Explosion-proof shell of frequency converter

Abstract

The utility model discloses a frequency converter explosion-proof housing in the frequency converter technology field, comprising a frequency converter and a protective housing, the bottom of the frequency converter is provided with mounting seats, a fixing rod is arranged between the mounting seats, the bottom of the fixing rod is provided with a first elastic sheet, the frequency converter is provided with a fixing plate, the fixing plate is internally provided with a fixing block, and the fixing block is provided with a second elastic sheet. A second elastic piece is arranged on the fixing block, first guide grooves are formed in the middles of the left side and the right side of the fixing block on the fixing plate, a second guide groove is formed in the fixing plate, first balls are arranged in the first guide grooves and the second guide groove, and a mounting groove is formed in the bottom of the fixing block; second balls are arranged in the mounting grooves, the fixing blocks slide through rolling of the first balls and the second balls, the friction force between the fixing blocks and the fixing plate and the surface of the frequency converter is reduced, the second elastic pieces better buffer the protection shell, and therefore the protection effect of the protection shell on the frequency converter is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to an explosion-proof casing for a frequency converter. Background Art

[0002] During industrial use, frequency converters control circuits to ensure the normal operation of each device in the circuit. Therefore, frequency converters need to be protected during industrial use to prevent damage to the frequency converter due to accidental impact. For example, a frequency converter explosion-proof protective housing disclosed in Chinese patent literature (patent number: CN202223278581.4) uses shock-absorbing springs as a buffer to protect the frequency converter. However, the spring itself has a certain length and the space available for compression is limited, which affects the protection effect on the frequency converter. Moreover, when the spring is subjected to force in the explosion-proof housing, the contact area between the spring and the frequency converter surface is small, and the pressure per unit area generated by the spring on the frequency converter is large, which can easily damage the frequency converter housing.

[0003] To this end, we propose an inverter explosion-proof enclosure. Utility Model Content

[0004] The purpose of the present utility model is to provide an explosion-proof housing for a frequency converter to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof casing for an inverter, comprising an inverter and a protective shell, a mounting seat being provided at the bottom of the inverter, two groups of mounting seats being provided, a fixing rod being provided between the two groups of mounting seats, a first spring piece being provided at the bottom of the fixing rod, a fixing plate being provided on the inverter, a fixing block being provided in the fixing plate, a second spring piece being provided on the fixing block, a first guide groove being provided on the fixing plate, a second guide groove being provided on the fixing plate, a first ball being provided in the first guide groove and the second guide groove, a mounting groove being provided at the bottom of the fixing block, a second ball being provided in the mounting groove, and a connecting hole being provided on the mounting seat.

[0006] Preferably, two groups of fixing plates are provided, and both groups of fixing plates are L-shaped.

[0007] Preferably, a space is formed between the two groups of fixing plates for installing a fixing block.

[0008] Preferably, the connecting hole matches the bottom of the protective shell.

[0009] Preferably, both ends of the second elastic piece are connected to the fixed block, and both ends of the second elastic piece are fixed to the middle of the fixed block.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the protective shell is subjected to force, squeezing the second spring piece to cause deformation, and the two ends of the second spring piece push the fixed block to move, and the fixed block moves between the two groups of fixed plates, so that the second spring piece reduces the force on the protective shell, thereby effectively protecting the inverter, and the fixed block slides through the rolling of the first ball and the second ball, reducing the friction between the fixed block and the fixed plate and the inverter surface, so that the second spring piece better buffers the protective shell, thereby further improving the protective effect of the protective shell on the inverter, and at the same time, the fixed block increases the contact area with the inverter, and when the protective shell is subjected to external force, the unit area pressure on the inverter surface is reduced, thereby better protecting the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the installation structure of the fixed block of the utility model;

[0013] Figure 3 This is a schematic diagram of the connection structure between the protective shell and the mounting base of the utility model.

[0014] In the figure: 1. Inverter; 2. Protective shell; 3. Mounting base; 4. Fixing rod; 5. First spring piece; 6. Fixing plate; 7. Fixing block; 8. Second spring piece; 9. First guide groove; 10. Second guide groove; 11. First ball; 12. Mounting groove; 13. Second ball; 14. Connecting hole. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1-3The utility model provides a technical solution: an explosion-proof casing of a frequency converter, comprising a frequency converter 1 and a protective shell 2, a mounting seat 3 is provided at the bottom of the frequency converter 1, the mounting seat 3 is provided with two groups, a fixing rod 4 is provided between the two groups of mounting seats 3, a first spring piece 5 is provided at the bottom of the fixing rod 4, a fixing plate 6 is provided on the frequency converter 1, a fixing block 7 is provided in the fixing plate 6, a second spring piece 8 is provided on the fixing block 7, a first guide groove 9 is provided on the fixing plate 6, a second guide groove 10 is provided on the fixing plate 6, a first ball 11 is provided in the first guide groove 9 and the second guide groove 10, a mounting groove 12 is provided at the bottom of the fixing block 7, a second ball 13 is provided in the mounting groove 12, a connecting hole 14 is provided on the mounting seat 3, the frequency converter 1 are provided with fixed plates 6 and fixed blocks 7 on the left and right sides and the top, and both ends of the second spring piece 8 are connected to the fixed blocks 7. When the protective shell 2 is subjected to force, the protective shell 2 is deformed, and the protective shell 2 applies pressure to the second spring piece 8. The second spring piece 8 will relieve the pressure of the protective shell 2, and the second spring piece 8 is deformed. The two ends of the second spring piece 8 push the fixed block 7 to move, and the fixed block 7 moves between the two groups of fixed plates 6, so that the second spring piece 8 relieves the force on the protective shell 2, thereby effectively protecting the inverter, and the fixed block 7 slides through the rolling of the first ball 11 and the second ball 13, reducing the friction between the fixed block 7 and the fixed plate 6 and the surface of the inverter 1, so that the second spring piece 8 can better buffer the protective shell 2, thereby further improving the protective effect of the protective shell on the inverter 1.

[0017] Among them, there are two groups of fixing plates 6, both of which are L-shaped. A space is formed between the two groups of fixing plates 6 for installing the fixing block 7. The two groups of fixing plates 6 position the fixing block 7 so that the fixing block 7 slides between the two groups of fixing plates 6;

[0018] The connection hole 14 cooperates with the bottom of the protective shell 2. When the protective shell 2 is subjected to an external force, it moves and slides in the connection hole 14 by cooperating with the connection hole 14.

[0019] Both ends of the second elastic piece 8 are connected to the fixed block 7 , and both ends of the second elastic piece 8 are fixed in the middle of the fixed block 7 .

[0020] Working principle: When the protective shell 2 is subjected to force, the protective shell 2 is deformed, and the protective shell 2 applies pressure to the second spring piece 8. The second spring piece 8 will reduce the pressure of the protective shell 2, and the second spring piece 8 is deformed. The two ends of the second spring piece 8 push the fixed block 7 to move, and the fixed block 7 moves between the two sets of fixed plates 6, so that the second spring piece 8 reduces the force on the protective shell 2, thereby effectively protecting the inverter, and the fixed block 7 slides through the rolling of the first ball 11 and the second ball 13, reducing the friction between the fixed block 7 and the fixed plate 6 and the surface of the inverter 1, so that the second spring piece 8 can better buffer the protective shell 2, thereby further improving the protective effect of the protective shell on the inverter 1.

[0021] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof housing for a frequency converter, comprising a frequency converter (1) and a protective housing (2), characterized in that: The frequency converter (1) is provided with a mounting seat (3) at the bottom, and the mounting seat (3) is provided with two groups. A fixing rod (4) is provided between the two groups of the mounting seats (3). A first spring piece (5) is provided at the bottom of the fixing rod (4). The frequency converter (1) is provided with a fixing plate (6). A fixing block (7) is provided in the fixing plate (6). A second spring piece (8) is provided on the fixing block (7). The fixing plate (6) is provided with a first guide groove (9) provided in the middle of the left and right sides of the fixing block (7). The fixing plate (6) is provided with a second guide groove (10). First balls (11) are provided in the first guide groove (9) and the second guide groove (10). A mounting groove (12) is provided at the bottom of the fixing block (7). A second ball (13) is provided in the mounting groove (12). A connecting hole (14) is provided on the mounting seat (3).

2. The explosion-proof enclosure for a frequency converter according to claim 1, characterized in that: Two groups of fixing plates (6) are provided, and both groups of fixing plates (6) are L-shaped.

3. The explosion-proof enclosure for a frequency converter according to claim 2, characterized in that: A space is formed between the two groups of fixing plates (6) for installing a fixing block (7).

4. The explosion-proof enclosure for a frequency converter according to claim 1, characterized in that: The connection hole (14) matches the bottom of the protective shell (2).

5. The explosion-proof housing for a frequency converter according to claim 1, characterized in that: Both ends of the second elastic piece (8) are connected to the fixed block (7), and both ends of the second elastic piece (8) are fixed to the middle of the fixed block (7).

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