阅读说明：本技术 一种电梯限速器 (Elevator speed limiter ) 是由 高梦迪 王庆阳 邢玲玲 楚庆庆 刘从虎 何康 于 2019-11-22 设计创作，主要内容包括：本发明涉及电梯设备技术领域,具体涉及一种电梯限速器,它包括限速器底座,该限速器底座上设置有限速器外壳；所述限速器外壳包括水平底板,水平底板上两侧设置有两块侧板形成U形机架,两个侧板上对应安装有轴承,两个轴承之间设有转轴,转轴上安装有限速器轮盘,限速器轮盘的上半部的轮槽中缠绕钢丝绳；所述转轴上通过轴承套设有棘轮,棘轮设置在限速器轮盘一侧,棘轮可绕轴转动；本发明采用增加钢丝绳自动提升装置,以使钢丝绳和限速器轮盘自动分离,从而无需工作人员进入井道等一系列繁琐操作,避免了工作人员跌落井道,造成人员伤亡；以及设置有旋转编码器,通过旋转编码器实时反馈检测结果,无需其他专业检测工具,方便、快捷等优点。(The invention relates to the technical field of elevator equipment, in particular to an elevator speed limiter, which comprises a speed limiter base, wherein a speed limiter shell is arranged on the speed limiter base; the speed limiter shell comprises a horizontal bottom plate, two side plates are arranged on two sides of the horizontal bottom plate to form a U-shaped frame, bearings are correspondingly arranged on the two side plates, a rotating shaft is arranged between the two bearings, a speed limiter wheel disc is arranged on the rotating shaft, and a steel wire rope is wound in a wheel groove in the upper half part of the speed limiter wheel disc; the rotating shaft is sleeved with a ratchet wheel through a bearing, the ratchet wheel is arranged on one side of the wheel disc of the speed limiter, and the ratchet wheel can rotate around a shaft; according to the invention, the automatic lifting device of the steel wire rope is added to automatically separate the steel wire rope from the wheel disc of the speed limiter, so that a series of complicated operations such as entering of workers into a hoistway and the like are not needed, and the workers are prevented from falling off the hoistway to cause casualties; and the rotary encoder is arranged, so that the detection result is fed back in real time through the rotary encoder, other special detection tools are not needed, and the detection method has the advantages of convenience, quickness and the like.)

1. An elevator speed limiter, its characterized in that: the speed limiter comprises a speed limiter base, wherein a speed limiter shell is arranged on the speed limiter base; the speed limiter shell comprises a horizontal bottom plate, two side plates are arranged on two sides of the horizontal bottom plate to form a U-shaped frame, bearings are correspondingly arranged on the two side plates, a rotating shaft is arranged between the two bearings, a speed limiter wheel disc is arranged on the rotating shaft, and a steel wire rope is wound in a wheel groove in the upper half part of the speed limiter wheel disc; the rotating shaft is sleeved with a ratchet wheel through a bearing, the ratchet wheel is arranged on one side of the wheel disc of the speed limiter, and the ratchet wheel can rotate around a shaft; the rotating shaft is also provided with a rotary encoder; a motor supporting plate is arranged on a side plate on the same side of the speed limiter shell and the ratchet wheel, and a detection motor is arranged on the motor supporting plate; the detection device is provided with an electromagnetic clutch, one end of the electromagnetic clutch is connected with the output end of the detection motor, and the other end of the electromagnetic clutch is connected with the rotating shaft; a pin shaft is arranged at the eccentric position of the ratchet wheel, one end of a connecting rod is connected with the ratchet wheel through the pin shaft, the other end of the connecting rod is connected with a rope pressing mechanism, and the rope pressing mechanism and a speed limiter wheel disc form clamping and braking on the steel wire rope; a snap ring is arranged at the outer end of the connecting rod, and a buffer spring is arranged on the snap ring; the rope pressing mechanism is arranged at the right ends of the tops of the two side plates of the speed limiter shell through fixing bolts; the speed limiter wheel disc is provided with two centrifugal blocks, one ends of the two centrifugal blocks are hinged with the linkage pull rod, the other ends of the two centrifugal blocks are hinged with the return pull rod, an adjusting spring is installed between the linkage pull rod and the return pull rod, the adjusting spring is sleeved on an adjusting screw rod, the adjusting screw rod is screwed in a screw hole of an adjusting plate, and the adjusting plate is arranged on the side face of the speed limiter wheel disc;

a vertical guide rail plate is arranged on the left side of a horizontal bottom plate of the speed limiter shell, the vertical guide rail plate is rectangular, a horizontal mounting plate is arranged at the top end of the vertical guide rail plate, the horizontal mounting plate is rectangular, a stepping motor is arranged on the horizontal mounting plate, a ball screw is arranged at the output end of the stepping motor, and a moving table is arranged on the ball screw; the left side of the mobile station is provided with a U-shaped guide groove which is matched with the vertical guide rail plate; the middle part of the top surface of the mobile station is provided with a screw hole matched with the ball screw; a raised head is arranged on the inner side surface of the mobile station, a U-shaped groove hole is formed in the right side surface of the raised head, a shaft lever is arranged between the inner walls of the U-shaped groove holes, and a steel wire rope clamping device is hinged to the shaft lever; the steel wire rope clamping device comprises a wedge block, a wedge block pull rod is hinged to the wedge block, and the other end of the wedge block pull rod is hinged to the shaft rod.

2. An elevator governor in accordance with claim 1, wherein: the detection motor is fixed on the rectangular motor supporting plate through a bolt.

3. An elevator governor in accordance with claim 1, wherein: the upper portion of the inner side of the vertical guide rail plate is provided with a square guide base, the middle of the square guide base is provided with a through hole, the through hole is circular, the size of the through hole is slightly larger than the diameter of the output end of the stepping motor, and the output end of the stepping motor penetrates through the through hole to the outside.

4. An elevator governor in accordance with claim 1, wherein: and one end of the electromagnetic clutch is connected with the main shaft of the speed limiter wheel disc, and the other end of the electromagnetic clutch is connected with the detection motor.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of elevator equipment, in particular to an elevator speed limiter.

[ background of the invention ]

Along with the development of economy and the acceleration of urbanized construction in China, the elevators are more and more widely used, and people pay more and more attention to the safety problem of elevator riding.

At present, the holding capacity of elevators in China is the first in the world, and along with the safety problem of the elevators, people pay more and more attention to the elevators. The speed limiter is an important part for ensuring the safe operation of the elevator, and the national quality control bureau also makes clear rules for the verification of the speed limiter of the elevator. The elevator speed limiter is a key part for ensuring the safe operation of the elevator, the elevator speed limiter is verified once every two years according to the regulation of the State quality control Bureau, and the elevator used for more than 15 years needs to be verified once every year.

The traditional checking of the elevator speed limiter is very complicated, and the checking is generally carried out according to the following steps that (1) professional elevator inspectors and maintenance personnel enter an elevator shaft from the top floor in a matching way, and the elevator runs downwards for about 0.5 m during maintenance on the car roof; (2) clamping a speed limiter rope on the non-car side through a special steel wire rope lifting hook, and carrying out maintenance inching to move the car upwards for 0.3 m so as to enable a steel wire rope on a speed limiter wheel to be in a loose state; (3) elevator inspection personnel and maintenance personnel leave the hoistway and enter the elevator machine room, and the outer cover of the speed limiter is detached; (4) checking through a special speed limiter check meter; (5) and after the verification is finished, installing a speed limiter outer cover, entering a well, and taking down the speed limiter rope lifting device.

The traditional speed limiter verification has the following defects: first, it is time consuming and labor intensive. At least two experienced elevator professionals are required to complete the verification of one speed limiter, and at least 30 minutes are required. Secondly, the speed limiter rope on the non-car side needs to be lifted in the elevator shaft way in the checking process, the speed limiter rope needs to enter the shaft again to recover after the checking is finished, and elevator workers have the danger of falling off the shaft. 3. Special checking instruments are needed, and the cost is high.

[ summary of the invention ]

The invention aims to provide an elevator speed limiter aiming at the defects and shortcomings of the prior art, and the elevator speed limiter has the characteristics of convenience in maintenance, simplicity in operation and capability of saving a large amount of manpower and material resources.

The invention relates to an elevator speed limiter, which is characterized in that: the speed limiter comprises a speed limiter base, wherein a speed limiter shell is arranged on the speed limiter base; the speed limiter shell comprises a horizontal bottom plate, two side plates are arranged on two sides of the horizontal bottom plate to form a U-shaped frame, bearings are correspondingly arranged on the two side plates, a rotating shaft is arranged between the two bearings, a speed limiter wheel disc is arranged on the rotating shaft, and a steel wire rope is wound in a wheel groove in the upper half part of the speed limiter wheel disc; the rotating shaft is sleeved with a ratchet wheel through a bearing, the ratchet wheel is arranged on one side of the wheel disc of the speed limiter, and the ratchet wheel can rotate around a shaft; the rotating shaft is also provided with a rotary encoder; a motor supporting plate is arranged on a side plate on the same side of the speed limiter shell and the ratchet wheel, and a detection motor is arranged on the motor supporting plate; the detection device is provided with an electromagnetic clutch, one end of the electromagnetic clutch is connected with the output end of the detection motor, and the other end of the electromagnetic clutch is connected with the rotating shaft; a pin shaft is arranged at the eccentric position of the ratchet wheel, one end of a connecting rod is connected with the ratchet wheel through the pin shaft, the other end of the connecting rod is connected with a rope pressing mechanism, and the rope pressing mechanism and a speed limiter wheel disc form clamping and braking on the steel wire rope; a snap ring is arranged at the outer end of the connecting rod, and a buffer spring is arranged on the snap ring; the rope pressing mechanism is arranged at the right ends of the tops of the two side plates of the speed limiter shell through fixing bolts; the speed governor wheel disc is provided with two centrifugal blocks, one ends of the two centrifugal blocks are hinged with the linkage pull rod, the other ends of the two centrifugal blocks are hinged with the return pull rod, an adjusting spring is installed between the linkage pull rod and the return pull rod, the adjusting spring is sleeved on an adjusting nut, the adjusting nut is screwed in a screw hole of an adjusting plate, and the adjusting plate is arranged on the side face of the speed governor wheel disc;

a vertical guide rail plate is arranged on the left side of a horizontal bottom plate of the speed limiter shell, the vertical guide rail plate is rectangular, a horizontal mounting plate is arranged at the top end of the vertical guide rail plate, the horizontal mounting plate is rectangular, a stepping motor is arranged on the horizontal mounting plate, a ball screw is arranged at the output end of the stepping motor, and a moving table is arranged on the ball screw; the left side of the mobile station is provided with a U-shaped guide groove which is matched with the vertical guide rail plate; the middle part of the top surface of the mobile station is provided with a screw hole matched with the ball screw; a raised head is arranged on the inner side surface of the mobile station, a U-shaped groove hole is formed in the right side surface of the raised head, a shaft lever is arranged between the inner walls of the U-shaped groove holes, and a steel wire rope clamping device is hinged to the shaft lever; the steel wire rope clamping device comprises a wedge block, a wedge block pull rod is hinged to the wedge block, and the other end of the wedge block pull rod is hinged to the shaft rod.

Further, the detection motor is fixed on the rectangular motor supporting plate through bolts.

Further, a square guide base is arranged on the upper portion of the inner side of the vertical guide rail plate, a through hole is formed in the middle of the square guide base and is circular, the size of the through hole is slightly larger than the diameter of the output end of the stepping motor, and the output end of the stepping motor penetrates through the through hole to the outside.

Furthermore, the speed limiter wheel disc main shaft at one end of the electromagnetic clutch is connected, and the other end of the electromagnetic clutch is connected with the detection motor.

After adopting the structure, the invention has the beneficial effects that: according to the elevator speed limiter, the automatic lifting device of the steel wire rope is additionally arranged, so that the steel wire rope is automatically separated from the wheel disc of the speed limiter, a series of complicated operations such as entering of workers into a hoistway and the like are not needed, time is saved, and the condition that the workers fall down the hoistway to cause casualties is avoided; and the rotary encoder is arranged, the detection motor is controlled to accelerate the main shaft of the speed limiter through the measurement and control unit, the detection result is fed back in real time through the rotary encoder, other professional detection tools are not needed, and the device has the advantages of convenience, rapidness and the like.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, and are not to be considered limiting of the invention, in which:

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a partial schematic view of the governor rope of the present invention being pinched and lifted off the governor sheave;

fig. 3 is a partially schematic illustration of the governor rope and governor sheave of the present invention without separation;

fig. 4 is a partial structural view of the steel cord of the present invention when clamped;

FIG. 5 is a schematic view of the construction of the present invention with the wire rope lifted;

fig. 6 is a schematic top view of the present invention.

Description of reference numerals:

1. a centrifugal block; 2. a speed limiting wheel disc; 3. a wire rope; 4. a ratchet wheel; 5. adjusting the spring; 6. adjusting the nut; 7. a pawl; 8. a connecting rod; 9. a rope pressing mechanism; 10. a buffer spring; 11. a snap ring; 12. a fixing bolt; 13. a governor housing; 14. an electromagnetic clutch; 15. detecting a motor; 16. a bolt; 17. a speed limiter base; 18. a wire rope clamping device; 19. a mobile station; 20. a ball screw; 21. a stepping motor; 22. a wedge pull rod; 23. a raised head; 24. a wedge block; 25. a shaft lever; 26. and a square guide base.

[ detailed description ] embodiments

The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.

As shown in fig. 1 to 6, the elevator speed limiter according to the embodiment includes a centrifugal block 1, a speed limiter wheel disc 2, a steel wire rope 3, a ratchet 4, an adjusting spring 5, an adjusting nut 6, a pawl 7, a connecting rod 8, a rope pressing mechanism 9, a buffer spring 10, a snap ring 11, a fixing bolt 12, a speed limiter housing 13, an electromagnetic clutch 14, a detection motor 15, a bolt 16, a speed limiter base 17, a steel wire rope clamping device 18, a moving table 19, a ball screw 20, a stepping motor 21, a wedge pull rod 22, a raised head 23, a wedge block 24, a shaft rod 25, and a square guide base 26; a speed governor housing 13 is arranged on the speed governor base 17; the speed limiter shell 13 comprises a horizontal bottom plate, two side plates are arranged on two sides of the horizontal bottom plate to form a U-shaped frame, bearings are correspondingly arranged on the two side plates, a rotating shaft is arranged between the two bearings, a speed limiter wheel disc 2 is arranged on the rotating shaft, and a steel wire rope 3 is wound in a wheel groove in the upper half part of the speed limiter wheel disc 2;

the rotating shaft is sleeved with a ratchet wheel 4 through a bearing, the ratchet wheel 4 is arranged on one side of the speed limiter wheel disc 2, and the ratchet wheel 4 can rotate around a shaft; the rotating shaft is also provided with a rotary encoder; a motor supporting plate is arranged on a side plate on the same side of the speed limiter shell 13 as the ratchet wheel 4, a detection motor 15 is arranged on the motor supporting plate, an electromagnetic clutch 14 is arranged at the output end of the detection motor 15, and the output end of the detection motor 15 is connected with one end of a rotating shaft;

a pin shaft is arranged at the eccentric position of the ratchet wheel 4, one end of a connecting rod 8 is connected with the ratchet wheel 4 through the pin shaft, the other end of the ratchet wheel 4 is connected with a rope pressing mechanism 9, and the rope pressing mechanism 9 and the speed limiter wheel disc 2 together clamp and brake the steel wire rope 3; a snap ring 11 is arranged at the outer end of the connecting rod 8, a buffer spring 10 is arranged on the snap ring 11, and a rope pressing mechanism 9 is arranged at the right end of the top of two side plates of a speed limiter shell 13 through a fixing bolt 12;

the speed governor wheel disc 2 is provided with two centrifugal blocks 1, one ends of the two centrifugal blocks 1 are hinged with a linkage pull rod, the other ends of the two centrifugal blocks 1 are hinged with a return pull rod, an adjusting spring 5 is arranged between the linkage pull rod and the return pull rod, the adjusting spring 5 is sleeved on an adjusting nut 6, the adjusting nut 6 is screwed in a screw hole of an adjusting plate, and the adjusting plate is arranged on the side surface of the speed governor wheel disc 2;

a vertical guide rail plate is arranged on the left side of a horizontal bottom plate of the speed limiter shell 13, the vertical guide rail plate is rectangular, a horizontal mounting plate is arranged at the top end of the vertical guide rail plate, the horizontal mounting plate is rectangular, a stepping motor 21 is arranged on the horizontal mounting plate, a ball screw 20 is arranged at the output end of the stepping motor 21, and a moving table 19 is arranged on the ball screw 20; a U-shaped guide groove is arranged on the left side of the mobile station 19 and matched with the vertical guide rail plate; the middle part of the top surface of the mobile station 19 is provided with a screw hole matched with the ball screw 20; a raised head 23 is arranged on the inner side surface of the mobile station 19, a U-shaped groove hole is formed in the right side surface of the raised head 23, a shaft rod 25 is arranged between the inner walls of the U-shaped groove holes, and a steel wire rope clamping device 18 is hinged to the shaft rod 25; the wire rope clamping device 18 comprises a wedge block 24, a wedge block pull rod 22 is hinged on the wedge block 24, and the other end of the wedge block pull rod 22 is hinged on a shaft rod 25.

Further, the detection motor 15 is fixed to a rectangular motor support plate by a bolt 16.

Further, a square guide base 26 is arranged on the upper portion of the inner side of the vertical guide rail plate, a through hole is formed in the middle of the square guide base 26, the through hole is circular, the size of the through hole is slightly larger than the diameter of the output end of the stepping motor 21, and the output end of the stepping motor 21 penetrates through the through hole to the outside.

Further, one end of the electromagnetic clutch 14 is connected with the main shaft of the speed limiter wheel disc 2, and the other end of the electromagnetic clutch 14 is connected with the detection motor 15.

The working principle of the invention is as follows:

in this design, overspeed governor shell 13 includes both sides board and horizontal bottom plate, "U" type frame that both sides board and horizontal bottom plate constitute. Bearings are respectively arranged on the two side plates and used for supporting the rotating shaft; a speed limiter wheel disc 2 is fixedly arranged on the rotating shaft, a steel wire rope 3 is wound in an upper half wheel groove of the speed limiter wheel disc 2, when an elevator car moves, the steel wire rope is driven to move together, and the wheel disc and the shaft are driven to rotate together by utilizing the friction force between the steel wire rope 3 and the speed limiter wheel disc 2; a ratchet wheel 4 is sleeved on a rotating shaft between the speed limiter wheel disc 2 and the frame through a bearing, and the ratchet wheel 4 can rotate around a shaft. This design is equipped with rotary encoder simultaneously in the pivot for detect the speed of overspeed governor rim plate.

In the design, a pin shaft is arranged at the eccentric position of the ratchet wheel, one end of a connecting rod 8 is connected with the ratchet wheel 4 through the pin shaft, the other end of the connecting rod is connected with a rope pressing mechanism 9, and the rope pressing mechanism 9 and the speed limiter wheel disc 2 together clamp the steel wire rope 3 to implement braking.

In the design, two centrifugal blocks 1 are arranged on a wheel disc 2 of the speed limiter, one end of each centrifugal block 1 is hinged with a linkage pull rod, the other end of each centrifugal block 1 is hinged with a return pull rod, and the centrifugal blocks are pressed to the position closest to a rotation center under the action of return springs.

In this design, set up at 2 opposite sides of overspeed governor rim plates and trigger the spring bolt, trigger the spring bolt and be used for triggering pawl 7. When the speed of the speed governor wheel disc 2 exceeds a preset value, the centrifugal block 1 overcomes the acting force of the return spring to throw away in the direction far away from the rotating center under the action of centrifugal force, the trigger lock tongue is pushed to release the pawl 7, the ratchet wheel 4 is clamped, and the ratchet wheel rotates around a shaft to drive the connecting rod 8, so that the rope pressing mechanism 9 and the speed governor wheel disc 2 clamp and brake the steel wire rope together.

In this design, set up wire rope and carry pulling mechanism, drive ball screw 20 by lifting motor (step motor 21) and rotate to promote mobile station 19, mobile station 19 drives voussoir pull rod 22, and voussoir pull rod 22 promotes voussoir 24 and presss from both sides tight wire rope 3 and upward movement along with mobile station 19, thereby makes wire rope break away from the overspeed governor wheel.

In the design, an electromagnetic clutch is arranged, one end of the electromagnetic clutch is connected with a main shaft of a wheel disc of the speed limiter, and the other end of the electromagnetic clutch is connected with a detection motor; the detection motor is installed on a support, and the support is arranged on a side plate of the speed limiter rack. In addition, a measurement and control unit is arranged in the design, the measurement and control unit judges the moving speed of the elevator car according to the rotating speed of the wheel disc 2 of the speed limiter obtained by the detection of the rotary encoder, and outputs a speed limiting control signal to implement speed limiting when the moving speed of the elevator car exceeds a set value. The measurement and control unit can control the lifting motor and the movement of the detection motor and the power-on and power-off of the electromagnetic clutch at the same time, and a related control circuit is the prior art. The measurement and control unit of the design can be a PLC controller.

When the design is used for checking the speed limiter, as shown in fig. 3, the measurement and control unit controls the stepping motor 21 to drive the moving platform 19 to move upwards, the moving platform 19 drives the wedge pull rod 22 to move, and the wedge pull rod 22 pushes the wedge 24 to clamp the steel wire rope 3. As shown in fig. 5, the wire rope 3 is gradually lifted up as the moving table 19 moves until the wire rope 3 is separated from the governor sheave 2 and the lifting motor (the stepping motor 21) stops operating.

Then, the measurement and control unit controls the electromagnetic clutch to be electrified; the measurement and control unit controls the detection motor 15 to accelerate, so that a main shaft of the wheel disc of the speed limiter is driven to rotate, and the measured speed of the wheel disc of the speed limiter is fed back to the control system in real time by the rotary encoder. Along with the lapse of time, the rotational speed of overspeed governor rim plate 2 is faster and faster, and centrifugal block 1 receives centrifugal force bigger and bigger, until the promotion triggers the spring bolt and releases the pawl, blocks the ratchet. The system records the maximum rotating speed of the wheel disc of the speed limiter and judges whether the moving speed of the car accords with the speed range set by the system or not according to the speed. And then whether the work of the speed limiter is reliable or not is judged, and a basis is provided for elevator inspection personnel and maintenance personnel to work in the next step. Then the measurement and control unit controls the electromagnetic clutch, detects the power loss of the motor, controls the lifting motor to move reversely, drives the pull rod to move downwards by the mobile station, and gradually releases the steel wire rope.

The application of the design is as follows: china is a large elevator consumption country, and at present, elevators are reserved in the first place in the world. To present overspeed governor of existing market detect waste time, hard, and have very big potential safety hazard problem when detecting the measurement personnel, design a neotype on-line measuring overspeed governor, during the detection, need not measurement personnel and get into the well to avoided the staff to fall the well danger, and accessible the control unit accomplishes the detection on line, just can accomplish whole detection work alone, labour saving and time saving has higher spreading value.

According to the elevator speed limiter, the automatic lifting device of the steel wire rope is additionally arranged, so that the steel wire rope is automatically separated from the wheel disc of the speed limiter, a series of complicated operations such as entering of workers into a hoistway and the like are not needed, time is saved, and the condition that the workers fall down the hoistway to cause casualties is avoided; and the electromagnetic clutch is arranged, the detection motor is controlled by the measurement and control unit to accelerate the main shaft of the speed limiter, and the detection result is fed back in real time through the rotary encoder, so that other professional detection tools are not needed, and the device has the advantages of convenience, rapidness and the like.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.