A frequency converter convenient to maintain

Abstract

The utility model discloses a kind of frequency converters facilitating maintenance, including heat dissipation pedestal and the frequency converter shell for installing frequency conversion component, two installation grooves are oppositely provided on the heat dissipation pedestal, the inside of the installation groove is equipped with rotating rod, the side wall of the rotating rod is equipped with several clamping units for installing frequency converter shell, the heat dissipation pedestal is equipped with the driving assembly for driving rotating rod rotation, the utility model relates to frequency converter technical field, the quick clamping installation of frequency converter shell is realized by several clamping units on rotating rod, and the clamping effect of clamping unit is opened by driving assembly driving rotating rod, the disassembly of frequency converter shell is realized, installation or replacement can be completed without using tool, maintenance time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a frequency converter that is easy to maintain. Background Technology

[0002] A frequency converter is a control device that uses the switching action of power semiconductor devices to convert industrial frequency power into electrical energy of another frequency. With the rapid development of modern power electronics and microelectronics technologies, high-voltage, high-power variable frequency speed control devices have become increasingly sophisticated. Previously difficult-to-solve high-voltage problems have been effectively solved in recent years through device series connection or unit series connection. High-voltage, high-power variable frequency speed control devices are widely used in various fans, pumps, compressors, rolling mills, etc., in large-scale mining plants, petrochemical plants, municipal water supply, metallurgy, steel, and power energy industries.

[0003] Traditional frequency converters typically use a fixed installation method, fixing the converter housing to the heat sink base with bolts or clips. However, this type of structure often requires the removal of multiple fasteners during maintenance, which is cumbersome and time-consuming. Especially in scenarios where frequent replacement or repair of frequency converter components is required, the maintenance efficiency is low. Therefore, a frequency converter that is easy to maintain is provided. Utility Model Content

[0004] The purpose of this invention is to provide a frequency converter that is easy to maintain, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a frequency converter that is easy to maintain, comprising a heat dissipation base and a frequency converter housing for mounting frequency conversion components. The heat dissipation base is provided with two mounting slots opposite each other. A rotating rod is provided on the inner side of the mounting slot. A plurality of snap-fit ​​units for mounting the frequency converter housing are provided on the side wall of the rotating rod. The heat dissipation base is provided with a drive component for driving the rotating rod to rotate.

[0006] Preferably, the snap-fit ​​unit includes an L-shaped snap-fit ​​block fixedly mounted on the rotating rod, the contact end of the L-shaped snap-fit ​​block is set as an inclined surface, a spring is provided between the L-shaped snap-fit ​​block and the inner wall of the mounting groove, and the inner wall of the inverter housing is provided with a snap-fit ​​groove adapted to the L-shaped snap-fit ​​block.

[0007] Preferably, the drive assembly includes a groove disposed on a heat dissipation base and located on one side of the rotating rod. A slider is spring-connected to the bottom of the groove. A hand-held part extending out of the groove is provided at the upper end of the slider. A fixing post is provided on the side wall of the slider. An L-shaped groove adapted to the fixing post is provided inside the groove. A slot is provided at the bottom of the slider. The rotating shaft end of the rotating rod extends into the groove and is provided with an insert.

[0008] Preferably, the insert block is configured as a square block, and the slot is configured as a square groove.

[0009] Preferably, the end of the heat dissipation base away from the inverter housing is provided with a number of evenly distributed heat dissipation fins.

[0010] Preferably, the side wall of the heat dissipation base is provided with an annular sealing ring that is compatible with the inverter housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides an easy-to-maintain frequency converter, which realizes the quick snap-fit ​​installation of the frequency converter housing through several snap-fit ​​units on the rotating rod, and realizes the disassembly of the frequency converter housing by driving the rotating rod through the drive component to open the snap-fit ​​effect of the snap-fit ​​units. Installation or replacement can be completed without the use of tools, which greatly shortens the maintenance time. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model; Figure 2 This is a top sectional view of the present invention. Figure 3 for Figure 1 A magnified schematic diagram of the structure at point A.

[0013] In the diagram: 1. Heat dissipation base; 2. Inverter housing; 3. Mounting slot; 4. Rotating rod; 5. Snap-fit ​​unit; 51. L-shaped snap-fit ​​block; 52. Spring; 53. Snap-fit ​​groove; 6. Drive assembly; 61. Groove; 62. Slider; 63. Handheld part; 64. Fixing post; 65. L-shaped slide; 66. Slot; 67. Insert block; 7. Heat dissipation fins; 8. Annular sealing ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: an easy-to-maintain frequency converter, including a heat dissipation base 1 and a frequency converter housing 2 for installing frequency conversion components. The heat dissipation base 1 has two mounting slots 3 opposite to each other. A rotating rod 4 is provided on the inner side of the mounting slot 3. Several snap-fit ​​units 5 for installing the frequency converter housing 2 are provided on the side wall of the rotating rod 4. The heat dissipation base 1 is provided with a drive assembly 6 for driving the rotating rod 4 to rotate. In actual use, the frequency converter housing 2 is aligned with the heat dissipation base 1, and the frequency converter housing 2 is pushed to snap the snap-fit ​​units 5. The snap-fit ​​units 5 on the rotating rod 4 realize the quick snap-fit ​​installation of the frequency converter housing 2. The drive assembly 6 drives the rotating rod 4 to open the snap-fit ​​units 5, realizing the disassembly of the frequency converter housing 2. Installation or replacement can be completed without the use of tools, which greatly shortens the maintenance time.

[0016] Specifically, the latching unit 5 includes an L-shaped latching block 51 fixedly mounted on the rotating rod 4. One end of the L-shaped latching block 51 is fixed to the side wall of the rotating rod 4, and the other end of the L-shaped latching block 51 extends out of the mounting groove 3. The contact end of the L-shaped latching block 51 is set as an inclined surface. This design allows the inverter housing 2 to contact and move relative to the inclined surface of the L-shaped latching block 51 during the pushing process, thereby driving the L-shaped latching block 51 to rotate. A spring 52 is provided between the L-shaped latching block 51 and the inner wall of the mounting groove 3. The spring 52 is used to provide elastic restoring force. When the inverter housing 2 is pushed in, the latching block 51 rotates and compresses the spring 52. Subsequently, the elastic force of the spring 52 causes the L-shaped latching block 51 to automatically reset and form a latching connection with the latching groove 53 in the inverter housing 2. The inner wall of the inverter housing 2 is provided with a latching block. A matching slot 53 is provided for the 51 phases. The slot 53 is located on the inner wall of the inverter housing 2, and its shape is perfectly matched with the snap-fit ​​end of the L-shaped block 51 to form a mechanical lock. The depth and width of the slot 53 need to be precisely designed to ensure that the L-shaped block 51 can be firmly embedded under the action of spring force, while avoiding jamming. During installation, the inverter housing 2 is aligned with the heat dissipation base 1, and the inverter housing 2 is pushed to move axially. The inclined surface of the L-shaped block 51 contacts the inverter housing 2, causing the L-shaped block 51 to rotate under force and compress the spring 52. Then the spring 52 returns to its original position, the L-shaped block 51 pops out and engages with the slot 53 to complete the fixation. During disassembly, the rotating rod 4 is driven to rotate by the drive assembly 6, so that the snap-fit ​​end of the L-shaped block 51 is disengaged from the slot 53, and the inverter housing 2 can be easily pulled out.

[0017] Specifically, the drive assembly 6 includes a groove 61 disposed on the heat dissipation base 1 and located on one side of the rotating rod 4. A slider 62 is spring-connected to the bottom of the groove 61. A handle 63 extending out of the groove 61 is provided at the upper end of the slider 62. A fixing post 64 is provided on the side wall of the slider 62. An L-shaped groove 65, adapted to the fixing post 64, is provided inside the groove 61. The L-shaped groove 65, in conjunction with the fixing post 64, limits the rotation and movement of the slider 62, ensuring that the slot 66 and the insert 67 correspond. The bottom of the slider 62 has a slot 66. The rotating shaft end of rod 4 extends into groove 61 and is provided with insert block 67. In the initial state, under the action of spring force, slider 62 moves away from the bottom of groove 61. At this time, slot 66 disengages from insert block 67. During disassembly, by pressing the hand handle 63, slider 62 is moved downward, so that insert block 67 on rotating rod 4 extends into slot 66 of slider 62. Rotating hand handle 63 drives slider 62, slot 66, insert block 67 and rotating rod 4 to rotate, so that rotating rod 4 drives L-shaped card block 51 to disengage from card slot 53, and inverter housing 2 can be easily pulled out.

[0018] Specifically, the insert 67 is set as a square block and the slot 66 is set as a square groove. The square cross-section design of the insert 67 and the slot 66 can limit the relative sliding between the two and avoid transmission failure caused by radial displacement during rotation.

[0019] Specifically, the heat dissipation base 1 is provided with several evenly distributed heat dissipation fins 7 at the end away from the inverter housing 2. The heat dissipation fins 7 are usually multiple parallel fins arranged along the circumference or axial direction of the heat dissipation base 1 to ensure uniform heat dissipation.

[0020] Specifically, the side wall of the heat dissipation base 1 is provided with an annular sealing ring 8 that is compatible with the inverter housing 2. Through the elastic deformation of the annular sealing ring 8, it tightly fits the joint between the inverter housing 2 and the heat dissipation base 1, preventing dust, moisture, oil and other substances from corroding the internal electronic components.

[0021] Working principle: During installation, when the inverter housing 2 is aligned with the heat dissipation base 1 and pushed, the inner wall of the housing 2 contacts the inclined surface of the L-shaped locking block 51, forcing the locking block 51 and the rotating rod 4 to rotate and compress the spring 52. The restoring force of the spring 52 causes the L-shaped locking block 51 to pop out and embed into the slot 53 of the inverter housing 2, completing the mechanical locking. During disassembly, pressing the handle 63 causes the slider 62 to move down in the groove 61, and the insert 67 is inserted into the slot 66 of the slider 62, forming a transmission connection. Rotating the handle 63 causes the slider 62 to drive the insert 67 to rotate, which in turn drives the rotating rod 4 to rotate. The rotation of the rotating rod 4 causes the locking end of the L-shaped locking block 51 to disengage from the slot 53, and the inverter housing 2 can be easily pulled out.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] 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 frequency converter that is easy to maintain, comprising a heat dissipation base (1) and a frequency converter housing (2) for mounting frequency conversion components, characterized in that: The heat dissipation base (1) is provided with two mounting slots (3) opposite to each other. The inner side of the mounting slot (3) is provided with a rotating rod (4). The side wall of the rotating rod (4) is provided with several snap-fit ​​units (5) for mounting the inverter housing (2). The heat dissipation base (1) is provided with a drive assembly (6) for driving the rotating rod (4) to rotate.

2. The frequency converter for easy maintenance according to claim 1, characterized in that: The snap-fit ​​unit (5) includes an L-shaped snap-fit ​​block (51) fixedly mounted on the rotating rod (4). The contact end of the L-shaped snap-fit ​​block (51) is set as an inclined surface. A spring (52) is provided between the L-shaped snap-fit ​​block (51) and the inner wall of the mounting groove (3). The inner wall of the inverter housing (2) is provided with a snap-fit ​​groove (53) that is adapted to the L-shaped snap-fit ​​block (51).

3. The frequency converter for easy maintenance according to claim 1, characterized in that: The drive assembly (6) includes a groove (61) disposed on the heat dissipation base (1) and located on one side of the rotating rod (4). A slider (62) is spring-connected to the bottom of the groove (61). The upper end of the slider (62) is provided with a hand-held part (63) extending out of the groove (61). A fixing post (64) is provided on the side wall of the slider (62). An L-shaped groove (65) adapted to the fixing post (64) is provided inside the groove (61). A slot (66) is provided at the bottom of the slider (62). The rotating shaft end of the rotating rod (4) extends into the groove (61) and is provided with an insert (67).

4. The frequency converter for easy maintenance according to claim 3, characterized in that: The insert (67) is configured as a square block, and the slot (66) is configured as a square groove.

5. The frequency converter for easy maintenance according to claim 1, characterized in that: The heat dissipation base (1) has several evenly distributed heat dissipation fins (7) at one end away from the inverter housing (2).

6. The frequency converter that is easy to maintain according to claim 1, characterized in that: The heat dissipation base (1) is provided with an annular sealing ring (8) that is compatible with the inverter housing (2) on its side wall.

Images