CN219041038U

CN219041038U - Fixing device for low-voltage alternating-current contactor

Info

Publication number: CN219041038U
Application number: CN202221987127.3U
Authority: CN
Inventors: 林泽鑫; 夏守先; 丰波
Original assignee: Guangzhou Longyue Electric Technology Co ltd
Current assignee: Guangzhou Longyue Electric Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-05-16
Anticipated expiration: 2032-07-29

Abstract

The utility model relates to the technical field of power equipment, and discloses a fixing device for a low-voltage alternating-current contactor, which solves the problems that when the fixing device for the current low-voltage alternating-current contactor is fixed, the fixing device is influenced by an upper space during manual rotation and is inconvenient to operate in a tool rotation fixing mode.

Description

Fixing device for low-voltage alternating-current contactor

Technical Field

The utility model belongs to the technical field of power equipment, and particularly relates to a fixing device for a low-voltage alternating-current contactor.

Background

The ac contactor is a low-voltage control electric appliance which is commonly applied in electric dragging and automatic control systems, and is used as an executing element for switching on and off lines or frequently controlling equipment such as a motor and the like to run.

According to the authorized bulletin number: CN208539341U, entitled "fixing device for low-voltage ac contactor", describes in the specification: the low-voltage alternating-current contactor is horizontally placed on the bottom plate 6, the threaded rod 2 rotates in the threaded hole 13 through the rotation of the fixing block 1, the bearing 12 at the lower end of the threaded rod 2 is driven to rotate through the rotation of the threaded rod 2, the baffle plate 4 slides on the inner side of the box body 5 through the rotation of the bearing 12, the baffle plate 4 slides downwards and is abutted on the low-voltage alternating-current contactor, the bottom plate 6 is fixed between the baffle plate 4 and the bottom plate 6 under the low-voltage alternating-current contactor, and the fixation of the low-voltage alternating-current contactor is completed; the following drawbacks still remain:

the fixing of the low-voltage alternating-current contactor is realized by driving the threaded rod to move downwards through the rotation fixing block, the low-voltage alternating-current contactor is tightly pressed by the baffle, and the threaded rod moves up and down and is limited by the space above the fixing plate.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the fixing device for the low-voltage alternating-current contactor, which effectively solves the problems that the fixing device of the current low-voltage alternating-current contactor is influenced by an upper space during manual rotation and is inconvenient to operate in a mode of rotating and fixing by using a tool.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the fixing device for the low-voltage alternating-current contactor comprises a box body, wherein a pay-off plate is connected to the lower portion of the inner wall of the box body, a bottom plate is connected to the upper portion of the pay-off plate, a fixing plate is connected to the upper portion of the bottom plate, and a pressing mechanism is connected to the upper end of the fixing plate;

the pushing mechanism comprises a shell, the inside symmetrical of the shell is connected with a waist-shaped frame, the inside of the two waist-shaped frames is rotationally connected with a driven bevel gear, the inside of the driven bevel gear is in threaded connection with a screw rod, the lower end of the screw rod extends to the lower portion of a fixed plate to be connected with a baffle, the screw rod is rotationally connected with the baffle, the upper ends of the two waist-shaped frames are fixedly connected with guide cylinders, the screw rod is located in the guide cylinders, limit grooves are formed in the sides, away from each other, of the screw rods on the two sides, limit rods are connected with the two sides of the lower end of the shell, and the limit rods are in sliding connection with the limit grooves.

Preferably, two opposite sides of the upper part of the waist-shaped frame are fixedly connected with fixed tables, and a rotating shaft is rotatably connected between the two fixed tables.

Preferably, the middle part of the outer end of the rotating shaft is fixedly sleeved with a worm wheel, the lower end of the worm wheel is connected with a worm in a meshed mode, the inner walls of the uniform shells at the two ends of the worm are connected in a rotating mode, and one end of the worm extends to the outside of the shell and is connected with a handle.

Preferably, both sides of the outer end of the rotating shaft are fixedly sleeved with driving bevel gears, and the two driving bevel gears are correspondingly meshed with driven bevel gears on both sides.

Preferably, the upper end and the lower end of the driven bevel gear are connected with the first bearings at the corresponding connection ends in the waist-shaped frames, and the driven bevel gear is internally provided with an internal threaded hole matched with the screw rod.

Preferably, the second bearings are connected at the connecting ends of the two ends of the rotating shaft and the fixed tables at the two sides.

Preferably, a third bearing is connected to the connecting end of the screw rod and the baffle plate.

Preferably, the shell comprises a lower plate, the upper end of the lower plate is connected with a coaming, the upper end of the coaming is connected with an upper plate, and the lower plate, the coaming and the upper plate are connected through bolts.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the arrangement of the pressing mechanism, the worm is driven to be meshed with the worm wheel through the rotating handle, and then the driving bevel gears on two sides are driven to be meshed with the driven bevel gears on two sides through the rotating shaft, so that the driven bevel gears rotate, the screw rod can move up and down, the baffle can gradually move down to be contacted and tightly pressed with the upper end of the low-voltage alternating-current contactor, or the baffle moves upwards to be loosened with the low-voltage alternating-current contactor, so that the fixing and the dismounting of the low-voltage alternating-current contactor can be completed, the handle is positioned at the front end, the upper space limitation can be avoided during the rotating operation, tools are not needed, the operation is convenient, meanwhile, the worm and the worm wheel transmission mechanism have self-locking property, and can be kept stable after being pressed and fixed, and is not easy to loosen.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the pressing mechanism of the present utility model;

FIG. 3 is a partial cross-sectional view of the present utility model;

FIG. 4 is a partial cross-sectional view from another perspective of the present utility model;

in the figure: 1. a case; 2. paying-off plates; 3. a bottom plate; 4. a fixing plate; 5. a pressing mechanism; 501. a housing; 502. a waist-shaped frame; 503. a driven bevel gear; 504. a screw; 505. a baffle; 506. a guide cylinder; 507. a fixed table; 508. a rotating shaft; 509. a worm wheel; 510. a worm; 511. a handle; 512. a drive bevel gear; 513. a first bearing; 514. a second bearing; 515. a third bearing; 516. a limit groove; 517. and a limit rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The first embodiment is shown in fig. 1-4, the utility model comprises a box body 1, a pay-off plate 2 is connected to the lower part of the inner wall of the box body 1, a bottom plate 3 is connected to the upper part of the pay-off plate 2, a fixed plate 4 is connected to the upper part of the bottom plate 3, and a pressing mechanism 5 is connected to the upper end of the fixed plate 4;

the lower pressing mechanism 5 comprises a shell 501, a waist-shaped frame 502 is symmetrically connected inside the shell 501, driven bevel gears 503 are rotatably connected inside the two waist-shaped frames 502, a screw rod 504 is conveniently connected inside the driven bevel gears 503, first bearings 513 are connected at the upper and lower ends of the two driven bevel gears 503 and the inner connecting ends of the corresponding waist-shaped frames 502, internal threaded holes matched with the screw rod 504 are formed inside the driven bevel gears 503, the driven bevel gears 503 and the waist-shaped frames 502 can be rotatably connected through the arrangement of the first bearings 513, the lower ends of the screw rod 504 extend to the lower part of a fixed plate 4 and are connected with a baffle 505, the screw rod 504 is rotatably connected with the baffle 505, the connecting ends of the screw rod 504 and the baffle 505 are connected with a third bearing 515, when the screw rod 504 moves downwards, the baffle 505 contacts a low-voltage alternating-current contactor, the baffle 505 does not rotate along with the continuous rotation of the screw rod 504, the wear of the low-voltage alternating-current contactor can be reduced, the upper ends of the two waist-shaped frames 502 are fixedly connected with a guide cylinder 506, the screw rod 504 is positioned in the guide cylinder 506, one side of the screw rod 504 is far away from the worm wheel 516, one side of the worm wheel 508 is rotatably connected with the two side of the guide cylinder 508, the two side of the guide cylinder 508 is fixedly connected with the upper limit table 508, the two side of the upper limit table 508 is fixedly connected with the two limit tables 510, the two limit tables are fixedly connected with the two limit tables 510, the two limit tables 510 are fixedly connected with the two side shafts 510, the upper end of the upper limit tables of the limit tables are fixedly connected with the upper end of the limit table 510, and the limit table 510, the upper end of the limit table is fixedly connected with the limit table, and the upper end of the limit table 510, the upper end of the limit table is fixedly rotates, and the upper end of the lower end of the limit table is respectively, the lower end is respectively, and the lower end of the lower limit table is respectively, the lower end is. Drive bevel gears 512 are fixedly sleeved on two sides of the outer end of the rotating shaft 508, and the two drive bevel gears 512 are correspondingly meshed with driven bevel gears 503 on two sides.

In the second embodiment, on the basis of the first embodiment, the housing 501 includes a lower plate, the upper end of the lower plate is connected with a coaming, the upper end of the coaming is connected with an upper plate, the lower plate, the coaming and the upper plate are connected through bolts, and through such a split structure, the pressing mechanism 5 can be conveniently installed during assembly.

Working principle: when the low-voltage alternating-current contactor is used, the low-voltage alternating-current contactor is horizontally placed on the bottom plate 3, the handle 511 is rotated, the worm 510 is driven to rotate by the handle 511, the worm 510 is meshed with the worm gear 509 to drive the rotating shaft 508 to rotate, the driving bevel gears 512 on two sides rotate along with the rotation of the rotating shaft 508, the driving bevel gears 512 on two sides are meshed with the driven bevel gears 503 on two sides to drive the driven bevel gears 503 to rotate, and the driven bevel gears 503 are in threaded connection with the driven bevel gears 503, and meanwhile, the limiting rod 517 and the limiting groove 516 can limit the position, so that the driven bevel gears 503 can move up and down when rotating, the baffle 505 can gradually move downwards to be contacted and abutted with the upper end of the low-voltage alternating-current contactor, or the baffle 505 is loose with the low-voltage alternating-current contactor, and fixing and dismounting of the low-voltage alternating-current contactor can be completed.

Claims

1. A fixing device for a low-voltage ac contactor, comprising a casing (1), characterized in that: the paying-off board (2) is connected to the lower portion of the inner wall of the box body (1), the bottom board (3) is connected to the upper portion of the paying-off board (2), the fixing board (4) is connected to the upper portion of the bottom board (3), and the pressing mechanism (5) is connected to the upper end of the fixing board (4);

the pushing mechanism (5) comprises a shell (501), the inside symmetry of the shell (501) is connected with a waist-shaped frame (502), driven bevel gears (503) are rotationally connected inside the two waist-shaped frames (502), screw rods (504) are connected with inner threads of the driven bevel gears (503), the lower ends of the screw rods (504) extend to the lower portion of a fixed plate (4) and are connected with baffle plates (505), the screw rods (504) are rotationally connected with the baffle plates (505), the upper ends of the two waist-shaped frames (502) are fixedly connected with guide barrels (506), the screw rods (504) are located in the guide barrels (506), limit grooves (516) are formed in the sides, far away from each other, of the screw rods (504) on two sides, of the lower ends of the shell (501), and limit rods (517) are connected with the limit grooves (516) in a sliding mode.

2. A fixture for a low voltage ac contactor as recited in claim 1, wherein: two opposite sides of the upper parts of the waist-shaped frames (502) are fixedly connected with fixed tables (507), and a rotating shaft (508) is rotatably connected between the two fixed tables (507).

3. A fixture for a low voltage ac contactor as claimed in claim 2, wherein: the middle part of the outer end of the rotating shaft (508) is fixedly sleeved with a worm wheel (509), the lower end of the worm wheel (509) is connected with a worm (510) in a meshed mode, two ends of the worm (510) are uniformly connected with the inner wall of the shell (501) in a rotating mode, and one end of the worm (510) extends to the outer portion of the shell (501) and is connected with a handle (511).

4. A fixture for a low voltage ac contactor as claimed in claim 2, wherein: and driving bevel gears (512) are fixedly sleeved on two sides of the outer end of the rotating shaft (508), and the two driving bevel gears (512) are correspondingly meshed with driven bevel gears (503) on two sides.

5. A fixture for a low voltage ac contactor as recited in claim 1, wherein: the upper end and the lower end of the driven bevel gears (503) are connected with first bearings (513) at the inner connecting ends of the corresponding waist-shaped frames (502), and the driven bevel gears (503) are internally provided with internal threaded holes matched with the threaded rods (504).

6. A fixture for a low voltage ac contactor as claimed in claim 2, wherein: and the connection ends of the two ends of the rotating shaft (508) and the fixed tables (507) on the two sides are connected with second bearings (514).

7. A fixture for a low voltage ac contactor as recited in claim 1, wherein: and a third bearing (515) is connected at the connecting end of the screw (504) and the baffle (505).

8. A fixture for a low voltage ac contactor as recited in claim 1, wherein: the shell (501) comprises a lower plate, the upper end of the lower plate is connected with a coaming, the upper end of the coaming is connected with an upper plate, and the lower plate, the coaming and the upper plate are connected through bolts.