CN209758776U - dynamic test device for elevator speed limiter - Google Patents
dynamic test device for elevator speed limiter Download PDFInfo
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- CN209758776U CN209758776U CN201820713098.9U CN201820713098U CN209758776U CN 209758776 U CN209758776 U CN 209758776U CN 201820713098 U CN201820713098 U CN 201820713098U CN 209758776 U CN209758776 U CN 209758776U
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Abstract
The utility model relates to an elevator overspeed governor dynamic test device belongs to elevator overspeed governor capability test field. The device comprises a governor base 1, a guide rail frame 13, a tensioning device 2, a first pulley 3, a second pulley 4, a third pulley 5, a fourth pulley 6, a test frame support 7, a support 8, a force measuring sensor 9, a speed measuring sensor 10, a test frame 11, a double-rope winch 12 and a steel wire rope; the tensioning device 2 comprises a tensioning wheel 21, a tensioning weight 22 and a bracket 23; the test stand 11 is composed of a test bed 111, four test stand legs 112 and a horizontal base 113. The utility model can simultaneously test the lifting force and the action speed of the speed limiter, thereby saving the test time; the installation and adjustment are simple, the test data is visual, and the processing is simple.
Description
Technical Field
the utility model relates to an elevator overspeed governor capability test field relates to an elevator overspeed governor dynamic test device.
Background
The elevator speed limiter is an indispensable safety device in an elevator system, and can be matched with a safety gear to be used as a linkage protection device when an elevator exceeds the speed or is out of control. The elevator governor acts as a means of speed response and manipulation of the safety gear. The safety gear is a mechanism which forcibly stops the elevator on the guide rail by mechanical action. When an overspeed switch of the elevator speed limiter acts, an elevator safety loop or a control loop is cut off to brake the electromagnetic brake in a power-off mode. For example, the elevator continues to run downwards with high speed, the speed limiter of the elevator clamps the steel wire rope, the steel wire rope lifts the safety tongs and is linked with the pull rod to force the safety tongs to act, and the elevator is forcibly stopped on the guide rail. Therefore, whether the elevator speed limiter has enough lifting force and action speed is a determining factor for determining whether the safety tongs can rapidly stop the elevator car on the guide rail and avoid casualties and equipment damage accidents.
At present, the performance index testing device for the lifting force and the action speed of the elevator speed limiter can only separately test the lifting force and the action speed of the speed limiter, and can not test two indexes of the lifting force and the action speed simultaneously. In addition, when the existing device is used for carrying out a pulling force and action speed test, an accelerator is operated by manually applying external force, and the operation makes certain difference between simulation data and the actual elevator running condition. Therefore, the utility model provides an elevator overspeed governor dynamic test device can satisfy the pulling force and the action speed of carrying of test overspeed governor simultaneously.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a dynamic testing apparatus for elevator speed limiter, which is as close as possible to the actual working state of the speed limiter and avoids the use of differential loading caused by two winches; the lifting force and the action speed of the speed limiter can be tested simultaneously, and the testing time is saved; the installation and adjustment are simple, the test data is visual, and the processing is simple.
In order to achieve the above purpose, the utility model provides a following technical scheme:
A dynamic test device for an elevator speed limiter comprises a speed limiter base (1), a guide rail frame (13), a tensioning device (2), a first pulley (3), a second pulley (4), a third pulley (5), a fourth pulley (6), a test frame support (7), a support (8), a force measuring sensor (9), a speed measuring sensor (10), a test frame (11), a double-rope winch (12) and a steel wire rope; the tensioning device (2) comprises a tensioning wheel (21), a tensioning heavy hammer (22), a bracket (23) and a guide shaft; the test stand (11) consists of a test bed (111), four test stand legs (112) and a horizontal base (113);
the governor base (1) and the guide rail frame (13) are integrated and can be adjusted left and right, so that the steel wire rope is ensured to be tangent to the first pulley (3) and the second pulley (4), and the tangent lines are parallel; the governor base (1) is used for installing a speed governor provided by a customer; the tensioning wheel (21) is provided by a customer and has the same diameter as the speed governor pulley;
the guide shaft is embedded in a guide rail groove of the guide rail bracket (13), so that the tensioning device (2) can move up and down along the guide rail groove; the tensioning device (2) is suspended and lifted off the ground by a steel wire rope which is wound by a pulley on the tensioning device, so that the steel wire rope always has constant tensioning force;
The first pulley (3) and the second pulley (4) are arranged on a support (8), and the support (8) is fixed on a force measuring sensor (9); the force measuring sensor (9) is arranged on the test rack support (7);
The third pulley (5) and the fourth pulley (6) are arranged on one support leg of the test frame leg (112), so that the steel wire rope and the pulleys (3, 4, 5 and 6) are tangent, and tangent lines are parallel; the vertical height of the pulley (5) is kept higher than that of the pulley (4), and the vertical height of the pulley (6) is kept lower than that of the pulley (3);
the test bed (111) and the horizontal base (113) are composed of rectangles which are equal in size and parallel to each other, and each rectangle is composed of 4 steel frames; the test stand legs are composed of 4 steel frames with the same length and are kept vertical to the ground; four vertexes of the test bed are fixed at the highest points of the test frame legs; four vertexes of the horizontal base are fixed on the four test stand legs and are close to the ground.
further, the governor base (1) comprises a governor mounting base and a pressing plate; the mounting hole of the speed limiter mounting seat is a long hole, so that the center can be conveniently adjusted left and right; the pressure plate is used for fixing the speed limiter and is convenient for adjusting the center forwards and backwards;
The top of the guide rail frame (13) is fixed below the governor base, the other end of the guide rail frame is arranged on the horizontal base, and the mounting hole is a long hole, so that the guide rail frame and the governor base can be synchronously adjusted left and right;
A guide rail groove is embedded in the guide rail frame and used for adjusting the height of the tensioning device.
And furthermore, a hoisting lifting lug is arranged between the upper part of the tensioning device and the lower part of the speed limiter mounting seat, so that the hoisting and tensioning guide device is convenient to weigh and measure, and the tension of the speed limiter steel wire rope is convenient to accurately check.
furthermore, the diameters of the first pulley, the second pulley, the third pulley and the fourth pulley are equal, the rope grooves are all arc grooves with the diameter of 12mm, and the steel wire ropes with the diameters of 12mm, 10mm, 8mm and 6mm can be guaranteed to be universal. The steel wire ropes with different diameters are used, the pitch circle diameters of the pulleys are different, and when the action speed is tested, the accurate action speed can be obtained by inputting the pitch circle diameters of the corresponding speed measuring pulleys to participate in calculation.
Furthermore, the first pulley (3) and the second pulley (4) are concentric pulleys and are arranged on a coaxial same support (8); the load cell (9) adopts a bearing seat type load cell.
further, the force tested by the force measuring sensor (9) is 2 times of the lifting force of the speed limiter.
further, the speed measuring sensor (10) is arranged on a fourth pulley shaft, and the fourth pulley and the shaft are fixedly connected through a key; the rotating speed tested by the speed measuring sensor (10) multiplied by the pitch circle diameter of the fourth pulley is the moving linear speed of the steel wire rope.
Further, the steel wire rope is a closed loop rope; the double-rope winch (12) adopts a double-rope winding drum; the double-rope reel is provided with a spiral rope groove, and two end faces are provided with a steel wire rope penetrating hole and a rope head fixing pressing plate hole; the rope end fixing pressing plate hole is in a thread shape and used for installing a fixing pressing plate;
the diameter and length of the double-rope reel are set as follows: after 1.5 circles of safety rings are reserved at the two ends of the winding drum, the rope capacity is not less than 70 m.
further, the steel wire rope is matched with the speed limiter, and the length of the steel wire rope is about 100 m; one end of the steel wire rope penetrates through the through hole at one end of the winding drum, the other end of the steel wire rope penetrates through all pulleys of the pulley block and then is fixed at the through hole at the other end of the winding drum, and the rope head of the steel wire rope is fixed at the end surface of the winding drum through the pressing plate
Further, the process of threading and winding the steel wire rope comprises the following steps:
1) A customer provides a steel wire rope matched with the speed limiter by about 100m according to the requirement;
2) one end of the steel wire rope penetrates through the through hole at one end of the winding drum, and the rope head is fixed on the end face of the winding drum by the pressing plate;
3) starting the winch to wind the steel wire rope until only one circle of rope groove is left on the winding drum;
4) hoisting the tension device to a certain height from the ground by using hoisting equipment (such as a chain block);
5) Passing all pulleys of the pulley block according to the routing of the steel wire rope, finally passing the rope head through a through hole at the other end of the winding drum, straightening the steel wire rope, and finally fixing the steel wire rope on the end surface of the winding drum by using a pressing plate;
6) Lowering the tensioning device by using lifting equipment (a chain block), observing whether the height of the tensioning device is proper (the height above the ground and the upper and lower guide strokes are proper), and adjusting the rope head if the height is not proper; then hoisting equipment (chain block) is removed, and redundant steel wire ropes are cut off;
7) finishing the threading and winding of the steel wire rope; when the winch rotates, one end of the steel wire rope can be rolled in and the other end of the steel wire rope can be rolled out, and the length of the middle steel wire rope is unchanged, namely, the height of the tensioning device is basically unchanged; the tension of the steel wire rope is controlled by the weight of the tensioning weight, and the tension is half of the weight of the tensioning device; the constant tension force is realized and is matched with the actual working state of the speed limiter;
8) and setting a control system to limit the left and right winding limits of the steel wire rope on the winch drum.
further, the setting requirement of the speed v of the double-rope winch is as follows:
1) when the winding length of the steel wire rope is less than 30m, the double-rope winch keeps accelerating at a constant speed; when the winding length of the steel wire rope is equal to 30m, V is 90% V, wherein V is the action speed of the speed limiter;
2) When the winding length of the steel wire rope is greater than 30m and less than 50m, the double-rope winch keeps accelerating slowly at a constant speed, and when the winding length of the steel wire rope is equal to 50m, V is equal to V, so that the action speed of the speed limiter is accurately acquired;
3) when the winding length of the steel wire rope is larger than 50m, the double-rope winch keeps constant speed reduction, when the winding length of the steel wire rope is equal to 70m, v is 0, and enough time is guaranteed for collecting the lifting force of the speed limiter.
the beneficial effects of the utility model reside in that:
Device than traditional overspeed governor test testing arrangement: 1) the height of the test bed can be reduced (about 1.5m is enough), and the speed limiter is convenient to install and debug; 2) the length can be properly increased, and the normal rope arrangement of the winch can be ensured (about 3m is enough); 3) the winch mounting seat and the test bed can be not integrated, so that the structure is simpler and lighter, and the winch is not limited by the conditions of a mounting site under the condition of ensuring the normal rope arrangement of the winch. 4) The utility model is more in line with the actual working state of the speed limiter because the tension device applies load; the load is not loaded by the force difference of two windlasses, so that the load is not large or small; 5) only one winch is needed, and the counter-pulling overload of the winch cannot occur; 6) the installation and adjustment are simple, the test data is visual, and the processing is simple.
drawings
in order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
fig. 1 is an overall schematic view of the dynamic testing device of the speed limiter of the present invention;
Fig. 2 is a schematic diagram of the double-rope drum rope winding according to the present invention;
Fig. 3 is a graph of the speed setting curve of the hoist according to the present invention;
The figures are each marked with: 1-speed limiter, 2-tensioning device, 22-tensioning weight, 23-bracket, 21-tensioning wheel, 3-first pulley, 4-second pulley, 5-third pulley, 6-fourth pulley, 7-test bed support, 8-support, 9-force sensor, 10-speed sensor, 11-test frame, 111-test bed, 112-test frame leg, 113-horizontal base, 12-double-rope winch and 13-guide rail frame.
Detailed Description
the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
as shown in fig. 1, the dynamic test device for the elevator speed limiter comprises a speed limiter base 1, a guide rail frame 13, a tensioning device 2, a first pulley 3, a second pulley 4, a third pulley 5, a fourth pulley 6, a test frame support 7, a support 8, a force measuring sensor 9, a speed measuring sensor 10, a test frame 11, a double-rope winch 12 and a steel wire rope; the tensioning device 2 comprises a tensioning wheel 21, a tensioning weight 22, a bracket 23 and a guide shaft; the test stand 11 consists of a test bed 111, four test stand legs 112 and a horizontal base 113;
the governor base 1 and the guide rail frame 13 are integrated, and can be adjusted left and right, so that the steel wire rope is ensured to be tangent to the first pulley 3 and the second pulley 4, and the tangent lines are parallel; the governor base 1 is used for installing a speed governor provided by a customer; the tension pulley 21 is provided by a customer and has the same diameter as the speed governor pulley;
the guide shaft is embedded in a guide rail groove of the guide rail bracket 13 so that the tensioning device 2 can move up and down along the guide rail groove; the tensioning device 2 is suspended and lifted off the ground by a steel wire rope which is wound by a pulley on the tensioning device, so that the steel wire rope always has constant tensioning force;
The first pulley 3 and the second pulley 4 are arranged on a support 8, and the support 8 is fixed on a force measuring sensor 9; the force sensor 9 is arranged on the test stand support 7;
the third pulley 5 and the fourth pulley 6 are arranged on one support leg of the test frame leg 112, so that the steel wire rope is ensured to be tangent to the first pulley 3, the second pulley 4, the third pulley 5 and the fourth pulley 6, and tangent lines are parallel; keeping the vertical height of the third pulley 5 higher than that of the second pulley 4 and the vertical height of the fourth pulley 6 lower than that of the first pulley 3;
the test bed 111 and the horizontal base 113 are composed of rectangles which are equal in size and parallel to each other, and each rectangle is composed of 4 steel frames; the test stand legs are composed of 4 steel frames with the same length and are kept vertical to the ground; four vertexes of the test bed are fixed at the highest points of the test frame legs; four vertexes of the horizontal base are fixed on the four test stand legs and are close to the ground.
the governor base 1 comprises a governor mounting base and a pressing plate; the mounting hole of the speed limiter mounting seat is a long hole, so that the center can be conveniently adjusted left and right; the pressure plate is used for fixing the speed limiter and is convenient for adjusting the center forwards and backwards; the top of the guide rail frame 13 is fixed below the governor base, the other end of the guide rail frame is arranged on the horizontal base, and the mounting hole is a long hole, so that the guide rail frame and the governor base can be synchronously adjusted left and right; a guide rail groove is embedded in the guide rail frame and used for adjusting the height of the tensioning device.
And a hoisting lifting lug is arranged between the upper part of the tensioning device and the lower part of the speed limiter mounting seat, so that the hoisting and tensioning guide device can be conveniently lifted, the weighing and the metering of the tensioning guide device can be conveniently realized, and the tension of the speed limiter steel wire rope can be conveniently and accurately verified.
the diameters of the first pulley, the second pulley, the third pulley and the fourth pulley are equal, and the rope grooves are all arc grooves with the diameter of 12mm, so that the steel wire ropes with the diameters of 12mm, 10mm, 8mm and 6mm can be universal. The steel wire ropes with different diameters are used, the pitch circle diameters of the pulleys are different, and when the action speed is tested, the accurate action speed can be obtained by inputting the pitch circle diameters of the corresponding speed measuring pulleys to participate in calculation. The first pulley 3 and the second pulley 4 are concentric pulleys and are arranged on the same coaxial support 8; the load cell 9 is a bearing pedestal type load cell. The force tested by the force cell 9 is 2 times of the lifting force of the speed governor. The speed measuring sensor 10 is arranged on a fourth pulley shaft, and the fourth pulley and the shaft are fixedly connected through a key; the rotation speed measured by the speed measuring sensor 10 multiplied by the pitch circle diameter of the fourth pulley is the movement linear speed of the steel wire rope. The steel wire rope is a closed loop rope; the double rope hoist 12 employs a double rope drum, as shown in fig. 2; the double-rope reel is provided with a spiral rope groove, and two end faces are provided with a steel wire rope penetrating hole and a rope head fixing pressing plate hole; the rope end fixing pressing plate hole is in a thread shape and used for installing a fixing pressing plate; the diameter and length of the double-rope reel are set as follows: after 1.5 circles of safety rings are reserved at the two ends of the winding drum, the rope capacity is not less than 70 m.
the process of threading and winding the steel wire rope comprises the following steps:
1) a customer provides a steel wire rope matched with the speed limiter by about 100m according to the requirement;
2) One end of the steel wire rope penetrates through the through hole at one end of the winding drum, and the rope head is fixed on the end face of the winding drum by the pressing plate;
3) Starting the winch to wind the steel wire rope until only one circle of rope groove is left on the winding drum;
4) hoisting the tension device to a certain height from the ground by using hoisting equipment (such as a chain block);
5) Passing all pulleys of the pulley block according to the routing of the steel wire rope, finally passing the rope head through a through hole at the other end of the winding drum, straightening the steel wire rope, and finally fixing the steel wire rope on the end surface of the winding drum by using a pressing plate;
6) Lowering the tensioning device by using lifting equipment (a chain block), observing whether the height of the tensioning device is proper (the height above the ground and the upper and lower guide strokes are proper), and adjusting the rope head if the height is not proper; then hoisting equipment (chain block) is removed, and redundant steel wire ropes are cut off;
7) finishing the threading and winding of the steel wire rope; when the winch rotates, one end of the steel wire rope can be rolled in and the other end of the steel wire rope can be rolled out, and the length of the middle steel wire rope is unchanged, namely, the height of the tensioning device is basically unchanged; the tension of the steel wire rope is controlled by the weight of the tensioning weight, and the tension is half of the weight of the tensioning device; the constant tension force is realized and is matched with the actual working state of the speed limiter;
8) and setting a control system to limit the left and right winding limits of the steel wire rope on the winch drum.
the setting requirement of the speed v of the double-rope hoist is as follows, as shown in fig. 3:
1) When the winding length of the steel wire rope is less than 30m, the double-rope winch keeps accelerating at a constant speed; when the winding length of the steel wire rope is equal to 30m, V is 90% V, wherein V is the action speed of the speed limiter;
2) When the winding length of the steel wire rope is greater than 30m and less than 50m, the double-rope winch keeps accelerating slowly at a constant speed, and when the winding length of the steel wire rope is equal to 50m, V is equal to V, so that the action speed of the speed limiter is accurately acquired;
3) when the winding length of the steel wire rope is larger than 50m, the double-rope winch keeps constant speed reduction, when the winding length of the steel wire rope is equal to 70m, v is 0, and enough time is guaranteed for collecting the lifting force of the speed limiter.
example (b):
Through elevator overspeed governor test device tests pulling force and action speed of overspeed governor simultaneously, concrete operating procedure as follows:
1) installing the speed limiter to be tested on the speed limiter base;
2) Schematically sleeving a closed-loop steel wire rope on a tension pulley 21, a first pulley 3, a second pulley 4, a third pulley 5, a fourth pulley 6, a double-rope winch 12 and a speed limiter according to a diagram of fig. 1, and adjusting the tension state of the steel wire rope;
3) Starting the double-rope winch 12, and reading the measurement values of the force measuring sensor 9 and the speed measuring sensor 10 when the speed limiter reaches the operating state;
4) calculating to obtain the lifting force and the action speed of the test speed limiter; the lifting force of the speed governor is half of the measured value of the force measuring sensor 9, and the action speed of the speed governor is the rotating speed measured by the speed measuring sensor 10 multiplied by the pitch circle diameter of the pulley.
finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides an elevator overspeed governor dynamic test device which characterized in that: the device comprises a governor base (1), a guide rail frame (13), a tensioning device (2), a first pulley (3), a second pulley (4), a third pulley (5), a fourth pulley (6), a test frame support (7), a support (8), a force measuring sensor (9), a speed measuring sensor (10), a test frame (11), a double-rope winch (12) and a steel wire rope; the tensioning device (2) comprises a tensioning wheel (21), a tensioning heavy hammer (22), a bracket (23) and a guide shaft; the test stand (11) consists of a test bed (111), four test stand legs (112) and a horizontal base (113);
The governor base (1) and the guide rail frame (13) are integrated and can be adjusted left and right, so that the steel wire rope is ensured to be tangent to the first pulley (3) and the second pulley (4), and the tangent lines are parallel; the governor base (1) is used for installing a speed governor provided by a customer; the tensioning wheel (21) is provided by a customer and has the same diameter as the speed governor pulley;
the guide shaft is embedded in a guide rail groove of the guide rail bracket (13), so that the tensioning device (2) can move up and down along the guide rail groove; the tensioning device (2) is suspended and lifted off the ground by a steel wire rope which is threaded by a tensioning wheel on the tensioning device, so that the steel wire rope always has a constant tensioning force;
The first pulley (3) and the second pulley (4) are arranged on a support (8), and the support (8) is fixed on a force measuring sensor (9); the force measuring sensor (9) is arranged on the test rack support (7);
The third pulley (5) and the fourth pulley (6) are arranged on one support leg of the test frame leg (112), so that the steel wire rope is ensured to be tangent to the first pulley (3), the second pulley (4), the third pulley (5) and the fourth pulley (6), and the tangent line of the first pulley (3) and the fourth pulley (6) is parallel to the tangent line plumb of the second pulley (4) and the third pulley (5); keeping the vertical height of the third pulley (5) higher than that of the second pulley (4) and the vertical height of the fourth pulley (6) lower than that of the first pulley (3);
The test bed (111) and the horizontal base (113) are composed of rectangles which are equal in size and parallel to each other, and each rectangle is composed of 4 steel frames; the test stand legs are composed of 4 steel frames with the same length and are kept vertical to the ground; four vertexes of the test bed are fixed at the highest points of the test frame legs; four vertexes of the horizontal base are fixed on the four test stand legs and are close to the ground;
The top of the guide rail frame (13) is fixed below the governor base, the other end of the guide rail frame is arranged on the horizontal base, and the mounting hole is a long hole, so that the guide rail frame and the governor base can be synchronously adjusted left and right;
A guide rail groove is embedded in the guide rail frame and used for adjusting the height of the tensioning device.
2. the elevator governor dynamic testing apparatus of claim 1, characterized in that: the governor base (1) comprises a governor mounting base and a pressing plate; the mounting hole of the speed limiter mounting seat is a long hole, so that the center can be conveniently adjusted left and right; the pressing plate is used for fixing the speed limiter, so that the center can be adjusted forwards and backwards conveniently.
3. The elevator governor dynamic testing apparatus of claim 1, characterized in that: and a hoisting lifting lug is arranged between the upper part of the tensioning device and the lower part of the speed limiter mounting seat, so that the tensioning device can be conveniently hoisted for weighing and metering, and the tension of the speed limiter steel wire rope can be conveniently and accurately verified.
4. The elevator governor dynamic testing apparatus of claim 1, characterized in that: the diameters of the first pulley, the second pulley, the third pulley and the fourth pulley are equal, the rope grooves are arc grooves with the diameter of 12mm, and the steel wire ropes with the diameters of 12mm, 10mm, 8mm and 6mm can be guaranteed to be universal.
5. The elevator governor dynamic testing apparatus of claim 1, characterized in that: the first pulley (3) and the second pulley (4) are concentric pulleys and are arranged on the same coaxial support (8); the load cell (9) adopts a bearing seat type load cell.
6. the elevator governor dynamic testing apparatus of claim 1 or 5, characterized in that: the force tested by the force measuring sensor (9) is 2 times of the lifting force of the speed limiter.
7. The elevator governor dynamic testing apparatus of claim 1, characterized in that: the speed measuring sensor (10) is arranged on a fourth pulley shaft, and the fourth pulley and the shaft are fixedly connected through a key; the rotating speed tested by the speed measuring sensor (10) multiplied by the pitch circle diameter of the fourth pulley is the moving linear speed of the steel wire rope.
8. The elevator governor dynamic testing apparatus of claim 1, characterized in that: the steel wire rope is a closed loop rope; the double-rope winch (12) adopts a double-rope winding drum; the double-rope reel is provided with a spiral rope groove, and two end faces are provided with a steel wire rope penetrating hole and a rope head fixing pressing plate hole; the rope end fixing pressing plate hole is in a thread shape and used for installing a fixing pressing plate;
the diameter and length of the double-rope reel are set as follows: after 1.5 circles of safety rings are reserved at the two ends of the winding drum, the rope capacity is not less than 70 m.
9. The elevator governor dynamic testing apparatus of claim 1, characterized in that: the steel wire rope is matched with the speed limiter, and the length of the steel wire rope is about 100 m; one end of the steel wire rope penetrates through the through hole at one end of the winding drum, the other end of the steel wire rope penetrates through all the pulleys of the pulley block and then is fixed to the through hole at the other end of the winding drum, and the rope head of the steel wire rope is fixed to the end face of the winding drum through the pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820713098.9U CN209758776U (en) | 2018-05-14 | 2018-05-14 | dynamic test device for elevator speed limiter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820713098.9U CN209758776U (en) | 2018-05-14 | 2018-05-14 | dynamic test device for elevator speed limiter |
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| CN209758776U true CN209758776U (en) | 2019-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423513A (en) * | 2018-05-14 | 2018-08-21 | 重庆市特种设备检测研究院 | Elevator governor dynamic testing equipment |
| CN113998556A (en) * | 2021-11-24 | 2022-02-01 | 河南大亘计量检测研究院有限公司 | Speed limiter checking method and device calibration equipment and method |
-
2018
- 2018-05-14 CN CN201820713098.9U patent/CN209758776U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423513A (en) * | 2018-05-14 | 2018-08-21 | 重庆市特种设备检测研究院 | Elevator governor dynamic testing equipment |
| CN108423513B (en) * | 2018-05-14 | 2024-01-30 | 重庆市特种设备检测研究院 | Dynamic test device for elevator speed limiter |
| CN113998556A (en) * | 2021-11-24 | 2022-02-01 | 河南大亘计量检测研究院有限公司 | Speed limiter checking method and device calibration equipment and method |
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