Elevator speed limiter easy to maintain

Abstract

The elevator speed governor easy to maintain comprises a shell, a rope wheel is movably arranged in the shell, a rope clamping arm and a clamping block are arranged on one side of the rope wheel, vertical bases are fixed to the two sides of the shell respectively, sliding grooves are formed in the surfaces of the two vertical bases respectively, a lifting base is arranged between the two vertical bases, and the lifting base is connected with the rope wheel. The two ends of the lifting base are slidably connected with the two sliding grooves correspondingly, an arc-surface base is slidably arranged at the bottom of the lifting base and located over the rope wheel, a friction plate is arranged at the bottom of the arc-surface base, and a plurality of pairs of threaded holes are formed in the top of the arc-surface base at intervals. According to the rope pressing block, the problem that in the prior art, when a worker replaces the rope pressing block, it is very troublesome to disassemble and assemble components connected with the rope pressing block at the same time is solved.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to an elevator speed limiter which is easy to maintain. Background Art

[0002] The elevator speed limiting protection devices widely used at present all use the speed limiter to drive the brake device safety clamp to operate, so that the elevator slows down and stops. The speed limiter includes a sheave, on which a steel wire rope connected to the elevator car is hung, so that the speed limiter sheave can rotate at a speed corresponding to the speed of the car. The steel wire rope on the sheave is connected to the safety clamp. When the rotation speed of the speed limiter sheave exceeds a certain speed, the centrifugal block on the speed limiter sheave rotates with the help of the centrifugal force generated by the rotation of the sheave, driving the pressure claw and ratchet on the sheave to operate, so that the rope pressing block in the rope pressing component on the speed limiter presses the steel wire rope, the steel wire rope is braked, and the speed limiter sheave stops rotating, thereby using the tensioned steel wire rope to pull the safety clamp to operate and stop the elevator.

[0003] Since elevators are used frequently, the rope-pressing block used for braking wears out quickly when used frequently. In order to ensure a good braking effect, workers need to replace it frequently. However, in the prior art, when workers replace the rope-pressing block, they need to disassemble and assemble the components connected to it at the same time, which is very troublesome.

[0004] Therefore, it is necessary to provide a new elevator speed limiter that is easy to maintain to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an elevator speed limiter which is easy to maintain, and solves the problem in the prior art that when the staff replaces the rope pressure block, they need to disassemble and assemble the components connected to it at the same time, which is very troublesome.

[0006] The elevator speed governor provided by the utility model is easy to maintain and comprises a housing, a rope wheel is movably arranged inside the housing, a rope clamping arm and a clamping block are arranged on one side of the rope wheel, and stands are fixed on both sides of the housing, and slide grooves are opened on the surfaces of the two stands;

[0007] A lifting seat is arranged between the two upright seats, and the two ends of the lifting seat are respectively slidably connected with the two slide grooves. An arc seat is slidably arranged at the bottom of the lifting seat, and the arc seat is located directly above the rope wheel, and a friction plate is arranged at the bottom of the arc seat.

[0008] In a preferred embodiment, a plurality of pairs of threaded holes are spaced apart on the top of the arc surface seat, and the top of the arc surface seat is connected to the lifting seat by high-strength screws.

[0009] In a preferred embodiment, threaded rods are movably arranged inside the two slide grooves, the threaded rods penetrate the lifting seat, and the threaded rods are threadedly connected to the lifting seat.

[0010] In a preferred embodiment, the tops of the two threaded rods extend out of the stand and are mounted with a first bevel gear, and one side of the two stands is fixed with a limited seat;

[0011] A rotating shaft is movably arranged between the two limit seats through a bearing, and two second bevel gears are installed on the rotating shaft at intervals, and the two second bevel gears are respectively meshed with the two first bevel gears;

[0012] A motor is arranged on one side of the limiting seat, and an output end of the motor is connected to the rotating shaft through a coupling.

[0013] In a preferred embodiment, the clamp block is provided with a moving column having a baffle fixed on the top, the moving column is provided with a spring, one end of the spring is fixed on the baffle, and the other end of the spring is fixed on the surface of the clamp block;

[0014] A pressure sensor is installed at the contact position between the baffle plate and the top of the rope clamping arm.

[0015] In a preferred embodiment, a battery and a controller are installed on one side of the housing.

[0016] Beneficial effects of the utility model:

[0017] When the device is used, when the elevator car descends at an overspeed, the speed clamp of the sheave of the speed limiter is affected by the centrifugal force, triggering the lock tongue so that the pawl is moved and stuck on the ratchet. At this time, the ratchet is driven to pull the rope clamping arm to move. When the rope clamping arm starts to move, its top will apply pressure to the pressure sensor at the baffle. The pressure sensor transmits an electrical signal to the controller, and the controller controls the motor to start quickly so that the lifting seat moves downward quickly. At this time, the arc seat at the bottom of the lifting seat will quickly contact the rope sheave, and the friction between them will brake the wire rope on the rope sheave. By setting an additional braking structure, the rope pressing block will not participate in braking, reducing its maintenance frequency. Braking can be completed by the friction between the arc seat and the wire rope, and when the additional braking structure fails, the rope pressing block still has a braking effect.

[0018] When the cambered seat needs to be repaired or replaced, it is only necessary to unscrew the high-strength screws and then pull out the cambered seat, making maintenance simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional view of the main structure of the elevator speed governor that is easy to maintain provided by the utility model;

[0020] Figure 2 A schematic diagram of the structure of the cambered seat provided by the utility model;

[0021] Figure 3 The main structural plan view of the easy-to-maintain elevator speed governor provided by the utility model.

[0022] Numbers in the figure: 1, housing; 2, rope pulley; 3, rope clamping arm; 4, clamping block; 5, stand; 6, slide groove; 7, lifting seat; 8, arc seat; 9, threaded hole; 10, high-strength screw; 11, threaded rod; 12, first bevel gear; 13, limit seat; 14, rotating shaft; 15, second bevel gear; 16, motor; 17, moving column; 18, baffle; 19, spring; 20, controller; 21, battery. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Please refer to Figure 1 , Figure 2 as well as Figure 3 ,in Figure 1 A three-dimensional view of the main structure of the elevator speed governor that is easy to maintain provided by the utility model; Figure 2 A schematic diagram of the structure of the cambered seat provided by the utility model; Figure 3 The main structural plan view of the easy-to-maintain elevator speed governor provided by the utility model.

[0025] In the specific implementation process, Figure 1-Figure 3 As shown, it includes a shell 1, a rope wheel 2 is movably arranged inside the shell 1, a rope clamping arm 3 and a clamping block 4 are arranged on one side of the rope wheel 2, and it is characterized in that a stand 5 is fixed on both sides of the shell 1, and a slide groove 6 is opened on the surface of the two stands 5, a lifting seat 7 is arranged between the two stands 5, and the two ends of the lifting seat 7 are respectively slidably connected with the two slide grooves 6, and a curved seat 8 is slidably arranged at the bottom of the lifting seat 7, and the curved seat 8 is located directly above the rope wheel 2, and a friction plate is arranged at the bottom of the curved seat 8. When the speed limiter is in use, the curved seat 8 at the bottom of the lifting seat 7 will quickly contact the rope wheel 2, and the steel wire rope on the rope wheel 2 is braked by the friction force therebetween.

[0026] A plurality of pairs of threaded holes 9 are spaced apart at the top of the arc seat 8. The top of the arc seat 8 is connected to the lifting seat 7 by high-strength screws 10. When the arc seat 8 needs to be repaired or replaced, it is only necessary to unscrew the high-strength screws 10 and then pull out the arc seat 8. Maintenance is simple and convenient.

[0027] The clamp block 4 is provided with a moving column 17 having a baffle 18 fixed on the top, and a spring 19 is provided on the moving column 17, one end of the spring 19 is fixed on the baffle 18, and the other end of the spring 19 is fixed on the surface of the clamp block 4, and a pressure sensor is installed at the contact point between the baffle 18 and the top of the rope clamp arm 3. The pressure sensor specifically adopts a contact pressure sensor. When the device is used, when the elevator car descends at an overspeed, the speed limiter rope wheel 2 rotates the clamp block, and at this time, under the influence of centrifugal force, the lock tongue is triggered so that the pawl is moved and stuck on the ratchet. At this time, the ratchet is driven to pull the rope clamp arm 3 to move, and the clamp When the rope arm 3 just starts to move, its top will apply pressure to the pressure sensor at the baffle 18, and the pressure sensor transmits the electrical signal to the controller 20, which controls the motor 16 to start quickly. A battery 21 and a controller 20 are installed on one side of the shell 1. The controller 20 preferably adopts the Sanling FX5U series, which has a high system bus speed and can be expanded to 16 intelligent expansion modules at most. It has a built-in 2-input 1-output analog function, a built-in Ethernet interface and a 4-axis 200kHz high-speed positioning function. The battery 21 is used to independently power the electrical components mentioned in this device.

[0028] A threaded rod 11 is movably provided inside the two slide grooves 6, and the threaded rod 11 passes through the lifting seat 7, and the threaded rod 11 is threadedly connected to the lifting seat 7. The tops of the two threaded rods 11 extend out of the standing seat 5 and are installed with a first bevel gear 12. A limited seat 13 is fixed on one side of the two standing seats 5. A rotating shaft 14 is movably provided between the two limited seats 13 through a bearing. Two second bevel gears 15 are installed on the rotating shaft 14 at intervals. The two second bevel gears 15 are respectively meshed with the two first bevel gears 12. A motor 16 is provided on one side of the limited seat 13. The output end of the motor 16 is connected to the rotating shaft 14 through a coupling. When the motor 16 rotates, it will drive the rotating shaft 14 to rotate. Under the transmission action of the two first bevel gears 12 and the two second bevel gears 15, the two threaded rods 11 rotate in the same direction at the same time, so that the lifting seat 7 moves downward rapidly. At this time, the arc seat 8 at the bottom of the lifting seat 7 will quickly contact the rope wheel 2.

[0029] Working principle of the utility model: when the device is used, when the elevator car descends at an overspeed, the speed clamp of the rope wheel 2 of the speed limiter is affected by the centrifugal force, triggering the lock tongue so that the pawl is moved and stuck on the ratchet wheel. At this time, the ratchet wheel is driven to pull the rope clamp arm 3 to move, and when the rope clamp arm 3 starts to move, its top will apply pressure to the pressure sensor at the baffle 18, and the pressure sensor transmits the electrical signal to the controller 20, and the controller 20 controls the motor 16 to start quickly;

[0030] When the motor 16 rotates, it drives the rotating shaft 14 to rotate. Under the transmission action of the two first bevel gears 12 and the two second bevel gears 15, the two threaded rods 11 rotate in the same direction at the same time, so that the lifting seat 7 moves downward rapidly. At this time, the arc seat 8 at the bottom of the lifting seat 7 will quickly contact the rope wheel 2, and the friction between them will brake the wire rope on the rope wheel 2.

[0031] When the arc surface seat 8 needs to be repaired or replaced, it is only necessary to unscrew the high-strength screw 10 and then pull out the arc surface seat 8, so the maintenance is simple and convenient.

[0032] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An elevator speed governor that is easy to maintain, comprising a housing (1), a rope wheel (2) movably arranged inside the housing (1), a rope clamping arm (3) and a clamping block (4) arranged on one side of the rope wheel (2), characterized in that: Stands (5) are fixed on both sides of the housing (1), and sliding grooves (6) are provided on the surfaces of the two stands (5); A lifting seat (7) is arranged between the two upright seats (5), and the two ends of the lifting seat (7) are respectively slidably connected to the two slide grooves (6). An arc seat (8) is slidably arranged at the bottom of the lifting seat (7), and the arc seat (8) is located directly above the rope wheel (2), and a friction plate is arranged at the bottom of the arc seat (8).

2. The easy-to-maintain elevator speed governor according to claim 1, characterized in that: A plurality of pairs of threaded holes (9) are spaced apart at the top of the arc surface seat (8), and the top of the arc surface seat (8) is connected to the lifting seat (7) via high-strength screws (10).

3. The easy-to-maintain elevator speed governor according to claim 2, characterized in that: A threaded rod (11) is movably arranged inside the two slide grooves (6); the threaded rod (11) penetrates the lifting seat (7), and the threaded rod (11) is threadedly connected to the lifting seat (7).

4. The easy-to-maintain elevator speed governor according to claim 3, characterized in that: The tops of the two threaded rods (11) extend out of the stand (5) and are provided with a first bevel gear (12); and a limiting seat (13) is fixed on one side of the two stand (5); A rotating shaft (14) is movably arranged between the two limiting seats (13) via a bearing, and two second bevel gears (15) are installed on the rotating shaft (14) at intervals, and the two second bevel gears (15) are respectively meshed with the two first bevel gears (12); A motor (16) is provided on one side of the limiting seat (13), and an output end of the motor (16) is connected to the rotating shaft (14) via a coupling.

5. The easy-to-maintain elevator speed governor according to claim 4, characterized in that: The clamping block (4) is provided with a movable column (17) penetrating therethrough, a baffle (18) being fixed on the top thereof, a spring (19) being sleeved on the movable column (17), one end of the spring (19) being fixed on the baffle (18), and the other end of the spring (19) being fixed on the surface of the clamping block (4); A pressure sensor is installed at the contact point between the baffle plate (18) and the top of the rope clamping arm (3).

6. The easy-to-maintain elevator speed governor according to claim 5, characterized in that: A storage battery (21) and a controller (20) are installed on one side of the housing (1).

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