Lifting point connecting structure between lifting cage and driving frame of elevator

Abstract

The utility model relates to the technical field of lifters, in particular to a lifting point connecting structure between a lifting cage and a driving frame of a lifter, which comprises a connecting lug plate of the driving frame and a lifting cage lug plate, and a connecting piece consisting of a first connecting plate, a second connecting plate and a sensing pin is hinged between the lifting cage lug plate and the connecting lug plate; the traditional hard connection mode is changed, the influence of vibration of a driving system on the cage is reduced, and the cage runs more stably; the first connecting plate and the second connecting plate of the connecting piece are connected through the two sensing pins, and the situation that the bearing capacity borne by a single sensing pin is too large and exceeds the upper limit, and detection cannot be met can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a suspension point connection structure between an elevator cage and a driving frame. Background Art

[0002] A construction elevator is a vertical lifting and transportation device widely used in construction. A construction elevator generally consists of a guide rail frame, a cage, and a driving system. The guide rail frame is composed of several standard section steel frames, and the cage is a cuboid frame cage formed by welding steel structures; the driving system is formed by combining a motor, a speed reducer, a driving frame, and an output gear; the driving system and the cage are both installed with guide wheels and coupled with the standard sections of the guide rail frame; the driving system is connected to the cage through two hinge points of the driving frame. When the driving system works, the driving output gear makes relative motion with the rack installed on the standard section, driving the cage to move up and down along the standard section, so as to realize vertical transportation operations.

[0003] In order to ensure safe production and avoid major safety accidents caused by overloading, overload protectors are usually installed on common construction elevators. As a kind of overload protector, a sensing pin is widely used in the connection between the cage and the driving system to detect the weight of the cage and prevent the cage from overloading. For example, in the "Precise positioning device for a sensing pin of a construction elevator" with the publication number CN 203033581 U, most elevators use a single sensing pin to achieve single-point hard connection. After some heavy-duty large cage elevators carry goods, the total weight is likely to exceed the maximum load-bearing model of the existing sensing pins, resulting in the situation that the sensing pins cannot meet the detection requirements; at the same time, when the gear and rack meshing is unstable during the operation of the cage, causing vibration of the driving system, the vibration will spread the vibration of the driving system to the cage through the connection point and be amplified in the vibration intensity. Therefore, a suspension point connection structure between an elevator cage and a driving frame is proposed. Summary of the Utility Model

[0004] The utility model aims to solve the above problems, and thus provides a suspension point connection structure between an elevator cage and a driving frame.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows:

[0006] A suspension point connection structure between an elevator cage and a driving frame includes a connecting ear plate of the driving frame and a cage ear plate, and is characterized in that: a connecting member is arranged between the connecting ear plate and the cage ear plate, and the connecting member is respectively hinged to the connecting ear plate and the cage ear plate.

[0007] Further, the connecting member includes a first connecting plate and second connecting plates. There are two second connecting plates. The top of the first connecting plate is located between the bottoms of the two second connecting plates and is connected by a sensing pin provided. There are two sensing pins arranged at the same height; a pair of cage lugs are arranged in parallel. The bottom of the first connecting plate is located between the two cage lugs and is hinged to the cage lugs through a first pin shaft provided. The tops of the two second connecting plates are located on both sides of the connecting lug and are hinged to the connecting lug through a second pin shaft provided.

[0008] Further, the two sensing pins are symmetrically distributed on both sides of the central connection line of the first pin shaft and the second pin shaft; the bearing capacity received by the sensing pins is evenly divided to prevent the bearing capacity received by a single sensing pin from being too large and being easily damaged.

[0009] The utility model adopting the above technical solution, compared with the prior art, its prominent feature is:

[0010] The utility model is provided with a connecting member between the cage lug and the connecting lug, and is respectively hinged to the cage lug and the connecting lug, changing the previous hard connection method, reducing the influence of the vibration of the driving system on the cage, and making the cage run more smoothly; the first connecting plate and the second connecting plate of the connecting member are connected by two sensing pins, which can avoid the situation that the bearing capacity received by a single sensing pin is too large and exceeds the upper limit and cannot meet the detection. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the use state of the embodiment of the utility model;

[0012] Figure 2 is an embodiment of the utility model Figure 1 is a partial enlarged structural diagram of part A in the embodiment;

[0013] The reference numerals in the figure are: guide rail frame 1, driving frame 2, cage 3, connecting lug 4, cage lug 5, first connecting plate 6, second connecting plate 7, first pin shaft 8, second pin shaft 9, sensing pin 10. Detailed Embodiment

[0014] The following further illustrates the utility model in conjunction with the embodiments. The purpose is only to better understand the content of the utility model. Therefore, the examples given do not limit the protection scope of the utility model.

[0015] See Figures 1-2 , a suspension point connection structure between a cage of a lift and a driving frame, including a connecting lug 4 and a cage lug 5 of the driving frame 2. A connecting member is provided between the connecting lug 4 and the cage lug 5, and the connecting member is respectively hinged to the connecting lug 4 and the cage lug 5.

[0016] Furthermore, the connecting member includes a first connecting plate 6 and second connecting plates 7. There are two second connecting plates 7. The top of the first connecting plate 6 is located between the bottoms of the two second connecting plates 7 and is connected by a sensing pin 10 provided. There are two sensing pins 10 arranged at the same height; a pair of cage lugs 5 are arranged in parallel. The bottom of the first connecting plate 6 is located between the two cage lugs 5 and is hinged to the cage lugs 5 by a first pin shaft 8 provided. The tops of the two second connecting plates 7 are located on both sides of the connecting lug 4 and are hinged to the connecting lug 4 by a second pin shaft 9 provided.

[0017] The two sensing pins 10 are symmetrically distributed on both sides of the central connection line between the first pin shaft 8 and the second pin shaft 9; the bearing capacity received by the sensing pins 10 is evenly divided, preventing the bearing capacity received by a single sensing pin 10 from being too large and being easily damaged.

[0018] When the present utility model is in use, the cage 3 moves up and down along the guide rail frame 1 driven by the drive system. The connecting member composed of the first connecting plate 6, the second connecting plate 7 and the sensing pin 10 is hinged between the cage lug 5 and the connecting lug 4. When the meshing of the gear and the rack is unstable and causes the drive system to vibrate, the connecting member will swing above the cage 3, reducing the influence of the vibration of the drive system on the cage 3, and the cage 3 runs more smoothly.

[0019] The present utility model provides a connecting member between the cage lug and the connecting lug, which is respectively hinged to the cage lug and the connecting lug, changing the previous rigid connection method, reducing the influence of the vibration of the drive system on the cage, and making the cage run more smoothly; the first connecting plate and the second connecting plate of the connecting member are connected by two sensing pins, which can avoid the situation that the bearing capacity received by a single sensing pin is too large and exceeds the upper limit, unable to meet the detection requirements.

[0020] The above are only the preferred and feasible embodiments of the present utility model, and do not limit the scope of the rights of the present utility model. Any equivalent changes made by using the description and drawings of the present utility model are included in the scope of the rights of the present utility model.

Claims

1. A lifting point connection structure between a hoist cage and a driving frame, comprising a connecting ear plate of the driving frame and a hoist cage ear plate, characterized in that: A connecting piece is arranged between the connecting ear plate and the hanging cage ear plate, and the connecting piece is hinged to the connecting ear plate and the hanging cage ear plate respectively.

2. The suspension point connection structure between the elevator cage and the driving frame according to claim 1, characterized in that: The connecting member includes a first connecting plate and a second connecting plate, and the second connecting plates are provided in two pieces. The top of the first connecting plate is located between the bottoms of the two second connecting plates and are connected by a set sensor pin, and two sensor pins are provided at the same height; a pair of cage ear plates are provided in parallel, and the bottom of the first connecting plate is located between the two cage ear plates and is hinged to the cage ear plates by a set first pin shaft, and the tops of the two second connecting plates are located on both sides of the connecting ear plates and are hinged to the connecting ear plates by a set second pin shaft.

3. The suspension point connection structure between the elevator cage and the driving frame according to claim 2, characterized in that: The two sensing pins are symmetrically distributed on both sides of a line connecting the centers of the first pin shaft and the second pin shaft.

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