An over-limit stop device

Abstract

This utility model discloses an upper limit stopping device, including a locking rod, a first detector, and a trigger rod. The locking rod is installed in the cavity of the upper beam of the car frame and has a first position and a second position that can be switched between each other. The first detector is installed at the top of the guide rail and has a control end and a trigger end. The control end is connected to the elevator control system. The trigger rod is movably installed on the guide rail and one end is opposite to the trigger end. The car can move up and down normally when the locking rod is in the first position, or the car can drive the locking rod to push the trigger rod to trigger the trigger end when the locking rod is in the second position, so that the control end sends a stop signal to the elevator control system. The above structure provides sufficient maintenance space between the top of the car and the top of the elevator shaft to ensure the safety of maintenance personnel.

Description

Technical Field

[0001] This utility model relates to the field of elevators, and in particular to an upper limit stopping device. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building. Its car moves on at least two rigid tracks that are perpendicular to the horizontal plane or have an angle of inclination of less than 15° to the vertical. The car is the box-shaped space used by the elevator to carry and transport people and goods.

[0003] Elevators require regular maintenance to eliminate potential safety hazards. A car top locking device will be installed as a safety technology to protect maintenance personnel and equipment on the car top as a maintenance platform. However, this locking device is only suitable for static operations, where maintenance personnel lock the car inside the elevator shaft for maintenance in a static state. However, maintenance personnel also need to inspect facilities within the elevator shaft, which involves working on top of the car as it moves up and down. Sufficient safety space must be maintained between the top of the car and the top of the elevator shaft to ensure the safety of maintenance personnel. Currently, due to building floor spacing limitations and insufficient top floor height, the maintenance space for existing elevators cannot meet standard requirements. Current devices used to stop elevator operation for maintenance safety are bulky and structurally complex, occupying top floor space and failing to meet the requirements of ease of operation and safety during maintenance in low-ceilinged buildings.

[0004] Therefore, there is an urgent need for an upper limit stopping device to solve the above problems. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an upper limit stopping device.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an upper limit stopping device, including a locking rod, a first detector and a trigger rod;

[0007] The locking rod is installed in the cavity of the upper beam of the car frame and has a first position and a second position that can be switched between each other;

[0008] The first detector is installed at the top of the guide rail and has a control end and a trigger end. The control end is connected to the elevator control system.

[0009] The trigger lever is movably mounted on the guide rail with one end opposite to the trigger end;

[0010] The car can move up and down normally when the locking lever is in the first position, or the car can drive the locking lever to push the trigger rod to trigger the trigger end when the locking lever is in the second position, so that the control end sends a stop signal to the elevator control system.

[0011] As one of the preferred embodiments of this utility model, the upper beam of the car frame is provided with horizontally arranged strip holes, and the strip holes are provided with first slots and second slots at intervals. The first slots constitute a first position, and the second slots constitute a second position.

[0012] As one of the preferred embodiments of this utility model, a second detector connected to the elevator control system is provided in the cavity of the upper beam of the car frame. The second detector is used to detect whether the locking rod is in the second position.

[0013] In one of the preferred embodiments of this utility model, the first detector is configured as a first limit switch.

[0014] In one of the preferred embodiments of this utility model, the second detector is configured as a second limit switch.

[0015] As one of the preferred embodiments of this utility model, the locking rod also has a third position in the cavity of the upper beam of the car frame, and a third groove is provided on the strip hole. The third groove constitutes the third position. A locking plate with a locking hole is provided on the guide rail. The locking rod can be inserted into the locking hole when it is in the third position to restrict the relative movement between the car and the guide rail.

[0016] As one of the preferred embodiments of this utility model, a third detector connected to the elevator control system is provided in the cavity of the upper beam of the car frame. The third detector is used to detect whether the locking rod is in the third position.

[0017] In one of the preferred embodiments of this utility model, the third detector is configured as a third limit switch.

[0018] As one of the preferred embodiments of this utility model, the guide rail is provided with a sliding groove arranged along its height direction, and the trigger rod is slidably disposed in the sliding groove.

[0019] As one of the preferred embodiments of this utility model, a buffer pad is provided at the other end of the trigger rod.

[0020] The beneficial effects of this utility model are as follows: An upper limit stopping device includes a locking rod, a first detector, and a trigger rod; the locking rod is installed in the cavity of the upper beam of the car frame and has a first position and a second position that can be switched between each other; the first detector is installed at the top of the guide rail and has a control end and a trigger end, the control end being connected to the elevator control system; the trigger rod is movably installed on the guide rail and one end is opposite to the trigger end; the car can move normally up and down when the locking rod is in the first position, or the car can drive the locking rod to push the trigger rod to trigger the trigger end when the locking rod is in the second position, so that the control end sends a stop signal to the elevator control system; the above structure provides sufficient maintenance space between the top of the car and the top of the elevator shaft to ensure the safety of maintenance personnel. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 A schematic diagram of the first structure of an upper limit stopping device;

[0023] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0024] Figure 3 A schematic diagram of the second structure of an upper limit stopping device;

[0025] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Reference Figures 1-4 An upper limit stopping device includes a locking rod 10, a first detector 20, and a trigger rod 30;

[0031] The locking rod 10 is installed in the cavity of the upper beam 42 of the car frame of the car 41 and has a first position and a second position that can be switched between each other;

[0032] The first detector 20 is installed at the top of the guide rail 43 and has a control terminal 21 and a trigger terminal 22. The control terminal 21 is connected to the elevator control system.

[0033] The trigger rod 30 is movably mounted on the guide rail 43 and one end is opposite to the trigger end 22;

[0034] The car 41 can move up and down normally when the locking lever 10 is in the first position, or the car 41 can drive the locking lever 10 to push the trigger lever 30 to trigger the trigger end 22 when the locking lever 10 is in the second position, so that the control end 21 sends a stop signal to the elevator control system.

[0035] In this invention, when the elevator needs maintenance, maintenance personnel open the hall door and enter the top of the car 41. They then operate the locking lever 10, which is in the first position, to the second position. The locking lever 10 extends outward from the car 41 and is located below the trigger lever 30 and opposite the other end of the trigger lever 30. The elevator can be started if safety is ensured, and the car 41 moves up and down. When the car 41 approaches the first detector 20, the locking lever 10 will touch the other end of the trigger lever 30, pushing the trigger lever 30 upward. This causes the other end of the trigger lever 30 to trigger the trigger end 22 of the first detector 20. The control terminal 21 sends a stop signal to the elevator control system, preventing the car 41 from moving upward and allowing it to move downward. In other words, the car 41 stops moving upward when it reaches the position of the first detector 20. This design ensures sufficient maintenance space in elevator shafts with small floor-to-floor spacing, guaranteeing the safety of maintenance personnel.

[0036] Reference Figures 1-4 In some embodiments, a horizontally arranged strip hole 50 is provided on the cavity of the upper beam 42 of the car frame. A first slot 51 and a second slot 52 are provided at intervals on the strip hole 50. The first slot 51 constitutes a first position, and the second slot 52 constitutes a second position. When the elevator is running normally, the locking rod 10 is located in the first slot 51, which does not affect the elevator's up and down movement. When the elevator needs to be inspected, the locking rod 10 is moved to the second slot 52. At this time, the locking rod 10 extends out of the car 41 and is opposite to the other end of the trigger rod 30.

[0037] Reference Figures 1-4In some embodiments, a second detector 60 connected to the elevator control system is provided in the cavity of the upper beam 42 of the car frame. The second detector 60 is used to detect whether the locking rod 10 is in the second position. Preferably, the first detector 20 is set as a first limit switch and the second detector 60 is set as a second limit switch. By using the second detector 60 to detect whether the locking rod 10 is accurately located in the second position, it is possible to prevent maintenance personnel from starting the elevator without properly operating the locking rod 10, thereby further ensuring safety.

[0038] Reference Figures 1-4 In some embodiments, the locking rod 10 also has a third position in the cavity of the upper beam 42 of the car frame, and a third groove 53 is provided on the strip hole 50. The third groove 53 constitutes the third position. A locking plate 70 with a locking hole 71 is provided on the guide rail 43. The locking rod 10 can be inserted into the locking hole 71 when it is in the third position to restrict the relative movement between the car 41 and the guide rail 43.

[0039] Reference Figures 1-4 In some embodiments, a third detector 80 connected to the elevator control system is provided in the cavity of the upper beam 42 of the car frame. The third detector 80 is used to detect whether the locking rod 10 is in the third position. Preferably, the third detector 80 is set as a third limit switch. The second detector 60 is used to detect whether the locking rod 10 is accurately located in the second position, so as to avoid the maintenance personnel starting the elevator without operating the locking rod 10 properly, and further ensure safety.

[0040] Reference Figures 1-4 In some embodiments, the guide rail 43 is provided with a slide groove 90 arranged along its height direction. The trigger rod 30 is slidably disposed in the slide groove 90. Further, the trigger rod 30 includes a top rod, a push rod, and a connecting rod. The top rod is located on the side of the slide groove 90 close to the car 41, the push rod is located on the side of the slide groove 90 away from the car 41, and the connecting rod passes through the slide groove 90 and is connected to the top rod and the push rod respectively. The first detector 20 is installed on the side of the slide groove 90 away from the car 41 and is opposite to the push rod. The top rod is opposite to the locking rod 10. Under normal conditions, the connecting rod is located at the bottom end of the slide groove 90. The locking rod 10 can push the top rod to move upward, thereby driving the push rod through the connecting rod to trigger the trigger end 22 of the first detector 20.

[0041] Reference Figures 1-4 In some embodiments, the other end of the trigger rod 30 is provided with a buffer pad 31, which can absorb the energy of the lock rod 10 impacting the trigger rod 30.

[0042] The advantage of this utility model is that the above structure provides sufficient maintenance space between the top of the car and the top of the elevator shaft, thus ensuring the safety of maintenance personnel.

[0043] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. An upper limit stopping device, characterized in that: Includes a locking lever (10), a first detector (20), and a trigger lever (30); The locking rod (10) is installed in the cavity of the upper beam (42) of the car frame of the car (41) and has a first position and a second position that can be switched between each other; The first detector (20) is installed on the top of the guide rail (43) and has a control terminal (21) and a trigger terminal (22). The control terminal (21) is connected to the elevator control system. The trigger rod (30) is movably mounted on the guide rail (43) and one end is opposite to the trigger end (22); The car (41) can move up and down normally when the locking rod (10) is in the first position, or the car (41) can drive the locking rod (10) to push the trigger rod (30) to trigger the trigger end (22) when the locking rod (10) is in the second position, so that the control end (21) sends a stop signal to the elevator control system.

2. The upper limit stopping device according to claim 1, characterized in that: The upper beam (42) of the sedan frame is provided with horizontally arranged strip holes (50). The strip holes (50) are provided with a first slot (51) and a second slot (52) at intervals. The first slot (51) constitutes the first position, and the second slot (52) constitutes the second position.

3. The upper limit stopping device according to claim 1, characterized in that: The upper beam (42) of the car frame is provided with a second detector (60) connected to the elevator control system. The second detector (60) is used to detect whether the locking rod (10) is in the second position.

4. The upper limit stopping device according to claim 1, characterized in that: The first detector (20) is configured as a first limit switch.

5. The upper limit stopping device according to claim 3, characterized in that: The second detector (60) is configured as a second limit switch.

6. The upper limit stopping device according to claim 2, characterized in that: The locking rod (10) also has a third position in the cavity of the upper beam (42) of the car frame. A third slot (53) is also provided on the strip hole (50). The third slot (53) constitutes the third position. A locking plate (70) with a locking hole (71) is provided on the guide rail (43). The locking rod (10) can be inserted into the locking hole (71) when it is in the third position to restrict the relative movement between the car (41) and the guide rail (43).

7. The upper limit stopping device according to claim 6, characterized in that: The upper beam (42) of the car frame is equipped with a third detector (80) connected to the elevator control system. The third detector (80) is used to detect whether the locking rod (10) is in the third position.

8. The upper limit stopping device according to claim 7, characterized in that: The third detector (80) is configured as a third limit switch.

9. The upper limit stopping device according to claim 1, characterized in that: The guide rail (43) is provided with a slide groove (90) arranged along its height direction, and the trigger rod (30) is slidably disposed in the slide groove (90).

10. The upper limit stopping device according to claim 1, characterized in that: A buffer pad (31) is provided at the other end of the trigger rod (30).

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