CN210505143U

CN210505143U - Elevator car overload protection device

Info

Publication number: CN210505143U
Application number: CN201921561651.2U
Authority: CN
Inventors: 段春鹏; 张明; 杨正皓
Original assignee: Doppler Elevator Co ltd
Current assignee: Doppler Elevator Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-12
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses an elevator car overload protection device, include adjusting bolt and be used for installing the micro-gap switch at sedan-chair underframe upper surface, its characterized in that: the car bottom frame is connected with a buffer device, and the buffer device is positioned between the adjusting bracket and the microswitch; the device can realize elevator overload protection's purpose, simultaneously, can also avoid contact screw to crush micro-gap switch after the overtravel, can play the purpose of protection to micro-gap switch.

Description

Elevator car overload protection device

Technical Field

The utility model relates to an elevator overload protection technical field, concretely relates to elevator car overload protection device.

Background

Whether current elevator is in underload, full-load, when overloading detecting the elevator, generally be through a micro-gap switch of car frame bracket underbeam installation, receive the load difference through elevator car, there is compressive deformation at the bottom of the car, and the car bottom compresses the different degree that touches micro-gap switch's the thin button of stopper post, detects the elevator and is in what kind of state.

The application numbers are: CN201520428273.6, publication no: the utility model discloses a car overload protection device of N204714263U, overload device includes sedan-chair underframe, block rubber, stop screw, micro-gap switch, the block rubber set up in the upper surface of sedan-chair underframe, the outside of block rubber is equipped with stop screw, the upper surface of sedan-chair underframe still is equipped with micro-gap switch, micro-gap switch's start button's top is equipped with contact screw, contact screw fixed mounting is at the car bottom. The utility model has the advantages of simple structure, sensitive action and the like, the rubber block is not only a weighing element but also a damping element, the structure of the car bottom is greatly simplified, and the adjustment and the maintenance are easy; the microswitch is arranged in the middle of the car bottom frame, plays a role when the car bears load and can cut off the elevator outer call load stop circuit and the elevator control circuit; the screw of the touch switch is directly arranged on the car bottom, and the control range of the overload can be adjusted only by adjusting the height of the screw.

However, in practical use, there are still a series of problems:

1. because micro-gap switch and contact screw hard contact, micro-gap switch and contact screw are close apart from, if the elevator overload volume is too big, and the deformation at the bottom of the car is too big, leads to contact screw to move down the volume greatly, though be equipped with stop screw, but the deformation of the bottom of the car middle part can be very big, and contact screw is very likely to crush micro-gap switch like this, and it is inconvenient to maintain.

2. In the debugging process, the distance of the micro switch of the contact screw is not easy to grasp, and in the debugging process, the micro switch is crushed by the contact screw.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an among the overcoming prior art, at the in-process of in-service use and elevator debugging, contact screw stroke volume is too big, with the shortcoming of micro-gap switch crushing, provides an elevator car overload protection device, and the device can realize elevator overload protection's purpose, simultaneously, can also avoid the contact screw to crush micro-gap switch after the overtravel.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides an elevator car overload protection device, includes adjusting bolt and is used for installing the micro-gap switch at sedan-chair underframe upper surface which characterized in that: still including being used for installing the regulation support at the bottom of the car, adjusting bolt installs on adjusting the support, adjusting the support and can following the removal that the car made adjusting bolt be close to, keep away from micro-gap switch, be connected with buffer on the car underframe, buffer is located between regulation support and the micro-gap switch.

Buffer is including being used for installing the support frame at sedan-chair underframe upper surface for install the magnet I at the adjusting bolt tip, magnet II that can reciprocate after passing the support frame and can be in the elevator operation in-process with the dead locking device of II locks of magnet, magnet I sets up with II homopolarity relatively of magnet, II upper end peripheries of magnet are equipped with spacing platform, go up and be equipped with the elastic component between spacing platform and the support frame, II lower extremes of magnet are equipped with down spacing platform, under the effect of elastic component, spacing platform terminal surface can laminate with the support frame lower extreme down.

The elastic piece is a spring, the spring sleeve is on magnet II, the spring upper end with go up spacing platform and be connected, the lower extreme is connected with support frame surface.

The elastic piece comprises a plurality of small springs uniformly distributed on the periphery of the magnet II, the upper ends of the small springs are connected with the upper limiting table, and the lower ends of the small springs are connected with the surface of the support frame.

And a hard cushion pad is arranged on the end face, attached to the lower end of the support frame, of the lower limiting table.

Be equipped with the guided way on the support frame, be equipped with the guide way on magnet II, magnet II passes behind the support frame the guided way can mutually support with the guide way.

And a hard buffer pad is arranged at the lower end of the magnet II.

The locking device comprises two locking mechanisms which are arranged on the support frame and located at the left end and the right end of the magnet II respectively, each locking mechanism comprises a guide cylinder, a connecting rod, a locking spring, a locking block, a sliding block and an electromagnet, the guide cylinders are mounted on the support frame, the electromagnets are mounted at the left ends of the guide cylinders, the sliding blocks are mounted in the guide cylinders and can slide, the connecting rods penetrate through the right side walls of the guide cylinders, the left ends of the connecting rods are connected with the sliding blocks, the right ends of the connecting rods are connected with the locking blocks, the locking springs are located in the guide cylinders and sleeved on the connecting rods, one ends of the springs are connected with the sliding blocks, one ends of the springs are connected with the right side walls of the guide cylinders, the electromagnets are used for being connected with an elevator control circuit, locking lines are arranged on the.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a buffer that sets up can play the effect of buffering, and this buffer is an intermediate unit, can avoid adjusting bolt and micro-gap switch to carry out direct contact, and like this, in the in-service use, even the elevator overload capacity is big, the deformation volume at the bottom of the car is great, and adjusting bolt can not crush micro-gap switch yet, can play the effect of protection to the fine motion; in addition, in the actual adjustment, even if an adjustment error occurs, the microswitch cannot be damaged under the action of the buffer device; the utility model discloses not only can play overload protection's effect, simultaneously, can also play the effect of protection to micro-gap switch, extension micro-gap switch's life improves its economic value.

Drawings

Fig. 1 is a schematic view of the installation position of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 3 is a schematic view of the installation position relationship of the small spring of the present invention.

Fig. 4 is a partially enlarged view of the point B in fig. 2 according to the present invention.

Reference numerals: 1 car underframe, 2 car bottoms, 3 buffer, 4 micro-gap switches, 5 adjusting supports, 6 adjusting bolts, 7 support frames, 8 magnet I, 9 magnet II, 10 upper limit platform, 11 lower limit platform, 12 springs, 13 little springs, 14 hard cushion pads, 15 guide rails, 16 guide grooves, 17 guide cylinders, 18 connecting rods, 19 locking springs, 20 locking blocks, 21 sliding blocks, 22 electromagnets and 23 locking lines.

Detailed Description

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The utility model provides an elevator car overload protection device, includes adjusting bolt 6 and is used for installing micro-gap switch 4 at 1 upper surface of sedan-chair underframe, still includes the regulation support 5 that is used for installing at 2 at the bottom of the sedan-chair, adjusting bolt 6 installs on adjusting support 5, adjusting support 5 can follow the removal of car and make adjusting bolt 6 be close to, keep away from micro-gap switch 4, is connected with buffer 3 on sedan-chair underframe 1, buffer 3 is located between adjusting support 5 and micro-gap switch 4.

Like this, through the regulation support 5 that sets up, the installation and the regulation of adjusting bolt 6 of being convenient for more, through the position of fine setting adjusting bolt 6 on regulation support 5, adjust adjusting bolt 6 and micro-gap switch 4's distance, make adjusting bolt 6 remove and touch micro-gap switch 4 through 2 deformations at the bottom of the car, come the control circuit who cuts off the elevator or awaken up overload voice prompt circuit through micro-gap switch 4.

More importantly, the buffer device 3 avoids the direct contact between the adjusting bolt 6 and the microswitch 4, and the microswitch 4 can be effectively protected.

Of course, in actual use, three adjusting bolts 6 and the micro switch 4 can be provided, and what state the elevator is in is detected through the distance between the adjusting bolt 6 and the micro switch 4, such as: light load, full load, overload state.

Wherein, buffer 3 is including being used for installing support frame 7 at 1 upper surface of sedan-chair underframe for install the magnet I8 at 6 tip of adjusting bolt, pass magnet II 9 that can reciprocate behind support frame 7 and can be in the elevator operation in-process with the dead locking device of II 9 locks of magnet, magnet I8 and the relative setting of II 9 homopolarity of magnet, II 9 upper end peripheries of magnet are equipped with upper limit station 10, be equipped with the elastic component between upper limit station 10 and the support frame 7, II 9 lower extremes of magnet are equipped with down limit station 11, and under the effect of elastic component, 11 terminal surfaces of lower limit station can laminate with 7 lower extremes of support frame.

In actual use, the N pole of the magnet I8 faces downwards, the N pole of the magnet II 9 faces upwards, or the S pole of the magnet I8 faces downwards and the S pole of the magnet II 9 faces upwards, so that the magnets can repel each other in the same polarity; the elastic component that sets up can play the effect of support to magnet II 9 to make 11 terminal surfaces of lower spacing platform and the laminating of support frame 7 lower extreme of magnet II 9, make magnet II 9 be in quiescent condition on support frame 7.

When people or goods enter the elevator, the car bottom 2 deforms, so that the adjusting bolt 6 moves downwards, the magnet I8 moves downwards, the N pole of the magnet I8 is close to the N pole of the magnet II 9, the magnet II 9 is displaced under the principle that like poles repel each other, the lower end of the magnet II 9 is close to the microswitch 4, and when the overload limit is reached, the lower end of the magnet II 9 is in contact with the microswitch 4.

The locking device can lock the magnet II 9, an overweight or weightlessness state can occur when the elevator runs, and the locking device can prevent the magnet II 9 from moving under the action of inertia to trigger the microswitch 4 by mistake when the elevator runs; when the elevator stops, the locking device is opened, and the elevator is locked when running.

For easy understanding, the present invention will be further explained:

in actual use, debugging is needed, and the debugging process is as follows: when the elevator is in no-load, the magnet II 9 and the magnet I8 are adjusted to the maximum distance, and the magnet II 9 is in a static state; when the elevator is fully loaded, the elevator is gradually loaded to full load, the magnet II 9 is ensured not to trigger the microswitch 4, then the adjusting bolt 6 is screwed, the magnet II 9 moves downwards under the action of the magnet I8 and is contacted with the microswitch 4, and the microswitch 4 is ensured to be triggered; the adjusting process is simple and convenient, and the condition that the microswitch 4 is crushed cannot occur in the debugging process.

More importantly, because buffer 3's setting, even the overload condition appears in the elevator, magnet II 9 is further close to with magnet I8, and at this moment, the elastic component can play the effect of buffering, avoids magnet II 9 and micro-gap switch 4 rigid contact, can play the effect of protection to micro-gap switch 4.

Further preferably, the elastic part is a spring 12, the spring 12 is sleeved on the magnet II 9, the upper end of the spring 12 is connected with the upper limiting table 10, and the lower end of the spring is connected with the surface of the support frame 7.

Further optimization, a hard cushion pad 14 is arranged on the end face, attached to the lower end of the support frame 7, of the lower limiting table 11; when the elevator is lightly loaded, the magnet II 9 is reset under the action of the spring 12, and the lower limit table 11 collides with the support frame 7.

Further preferably, a guide rail 15 is arranged on the support frame 7, a guide groove 16 is arranged on the magnet II 9, and the guide rail 15 and the guide groove 16 can be matched with each other after the magnet II 9 penetrates through the support frame 7.

Therefore, the moving process of the magnet II 9 can be ensured to be more stable.

Further preferably, a hard buffer pad 14 is arranged at the lower end of the magnet II 9; this stereoplasm blotter 14 mainly plays the effect of buffering, avoids II 9 and the micro-gap switch 4 hard contacts of magnet, and the stereoplasm blotter 14 that sets up can alleviate its instantaneous vibration of contact to a certain extent, and it needs to explain that, here stereoplasm blotter 14 adopt the great rubber packing of hardness or plastic packing can.

Further explaining, the locking device comprises two locking mechanisms which are respectively arranged on the support frame 7 and are positioned at the left end and the right end of the magnet II 9, the locking mechanism comprises a guide cylinder 17, a connecting rod 18, a locking spring 19, a locking block 20, a sliding block 21 and an electromagnet 22, the guide cylinder 17 is arranged on the support frame 7, the electromagnet 22 is arranged at the left end in the guide cylinder 17, the slide block 21 is arranged in the guide cylinder 17 and can slide, the left end of the connecting rod 18 passes through the right side wall of the guide cylinder 17 and is connected with the slide block 21, the right end of the connecting rod is connected with the locking block 20, the locking spring 19 is positioned in the guide cylinder 17 and sleeved on the connecting rod 18, one end of the spring 12 is connected with the sliding block 21, the other end is connected with the right side wall of the guide cylinder 17, the electromagnet 22 is used for being connected with an elevator control circuit, locking grains 23 are arranged on the locking block 20, and locking grains 23 corresponding to the upper limiting table 10 of the magnet II 9 are arranged on the upper limiting table 10.

Therefore, in actual use, the electromagnet 22 is switched on and off according to the condition of a control circuit of the elevator, and the electromagnet II 9 is mainly ensured not to move and mistakenly touch the microswitch 4 in the running process of the elevator; it should be noted that the electromagnet 22 is connected with a control circuit of the elevator through a controller, when the elevator operates, an operation signal of the control circuit of the elevator is transmitted to the controller, the controller processes the signal to generate a control signal, the electromagnet 22 is powered off according to the control signal, under the action of the locking spring 19, the sliding block 21 drives the connecting rod 18 and the locking block 20 to move towards the magnet ii 9, the locking grain 23 on the locking block 20 is matched with the locking grain 23 on the magnet ii 9 to lock the magnet ii 9, the magnet ii 9 cannot move in the vertical direction, and two locking mechanisms are provided, so that the locking state of the magnet ii 9 can be more stable when the elevator operates; when the elevator stops, a stop signal of an elevator control circuit is transmitted to the controller, the controller generates a control signal after processing the signal, at the moment, the electromagnet 22 is electrified, the slide block 21 is attracted to move in the direction opposite to the direction of the magnet II 9, and the locking state is released.

Example 2

This embodiment is substantially the same as embodiment 1, except that: the elastic part comprises a plurality of small springs 13 uniformly distributed on the periphery of the magnet II 9, the upper ends of the small springs 13 are connected with the upper limiting table 10, and the lower ends of the small springs are connected with the surface of the support frame 7.

Like this, support it through the equipartition at the peripheral little spring 13 of II 9 of magnet, II 9 atresss more evenly, and II 9 of magnet are more smooth and easy when removing, avoid II 9 of magnet and support frame 7 to take place to wipe and hang, wearing and tearing.

Claims

1. The utility model provides an elevator car overload protection device, includes adjusting bolt and is used for installing the micro-gap switch at sedan-chair underframe upper surface which characterized in that: still including being used for installing the regulation support at the bottom of the car, adjusting bolt installs on adjusting the support, adjusting the support and can following the removal that the car made adjusting bolt be close to, keep away from micro-gap switch, be connected with buffer on the car underframe, buffer is located between regulation support and the micro-gap switch.

2. An elevator car overload protection apparatus according to claim 1, wherein: buffer is including being used for installing the support frame at sedan-chair underframe upper surface for install the magnet I at the adjusting bolt tip, magnet II that can reciprocate after passing the support frame and can be in the elevator operation in-process with the dead locking device of II locks of magnet, magnet I sets up with II homopolarity relatively of magnet, II upper end peripheries of magnet are equipped with spacing platform, go up and be equipped with the elastic component between spacing platform and the support frame, II lower extremes of magnet are equipped with down spacing platform, under the effect of elastic component, spacing platform terminal surface can laminate with the support frame lower extreme down.

3. An elevator car overload protection apparatus according to claim 2, wherein: the elastic piece is a spring, the spring sleeve is on magnet II, the spring upper end with go up spacing platform and be connected, the lower extreme is connected with support frame surface.

4. An elevator car overload protection apparatus according to claim 2, wherein: the elastic piece comprises a plurality of small springs uniformly distributed on the periphery of the magnet II, the upper ends of the small springs are connected with the upper limiting table, and the lower ends of the small springs are connected with the surface of the support frame.

5. An elevator car overload protection apparatus according to claim 2, wherein: and a hard cushion pad is arranged on the end face, attached to the lower end of the support frame, of the lower limiting table.

6. An elevator car overload protection apparatus according to claim 2, wherein: be equipped with the guided way on the support frame, be equipped with the guide way on magnet II, magnet II passes behind the support frame the guided way can mutually support with the guide way.

7. An elevator car overload protection apparatus according to claim 2, wherein: and a hard buffer pad is arranged at the lower end of the magnet II.

8. An elevator car overload protection apparatus according to claim 2, wherein: the locking device comprises two locking mechanisms which are arranged on the support frame and located at the left end and the right end of the magnet II respectively, each locking mechanism comprises a guide cylinder, a connecting rod, a locking spring, a locking block, a sliding block and an electromagnet, the guide cylinders are mounted on the support frame, the electromagnets are mounted at the left ends of the guide cylinders, the sliding blocks are mounted in the guide cylinders and can slide, the connecting rods penetrate through the right side walls of the guide cylinders, the left ends of the connecting rods are connected with the sliding blocks, the right ends of the connecting rods are connected with the locking blocks, the locking springs are located in the guide cylinders and sleeved on the connecting rods, one ends of the springs are connected with the sliding blocks, one ends of the springs are connected with the right side walls of the guide cylinders, the electromagnets are used for being connected with an elevator control circuit, locking lines are arranged on the.