Frequency converter energy consumption braking unit with protection structure

Abstract

The utility model relates to the technical field of frequency converters, in particular to a frequency converter energy consumption braking unit with a protection structure, which comprises a frequency converter main body, one side of the frequency converter main body is rotatably connected with a protection door, a plurality of supporting plates are fixedly connected in the frequency converter main body, and one end of each supporting plate is slidably connected with a fixing mechanism. The fixing mechanism comprises a telescopic column, the telescopic column is connected to one end of the supporting plate in a sliding mode and penetrates into the supporting plate, and the top end of the supporting plate is fixedly connected with the protection mechanism and connected to the top end of the fixing mechanism in a sleeving mode. According to the utility model, through mutual cooperation of internal parts of the fixing mechanism and the protection mechanism, when the protection door is closed, the energy consumption braking unit and the frequency converter main body can be installed and fixed, and when the protection door is opened, the energy consumption braking unit and the frequency converter main body can be conveniently unfixed. Therefore, the energy consumption braking unit can be conveniently detached and taken out from the frequency converter body.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a frequency converter energy-consuming braking unit with a protective structure. Background Art

[0002] In the process of mechanical production, when using power equipment, it is necessary to use a frequency converter to control the frequency of its production equipment. The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. It provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions, such as over-current, over-voltage, overload protection, etc., energy consumption braking unit,

[0003] The inverter energy-consuming braking unit, also known as the "inverter-specific energy-consuming braking unit", is a type of inverter-specific braking unit. It is mainly used in variable frequency speed regulation systems with large inertia loads and requirements for rapid braking. It transmits the regenerative electric energy generated by rapid braking of the motor or converted from potential energy to a matching braking resistor, thereby achieving rapid braking and protecting the inverter from damage by the regenerative electric energy.

[0004] When the energy-consuming braking unit of the frequency converter is used for a long time, dust from the environment in which the frequency converter is placed will fly in, causing short circuit and other phenomena in the energy-consuming braking unit. A protective mechanism is installed and fixed on the surface of the energy-consuming braking unit of the existing frequency converter to protect the energy-consuming braking unit. The existing protective structure is connected and fixed to the surface of the energy-consuming braking unit by bolts, and the energy-consuming braking unit is connected and fixed to the inside of the frequency converter by bolts. As a result, when the energy-consuming braking unit is installed and disassembled inside the frequency converter, it is inconvenient to rotate the bolts for installation or disassembly due to insufficient space, which makes it cumbersome, time-consuming and labor-intensive to repair or disassemble and replace the energy-consuming braking unit.

[0005] Therefore, it is necessary for us to propose an inverter energy-consuming braking unit with a protective structure to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an inverter energy-dissipating braking unit with a protective structure. Through the mutual cooperation between the fixing mechanism and the internal parts of the protective mechanism, the energy-dissipating braking unit and the inverter main body can be installed and fixed when the protective door is closed, and when the protective door is opened, the energy-dissipating braking unit and the inverter main body can be released from fixation, thereby facilitating the energy-dissipating braking unit to be disassembled and removed from the inside of the inverter main body, so as to solve the problem in the prior art that when the energy-dissipating braking unit is installed and disassembled inside the inverter, it is inconvenient to rotate the bolts for installation or disassembly due to insufficient space, thereby making the maintenance or disassembly and replacement of the energy-dissipating braking unit cumbersome, time-consuming and labor-intensive.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inverter energy-consuming braking unit with a protective structure, comprising an inverter body, one side of the inverter body being rotatably connected to a protective door, a plurality of support plates being connected and fixed inside the inverter body, one end of the support plate being slidably connected to a fixing mechanism and passing through the interior of the support plate, the top end of the support plate being connected and fixed to a protective mechanism and being sleeved on the top end of the fixing mechanism.

[0008] Preferably, the fixing mechanism includes a telescopic column, the telescopic column is slidably connected to one end of the support plate and passes through the interior of the support plate, a telescopic spring is connected and fixed inside the support plate and is located at one end of the telescopic column, a sliding bar is connected and fixed to the top of the support plate, a fixing ring is connected and fixed to the top of the telescopic column and is located inside the support plate, one side of the fixing ring is rotatably connected to a connecting shaft, the interior of the sliding bar is rotatably connected to a rotating shaft and is located above the telescopic column, one end of the outer wall of the rotating shaft is connected and fixed to a fixing block, one end of the rotating shaft is connected and fixed to a connecting rod, a connecting block is connected and fixed between the connecting rod and the connecting shaft, and is slidably connected to the inside of the support plate and the sliding bar.

[0009] Preferably, the protective mechanism includes a connecting plate, which is slidably connected to the top of the supporting plate and sleeved with the outer wall of the sliding bar; a protective cover plate is installed on the top of the connecting plate; mounting plates are connected and fixed to both sides of the bottom end of the protective cover plate and penetrate into the interior of the connecting plate; an energy consumption module is installed and fixed to the top of the connecting plate and is located on the inner wall of the protective cover plate; a sliding block is slidably connected to the interior of the connecting plate and penetrates into the interior of the mounting plate; the top of the sliding block is connected and fixed to a limiting plate and is located inside the connecting plate; one side of the limiting plate is connected and fixed to a limiting spring.

[0010] Preferably, a contraction groove matching the telescopic column is provided inside the support plate, the rotating shaft is rotatably connected to the slide bar via a bearing, and a sliding groove matching the connection block is provided inside the slide bar and the support plate.

[0011] Preferably, a connecting groove matching the slide bar is formed at the bottom end of the connecting plate, an arc surface is formed on the contact surface between the sliding block and the slide bar, and a limiting groove matching the limiting plate is formed inside the connecting plate.

[0012] Preferably, mounting grooves matching the mounting plate are provided on both sides of the top of the connecting plate, a fixing groove matching the sliding block is provided on the inner side of the mounting plate, and an arc plate engaging with the mounting groove is provided on the outer side of the mounting plate.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. Open the protective door, the protective door opens to release the squeeze on the telescopic column, so that the telescopic column releases the squeeze on the telescopic spring, the telescopic spring resets and pushes the telescopic column to slide out from the inside of the support plate, the movement of the telescopic column drives the top fixed ring to move, the movement of the fixed ring drives the connecting shaft to move, the movement of the connecting shaft moves through the connecting block, the movement of the connecting block drives the connecting rod to move, so that the connecting rod drives the rotating shaft to rotate, the rotation of the rotating shaft drives the fixed block to move, so that the fixed block moves from the bottom of the connecting plate to the inside of the slide bar, and the connection between the connecting plate and the slide bar can be released, so that the connecting plate can slide out from the top of the support plate through the slide bar, driving the energy consumption module and the inverter body to separate from each other;

[0015] 2. The connecting plate slides out from the top of the supporting plate, and the connecting plate and the slide bar are separated from each other, so that the two sides of the slide bar release the squeeze on the sliding block, and the sliding block drives the limit plate to release the squeeze on the limit spring. The limit spring resets and pushes the limit plate to move. The movement of the limit plate drives the sliding block to move, so that the sliding block moves from the inside of the mounting plate to the inside of the connecting plate, and the installation between the mounting plate and the connecting plate is released. Then the protective cover plate is removed, so that the protective cover plate drives the mounting plates on both sides of the bottom to separate from the connecting plate, and the protection operation of the energy consumption module at the top of the connecting plate can be released. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the support plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the connection plate and the protective cover plate of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting plate of the utility model;

[0021] Figure 5 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0022] Description of reference numerals:

[0023] 1. Inverter body; 101. Protective door; 102. Support plate; 2. Fixing mechanism; 201. Telescopic column; 202. Telescopic spring; 203. Sliding bar; 204. Fixing ring; 205. Connecting shaft; 206. Rotating shaft; 207. Fixing block; 208. Connecting rod; 209. Connecting block; 3. Protective mechanism; 301. Connecting plate; 302. Protective cover; 303. Mounting plate; 304. Energy consumption module; 305. Sliding block; 306. Limiting plate; 307. Limiting spring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model provides Figure 1-5 An inverter energy-consuming braking unit with a protective structure is shown, comprising an inverter body 1, one side of the inverter body 1 is rotatably connected to a protective door 101, a plurality of support plates 102 are connected and fixed inside the inverter body 1, one end of the support plate 102 is slidably connected to a fixing mechanism 2 and penetrates into the interior of the support plate 102, a top end of the support plate 102 is connected and fixed to a protective mechanism 3 and is sleeved on the top end of the fixing mechanism 2, through the mutual cooperation between the internal parts of the fixing mechanism 2 and the protective mechanism 3, the energy-consuming braking unit and the inverter body 1 can be installed with each other when the protective door 101 is closed, and when the protective door 101 is opened, the energy-consuming braking unit and the inverter body 1 are released from fixation, thereby facilitating the energy-consuming braking unit to be disassembled and removed from the inside of the inverter body 1.

[0026] Refer to the instruction manual Figure 1-5 The fixing mechanism 2 includes a telescopic column 201, which is slidably connected to one end of the support plate 102 and penetrates into the interior of the support plate 102. A telescopic spring 202 is connected and fixed inside the support plate 102 and is located at one end of the telescopic column 201. A slide bar 203 is connected and fixed to the top of the support plate 102. A fixing ring 204 is connected and fixed to the top of the telescopic column 201 and is located inside the support plate 102. A connecting shaft 205 is rotatably connected to one side of the fixing ring 204. The inner part of the slide bar 203 is fixed to the inner part of the support plate 102. The rotating part is rotatably connected with a rotating shaft 206 and is located above the telescopic column 201. One end of the outer wall of the rotating shaft 206 is connected and fixed with a fixed block 207. One end of the rotating shaft 206 is connected and fixed with a connecting rod 208. A connecting block 209 is connected and fixed between the connecting rod 208 and the connecting shaft 205, and is slidably connected to the inside of the support plate 102 and the slide bar 203. Through the mutual cooperation between the internal parts of the fixing mechanism 2, the protection mechanism 3 can drive the energy-consuming braking unit to be installed and fixed inside the inverter body 1.

[0027] Refer to the instruction manual Figure 1-5The protective mechanism 3 includes a connecting plate 301, which is slidably connected to the top of the supporting plate 102 and is sleeved with the outer wall of the sliding bar 203. A protective cover plate 302 is installed on the top of the connecting plate 301. The two sides of the bottom end of the protective cover plate 302 are connected and fixed with mounting plates 303 and penetrate into the interior of the connecting plate 301. An energy consumption module 304 is installed and fixed on the top of the connecting plate 301 and is located on the inner wall of the protective cover plate 302. A sliding block 305 is slidably connected to the interior of the connecting plate 301 and penetrates into the interior of the mounting plate 303. The top of the sliding block 305 is connected and fixed to a limiting plate 306 and is located inside the connecting plate 301. One side of the limiting plate 306 is connected and fixed to a limiting spring 307. Through the mutual cooperation between the internal parts of the protective mechanism 3, the connecting plate 301 can drive the energy consumption module 304 to be removed from the supporting plate 102, and the protective cover plate 302 can release the protective operation of the energy consumption module 304.

[0028] Refer to the instruction manual Figure 1-5 A contraction groove matching the telescopic column 201 is opened inside the support plate 102, and the rotating shaft 206 is rotatably connected to the slide bar 203 through a bearing. A sliding groove matching the connecting block 209 is opened inside the slide bar 203 and the support plate 102. The contraction groove opened inside the support plate 102 facilitates the telescopic column 201 to extend and slide inside the support plate 102.

[0029] Refer to the instruction manual Figure 1-5 A connecting groove matching the slide bar 203 is provided at the bottom end of the connecting plate 301, a circular arc surface is provided on the contact surface between the sliding block 305 and the slide bar 203, and a limiting groove matching the limiting plate 306 is provided inside the connecting plate 301. Through the connecting groove at the bottom end of the connecting plate 301, the connecting plate 301 can slide on the slide bar 203, so that the slide bar 203 squeezes the sliding block 305 to move.

[0030] Refer to the instruction manual Figure 1-5 The two sides of the top of the connecting plate 301 are provided with mounting grooves matching the mounting plate 303, the inner side of the mounting plate 303 is provided with a fixing groove matching the sliding block 305, and the outer side of the mounting plate 303 is provided with an arc plate that engages with the mounting groove, which passes through the inner side of the mounting plate 303. The fixing groove is convenient for the sliding block 305 to move from the connecting plate 301 to the inside of the mounting plate 303, completing the connection and fixation between the connecting plate 301 and the mounting plate 303.

[0031] How this utility works:

[0032] Refer to the instruction manual Figure 1-5, by opening the protective door 101, the protective door 101 is opened to release the squeezing of the telescopic column 201, so that the telescopic column 201 releases the squeezing of the telescopic spring 202, and the telescopic spring 202 resets to push the telescopic column 201 to slide out from the inside of the support plate 102, and the movement of the telescopic column 201 drives the top fixing ring 204 to move, and the movement of the fixing ring 204 drives the connecting shaft 205 to move, and the connecting shaft 205 moves through the connecting block 209, and the movement of the connecting block 209 drives the connecting rod 208 to move, so that the connecting rod 208 drives the rotating shaft 206 to rotate, and the rotation of the rotating shaft 206 drives the fixing block 207 to move, so that the fixing block 207 moves from the bottom end of the connecting plate 301 to the inside of the slide bar 203, and the connection and fixation between the connecting plate 301 and the slide bar 203 can be released, so that the connecting plate 301 can slide out from the top of the support plate 102 through the slide bar 203, and drive the energy consumption module 304 and the inverter body 1 to separate from each other;

[0033] Refer to the instruction manual Figure 1-5 , the connecting plate 301 slides out from the top of the support plate 102, the connecting plate 301 and the slide bar 203 are separated from each other, so that the two sides of the slide bar 203 release the squeezing of the sliding block 305, so that the sliding block 305 drives the limit plate 306 to release the squeezing of the limit spring 307, and the limit spring 307 resets and pushes the limit plate 306 to move. The movement of the limit plate 306 drives the sliding block 305 to move, so that the sliding block 305 moves from the inside of the mounting plate 303 to the inside of the connecting plate 301, and the installation and fixation between the mounting plate 303 and the connecting plate 301 are released, and then the protective cover plate 302 is removed, so that the protective cover plate 302 drives the mounting plates 303 on both sides of the bottom to separate from the connecting plate 301, and the protection operation of the energy consumption module 304 at the top of the connecting plate 301 can be released.

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A frequency converter energy-consuming braking unit with a protective structure, comprising a frequency converter body (1), characterized in that: A protective door (101) is rotatably connected to one side of the inverter body (1); a plurality of support plates (102) are connected and fixed inside the inverter body (1); one end of the support plate (102) is slidably connected to a fixing mechanism (2) and penetrates into the interior of the support plate (102); a protective mechanism (3) is connected and fixed to the top of the support plate (102) and is sleeved on the top of the fixing mechanism (2).

2. The inverter dynamic braking unit with a protective structure according to claim 1, characterized in that: The fixing mechanism (2) comprises a telescopic column (201), the telescopic column (201) is slidably connected to one end of the support plate (102) and penetrates into the interior of the support plate (102), a telescopic spring (202) is connected and fixed inside the support plate (102) and is located at one end of the telescopic column (201), a sliding bar (203) is connected and fixed to the top end of the support plate (102), a fixing ring (204) is connected and fixed to the top end of the telescopic column (201) and is located inside the support plate (102), and the fixing ring One side of the sliding bar (203) is rotatably connected to a connecting shaft (205), the interior of the sliding bar (203) is rotatably connected to a rotating shaft (206) and is located above the telescopic column (201), one end of the outer wall of the rotating shaft (206) is connected and fixed to a fixing block (207), one end of the rotating shaft (206) is connected and fixed to a connecting rod (208), a connecting block (209) is connected and fixed between the connecting rod (208) and the connecting shaft (205), and is slidably connected to the interior of the supporting plate (102) and the sliding bar (203).

3. The inverter dynamic braking unit with a protective structure according to claim 1, characterized in that: The protection mechanism (3) comprises a connecting plate (301), wherein the connecting plate (301) is slidably connected to the top of the supporting plate (102) and is sleeved with the outer wall of the sliding bar (203); a protection cover plate (302) is installed at the top of the connecting plate (301); mounting plates (303) are connected and fixed to both sides of the bottom of the protection cover plate (302) and penetrate into the interior of the connecting plate (301); an energy consumption module (304) is installed and fixed to the top of the connecting plate (301) and is located on the inner wall of the protection cover plate (302); a sliding block (305) is slidably connected to the interior of the connecting plate (301) and penetrates into the interior of the mounting plate (303); the top of the sliding block (305) is connected and fixed to a limiting plate (306) and is located inside the connecting plate (301); and one side of the limiting plate (306) is connected and fixed to a limiting spring (307).

4. The inverter dynamic braking unit with a protective structure according to claim 2, characterized in that: The support plate (102) is provided with a contraction groove matching the telescopic column (201), the rotating shaft (206) is rotatably connected to the slide bar (203) via a bearing, and the slide bar (203) and the support plate (102) are provided with sliding grooves matching the connection block (209).

5. The inverter dynamic braking unit with a protective structure according to claim 3, characterized in that: The bottom end of the connecting plate (301) is provided with a connecting groove matching the slide bar (203), the contact surface between the sliding block (305) and the slide bar (203) is provided with an arc surface, and the interior of the connecting plate (301) is provided with a limiting groove matching the limiting plate (306).

6. The inverter dynamic braking unit with a protective structure according to claim 3, characterized in that: The top sides of the connecting plate (301) are provided with mounting grooves matching the mounting plate (303), the inner side of the mounting plate (303) is provided with a fixing groove matching the sliding block (305), and the outer side of the mounting plate (303) is provided with an arc plate engaging with the mounting groove.

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