elevator comprises a guide wheel I, a guide wheel II and a supporting pulley, wherein the guide wheel I is close to the movable main buffer end, the axis of the guide wheel I is perpendicular to the horizontal plane, the guide wheel II is arranged on the rope outlet side of the guide wheel I and is perpendicular to the axis of the guide wheel I, the axis of the supporting pulley is perpendicular to the axes of the guide wheel I and the guide wheel II respectively, and the supporting pulley, the guide wheel I and the guide wheel II are fixed pulleys.

In the above height-variable buffer group for an elevator, one end of the sliding guide rail is located at the middle position of the pit corresponding to the car bottom surface buffer area, and the other end of the sliding guide rail extends to the outside of the pit area corresponding to the elevator car bottom surface buffer area.

In the above-described variable height buffer group for an elevator, the fixed sub-buffer is located at a position lateral to the movable main buffer.

The utility model has the advantages that:

because the movable main buffer for calculating the height according to the rated speed of the elevator and the fixed auxiliary buffer for calculating the height according to the crawling speed of the elevator are arranged, the height of the movable main buffer in the two buffers is higher than that of the fixed auxiliary buffer, and only the fixed auxiliary buffer is considered in the depth of the elevator pit, so that the depth of the pit is greatly reduced, the construction cost is saved, and the maintenance and overhaul equipment in the pit is more convenient. The specific working principle is as follows: the movable main buffer corresponds to a rated speed, the fixed auxiliary buffer corresponds to a crawling speed, when the elevator is close to a bottom flat layer, the electrical system reduces the elevator from the rated speed to the crawling speed, at the moment, the crawling speed monitoring mechanism starts to detect whether the elevator is reduced to the crawling speed, if the elevator is in the crawling speed, the movable main buffer is moved out of a pit area corresponding to an elevator car bottom surface buffer area (the elevator bottom surface buffer area corresponds to the main buffer and the auxiliary buffer which are protruded out of the elevator bottom surface), namely the movable main buffer exits from the buffer area, and the elevator is normally flat; if the elevator does not stop at the creep speed, it strikes the fixed secondary buffer at a speed no greater than the creep speed. If the speed is higher than the crawling speed, the movable main buffer does not act, the car impacts the movable main buffer, and the safe operation of the elevator and the safety of personnel in the elevator are guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention (the movable main buffer is located in the buffer area);

fig. 2 is a schematic structural diagram of the present invention (the movable main buffer is moved out of the buffer area);

FIG. 3 is a side view of the movable main buffer moving out of the buffer area;

FIG. 4 is a schematic view of the direction A in FIG. 1 (normal operation);

FIG. 5 is a schematic view of FIG. 1 taken along line B;

fig. 6 is a schematic view of the rocker of fig. 4 in an overspeed state of the elevator.

In the figure: 1. the elevator comprises a pit, a car, a stop block, a fixed auxiliary buffer, a guide seat, a movable main buffer, a sliding guide rail, a compression spring, a guide wheel I, a movable steel wire rope, a guide wheel II, a guide wheel 12, a supporting pulley, a stop block 13, a rotating shaft 14, a vertical guide rail I, a sliding base 16, a swing rod 17, an electromagnet 18, a push plate I, a speed limiter 20, a counterweight hammer 21, a vertical guide rail III, a speed measuring rotating wheel 23, a vertical guide rail II, a speed measuring baffle 25, a horizontal support arm 26, a push plate II, a push plate 28, a torsion spring 29, a speed measuring steel wire rope 30 and a buffer area.

Detailed Description

As shown in fig. 1 to 6, the height-variable buffer group for an elevator includes a buffer body composed of a movable main buffer 6 whose height is calculated from a rated speed of the elevator and a fixed sub-buffer 4 whose height is calculated from a climbing speed of the elevator. The crawling speed of the elevator is less than the rated speed of the elevator.

The bottom of the movable main buffer 6 is provided with a guide seat 5, the guide seat 5 is positioned on a sliding guide rail 7 fixed on the bottom surface of the elevator pit 1, one end of the sliding guide rail 7 is provided with a stop block 3, the other end of the sliding guide rail is provided with a stop block 13, a compression spring 8 is connected between the guide seat 5 and the stop block 13, one side of the guide seat 5, which is connected with the compression spring 8, is additionally connected with a steel wire rope 10 for movement, the tail end of the steel wire rope 10 for movement is connected with a driving mechanism, and the driving mechanism is electrically connected with a crawling speed monitoring mechanism. When the elevator reaches a set distance from the bottom flat layer, the crawling speed monitoring mechanism monitors whether the running speed of the elevator is the crawling speed or not, and sends an instruction to the driving mechanism, and when the running speed of the elevator is the crawling speed, the driving mechanism pulls the moving steel wire 10 rope to drive the movable main buffer 6 to leave the pit area corresponding to the buffer area 30 on the bottom surface of the elevator car. One end of the sliding guide rail 7 is positioned at the middle position of the pit corresponding to the car bottom surface buffer area 30, and the other end of the sliding guide rail extends to the outside of the pit area corresponding to the elevator car bottom surface buffer area 30. The fixed sub-damper 4 is located at a lateral position of the movable main damper 6, avoiding the slide rail 7.

In this embodiment, the driving mechanism includes a supporting pulley 12 for supporting on the elevator shaft wall, a guiding pulley set for guiding the free end of the moving steel wire rope 10 to the supporting pulley 12, a vertical guide rail i 15 disposed on the elevator shaft wall, a sliding base 16 disposed on the vertical guide rail i 15, a swing rod 17 hinged on the sliding base 16 by a rotating shaft 14, a torsion spring 28 sleeved on the rotating shaft 14 and having two ends respectively connected with the sliding base 16 and the swing rod 17, an electromagnet 18 fixed on the sliding base 16, and a pushing plate i 19 for fixing on the outer wall of the side face of the car 2. The free end of the moving steel wire rope 10 bypasses the top of the supporting pulley 12 and then is fixedly connected with the sliding base 16, the front end of the swing rod 17 extends to the position below the push plate I19 in the horizontal direction, the side face of the rear part of the swing rod 17 is in contact with the end part of the ejector rod of the electromagnet 18, so that when the ejector rod of the electromagnet 18 is ejected, the ejector rod pushes the swing rod 17 to rotate around the rotating shaft 14 by a set angle, and the front end of the swing rod 17 moves out of the area below the push plate I19. The direction wheelset is including the leading wheel I9 that is close to movable main buffer end and axial lead perpendicular to horizontal plane, locate leading wheel I9 play rope side and with leading wheel I9 axial lead vertically leading wheel II 11, the axial lead of support pulley 12 is perpendicular respectively with the axial lead of leading wheel I9 and leading wheel II 11, support pulley 12, leading wheel I9 and leading wheel II 11 are the fixed pulley.

Crawling speed monitoring mechanism including being used for supporting runner 23 that tests the speed on the elevator wall of a well, vertical guide rail II 24, vertical guide rail III 22, locate the baffle 25 that tests the speed on vertical guide rail II 24, locate the counter weight hammer 21 on vertical guide rail III 22, locate on the runner 23 that tests the speed and both ends respectively with the speed test baffle 25 and counter weight hammer 21 be connected 29, locate and be used for fixing push pedal II 27 on the outer wall of car side. The baffle 25 that tests the speed is equipped with horizontal support arm 26 and the front end of horizontal support arm 26 extends to the below of push pedal II 27 in the horizontal direction to when car 2 drives down push pedal II 27 striking horizontal support arm 26 front end, whether survey through runner 23 that tests the speed and drop to the speed of crawling.

The action process is as follows:

when the elevator runs to the bottom floor at the rated speed (about 50-500mm from the bottom floor level), the floor is leveled at the creeping speed. At this moment, the push plate II 27 fixed on the car pushes the speed measuring baffle 25, the speed measuring baffle 25 moves vertically downwards on the vertical guide rail II 24, the counterweight hammer 21 moves vertically upwards on the vertical guide rail III 22, and the speed measuring baffle 25 drives the speed measuring rotating wheel 23 to rotate through the speed measuring steel wire rope 29 when moving downwards to start measuring the speed. Meanwhile, a push plate I19 fixed on the car pushes a swing rod 17 of the driving mechanism to drive the swing rod 17 and a sliding base 16 thereof to move vertically downwards along a vertical guide rail I15. The movable wire rope 10 is driven by the sliding base 16, and the guide base 5 at the bottom of the movable main buffer 6 is pulled by the guide wheel set to move along the sliding guide rail 7 to the outside of the pit area corresponding to the elevator car bottom surface buffer area 30, so that the movable main buffer 6 is separated from the pit area corresponding to the elevator car bottom surface buffer area 30 and does not participate in buffering, and the fixed auxiliary buffer 4 can participate in buffering.

When the elevator runs upwards from the bottom flat layer state, the movable main buffer 6 resets along the sliding guide rail under the action of the compression spring 8, and meanwhile, the movable steel wire rope 10 drives the sliding base 16 and the swing rod 17 on the sliding base to reset. The counter weight hammer 21 of the crawling speed monitoring mechanism moves downwards along the vertical guide rail III 22 under the action of gravity, and the speed measuring baffle 25 is pulled to reset through the speed measuring steel wire rope 29.

When a push plate II 27 on the car collides with the speed-measuring baffle 25, the speed-measuring rotating wheel 23 sends an overspeed electric signal to trigger the electromagnet 18 to move, an ejector rod of the electromagnet 18 pops up to enable the oscillating bar 17 to rotate around the rotating shaft 14 for a set angle, the front end of the oscillating bar 17 moves out of the area below the push plate I19, the elevator continues to move downwards, the push plate I19 cannot push the oscillating bar 17, the sliding base 16 of the oscillating bar cannot be driven to move downwards, the driving mechanism does not move, the movable main buffer 6 is still in the pit area corresponding to the car bottom surface buffer area 30, namely the movable main buffer 6 does not leave the buffer area, participates in buffering the car 2, and the car is protected.

When the speed governor 20 of the elevator detects that the running speed of the elevator exceeds the rated speed, the safety gear is triggered to stop the elevator.

Claims (6)

1. A height-variable buffer group for an elevator, comprising a buffer body, characterized in that: the buffer body comprises a movable main buffer and a fixed auxiliary buffer, wherein the height of the movable main buffer is calculated according to the rated speed of the elevator, the height of the fixed auxiliary buffer is calculated according to the crawling speed of the elevator, the crawling speed of the elevator is smaller than the rated speed of the elevator, a guide seat is arranged at the bottom of the movable main buffer and is positioned on a sliding guide rail fixed on the bottom surface of an elevator pit, one end of the sliding guide rail is provided with a stop block, the other end of the sliding guide rail is provided with a stop block, a compression spring is connected between the guide seat and the stop block, one side of the guide seat, which is connected with the compression spring, is additionally connected with a steel wire rope for movement, the tail end of the steel.

2. The height-variable buffer group for an elevator according to claim 1, characterized in that: the driving mechanism comprises a supporting pulley, a guide wheel set, a vertical guide rail I, a sliding base, a swing rod, a torsion spring, an electromagnet and a push plate I, wherein the supporting pulley is used for supporting the elevator shaft wall, the free end of the movable steel wire rope is led to the supporting pulley, the vertical guide rail I is arranged on the elevator shaft wall, the sliding base is arranged on the vertical guide rail I, the swing rod is hinged to the sliding base through a rotating shaft, the torsion spring is sleeved on the rotating shaft, the two ends of the torsion spring are respectively connected with the sliding base and the swing rod, the electromagnet is fixed on the sliding base, the push plate I is used for fixing the outer wall of the side face of the car, the free end of the movable steel wire rope is connected and fixed with the sliding base.

3. The height-variable buffer group for an elevator according to claim 1, characterized in that: crawling speed monitoring mechanism including be used for supporting runner, vertical guide rail II, the vertical guide rail III of testing the speed on the elevator wall of a well, locate the baffle that tests the speed on the vertical guide rail II, locate the counter weight hammer on the vertical guide rail III, locate on the runner that tests the speed and both ends respectively with the steel wire rope that tests the speed that baffle and counter weight hammer are connected, locate and be used for fixing push pedal II on the outer wall of car side, the front end that the baffle was equipped with horizontal support arm and horizontal support arm of testing the speed extends to the below of push pedal II on the horizontal direction.

4. The height-variable buffer group for an elevator according to claim 2, characterized in that: the direction wheelset is including being close to movable main buffer end and axial lead perpendicular to horizontal guide pulley I, locating I play rope side of guide pulley and with I axial lead vertically guide pulley II of guide pulley, the axial lead of support pulley is perpendicular respectively with the axial lead of guide pulley I and guide pulley II, support pulley, guide pulley I and guide pulley II are the fixed pulley.

5. The height-variable buffer group for an elevator according to claim 1, characterized in that: one end of the sliding guide rail is located in the middle of the pit corresponding to the buffering area on the bottom surface of the elevator car, and the other end of the sliding guide rail extends to the outside of the pit corresponding to the buffering area on the bottom surface of the elevator car.

6. The height-variable buffer group for an elevator according to claim 1, characterized in that: the fixed auxiliary buffer is positioned at the side position of the movable main buffer.

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