Buffer mechanism of lead screw elevator

Abstract

The utility model designs a buffer mechanism of a lead screw elevator. The buffer mechanism comprises an elevator, a fixed plate, a spring and a lead screw, the lifter is connected with the lead screw, the bottom of the lifter is connected to the fixing plate through a bolt, and the bottom of the lead screw is connected with the end cover; a spring is further arranged between the bottom of the fixing plate and the bolt, the spring is embedded in the middle of the bolt, and a limiting switch is further arranged on the top of the lead screw lifting machine. When any part such as a motor or a proximity switch or a control program lags, after the end cover is in place, the lifter does not stop immediately and continues to apply downward force to the lead screw for a short period of time, the end cover is limited and cannot move at the moment, and the lead screw lifter is jacked by the lead screw to move upwards to leave the fixed plate; the bolt is driven to move upwards through the nut on the base of the elevator, the spring is compressed, the redundant error stroke of the lead screw is buffered through the compression stroke of the spring, and the limiting switch is adopted to achieve double insurance to prevent the elevator from being damaged by jacking.

Description

Technical Field

[0001] This utility model belongs to the field of lifting machines, and specifically relates to a buffer mechanism for a screw jack. Background Technology

[0002] The opening mechanism of the high-pressure vessel uses an electric screw jack to lift and lower the end cover. When the jack lowers the end cover, if it does not stop in time after the cover is in place, the jack will continue to exert downward force on the screw. However, at this time, the end of the screw is already locked and cannot move. This force will cause the screw to bend or the jack to be damaged. Utility Model Content

[0003] To address the aforementioned issues, this application presents a screw jack buffer mechanism. By placing a spring between the jack and the fixed plate, the buffering capacity of the spring is used to achieve overpressure protection for the jack.

[0004] A lead screw jack buffer mechanism includes: a jack, a fixed plate, a spring, and a lead screw;

[0005] The elevator is connected to the lead screw;

[0006] The bottom of the elevator is bolted to the fixed plate;

[0007] A spring is also provided between the bottom of the fixing plate and the bolt, and the spring is nested in the middle of the bolt;

[0008] The bottom of the lead screw is connected to the end cap.

[0009] Preferably, a limit switch is also provided on the top of the elevator.

[0010] Preferably, the elevator has four bolt holes at the four corners of its bottom, and bolts are inserted into the bolt holes for connection with the fixing plate.

[0011] The advantages and effects of this application are as follows:

[0012] This application designs a buffer mechanism for a screw jack, comprising: a jack, a fixed plate, a spring, and a screw. The jack and the screw are connected, with the bottom of the jack bolted to the fixed plate, and the bottom of the screw connected to an end cap. A spring is also provided between the bottom of the fixed plate and the bolt, nested within the bolt. A limit switch is also provided at the top of the screw jack. If any component, such as the motor, proximity switch, or control program, lags behind, the jack may not stop immediately after the end cap is in place, continuing to apply downward force to the screw for a short period. At this time, the end cap is restricted from moving, and the screw jack is lifted upward by the screw, moving away from the fixed plate. The nut on the jack's base drives the bolt upward, compressing the spring. The spring's compression stroke buffers any excess error stroke of the screw. A limit switch is used for double protection to prevent damage to the jack.

[0013] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0014] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 A structural diagram of a lead screw jack buffer mechanism designed for this application;

[0017] Figure 2 A diagram showing the state of the elevator designed for this application just as it presses against the fixed plate;

[0018] Figure 3 A diagram showing the state of the elevator designed for this application when it is raised by the spring;

[0019] Figure label:

[0020] 1. Lifting platform; 2. Fixing plate; 3. Spring; 4. Lead screw; 5. End cap; 6. Bolt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0022] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0023] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0024] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0025] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0026] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0027] Example 1

[0028] Please refer to Figure 1 This embodiment mainly introduces the basic structure of a lead screw jack buffer mechanism, including: jack 1, fixed plate 2, spring 3, and lead screw 4;

[0029] The elevator 1 is connected to the lead screw 4; the elevator 1 controls the lead screw 4 to move up and down;

[0030] The bottom of the elevator 1 is connected to the fixed plate 2 by bolts 6; the end of the bolt is below the fixed plate, and the fixed plate is provided with a nut for connecting with the bolt 6.

[0031] A spring 3 is also provided between the bottom of the fixing plate 2 and the bolt 6, and the spring 3 is nested in the middle of the bolt 6; the spring is in a pre-compressed state, that is, it has been compressed a certain distance, but there is still a compression margin.

[0032] The bottom of the lead screw 4 is connected to the end cap 5, and is used to control the up and down movement of the end cap.

[0033] Furthermore, a limit switch is also provided on the top of the lifting platform 1. If the limit sensor of the lead screw malfunctions and the lead screw may not stop moving downwards, the lifting platform will be lifted upwards by the lead screw. After the spring is compressed to another greater stroke, the limit switch pressing on the lifting platform will be triggered, the power will be turned off, and the lead screw will be ensured to stop moving.

[0034] Furthermore, four bolt holes are provided at the four corners of the bottom of the elevator 1, and bolts 6 are inserted into the bolt holes for connection with the fixing plate 2.

[0035] Please refer to Figure 2 and Figure 3 This application designs a buffer mechanism for a screw jack, comprising: a jack, a fixed plate, a spring, and a screw. The jack and the screw are connected, with the bottom of the jack bolted to the fixed plate, and the bottom of the screw connected to an end cap. A spring is also provided between the bottom of the fixed plate and the bolt, nested within the bolt. A limit switch is also provided at the top of the screw jack. If any component, such as the motor, proximity switch, or control program, lags behind, the jack may not stop immediately after the end cap is in place, continuing to apply downward force to the screw for a short period. At this time, the end cap is restricted from moving, and the screw jack is lifted upward by the screw, moving away from the fixed plate. The nut on the jack's base drives the bolt upward, compressing the spring. The spring's compression stroke buffers any excess error stroke of the screw. A limit switch is used for double protection to prevent damage to the jack.

[0036] The above description is merely a preferred embodiment of this utility model and does not limit the scope of protection of this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any changes, modifications, substitutions, integrations, and parameter alterations made to these embodiments within the spirit and principles of this utility model, through conventional substitutions or methods that achieve the same function without departing from the principles and spirit of this utility model, fall within the scope of protection of this utility model.

Claims

1. A screw-lift buffer mechanism, characterized by, include: Elevator (1), fixed plate (2), spring (3), lead screw (4); The elevator (1) and the lead screw (4) are connected; The bottom of the elevator (1) is connected to the fixed plate (2) by bolts (6); A spring (3) is also provided between the bottom of the fixing plate (2) and the bolt (6), and the spring (3) is nested in the middle of the bolt (6); The bottom of the lead screw (4) is connected to the end cap (5).

2. A screw drive lift cushioning mechanism according to claim 1 wherein, The top of the elevator (1) is also equipped with a limit switch.

3. A screw drive lift cushioning mechanism as defined in claim 1 wherein, The elevator (1) has four bolt holes at its four corners at the bottom. Bolts (6) are inserted into the bolt holes to connect with the fixing plate (2).

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