AC contactor for frequency converter

Abstract

The utility model relates to the technical field of alternating-current contactors, in particular to an alternating-current contactor for a frequency converter, which comprises an alternating-current contactor body, a support plate is fixed on the alternating-current contactor body, a support is arranged on one side, far away from the alternating-current contactor body, of the support plate, and two connecting blocks are integrally formed on two sides of the support respectively. Four sliding blocks are integrally formed on the side, close to the supporting plate, of the support, four dovetail grooves matched with the sliding blocks are formed in the side, away from the alternating current contactor body, of the supporting plate, a protruding block is integrally formed on one side of the support, a check block is integrally formed on the side, close to the protruding block, of the supporting plate, a groove is formed in one side of the protruding block, and an insertion block is arranged in the groove. An inserting groove matched with the inserting block is formed in the side wall of the stop block, two inserting rods are fixed to the side, away from the stop block, of the inserting block, and the two inserting rods are each sleeved with a first spring; after the connecting block is fixed by the bolt, the support plate and the alternating current contactor body can be dismounted for maintenance by pushing the insertion block and sliding the support plate.

Description

Technical Field

[0001] The utility model relates to the technical field of AC contactors, in particular to an AC contactor for a frequency converter. Background Art

[0002] AC contactor is a type of contactor, which is an automatic electrical appliance used to frequently connect and disconnect AC and DC circuits at long distances, or to control large-capacity circuits. AC contactors are mainly composed of electromagnetic systems, contact systems, arc extinguishing systems and other parts. The most commonly used products are CJX2 series, CJ20 series, CJT1 series, 3TB and B series in the CJ series. The principle is to use the main contacts to open and close the circuit and the auxiliary contacts to execute control instructions. When installing the AC contactor for the frequency converter, the AC contactor is usually fixed in a suitable position with bolts. If the AC contactor needs to be removed for maintenance, it is necessary to use tools such as screwdrivers to remove the bolts used to fix the AC contactor one by one, which is time-consuming and labor-intensive. Therefore, an AC contactor for the frequency converter is proposed to facilitate the disassembly of the AC contactor. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides an AC contactor for a frequency converter.

[0004] The technical solution adopted by the utility model to solve its technical problems is an AC contactor for a frequency converter, including an AC contactor body, a support plate fixed on the AC contactor body, a support plate provided on a side of the support plate away from the AC contactor body, two connecting blocks integrally formed on both sides of the support, four sliding blocks integrally formed on a side of the support close to the support plate, four dovetail grooves adapted to the sliding blocks are provided on a side of the support close to the AC contactor body, a protrusion is integrally formed on one side of the support, a stopper is integrally formed on a side of the support plate close to the protrusion, a groove is provided on one side of the protrusion, an insert block is provided in the groove, a slot adapted to the insert block is provided on a side wall of the stopper, two plug rods are fixed on a side of the insert block away from the stopper, a first spring is sleeved on the two plug rods, and two slots for the plug rods to slide are provided on the protrusion.

[0005] By adopting the above technical solution, after the connecting block is fixed with bolts, the support plate and the support can support the AC contactor body. If the AC contactor body needs to be removed for maintenance, it is only necessary to push the plug block away from the block, and the end of the plug block will be disengaged from the block. The support plate can be slid to remove the support plate together with the AC contactor body for maintenance. There is no need to use tools such as screwdrivers, which saves time. During installation, press the plug block, hold the support plate fixed on the AC contactor body, insert the slider into the dovetail groove of the side wall of the support plate, and then release the plug block. The first spring pushes the plug block to move toward the block, and finally the end of the plug block is inserted into the block, which is convenient for the installation of the support plate and the AC contactor body.

[0006] Specifically, a plurality of first anti-slip protrusions are integrally formed on a side of the inserting block away from the inserting rod.

[0007] By adopting the above technical solution, when pressing the insert block, the first anti-slip protrusion can increase the friction between the insert block and the finger, thereby facilitating pressing the insert block.

[0008] Specifically, a protective cover is provided on the side of the AC contactor body away from the support plate, two notches are provided on the protective cover, and protective pads are provided in the two notches. Four limit blocks are integrally formed on the side of the support plate away from the support, and four slots adapted to the limit blocks are provided on the side of the protective cover close to the support plate;

[0009] Two slide grooves are provided on both sides of the protective cover, and blocks are provided in the four slide grooves. Guide rods are fixed to the side walls of the four blocks, and second springs are sleeved on the four guide rods. Four slots for the guide rods to slide are provided on the protective cover, and slots adapted to the blocks are provided on the side walls of the four limit blocks.

[0010] By adopting the above technical solution, the protective cover can protect the AC contactor body, and by pressing the four clamping blocks, the ends of the four clamping blocks are disengaged from the corresponding four limit blocks, making it easy to remove the protective cover.

[0011] Specifically, ventilation slots are provided on both sides of the protective cover, and protective nets are provided in the two ventilation slots.

[0012] By adopting the above technical solution, the ventilation slots are conducive to the dissipation of heat inside the protective cover, and the protective net can block dust and other debris outside the protective cover.

[0013] Specifically, the side walls of the four clamping blocks are integrally formed with a plurality of second anti-slip protrusions.

[0014] By adopting the above technical solution, when pressing the card block, the second anti-slip protrusion can increase the friction between the card block and the finger, thereby facilitating pressing the card block.

[0015] Specifically, positioning columns are integrally formed at four corners of the support plate on one side away from the support, and four through holes adapted to the positioning columns are opened on the protective cover.

[0016] By adopting the above technical solution, when the protective cover is installed, the positioning posts cooperate with the through holes on the protective cover, which facilitates the positioning of the protective cover.

[0017] Beneficial effects of the utility model:

[0018] (1) The utility model discloses an AC contactor for a frequency converter. After the connecting block is fixed by bolts, the support plate and the support seat can support the AC contactor body. If the AC contactor body needs to be removed for maintenance, it is only necessary to push the plug block away from the block, and the end of the plug block will be disengaged from the block. The support plate can be slid to remove the support plate together with the AC contactor body for maintenance. There is no need to use tools such as screwdrivers, which saves time. During installation, the plug block is pressed, and the support plate fixed on the AC contactor body is held. The slider is inserted into the dovetail groove of the side wall of the support plate, and then the plug block is released. The first spring pushes the plug block to move toward the block, and finally the end of the plug block is inserted into the block, which facilitates the installation of the support plate and the AC contactor body.

[0019] (2) The utility model discloses an AC contactor for a frequency converter, wherein the protective cover and the protective net can protect the AC contactor body. By pressing the four clamping blocks, the ends of the four clamping blocks are disengaged from the corresponding four limit blocks, so that the protective cover can be easily removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 For the utility model Figure 1 A magnified view of the structure at center A;

[0023] Figure 3 For the utility model Figure 1 A magnified view of the structure at B in the middle.

[0024] In the figure: 1. AC contactor body; 2. support plate; 3. support; 4. protrusion; 5. slider; 6. connecting block; 7. limit block; 8. protective net; 9. protective pad; 10. protective cover; 11. positioning column; 12. stopper; 13. plug-in block; 14. first anti-slip protrusion; 15. plug-in rod; 16. first spring; 17. clamping block; 18. second anti-slip protrusion; 19. guide rod; 20. second spring. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In order to facilitate the disassembly and subsequent installation of the AC contactor body 1, as an embodiment of the present utility model, Figure 1 , Figure 2As shown, an AC contactor for a frequency converter described in the utility model comprises an AC contactor body 1, on which a support plate 2 is fixed by bolts, a support plate 3 is provided on the side of the support plate 2 away from the AC contactor body 1, two connecting blocks 6 are integrally formed on both sides of the support 3, four sliders 5 are integrally formed on the side of the support 3 close to the support plate 2, four dovetail grooves matching the sliders 5 are provided on the side of the support 3 away from the AC contactor body 1, a protrusion 4 is integrally formed on one side of the support 3, a stopper 12 is integrally formed on the side of the support plate 2 close to the protrusion 4, a groove is provided on one side of the protrusion 4, an insert block 13 is provided in the groove, a slot matching the insert block 13 is provided on the side wall of the stopper 12, two plug rods 15 are welded and fixed on the side of the plug block 13 away from the stopper 12, both of the two plug rods 15 are sleeved with a first spring 16, and two slots for the plug rods 15 to slide are provided on the protrusion 4.

[0027] When in use, after fixing the connecting block 6 with bolts, the support plate 2 and the support 3 can support the AC contactor body 1. If the AC contactor body 1 needs to be removed for maintenance, it is only necessary to push the plug block 13 away from the block 12, and the end of the plug block 13 will be disengaged from the block 12. The support plate 2 can be slid to remove the support plate 2 together with the AC contactor body 1 for maintenance. There is no need to use tools such as screwdrivers, which saves time. During installation, press the plug block 13, hold the support plate 2 fixed on the AC contactor body 1, insert the slider 5 into the dovetail groove of the side wall of the support plate 2, and then release the plug block 13. The first spring 16 pushes the plug block 13 to move toward the block 12, and finally the end of the plug block 13 is inserted into the block 12, which is convenient for the installation of the support plate 2 and the AC contactor body 1.

[0028] In order to facilitate pressing the plug 13, for example, Figure 2 As shown, a plurality of first anti-slip protrusions 14 are integrally formed on a side of the inserting block 13 away from the inserting rod 15 .

[0029] When in use, the inserting block 13 is pressed, and the first anti-slip protrusion 14 can increase the friction between the inserting block 13 and the finger, thereby facilitating the pressing of the inserting block 13 .

[0030] In order to protect the AC contactor body 1, for example, Figure 1 , Figure 3 As shown, a protective cover 10 is provided on the side of the AC contactor body 1 away from the support plate 2, and two notches are provided on the protective cover 10. Protective pads 9 are provided in the two notches. The two protective pads 9 are connected to the protective cover 10 by adhesive. The wires connected to the AC contactor body 1 are passed through the notches. The protective pads 9 can protect the wires. Four limit blocks 7 are integrally formed on the side of the support plate 2 away from the support 3. Four slots adapted to the limit blocks 7 are provided on the side of the protective cover 10 close to the support plate 2;

[0031] Two slide grooves are provided on both sides of the protective cover 10, and blocks 17 are provided in the four slide grooves. Guide rods 19 are welded and fixed to the side walls of the four blocks 17, and second springs 20 are sleeved on the four guide rods 19. Four slots for the guide rods 19 to slide are provided on the protective cover 10, and slots adapted to the blocks 17 are provided on the side walls of the four limit blocks 7.

[0032] When in use, the protective cover 10 can protect the AC contactor body 1 , and by pressing the four clamping blocks 17 , the ends of the four clamping blocks 17 are disengaged from the corresponding four limiting blocks 7 , making it easy to remove the protective cover 10 .

[0033] In order to facilitate heat dissipation, for example, Figure 1 As shown, ventilation slots are provided on both sides of the protective cover 10, and protective nets 8 are provided in the two ventilation slots.

[0034] In order to facilitate pressing the card block 17, for example, Figure 3 As shown, the side walls of the four clamping blocks 17 are integrally formed with a plurality of second anti-slip protrusions 18 .

[0035] When in use, by pressing the card block 17 , the second anti-slip protrusion 18 can increase the friction between the card block 17 and the finger, thereby facilitating the pressing of the card block 17 .

[0036] In order to facilitate the positioning of the protective cover 10, for example, Figure 1 As shown, positioning columns 11 are integrally formed at four corners of the support plate 2 on a side away from the support 3 , and four through holes adapted to the positioning columns 11 are opened on the protective cover 10 .

[0037] When the utility model is in use, after the connecting block 6 is fixed by bolts, the support plate 2 and the support seat 3 can support the AC contactor body 1, and the protective cover 10 and the protective net 8 can protect the AC contactor body 1;

[0038] If the AC contactor body 1 needs to be removed for maintenance, it is only necessary to push the plug 13 away from the stopper 12, and the end of the plug 13 is disengaged from the stopper 12, and the support plate 2 can be slid to remove the support plate 2 together with the AC contactor body 1 for maintenance, without using tools such as screwdrivers, which saves time;

[0039] During installation, press the plug block 13, hold the support plate 2 fixed on the AC contactor body 1, insert the slider 5 into the dovetail groove on the side wall of the support plate 2, and then release the plug block 13. The first spring 16 pushes the plug block 13 to move toward the stop block 12, and finally the end of the plug block 13 is inserted into the stop block 12, which facilitates the installation of the support plate 2 and the AC contactor body 1.

[0040] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. An AC contactor for a frequency converter, characterized in that: The AC contactor comprises an AC contactor body (1), a support plate (2) is fixed on the AC contactor body (1), a support (3) is provided on the side of the support plate (2) away from the AC contactor body (1), two connecting blocks (6) are integrally formed on both sides of the support (3), four sliders (5) are integrally formed on the side of the support (3) close to the support plate (2), four dovetail grooves adapted to the sliders (5) are provided on the side of the support plate (2) away from the AC contactor body (1), and one side of the support (3) is integrally formed with a plurality of connecting blocks (6). A protrusion (4) is formed, a stopper (12) is integrally formed on one side of the support plate (2) close to the protrusion (4), a groove is provided on one side of the protrusion (4), an inserting block (13) is provided in the groove, a slot adapted to the inserting block (13) is provided on the side wall of the stopper (12), two inserting rods (15) are fixed on the side of the inserting block (13) away from the stopper (12), both of the two inserting rods (15) are sleeved with a first spring (16), and two slots for the inserting rods (15) to slide are provided on the protrusion (4).

2. The AC contactor for a frequency converter according to claim 1, characterized in that: A plurality of first anti-slip protrusions (14) are integrally formed on a side of the insert block (13) away from the insert rod (15).

3. The AC contactor for a frequency converter according to claim 1, characterized in that: A protective cover (10) is provided on the side of the AC contactor body (1) away from the support plate (2), two notches are provided on the protective cover (10), and protective pads (9) are provided in both notches; four limit blocks (7) are integrally formed on the side of the support plate (2) away from the support seat (3), and four slots adapted to the limit blocks (7) are provided on the side of the protective cover (10) close to the support plate (2); Two slide grooves are provided on both sides of the protective cover (10), and blocks (17) are provided in the four slide grooves. Guide rods (19) are fixed to the side walls of the four blocks (17), and second springs (20) are sleeved on the four guide rods (19). Four slots for the guide rods (19) to slide are provided on the protective cover (10), and slots adapted to the blocks (17) are provided on the side walls of the four limit blocks (7).

4. The AC contactor for a frequency converter according to claim 3, characterized in that: Ventilation slots are provided on both sides of the protective cover (10), and protective nets (8) are provided in the two ventilation slots.

5. The AC contactor for a frequency converter according to claim 3, characterized in that: The side walls of the four clamping blocks (17) are all integrally formed with a plurality of second anti-slip protrusions (18).

6. The AC contactor for a frequency converter according to claim 3, characterized in that: Positioning columns (11) are integrally formed at the four corners of the support plate (2) on the side away from the support seat (3), and the protective cover (10) is provided with four through holes adapted to the positioning columns (11).

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