Elevator car anti-falling device

Abstract

The utility model relates to the technical field of lifting equipment, and discloses an elevator car anti-falling device which comprises a vertical supporting frame, the lowermost end of the vertical supporting frame is connected with a bottom support, the vertical supporting frame is installed in an elevator frame through a bearing seat, and a rotation adjusting structure is arranged at the bottom of the vertical supporting frame. A rotation adjusting structure is arranged on the elevator frame, a locking structure is arranged at the position, corresponding to the rotation adjusting structure, of the elevator frame, a proximity switch support is arranged beside the locking structure, a proximity switch is arranged on the proximity switch support, and the proximity switch is connected with an alarm. Personnel safety is guaranteed, and the use state of the control device is convenient to adjust.

Description

Technical Field

[0001] The present application relates to the technical field of lifting equipment, and in particular to a device for preventing a lift car from falling. Background Art

[0002] Vertical hoist is a heavy-duty conveying equipment used to transport materials vertically between upper and lower floors. It is generally a frame structure. Its car (cargo platform) is generally suspended on a transmission chain. The power is transmitted to the shaft of the transmission device through the reduction motor on the top. The sprocket on the shaft drives the chain to lift or lower the car, and under the protection and detection of the position detection device, it ensures that the material is transported smoothly and safely in the vertical direction.

[0003] Since the weight of the car is relatively heavy, when the car is raised to the top for maintenance, whether the personnel are standing on the car or entering under the car, it is very important to prevent the car from falling suddenly and ensure the safety of the personnel. At present, the relevant anti-fall safety devices have various structures such as electromagnetic and electromechanical, but most of them are complex in structure and high in cost.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the utility model is to provide a device for preventing the elevator car from falling suddenly when personnel enter the elevator, thereby ensuring the safety of personnel and facilitating the adjustment of the use status of the control device.

[0006] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions:

[0007] An anti-fall device for a hoist car, comprising a vertical support frame, the bottom end of the vertical support frame is connected to a bottom support, the vertical support frame is rotatably installed in a hoist frame through a bearing seat, a rotation adjustment structure is arranged at the bottom of the vertical support frame, the rotation adjustment structure adjusts the rotation direction of the vertical support frame, a locking structure is arranged on the hoist frame corresponding to the position of the rotation adjustment structure, and the locking structure fixes the position of the vertical support frame;

[0008] The rotation adjustment structure is also provided with a proximity switch for detecting its adjustment state, and the proximity switch is electrically connected to the alarm.

[0009] Optionally, the rotation adjustment structure includes a handle, a first locking plate and a second locking plate, the first locking plate is perpendicular to the handle, the second locking plate is parallel to the handle, and the handle, the first locking plate and the second locking plate are connected to the bottom end of the vertical support frame.

[0010] Optionally, the locking structure includes a locking bracket and a long beam lock, the long beam lock is arranged on the elevator frame, and the long beam lock can pass through the locking bracket.

[0011] Optionally, the bottom support is fixedly connected to the hoist frame.

[0012] Optionally, the top of the vertical support frame includes a long round rod, a cross bar and an inclined bar, one end of the inclined bar is connected to the cross bar and the other end is connected to the long round rod as a cross bar reinforcement rib, and the cross bar is connected to the top of the long round rod.

[0013] Optionally, the long round rod is rotatably connected to the hoist frame through a plurality of bearing seats.

[0014] Optionally, the bottom support is fixed on a crossbeam of a fixed frame of the elevator, a circular ring is provided on the upper surface of the bottom support, a long circular tube is sleeved in the circular ring, and reinforcing ribs are provided under the bottom support to improve the strength of the bottom support.

[0015] Optionally, locking holes are provided on the first locking piece and the second locking piece.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This device prevents the elevator car from falling suddenly when people enter the elevator, ensuring the safety of personnel;

[0018] 2. By observing the state of the handle of the device, you can directly judge whether the top support crossbar is in the open or retracted state, and it can be directly adjusted by the handle for easy control;

[0019] 3. The proximity switch at the bottom of the device plays an electrical safety interlocking protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is an overview of a hoist car anti-fall device provided by the utility model;

[0022] Figure 2 This is a bottom detail diagram of a hoist car anti-fall device provided by the utility model;

[0023] Figure 3This is a bottom structural diagram of a vertical support frame of a lift car anti-fall device provided by the utility model;

[0024] Figure 4 This is a top structural diagram of a vertical support frame of a lift car anti-fall device provided by the utility model;

[0025] Figure 5 The utility model discloses a bottom support structure diagram of a hoist car anti-fall device.

[0026] Description of reference numerals:

[0027] 1. Vertical support frame; 2. Bottom support; 3. Bearing seat; 4. Hoist car; 5. Hoist frame; 6. Proximity switch; 7. Proximity switch bracket; 8. Locking bracket; 9. Long beam lock; 11. Long round tube; 12. Handle; 13. First locking plate; 14. Second locking plate; 15. Cross bar; 16. Diagonal bar. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Example

[0029] A lifting machine car anti-fall device, such as Figure 1 and Figure 2 As shown, it includes a vertical support frame 1, the bottom end of the vertical support frame 1 is connected to a bottom support 2, the vertical support frame 1 is rotatably installed in the hoist frame 5 through a bearing seat 3, a rotation adjustment structure is provided at the bottom of the vertical support frame 1, the rotation adjustment structure adjusts the rotation direction of the vertical support frame 1, and a locking structure is provided on the hoist frame 5 corresponding to the rotation adjustment structure position, the locking structure fixes the position of the vertical support frame 1, and the rotation adjustment structure is also provided with a proximity switch 6 for detecting its adjustment state, and the proximity switch 6 is electrically connected to the alarm. When the hoist car 4 rises, the direction of the vertical support frame 1 is rotated by the rotation adjustment structure, so that The vertical support frame 1 is rotated to the bottom of the elevator car 4. At this time, the vertical support frame 1 is opened. After the elevator car 4 descends, the vertical support frame 1 is rotated to fit the elevator frame 5. At this time, the vertical support frame 1 is retracted, and the rotation adjustment structure corresponds to the locking structure, so that the entire vertical support frame 1 is locked to ensure the stability of the vertical support frame 1. When the vertical support frame 1 is retracted, the proximity switch 6 senses the existence of the rotation adjustment structure, and the alarm does not sound. When the vertical support frame 1 is opened, the proximity switch 6 cannot sense the existence of the rotation adjustment structure, the alarm sounds, and the elevator car 4 and auxiliary equipment are shut down and cannot operate to ensure personnel safety.

[0030] like Figure 3 As shown, the rotation adjustment structure includes a handle 12, a first locking piece 13 and a second locking piece 14. The first locking piece 13 is perpendicular to the handle 12, and the second locking piece 14 is parallel to the handle 12. The handle 12, the first locking piece 13 and the second locking piece 14 are connected to the bottom end of the vertical support frame 1. The first locking piece 13 is fixedly connected to the locking structure in the recovered state to fix the position of the entire vertical support frame 1. The second locking piece 14 is fixedly connected to the locking structure in the opened state. When the vertical support frame 1 is retracted, the proximity switch 6 senses the presence of the rotating handle 12, and the alarm does not sound. When the vertical support frame 1 is opened, the proximity switch 6 cannot sense the presence of the handle 12, the alarm sounds, the elevator car 4 and the auxiliary equipment are shut down and cannot operate, thereby ensuring the safety of personnel.

[0031] like Figure 2 As shown, the locking structure includes a locking bracket 8 and a long beam lock 9. The long beam lock 9 is arranged on the elevator frame 5. The long beam lock 9 can pass through the locking bracket 8. The long beam lock 9 simultaneously passes through the locking hole of the first locking plate 13 or the second locking plate 14 and the hole on the locking bracket 8 to fix the positions of the first locking plate 13 and the second locking plate 14.

[0032] like Figure 2 As shown, the bottom support 2 is fixedly connected to the hoist frame 5 and is used to fix the vertical support frame 1.

[0033] like Figure 4 As shown, the top of the vertical support frame 1 includes a long round rod, a cross piece 15 and an oblique piece 16. One end of the oblique piece 16 is connected to the cross piece 15 and the other end is connected to the long round rod as a reinforcement rib of the cross piece 15. The cross piece 15 is connected to the top of the long round rod. The cross piece 15 is used to support when the elevator car 4 falls. The oblique piece 16 strengthens the supporting strength of the vertical support frame 1. The long round rod is rotatably connected to the elevator frame 5 through a plurality of bearing seats 3. Example

[0034] like Figure 5 As shown, the bottom support 2 is fixed on the crossbeam of the fixed frame of the elevator. There is a circular ring on the upper surface of the bottom support 2, and the long round tube 11 is sleeved in the circular ring. Reinforcing ribs are arranged under the bottom support 2 to improve the strength of the bottom support 2. Under normal circumstances, the bottom and the outer cylindrical surface of the long round tube 11 do not contact the upper surface of the bottom support 2 and the inner surface of the circular ring. A certain distance is left during installation. When the fixing screws between the vertical support frame 1 and the bearing seat 3 loosen and cause the vertical support frame 1 to fall, the bottom support 2 can play a supporting role.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only used to explain the relative position relationship, movement, etc. between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 to the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 this application can be understood by specific circumstances.

[0037] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A hoist car anti-fall device, comprising a vertical support frame, characterized in that: The bottom end of the vertical support frame is connected to a bottom support, the vertical support frame is rotatably mounted in the hoist frame through a bearing seat, a rotation adjustment structure for adjusting the rotation direction of the vertical support frame is provided at the bottom of the vertical support frame, and a locking structure for fixing the position of the vertical support frame is provided on the hoist frame corresponding to the position of the rotation adjustment structure; The rotation adjustment structure is also provided with a proximity switch for detecting its adjustment state, and the proximity switch is electrically connected to the alarm.

2. The elevator car anti-falling device according to claim 1, characterized in that: The rotation adjustment structure includes a handle, a first locking plate and a second locking plate, the first locking plate is perpendicular to the handle, and the second locking plate is parallel to the handle, and the handle, the first locking plate and the second locking plate are connected to the bottom end of the vertical support frame.

3. The elevator car anti-falling device according to claim 1, characterized in that: The locking structure comprises a locking bracket and a long beam lock. The long beam lock is arranged on the hoist frame and the long beam lock can pass through the locking bracket.

4. The elevator car anti-falling device according to claim 1, characterized in that: The bottom support is fixedly connected to the hoist frame.

5. The elevator car anti-falling device according to claim 1, characterized in that: The top of the vertical support frame includes a long round rod, a cross bar and an inclined bar, one end of the inclined bar is connected to the cross bar and the other end is connected to the long round rod as a cross bar reinforcement rib, and the cross bar is connected to the top of the long round rod.

6. The elevator car anti-falling device according to claim 5, characterized in that: The long round rod is rotatably connected to the hoist frame through a plurality of bearing seats.

7. The elevator car anti-falling device according to claim 1, characterized in that: The bottom support is fixed on the crossbeam of the hoist fixed frame. A circular ring is arranged on the upper surface of the bottom support. The long circular tube is sleeved in the circular ring. Reinforcing ribs are arranged under the bottom support to improve the strength of the bottom support.

8. The elevator car anti-falling device according to claim 2, characterized in that: The first locking piece and the second locking piece are provided with locking holes.

9. The elevator car anti-falling device according to claim 1, characterized in that: The proximity switch is arranged beside the locking structure through a proximity switch frame.

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