CN217024948U - Elevator landing door opening and holding device - Google Patents
Elevator landing door opening and holding device Download PDFInfo
- Publication number
- CN217024948U CN217024948U CN202220772933.2U CN202220772933U CN217024948U CN 217024948 U CN217024948 U CN 217024948U CN 202220772933 U CN202220772933 U CN 202220772933U CN 217024948 U CN217024948 U CN 217024948U
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- landing door
- friction plates
- door opening
- tensioning
- elevator landing
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Abstract
The utility model discloses an elevator landing door opening and holding device, which comprises a support frame, two friction plates and a tensioning member, wherein the support frame is arranged on a landing door sill of an elevator landing door, the two friction plates are arranged at the lower end of the support frame and extend downwards into the landing door sill, the two friction plates are arranged at intervals along the left-right direction and can move relatively along the left-right direction, the tensioning member is movably arranged between the two friction plates along the up-down direction, the tensioning member is provided with a tensioning position and a releasing position away from the tensioning position in the moving direction, when the tensioning member is positioned at the tensioning position, the tensioning member outwards props the two friction plates against the side wall of the landing door sill between the two friction plates, so that when the elevator is maintained, the support frame can be fixed on the landing door sill and limits the elevator landing door only by the tensioning member outwards propping the two friction plates, then the two friction plates are inserted into the landing door sill, the device has the advantages of simple structure, easy carrying, low production cost and easy popularization.
Description
Technical Field
The utility model relates to an opening holding device, in particular to an elevator landing door opening holding device.
Background
With the development of society, the elevator is used more and more. Due to the situations of maintenance, inspection, detection, emergency rescue and the like, the elevator needs to open the landing door to enter the hoistway or open the landing door and the car door for rescue. In the emergency unlocking requirement of 7.7.3.2 in the elevator installation standard GB7588-2003, in the case of a car door driving a landing door, when the car is outside the unlocking zone, if the landing door is opened for whatever reason, a device (weight or spring) should be present to ensure that the landing door is automatically closed. After the landing door is opened, the door can be automatically closed due to the self-closing force of the landing door. To maintain the landing door open, a device is required to provide resistance.
7.4.1 in GB7588-2003 is described as follows: each landing door entrance should be provided with a landing door sill of sufficient strength to withstand the load entering the car through it. 7.4.2.1 are described below: the design of the landing door should prevent derailment, mechanical jamming or dislocation at the end of travel during normal operation. 7.5.2.1.1.1 are described below: for powered automatic doors, the door closing prevention force should not be greater than 150N, and this force must not be measured within 1/3 of the beginning of the door closing stroke.
Traditional layer door is opened holding device, firstly can not provide sufficient resistance and prevent the self-closing of layer door, secondly because the selection of action position has hindered personnel's business turn over layer door, thirdly damages easily under the effect of layer door card resistance, and current layer door is opened holding device and is in order to satisfy above-mentioned requirement, and the complicated high difficult popularization of manufacturing cost of structure.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an elevator landing door opening and holding device, and aims to solve the problems that the landing door opening and holding device in the prior art is complex in structure and not easy to carry, and the production cost is high and the popularization is difficult.
To achieve the above object, the present invention provides an elevator landing door opening holding device including:
the supporting frame is used for being installed on a landing sill of an elevator landing door;
the two friction plates are arranged at the lower end of the support frame and extend downwards to the inside of the landing sill, and the two friction plates are arranged at intervals along the left-right direction and can move relatively in the left-right direction; and the number of the first and second groups,
the tensioning piece is movably arranged between the two friction plates along the up-down direction and is provided with a tensioning position and a releasing position away from the tensioning position in the moving direction;
when the tensioning piece is located at the tensioning position, the tensioning piece is located between the two friction plates, the two friction plates are outwards propped open to be abutted against the side wall of the landing sill.
Optionally, the tensioning device comprises a driving part movably mounted on the supporting frame, and the driving part is used for driving the tensioning part to move in the vertical direction.
Optionally, the tensioning piece is equipped with first screw hole, the upper end of support frame is equipped with the first through-hole that runs through along upper and lower direction, the driving piece is the adjusting screw, the adjusting screw runs through along upper and lower direction first through-hole, the adjusting screw lower extreme with first screw hole cooperation.
Optionally, the support frame upper end is equipped with along the second screw hole that upper and lower direction runs through, the driving piece is the adjustment screw, the adjustment screw with the cooperation of second screw hole, adjustment screw lower extreme with tensioning piece fixed connection.
Optionally, the bottom of the support frame is provided with an accommodating groove, the upper ends of the two friction plates are movably arranged in the accommodating groove, a positioning pin penetrating through the upper ends of the two friction plates along the left-right direction is arranged in the accommodating groove, and a second through hole is formed in the penetrating position of the positioning pin of the two friction plates.
Optionally, the diameter of the second through hole is larger than the diameter of the positioning pin.
Optionally, the locating pin is equipped with two in the front and back direction, two the locating pin sets up respectively both sides around the tensioning piece.
Optionally, the outward surfaces of the two friction plates have friction surfaces to increase friction force.
Optionally, the tensioning member is spherically disposed.
Optionally, the support frame with the material of tensioning piece is the aluminum alloy, the material of friction plate is high manganese steel.
In the technical scheme of the utility model, the elevator landing door opening and retaining device comprises a support frame, two friction plates and a tensioning member, wherein the support frame is used for being arranged on a landing door sill of an elevator landing door, the two friction plates are arranged at the lower end of the support frame and extend downwards to the inside of the landing door sill, the two friction plates are arranged at intervals along the left-right direction and can move relatively along the left-right direction, the tensioning member is movably arranged between the two friction plates along the up-down direction, the tensioning member is provided with a tensioning position and a loosening position away from the tensioning position in the moving direction, when the tensioning member is at the tensioning position, the tensioning member outwards props the two friction plates to abut against the side wall of the landing door sill, when the elevator landing door is in an opening state, the elevator landing door opening and retaining device is tightly attached to the elevator landing door and embedded into the landing door sill, then the position of adjustment tensioning piece arrives tensioning position to make two friction plates outwards strut with the landing door sill offsets, realize providing the resistance for the landing door, the barrier layer door is closed, elevator landing door is opened holding device simple structure and is easily carried, makes things convenient for manufacturing and popularization moreover.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic front view of an embodiment of an elevator landing door opening maintaining device according to the present invention;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
FIG. 3 is a left side view of the structure of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line B-B in FIG. 3;
fig. 5 is a schematic view of the elevator landing door opening maintaining device of the present invention installed in a landing sill.
The embodiment of the utility model is illustrated by reference numerals:
| reference numerals | Name (R) | Reference numerals | Name(s) |
| 100 | Elevator landing door opening and |
21 | Second through |
| 1 | |
3 | Tensioning |
| 11 | Accommodating |
31 | |
| 12 | Locating |
4 | Adjusting |
| 13a | First through |
5 | |
| 13b | Second screw hole | 6 | |
| 2 | |
7 | Landing sill |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Traditional holding device is opened to layer door, firstly can not provide sufficient resistance and prevent the self-closing of layer door, secondly because the selection of action position has hindered personnel business turn over layer door, and thirdly damages easily under the effect of layer door card resistance, and current holding device is opened to layer door is in order to satisfy above-mentioned requirement, and the structure is complicated to be difficult for carrying and manufacturing cost height is difficult for promoting.
In view of this, the present invention provides an elevator landing door opening maintaining device 100. Fig. 1 to 4 show an embodiment of an elevator door opening maintaining device 100 according to the present invention.
Referring to fig. 1 to 4, the elevator landing door opening and retaining device 100 includes a support frame 1, two friction plates 2 and a tensioning member 3, the support frame 1 is configured to be mounted on a landing door sill 7 of an elevator landing door 5, the two friction plates 2 are mounted at a lower end of the support frame 1 and extend downward into the landing door sill 7, the two friction plates 2 are spaced apart from each other in a left-right direction and are movable in a left-right direction, the tensioning member 3 is movably disposed between the two friction plates 2 in an up-down direction, the tensioning member 3 has a tensioning position and a release position away from the tensioning position in the moving direction, and when the tensioning member 3 is located at the tensioning position, the two friction plates 2 are spread outward between the two friction plates 2 by the tensioning member 3 and abut against a side wall of the landing door sill 7.
Referring to fig. 5, an elevator landing door 5 is fixedly connected to a slider 6, the slider 6 is slidably mounted in the landing door sill 7, after the elevator landing door 5 is opened, the slider 6 slides in the landing door sill 7 to a door opening position, at this time, the elevator landing door opening retaining device 100 is embedded into the landing door sill 7 by abutting against the side edge of the elevator landing door 5, the tensioning member 3 is adjusted, the friction baffle blocks the landing door sill 7, at this time, the elevator landing door opening retaining device 100 provides resistance for the elevator landing door 5, the elevator landing door 5 is blocked from being closed, and the function of opening and retaining the elevator landing door 5 is realized.
In the embodiment of the present invention, the elevator door opening maintaining device 100 includes a driving member movably mounted on the support frame 1, and the driving member is used for driving the tension member 3 to move in the up-and-down direction.
Further, in an embodiment of the present invention, the driving member is an adjusting screw 4, the tensioning member 3 is provided with a first threaded hole 31, the upper end of the supporting frame 1 is provided with a first through hole 13a penetrating in the vertical direction, the adjusting screw 4 penetrates the first through hole 13a in the vertical direction, the lower end of the adjusting screw 4 is connected to the first threaded hole 31 in a matching manner, because the width of the groove of the existing landing sill 7 is mostly manufactured in a uniform standard, the opening degree of the two friction plates 2 can be designed in advance during production, so that the two friction plates 2 are just in interference fit with the groove of the landing sill 7 in a tensioning state, when in use, the supporting frame 1 can be firstly erected on the landing sill 7, then the tensioning member 3 is abutted against the tensioning member 3 and the adjusting screw 4 is used to enable the tensioning member 3 to move upwards and abut against the two friction plates 2, the two friction plates 2 are outwards opened and tightly abutted against the landing sill 7; or the tensioning member 3 can be abutted by hand first and then the adjusting screw 4 is screwed, so that the tensioning member 3 moves upwards and abuts against the two friction plates 2, the two friction plates 2 are opened outwards, and then the elevator landing door opening retaining device 100 is embedded into the landing door sill 7 to provide resistance for closing the elevator landing door 5.
Furthermore, the support frame 1 and the tensioning member 3 are made of aluminum alloy 6063 commonly used in the market, and in a T5 processing state, the tensile strength can reach 175MPa, the yield limit is 130MPa, and the Babbitt hardness is 64Hba, so that the use requirement is well met. The two friction plates 2 are made of high manganese steel ZGMn13, which has high toughness after heat treatment, is a very tough non-magnetic alloy, has high wear resistance due to work hardening of the surface layer under the action of impact load, and is widely used for manufacturing parts with high wear resistance and bearing impact load. Because the two friction plates 2 are required to have higher friction coefficients, the friction coefficients can reach FF grade after being processed on the surfaces, the friction coefficients reach between 0.35 and 0.45 and reach the international standard friction coefficients, and the friction coefficients are also suitable for the civil motor vehicles. M6 and Q235 are selected as the adjusting screws 4, and the maximum tensile load and the holding load can reach 6630N when the table is looked up. Assuming that the minimum friction coefficient of the two friction plates 2 is 0.35 and the maximum force to keep the landing door open is 150N, the two friction plates 2 are required to provide a pressure of 150/0.35-428.6N. The adjusting screw 4 and the tensioning piece 3 are screwed tightly, so that the friction plate 2 reaches the required maximum pressure, and the use strength of the adjusting screw 4 can also be met.
In another embodiment of the present invention, the driving member is an adjusting screw 4, the upper end of the support frame 1 is provided with a second threaded hole 13b penetrating in the vertical direction, the adjusting screw 4 is matched with the second threaded hole 13b, the lower end of the adjusting screw 4 is fixedly connected with the tensioning member 3, when in use, the support frame 1 can be directly erected above the landing sill 7, the two friction plates 2 are embedded in the landing sill 7, and then the adjusting screw 4 is rotated to enable the adjusting screw 4 to move upwards to drive the tensioning member 3 to move upwards, so that the two friction plates 2 are spread outwards to abut against the inner wall of the landing sill 7, and the function of holding the landing door opened is achieved.
Further, in other embodiments of the present invention, the driving member may also be another device capable of moving and holding along a straight line in a reciprocating manner, for example, in yet another embodiment of the present invention, the driving member includes a connecting rod and a spring, the upper end of the supporting frame 1 is provided with a first through hole 13a penetrating in an up-and-down direction, the connecting rod is inserted into the first through hole 13a, the upper end of the connecting rod is provided with a laterally and horizontally extending boss, the lower end of the connecting rod is fixedly connected with the tensioning member 3, the spring is arranged between the boss and the supporting frame 1, when in use, the boss is pressed downwards to make the tensioning member 3 in the release position, then the elevator door opening holding device is embedded into the door sill 7, then the hand is released, and the elastic force of the spring acts on the boss to drive the connecting rod and the tensioning member 3 to move upwards to return to the tensioning position, and the two friction plates 2 are outwards propped against the inner wall of the landing sill 7.
In the embodiment of the present invention, the bottom of the supporting frame 1 is provided with an accommodating groove 11, the upper ends of the two friction plates 2 are movably disposed in the accommodating groove 11, a positioning pin 12 penetrating the upper ends of the two friction plates 2 in the left-right direction is disposed in the accommodating groove 11, a second through hole 21 is disposed at a position where the two friction plates 2 are penetrated by the positioning pin 12, the diameter of the second through hole 21 is greater than that of the positioning pin 12, so that the two friction plates 2 can move and tilt on the positioning pin 12, and the accommodating groove 11 is used for limiting an opening angle of the friction plates 2, so as to facilitate carrying.
Further, be equipped with two, two on locating pin 12 front and back direction locating pin 12 sets up respectively both sides around tensioning piece 3 guarantee two friction plate 2's stability, can not lead to by tilting around the friction plate 2 with the contact surface of sill diminishes, reduces the frictional force when blockking.
Further, the two friction plates 2 have friction surfaces on the outward surfaces thereof to increase the friction force.
Further, in a preferred embodiment of the present invention, the tension member 3 is provided in a spherical shape, so that the tension member 3 can move up and down and contact with the two friction plates 2, and in other embodiments, the tension member 3 may also be a circular truncated cone shape or a cylindrical shape extending back and forth along a horizontal direction.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An elevator landing door opening retention device, comprising:
the supporting frame is used for being installed on a landing sill of an elevator landing door;
the two friction plates are arranged at the lower end of the support frame and extend downwards to the inside of the landing sill, and the two friction plates are arranged at intervals along the left-right direction and can move relatively in the left-right direction; and the number of the first and second groups,
the tensioning piece is movably arranged between the two friction plates along the up-down direction, and the tensioning piece is provided with a tensioning position and a releasing position away from the tensioning position in the moving direction;
when the tensioning piece is located at the tensioning position, the tensioning piece is located between the two friction plates, the two friction plates are outwards propped open to be abutted against the side wall of the landing sill.
2. The elevator landing door opening retention device of claim 1, including a drive member movably mounted to the support frame, the drive member being configured to drive the tension member in a vertical direction.
3. The elevator landing door opening holding device of claim 2, wherein the tension member is provided with a first threaded hole, the support bracket is provided at an upper end thereof with a first through hole penetrating in an up-down direction, the driving member is an adjustment screw penetrating in the up-down direction through the first through hole, and a lower end of the adjustment screw is engaged with the first threaded hole.
4. The elevator door opening maintaining device according to claim 2, wherein the support frame has a second threaded hole formed at an upper end thereof and penetrating in an up-and-down direction, the driving member is an adjusting screw engaged with the second threaded hole, and a lower end of the adjusting screw is fixedly connected to the tension member.
5. The elevator landing door opening maintaining device according to claim 1, wherein a receiving groove is formed in a bottom of the supporting frame, upper ends of the two friction plates are movably disposed in the receiving groove, a positioning pin penetrating the upper ends of the two friction plates in a left-right direction is disposed in the receiving groove, and a second through hole is formed in a position of the two friction plates penetrated by the positioning pin.
6. The elevator landing door opening retention device of claim 5, wherein the diameter of the second through hole is greater than the diameter of the locating pin.
7. The elevator landing door opening maintaining device according to claim 5, wherein the positioning pins are provided in two in the front-rear direction, and the two positioning pins are provided on the front and rear sides of the tension member, respectively.
8. The elevator landing door opening maintaining device of any of claims 1-7, wherein the two friction plates have a friction surface on an outward facing side to increase friction.
9. The elevator landing door opening retention device of claim 8, wherein the tension member is spherically disposed.
10. The elevator landing door opening retention device of claim 9, wherein the support bracket and the tension member are aluminum alloy and the friction plate is high manganese steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220772933.2U CN217024948U (en) | 2022-04-02 | 2022-04-02 | Elevator landing door opening and holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220772933.2U CN217024948U (en) | 2022-04-02 | 2022-04-02 | Elevator landing door opening and holding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217024948U true CN217024948U (en) | 2022-07-22 |
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ID=82413817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220772933.2U Active CN217024948U (en) | 2022-04-02 | 2022-04-02 | Elevator landing door opening and holding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217024948U (en) |
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2022
- 2022-04-02 CN CN202220772933.2U patent/CN217024948U/en active Active
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