Liftable rope head device

Abstract

The utility model relates to the technical field of elevators, and particularly discloses a liftable rope hitch device which is used for being connected with an elevator car and comprises a fixing plate, a rope hitch device and a rope hitch device, the lifting driving part is arranged above the fixing plate; the rope head assembly comprises a bearing plate connected with the driving part of the lifting driving part, a rope wheel which is rotatably arranged on the bearing plate around the center of the rope wheel, a steel wire rope which bypasses the rope wheel and is used for being connected with an elevator car, and a rope head body connected to the steel wire rope; according to the lifting rope head device, the problem that the leveling position of the lift car is affected due to elastic stretching and retracting of the steel wire rope caused by load change of the lift car can be solved, large in-out difficulty caused by an AGV or a transport vehicle and the like is avoided, and the risk that passengers are stumbled is avoided even if the passengers are stumbled; the heat dissipation of the traction machine and the brake and the service life of a brake spring are not affected, and high use value is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a liftable rope end device. Background Art

[0002] The steel wire rope used in elevators will undergo a certain degree of elastic expansion and contraction as the weight of the car is loaded and unloaded. This expansion and contraction can vary from a few millimeters to tens of millimeters depending on conditions such as load and lifting height.

[0003] After the car is leveled, the load changes due to people or goods entering and exiting the car, which causes the elastic expansion and contraction of the wire rope, resulting in a change in the position of the car, thereby causing a height difference between the car and the landing station.

[0004] The height difference will cause great difficulty for AGVs or transport vehicles to enter and exit, and even pose a risk of tripping for passengers.

[0005] The traditional solution is to use the door-opening re-leveling function, which relies on starting the traction motor to readjust the leveling. However, the traction motor and traction motor brake are both operating at less than 50%. Long-term activation of the re-leveling function has a significant impact on the heat dissipation of the traction motor and brake, as well as the service life of the brake spring.

[0006] In order to solve the above problems, the present application discloses a liftable rope head device. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the present application discloses a liftable rope head device.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is: a hoistable rope head device for connecting to an elevator car, comprising:

[0009] A fixing plate, the fixing plate being used to be fixed to the top platform of the elevator car shaft;

[0010] A lifting drive member, the lifting drive member is arranged above the fixed plate;

[0011] The rope end assembly includes a supporting plate connected to the driving part of the lifting drive member, a rope pulley rotatable around its center on the supporting plate, a steel wire rope wrapped around the rope pulley for connecting to the elevator car, and a rope end body connected to the steel wire rope.

[0012] Further preferably, two guide rails are provided above the fixing plate opposite to each other, and the supporting plate is slidably connected to the two guide rails.

[0013] Further preferably, the lifting drive member is a hydraulic push rod, and the bearing plate is connected to the piston rod of the hydraulic push rod.

[0014] It is further preferred that the length of the steel wire rope is twice the stroke of the hydraulic push rod.

[0015] It is further preferred that a control component is further included, and the control component includes a door area detection plate provided on the side wall of the elevator car shaft and an upper leveling sensor and a lower leveling sensor provided on the elevator car.

[0016] It is further preferred that an elevator control system is further included, and the lifting drive component, the upper leveling sensor and the lower leveling sensor are communicatively connected to the elevator control system.

[0017] This application achieves the following beneficial effects:

[0018] The liftable rope head device provided in the application can solve the problem of elastic expansion and contraction of the wire rope caused by changes in the car load, thereby affecting the level position of the car, avoiding the relatively large entry and exit difficulties caused by AGVs or transport vehicles, and there will be no risk of tripping even for passengers. It will not affect the heat dissipation of the traction machine and brake and the life of the brake spring, and has high use value.

[0019] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure of the present application and, together with the description, serve to explain the principles of the disclosure.

[0021] Figure 1 A schematic diagram of the overall structure disclosed in this application;

[0022] Figure 2 This is a schematic diagram of the layout of the control components disclosed in this application;

[0023] In the figure: 10, fixed plate; 20, lifting drive member; 30, rope head assembly; 31, bearing plate; 32, rope pulley; 33, wire rope; 34, rope head body; 35, guide rail; 40, control assembly; 41, door area detection plate; 42, upper leveling sensor; 43, lower leveling sensor. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0025] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application.

[0026] Example

[0027] In order to solve the problem in the prior art that the steel wire rope 33 elastically expands and contracts due to the load change of the elevator car, thereby affecting the leveling position of the car, Figure 1 and Figure 2 As shown, the present application discloses a liftable rope head device for connecting to an elevator car, comprising:

[0028] A fixing plate 10 is used to fix to the top platform of the elevator car shaft;

[0029] The lifting drive member 20 is provided above the fixed plate 10;

[0030] The rope end assembly 30 includes a supporting plate 31 connected to the driving part of the lifting drive member 20, a sheave 32 rotatable around its center on the supporting plate 31, a steel wire rope 33 wrapped around the sheave 32 for connecting to the elevator car, and a rope end body 34 connected to the steel wire rope 33.

[0031] In addition to the above structure, the present application also includes a control component 40, which includes a door area detection plate 41 provided on the side wall of the elevator car shaft and an upper leveling sensor 42 and a lower leveling sensor 43 provided on the elevator car.

[0032] And also includes an elevator control system, which is a system built into the elevator. During specific implementation, the lifting drive 20, the upper leveling sensor 42 and the lower leveling sensor 43 are communicatively connected with the elevator control system.

[0033] During normal leveling, both the upper leveling sensor 42 and the lower leveling sensor 43 enter the range of the door area detection plate 41 , and both the upper leveling sensor 42 and the lower leveling sensor 43 sense the door area detection plate 41 and send out an upper leveling signal and a lower leveling signal.

[0034] When the car load changes and causes the wire rope 33 to expand and contract, the car will move up and down. When the car moves up, the upper leveling sensor 42 separates from the door area detection plate 41, and the upper leveling signal disappears. At this time, the push rod pushes the load-bearing plate 31 down until the upper leveling sensor 42 returns to the door area detection plate 41. After receiving the upper leveling signal, the elevator control system immediately stops the push rod and keeps it stationary.

[0035] Similarly, when the car moves downward, the lower leveling sensor 43 separates from the door area detection plate 41 and the lower leveling signal disappears; at this time, the push rod pushes the bearing plate 31 upward until the lower leveling sensor 43 returns to the door area detection plate 41. After the elevator control system receives the lower leveling signal, it immediately stops the push rod and keeps it stationary.

[0036] In this embodiment, two guide rails 35 are relatively provided above the fixed plate 10, and the supporting plate 31 is slidably connected to the two guide rails 35. Under the drive of the lifting drive 20, the supporting plate 31 can slide on the two guide rails 35, so that the rope head assembly 30 can be lifted and lowered smoothly.

[0037] As a preferred embodiment of the present application, the lifting drive component 20 of the present application is a hydraulic push rod, and the supporting plate 31 is connected to the piston rod of the hydraulic push rod. In specific use, if there are other types of lifting drive components 20 that can replace the hydraulic push rod to meet the use requirements of the present application, personnel in this technical field can adaptably select them.

[0038] In this embodiment, the length of the steel wire rope 33 is twice the stroke of the hydraulic push rod. In this way, the overall dimensions of the lifting rope head device can be reduced while improving the operating efficiency.

[0039] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] The above embodiments are intended only to illustrate the technical concepts and features of this application. Their purpose is to enable those skilled in the art to understand the content of this application and implement it accordingly. They are not intended to limit the scope of protection of this application. Any equivalent changes or modifications made in accordance with the spirit of this application shall be included in the scope of protection of this application.

Claims

1. A hoistable rope head device for connecting to an elevator car, characterized in that: include: A fixing plate (10), the fixing plate (10) being used to be fixed to a top platform of an elevator car shaft; A lifting drive member (20), wherein the lifting drive member (20) is arranged above the fixed plate (10); A rope end assembly (30) includes a supporting plate (31) connected to a driving portion of a lifting drive member (20), a rope pulley (32) rotatably arranged on the supporting plate (31) around its center, a steel wire rope (33) passing around the rope pulley (32) for connecting to an elevator car, and a rope end body (34) connected to the steel wire rope (33).

2. A scissor-type rope head device according to claim 1, characterized in that: Two guide rails (35) are arranged opposite to each other above the fixing plate (10), and the carrying plate (31) is slidably connected to the two guide rails (35).

3. A scissor-type rope head device according to claim 1, characterized in that: The lifting drive member (20) is a hydraulic push rod, and the bearing plate (31) is connected to the piston rod of the hydraulic push rod.

4. A scissor-type rope head device according to claim 3, characterized in that: The length of the steel wire rope (33) is twice the stroke of the hydraulic push rod.

5. A raisable rope head device according to any one of claims 1 to 4, characterized in that: The invention also includes a control component (40), wherein the control component (40) includes a door area detection plate (41) arranged on the side wall of the elevator car shaft, and an upper leveling sensor (42) and a lower leveling sensor (43) arranged on the elevator car.

6. A raisable rope head device according to claim 5, characterized in that: It also includes an elevator control system, and the lifting drive member (20), the upper leveling sensor (42) and the lower leveling sensor (43) are communicatively connected to the elevator control system.

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