Quick mounting and dismounting device for mutual inductor of electric medium-voltage cabinet

Abstract

The invention provides a rapid mounting and dismounting device for an electric medium-voltage cabinet mutual inductor. The rapid mounting and dismounting device comprises a main frame, a worm and gear, a first motor, a second motor, a control box, a main arm, an auxiliary arm, a mutual inductor supporting tool, an electric cylinder and a hinge. Lifting of the main arm is achieved through the controller and the frequency converter, the motor and the linear guide rail on the main arm control the auxiliary arm to stretch out and draw back, the special supporting tool for the mutual inductor at the front end of the auxiliary arm can turn over by 90 degrees, and the motor on the supporting tool can enable the mutual inductor supporting plate to rotate by 360 degrees. The device has a manual control mode, a touch screen control mode and a hand wheel control mode, displacement and rotation of the mutual inductor along multiple axes can be achieved, and fine adjustment can be stopped at any position. According to the device, the mutual inductor can move and rotate along multiple axes, obstacles in the switch cabinet can be avoided, all the devices are electrically operated, the operation intensity can be reduced, the operation safety is guaranteed, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of current transformer replacement tools, and in particular to a device for quickly installing and disassembling a transformer of an electric medium voltage cabinet. Background Art

[0002] The current in power generation, transformation, transmission, distribution and power consumption lines varies greatly, ranging from a few amperes to tens of thousands of amperes. In order to facilitate measurement, protection and control, it needs to be converted into a more uniform current. In addition, the voltage on the line is generally high. If it is measured directly, it is very dangerous. In order to measure the current safely, current transformers came into being. Current transformers mainly play the role of current conversion and electrical isolation.

[0003] However, with the rapid development of the economy, people's demand for electricity is increasing, and the requirements for the reliability of power supply from the power grid are also getting higher and higher. Under the condition of growing electricity demand, the current transformers used in traditional switch cabinets can no longer meet the needs of residents' electricity. In order to ensure the safe and reliable operation of the power system, the capacity of the current transformers in the new switch cabinets is getting larger and larger. The original switch cabinet needs to be replaced with a current transformer with a larger capacity.

[0004] In the actual installation and removal process of the current transformer, the existing installation and removal methods still have the following defects:

[0005] 1. In terms of space height, the current transformer in a 10kV cabinet is generally installed in the middle of the switch cabinet, with a height of 0.5-1.2 meters; in terms of installation position, it is usually fixed vertically on the rear panel of the switch cabinet, and a small number of them are fixed obliquely on the top of the lower panel of the switch cabinet. The weight of a single current transformer in a 10kV cabinet is generally 30-70kg. It is very laborious to remove, install and replace a current transformer weighing dozens of kilograms at this height.

[0006] 2. The space inside the switch cabinet is small, which is not convenient for exerting force and multiple people to work. Usually, only one person can lie down at the bottom of the switch cabinet or half-kneel at the lower cabinet to carry, lift and install or remove the current transformer with both hands. Sometimes, this operator even needs to use his or her belly as a temporary support point for the transformer. Other personnel can only provide auxiliary support for the body of the operator or provide auxiliary anti-slip support for the transformer. The installation process is very strenuous.

[0007] 3. Due to the interactive relationship between space and the weight of the transformer, the installation process falls into the contradiction of "thin people can't exert their strength, and strong people can't get in".

[0008] 4. Due to the small space inside the cabinet and the obstruction of the cabinet board, it is impossible to use auxiliary tools such as crowbars, jacks, ropes, wooden blocks, and wooden boards to save effort and time. At present, there is no auxiliary tool that can effectively help operators to install current transformers in switch cabinets.

[0009] 5. In view of the above reasons, there is always a risk of the transformer falling off and injuring people or causing damage to equipment during the operation. Summary of the invention

[0010] According to the above technical problems in the installation and removal of the existing current transformer, a device for rapid installation and removal of the transformer of the electric medium voltage cabinet is provided. The present invention improves the structural design of the valve core and the sleeve, realizes low friction and fast opening flow characteristics, improves the performance and reliability of the regulating valve, and meets the use requirements under special working conditions.

[0011] The technical means adopted by the present invention are as follows:

[0012] A device for quickly installing and removing a transformer of an electric medium voltage cabinet, comprising a main frame, a worm gear, a first motor, a second motor, a control box, a main arm, a secondary arm, a transformer bracket, an electric cylinder, and a hinge;

[0013] The main arm is mounted on the main frame and driven to move up and down along the Y axis by the first motor and the worm gear;

[0014] The auxiliary arm is connected to the main arm through a linear guide rail and can be extended forward and backward along the X-axis direction;

[0015] The mutual inductor bracket is installed at the front end of the auxiliary arm, and can be turned 90 degrees along the Z-axis direction through an electric cylinder and a hinge;

[0016] The mutual inductor bracket is provided with a second motor, which can drive the bracket to realize 360-degree rotation centered on the X-axis.

[0017] Furthermore, the main frame is made of aluminum alloy and a Fumar wheel is arranged at the bottom to facilitate flexible movement in a small space;

[0018] The device is powered by a battery and is equipped with a charging interface. When fully charged, it can continuously complete at least 60 installation and removal operations of the transformer.

[0019] Furthermore, the control box is connected to a button box and a handwheel control device, and multi-speed adjustment is achieved through buttons, and fine-tuning control of the transformer bracket is achieved through the handwheel, ensuring accurate adjustment of the position and posture of the transformer.

[0020] Furthermore, the transformer bracket comprises a support plate and a clamping device, wherein the clamping device is composed of an adjustable clamping arm and an anti-slip pad, and can adapt to transformers of different models and sizes and ensure that they are firmly fixed.

[0021] Furthermore, the auxiliary arm and the transformer bracket are connected via an electric cylinder, and the extension and retraction of the electric cylinder can provide an additional adjustment angle range to avoid obstacles in the medium voltage switch cabinet.

[0022] A method for quickly installing and disassembling a transformer of an electric medium voltage cabinet comprises the following steps:

[0023] Step 1: Adjust the device position and fix the frame;

[0024] Step 2: Operate the control box to drive the main arm to rise and fall to the transformer docking position;

[0025] Step 3: Start the extension and retraction of the auxiliary arm and push the transformer into the designated position;

[0026] Step 4: Operate the electric cylinder and bracket to adjust the angle and position of the transformer;

[0027] Step 5: Use the hand wheel to fine-tune the transformer posture to complete installation or disassembly.

[0028] Due to the adoption of the above technical solution, compared with the prior art, the present invention has the following advantages:

[0029] 1. The present invention provides a device for rapid installation and disassembly of a current transformer in an electric medium voltage cabinet. The device is electrically operated during the installation and disassembly of the current transformer. There is no need to manually move the transformer during the entire process, which greatly reduces the construction intensity of the operators.

[0030] 2. The present invention provides a device for quickly installing and disassembling a transformer in an electric medium voltage cabinet, which avoids the risk of the transformer slipping out of hands and injuring people or damaging equipment due to manual movement, thereby ensuring the safety of equipment and personnel.

[0031] 3. The present invention provides a device for rapid installation and disassembly of a transformer in an electric medium voltage cabinet. The use of the device changes the transformer installation station from the original two-person operation to a one-person operation, improving the efficiency by 60%, thereby enhancing the construction work efficiency.

[0032] Based on the above reasons, the present invention can be promoted in the technical field of current transformer replacement tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 This is a structural cross-sectional view of a device for quickly installing and removing a transformer for an electric medium voltage cabinet according to the present invention;

[0035] Figure 2 The present invention is a schematic structural diagram of a device for quickly installing and disassembling a transformer for an electric medium voltage cabinet.

[0036] In the figure: 1. main frame; 2. first motor; 3. worm gear; 4. battery; 5. control box; 6. button box; 7. mutual inductor; 8. mutual inductor bracket; 9. electric cylinder; 10. second motor; 11. main arm; 12. auxiliary arm. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0042] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] like Figures 1 to 2As shown, the present invention provides a device for quickly installing and disassembling a transformer for an electric medium voltage cabinet, comprising: a main frame 1, a worm gear 3, a first motor 2, a second motor 10, a control box 5, a main arm 11, a secondary arm 12, a transformer bracket 8, an electric cylinder 9, and a hinge;

[0045] The main arm 11 is mounted on the main frame 1 and is driven to move up and down along the Y axis by the first motor 2 and the worm gear 3;

[0046] The auxiliary arm 12 is connected to the main arm 11 via a linear guide rail and can be extended forward and backward along the X-axis direction;

[0047] The mutual inductor bracket 8 is installed at the front end of the auxiliary arm 12, and is turned 90 degrees along the Z-axis direction through the electric cylinder 9 and the hinge;

[0048] The transformer bracket 8 is provided with a second motor 10 which can drive the bracket to realize a 360-degree rotation around the X-axis.

[0049] Furthermore, the main frame 1 adopts an aluminum alloy structure, which is light in weight and high in strength, and is easy to carry and operate. A Fumar wheel is provided at the bottom, so that the device can be flexibly moved in a small space, which improves the mobility and applicability of the device and facilitates the installation and removal of the transformer 7 in different work sites; it is powered by a battery 4 and equipped with a charging interface, which gets rid of the dependence on a fixed power source and can work normally in places without a power socket. When fully charged, the installation and removal operations of the transformer 7 can be completed continuously for at least 60 times, which improves work efficiency and reduces the time waste caused by frequent charging.

[0050] Furthermore, the control box 5 is connected to a button box 6 and a handwheel control device, and multi-speed adjustment is achieved through buttons, and fine-tuning control of the transformer bracket 8 is achieved through the handwheel, ensuring accurate adjustment of the position and posture of the transformer 7.

[0051] Furthermore, the control box 5 is connected to the button box 6, and multi-speed adjustment can be achieved through buttons. The appropriate speed can be selected according to different operating requirements, thereby improving the accuracy and safety of the operation; the handwheel control device can realize fine-tuning control of the transformer bracket 8, and when the position and posture of the transformer 7 need to be precisely adjusted, it can ensure that the transformer 7 can be accurately installed in place, thereby improving the installation quality and efficiency.

[0052] Furthermore, the transformer bracket 8 includes a support plate and a clamping device, and the clamping device is composed of an adjustable clamping arm and an anti-slip pad, which can adapt to transformers 7 of different models and sizes and ensure that they are firmly fixed.

[0053] Furthermore, the auxiliary arm 12 and the transformer bracket 8 are connected by an electric cylinder 9. The extension and retraction of the electric cylinder 9 can provide an additional adjustment angle range to avoid obstacles such as cables and mounting beams in the medium-voltage switch cabinet, ensuring that the transformer 7 can be smoothly installed and disassembled, thereby improving the adaptability and reliability of the device in complex environments.

[0054] The present invention also provides a method for quickly installing and disassembling a transformer of an electric medium voltage cabinet, comprising the following steps:

[0055] Step 1: Adjust the device position and fix the main frame 1;

[0056] After moving the device to a suitable position, ensure that the main frame 1 is stable to prevent movement during operation.

[0057] Step 2: operate the control box 5 to drive the main arm 11 to rise and fall to the docking position of the mutual inductor 7;

[0058] The control box 5 controls the operation of the first motor 2, and drives the main arm 11 to move up and down along the Y axis through the worm gear 3, and adjusts it to a height position substantially the same as that of the mutual inductor 7 for subsequent operations.

[0059] Step 3: Start the extension and retraction action of the auxiliary arm 12 to push the mutual inductor 7 into the specified position;

[0060] The auxiliary arm 12 is connected to the main arm 11 through a linear guide rail, and is extended and retracted forward and backward along the X-axis direction according to actual conditions to push the transformer 7 installed on the transformer bracket 8 to the designated installation position in the medium voltage cabinet.

[0061] Step 4: Operate the electric cylinder 9 and the bracket to adjust the angle and position of the transformer 7;

[0062] The transformer bracket 8 is installed at the front end of the auxiliary arm 12, and is flipped 90 degrees along the Z-axis direction through the electric cylinder 9 and the hinge, and the second motor 10 on the transformer bracket 8 drives the bracket to rotate 360 ​​degrees around the X-axis, so as to adjust the angle and position of the transformer 7 so that it is better aligned with the installation or removal position. At the same time, the extension and retraction of the electric cylinder 9 can also provide an additional adjustment angle range to avoid obstacles in the medium-voltage switch cabinet.

[0063] Step 5: Use the hand wheel to fine-tune the position of the transformer 7 to complete the installation or disassembly;

[0064] The hand wheel control device connected to the control box 5 can fine-tune the transformer bracket 8. The position and posture of the transformer 7 are adjusted by the hand wheel to ensure that the transformer 7 is accurately installed in place. The clamping device of the transformer bracket 8 is composed of an adjustable clamping arm and an anti-slip pad, which can adapt to transformers 7 of different models and sizes and ensure that they are firmly fixed.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for quickly installing and removing a transformer for an electric medium voltage cabinet, characterized in that: include: Main frame, worm gear, first motor, second motor, control box, main arm, auxiliary arm, transformer bracket, electric cylinder, hinge; The main arm is mounted on the main frame and driven to move up and down along the Y axis by the first motor and the worm gear; The auxiliary arm is connected to the main arm through a linear guide rail and can be extended forward and backward along the X-axis direction; The mutual inductor bracket is installed at the front end of the auxiliary arm, and can be turned 90 degrees along the Z-axis direction through an electric cylinder and a hinge; The mutual inductor bracket is provided with a second motor, which can drive the bracket to realize 360-degree rotation centered on the X-axis.

2. A device for rapid installation and removal of transformers for electric medium voltage cabinets according to claim 1, characterized in that: The main frame is made of aluminum alloy and has a Fumar wheel at the bottom, which is convenient for flexible movement in a small space. The device is powered by a battery and is equipped with a charging interface. When fully charged, it can continuously complete at least 60 installation and removal operations of the transformer.

3. The device for rapid installation and removal of a transformer for an electric medium voltage cabinet according to claim 1, characterized in that: The control box is connected to a button box and a handwheel control device, and multi-speed adjustment is achieved through buttons, and fine-tuning control of the transformer bracket is achieved through the handwheel, ensuring accurate adjustment of the position and posture of the transformer.

4. The device for rapid installation and removal of a transformer for an electric medium voltage cabinet according to claim 1, characterized in that: The mutual inductor bracket comprises a bracket and a clamping device, wherein the clamping device consists of an adjustable clamping arm and an anti-slip pad, and can adapt to mutual inductors of different models and sizes and ensure that they are firmly fixed.

5. The device for rapid installation and removal of a transformer for an electric medium voltage cabinet according to claim 1, characterized in that: The auxiliary arm and the transformer bracket are connected via an electric cylinder, and the extension and retraction of the electric cylinder can provide an additional adjustment angle range to avoid obstacles in the medium voltage switch cabinet.

6. A method for quickly installing and disassembling a transformer of an electric medium voltage cabinet, characterized in that: The following steps are involved: Step 1: Adjust the device position and fix the frame; Step 2: Operate the control box to drive the main arm to rise and fall to the transformer docking position; Step 3: Start the extension and retraction of the auxiliary arm and push the transformer into the designated position; Step 4: Operate the electric cylinder and bracket to adjust the angle and position of the transformer; Step 5: Use the hand wheel to fine-tune the transformer posture to complete installation or disassembly.

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