A power distribution control device spring cylinder pre-tensioning device

Abstract

The utility model relates to power distribution control equipment spring cylinder preloading structure technical field especially is a kind of power distribution control equipment spring cylinder preloading device, including outer sleeve and inner cylinder seat, the bottom of outer sleeve inside and the bottom of inner cylinder seat are all installed with butterfly spring, the opposite end of two groups of butterfly spring is all fixed with connecting plate, the bottom of the connecting plate of top is installed with the downward resistance strain gauge force sensor of detection head, guiding telescopic link is provided between two connecting plates, in the utility model, resistance strain gauge force sensor has the function of spring pre-tightening force detection, when pre-tightening force is not in set value by resistance strain gauge force sensor sensing, by the remote start of control platform positive and negative motor, to drive the meshing of gear and rack, to change the position and pressure between outer sleeve and inner cylinder seat, pre-tightening of spring cylinder is adjusted automatically, change the position of spring support seat, realize the accurate adjustment of spring compression amount.

Description

Technical Field

[0001] This utility model relates to the technical field of spring cylinder pretensioning structure for power distribution control equipment, specifically a spring cylinder pretensioning device for power distribution control equipment. Background Technology

[0002] The spring cylinder preload structure in power distribution control equipment is mainly used to ensure that elastic elements (such as springs) maintain a specific amount of compression in the initial state, thereby providing a stable preload force. This structural design directly affects the equipment's sealing performance, operating accuracy, and lifespan.

[0003] Existing electrical control equipment often uses screw pre-tightening for spring cylinders, which has poor anti-loosening performance and a simple pre-tightening structure, making it unsuitable for high-voltage or variable-load conditions.

[0004] Therefore, it is particularly important to design a spring cylinder preload device for power distribution control equipment to overcome the above-mentioned technical defects and improve overall practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a spring cylinder preload device for power distribution control equipment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A spring cylinder pre-tensioning device for power distribution control equipment includes an outer sleeve and an inner sleeve base. A butterfly spring is installed at the bottom of the inner side of the outer sleeve and the bottom of the inner sleeve base. A connecting plate is fixed to one end of each pair of butterfly springs facing each other. A strain gauge force sensor with a downward-facing detection head is installed at one end of the bottom of the top connecting plate. A guide telescopic rod is provided between the two sets of connecting plates. A cylindrical helical spring is connected between the two sets of connecting plates and outside the guide telescopic rod. Gear seats are fixed at the top edge of the outer sleeve and on both the left and right sides. A forward and reverse motor is installed on the outside of the gear seat. The output end of the forward and reverse motor passes through the gear seat and is connected to a gear. Racks extending along the height direction are installed on both the left and right side walls of the inner sleeve.

[0008] As a preferred embodiment of this utility model, the connection between the outer sleeve and the inner sleeve is a sliding connection, and the internal structural size of the outer sleeve is adapted to the external structural size of the inner sleeve.

[0009] As a preferred embodiment of this utility model, a remote controller is provided on the outer side of the outer sleeve. The remote controller is connected to the resistance strain gauge force sensor and the forward and reverse motors via wires, and the connection is electrical. The remote controller is also wirelessly connected to the main control console via a local area network.

[0010] As a preferred embodiment of this utility model, both ends of the cylindrical helical spring are bolted to the outside of the connecting plate.

[0011] As a preferred embodiment of this utility model, the connection between the gear and the rack is an meshing connection.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, a spring cylinder pre-tensioning device for a power distribution control equipment is provided. A resistance strain gauge force sensor detects the spring pre-tensioning force. When the strain gauge force sensor detects that the pre-tensioning force is not at the set value, it sends a signal to a remote controller, which then wirelessly transmits it to the main control console. The control console remotely starts a forward and reverse motor to engage a gear and rack, thereby changing the position and pressure between the outer sleeve and the inner sleeve seat, automatically adjusting the spring cylinder pre-tensioning, and changing the position of the spring support seat to achieve precise adjustment of the spring compression. A multi-stage spring structure composed of butterfly springs and cylindrical helical springs is provided to optimize the pre-tensioning force curve, improve stiffness stability, and adapt to high-pressure or variable-load conditions. Furthermore, a guide telescopic rod is added to prevent spring deflection and ensure the stability of the pre-tensioning force direction. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model;

[0015] Figure 2 This is a structural diagram of the outer sleeve and inner sleeve of this utility model;

[0016] Figure 3 This is an enlarged schematic diagram of structure A of this utility model.

[0017] In the diagram: 1. Outer sleeve; 2. Inner sleeve seat; 3. Butterfly spring; 4. Connecting plate; 5. Resistance strain gauge force sensor; 6. Guide telescopic rod; 7. Cylindrical helical spring; 8. Gear seat; 801. Forward and reverse motor; 802. Gear; 803. Rack. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0023] A spring cylinder pre-tightening device for power distribution control equipment includes an outer sleeve 1 and an inner sleeve seat 2. A butterfly spring 3 is installed on the bottom of the inner side of the outer sleeve 1 and the bottom of the inner sleeve seat 2. A connecting plate 4 is fixed to one end of each pair of butterfly springs 3 facing each other. A resistance strain gauge force sensor 5 with the detection head pointing downward is installed at one end of the bottom of the connecting plate 4 at the top. A guide telescopic rod 6 is provided between the two sets of connecting plates 4. A cylindrical helical spring 7 is connected between the two sets of connecting plates 4 and outside the guide telescopic rod 6. Gear seats 8 are fixed at the top edge of the outer sleeve 1 and on both the left and right sides.

[0024] The outer sleeve 1 and the inner sleeve 2 are connected by a sliding connection. The internal structure size of the outer sleeve 1 is adapted to the external structure size of the inner sleeve 2. Both ends of the cylindrical helical spring 7 are installed on the outside of the connecting plate 4 by bolts.

[0025] In this embodiment, please refer to Figure 1 and Figure 2 and Figure 3 A forward and reverse motor 801 is installed on the outside of the gear seat 8. The output end of the forward and reverse motor 801 passes through the gear seat 8 and is connected to a gear 802. Racks 803 extending along the height direction are installed on both the left and right side walls of the inner cylinder seat 2.

[0026] The outer sleeve 1 is equipped with a remote controller, which is connected to the resistance strain gauge force sensor 5 and the forward and reverse motor 801 by wires. The connection is electrical, and the remote controller is wirelessly connected to the main control console via a local area network. The gear 802 and the rack 803 are connected by meshing.

[0027] The working process of this utility model is as follows: The resistance strain gauge force sensor 5 has the function of detecting the preload of the spring. When the resistance strain gauge force sensor 5 detects that the preload is not at the set value, it can send a signal to the remote controller, which then wirelessly sends it to the main control console. The control console remotely starts the forward and reverse motor 801, which drives the meshing of the gear 802 and the rack 803, thereby changing the position and pressure between the outer sleeve 1 and the inner sleeve seat 2, automatically adjusting the preload of the spring cylinder, changing the position of the spring support seat, and realizing precise adjustment of the spring compression. A multi-stage spring structure composed of a butterfly spring 3 and a cylindrical helical spring 7 is provided to optimize the preload curve, improve stiffness stability, and adapt to high pressure or variable load conditions. Furthermore, a guide telescopic rod 6 is added to prevent the spring from deflecting and ensure the stability of the preload direction.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spring cylinder pre-tensioning device for power distribution control equipment, comprising an outer sleeve (1) and an inner sleeve seat (2), characterized in that: A butterfly spring (3) is installed on the bottom of the inner side of the outer sleeve (1) and the bottom of the inner cylinder seat (2). A connecting plate (4) is fixed to one end of each of the two butterfly springs (3). A resistance strain gauge force sensor (5) with the detection head pointing downward is installed at one end of the bottom of the connecting plate (4) at the top. A guide telescopic rod (6) is provided between the two sets of connecting plates (4). A cylindrical helical spring (7) is connected between the two sets of connecting plates (4) and outside the guide telescopic rod (6). A gear seat (8) is fixed at the top edge of the outer sleeve (1) and on both the left and right sides. A forward and reverse motor (801) is installed on the outside of the gear seat (8). The output end of the forward and reverse motor (801) passes through the gear seat (8) and is connected to a gear (802). A rack (803) extending along the height direction is installed on both the left and right side walls of the inner cylinder seat (2).

2. The spring cylinder preload device for power distribution control equipment according to claim 1, characterized in that: The outer sleeve (1) and the inner sleeve (2) are connected by a sliding connection, and the internal structure size of the outer sleeve (1) is adapted to the external structure size of the inner sleeve (2).

3. The spring cylinder preload device for power distribution control equipment according to claim 1, characterized in that: A remote controller is provided on the outside of the outer sleeve (1). The remote controller is connected to the resistance strain gauge force sensor (5) and the forward and reverse motor (801) by wires. The connection is electrical. The remote controller is wirelessly connected to the main control console via a local area network.

4. The spring cylinder preload device for power distribution control equipment according to claim 1, characterized in that: Both ends of the cylindrical helical spring (7) are bolted to the outside of the connecting plate (4).

5. The spring cylinder preload device for power distribution control equipment according to claim 1, characterized in that: The connection between the gear (802) and the rack (803) is a meshing connection.

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