CN216512250U - Safety tongs lifting mechanism - Google Patents
Safety tongs lifting mechanism Download PDFInfo
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- CN216512250U CN216512250U CN202122770453.0U CN202122770453U CN216512250U CN 216512250 U CN216512250 U CN 216512250U CN 202122770453 U CN202122770453 U CN 202122770453U CN 216512250 U CN216512250 U CN 216512250U
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- safety
- safety gear
- driving device
- switch
- rope
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Abstract
The utility model relates to a safety gear lifting mechanism which comprises an installation beam, a safety switch, a driving device, a safety rope, a safety gear, a speed detection device and a control device, wherein the installation beam is arranged on the installation beam; the driving device is installed on the installation beam, one end of the safety rope is connected to the driving device, the other end of the safety rope is connected to the safety tongs, and the driving device drives the safety tongs to act through the safety rope. The speed of elevator is monitored in real time through the speed detection device in the scheme, the control device indicates the driving device to drive the safety gear to move after the running speed of the elevator exceeds the preset speed, the driving device is driven by the control device to move to realize the real-time control of the safety gear, the response time of the safety gear is shortened, the state of the driving device is detected through the safety switch, and the stability and the reliability of the safety gear lifting device are improved.
Description
Technical Field
The utility model relates to the field of elevator equipment, in particular to a safety gear lifting mechanism.
Background
Safety tongs are one of the important safety components of an elevator and are essential for the safety of elevator passengers and for the safe operation of the elevator. When the running speed of the elevator exceeds the safe speed, the elevator speed limiter acts, the safety tongs at two sides of the car act by pulling the car safety tongs lifting device through the speed limiter steel wire rope, and the safety tongs tightly clamp the car guide rail, so that the car brakes. The safety gear lifting mechanism is an important part for connecting the speed limiter and the safety gear. Reasonable structural design can reliably and effectively clamp and stop the elevator in a linkage safety manner. The conventional elevator safety tongs mostly adopt a mechanical trigger type structure, when the elevator runs at an excessive speed to cause the action of a speed limiter, the safety tongs are lifted through a speed limiter steel wire rope to realize the braking of the safety tongs, but the mechanical trigger type speed limiter is possibly invalid or generates misoperation after the speed limiter works for a long time, and meanwhile, the safety tongs simply adopt the mechanical trigger type mode, so that the problems of overlong response time and insensitivity exist under certain conditions, and certain potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that in the prior art, the elevator safety gear has long response time and is likely to fail after being used for a long time, and provides a novel safety gear lifting mechanism which has short response time and stable and reliable work.
In order to achieve the above object, the present invention provides a safety gear lifting mechanism, comprising a mounting beam, a safety switch, a driving device, a safety rope, a safety gear, a speed detecting device, and a control device; the driving device is arranged on the mounting beam, one end of the safety rope is connected to the driving device, the other end of the safety rope is connected to the safety tongs, and the driving device drives the safety tongs to act through the safety rope; the safety switch is used for detecting the state of the driving device; the safety tongs are provided with a channel for the elevator hoisting rope to pass through; the control device is linked with the speed detection device and the driving device, and the control device monitors the running speed of the elevator through the speed detection device and controls the driving device to work.
The speed of the elevator is monitored through the speed detection device, the driving device is controlled to drive the safety gear to move through the control device, the control device drives the driving device to move to realize real-time monitoring of the speed of the elevator, real-time control over the safety gear is further realized, the response time of the safety gear is greatly shortened, the state of the driving device is detected through the safety switch, and the stability and the reliability of the safety gear lifting mechanism are improved.
Preferably, the driving device comprises a fixed part obliquely mounted on the mounting beam and a movable part movably mounted on the fixed part, and the movable part can slide downwards along the fixed part under the action of self gravity.
The fixing part is obliquely arranged on the mounting beam, so that the moving part can slide down on the fixing part under the action of gravity, the safety gear lifting mechanism is effectively prevented from not acting due to power failure, and the reliability and stability of the safety gear lifting mechanism are further improved.
Preferably, the fixing part is arranged on the mounting beam at a negative inclination angle relative to the horizontal plane, and the angle range of the negative inclination angle is more than-45 degrees and less than 0 degree.
The moving part can slowly move in a power-off state in a mode that the fixing part is arranged between minus 45 degrees and 0 degree in a negative inclination angle relative to the horizontal plane, so that the safety gear can be driven to brake the elevator more stably.
Preferably, a safety switch is provided on a moving path of the moving part for detecting a position of the moving part.
The working state of the driving device is monitored by the arrangement of the safety switch, and the safety of the safety tongs pulling mechanism is improved.
Preferably, the safety switch comprises a first switch and a second switch, and the first switch is arranged between the second switch and the safety gear; the first switch is used for detecting the position of the moving part, and the second switch is used for detecting the position of the moving part and triggering the driving device to drive the safety gear to work.
The detection of the state of the driving device is realized through the arrangement of the first switch, the dual monitoring of the driving device is realized through the arrangement of the second switch, and the safety of the safety tongs pulling mechanism is improved.
Preferably, the safety gear lifting mechanism further comprises a guide wheel mounted on the mounting beam, and the guide wheel is used for limiting and guiding the safety rope.
The safety rope is guided and limited better by the guide wheels.
Preferably, the mounting beam is further provided with a separation blade, the separation blade is arranged between the guide wheel and the safety gear, the separation blade is provided with a channel for the safety rope to pass through, and the separation blade is used for limiting the safety rope and preventing the safety gear from moving.
The limiting of the safety gear is realized through the action of the blocking piece, and the safety gear is ensured to be always positioned in a working area.
Preferably, the safety rope is further sleeved with a spring, a first end of the spring abuts against the stop piece, and a second end of the spring abuts against the safety gear.
The arrangement of the spring realizes flexible limitation of the safety gear, and false triggering of the safety gear due to shaking of the elevator is avoided.
The running speed of elevator is monitored in real time through speed detection device to this scheme, and controlling means will instruct drive arrangement drive safety tongs action when the running speed of elevator surpasss preset speed back, drives the real-time control that the safety tongs was realized in the drive arrangement action through controlling means, and then has shortened the response time of safety tongs, detects drive arrangement's state through safety switch, has increased the reliable and stable nature of safety tongs pulling apparatus. The safety switch can give an alarm to the abnormal state of the driving device to remind maintenance personnel of maintaining in time.
Drawings
For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the utility model without any limiting effect on the scope of the utility model, and that the various components in the drawings are not drawn to scale.
Fig. 1 is a schematic view of the installation of a safety gear pulling mechanism according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of the safety gear lifting mechanism a shown in fig. 1;
fig. 3 is a partially enlarged view of the safety gear lifting mechanism B shown in fig. 1;
fig. 4 is a cross-sectional view taken along line C-C of the front view of the safety gear pulling mechanism of fig. 1.
Description of reference numerals:
mounting a beam 1; a fixed part 2; a moving section 3; a safety rope 4; a safety gear 5; a second switch 6; a first switch 7; a guide wheel 8; a spring 9; a baffle plate 10; a negative rake angle 11.
Detailed Description
The utility model is explained in more detail below with reference to the figures and examples. Reference will now be made in detail to the preferred embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following preferred embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely preferred for implementing the apparatus and method in accordance with certain aspects of the utility model, as detailed in the appended claims, and other ways of implementing the utility model will occur to those skilled in the art and are within the scope of the utility model. In the following detailed description, directional terms, such as "upper", "lower", "inner", "outer", "longitudinal", "lateral", and the like, are used with reference to the orientation depicted in the accompanying drawings. Components of embodiments of the present invention may be positioned in a variety of orientations, and the directional terminology is used for purposes of illustration and is in no way limiting.
As shown in fig. 1, 2 and 3, the present invention provides a safety gear lifting mechanism, which includes a mounting beam 1, a safety switch, a driving device, a safety rope 4, a safety gear 5, a speed detecting device and a control device; the driving device is arranged on the mounting beam 1, one end of the safety rope 4 is connected to the driving device, the other end of the safety rope 4 is connected to the safety gear 5, and the driving device drives the safety gear 5 to act through the safety rope 4; the safety switch is used for detecting the state of the driving device; the safety gear 5 is provided with a channel for the elevator hoisting rope to pass through; the control device is linked with the speed detection device and the driving device, and the control device monitors the running speed of the elevator through the speed detection device and controls the driving device to work.
The running speed of elevator is monitored in real time through speed detection device to this scheme, and controlling means will instruct drive arrangement drive safety tongs 5 action when the running speed of elevator surpasss preset speed back, drives the real time control that drive arrangement moved realization safety tongs 5 through controlling means, and then has shortened safety tongs 5's response time, detects drive arrangement's state through safety switch, has increased safety tongs 5 and has carried the reliable and stable nature of pulling the device. The safety switch can give an alarm to the abnormal state of the driving device to remind maintenance personnel of maintaining in time.
In one implementation, the speed detection device is a magnetic scale.
In one implementation, the mounting beam 1 may be disposed above the elevator or also below the elevator.
In a driving device comprising a fixed part 2 mounted obliquely on a mounting beam and a movable part 3 movably mounted on the fixed part 2, the movable part 3 can slide downwards along the fixed part under the action of its own weight.
The fixing part 2 is obliquely arranged on the mounting beam 1, so that the moving part 3 can slide down on the fixing part 2 along the gravity of the fixing part, the phenomenon that the safety gear 5 lifting mechanism does not act due to power failure is effectively avoided, and the reliability and stability of the safety gear 5 lifting mechanism are further improved. Specifically, the mounting height of the fixing part close to one end of the safety gear is larger than that of the fixing part far away from one end of the safety gear.
In one implementation, the driving device is a linear motor, the fixed part 2 is a stator of the linear motor, the moving part 3 is a rotor of the linear motor, and the safety switch detects the position of the rotor of the linear motor so as to realize real-time monitoring of the state of the linear motor.
In one implementation, as shown in fig. 4, the fixing portion 2 is mounted on the mounting beam at a negative inclination angle 11 with respect to the horizontal plane, and the angle range of the negative inclination angle 11 is greater than-45 degrees and less than 0 degree.
The moving part 3 can slowly move in a power-off state in a mode that the fixing part 2 is arranged between minus 45 degrees and 0 degree relative to the horizontal plane at a negative inclination angle 11, so that the safety gear 5 can be driven to brake the elevator more stably. The potential safety hazard caused by the fact that the movable part 3 moves too fast due to the fact that the inclination angle of the fixed part 2 relative to the horizontal plane is too large is avoided. Meanwhile, a mechanical lifting mechanism is added to the lifting mechanism of the safety gear 5, and the stability of the lifting mechanism of the safety gear 5 is improved.
In one implementation, a safety switch is provided on the moving path of the moving part 3, the safety switch being used to detect the position of the moving part 3.
The working state of the driving device is monitored by the arrangement of the safety switch, and the operation safety of the lifting mechanism of the safety gear 5 is improved.
In one implementation, the safety switch comprises a first switch 7 and a second switch 6, the first switch 7 being arranged between the second switch 6 and the safety gear 5; the first switch 7 is used for detecting the position of the moving part 3, and the second switch 6 is used for detecting the position of the moving part 3 and triggering the driving device to drive the safety gear 5 to work.
When the elevator is maintained, the situation that whether the driving device is blocked or out of order can be quickly detected by controlling the moving part 3 to move towards the second switch 6. When the moving part of the driving device operates, the first switch 7 is triggered firstly, so that the electric drive triggering in the triggering process of the safety gear can act earlier than the mechanical drive triggering when the driving device works normally.
The detection of the state of the driving device is realized through the arrangement of the first switch 7, the dual monitoring of the driving device is realized through the arrangement of the second switch 6, and the safety of the lifting mechanism of the safety gear 5 is improved.
In one implementation, the safety gear 5 lifting mechanism further comprises a guide wheel 8 mounted on the mounting beam 1, and the guide wheel 8 is used for limiting and guiding the safety rope 4.
The safety rope 4 is better guided and limited by the guide wheel 8. In one implementation, one or more guide wheels 8 can be arranged according to actual requirements.
In one implementation, as shown in fig. 3, a blocking piece 10 is further installed on the installation beam 1, the blocking piece 10 is disposed between the guide wheel 8 and the safety gear 5, a passage for the safety rope 4 to pass through is disposed on the blocking piece 10, and the blocking piece 10 is used for limiting the safety rope 4 and preventing the safety gear 5 from moving.
The limiting of the safety gear 5 is realized through the action of the blocking piece 10, and the safety gear 5 is ensured to be always positioned in a working area.
In one implementation, the safety rope 4 is further sleeved with a spring 9, a first end of the spring 9 abuts against the blocking piece 10, and a second end of the spring 9 abuts against the safety gear 5.
The arrangement of the spring 9 realizes the flexible limitation of the safety gear 5, and the false triggering of the safety gear 5 caused by the shaking of the elevator is avoided.
In one implementation mode, the pulling force of the moving part on the safety rope in the power-off state is greater than the elastic force of the spring, so that the safety gear can be stably controlled in the power-off state, and the stability of the lifting mechanism of the safety gear 5 is further improved.
According to the technical scheme provided by the utility model, the running speed of the elevator is detected by the speed detection device, and when the running speed of the elevator exceeds the preset speed, the control device controls the driving device to act so as to drive the safety gear to act; the control device drives the driving device to act, so that the speed of the elevator is monitored in real time, the safety gear is controlled in real time, and the response time and the corresponding speed of the safety gear are greatly shortened; the state of the driving device is detected through the safety switch, the stability and the reliability of the safety gear lifting mechanism are improved, the movable part can slide down on the fixed part along the gravity of the movable part when the movable part and the horizontal plane are installed on the installation beam in a negative inclination angle, the safety gear lifting mechanism is effectively prevented from not working due to power failure, and the reliability and the stability of the safety gear lifting mechanism are further improved.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims. The present invention is described in detail with reference to the accompanying drawings, which are incorporated herein by reference, and the like, and the embodiments of the present invention are not limited thereto.
Claims (8)
1. The safety gear lifting mechanism is characterized by comprising an installation beam, a safety switch, a driving device, a safety rope, a safety gear, a speed detection device and a control device;
the driving device is arranged on the mounting beam,
one end of the safety rope is connected to the driving device, the other end of the safety rope is connected to the safety gear, and the driving device drives the safety gear to act through the safety rope;
the safety switch is used for detecting the state of the driving device;
the safety tongs are provided with a channel for the elevator hoisting rope to pass through;
the control device is linked with the speed detection device and the driving device, and the control device monitors the running speed of the elevator through the speed detection device and controls the driving device to work.
2. A safety gear lifting mechanism according to claim 1, wherein the driving means comprises a fixed part mounted obliquely to the mounting beam and a movable part movably mounted to the fixed part, the movable part being slidable downwardly along the fixed part under its own weight.
3. A safety gear lifting mechanism according to claim 2, wherein the fixed part is mounted on the mounting beam at a negative inclination angle with respect to the horizontal plane, and the negative inclination angle is in the range of greater than-45 degrees and less than 0 degrees.
4. A safety gear lifting mechanism according to claim 3, wherein the safety switch is provided on a moving path of the moving part for detecting a position of the moving part.
5. The safety gear pulling mechanism of claim 4, wherein the safety switch comprises a first switch and a second switch, the first switch being disposed between the second switch and the safety gear;
the first switch is used for detecting the position of the moving part, and the second switch is used for detecting the position of the moving part and triggering the driving device to drive the safety gear to work.
6. The safety gear pulling mechanism according to claim 1, further comprising a guide wheel mounted on the mounting beam, the guide wheel for limiting and guiding the safety line.
7. The safety gear lifting mechanism according to claim 6, wherein a blocking piece is further mounted on the mounting beam, the blocking piece is arranged between the guide wheel and the safety gear, a channel for the safety rope to pass through is formed in the blocking piece, and the blocking piece is used for limiting the safety rope and preventing the safety gear from moving.
8. The safety gear lifting mechanism according to claim 7, wherein a spring is further sleeved on the safety rope, a first end of the spring abuts against the baffle, and a second end of the spring abuts against the safety gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122770453.0U CN216512250U (en) | 2021-11-12 | 2021-11-12 | Safety tongs lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122770453.0U CN216512250U (en) | 2021-11-12 | 2021-11-12 | Safety tongs lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216512250U true CN216512250U (en) | 2022-05-13 |
Family
ID=81528284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122770453.0U Active CN216512250U (en) | 2021-11-12 | 2021-11-12 | Safety tongs lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216512250U (en) |
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2021
- 2021-11-12 CN CN202122770453.0U patent/CN216512250U/en active Active
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