CN213679345U

CN213679345U - Safety tongs triggering structure of household elevator without pit

Info

Publication number: CN213679345U
Application number: CN202022577534.4U
Authority: CN
Inventors: 李长明; 朱小云; 车超超; 丁明芳; 李少弘; 焦玉
Original assignee: Shandong Bunse Elevator Co ltd
Current assignee: Shandong Bunse Elevator Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-07-13
Anticipated expiration: 2030-11-09

Abstract

The safety gear triggering structure is characterized in that reversing pulleys are arranged at two ends of an elastic plate, so that two ends of the elastic plate upwards have a section of displacement through the tensile force of a cable when an elevator normally works, when the cable is broken, the elastic plate does not move downwards under the upward tensile force of the cable any more, a triggering assembly located below the elastic plate is triggered, and a locking assembly is triggered by the triggering assembly to switch states, so that a lift car is rapidly braked; locking subassembly adopts the eccentric wheel to brake, the eccentric wheel need not to remove, only need rotate and can accomplish the conversion of first state and second state, braking time reduces to some extent, braking distance shortens thereupon, the car has been avoided, passenger in the car leads to accident and damage because of the hawser fracture suddenly the tenesmus, state after restricting absolutely to the elevator has protected, greatly reduced the injury degree to the inside passenger of car, the while has also increased the stationarity and the security of elevator.

Description

Safety tongs triggering structure of household elevator without pit

Technical Field

The utility model relates to a no pit home use elevator technical field especially relates to no pit home use elevator's safety tongs trigger structure.

Background

With the continuous improvement of economic level and the continuous promotion of urbanization and urbanization, the residential form of people develops towards the trend of high-rise buildings and villas. In the construction process of high-rise buildings, elevator shafts can be designed independently, most of the elevators adopt traction type elevators, the elevator shafts have relatively perfect and independent control and operation systems, and the development and application of related technologies are relatively mature; in the low-rise buildings such as villas, the floor height of the villas is generally designed into two or three layers, elevators cannot be designed in most villas, and the whole set of traction type elevators is complex in structure and needs to be provided with a hoistway, so that a large space is occupied, the elevator cannot be installed in most villas in consideration of the problem of space occupation and the cost of the traction type elevators, but in recent years, along with the increase of the aging problem of the population of China, the old people living in the villas and going upstairs and downstairs by stairs are inconvenient, and potential safety hazards exist, so that the market demand for small-sized bottomless household elevators is more and more urgent.

In the prior art, small and medium-sized domestic elevators without pits are generally provided with a vertical guide rail without a shaft between floors, and a driving device of the domestic elevator without pits moves along with a car of the domestic elevator without pits. Specifically, a motor is used for driving a winding drum to wind and unwind two mooring ropes wound on two pulleys to realize the lifting of the household elevator without the pit.

In the use of no pit home use elevator, the unexpected condition of hawser disconnection can take place sometimes, at this moment just need arresting gear to carry out effective, timely braking to the car, usually react to the difference of atress behind the hawser fracture through a structure, thereby trigger safety tongs and brake the car, but safety tongs among the prior art adopts the gyro wheel extrusion formula usually, trigger safety tongs promptly and make the gyro wheel upwards walk a section distance so that extrude the guide rail, make the car stop, but because the gyro wheel will go up a section distance of walking, therefore the time of this section distance of walking of gyro wheel used has increased the braking time of safety tongs, braking distance also lengthens along with it, and the braking distance overlength of no pit home use elevator in the low-rise building can lead to the security greatly reduced of elevator.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a locking subassembly in safety tongs trigger structure of no pit home use elevator adopts the eccentric wheel to brake, the eccentric wheel need not to remove, only need rotate and can accomplish the conversion of first state and second state, braking time reduces to some extent, braking distance shortens thereupon, the car has been avoided, passenger in the car leads to accident and damage because of the hawser fracture suddenly tenesmus, the state after the elevator rope breaking has been protected, greatly reduced the injury degree to the inside passenger of car, the while has also increased the stationarity and the security of elevator.

In order to realize the purpose, the utility model provides a safety tongs triggering structure of a household elevator without a pit, which comprises an elastic plate, wherein the middle part of the elastic plate is connected with the top of an elevator car; the lifting assembly comprises two reversing pulleys arranged at the two ends of the elastic plate respectively, a reel and a cable wound on the reel, the cable extends upwards after reversing from the reversing pulleys, and the cable applies an upward force to the end part of the elastic plate by the reversing pulleys so as to enable the elastic plate to be bent and deformed, and the two ends of the elastic plate move upwards; the two locking assemblies are respectively arranged at two ends of the elastic plate and comprise eccentric wheels, and the eccentric wheels have a first state of stopping the movement of the lift car and a second state of releasing the movement of the lift car; the two trigger assemblies are respectively arranged at two ends of the elastic plate and comprise a fixed part, a rotating part and a trigger part hinged with the rotating part, the fixed part is fixedly arranged on the lift car, the rotating part is rotatably arranged on the fixed part, and the rotating part is positioned below the end part of the elastic plate; when the end part of the elastic plate moves downwards and exceeds a set threshold value, the elastic plate can trigger the rotating piece to rotate, so that the trigger piece is driven to trigger the eccentric wheel to be switched from the second state to the first state. The safety gear triggering structure has the advantages that the reversing pulleys are arranged at the two ends of the elastic plate, so that the two ends of the elastic plate are upwards provided with a section of displacement through the tensile force of the cable when the elevator normally works, when the cable is broken, the elastic plate does not move downwards under the upward tensile force of the cable any more, the triggering assembly positioned below the elastic plate is triggered, the locking assembly is triggered by the triggering assembly to switch the state, and the car is rapidly braked; the trigger assembly drives the trigger piece to trigger the locking assembly in a rotating mode, and the structure and the matching between the structures are more stable; locking subassembly adopts the eccentric wheel to brake, the eccentric wheel need not to remove, only need rotate and can accomplish the conversion of first state and second state, braking time reduces to some extent, braking distance shortens thereupon, the car has been avoided, passenger in the car leads to accident and damage because of the hawser fracture suddenly the tenesmus, state after restricting absolutely to the elevator has protected, greatly reduced the injury degree to the inside passenger of car, the while has also increased the stationarity and the security of elevator.

In one example, the locking assembly further comprises a base, the base is provided with a guide rail groove, the eccentric wheel is located on one side of the guide rail groove, and the eccentric wheel can rotate towards the direction gradually approaching the guide rail groove. When the safety tongs are not needed to brake, the eccentric wheel is positioned on one side of the guide rail groove and does not contact with the guide rail in the guide rail groove; when braking is required, the eccentric wheel rotates and comes gradually closer to the guide rail groove and finally comes into contact with the guide rail to brake the car.

In one example, the locking assembly further comprises a rotating rod, one end of the rotating rod is fixedly connected with the central shaft of the eccentric wheel, the other end of the rotating rod is connected with the trigger piece, and the trigger piece can drive the rotating rod to rotate so that the eccentric wheel rotates from the second state to the first state. The rotation of the eccentric wheel is realized through a rotating rod fixedly connected with a central shaft of the eccentric wheel, when the trigger part moves upwards, the rotating rod hinged with the trigger part is driven to rotate upwards, the eccentric wheel rotates along with the rotating rod towards the direction gradually close to the guide rail groove, and the guide rail is extruded to brake the lift car.

In one example, the locking assembly further comprises a connecting plate, the connecting plate is fixedly connected with the base, the connecting plate is provided with a through hole, and a central shaft of the eccentric wheel penetrates through the through hole and is fixedly connected with the rotating rod. The connecting plate is used for fixing the eccentric wheel and the rotating rod on the base, and meanwhile, the through hole in the connecting plate can allow the eccentric wheel to rotate along with the rotating rod.

In one example, the trigger is connected with the rotating rod in a hinged manner, the elastic plate can trigger the rotating piece to rotate, so that the trigger is driven to move upwards, and the trigger drives the rotating rod to rotate upwards to enable the eccentric wheel to rotate and switch from the second state to the first state.

In one example, the eccentric is in the second state, the rotating rod is inclined downwardly by an angle of not more than 45 °. When need not the braking, the eccentric wheel is in the second state, and when dwang downward sloping angle was not more than 45, drive the dwang during the trigger lever upward movement more easily and upwards rotate, avoid producing the dwang because of the too big emergence that leads to unable pivoted condition of downward sloping angle.

In one example, the angle by which the swivelling levers are tilted downwards is 0 °. The angle of dwang downward sloping is 0, and the dwang is in the horizontality promptly, drives the dwang rotation during trigger piece upward movement more easily, and the dwang is the state of tilt up after the braking, and trigger piece and dwang are more stable.

In one example, the rotating part comprises an extension rod, a rotating shaft and a lifting rod, the rotating shaft is arranged through the fixing part, one end of the extension rod is fixedly connected to the rotating shaft, the other end of the extension rod can be abutted against the elastic plate, one end of the lifting rod is connected to the end part of the rotating shaft and can rotate along with the rotating shaft, and the other end of the lifting rod is hinged with the trigger; the elastic plate can trigger the extension rod to rotate downwards, so that the lifting rod is driven to rotate upwards through the rotating shaft, the trigger piece moves upwards, and the locking assembly is triggered to be switched from the second state to the first state.

In one example, the rotating member further comprises a torsion spring, the rotation shaft is sleeved with the torsion spring, one end of the torsion spring is fixed to the extension rod, and the other end of the torsion spring is fixed to the fixing member. The torsional spring mainly used resets, and when the hawser can normally work, the both ends of elastic plate upwards perk again, and the rotation piece that is located the elastic plate lower extreme can be turned round under the effect of power of torsional spring, makes the locking subassembly switch back the second state again by the first state, and the car can freely remove on the guide rail.

In one example, the end of the protruding rod is provided as a curved structure which can abut against the elastic plate. When the elastic plate presses the extension rod downwards, the extension rod rotates downwards, the contact between the end part of the extension rod and the elastic plate is changed continuously, and the curved surface structure can enable the contact between the elastic plate and the extension rod to be smoother and more stable.

Drawings

The drawings described herein are intended only to assist those skilled in the art in understanding the technical solutions of the present invention, and the exemplary embodiments of the present invention described in conjunction with the drawings are intended only to explain the technical solutions of the present invention and do not constitute an undue limitation on the present invention. In the drawings:

fig. 1 is a schematic perspective view of a bottomless household elevator provided by an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic perspective view of a locking assembly according to an embodiment of the present invention;

fig. 4 is a top view of an eccentric wheel according to an embodiment of the present invention.

List of reference numerals:

the elevator comprises a household elevator without a pit 1, an elastic plate 2, a lift car 3, a reversing pulley 4, a reel 5, a locking assembly 6, an eccentric wheel 7, a fixing piece 8, a rotating piece 9, a triggering piece 10, a base 11, a guide rail groove 12, a guide rail 13, a rotating rod 14, a connecting plate 15, an extension rod 16, a rotating shaft 17, a lifting rod 18 and a torsion spring 19.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1 to 4, the utility model provides a safety gear triggering structure of a bottomless household elevator 1, which comprises an elastic plate 2, wherein the middle part of the elastic plate 2 is connected with the top of an elevator car 3; the lifting assembly comprises two reversing pulleys 4 respectively arranged at two ends of the elastic plate 2, a reel 5 and a cable wound on the reel 5, wherein the cable is reversed by the reversing pulleys 4 and then extends upwards, the cable applies an upward force to the end part of the elastic plate 2 by the reversing pulleys 4 so that the elastic plate 2 is bent and deformed, and the two ends of the elastic plate 2 move upwards; two locking assemblies 6 respectively disposed at both ends of the elastic plate 2, the locking assemblies 6 including eccentric wheels 7, the eccentric wheels 7 having a first state of stopping the movement of the car 3 and a second state of releasing the movement of the car 3; the two trigger assemblies are respectively arranged at two ends of the elastic plate 2 and comprise a fixed part 8, a rotating part 9 and a trigger part 10 hinged with the rotating part 9, the fixed part 8 is fixedly arranged on the car 3, the rotating part 9 is rotatably arranged on the fixed part 8, and the rotating part 9 is positioned below the end part of the elastic plate 2; when the end of the elastic plate 2 moves downwards to exceed the set threshold, the elastic plate 2 can trigger the rotating piece 9 to rotate, so as to drive the trigger piece 10 to trigger the eccentric wheel 7 to switch from the second state to the first state. According to the safety gear triggering structure, the reversing pulleys 4 are arranged at the two ends of the elastic plate 2, so that the two ends of the elastic plate 2 are upwards displaced by a section of pulling force of a cable when an elevator normally works, when the cable is broken, the elastic plate 2 does not move downwards by the upward pulling force of the cable any more, and therefore the triggering assembly located below the elastic plate 2 is triggered, the locking assembly 6 is triggered by the triggering assembly to switch states, and the car 3 is rapidly braked; the trigger assembly drives the trigger piece 10 to trigger the locking assembly 6 in a rotating mode, so that the structure and the matching between the structures are more stable; locking subassembly 6 adopts eccentric wheel 7 to brake, eccentric wheel 7 need not to remove, only need rotate and can accomplish the conversion of first state and second state, braking time reduces to some extent, braking distance shortens thereupon, car 3 has been avoided, passenger in the car 3 leads to accident and damage because of the hawser fracture suddenly the tenesmus, state after the rope is disconnected to the elevator has been protected, greatly reduced the injury degree to the inside passenger of car 3, the stationarity and the security of elevator have also been increased simultaneously.

In one embodiment, as shown in fig. 4, the locking assembly 6 further includes a base 11, the base 11 defines a guide groove 12, the eccentric 7 is located at one side of the guide groove 11, and the eccentric 7 can rotate toward the guide groove 12. When the safety gear is not needed to brake, the eccentric wheel 7 is positioned at one side of the guide rail groove 12 and does not contact with the guide rail 13 in the guide rail groove 12; when braking is required, the eccentric 7 rotates and comes gradually closer to the guide rail groove 12 and finally comes into contact with the guide rail 13 to brake the car 3.

In one embodiment, as shown in fig. 4, the locking assembly 6 further comprises a rotating rod 14, one end of the rotating rod 14 is fixedly connected with the central shaft of the eccentric 7, and the other end is connected with the triggering member 10, and the triggering member 10 can drive the rotating rod 14 to rotate so as to rotate the eccentric 7 from the second state to the first state. The rotation of the eccentric 7 is realized by a rotating rod 14 fixedly connected with the central shaft of the eccentric 7, when the trigger 10 moves upwards, the rotating rod 14 hinged with the trigger 10 is driven to rotate upwards, the eccentric 7 rotates along with the rotating rod in the direction gradually approaching the guide rail groove 12, and the guide rail 13 is extruded to brake the car 3.

In one embodiment, as shown in fig. 4, the locking assembly 6 further includes a connecting plate 15, the connecting plate 15 is fixedly connected to the base 11, the connecting plate 15 is provided with a through hole, and the central shaft of the eccentric 7 passes through the through hole and is fixedly connected to the rotating rod 14. The connecting plate 15 is used for fixing the eccentric wheel 7 and the rotating rod 14 on the base 11, and the through hole on the connecting plate 15 can allow the eccentric wheel 7 to rotate along with the rotating rod 14.

In one embodiment, as shown in fig. 4, the triggering member 10 is hinged to the rotating rod 14, the elastic plate 2 can trigger the rotating member 9 to rotate, so as to drive the triggering member 10 to move upward, and the triggering member 10 drives the rotating rod 14 to rotate upward to rotate the eccentric wheel 7 and switch from the second state to the first state.

In one embodiment, the eccentric 7 is in the second state, the swivelling levers 14 are inclined downwards by an angle of not more than 45 °. When the braking is not needed, the eccentric wheel 7 is in the second state, and when the downward inclination angle of the rotating rod 14 is not more than 45 degrees, the trigger rod 10 drives the rotating rod 14 to rotate upwards more easily when moving upwards, so that the situation that the rotating rod 14 cannot rotate due to too large downward inclination angle is avoided.

Specifically, as shown in fig. 4, the rotating lever 14 is inclined downward at an angle of 0 °. The angle of dwang 14 downward sloping is 0, and dwang 14 is in the horizontality promptly, drives dwang 14 and rotates when trigger 10 upward movement more easily, and the dwang 14 is the state of tilt up after the braking, and trigger 10 is more stable with dwang 14.

In one embodiment, as shown in fig. 1 to 2, the rotating member 9 includes an extending rod 16, a rotating shaft 17 and a lifting rod 18, the rotating shaft 17 is disposed through the fixing member 8, one end of the extending rod 16 is fixed to the rotating shaft 17, the other end of the extending rod can be abutted against the elastic plate 2, one end of the lifting rod 18 is connected to the end of the rotating shaft 17, the lifting rod 18 can rotate along with the rotating shaft 17, and the other end is hinged to the triggering member 10; the elastic plate 2 can trigger the extension bar 16 to rotate downwards, so that the lifting bar 18 is driven to rotate upwards through the rotating shaft 17, so that the trigger 10 moves upwards and triggers the locking assembly 6 to switch from the second state to the first state.

In one embodiment, as shown in fig. 1 to 2, the rotating member 9 further includes a torsion spring 19, the torsion spring 19 is sleeved on the rotating shaft 17, one end of the torsion spring 19 is fixed to the protruding rod 16, and the other end is fixed to the fixing member 8. The torsion spring 19 is mainly used for resetting, when the mooring rope can work normally, the two ends of the elastic plate 2 tilt upwards again, the rotating part 9 at the lower end of the elastic plate 2 can rotate under the action of the force of the torsion spring 19, the locking assembly 6 is switched back to the second state from the first state, and the car 3 can move freely on the guide rail 13.

In a particular embodiment, as shown in fig. 2, the end of the protruding rod 16 is provided with a curved structure capable of abutting against the elastic plate 2. When the elastic plate 2 presses the extension rod 16 downwards, the extension rod 16 rotates downwards, the contact between the end part of the extension rod 16 and the elastic plate 2 is changed continuously, and the curved surface structure can enable the contact between the elastic plate 2 and the extension rod 16 to be smoother and more stable.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. Safety tongs trigger structure of no pit home use elevator, its characterized in that includes:

the middle part of the elastic plate is connected with the top of the elevator car;

the lifting assembly comprises two reversing pulleys arranged at the two ends of the elastic plate respectively, a reel and a cable wound on the reel, the cable extends upwards after reversing from the reversing pulleys, and the cable applies an upward force to the end part of the elastic plate by the reversing pulleys so as to enable the elastic plate to be bent and deformed, and the two ends of the elastic plate move upwards;

the two locking assemblies are respectively arranged at two ends of the elastic plate and comprise eccentric wheels, and the eccentric wheels have a first state of stopping the movement of the lift car and a second state of releasing the movement of the lift car;

the two trigger assemblies are respectively arranged at two ends of the elastic plate and comprise a fixed part, a rotating part and a trigger part hinged with the rotating part, the fixed part is fixedly arranged on the lift car, the rotating part is rotatably arranged on the fixed part, and the rotating part is positioned below the end part of the elastic plate; when the end part of the elastic plate moves downwards and exceeds a set threshold value, the elastic plate can trigger the rotating piece to rotate, so that the trigger piece is driven to trigger the eccentric wheel to be switched from the second state to the first state.

2. The safety gear trigger structure according to claim 1, wherein the locking assembly further comprises a base, the base defines a guide groove, the eccentric is located at one side of the guide groove, and the eccentric is capable of rotating in a direction gradually approaching the guide groove.

3. The safety gear triggering structure according to claim 2, wherein the locking assembly further comprises a rotating rod, one end of the rotating rod is fixedly connected with the central shaft of the eccentric wheel, the other end of the rotating rod is connected with the triggering member, and the triggering member can drive the rotating rod to rotate so as to enable the eccentric wheel to rotate from the second state to the first state.

4. The safety gear trigger structure according to claim 3, wherein the locking assembly further comprises a connecting plate, the connecting plate is fixedly connected with the base, the connecting plate is provided with a through hole, and a central shaft of the eccentric wheel passes through the through hole and is fixedly connected with the rotating rod.

5. A safety gear trigger structure according to claim 3, wherein the trigger member is hinged to the rotating rod, the elastic plate can trigger the rotating member to rotate, so as to drive the trigger member to move upward, and the trigger member drives the rotating rod to rotate upward, so as to rotate the eccentric wheel and switch from the second state to the first state.

6. A safety gear trigger arrangement according to claim 5, wherein the angle at which the rotatable lever is tilted downwards when the eccentric is in the second state is not more than 45 °.

7. A safety gear trigger structure according to claim 6, wherein the angle at which the swivelling lever is tilted downwards is 0 °.

8. The safety gear triggering structure according to claim 1, wherein the rotating member comprises an extending rod, a rotating shaft and a lifting rod, the rotating shaft is arranged in the fixing member in a penetrating manner, one end of the extending rod is fixedly connected to the rotating shaft, the other end of the extending rod can be abutted against the elastic plate, one end of the lifting rod is connected to the end portion of the rotating shaft and can rotate along with the rotating shaft, and the other end of the lifting rod is hinged to the triggering member; the elastic plate can trigger the extension rod to rotate downwards, so that the lifting rod is driven to rotate upwards through the rotating shaft, the trigger piece moves upwards, and the locking assembly is triggered to be switched from the second state to the first state.

9. The safety gear triggering structure according to claim 8, wherein the rotating member further comprises a torsion spring, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed to the protruding rod, and the other end of the torsion spring is fixed to the fixing member.

10. A safety gear trigger structure according to claim 8, wherein the end of the protruding rod is provided with a curved surface structure, and the curved surface structure can be abutted with the elastic plate.