Overhaul protection device for elevator on short top floor
By designing a maintenance protection device including slide rails, first strut poles and second strut poles in a low top elevator, the problem of small top space of the low top elevator is solved, and the safety maintenance and prevention of elevators from rushing to the top is achieved.
Patent Information
- Application Number
- CN202421600190.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The top floor space of the low top floor elevator is small, making it difficult to ensure the safety of maintenance personnel.
A low-top elevator maintenance protection device is designed, including a slide rail, a first strut and a second strut provided on the top of the elevator car. The strut is moved and fixed by hinging and hydraulic mechanisms to form a stable triangular support structure.
Through this device, the elevator roof space can be automatically supported when the maintenance personnel enter the top floor of the elevator to ensure the safety of the maintenance personnel and prevent the elevator from accidentally rushing to the top.
Smart Images
Figure CN222743828U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator equipment, in particular to a maintenance and protection device for a low-top elevator. Background Art
[0002] For some home elevators, the top of the elevator shaft is the floor of the upper floors, so the top space has certain limitations, and it is difficult to reserve enough safe standing space, resulting in the safety of maintenance personnel when they need to enter the car top for maintenance. However, there is a large market demand for home elevators, so for the problem that the top maintenance height space of low-top elevators cannot meet the safety maintenance requirements, it is urgent to design an automated and safe top maintenance protection device to ensure that maintenance personnel can enter the top space of the elevator for safe maintenance. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a low-top elevator maintenance protection device to solve the problem in the prior art that the top space of the elevator shaft is small and the safety of maintenance personnel cannot be guaranteed.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a low-top elevator maintenance protection device, comprising a slide rail, a first support rod and a second support rod arranged on the elevator car top, one end of the first support rod is hinged to a fixed base fixedly installed on the elevator car top through a first rotating shaft, and the other end is a free end, and a first slide seat is installed on the first support rod, and the first slide seat is slidably connected to the first support rod so that it can move along the length direction of the first support rod; one end of the second support rod is hinged to a second slide seat slidably installed on the slide rail through a second rotating shaft, so that the end can move in a direction close to or away from the fixed base, and the other end is hinged to the first slide seat;
[0005] When the second slide moves from one end of the slide rail away from or close to the fixed base to the other end, the first slide moves from one end of the first support rod close to or away from the fixed base to the other end, and the height between the free end of the first support rod and the elevator car top changes from the minimum height to the maximum height or from the maximum height to the minimum height;
[0006] It also includes a limiting structure, which can limit the movement of the first slide or the second slide, or the rotation of the first strut, or the rotation of the second strut when the height between the free end of the first strut and the elevator car top is the maximum height.
[0007] As an optimization, when the height between the free end of the first support rod and the elevator car top reaches the maximum height, the angle between the second support rod and the side rod section of the first support rod close to the fixed base is less than 90 degrees.
[0008] As an optimization, it further includes a first driving mechanism, which is connected to the second slide seat and is used to drive the second slide seat to move along the slide rail.
[0009] As an optimization, the first driving mechanism comprises a first hydraulic mechanism installed on the elevator car roof, which has a telescopic hydraulic rod, and the end of the hydraulic rod is connected to the second slide.
[0010] As an optimization, the limiting structure includes a second hydraulic mechanism installed on the second slide, which has a retractable hydraulic push rod. Correspondingly, a limiting hole is provided on the slide rail. When the second slide moves to one end of the slide rail close to the fixed base, the hydraulic push rod is opposite to the limiting hole and can be inserted into the limiting hole.
[0011] As an optimization, a first detection switch and a second detection switch are respectively installed at both ends of the first support rod. When the first slide contacts the first detection switch, the first drive mechanism can stop running, and the second hydraulic mechanism can be activated to drive the hydraulic push rod to insert into the limit hole. When the first slide contacts the second detection switch, the first drive mechanism can stop running.
[0012] As an optimization, it also includes the top floor door of the elevator, which is provided with a door lock and a door lock switch cooperating with the door lock. When the door lock is unlocked and the door lock switch is actuated, the first drive mechanism can start running. When the door lock is locked and the door lock switch is actuated, the second hydraulic mechanism can be actuated to drive the hydraulic push rod to exit the limit hole and the first drive mechanism can start running.
[0013] As an optimization, a support plate is hingedly connected to the free end of the first strut.
[0014] Compared with the prior art, the utility model has the following advantages: by arranging a first strut and a second strut on the elevator car top, and hingedly connecting the first strut and the second strut, the two struts are hingedly connected to the elevator car top, and one end of the second strut can slide on the elevator car top, and the other end can slide along the first strut, when maintenance personnel need to enter the car top for maintenance, they push the second strut to move, so that the second strut props up the first strut, and after propping up, the first strut and the second strut form a stable triangular support structure, and finally the support structure is fixed by a limiting structure, thereby ensuring the safety of the maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the working principle of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the utility model (propped up state);
[0017] Figure 3 It is a structural schematic diagram of the utility model (folded state);
[0018] In the figure: 1 first support rod, 2 second support rod, 3 first rotating shaft, 4 fixed base, 5 first slide, 6 second rotating shaft, 7 second slide, 8 first hydraulic mechanism, 9 hydraulic rod, 10 second hydraulic mechanism, 11 hydraulic push rod, 12 first detection switch, 13 second detection switch, 14 elevator top floor door, 15 door lock, 16 door lock switch, 17 support plate. DETAILED DESCRIPTION
[0019] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0021] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] Example: See Figure 1-Figure 3 A maintenance and protection device for a low-top elevator comprises a slide rail, a first support rod 1 and a second support rod 2 arranged on the elevator car roof. One end of the first support rod 1 is hinged to a fixed base 4 fixedly installed on the elevator car roof through a first rotating shaft 3, and the other end is a free end, and a support plate 17 is hinged to the end through a ball joint to increase the force bearing area and the supporting effect. A first slide seat 5 is installed on the first support rod 1, and the first slide seat 5 is connected with the first support rod 1 in a sliding manner so that it can move along the length direction of the first support rod 1; one end of the second support rod 2 is hinged to a second slide seat 7 installed on the slide rail in a sliding manner through a second rotating shaft 6 so that the end can move in a direction close to or away from the fixed base 4, and the other end is hinged to the first slide seat 5. Specifically, a slide groove is provided on the first support rod 1, and a ball bearing is provided on the first slide seat 5. The bearing rolls in the slide groove so that the first slide seat 5 can slide along the slide groove.
[0023] When the second slide 7 moves from one end of the slide rail away from or close to the fixed base 4 to the other end, the first slide 5 moves from one end of the first support rod 1 close to or away from the fixed base 4 to the other end, and the height between the free end of the first support rod 1 and the elevator car top changes from the minimum height to the maximum height or from the maximum height to the minimum height;
[0024] It also includes a limiting structure, which can limit the movement of the first slide 5 or the second slide 7, or the rotation of the first strut 1, or the rotation of the second strut 2 when the height between the free end of the first strut 1 and the elevator car top is at the maximum height.
[0025] Specifically, the fixed base 4 is fixed on the roof beam of the elevator car, and the second slide 7 is slidably mounted on the slide rail. In order to improve the automation of the movement of the first support rod 1, this embodiment also includes a first driving mechanism, which is connected to the second slide 7 and is used to drive the second slide 7 to move. Specifically, the first driving mechanism includes a first hydraulic mechanism 8 installed on the top of the elevator car, which has a retractable hydraulic rod 9, and the end of the hydraulic rod 9 is connected to the second slide 7. In order to ensure the structural stability and strength after the second support rod 2 props up the first support rod 1, in this embodiment, the limiting structure includes a second hydraulic mechanism 10 installed on the second slide 7, which has a retractable hydraulic push rod 11. Correspondingly, a limiting hole is provided on the elevator car top. Specifically, the limiting hole is arranged on the slide rail. When the height between the free end of the first support rod 1 and the elevator car top is the maximum height, the hydraulic push rod 11 is opposite to the limiting hole and is retracted and inserted into the limiting hole under the action of hydraulic pressure to fix the second slide 7, thereby ensuring the stability of the entire supporting structure. When the maintenance is completed, the hydraulic push rod 11 retracts and exits the limiting hole, and the second slide 7 can slide normally. In this embodiment, in order to ensure the smoothness of the relative movement between the first strut 1 and the second strut 2 and prevent jamming, when the height between the free end of the first strut 1 and the elevator car top reaches the maximum height, the angle between the second strut 2 and the side rod section of the first strut 1 close to the fixed base 4 is less than 90 degrees. In this way, when the free end of the first strut 1 abuts against the upper floor slab or the first strut 1 rotates to the maximum limit angle, the movement of the second strut 2 can continue to drive the first slide 5 to move along the first strut 1 until the first slide 5 moves to the end of the first strut 1 close to the free end, so as to better form the final triangular support structure.
[0026] In addition, a limiting structure can also be provided on the fixed base 4 to limit the rotation angle of the first support rod 1 so that it can only rotate within a preset angle range. In this way, when the first support rod 1 rotates to the maximum angle, at this time, the height between the free end of the first support rod 1 and the elevator car top is the safe inspection height. After it stops rotating, the continued movement of the second slide 7 can still push the first slide 5 to move along the first support rod 1 to the end close to the free end, and finally form a relatively stable triangular support structure. In addition, in order to ensure the smoothness of movement, a second driving mechanism can also be provided, and the second driving mechanism is connected to the second support rod 2, and is used to drive the second support rod 2 to rotate around the second rotating shaft 6. Specifically, the second support rod 2 is fixedly connected to the second rotating shaft 6, and the second driving mechanism includes a driving motor, and the motor shaft of the driving motor is transmission-connected to the second rotating shaft 6, and is used to drive the second rotating shaft 6 to drive the second support rod 2 to rotate around the second rotating shaft 6. Of course, in the specific implementation, it is also possible to only use the first driving mechanism to drive the second slide 7 to move, and drive the second rotating shaft 6 to rotate through gear transmission or other transmission forms to drive the second support rod 2 to rotate. It is preferably set independently because when the first support rod 1 and the second support rod 2 move relative to each other, the moving speed of the second slide 7 is difficult to match the moving speed of the first slide 5, and assuming that the moving speed of the second slide 7 is a uniform motion, the moving speed of the first slide 5 is a non-uniform motion. Therefore, the method of independently designing the driving mechanism makes it easier to achieve the movement matching of the first slide 5 and the second slide 7, so as to ensure the movement stability and smoothness of the first support rod 1 and the second support rod 2, to ensure that the support structure formed by the first support rod 1 and the second support rod 2 can be well supported and folded, and has a certain support strength during the supporting process, to ensure that it can smoothly support the safety maintenance height for maintenance personnel.
[0027] In this embodiment, a first detection switch 12 and a second detection switch 13 are respectively installed at both ends of the first support rod 1. When the first slide 5 contacts the first detection switch 12, the first drive mechanism can be stopped and the second hydraulic mechanism 10 can be driven to drive the hydraulic push rod 11 to insert into the limit hole. When the first slide 5 contacts the second detection switch 13, the first drive mechanism can be stopped. The elevator top floor door 14 is also included. The elevator top floor door 14 is provided with a door lock 15 and a door lock switch 16 matched with the door lock 15. When the door lock 15 is unlocked and the door lock switch 16 is actuated, the first drive mechanism can be started. When the door lock 15 is locked and the door lock switch 16 is actuated, the second hydraulic mechanism 10 can be driven to drive the hydraulic push rod 11 out of the limit hole and the first drive mechanism can be started. Specifically, the door lock switch 16 and the detection switch can be connected to the operation circuit of each drive mechanism or hydraulic mechanism, and can also be controlled to start or stop, forward or reverse through the elevator control system. The specific implementation methods are all existing control technologies and will not be repeated.
[0028] During specific use, when the maintenance personnel need to enter the elevator car top for maintenance, the elevator is stopped at a set height, and the door lock 15 of the elevator top floor door 14 is unlocked to make the door lock 15 linked to the door lock switch 16 to act, and the first hydraulic mechanism 8 and the second drive mechanism receive the action signal of the door lock switch 16 and start to operate, and the hydraulic rod 9 pushes the second slide 7 forward along the slide rail installed on the elevator car top beam, and the first support rod 1 starts to rotate from the minimum height between its free end and the elevator car top. During the rotation process, due to the length restrictions of each rotating pair and rod, the first slide 5 slides upward along the slide groove on the first support rod 1, and when the support plate 17 on the first support rod 1 is against the top floor slab of the elevator shaft or the first support rod 1 is rotated to the set maximum angle, that is, the first support rod 1 is automatically When the height between the end and the elevator car top reaches the maximum height (safety inspection height), the first support rod 1 stops rotating, and the second slide 7 continues to move forward, so that the first slide 5 continues to move toward the free end of the first support rod 1 until the first slide 5 contacts the first detection switch 12, and the movement stops. At the same time, the second hydraulic mechanism 10 drives the hydraulic push rod 11 to insert into the limit hole to realize structural fixation, so that the first support rod 1 and the second support rod 2 are fixed in this position. At this time, the first support rod 1 and the second support rod 2 form a stable triangular support structure, and the support plate 17 is supported on the top floor of the elevator shaft or is limited to a certain inclination angle. Maintenance personnel can safely enter the car top position and safely inspect the elevator. At the same time, it can also prevent the elevator from accidentally hitting the top, providing a certain protective effect.
[0029] When the maintenance personnel leave the elevator car top after the inspection is completed, the floor door lock 15 is reset to reset the door lock switch 16, the second hydraulic mechanism 10 makes the hydraulic push rod 11 withdraw from the limit hole, and the first hydraulic mechanism 8 and the second drive mechanism run in reverse, the hydraulic rod 9 makes the second slide 7 slide rail move backward, the first support rod 1 rotates around the first rotating shaft 3, and the first slide 5 moves downward along the slide groove on the first support rod 1. When the height between the free end of the first support rod 1 and the elevator car top reaches the minimum height, the first slide 5 contacts the second detection switch 13, the first hydraulic mechanism 8 stops running, and the entire support structure is reset and folded. The maintenance personnel closes the floor door and completes the inspection.
[0030] The utility model provides a first support rod and a second support rod on the elevator car top, and the first support rod is hinged to the second support rod, the two support rods are hinged to the elevator car top, and one end of the second support rod can slide on the elevator car top, and the other end can slide along the first support rod. When maintenance personnel enter the car top for maintenance, the second support rod is pushed to move, so that the second support rod props up the first support rod, and after propping up, the first support rod and the second support rod form a triangular support structure, and finally the support structure is fixed by a limiting structure to ensure that the propping height of the support structure reaches a preset maintenance safety height, which plays a good supporting and anti-top impact role, thereby ensuring the safety of maintenance personnel.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.
Claims
1. A low-rise elevator maintenance and protection device, characterized in that : It includes a slide rail, a first support rod and a second support rod arranged on the elevator car top, one end of the first support rod is hinged to a fixed base fixedly installed on the elevator car top through a first rotating shaft, and the other end is a free end, and a first slide seat is installed on the first support rod, and the first slide seat is connected with the first support rod in a sliding manner so that it can move along the length direction of the first support rod; one end of the second support rod is hinged to a second slide seat installed on the slide rail in a sliding manner through a second rotating shaft, so that the end can move in a direction close to or away from the fixed base, and the other end is hinged to the first slide seat; When the second slide moves from one end of the slide rail away from or close to the fixed base to the other end, the first slide moves from one end of the first support rod close to or away from the fixed base to the other end, and the height between the free end of the first support rod and the elevator car top changes from the minimum height to the maximum height or from the maximum height to the minimum height; It also includes a limiting structure, which can limit the movement of the first slide or the second slide, or the rotation of the first strut, or the rotation of the second strut when the height between the free end of the first strut and the elevator car top is the maximum height.
2. A low-rise elevator maintenance and protection device according to claim 1, characterized in that: When the height between the free end of the first support rod and the elevator car top reaches the maximum height, the angle between the second support rod and the rod section on one side of the first support rod close to the fixed base is less than 90 degrees.
3. A low-rise elevator maintenance and protection device according to claim 1, characterized in that: It also includes a first driving mechanism, which is connected to the second slide seat and is used to drive the second slide seat to move along the slide rail.
4. A low-rise elevator maintenance and protection device according to claim 3, characterized in that: The first driving mechanism comprises a first hydraulic mechanism installed on the elevator car roof, which has a telescopic hydraulic rod, and the end of the hydraulic rod is connected to the second sliding seat.
5. The low-top elevator maintenance and protection device according to claim 3 is characterized by: The limiting structure includes a second hydraulic mechanism installed on the second slide, which has a retractable hydraulic push rod. Correspondingly, a limiting hole is provided on the slide rail. When the second slide moves to one end of the slide rail close to the fixed base, the hydraulic push rod is opposite to the limiting hole and can be inserted into the limiting hole.
6. A low-rise elevator maintenance and protection device according to claim 5, characterized in that: A first detection switch and a second detection switch are respectively installed at both ends of the first support rod. When the first slide contacts the first detection switch, the first drive mechanism can stop running, and the second hydraulic mechanism can be activated to drive the hydraulic push rod to insert into the limit hole. When the first slide contacts the second detection switch, the first drive mechanism can stop running.
7. A maintenance and protection device for a low-rise elevator according to claim 6, characterized in that: It also includes an elevator top floor door, which is provided with a door lock and a door lock switch that cooperates with the door lock. When the door lock is unlocked and the door lock switch is actuated, the first drive mechanism can start running. When the door lock is locked and the door lock switch is actuated, the second hydraulic mechanism can be actuated to drive the hydraulic push rod to exit the limit hole and the first drive mechanism can start running.
8. The low-top elevator maintenance and protection device according to claim 1 is characterized by: A support plate is hingedly connected to the free end of the first support rod.