Elevator Belt Breakage Prevention Structure

Abstract

This invention discloses a fall prevention structure for a lift with a broken belt, comprising a frame, a lifting seat, and a lifting belt for lifting the lifting seat. It also includes a connecting component fixedly connected to the lifting belt, a safety pin mounted on the lifting seat and movable along its own axis, and a pin hole on the frame. The lifting seat and the connecting component are elastically connected by an elastic element, and a pull rod hinged to both the connecting component and the safety pin is provided between them. Furthermore, an elastic element two is provided between the safety pin and the lifting seat to allow the safety pin to pop out and insert into the pin hole. Through this structure, after the lifting belt breaks, the elastic elements one and two work together to push the safety pin into the pin hole, thereby securing the lifting seat to the frame and providing a fall prevention function. The structure is simple, consisting entirely of mechanical designs, requiring no sensors, thus greatly increasing reliability and reducing cost.

Description

Technical Field

[0001] This invention relates to an elevator, and more particularly to an elevator belt breakage prevention structure. Background Technology

[0002] Vertical lifts with a lifting height exceeding 2 meters are required by national regulations to be designed with anti-fall structures to prevent the lift from falling from a height due to accidents, causing losses or even danger.

[0003] Many current fall protection structures rely on sensors for fall prevention, such as patent number CN201820739157, titled "An Invention of a Lift with Fall Prevention Function"; and patent number CN202011068084, titled "An Invention of a Fall Prevention Device for Lifts." However, sensors are precision electronic components with inherent reliability issues, especially during prolonged use or in harsh environments. Therefore, this application addresses these problems by designing a sensorless fall prevention structure that eliminates the need for sensors, thereby improving the structure's reliability. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a lifting belt breakage prevention structure.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A lifting belt breakage prevention structure for an elevator includes a frame, a lifting seat, and a lifting belt for lifting the lifting seat. Its features include: a connecting component fixedly connected to the lifting belt; a safety pin disposed on the lifting seat and movable along its own axis; and a pin hole disposed on the frame. The lifting seat and the connecting component are elastically connected by an elastic element, and a pull rod hinged to both the connecting component and the safety pin is provided between them. Furthermore, an elastic element is provided between the safety pin and the lifting seat to allow the safety pin to pop out and insert into the pin hole.

[0007] The connecting assembly includes a trigger plate, a connecting rod, and a clamping assembly for clamping the lifting belt. The first elastic element is a trigger spring. The lifting seat has a through hole. The connecting rod is located in the through hole and can move along the through hole. One end of the connecting rod is fixed to the clamping assembly and the other end is fixed to the trigger plate. The first trigger spring is located on the connecting rod. One end of the first trigger spring abuts against the lifting seat and the other end abuts against the trigger plate. The pull rod is hinged to the trigger plate.

[0008] The clamping assembly includes a first clamping plate and a second clamping plate. The lifting belt is located between the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate are locked together by screws. The connecting rod is fixed to the first clamping plate.

[0009] The lifting seat is equipped with a pin cylinder, the pin cylinder has a sliding hole, the safety pin is located in the sliding hole, and the safety pin has a limiting protrusion ring one. The sliding hole has a limiting protrusion ring two. The elastic element two is a trigger spring two and the trigger spring two is set on the safety pin. One end of the trigger spring two abuts against the limiting protrusion ring one and the other end of the trigger spring two abuts against the limiting protrusion ring two.

[0010] The frame is provided with a fall arrestor plate, and the pin hole is provided on the fall arrestor plate.

[0011] The pin hole is an elongated hole.

[0012] A sliding sleeve is provided inside the through hole, and the sliding sleeve is fixed to the lifting seat by screws. The connecting rod is located in the sliding sleeve.

[0013] The connecting rod is equipped with threads and an adjusting nut.

[0014] One end of the connecting rod is provided with a connecting block, and the clamping plate is provided with a T-shaped groove, and the connecting block can be inserted into the T-shaped groove.

[0015] The beneficial effects of the present invention are as follows: The present invention includes a frame, a lifting seat, and a lifting belt for lifting the lifting seat. It is characterized in that: it also includes a connecting component fixedly connected to the lifting belt, a safety pin disposed on the lifting seat and movable along its own axis, and a pin hole disposed on the frame. The lifting seat and the connecting component are elastically connected by an elastic element one, and a pull rod is provided between the connecting component and the safety pin, which is hinged to the above two. An elastic element two is provided between the safety pin and the lifting seat, which can cause the safety pin to pop out and insert into the pin hole.

[0016] With the above-described structure, after the lifting belt breaks, the safety pin can be pushed into the pin hole by the cooperation of elastic element one and elastic element two, thereby locking the lifting seat on the frame and playing a safety and anti-fall function. The above structure is simple and is a mechanical structure design that does not require sensors, thus greatly increasing reliability and reducing cost. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a structural view of the elevator;

[0019] Figure 2 This is a partially exploded structural view of the lifting platform;

[0020] Figure 3 This is a cross-sectional view of the pin cylinder. Detailed Implementation

[0021] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0022] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0023] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0024] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0025] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0026] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0027] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0028] Reference Figures 1 to 3This invention discloses a lifting belt breakage prevention structure for a lifting platform. The structure includes a frame 1, a lifting seat 2, and a lifting belt 3 for lifting the lifting seat 2. It also includes a connecting component fixedly connected to the lifting belt 3, a safety pin 4 mounted on the lifting seat 2 and movable along its own axis, and a pin hole 5 mounted on the frame 1. The connecting component, safety pin 4, and pin hole 5 are arranged in pairs to ensure force balance. The lifting seat 2 and the connecting component are elastically connected by an elastic element 6. A pull rod 7 is provided between the connecting component and the safety pin 4, hinged to both. An elastic element 8 is provided between the safety pin 4 and the lifting seat 2, allowing the safety pin 4 to pop out and insert into the pin hole 5. Through this structure, after the lifting belt 3 breaks, the elastic elements 6 and 8 work together to push the safety pin 4 into the pin hole 5, thereby securing the lifting seat 2 onto the frame 1 and providing a fall prevention function.

[0029] The specific structure described above is as follows: the connecting assembly includes a trigger plate 9, a connecting rod 10, and a clamping assembly for clamping the lifting belt 3; the elastic element 6 is a trigger spring; the lifting seat 2 has a through hole; the connecting rod 10 is located in the through hole and can move along the through hole; one end of the connecting rod 10 is fixed to the clamping assembly and the other end is fixed to the trigger plate 9; the trigger spring is located on the connecting rod 10; one end of the trigger spring abuts against the lifting seat 2 and the other end abuts against the trigger plate 9; the pull rod 7 is hinged to the trigger plate 9; in this application, the end of the connecting rod 10 has a threaded adjusting nut 11, which can adjust the position of the trigger plate 9 and the preload on the trigger spring; the trigger plate 9 is an L-shaped plate, which facilitates spatial connection. The specific structure of the clamping assembly is as follows: it includes a first clamping plate 12 and a second clamping plate 13, the lifting belt 3 is located between the first clamping plate 12 and the second clamping plate 13, the first clamping plate 12 and the second clamping plate 13 are locked together by screws, and the connecting rod 10 is fixed to the first clamping plate 12. The above structure is easy to assemble.

[0030] As shown in the figure, a pin cylinder 14 is installed on the lifting base 2. The pin cylinder 14 is fixed to the lifting base 2 by screws. The pin cylinder 14 has a sliding hole 15, and the safety pin 4 is located in the sliding hole 15. The safety pin 4 has a limiting protrusion 16, and the sliding hole 15 has a limiting protrusion 17. The elastic element 8 is a trigger spring 2, which is disposed on the safety pin 4. One end of the trigger spring 2 abuts against the limiting protrusion 16, and the other end of the trigger spring 2 abuts against the limiting protrusion 17. Therefore, through the above structure, the safety pin 4 and the trigger spring 2 can be restricted in the pin cylinder 14 and will not come out. As a further structure, the pin hole 5 is an elongated hole, so that the safety pin 4 can be more easily inserted into the pin hole 5.

[0031] In order to make the space compact and to avoid drilling holes in the frame 1 and reducing the strength of the frame 1, the frame 1 is equipped with a fall arrestor plate 18, and the pin hole 5 is provided on the fall arrestor plate 18.

[0032] To ensure that the connecting rod 10 can move smoothly, a sliding sleeve 19 is provided in the through hole. The sliding sleeve 19 is fixed to the lifting seat 2 by screws. The connecting rod 10 is located in the sliding sleeve 19, which is generally a copper sleeve.

[0033] One end of the connecting rod 10 is provided with a connecting block, and the clamping plate 12 is provided with a T-shaped groove. The connecting block can be inserted into the T-shaped groove. The above structure is convenient for processing and assembly.

[0034] The principle of this structure is as follows: If the lifting belt 3 of this application breaks, the trigger plate 9 loses its pulling force, thus losing pressure on the trigger spring 1. Under the action of elastic force, the trigger spring 1 will quickly push the trigger plate 9 downward, and the trigger plate 9 can drive the pull rod 7 to swing. While the pull rod 7 swings, it not only releases the movement space for the safety pin 4, but also pushes the safety pin 4 to move. At the same time, the trigger spring 2 will also push the safety pin 4 to move axially so that it can be inserted into the pin hole 5.

[0035] Because the pulling force of this application is perpendicular to the lifting direction, while the movement line of the safety pin 4 is perpendicular to the lifting direction, and we need to use the pulling force as the preload of the safety pin 4, we achieve the force conversion through the oblique connection of the pull rod 7. However, this will create an obstacle when the trigger spring 2 pushes the safety pin 4. Without the assistance of the trigger spring 1, the trigger spring 2 is prone to jamming when pushing the safety pin 4.

[0036] The above provides a detailed description of a lift belt breakage prevention structure provided by the embodiments of the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A lifting belt breakage prevention structure for an elevator, comprising a frame, a lifting seat, and a lifting belt for lifting the lifting seat, characterized in that: It also includes a connecting assembly fixedly connected to the lifting belt, a safety pin mounted on the lifting seat and movable along its own axis, and a pin hole mounted on the frame. The lifting seat and the connecting assembly are elastically connected by an elastic element one. A pull rod is provided between the connecting assembly and the safety pin, hinged to both of the above. An elastic element two is provided between the safety pin and the lifting seat, allowing the safety pin to pop out and insert into the pin hole. The pull rod is obliquely connected, so that when the lifting belt is working normally, the pull rod uses traction force to overcome the elastic force of the elastic element two and keep the safety pin in a retracted state. When the lifting belt breaks, the elastic element one pushes the connecting assembly downward, causing the pull rod to swing to release the constraint on the safety pin. At the same time, the elastic element... The second pusher inserts the safety pin into the pin hole. The connecting assembly includes a trigger plate, a connecting rod, and a clamping assembly for clamping the lifting belt. The first elastic element is a trigger spring. The lifting seat has a through hole. The connecting rod is located in the through hole and can move along the through hole. One end of the connecting rod is fixed to the clamping assembly and the other end is fixed to the trigger plate. The first trigger spring is located on the connecting rod. One end of the first trigger spring abuts against the lifting seat and the other end abuts against the trigger plate. The pull rod is hinged to the trigger plate. The connecting rod has threads and an adjusting nut. The end of the connecting rod has a threaded adjusting nut. The position of the trigger plate and the preload on the first trigger spring can be adjusted by adjusting the nut.

2. The elevator belt breakage prevention structure according to claim 1, characterized in that: The clamping assembly includes a first clamping plate and a second clamping plate. The lifting belt is located between the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate are locked together by screws. The connecting rod is fixed to the first clamping plate.

3. The elevator belt breakage prevention structure according to claim 1, characterized in that: The lifting seat is equipped with a pin cylinder, the pin cylinder has a sliding hole, the safety pin is located in the sliding hole, and the safety pin has a limiting protrusion ring one. The sliding hole has a limiting protrusion ring two. The elastic element two is a trigger spring two and the trigger spring two is set on the safety pin. One end of the trigger spring two abuts against the limiting protrusion ring one and the other end of the trigger spring two abuts against the limiting protrusion ring two.

4. The elevator belt breakage prevention structure according to claim 1, characterized in that: The frame is provided with a fall arrestor plate, and the pin hole is provided on the fall arrestor plate.

5. The elevator belt breakage prevention structure according to claim 1, characterized in that: The pin hole is an elongated hole.

6. The elevator belt breakage prevention structure according to claim 1, characterized in that: A sliding sleeve is provided inside the through hole, and the sliding sleeve is fixed to the lifting seat by screws. The connecting rod is located in the sliding sleeve.

7. The elevator belt breakage prevention structure according to claim 2, characterized in that: One end of the connecting rod is provided with a connecting block, and the clamping plate is provided with a T-shaped groove, and the connecting block can be inserted into the T-shaped groove.

Images