Current transformer convenient to mount and dismount

Abstract

The utility model discloses a current transformer convenient to mount and dismount, which relates to the technical field of current transformers and comprises a current transformer body, and a mounting bottom plate is integrally welded at the bottom of the current transformer body. The current transformer mounting structure comprises a mounting bottom plate and further comprises four groups of mounting grooves distributed at the corners of the mounting bottom plate in a rectangular array mode, a connecting piece is arranged in each group of mounting grooves, a rotating piece is arranged on the outer side of each connecting piece, a cavity is further formed in the mounting bottom plate, and transmission pieces are connected to the outer sides of the four groups of rotating pieces in a transmission mode. The base of the current transformer can be quickly disassembled, and screws or bolts do not need to be disassembled for multiple times by using tools during use, so that the workload of replacing and maintaining the current transformer is reduced; meanwhile, the current transformer is installed in a four-point positioning mode, the stability of installation and positioning between the current sensor and the power distribution cabinet is improved, and the efficiency of the adopted installation mode is four times that of an existing screw connection mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to current transformer technical field, concretely is a current transformer convenient to install and dismount. BACKGROUND

[0002] The current transformer is mainly composed of a closed core and winding, and is an instrument for converting a primary side large current into a secondary side small current for measurement according to the electromagnetic induction principle, so as to meet the needs of measuring instruments, relay protection, circuit breaker failure judgment and fault filtering devices, and the current transformer is generally arranged in a circuit of a generator, a transformer, an outgoing line, a busbar circuit breaker and a bypass circuit breaker.

[0003] At present, the base of the existing current transformer is mainly connected with the inner wall of the power distribution cabinet in a bolt connection mode, that is, 2-4 bolts or screws are used to be fixed in the power distribution cabinet, and the current transformer is fixed in this way. On the one hand, the operation space for installing the current transformer is small, and the user will increase the complexity of operation when using tools to screw the screws at 2-4 positions, on the other hand, when the existing current transformer fails or is damaged, tools are also needed to screw the screws at 2-4 positions to disassemble the whole and replace it, which also increases the labor intensity in the maintenance process. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a current transformer convenient to install and dismount to solve the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a current transformer convenient to install and dismount, comprising a current transformer body, an installation bottom plate is integrally welded at the bottom of the current transformer body; further comprising: four groups of installation grooves are distributed at the corner of the installation bottom plate in a rectangular array, a connecting piece is arranged in each group of installation grooves, a rotating piece is arranged on the outer side of the connecting piece, a cavity is further arranged in the installation bottom plate, a transmission piece is transmissionally connected to the outer side of the rotating piece of each group, and a screwing piece is fixedly connected to the top of the rotating piece of one group.

[0006] Preferably, the connecting piece comprises a threaded stud capable of being threadedly connected with a power distribution cabinet for installing the current transformer body, one end of the threaded stud penetrates through the bottom of the installation bottom plate and extends into the installation groove and is fixedly connected with a driving plate, and the designed connecting piece facilitates the connection of the installation bottom plate and the power distribution cabinet.

[0007] Preferably, the rotating part comprises a sleeve sleeved outside the driving plate, a plurality of first connecting rods are fixed at one end of the sleeve close to the bottom of the mounting groove, a limiting sleeve is fixed at one end of the first connecting rod, a rotating bearing is sleeved on the outer side of the limiting sleeve, the outer ring of the rotating bearing is fixed on the bottom of the mounting groove, and the output end of the transmission part is fixedly connected with the sleeve.

[0008] Preferably, the transmission part comprises a transmission gear fixedly sleeved on the outer side of the sleeve, the transmission gear and the sleeve are equal in number and are each provided with four groups, the four groups of transmission gears are in meshing transmission with an internal tooth belt, and the screwing part is fixed to the top of one group of the transmission gears.

[0009] Preferably, the screwing part comprises a second connecting rod fixedly connected to the top of one group of the transmission gears, and a screwing block is fixed to the top end of the second connecting rod.

[0010] Preferably, the edge of the screwing block is provided with a round corner, and a groove is formed in the top of the screwing block, and the cross section of the groove is in the shape of plum blossom, so that the screwing block is convenient for the user to operate.

[0011] Preferably, the inner side of the sleeve is provided with a key groove, and the outer side of the driving plate is uniformly provided with a protruding block which is adapted to the key groove, so that the screw is only allowed to move and rotate in the vertical direction.

[0012] Preferably, the number of the second connecting rods is four, and the four groups of second connecting rods are arranged in a ring array at the bottom of the screwing block, so that the four groups of second connecting rods are convenient for connecting the screwing block and the transmission gear.

[0013] Preferably, the bottom of the mounting bottom plate is fixedly provided with a gasket, and the gasket is sleeved outside the screw, so that the gasket can fill the small gap between the mounting bottom plate and the mounting position, and ensure the close connection.

[0014] Preferably, the screw is composed of an outer threaded groove and a light rod, and the length of the outer threaded groove is smaller than the internal depth of the sleeve, so that the driving plate is prevented from being separated from the sleeve.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a connecting piece, rotating piece and transmission piece's mutual cooperation is designed, when assembling, disassembling and maintaining current transformer, can be fast disassembled to the base of current transformer, does not need to use the tool multiple times to disassemble screw or bolt in use, reduced the workload of replacing and maintaining current transformer, installs the current transformer simultaneously with four point positioning mode, improved the stability of installation positioning between current sensor and switch board, compared with the screw of existing one by one twist, the installation mode of adoption efficiency is four times of the screw connection mode of existing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the local structure schematic diagram of the utility model;

[0019] Figure 3 It is the connecting piece, rotating piece and twist piece structure schematic diagram of the utility model;

[0020] Figure 4 It is the transmission piece structure schematic diagram of the utility model;

[0021] Figure 5 It is the sleeve and drive plate structure schematic diagram of the utility model;

[0022] Figure 6 It is the installation bottom plate structure schematic diagram of the utility model.

[0023] In the drawing: 1-current transformer body;2-installation bottom plate;3-installation groove;4-connecting piece;5-rotating piece;6-transmission piece;7-twist piece;8-stud;9-drive plate;10-sleeve;11-first connecting rod;12-limiting sleeve;13-rotary bearing;14-transmission gear;15-inner tooth belt;16-second connecting rod;17-twist block;18-groove;19-keyway;20-protruding block;21-gasket. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] Embodiment 1: as Figure 1 And Figure 2As shown in the figure, one of the illustrated current transformers convenient to install and disassemble, including the current transformer body 1, the bottom of the current transformer body 1 is integrally welded with the installation bottom plate 2; further comprising: four groups of rectangular array distribution in the installation bottom plate 2 corner installation slot 3, each group of installation slot 3 is provided with connecting piece 4, the outer side of connecting piece 4 is provided with rotating piece 5, the inside of installation bottom plate 2 is also provided with cavity, the outer side of four groups of rotating piece 5 is drivingly connected with transmission member 6, one of the rotating piece 5 top fixedly connected with the screwing member 7.

[0026] In the scheme, through the cooperation of the designed connecting piece 4, rotating piece 5 and transmission member 6, the base of the current transformer can be quickly disassembled when assembling, disassembling and maintaining the current transformer, without using tools to disassemble and assemble screws or bolts multiple times during use, reducing the workload of replacing and maintaining the current transformer; at the same time, the current transformer is installed by four-point positioning, which improves the stability of the installation and positioning between the current sensor and the power distribution cabinet, and the efficiency of the installation method is four times that of the existing screw connection method.

[0027] Among them, as shown in the figure, Figure 3 In order to facilitate the connection of the installation bottom plate 2 and the power distribution cabinet, the connecting piece 4 includes a threaded stud 8 which can be threadedly connected with the power distribution cabinet for installing the current transformer body 1, one end of the threaded stud 8 penetrates through the bottom of the installation bottom plate 2 and extends into the installation slot 3 and is fixedly connected with a driving plate 9.

[0028] In addition, as shown in the figure, Figure 3 And Figure 5 In order to facilitate the rotation and movement of the threaded stud 8, the rotating piece 5 includes a sleeve 10 which is sleeved outside the driving plate 9, the end of the sleeve 10 close to the slot bottom of the installation slot 3 is fixed with a plurality of first connecting rods 11, one end of the first connecting rod 11 is fixed with a limiting sleeve 12, the outer side of the limiting sleeve 12 is fixedly sleeved with a rotating bearing 13, the outer ring of the rotating bearing 13 is fixed on the bottom of the installation slot 3, the output end of the transmission member 6 is fixedly connected with the sleeve 10, the inner side of the sleeve 10 is provided with a key groove 19, the outer side of the driving plate 9 is uniformly fixed with a protruding block 20 which can be matched with the key groove 19, so that the threaded stud 8 can only move and rotate in the vertical direction.

[0029] At the same time, as shown in the figure, Figure 4 In order to facilitate the synchronous rotation of the four sleeves 10, the transmission member 6 includes a transmission gear 14 which is fixedly sleeved outside the sleeve 10, the transmission gear 14 and the sleeve 10 are equal in number and are provided with four groups, and the four groups of transmission gears 14 are in meshing transmission with an inner tooth belt 15, and the top of one of the transmission gears 14 is fixedly connected with the screwing member 7.

[0030] In addition, as shown in the figure, Figure 5As shown, in order to prevent the driving plate 9 from being separated from the sleeve 10, the stud 8 is composed of two parts with an external threaded groove and a light rod, and the length of the part with the external threaded groove is smaller than the internal depth of the sleeve 10.

[0031] Specific use method: when installing the current transformer body 1, first, the bottom end of the four groups of studs 8 is opposite to the preset threaded hole on the power distribution cabinet, then the rotating knob 7 is rotated, the rotating knob 7 drives one of the transmission gears 14 to rotate, the transmission gear 14 drives the internal toothed belt 15 with a tooth groove to move, and the internal toothed belt 15 drives the transmission gears 14 at other three positions to rotate synchronously, so that the four transmission gears 14 at four positions rotate simultaneously, and the four sleeves 10 are driven by the four transmission gears 14 to rotate, since the driving plate 9 at one end of the stud 8 is slidably sleeved with the sleeve 10, the transmission gear 14 drives the driving plate 9 to move and rotate when rotating, the stud 8 is screwed into the threaded hole, so that the four studs 8 at four positions are screwed into the preset threaded hole at the same time, until the stud 8 is completely screwed into the threaded hole, at this time, the installation bottom plate 2 is completely fixed in the power distribution cabinet.

[0032] Embodiment 2: as shown in Figure 3 The embodiment further illustrates embodiment 1, the rotating knob 7 in the figure includes a second connecting rod 16 fixedly connected with the top of one of the transmission gears 14, the top end of the second connecting rod 16 is fixedly connected with a rotating block 17, the edge of the rotating block 17 is provided with a round corner, and a recess 18 is formed in the top of the rotating block 17, and the cross-sectional shape of the recess 18 is plum blossom shape.

[0033] It should be noted that in the specific operation, the user can insert the port of the screwdriver into the plum blossom-shaped recess 18 on the rotating block 17, then manually rotate the screwdriver, the screwdriver drives the rotating block 17 to rotate, the rotating block 17 drives one of the transmission gears 14 to rotate through the second connecting rod 16, and finally the other transmission gears 14 are driven to rotate through the internal toothed belt 15, realizing the effect that single rotation leads to the rotation of others, greatly improving the efficiency of installation and disassembly.

[0034] In addition, as shown in Figure 3 In order to facilitate the connection between the rotating block 17 and the transmission gear 14, the number of the second connecting rods 16 is four, and the four second connecting rods 16 are arranged in a ring array at the bottom of the rotating block 17, and the four second connecting rods 16 are used to connect with the transmission gear 14, so that the rotating torque of the rotating block 17 can be better transmitted to the transmission gear 14.

[0035] Embodiment 3: as shown in Figure 2 and Figure 6As shown, the embodiment further illustrates example 1, the bottom of the current transformer body 1 is integrally welded with the mounting bottom plate 2; further comprising: four groups of mounting grooves 3 distributed in a rectangular array at the corners of the mounting bottom plate 2, a connecting piece 4 is arranged in each group of mounting grooves 3, a rotating piece 5 is arranged on the outer side of the connecting piece 4, a cavity is further arranged in the mounting bottom plate 2, a transmission piece 6 is transmissionally connected to the outer side of the four groups of rotating pieces 5, the top of one group of rotating pieces 5 is fixedly connected with a screwing piece 7, the bottom of the mounting bottom plate 2 is fixedly connected with a gasket 21, the gasket 21 is sleeved on the outer side of the stud 8, by adding the gasket 21 between the mounting bottom plate 2 and the mounting contact surface, the small gap between the mounting bottom plate 2 and the mounting position can be filled, and the tight connection between the two can be ensured without shaking.

[0036] It should be noted that in the present scheme, the standard parts used can be directly purchased from the market, and the non-standard structural parts according to the description and drawings can also be processed without doubt according to existing technical knowledge, and the connection mode of each part adopts the mature conventional means in the existing technology, and the machinery, parts and equipment adopt the conventional models in the existing technology, so specific description is not made here.

[0037] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0038] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A current transformer convenient to install and dismount, comprising: a current transformer body (1), the bottom of the current transformer body (1) is integrally welded with a mounting bottom plate (2); characterized in that it further comprises: four groups of mounting grooves (3) distributed in a rectangular array at the corners of the mounting bottom plate (2), each group of the mounting grooves (3) is provided with a connecting piece (4), the outer side of the connecting piece (4) is provided with a rotating piece (5), the inside of the mounting bottom plate (2) is further provided with a cavity, the outer side of four groups of the rotating piece (5) is drivingly connected with a transmission piece (6), and the top of one group of the rotating piece (5) is fixedly connected with a screwing piece (7).

2. The current transformer according to claim 1, characterized in that: The connecting piece (4) comprises a stud (8) which can be threadedly connected with a power distribution cabinet for mounting the current transformer body (1), one end of the stud (8) penetrates through the bottom of the mounting bottom plate (2) and extends into the mounting groove (3) and is fixedly connected with a driving plate (9).

3. The current transformer according to claim 2, characterized in that: The rotating piece (5) comprises a sleeve (10) sleeved outside the driving plate (9), a plurality of first connecting rods (11) are fixed to one end of the sleeve (10) close to the groove bottom of the mounting groove (3), one end of the first connecting rod (11) is fixedly connected with a limiting sleeve (12), the outer side of the limiting sleeve (12) is fixedly sleeved with a rotating bearing (13), the outer ring of the rotating bearing (13) is fixed to the bottom of the mounting groove (3), and the output end of the transmission piece (6) is fixedly connected with the sleeve (10).

4. The current transformer according to claim 3, characterized in that: The transmission piece (6) comprises a transmission gear (14) fixedly sleeved outside the sleeve (10), the transmission gear (14) and the sleeve (10) are equal in number and are each provided with four groups, and four groups of the transmission gear (14) are in meshing transmission with an internal tooth belt (15), and the top of the screwing piece (7) is fixedly connected with one group of the transmission gear (14).

5. The current transformer according to claim 4, characterized in that: The screwing piece (7) comprises a second connecting rod (16) fixedly connected with the top of one group of the transmission gear (14), and a screwing block (17) is fixed to the top end of the second connecting rod (16).

6. The current transformer according to claim 5, characterized in that: The edge of the screwing block (17) is provided with a round corner, and a recess (18) is formed in the top of the screwing block (17), and the cross-sectional shape of the recess (18) is plum blossom-shaped.

7. The current transformer according to claim 3, characterized in that: The inner side of the sleeve (10) is provided with a key groove (19), and the outer side of the driving plate (9) is uniformly fixed with a protruding block (20) which can be matched with the key groove (19).

8. The current transformer according to claim 5, wherein: The number of the second connecting rod (16) is four groups, and four groups of the second connecting rod (16) are distributed in a ring array at the bottom of the screwing block (17).

9. The current transformer according to claim 2, characterized in that: The bottom of the mounting bottom plate (2) is fixedly connected with a gasket (21), and the gasket (21) is sleeved outside the stud (8).

10. The current transformer according to claim 3, wherein: The stud (8) is composed of an outer thread groove and a light rod, and the length of the outer thread groove is smaller than the internal depth of the sleeve (10).

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