CN220502361U - Knapsack type safety tongs system for elevator - Google Patents
Knapsack type safety tongs system for elevator Download PDFInfo
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- CN220502361U CN220502361U CN202321325112.5U CN202321325112U CN220502361U CN 220502361 U CN220502361 U CN 220502361U CN 202321325112 U CN202321325112 U CN 202321325112U CN 220502361 U CN220502361 U CN 220502361U
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- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Abstract
The utility model discloses a safety tongs system for a knapsack elevator, which comprises two safety tongs, a trigger piece, a lifting mechanism and a lock tongue, wherein the two safety tongs are symmetrically arranged on an elevator guide rail, the lifting mechanism comprises a driving rod, a driven rod and two reset tension springs which are arranged on a fixed plate, the middle parts of the driving rod and the driven rod are both pivotally connected with the fixed plate so as to enable the driving rod and the driven rod to swing by taking the middle parts of the driving rod and the driven rod as the center, and meanwhile, the inner ends of the driving rod and the driven rod are pivotally connected so as to form a linkage structure; the outer ends of the two are respectively connected with the safety tongs in a transmission way; the two reset tension springs are vertically arranged at the outer ends of the driving rod and the driven rod respectively, the trigger piece is fixedly connected with the rope end of the elevator steel wire rope and is arranged at the outer end of the driving rod, and the trigger piece is correspondingly arranged with the reset tension springs; the spring bolt sets up in the inner of initiative pole and vertical downwardly extending, and the bottom of spring bolt is provided with electric switch. This scheme sets up flattened lifting mechanism, practices thrift space and safe high-efficient.
Description
Technical Field
The utility model relates to the technical field of elevators, in particular to a knapsack type safety tongs system for an elevator.
Background
The elevator safety tongs system is an important safety device of an elevator, and whether the elevator operates normally or not is related to the operation safety of the elevator, and is related to the life and property safety of personnel. Currently, knapsack type elevators are widely used in their compact lifting structures due to the space limitations of the elevator shaft and the structural requirements of multiple entrances and exits. The safety gear system comprises a safety gear assembly and a lifting mechanism matched with the safety gear assembly, wherein the lifting mechanism of the knapsack type elevator cannot be arranged on the top like a conventional traction elevator, so that the advantages of overlong travel and overlarge structure and the simple structure of the knapsack type elevator are destroyed, and therefore, the safety gear lifting mechanism suitable for the knapsack type elevator is needed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a knapsack type safety tongs system for an elevator.
The aim of the utility model is achieved by the following technical scheme:
the safety tongs system for the knapsack elevator comprises two safety tongs, a trigger piece, a lifting mechanism and a lock tongue, wherein the two safety tongs are symmetrically arranged on elevator guide rails, the lifting mechanism comprises a driving rod, a driven rod and two reset tension springs which are arranged on a fixed plate, the fixed plate is fixedly arranged between the two elevator guide rails, and the middle parts of the driving rod and the driven rod are pivotally connected with the fixed plate so that the driving rod and the driven rod swing by taking the middle parts of the driving rod and the driven rod as the centers, and meanwhile, the inner ends of the driving rod and the driven rod are pivotally connected to form a linkage structure; the outer ends of the two are respectively connected with the safety tongs in a transmission way; the two reset tension springs are vertically arranged at the outer ends of the driving rod and the driven rod respectively, the triggering piece is fixedly connected with the rope head of the elevator steel wire rope and arranged at the outer end of the driving rod, and the triggering piece is correspondingly arranged with the reset tension springs; the lock tongue is arranged at the inner end of the driving rod and extends vertically downwards, and an electric switch is arranged at the bottom of the lock tongue; when the elevator wire rope stops rotating, the rope head is pulled upwards, the outer end of the driving rod is pulled to synchronously move upwards through the trigger piece, at the moment, the outer end of the driven rod also synchronously moves upwards, the two safety tongs are simultaneously triggered to clamp the guide rail, and meanwhile, the inner end of the driving rod synchronously moves downwards and drives the lock tongue to trigger the electric switch to cut off power.
Preferably, the outer ends of the driving rod and the driven rod are fixedly connected with a draw hook, the bottom of the draw hook is inserted into the safety tongs, a wedge block moving along a guide rail on the safety tongs is connected, the distance between the guide rail and the elevator guide rail is gradually reduced from the bottom to the top of the guide rail, and when the draw hook moves to the top of the guide rail, the wedge block clamps the elevator guide rail.
Preferably, the fixed plate is formed by splicing two identical plate surfaces, two ends of the fixed plate are fixedly connected with second fixed plates perpendicular to the fixed plates, and the safety tongs are fixedly arranged on the second fixed plates.
Preferably, a triangular connecting block is arranged at the top of the fixing plate, and the middle parts of the driving rod and the driven rod are in pivot connection with the top of the connecting block.
Preferably, a limiting piece is arranged at the top of two ends of the fixing plate, a waist-shaped hole is formed in the axial direction of the limiting piece, a positioning pin is arranged at the outer ends of the driving rod and the driven rod, and the positioning pin is clamped in the waist-shaped hole and slides along the waist-shaped hole.
Preferably, a fixed block is arranged on the fixed plate, an adjusting screw is vertically screwed on the fixed block, the tail end of the reset tension spring is fixedly connected with the top of the adjusting screw, and the adjusting screw adjusts the tensioning force of the reset tension spring by submitting the screw to the screwed position of the adjusting screw and the fixed block.
The beneficial effects of the utility model are mainly as follows:
1. the flattened structure of the lifting mechanism enables the lifting mechanism to be arranged at the side part of the knapsack type elevator, so that the lifting stroke of the lifting mechanism is avoided, the structure is simplified, and the space waste is reduced;
2. the driving rod and the driven rod are connected through the pivot to form a synchronous swinging linkage structure, so that synchronous control of the driven rod can be completed only by controlling the swinging of the driving rod, the synchronous rate can be conveniently and quickly ensured, and further, the synchronous clamping of safety tongs on two sides is ensured, the safety action of the safety tongs is ensured, and the failure or partial failure of the safety tongs is avoided to cause braking failure;
3. the bottom of the inner end of the driving rod is provided with the lock tongue, the driving rod swings to trigger the safety tongs and simultaneously utilizes the swing structure of the driving rod to trigger the electric switch by the lock tongue, so that the safety tongs realize braking and simultaneously power off the elevator, the braking effect of the elevator is further effectively ensured, and the use safety is ensured.
Drawings
The technical scheme of the utility model is further described below with reference to the accompanying drawings:
fig. 1: schematic diagrams of embodiments of the present utility model;
fig. 2: a schematic view of another angle of an embodiment of the present utility model;
fig. 3: an enlarged schematic view of portion a in fig. 2;
fig. 4: the embodiment of the utility model is partially structurally schematic.
Detailed Description
The present utility model will be described in detail below with reference to specific embodiments shown in the drawings. The embodiments are not limited to the present utility model, and structural, methodological, or functional modifications of the utility model from those skilled in the art are included within the scope of the utility model.
In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the scheme, the direction approaching the operator is the near end, and the direction separating from the operator is the far end, with reference to the operator.
As shown in fig. 1 to 4, the utility model discloses a backpack type safety gear system for an elevator, which comprises two safety gears 1, a trigger piece 2, a lifting mechanism and a lock tongue 3, wherein the two safety gears 1 are symmetrically arranged on an elevator guide rail 4, the lifting mechanism comprises a driving rod 5, a driven rod 6 and two reset tension springs 7 which are arranged on a fixed plate 9, the fixed plate 9 is fixedly arranged between the two elevator guide rails 4, and the middle parts of the driving rod 5 and the driven rod 6 are pivotally connected with the fixed plate 9 to enable the driving rod 5 and the driven rod 6 to swing by taking the middle parts as the center, and meanwhile, the inner ends of the driving rod 5 and the driven rod 6 are pivotally connected to form a linkage structure; the outer ends of the two are respectively connected with the safety tongs 1 in a transmission way; the two reset tension springs 7 are vertically arranged at the outer ends of the driving rod 5 and the driven rod 6 respectively, the trigger piece 2 is fixedly connected with the rope head 10 of the elevator steel wire rope and is arranged at the outer end of the driving rod 5, and the trigger piece 2 and the reset tension springs 7 are correspondingly arranged; the lock tongue 3 is arranged at the inner end of the driving rod 5 and extends vertically downwards, and an electric switch 11 is arranged at the bottom of the lock tongue 3; when the elevator wire rope stops rotating, the rope head 10 is pulled upwards, the outer end of the driving rod 5 is pulled to synchronously move upwards through the triggering piece 2, at the moment, the outer end of the driven rod 6 is synchronously moved upwards, the two safety tongs 1 are simultaneously triggered to clamp the guide rail 4, and meanwhile, the inner end of the driving rod 5 is synchronously moved downwards, and the lock tongue 3 is driven to trigger the electric switch 11 to cut off power.
According to the scheme, the driving rod 5 and the driven rod 6 are in pivot connection to form a synchronous swinging linkage structure, so that synchronous control of the driven rod 6 can be completed only by controlling swinging of the driving rod 5, the synchronous rate can be conveniently and rapidly ensured, synchronous clamping of the safety tongs 1 on two sides is further ensured, the safety action of the safety tongs 1 is ensured, and failure or partial failure of the safety tongs is avoided, so that braking failure is caused. Simultaneously, set up spring bolt 3 in the inner bottom of initiative pole 5 utilizes its oscillating structure when initiative pole 5 swings trigger safety tongs 1, makes it utilize spring bolt 3 to trigger electric switch 11 simultaneously for safety tongs 1 makes the elevator outage when realizing braking, further effectively guarantees the braking effect of elevator, guarantees safe in utilization.
Further, the flattened structure of the lifting mechanism can be arranged at the side part of the knapsack type elevator, so that the lifting of the lifting mechanism is avoided, the stroke is increased, the structure is simplified, and the space waste is reduced.
Specifically, as shown in fig. 4, the outer ends of the driving rod 5 and the driven rod 6 are fixedly connected with a draw hook 8, the bottom of the draw hook 8 is inserted into the safety tongs 1 and is connected with a wedge block (not shown in the figure) moving along a guide rail 101 on the safety tongs 1, the bottom of the draw hook 8 is fixedly connected with the wedge block into a whole through a bolt, the bolt penetrates through the guide rail 101 and moves along the outline of the guide rail 101, wherein the wedge block is a locking block for locking the elevator guide rail 4, and is of an existing structure, and details are omitted here. The distance between the guide rail 101 and the elevator guide rail 4 is gradually reduced from the bottom to the top so that the wedge-shaped block is gradually tightly matched with the elevator guide rail 4 in the pulling-up process of the drag hook 8, and when the drag hook 8 moves to the top of the guide rail 101, the wedge-shaped block clamps the elevator guide rail 4.
Further, for convenience in assembly and maintenance, the fixing plate 9 is formed by splicing two identical plate surfaces, two ends of the fixing plate 9 are fixedly connected with second fixing plates 12 perpendicular to the fixing plates, and the safety tongs 1 are fixedly arranged on the second fixing plates 12.
In the preferred embodiment, the top of the fixing plate 9 is provided with a triangular connection block 901, and the triangular structure of the connection block 901 is beneficial to providing stable supporting force for the driving rod 5 and the driven rod 6, and of course, in other possible embodiments, the connection block 901 may be in other possible shapes. The middle parts of the driving rod 5 and the driven rod 6 are pivotally connected with the top of the connecting block 901 to form a structure swinging left and right relative to the connecting block 901.
Further, a limiting piece 902 is disposed at the top of two ends of the fixing plate 1, a waist-shaped hole 9021 is axially disposed in the limiting piece 902, a positioning pin 13 is disposed at the outer ends of the driving rod 5 and the driven rod 6, and the positioning pin 13 is clamped in the waist-shaped hole 9021 and slides along the waist-shaped hole 9021. The limiting piece 902 may further limit the swing amplitude and the swing track of the driving rod 5 and the driven rod 6, so that the swing of the driving rod 5 and the driven rod 6 is more stable.
As shown in fig. 2, the fixing plate 9 is provided with a fixing block 903, an adjusting screw 14 is vertically screwed on the fixing block 903, the tail end of the restoring tension spring 7 is fixedly connected with the top of the adjusting screw 14, and the adjusting screw 14 adjusts the tension of the restoring tension spring 7 by submitting the screwed position of the adjusting screw with the fixing block 903. The setting of the adjusting screw 14 can be used for quickly adjusting the tension force of the reset tension spring 7 to ensure that the reset tension spring 7 has enough tension force in the use process, thereby reducing the maintenance cost.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.
Claims (6)
1. Knapsack formula safety tongs system for elevator, its characterized in that: the elevator safety device comprises two safety tongs, a trigger piece (2), a lifting mechanism and a lock tongue (3), wherein the two safety tongs are symmetrically arranged on elevator guide rails, the lifting mechanism comprises a driving rod (5), a driven rod (6) and two reset tension springs (7) which are arranged on a fixed plate, the fixed plate is fixedly arranged between the two elevator guide rails, the middle parts of the driving rod (5) and the driven rod (6) are pivotally connected with the fixed plate to enable the driving rod (5) and the driven rod (6) to swing by taking the middle parts as the center, and meanwhile, the inner ends of the driving rod (5) and the driven rod (6) are pivotally connected to form a linkage structure; the outer ends of the two are respectively connected with the safety tongs in a transmission way; the two reset tension springs (7) are vertically arranged at the outer ends of the driving rod (5) and the driven rod (6) respectively, the trigger piece (2) is fixedly connected with the rope head (10) of the elevator steel wire rope and is arranged at the outer end of the driving rod (5), and the trigger piece (2) and the reset tension springs (7) are correspondingly arranged; the lock tongue (3) is arranged at the inner end of the driving rod (5) and extends vertically downwards, and an electric switch (11) is arranged at the bottom of the lock tongue (3); after the elevator wire rope stops rotating, the rope head (10) is pulled upwards, the outer end of the driving rod (5) is pulled to synchronously move upwards through the trigger piece (2), at the moment, the outer end of the driven rod (6) also synchronously moves upwards, the two safety tongs are simultaneously triggered to clamp the guide rail, and meanwhile, the inner end of the driving rod (5) synchronously moves downwards, and the lock tongue (3) is driven to trigger the electric switch (11) to cut off power.
2. The backpack type safety tongs system for an elevator according to claim 1, wherein: the outer end rigid coupling of initiative pole (5) and driven lever (6) has a drag hook (8), the bottom of drag hook (8) is inserted and is located in the safety tongs, and be connected with along the wedge that the guide rail on the safety tongs removed, the guide rail with interval between the elevator guide rail is from its bottom to its top dwindle gradually, works as drag hook (8) remove to the top of guide rail, the wedge presss from both sides tightly the elevator guide rail.
3. The backpack type safety gear system for an elevator according to claim 2, wherein: the fixed plate is formed by splicing two identical plate surfaces, two ends of the fixed plate are fixedly connected with second fixed plates (12) perpendicular to the fixed plates, and the safety tongs are fixedly arranged on the second fixed plates (12).
4. The backpack type safety gear system for an elevator according to claim 2, wherein: the top of fixed plate is provided with triangle-shaped connecting block (901), the middle part of initiative pole (5), driven lever (6) with the top pivot connection of connecting block (901).
5. The backpack type safety gear system for an elevator according to claim 2, wherein: the two ends top of fixed plate is provided with a spacing piece (902), the axial of spacing piece (902) is provided with a waist type hole (9021), be provided with a locating pin (13) on the outer end of initiative pole (5) and driven pole (6), locating pin (13) card is located in waist type hole (9021) and follow its slip.
6. The backpack type safety gear system for an elevator according to claim 2, wherein: the fixing plate is provided with a fixing block (903), an adjusting screw (14) is vertically screwed on the fixing block (903), the tail end of the reset tension spring (7) is fixedly connected with the top of the adjusting screw (14), and the tensioning force of the reset tension spring (7) is adjusted by submitting the screw connection position of the adjusting screw (14) and the fixing block (903).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325112.5U CN220502361U (en) | 2023-05-29 | 2023-05-29 | Knapsack type safety tongs system for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325112.5U CN220502361U (en) | 2023-05-29 | 2023-05-29 | Knapsack type safety tongs system for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220502361U true CN220502361U (en) | 2024-02-20 |
Family
ID=89870059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321325112.5U Active CN220502361U (en) | 2023-05-29 | 2023-05-29 | Knapsack type safety tongs system for elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220502361U (en) |
-
2023
- 2023-05-29 CN CN202321325112.5U patent/CN220502361U/en active Active
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