CN111697747A - Quick locking device for motor junction box - Google Patents
Quick locking device for motor junction box Download PDFInfo
- Publication number
- CN111697747A CN111697747A CN202010393006.5A CN202010393006A CN111697747A CN 111697747 A CN111697747 A CN 111697747A CN 202010393006 A CN202010393006 A CN 202010393006A CN 111697747 A CN111697747 A CN 111697747A
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- Prior art keywords
- locking device
- junction box
- housing
- oval
- rod
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to a quick locking device for a motor junction box, which comprises a housing covered on a junction box base, wherein a locking device corresponding to a screw hole of the junction box is arranged at the bottom of the housing, and the locking device is fixed on the junction box under the action of the locking device; the wiring box is characterized in that an oval rotary table is horizontally arranged inside the housing, the oval rotary table is fixed inside the housing through a fixing rod, a manual rotary wheel is installed after the upper end of the fixing rod extends out of the housing, the manual rotary wheel is connected with the oval rotary table and can rotate relative to the fixing rod, the oval rotary tables at two ends of the long shaft are connected with a locking device through a stay wire, the stay wire is pulled in and released through forward or reverse rotation of the oval rotary table, and therefore the locking and releasing of the junction box by the locking device are achieved. The invention can rapidly open and close the junction box without any tool, so that maintenance personnel can rapidly disassemble and connect the motor, and the daily maintenance work is convenient.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a quick locking device for a motor junction box.
Background
At present, the production rhythm of a steel mill is very fast, often because output is many and cancel the maintenance or shorten the repair time, also strive for the second to go on when salvageing at ordinary times, such condition to maintainer, pressure is very huge, especially when the roll table motor is inspected every time and is uncapped, because quantity is huge, consumes a large amount of time at every turn and twists the fixed screw on the junction box lid, seriously influences the maintenance progress.
Present motor terminal box is all fixed with four screws, some be outer hexagonal, some be interior hexagonal, some be cross, the instrument spanner that needs to use, interior hexagonal, the screwdriver, probably can't make unified specification because the operation requirement is different, our maintainer just needs to take the instrument of various types to the scene to carry out the dismouting, in addition because steam is heavy, the screw rusts, brush paint on irregular, lead to not twisting out smoothly through some auxiliary means, when touchhing large batch motor and need opening the inspection, need consume a large amount of time and uncap, seriously influence the maintenance progress and extravagant manpower.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel junction box quick locking device for a motor in the prior art, which can remove fixing screws on the periphery of the junction box and directly lock the junction box by using the quick locking device.
The technical scheme adopted by the invention for solving the problems is as follows: a quick locking device for a motor junction box comprises a cover shell covering a junction box base, wherein a locking device corresponding to a screw hole of the junction box is arranged at the bottom of the cover shell, and the locking device is fixed on the junction box under the action of the locking device; the wiring box is characterized in that an oval rotary table is horizontally arranged inside the housing, the oval rotary table is fixed inside the housing through a fixing rod, a manual rotary wheel is installed after the upper end of the fixing rod extends out of the housing, the manual rotary wheel is connected with the oval rotary table and can rotate relative to the fixing rod, the oval rotary tables at two ends of the long shaft are connected with a locking device through a stay wire, the stay wire is pulled in and released through forward or reverse rotation of the oval rotary table, and therefore the locking and releasing of the junction box by the locking device are achieved.
Preferably, the locking device comprises an insertion tube, a bottom plate, a pair of clamping jaws and a pull rod, the top end of the insertion tube is connected with the bottom of the housing in a sealing mode, the bottom plate is installed at the bottom end of the insertion tube in a sealing mode, the pull rod is inserted into the insertion tube, one end of the pull rod is connected with the pull wire, the other end of the pull rod penetrates out of the bottom plate, the pull rod penetrating through the bottom plate is respectively connected with the clamping jaws installed at the two ends of the bottom plate through a connecting rod, and the pull rod drives the connecting.
Preferably, the diameter of the insertion tube is slightly smaller than the screw hole of the junction box, so that the insertion tube can be inserted into the screw hole.
Preferably, the following components: the distance between the pair of clamping jaws after being unfolded is larger than the aperture of the screw hole of the junction box, so that the clamping jaws are tightly clamped with the junction box, and the locking device cannot be pulled out.
Preferably, the horizontal sliding rail has been seted up on the bottom plate, the jack catch comprises first movable rod and second movable rod, the one end of first movable rod and second movable rod is certain contained angle and links to each other, and this contained angle is fixed unchangeable, the other end of first movable rod is articulated with the tip of bottom plate, and the other end of second movable rod links to each other with the slider of installing in the horizontal sliding rail, the connecting rod links to each other with the second movable rod.
Preferably, the locking blocks on two sides of the center of the oval turntable are arranged on the upper surface inside the housing, a locking baffle matched with the locking blocks is arranged on the upper surface inside the housing, a compression spring is sleeved on a fixing rod below the oval turntable, and the locking is realized after the locking blocks cross the locking baffle in the rotating process of the oval turntable by pressing down the compression spring.
Preferably, the two ends of the long axis of the oval turntable are provided with ejector pins which are matched with the limiting baffle plates arranged on the inner surface of the housing, and the ejector pins and the limiting baffle plates can still touch after the compression spring is compressed to the minimum value, so that the rotation angle of the oval turntable is limited, and the pull wire is prevented from being pulled apart when the turntable rotates past the position.
Preferably, the insertion tube is made into a telescopic structure, and a return spring is provided inside the insertion tube.
Compared with the prior art, the invention has the advantages that:
the invention utilizes the original junction box and the cover, uses the quick locking device to replace the original fixing screw, and can replace the locking devices with different sizes according to the motor junction boxes with different sizes, thereby realizing the function of quickly opening and closing the junction box. The lock of the invention achieves the following effects:
1) the junction box can be opened and closed quickly without any tool, so that maintenance personnel can detach the wires from the motor quickly, and the daily maintenance work is facilitated.
2) The situation that the screw cannot be unscrewed due to rusting or painting is avoided.
3) The locking devices with different sizes can be made according to the motor junction boxes with different sizes, and the locking devices can be replaced, so that daily maintenance is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a motor junction box quick locking device of the present invention.
Fig. 2 is a schematic structural diagram of a locking device in an embodiment of the invention.
Fig. 3 is a schematic structural view of a claw portion of the locking device in the embodiment of the present invention.
Fig. 4 is a schematic view of a motor junction box quick locking device and a junction box in use.
Wherein:
housing 1
Locking device 2
Insertion tube 2.1
Base plate 2.2
Jack catchs 2.3
First movable bar 2.3.1
Second movable bar 2.3.2
Pull rod 2.4
Horizontal sliding rail 2.5
Connecting rod 2.6
Slide block 2.7
Fixing rod 4
Stay wire 6
Thimble 10
A return spring 12.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1-4, the present invention relates to a quick locking device for a motor junction box, which comprises a housing 1, wherein the housing 1 can be used as a cover of the junction box and covers a base of the junction box, four locking devices 2 are respectively arranged at the bottom of the housing 1, the locking devices 2 correspond to four screw holes on the junction box and can be inserted into the screw holes, and the locking device is fixed on the junction box through the action of the locking devices 2.
The improved portable elliptical rotating disc device is characterized in that an elliptical rotating disc 3 is horizontally arranged inside the housing 1, the center position of the elliptical rotating disc 3 is fixed at the center position inside the housing 1 through a fixing rod 4, a manual rotating wheel 5 is installed after the upper end of the fixing rod 4 extends out of the housing 1, the manual rotating wheel 5 is connected with the elliptical rotating disc 3, and the manual rotating wheel 5 can rotate relative to the fixing rod 4, so that the elliptical rotating disc 3 is driven to rotate. The oval rotary tables 3 at two ends of the long axis are respectively connected with four pull wires 6, the four pull wires 6 are respectively connected with four locking devices 2, and the four pull wires 6 are pulled in and loosened by rotating the oval rotary tables 3 in the forward direction or the reverse direction, so that the locking devices 2 lock and release the junction box.
The locking device 2 comprises an insertion tube 2.1, a bottom plate 2.2, a pair of clamping jaws 2.3 and a pull rod 2.4, the top end of the insertion tube 2.1 is hermetically connected with the bottom of the housing 1, the diameter of the insertion tube 2.1 is slightly smaller than the screw hole of the junction box, so that the insertion tube 2.1 can be just inserted into the screw hole, the bottom plate 2.2 is hermetically installed at the bottom end of the insertion tube 2.1, a horizontal sliding rail 2.5 is arranged on the bottom plate 2.2, the pull rod 2.4 is inserted into the insertion tube 2.1, one end of the pull rod 2.4 is connected with a pull wire 6, two sides of the other end of the pull rod 2.4 are symmetrically provided with connecting rods 2.6 after penetrating through the bottom plate 2.2, the connecting rods 2.6 are respectively connected with the clamping jaws 2.3 installed at the two ends of the bottom plate 2.2.2, the clamping jaws 2.3 are composed of a first movable rod 2.3.1 and a second movable rod 2.3.2, one ends of the first movable rod 2.3.1 and the second movable rod 2.2 are connected with a certain included angle, the other end of, the other end of the second movable rod 2.3.2 is connected with a slide block 2.7 arranged in the horizontal slide rail 2.5, and the connecting rod 2.6 is connected with the second movable rod 2.3.2.
When the long shaft end of the elliptical disc in the housing is positioned above the locking device, the pull wire is in a free state, two clamping jaws are in a contraction state at the moment, namely the distance between the clamping jaws is smaller than the diameter of the screw hole, so that the locking device can be inserted into the screw hole, after the clamping jaws of the locking device penetrate through the screw hole, the manual rotating wheel is rotated, the elliptical disc rotates, the pull wire rotates, the pull rod moves upwards along the insertion pipe, the included angle between the pull rod and the connecting rods at the two sides is enlarged, the pull rod pushes the second movable rod of the clamping jaws to be outwards unfolded, the sliding block on the second movable rod moves outwards along the sliding rail of the bottom plate, and as the included angle between the first movable rod 2.3.1 and the second movable rod 2.3.2 is fixed, the first movable rod 2.3.1 is outwards unfolded and is clamped with the end face of the junction box at the bottom of; when the locking device needs to be detached, the manual rotating wheel is rotated in the direction, so that the pull wire is restored to the initial free state, the pull rod moves downwards due to gravity, the included angle between the pull rod and the connecting rods on the two sides is reduced, the connecting rods pull the clamping jaws to contract inwards, the sliding blocks on the second movable rods move inwards along the sliding rails at the moment, the clamping jaws contract, and the locking device can be pulled out from the screw hole of the junction box.
In order to prevent the locking failure caused by the fact that the oval turntable is rotated to the initial state under the action of the gravity of the pull rod after the locking device and the junction box are locked, a locking mechanism needs to be added, the locking mechanism comprises locking blocks 7 arranged on two sides of the center of the oval turntable 2 and a locking baffle 8 arranged on the upper surface inside the housing 1, a compression spring 9 is sleeved on a fixing rod 4 below the oval turntable 2, the oval turntable 2 cannot rotate after rotating a certain angle due to the fact that the locking blocks 7 touch the locking baffle 8, the manual rotating wheel is pressed downwards to enable the oval turntable 2 to act on the compression spring, the locking blocks 7 descend along with the oval turntable, the downward pressure is released after the locking baffle 8 is crossed, the oval turntable cannot rotate due to the action of the locking blocks 7 and the locking baffle 8, and the locking of the locking device. When the locking device needs to be opened and the locking device needs to rotate, the manual rotating wheel only needs to be pressed down, and the locking block is enabled to cross the locking baffle 8 and then releases pressure to rotate.
In this embodiment, the pull wire 6 is made of a hard steel wire with good toughness, but in order to prevent the oval turntable from rotating over the end, a limiting mechanism is arranged inside the housing, and includes thimbles 10 installed at two ends of the major axis of the oval turntable 2 and limiting baffles 11 arranged on the inner surface of the housing 1, the thimbles 10 and the limiting baffles 11 are matched to limit the rotation angle of the oval turntable 2, so as to prevent the turntable from rotating over the position to pull the pull wire apart.
Meanwhile, in order to adapt to the lengths of the screw holes of the junction boxes with different sizes, the insertion tube 2.1 is made into a telescopic structure, and a return spring 12 is arranged in the insertion tube 2.1.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a quick locker of motor terminal box which characterized in that: the locking device is characterized by comprising a cover covering a junction box base, wherein the bottom of the cover is provided with a locking device corresponding to a screw hole of the junction box, and the locking device is fixed on the junction box under the action of the locking device; the wiring box is characterized in that an oval rotary table is horizontally arranged inside the housing, the oval rotary table is fixed inside the housing through a fixing rod, a manual rotary wheel is installed after the upper end of the fixing rod extends out of the housing, the manual rotary wheel is connected with the oval rotary table and can rotate relative to the fixing rod, the oval rotary tables at two ends of the long shaft are connected with a locking device through a stay wire, the stay wire is pulled in and released through forward or reverse rotation of the oval rotary table, and therefore the locking and releasing of the junction box by the locking device are achieved.
2. The motor junction box quick locking device of claim 1, wherein: the locking device comprises an insertion pipe, a bottom plate, a pair of clamping jaws and a pull rod, the top end of the insertion pipe is connected with the bottom of the housing in a sealing mode, the bottom plate is installed at the bottom end of the insertion pipe in a sealing mode, the pull rod is inserted into the insertion pipe, one end of the pull rod is connected with the pull wire, the other end of the pull rod penetrates out of the bottom plate, the pull rod penetrating through the bottom plate is connected with the clamping jaws installed at the two ends of the bottom plate through connecting rods respectively, and the pull rod drives the connecting.
3. The motor junction box quick locking device of claim 2, wherein: the diameter of the insertion tube is slightly smaller than that of the screw hole of the junction box, so that the insertion tube can be just inserted into the screw hole.
4. The motor junction box quick locking device of claim 2, wherein: the distance between the pair of clamping jaws after being unfolded is larger than the aperture of the screw hole of the junction box, so that the clamping jaws are tightly clamped with the junction box, and the locking device cannot be pulled out.
5. The motor junction box quick locking device of claim 1, wherein: the horizontal direction slide rail has been seted up on the bottom plate, the jack catch comprises first movable rod and second movable rod, the one end of first movable rod and second movable rod is certain contained angle and links to each other, and this contained angle is fixed unchangeable, the other end of first movable rod is articulated with the tip of bottom plate, and the other end of second movable rod links to each other with the slider of installing in the horizontal direction slide rail, the connecting rod links to each other with the second movable rod.
6. The motor junction box quick locking device of claim 1, wherein: the locking blocks on two sides of the center of the oval turntable are arranged on the upper surface inside the housing, a locking baffle matched with the locking blocks is arranged on the upper surface inside the housing, a compression spring is sleeved on a fixed rod below the oval turntable, and the oval turntable is locked after the locking blocks cross the locking baffle in the rotating process by pressing down the compression spring.
7. The motor junction box quick locking device of claim 6, wherein: ejector pins are arranged at two ends of the long axis of the oval turntable and matched with a limiting baffle arranged on the inner surface of the housing, and the ejector pins and the limiting baffle can still touch after a compression spring is compressed to the minimum value so as to limit the rotation angle of the oval turntable and prevent the pull wire from being pulled apart when the turntable rotates past the position.
8. The motor junction box quick locking device of claim 1, wherein: the insertion tube is made into a telescopic structure, and a return spring is provided inside the insertion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010393006.5A CN111697747A (en) | 2020-05-11 | 2020-05-11 | Quick locking device for motor junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010393006.5A CN111697747A (en) | 2020-05-11 | 2020-05-11 | Quick locking device for motor junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111697747A true CN111697747A (en) | 2020-09-22 |
Family
ID=72477154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010393006.5A Pending CN111697747A (en) | 2020-05-11 | 2020-05-11 | Quick locking device for motor junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111697747A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541034A (en) * | 2021-07-22 | 2021-10-22 | 中建中新建设工程有限公司 | Device for adjusting levelness of junction box in secondary piping |
-
2020
- 2020-05-11 CN CN202010393006.5A patent/CN111697747A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541034A (en) * | 2021-07-22 | 2021-10-22 | 中建中新建设工程有限公司 | Device for adjusting levelness of junction box in secondary piping |
| CN113541034B (en) * | 2021-07-22 | 2022-09-09 | 中建中新建设工程有限公司 | Device for adjusting levelness of junction box in secondary piping |
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