CN219859977U - Structure for triggering elevator speed limiter - Google Patents
Structure for triggering elevator speed limiter Download PDFInfo
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- CN219859977U CN219859977U CN202321306335.7U CN202321306335U CN219859977U CN 219859977 U CN219859977 U CN 219859977U CN 202321306335 U CN202321306335 U CN 202321306335U CN 219859977 U CN219859977 U CN 219859977U
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- speed limiter
- trigger
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- triggering
- pressing plate
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- 238000003825 pressing Methods 0.000 claims abstract description 55
- 238000010009 beating Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model discloses a structure for triggering an elevator speed limiter, which comprises a speed limiter housing, a speed limiter wheel, a ratchet wheel, a pawl, a pressing plate, a triggering beating plate, a driving device, a guide piece, a triggering rod and a first reset piece, wherein the speed limiter housing is provided with a first reset piece; the driving device and the guide piece are arranged on the speed limiter housing and are positioned on the same side of the trigger beating plate; the guide piece is rotationally assembled on the speed limiter housing, and one end of the trigger rod is connected with the guide piece; the driving end of the driving device faces the guide piece and is used for driving the guide piece to enable the trigger rod to extend outwards and collide with the trigger plate so that the pawl contacts with the ratchet wheel; the first reset piece is arranged between the speed limiter housing and the trigger rod. The elevator speed limiter triggering device is convenient to install, simple in structure, low in processing and manufacturing difficulty and low in cost, and when the elevator speed does not exceed the rated speed, the elevator speed limiter can be actively triggered, so that elevator braking is realized, an operator does not contact with a moving part when operating the elevator speed limiter triggering device, and safety is high.
Description
Technical Field
The utility model relates to the field of elevator braking devices, in particular to a structure for triggering an elevator speed limiter.
Background
The speed limiter device is an essential safety element of an elevator, and is a device that stops the elevator when the elevator reaches a predetermined speed and can actuate a safety gear if necessary. The national standard GB/T7588-2003,9.9.8.3 specifies that "the requirements of 9.9.8.2 need not be met when the following conditions are all met: a) The governor action of 9.9.9 can be accomplished remotely (except wirelessly) from outside the hoistway, in a manner that does not result in unintended movement of the governor and that is not accessible to an unauthorized person. Because of the requirements of the national standard and the appearance of the elevator without machine room, the speed limiter is arranged in the hoistway, and when the speed limiter of the elevator does not exceed the rated speed, if checking check or testing the reliability of the braking device is required, an maintainer is required to manually operate the speed limiter and the switch at the top of the elevator car, or an inspection door is independently arranged in the elevator car to operate the speed limiter and the switch, so that great inconvenience is brought to annual inspection or maintenance of the elevator without machine room.
In the prior art, in order to meet remote control requirements, an elevator speed limiter is provided with a complex structure, so that production cost is high, and strength is poor.
Disclosure of Invention
The utility model aims to provide a structure for triggering an elevator speed limiter, which aims to solve the problems of complex structure and high production cost of the speed limiter capable of being actively triggered.
To achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a structure for triggering an elevator speed limiter, which comprises a speed limiter housing, a speed limiter wheel, a ratchet wheel, a pawl, a pressing plate, a triggering beating plate, a driving device, a guide piece, a triggering rod and a first reset piece, wherein the speed limiter housing is provided with a first reset piece;
the speed limiter wheel is connected to the speed limiter housing in a rotating way, and the ratchet wheel is coaxially arranged on one side of the speed limiter wheel; the pawl comprises a pawl body, a brake lug, a boss and a second reset piece; the braking lug is arranged on the front side of the pawl body, and the boss is arranged on the rear side of the pawl body; the pawl body is rotatably arranged on the speed limiter wheel, and the second reset piece is arranged between the side wall of the braking lug and the speed limiter wheel, so that the braking lug has a tendency of contacting with the side wall of the ratchet wheel; the pressing plate is rotationally assembled at the rear side of the pawl, and the pressing plate is tightly abutted against the boss through a torsion spring, so that the braking lug is far away from the ratchet wheel; the trigger beating plate is connected with the pressing plate; the front side of the pressing plate is provided with an inward concave sliding cambered surface matched with the boss;
the driving device and the guide piece are arranged on the speed limiter housing and are positioned on the same side of the trigger plate; the guide piece is rotationally assembled on the speed limiter housing, and one end of the trigger rod is connected with the guide piece; the driving end of the driving device faces the guide piece and is used for driving the guide piece to enable the trigger rod to extend outwards and collide with the trigger plate so that the pawl is in contact with the ratchet wheel;
the first reset piece is arranged between the speed limiter housing and the trigger rod, and when the trigger rod has no external force, the distance between the other end of the trigger rod and the center point of the ratchet wheel is smaller than the maximum radius of the ratchet wheel.
In the structure for triggering the elevator speed limiter, a rotating shaft is arranged between the guide piece and the triggering rod, the rotating shaft is rotationally connected to the side wall of the speed limiter housing, the guide piece is assembled at one end of the rotating shaft, which is positioned at the outer side of the speed limiter housing, and the triggering rod is assembled at one end of the rotating shaft, which is positioned at the inner side of the speed limiter housing.
In the structure for triggering the elevator speed limiter, the guide piece comprises a connecting plate and a stress plate; the connecting plate and the stress plate are connected with each other and are L-shaped; the upper end of the connecting plate is connected with the rotating shaft; the stress plate is positioned on one side of the connecting plate, which is opposite to the speed limiter housing, and the position of the stress plate is matched with the driving end of the driving device.
In the structure for triggering the elevator speed limiter, the pressing plate comprises a pressing plate shaft, a clamping hook, a connecting pressing plate and a torsion spring, wherein the pressing plate shaft is rotationally assembled on the speed limiter wheel, the torsion spring is arranged at one end of the pressing plate shaft, which is opposite to the ratchet wheel, and the clamping hook is arranged at the other end of the pressing plate shaft; the tail end of the clamping hook is tightly abutted against the boss, so that the braking convex block is far away from the ratchet wheel; the connecting pressing plate is connected to the rear side of the clamping hook and is connected with the triggering beating plate; the sliding cambered surface is positioned on the front side surface of the clamping hook.
In the structure for triggering the elevator speed limiter, the triggering plate comprises a connecting arm and a triggering lug; one end of the connecting arm is connected with the connecting pressing plate, the other end of the connecting arm extends to the outer side, and the trigger lug is arranged on the connecting arm; the outside of trigger lever is equipped with the outwards outstanding trigger cambered surface, when the trigger lever outwards stretches out, the trigger lever is through jack-up cambered surface trigger the lug and stir the clamp plate.
In the structure for triggering the elevator speed limiter, the first reset piece is a spring, one end of the first reset piece is connected to the side wall of the speed limiter housing, and the other end of the second reset piece is connected to the trigger rod.
In the structure for triggering the elevator speed limiter, the second reset piece is a spring, one end of the second reset piece is connected to the side wall of the braking lug, and the other end of the second reset piece is connected to the speed limiter wheel.
One technical scheme of the utility model has the following beneficial effects:
the elevator speed limiter triggering device is convenient to install, simple in structure, low in processing and manufacturing difficulty and low in cost, and when the elevator speed does not exceed the rated speed, the elevator speed limiter can be actively triggered, so that elevator braking is realized, an operator does not contact with a moving part when operating the elevator speed limiter triggering device, and safety is high.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present utility model;
FIG. 2 is a schematic diagram of the internal structure of one embodiment of the present utility model;
FIG. 3 is a schematic illustration of the connection of a pawl, a platen, and a trigger pad in one embodiment of the present utility model;
FIG. 4 is a schematic illustration of the connection of a guide and trigger lever in one embodiment of the present utility model;
in the accompanying drawings: the speed limiter comprises a speed limiter housing 1, a speed limiter wheel 2, a ratchet wheel 3, a pawl 4, a pressing plate 5, a trigger plate 6, a driving device 7, a guide piece 8, a trigger rod 9 and a first reset piece 101; a rotation shaft 102;
pawl body 41, brake tab 42, boss 43, second reset member 44; a pressing plate shaft 51, a clamping hook 52 and a connecting pressing plate 53; a connecting arm 61 and a trigger bump 62; a connecting plate 81 and a stress plate 82.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 4, the present utility model provides a structure for triggering an elevator speed limiter, comprising a speed limiter housing 1, a speed limiter wheel 2, a ratchet wheel 3, a pawl 4, a pressing plate 5, a triggering plate 6, a driving device 7, a guide member 8, a triggering lever 9 and a first reset member 101;
the speed limiter wheel 2 is rotatably connected to the speed limiter housing 1, and the ratchet wheel 3 is coaxially arranged on one side of the speed limiter wheel 2; the pawl 4 comprises a pawl body 41, a brake projection 42, a boss 43 and a second reset member 44; the braking lug 42 is arranged on the front side of the pawl body 41, and the boss 43 is arranged on the rear side of the pawl body 41; the pawl body 41 is rotatably arranged on the speed limiter wheel 2, and the second reset piece 44 is arranged between the side wall of the braking lug 42 and the speed limiter wheel 2, so that the braking lug 42 has a tendency to contact with the side wall of the ratchet wheel 3; the pressing plate 5 is rotatably assembled on the rear side of the pawl 4, and the pressing plate 5 is tightly abutted against the boss 43 through a torsion spring, so that the braking lug 42 is far away from the ratchet wheel 3; the trigger beating plate 6 is connected with the pressing plate 5; the front side of the pressing plate 5 is provided with an inward concave sliding cambered surface matched with the boss 43;
the driving device 7 and the guide piece 8 are arranged on the speed limiter housing 1 and are positioned on the same side of the trigger plate 6; the guide piece 8 is rotatably assembled on the speed limiter housing 1, and one end of the trigger rod 9 is connected with the guide piece 8; the driving end of the driving device 7 faces the guide piece 8 and is used for driving the guide piece 8 to enable the trigger rod 9 to extend outwards and collide with the trigger plate 6 so that the pawl 4 is in contact with the ratchet wheel 3;
the first reset piece 101 is arranged between the speed limiter housing 1 and the trigger rod 9, and when the trigger rod 9 has no external force, the distance between the other end of the trigger rod 9 and the center point of the ratchet wheel 3 is smaller than the maximum radius of the ratchet wheel 3.
The elevator speed limiter triggering device is convenient to install, simple in structure, low in processing and manufacturing difficulty and low in cost, and when the elevator speed does not exceed the rated speed, the elevator speed limiter can be actively triggered, so that elevator braking is realized, an operator does not contact with a moving part when operating the elevator speed limiter triggering device, and safety is high.
The second restoring member 44 is disposed between the side wall of the braking bump 42 and the speed limiter wheel 2, so that the braking bump 42 has a tendency to contact with the side wall of the ratchet wheel 3, but the pressing plate 5 is tightly abutted against the boss 43 by the torsion spring, so that the braking bump 42 cannot contact with the ratchet wheel 3. Referring to fig. 2, during normal operation of the elevator, the speed limiter wheel 2 drives the pawl 4, the pressing plate 5 and the trigger plate 6 to rotate counterclockwise, and the ratchet 3 is fixed to the speed limiter housing 1.
When braking is required to be actively triggered, the driving end of the driving device 7 extends outwards, so that the guide piece 8 rotates, and the driving device 7 drives the trigger rod 9 to extend outwards through the guide piece 8; when the trigger lever 9 is extended, the distance between the other end of the trigger lever 9 and the center point of the ratchet wheel 3 is smaller than the maximum radius of the ratchet wheel 3, so that the speed limiter wheel 2 triggers the striking plate 6 to collide with the trigger lever 9 in the rotation process. Referring to fig. 2, after the trigger plate 6 collides with the trigger rod 9, the trigger plate 6 is lifted up by the trigger rod 9, so that the trigger plate 6 drives the pressing plate 5 to rotate anticlockwise, and the pressing plate 5 is far away from the boss 43; after the boss 43 loses the blocking of the pressing plate 5, the second reset piece 44 drives the pawl 4 to rotate anticlockwise, so that the braking lug 42 is clamped on the ratchet wheel 3; when the brake lug 42 is clamped on the ratchet wheel 3, the speed limiter wheel 2 cannot continue to rotate anticlockwise, so that the safety gear is triggered to act, and further the elevator is braked. Subsequently, the driving end of the driving device 7 is reset, referring to fig. 2, after the guide member 8 loses the support of the driving device 7, the first reset member 101 drives the trigger lever 9 to rotate counterclockwise, so as to reset the trigger lever 9.
When the braking is required to be released, the driving end of the driving device 7 extends outwards, so that the guide piece 8 rotates, the speed limiter wheel 2 rotates clockwise by taking fig. 2 and 3 as references, in the rotating process, the braking lug 42 collides with the trigger rod 9 and jacks up the braking lug 42, at the moment, the braking lug 42 rotates clockwise by taking the rotating shaft of the pawl body 41 as the circle center to drive the boss 43 to rotate clockwise, the sliding cambered surface is arranged on the front side of the pressing plate 5, the boss 43 slides along the sliding cambered surface, finally the boss 43 is lower than the pressing plate 5, the pressing plate 5 abuts against the boss 43 again, the tail end of the clamping hook 52 abuts against the boss 43, reset can be completed, the speed limiter wheel 2 can rotate normally, and therefore the elevator can operate normally. With the above structure, the resetting process of the boss 43 and the hook 52 is smoother, and interference and blocking are avoided.
Specifically, a rotating shaft 102 is arranged between the guide member 8 and the trigger lever 9, the rotating shaft 102 is rotatably connected to the side wall of the speed limiter housing 1, the guide member 8 is assembled at one end of the rotating shaft 102 located at the outer side of the speed limiter housing 1, and the trigger lever 9 is assembled at one end of the rotating shaft 102 located at the inner side of the speed limiter housing 1.
The guide piece 8 and the trigger rod 9 are in driving connection through the rotating shaft 102, and the structure is reliable and stable and is not easy to loosen. When the driving device 7 pushes the guide piece 8, the trigger rod 9 can synchronously rotate, the action is rapid, the trigger rod 9 can be rapidly extended, and the elevator brake is realized.
Specifically, the guide 8 includes a connecting plate 81 and a force receiving plate 82; the connecting plate 81 and the stress plate 82 are connected with each other and are L-shaped; the upper end of the connecting plate 81 is connected with a rotating shaft 102; the force-bearing plate 82 is located on one side of the connecting plate 81, which is away from the speed limiter housing 1, and the position of the force-bearing plate 82 is matched with the driving end of the driving device 7.
The force plate 82 provides an impetus for the driving end of the driving device 7, so that the driving device 7 can push the guide piece 8 conveniently. The L-shaped structure is stable and reliable, and is easy to install and produce.
Further, the pressing plate 5 comprises a pressing plate shaft 51, a clamping hook 52, a connecting pressing plate 53 and a torsion spring, wherein the pressing plate shaft 51 is rotatably assembled on the speed limiter wheel 2, the torsion spring is arranged at one end of the pressing plate shaft 51, which is opposite to the ratchet wheel 3, and the clamping hook 52 is arranged at the other end of the pressing plate shaft 51; the tail end of the hook 52 is tightly abutted against the boss 43, so that the brake lug 42 is far away from the ratchet wheel 3; the connecting pressing plate 53 is connected to the rear side of the hook 52, and the connecting pressing plate 53 is connected with the trigger beating plate 6; the sliding cambered surface is positioned on the front side surface of the clamping hook 52.
With the structure, the pressing plate 5 can be tightly abutted against the boss 43, and the structure is simple and easy to install. Referring to fig. 2 and 3, when the speed limiter wheel 2 rotates clockwise, during the rotation process, the braking bump 42 collides with the trigger lever 9 and lifts up the braking bump 42, the braking bump 42 rotates clockwise with the rotation axis of the pawl body 41 as the center of a circle, and the boss 43 is driven to rotate clockwise; since the inward concave side of the hook 52 faces the boss 43, the boss 43 slides along the sliding arc surface, and finally the end of the hook 52 abuts against the boss 43. With the above structure, the resetting process of the boss 43 and the hook 52 is smoother, and interference and blocking are avoided.
Further, the trigger pad 6 includes a connection arm 61 and a trigger bump 62; one end of the connecting arm 61 is connected with the connecting pressing plate 53, the other end of the connecting arm 61 extends to the outer side, and the triggering lug 62 is arranged on the connecting arm 61; the outside of trigger lever 9 is equipped with the outside outstanding trigger cambered surface, when trigger lever 9 outwards stretches out, trigger lever 9 stirs through the jack-up cambered surface trigger lug 62 clamp plate 5.
The trigger lug 62 is used for contacting with the trigger rod 9, the connecting arm 61 stretches the trigger lug 62 to one side of the trigger rod 9, and as the trigger lug 62 rotates along with the speed limiter wheel 2, when the trigger rod 9 stretches out, the trigger lug 62 collides with the trigger rod 9, and then the trigger rod 9 jacks up the trigger lug 62, so that the connecting arm 61 is driven, the trigger beating plate 6 drives the pressing plate 5, and the purpose of clamping the pawl 4 on the ratchet wheel 3 is achieved. The outwards protruding cambered surface in the outside of the trigger rod 9 is matched with the trigger lug 62, when the trigger rod 9 is contacted with the trigger lug 62, the trigger lug 62 slides along the cambered surface of the trigger rod 9, so that the pressing plate 5 is driven to rotate anticlockwise.
Specifically, the first restoring member 101 is a spring, one end of the first restoring member 101 is connected to a side wall of the speed limiter housing 1, and the other end of the second restoring member 44 is connected to the trigger lever 9.
In one embodiment of the present utility model, the first restoring member 101 is a spring, which has a simple structure and is convenient to install and produce.
Specifically, the second restoring member 44 is a spring, one end of the second restoring member 44 is connected to a side wall of the braking bump 42, and the other end of the second restoring member 44 is connected to the speed limiter wheel 2.
In one embodiment of the present utility model, the second restoring member 44 is a spring, which is simple in structure and convenient to install and produce.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art from consideration of this specification without the exercise of inventive faculty, and such equivalent modifications and alternatives are intended to be included within the scope of the utility model as defined in the claims.
Claims (7)
1. The structure for triggering the elevator speed limiter is characterized by comprising a speed limiter housing, a speed limiter wheel, a ratchet wheel, a pawl, a pressing plate, a triggering beating plate, a driving device, a guide piece, a triggering rod and a first reset piece;
the speed limiter wheel is connected to the speed limiter housing in a rotating way, and the ratchet wheel is coaxially arranged on one side of the speed limiter wheel; the pawl comprises a pawl body, a brake lug, a boss and a second reset piece; the braking lug is arranged on the front side of the pawl body, and the boss is arranged on the rear side of the pawl body; the pawl body is rotatably arranged on the speed limiter wheel, and the second reset piece is arranged between the side wall of the braking lug and the speed limiter wheel, so that the braking lug has a tendency of contacting with the side wall of the ratchet wheel; the pressing plate is rotationally assembled at the rear side of the pawl, and the pressing plate is tightly abutted against the boss through a torsion spring, so that the braking lug is far away from the ratchet wheel; the trigger beating plate is connected with the pressing plate; the front side of the pressing plate is provided with an inward concave sliding cambered surface matched with the boss;
the driving device and the guide piece are arranged on the speed limiter housing and are positioned on the same side of the trigger plate; the guide piece is rotationally assembled on the speed limiter housing, and one end of the trigger rod is connected with the guide piece; the driving end of the driving device faces the guide piece and is used for driving the guide piece to enable the trigger rod to extend outwards and collide with the trigger plate so that the pawl is in contact with the ratchet wheel;
the first reset piece is arranged between the speed limiter housing and the trigger rod, and when the trigger rod has no external force, the distance between the other end of the trigger rod and the center point of the ratchet wheel is smaller than the maximum radius of the ratchet wheel.
2. The structure for triggering an elevator governor according to claim 1, wherein a rotating shaft is provided between the guide member and the trigger lever, the rotating shaft is rotatably connected to a side wall of the governor housing, the guide member is fitted to an end of the rotating shaft located outside the governor housing, and the trigger lever is fitted to an end of the rotating shaft located inside the governor housing.
3. A structure for triggering an elevator governor according to claim 2, wherein the guide comprises a connecting plate and a force plate; the connecting plate and the stress plate are connected with each other and are L-shaped; the upper end of the connecting plate is connected with the rotating shaft; the stress plate is positioned on one side of the connecting plate, which is opposite to the speed limiter housing, and the position of the stress plate is matched with the driving end of the driving device.
4. The structure for triggering an elevator speed limiter according to claim 1, wherein the pressing plate comprises a pressing plate shaft, a clamping hook, a connecting pressing plate and a torsion spring, the pressing plate shaft is rotatably assembled on the speed limiter wheel, the torsion spring is arranged at one end of the pressing plate shaft, which is opposite to the ratchet wheel, and the clamping hook is arranged at the other end of the pressing plate shaft; the tail end of the clamping hook is tightly abutted against the boss, so that the braking convex block is far away from the ratchet wheel; the connecting pressing plate is connected to the rear side of the clamping hook and is connected with the triggering beating plate; the sliding cambered surface is positioned on the front side surface of the clamping hook.
5. The structure for triggering an elevator governor of claim 4, wherein the trigger pad includes a connecting arm and a trigger tab; one end of the connecting arm is connected with the connecting pressing plate, the other end of the connecting arm extends to the outer side, and the trigger lug is arranged on the connecting arm; the outside of trigger lever is equipped with the outwards outstanding trigger cambered surface, when the trigger lever outwards stretches out, the trigger lever is through jack-up cambered surface trigger the lug and stir the clamp plate.
6. The structure for triggering an elevator governor of claim 1, wherein the first return member is a spring, one end of the first return member is connected to a side wall of the governor housing, and the other end of the second return member is connected to the trigger lever.
7. The structure for triggering an elevator governor of claim 1, wherein the second return member is a spring, one end of the second return member is connected to a side wall of the braking bump, and the other end of the second return member is connected to the governor wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321306335.7U CN219859977U (en) | 2023-05-26 | 2023-05-26 | Structure for triggering elevator speed limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321306335.7U CN219859977U (en) | 2023-05-26 | 2023-05-26 | Structure for triggering elevator speed limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219859977U true CN219859977U (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321306335.7U Active CN219859977U (en) | 2023-05-26 | 2023-05-26 | Structure for triggering elevator speed limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219859977U (en) |
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2023
- 2023-05-26 CN CN202321306335.7U patent/CN219859977U/en active Active
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