CN217362775U - Frequency conversion all-in-one machine and frequency converter thereof - Google Patents

Abstract

The utility model relates to a frequency conversion all-in-one and converter thereof, the converter includes: the terminal comprises a shell, a connecting piece and a connecting piece, wherein one end of the shell is a rectangular wiring end which is provided with two wiring positions, and the two wiring positions are arranged corresponding to two ends of the long edge of the rectangular wiring end one by one; two wiring units arranged in parallel are arranged in one-to-one correspondence with the two wiring positions, and each wiring unit is provided with a power supply wiring piece and a communication wiring piece respectively; and the junction box is used for externally connecting a power supply cable and a communication cable, and can be selectively and detachably arranged at any one of the two wiring positions so as to be connected with the power supply wiring piece and the communication wiring piece of the wiring unit arranged corresponding to the wiring position. According to specific installation requirements, the junction box can be selected to be installed at one wiring position, the junction box is guaranteed to be always located at a high position, and the risk of wire inlet explosion when underground water submerges the junction box can be effectively reduced.

Description

Frequency conversion all-in-one machine and frequency converter thereof

Technical Field

The utility model relates to a motor technical field generally. More specifically, the utility model relates to a frequency conversion all-in-one and converter thereof.

Background

The coal can be conveyed by a scraper conveyor during coal mining. The scraper conveyor utilizes the scraper chain to carry the material to move along the chute so as to convey the material to the machine head for unloading. The machine head power device is usually arranged at the machine head of the scraper conveyor, the machine tail power device is also arranged at the machine tail, the middle power device is arranged in the middle of the scraper conveyor, and the machine head power device, the machine tail power device and the middle power device usually adopt motor power devices so as to provide driving force for the scraper conveyor chain. Moreover, in order to improve the driving force, corresponding motor power devices can be arranged at the head position, the tail position and the middle position at the same time.

At present, a motor power device on a scraper conveyor mostly adopts a frequency conversion all-in-one machine, wherein a frequency converter is directly and integrally installed on a shell of a motor, and the rotating speed and the power of the motor are controlled by the frequency converter. When carrying out the underground assembly, the integrative motor of frequency conversion can be hoisted and put into in order to be connected with corresponding scraper chain roller transmission in the pit. The frequency converter is provided with a shell, and a functional module is arranged in the shell to control the operation of the adjusting motor. Set up power supply joint and communication joint on the casing of converter, power supply joint is used for connecting the power supply cable, and communication joint is used for connecting the communication cable to satisfy the normal wiring requirement of converter.

The frequency conversion all-in-one that commonly uses only is used for the aircraft nose position or is the tail position usually, for improving the commonality of frequency conversion all-in-one, considers through upset frequency conversion all-in-one so that it can be applied to the aircraft nose position, can be applied to the tail position again. At the moment, the frequency conversion all-in-one machine is normally installed at the machine head position according to the first installation posture, the frequency conversion all-in-one machine in the first installation posture is turned over for 180 degrees to obtain a second installation posture, and the frequency conversion all-in-one machine can be normally installed at the machine tail position according to the second installation posture. The mode that this kind of through the upset so that a kind of frequency conversion all-in-one can general installation in aircraft nose position and tail position is used comparatively conveniently, because the probability that the power device of the aircraft nose position of scraper conveyor and the power device of tail position damaged simultaneously is less, when a frequency conversion all-in-one can be general in aircraft nose position and tail position, adopt in the actual production process one stand-by machine can, can effectively reduce cost.

In the practical application process, the all-in-one machine which can be applied to different positions through overturning puts higher requirements on the frequency converter. Considering safety factors, the frequency converters on the integrated machine at the head position and the tail position need to be arranged beside the set level of the motor, and when the integrated machine is specifically installed on the scraper conveyor, the junction box of the frequency converter needs to be positioned at a high position so as to avoid accidental water inflow accidents caused by flooding the junction box by underground water. The terminal box on the existing all-in-one machine is fixed at a mounting position of the frequency converter, if the terminal box is arranged above the terminal box in a mounting posture, the terminal box is arranged below the terminal box when the all-in-one machine is overturned by 180 degrees, and the risk of accidental water inflow exists, so that the frequency converter cannot be suitable for the frequency conversion all-in-one machine which can be overturned and applied to different stations, and therefore the novel frequency converter is urgently needed to be designed and manufactured.

SUMMERY OF THE UTILITY MODEL

The utility model provides a frequency converter of a frequency conversion all-in-one machine, which solves the technical problem that a junction box can only be fixed at one installation position of the frequency converter in the prior art, so that the junction box can not be applicable to the frequency conversion all-in-one machine which can be overturned and applied to different stations; and simultaneously, the utility model also provides a frequency conversion all-in-one of using above-mentioned converter.

In order to solve the above problem, the first aspect of the present invention provides the following technical solutions: a frequency converter of a frequency conversion all-in-one machine comprises: the shell is provided with a front direction and a rear direction which are consistent with the front and rear axial directions of the motor of the frequency conversion all-in-one machine, one end of the shell in the front and rear direction is a rectangular wiring end, the rectangular wiring end is provided with two wiring positions, and the two wiring positions are arranged in a one-to-one correspondence manner with the two ends of the long edge of the rectangular wiring end; the two wiring units are arranged in parallel, are positioned in the shell and are arranged in one-to-one correspondence with the two wiring positions, and each wiring unit is provided with a power supply wiring piece and a communication wiring piece respectively; and the junction box is used for externally connecting a power supply cable and a communication cable, and can be selectively and detachably arranged at any one of the two wiring positions so as to be connected with the power supply wiring piece and the communication wiring piece of the wiring unit arranged corresponding to the wiring position.

As a further improvement, the junction box has a main box body having a first box wall and a second box wall spaced apart in a front-rear direction, and an intermediate box wall located between the first box wall and the second box wall, the intermediate box wall being provided with a power supply connector for externally connecting the power supply cable and a communication connector for externally connecting the communication cable, the first box wall being adapted to be detachably and fixedly mounted at one of the two wiring positions so that the junction box is mounted on the rectangular terminal in a first fixed posture, the second box wall being adapted to be detachably and fixedly mounted at the other of the two wiring positions so that the junction box is mounted on the rectangular terminal in a second fixed posture, a plugging direction of the electrical connectors on the junction box in the first fixed posture and the second fixed posture being arranged horizontally, the power supply cable is used for horizontal connection, the first box wall and the second box wall are respectively provided with a wire passing hole, the wire passing hole is used for allowing an internal power supply cable and an internal communication cable to pass through, the internal power supply cable is used for connecting the electric connector and the power supply wiring piece of the wiring unit at the corresponding wiring position, and the internal communication cable is used for connecting the communication connector and the communication wiring piece of the wiring unit at the corresponding wiring position.

As a further improvement, the first box wall and the second box wall are respectively provided with a first mounting hole for mounting a fastening screw, the first box wall and the second box wall are respectively provided with a second mounting hole for mounting a fixing screw, the center lines of the first mounting hole and the second mounting hole extend along the front-back direction, the first mounting hole and the second mounting hole are respectively located at the outer side of the wire passing hole of the corresponding box wall and distributed in a plurality around the corresponding wire passing hole, in the first box wall and the second box wall, the fastening screw is mounted in the first mounting hole of one box wall so as to detachably fix the junction box on the rectangular terminal, and the fixing screw is mounted in the second mounting hole of the other box wall so as to detachably mount a wire passing hole baffle at the wire passing hole on the box wall.

As a further improvement, the plurality of first mounting holes on the first box wall and/or the second box wall are arranged in a circle or a regular even polygon.

As a further improvement, the casing is explosion-proof casing, be equipped with the division board in the main box body, this division board will the inner chamber of main box body is separated for power supply explosion-proof chamber and communication intrinsic safety chamber, on first box wall and the second box wall cross the line hole all with power supply explosion-proof chamber intercommunication, so that power supply explosion-proof chamber with the inner chamber intercommunication of explosion-proof casing, the electric connector corresponds power supply explosion-proof chamber arranges, inside power supply cable arrange in the power supply explosion-proof chamber, communication connector corresponds communication intrinsic safety chamber sets up, the inside communication cable passes in proper order communication intrinsic safety chamber the division board reaches power supply explosion-proof chamber arranges.

As a further improvement, the internal communication cable comprises a first cable segment located in the communication intrinsic safety cavity, a second cable segment located in the power supply explosion-proof cavity, and an intermediate connector fixedly sealed on the partition plate, wherein one end of the first cable segment is connected with the communication connector, the other end of the first cable segment is connected with the intermediate connector, one end of the second cable segment is connected with the intermediate connector, and the other end of the second cable segment is used for being connected with the communication wiring piece of the wiring unit at the corresponding wiring position.

As a further improvement, the main box body is of a cuboid structure, the middle box wall of the main box body is provided with a plane installation box wall between the first box wall and the second box wall, the plane installation box wall is fixedly provided with the electric connector and the communication connector, and the plugging direction of the electric connector is parallel to the plugging direction of the communication connector.

As a further improvement, the two wiring units have the same structure.

The utility model discloses the technical scheme that the second aspect provided: a frequency conversion all-in-one machine comprises any one of the above-mentioned frequency converter schemes and further comprises a motor, the axial direction of the motor extends along the front-back direction, the motor is provided with a machine shell and a motor shaft extending along the front-back direction, and a shell of the frequency converter is fixedly arranged outside the machine shell along the radial direction of the motor shaft.

As a further improvement, the motor is a permanent magnet motor, a speed reducer is integrally mounted at the front end of the permanent magnet motor, the speed reducer is provided with an input shaft in coaxial transmission connection with the motor shaft, the speed reducer is further provided with an output shaft extending forwards, a rectangular flange mounting plate for fixedly mounting the frequency conversion all-in-one machine on a corresponding support is arranged at the front end of the speed reducer, the long edge of a rectangular wiring end of the frequency converter is arranged in parallel with one side edge of the rectangular flange mounting plate, and the rectangular wiring end of the frequency converter is located at the front end of the frequency converter.

The beneficial effects are that: the utility model provides an among the frequency conversion all-in-one, the rectangle wiring end of the casing of converter arranges two wiring positions and two parallelly connected power supply wiring units of arranging, according to concrete installation requirement, but the alternative of terminal box is installed in a wiring position department, guarantees that the terminal box is in the eminence all the time, can effectively reduce the risk that the inlet wire explodes the machine when the underground water floods the terminal box. The junction box is provided with the electric connector and the communication connector, so that the power supply requirement and the communication requirement of the frequency converter can be reliably met, and the normal work of the frequency conversion all-in-one machine is ensured.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are illustrated by way of example and not by way of limitation, and like reference numerals designate like or corresponding parts, in which:

fig. 1 is a schematic structural diagram of an embodiment of the variable frequency all-in-one machine provided by the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a left side view of FIG. 2 (with two wiring units exposed);

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a front view of the junction box of FIG. 1;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 5;

FIG. 7 is a schematic structural view of the main housing of the junction box of FIG. 5;

FIG. 8 is a schematic structural diagram of a second installation attitude of the variable frequency all-in-one machine shown in FIG. 1;

FIG. 9 is a schematic structural diagram of a third installation attitude of the variable frequency all-in-one machine shown in FIG. 1.

Description of reference numerals:

1. mounting a flange; 2. a speed reducer; 3. a permanent magnet motor; 4. a mounting seat; 5. a junction box; 51. A first cassette wall; 52. a second cassette wall; 53. a wire passing hole baffle; 54. positioning a sealing plate; 55. perforating; 56. an intermediate connector; 57. a communication intrinsic safety cavity; 58. a partition plate; 59. a power supply explosion-proof cavity; 6. An electrical connector; 60. an upper assembly hole; 7. a frequency converter; 71. a first wire connection position; 72. a second wire connection position; 8. a rectangular terminal; 9. sealing a baffle plate; 10. a wiring unit; 101. a power supply wiring member; 102. A communication wiring piece; 11. a wire passing hole; 12. a first mounting hole; 13. a second mounting hole; 14. a lower assembly hole; 15. and installing the box wall in a plane.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it should be understood by those skilled in the art that the embodiments described below are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

The terminal box on the existing frequency converter can only be fixed at one installation position, and when the frequency conversion all-in-one machine is overturned to be applied to different stations, for example, when the frequency conversion all-in-one machine is overturned from a first installation posture by 180 degrees to a second installation posture, if the terminal box on the frequency conversion all-in-one machine in the first installation posture is in a safer upper position, when the frequency converter is overturned from the frequency conversion all-in-one machine by 180 degrees to the second installation posture along with the frequency conversion all-in-one machine, the terminal box on the frequency converter can be in a lower position. When the frequency conversion all-in-one machine is applied to an underground dangerous environment, the junction box below is easily submerged by water to cause the lifting of the danger coefficient.

The needle is to above-mentioned problem, the utility model provides a two wiring positions of rectangle wiring end interval arrangement of converter conveniently selects one of them wiring position installation terminal box according to actual conditions needs. Corresponding to the actual requirement that the frequency conversion all-in-one machine can be overturned from the first installation posture by 180 degrees to the second installation posture, when the frequency conversion all-in-one machine is in the first installation posture, the long sides of the rectangular wiring ends of the frequency converter are vertically arranged, one of the two wiring positions of the rectangular wiring ends is located above, the other one of the two wiring positions is located below, the wiring position located above is correspondingly selected to install the wiring box, and the wiring box is guaranteed to be located at a safe position. When the frequency converter is in the second installation posture, the frequency converter is also turned over by 180 degrees along with the frequency conversion all-in-one machine, the positions of two terminals of the rectangular terminal are simultaneously turned upside down, the junction box is installed at the wiring position above, and the junction box can be ensured to be in a safe position. The two wire connecting positions arranged at intervals can enable the frequency converter to adapt to the practical application working condition of the frequency conversion all-in-one machine with the turnover requirement. And corresponding to the two wiring positions, two wiring units are arranged in parallel inside the shell of the frequency converter, and when the wiring box is mounted at one wiring position at any option, the wiring box can supply power to the frequency converter through the corresponding wiring units, so that the normal work of the frequency converter is ensured. Because the junction box is provided with the electric connector and the communication connector, the junction box can be used for directly realizing power supply connection and communication connection between the frequency converter and the outside, and the normal work of the frequency converter can be ensured.

Having described the basic principles of the present invention, various non-limiting embodiments of the invention are described in detail below. Any number of elements in the drawings are by way of example and not by way of limitation, and any nomenclature is used solely for differentiation and not by way of limitation.

The principles and spirit of the present invention are explained in detail below with reference to a number of representative embodiments of the invention.

As shown in fig. 1 to 9, the utility model provides a frequency conversion all-in-one machine includes permanent-magnet machine 3, converter 7 and reduction gear 2. The axial direction of the permanent magnet motor 3 extends along the front-back direction, the frequency converter 7 is fixedly installed on the radial outer side of the permanent magnet motor 3, and the speed reducer 2 is installed at the front end of the permanent magnet motor 3 in an integrated mode. And the speed reducer 2 is provided with an input shaft and an output shaft, the input shaft of the speed reducer 2 is coaxially connected with a motor shaft of the permanent magnet motor 3 in a transmission way, the output shaft of the speed reducer extends forwards, and the output shaft is used as a power output end of the frequency conversion all-in-one machine. In addition, a rectangular flange mounting plate 1 is arranged at the front end of the speed reducer 2, and the flange mounting plate 1 is used for fixedly mounting the frequency conversion all-in-one machine on a corresponding support through a flange connection structure, in other words, when the frequency conversion all-in-one machine is hoisted and lowered to be in place, the flange mounting plate 1 is fixedly mounted on the corresponding support, and the whole frequency conversion all-in-one machine can be fixedly mounted. The support can be a support flange plate, and the support flange plate is fixedly arranged at a corresponding position of the scraper conveyor. During assembly, the supporting flange plate is in butt joint assembly with the flange mounting plate 1, and a fixing bolt penetrates between the supporting flange plate and the flange mounting plate to realize fixed assembly of the supporting flange plate and the flange mounting plate and fixedly mount the whole frequency conversion all-in-one machine.

As shown in fig. 1, a mounting seat 4 is fixedly arranged on the casing of the permanent magnet motor 3, and a frequency converter 7 is fixedly arranged on the mounting seat 4, so that the frequency converter 7 is fixed on the outer side of the casing in the radial direction of the permanent magnet motor 3.

When the frequency conversion all-in-one machine is applied specifically, the frequency conversion all-in-one machine can be installed on the scraper conveyor to drive the scraper chain on the scraper conveyor to move. Because the direct integrative integration of converter 7 is installed on permanent-magnet machine 3, and fixed mounting has the flange mounting panel 1 of square on the reduction gear 2 of front side, the installation gesture of convenient gyration adjustment frequency conversion all-in-one according to actual mounted position effectively improves the all-in-one commonality, reduces and is equipped with quick-witted quantity.

Specifically, the variable frequency all-in-one machine can be installed at the tail position of the scraper conveyor as shown in fig. 1 to serve as a tail power device. During installation, the all-in-one machine needs to be hoisted and lowered in a first lowering posture as shown in fig. 1, and the frequency converter 7 is located on the left side of the level of the permanent magnet motor 3. When the flange mounting plate is put down in place, the flange mounting plate 1 and the corresponding support at the tail position are directly and fixedly assembled.

The frequency conversion all-in-one machine can also be installed in the aircraft nose position of scraper conveyor as shown in fig. 8 and be regarded as aircraft nose power device, and at this moment, all-in-one machine need be transferred the gesture with the second as shown in fig. 8 and is hoisted and transferred, and frequency converter 7 is located permanent-magnet machine 3's horizontal right side. When the speed reducer is put down in place, the flange mounting plate 1 of the speed reducer 2 can be directly and fixedly assembled with the corresponding support at the position of the machine head.

In addition, the frequency conversion all-in-one machine can also be arranged at the middle position of the scraper conveyor as shown in fig. 9 to be used as a third power device. During specific installation, the all-in-one machine can be hoisted and lowered in a third lowering posture shown in fig. 9, and the frequency converter 7 is located above the permanent magnet motor 3. When the integrated machine is moved in place, the flange mounting plate 1 and the corresponding support are fixedly assembled by fastening bolts.

In the embodiment shown in fig. 1 to 7, the frequency converter 7 is a flat rectangular structure as a whole, the frequency converter 7 includes a rectangular housing, functional devices for implementing corresponding functions of the frequency converter 7 are disposed in the housing, and the housing of the frequency converter 7 is fixedly disposed outside a casing of the permanent magnet motor 3 in a radial direction of a motor shaft of the permanent magnet motor 3. Corresponding to the square flange mounting plate 1, the frequency converter 7 is arranged alongside the housing along one side of the flange mounting plate 1. In order to meet the explosion-proof requirement of the underground coal mine, the shell of the frequency converter 7 is an explosion-proof shell.

The frequency converter 7 has a front-rear direction which is consistent with the front-rear axial direction of the motor, the front end of the casing of the frequency converter 7 is a rectangular terminal 8, and as shown in fig. 2, the long side of the rectangular terminal 8 is arranged in parallel with one side of the square flange mounting plate 1. A wiring position is arranged at the rectangular wiring end 8 of the shell, a wiring box 5 can be arranged at the wiring position, an electric connector 6 and a communication connector (not shown in the figure) are arranged on the wiring box 5, the electric connector 6 is used for connecting a power supply cable to supply power to the frequency converter 7, and the communication connector is used for connecting an external communication cable to meet the requirement of the frequency converter 7 on communication with the outside.

In order to ensure that the terminal box 5 on the frequency converter can normally work when the frequency converter 7 is turned to different lowering postures along with the permanent magnet motor 3, two wiring positions, namely a first wiring position 71 and a second wiring position 72, are arranged on the rectangular wiring end 8, wherein the two wiring positions are arranged at two ends of the long edge of the rectangular wiring end 8 in a one-to-one correspondence manner, in other words, the two wiring positions are arranged close to the short edges of two sides of the rectangular wiring end 8 in a one-to-one correspondence manner. In the specific assembly, the junction box 5 can be detachably mounted at one of the wiring positions according to actual requirements.

Two wiring units 10 are arranged in the shell corresponding to the two wiring positions, and the two wiring units 10 are arranged corresponding to the two wiring positions one by one. The two wiring units 10 are arranged in parallel, and when the junction box 5 is connected with any one wiring unit 10, the power supply requirement and the communication requirement of the frequency converter can be met.

As shown in fig. 2 and 3, the two wiring units 10 are identical in structure, and each includes a unit main body for fixedly mounting on the rectangular terminal 8 of the housing, and a power supply wiring member 101 and a communication wiring member 102 provided on the unit main body. As a specific embodiment, the connection unit 10 may be provided with a power supply connection element and a communication connection element directly penetrating the unit main body, wherein one end of the power supply connection element and the communication connection element is used for connecting with functional accessories inside the frequency converter through corresponding wires, and the other end of the power supply connection element and the communication connection element is used for electrically connecting with an electric connector and a communication connector on the junction box through connecting wires. As a further embodiment, in the case of the supply connection element, an inner connection element and an outer connection element can also be provided on the unit body, which are connected in an electrically conductive manner to one another, the inner connection element being connected to a functional accessory inside the frequency converter via a corresponding line, and the outer connection element being used for electrically conductive connection to an electrical connector on the terminal box via a connecting line. Similarly, the communication wiring piece can be realized by adopting the structure of the inner and outer wiring pieces.

One of the junction boxes 5 is detachably mounted at any one of the two junction boxes, and can be connected with the corresponding junction unit 10 at the junction box, so as to supply power to the frequency converter 7 through the corresponding junction unit 10 and realize communication connection between the frequency converter 7 and the outside.

As shown in fig. 5, the junction box 5 includes a main box body provided with an electrical connector 6 and a communication connector (not shown). As shown in fig. 8, the main box body is a rectangular parallelepiped, and has a first box wall 51 and a second box wall 52 spaced from each other in the front-rear direction, and a middle box wall located between the first box wall 51 and the second box wall 52, the first box wall 51 and the second box wall 52 are both rectangular, the middle box wall includes four side box walls, which correspond to four sides of the first box wall 51, and the front and rear ends of each side box wall correspond to the first box wall 51 and the second box wall 52 and are fixedly assembled. One of the four side box walls is a plane mounting box wall 15, the plane mounting box wall 15 is fixedly provided with an electric connector 6 and a communication connector, and the plugging direction of the electric connector 6 and the plugging direction of the communication connector are arranged in parallel. It should be particularly noted that, because the voltage required by the internal functional device of the frequency converter 7 is divided into two levels, one voltage level is higher, and the other voltage level is lower, two electrical connectors 6 are usually arranged corresponding to the two voltage levels, the two electrical connectors 6 are used for electrically connecting corresponding power supply cables, and plugs are arranged on the power supply cables, and when in use, the plugs and the corresponding electrical connectors 6 are electrically connected in an inserting manner.

In the case of the terminal box 5, the first box wall 51 is intended to be mounted detachably fixed at a first 71 of the two wiring positions and the second box wall 52 is intended to be mounted detachably fixed at a second 72 of the two wiring positions. As shown in fig. 1 and 2, the first wire position 71 is located above the second wire position 72, and when the first box wall 51 is detachably and fixedly mounted at the first wire position 71 of the rectangular terminal 8 of the frequency converter 7, the terminal box 5 can be mounted on the rectangular terminal 8 in the first fixed posture. When the integrated inverter shown in fig. 2 is turned over by 180 ° to the position shown in fig. 8, the second wire connecting position 72 is located above the first wire connecting position 71, and as shown in fig. 8, the second box wall 52 is detachably and fixedly mounted at the second wire connecting position 72 of the rectangular terminal 8 of the inverter 7, so that the terminal box 5 is mounted on the rectangular terminal 8 in the second fixed position. In the embodiment shown in fig. 2 and 8, the plugging directions of the electrical connectors 6 on the junction box 5 in the first and second fixed postures are arranged horizontally for horizontal plug-fitting of the power supply cable.

As for the junction box 5, the first box wall 51 and the second box wall 52 are respectively provided with wire passing holes, as shown in fig. 7, the wire passing holes on the first box wall 51 are square holes, the wire passing holes on the first box wall 51 and the second box wall 52 are mainly used for passing through corresponding internal power supply cables and internal communication cables, the internal power supply cables are mainly used for realizing the conductive connection between the electrical connector 6 and the corresponding wiring units 10 at the corresponding wiring positions, and the internal communication cables are mainly used for realizing the conductive connection between the communication connector and the corresponding wiring units 10 at the corresponding wiring positions.

The first box wall 51 and the second box wall 52 are respectively provided with a first mounting hole 12 for mounting a fastening screw, and the first box wall 51 and the second box wall 52 are both provided with a second mounting hole 13 for mounting a fixing screw. The first and second mounting holes in the first box wall 51 are arranged in the same manner as the first and second mounting holes in the second box wall 52. The arrangement of the first and second mounting holes on the first cartridge wall 51 will be specifically described herein as an example. As shown in fig. 7, the wire passing hole 11 on the first box wall 51 is a square hole, the central lines of the first mounting hole 12 and the second mounting hole 13 both extend along the front-back direction, and the first mounting hole 12 and the second mounting hole 13 are both located at the outer side of the wire passing hole 11, and the first mounting hole 12 and the second mounting hole 13 are both distributed in a plurality around the wire hole, and the plurality of first mounting holes 12 and the plurality of second mounting holes 13 are both distributed in a square shape, and as shown in fig. 7, the second mounting hole 13 is located at the inner side of the first mounting hole 12.

As for the first mounting holes 12 on the first box wall 51, 8 first mounting holes 12 are provided in fig. 7, and 8 first mounting holes 12 are arranged in a square manner, and the terminal box 5 can be detachably fixed to the rectangular terminals 8 by fastening screws inserted into the first mounting holes 12.

As shown in fig. 7, the first box wall 51 is further provided with 8 second mounting holes 13, the 8 second mounting holes 13 are also arranged in a square manner, and specifically, the wire passing hole baffle 53 can be detachably and fixedly mounted on the outer side surface of the first box wall 51 by using fixing bolts inserted into the second mounting holes 13 to shield the wire passing holes on the first box wall 51. To ensure safety and reliability, a sealing ring groove is usually provided on the corresponding outer side surface of the first box wall 51, the sealing ring groove is arranged around the thread hole, a sealing ring is filled in the sealing ring groove, and the sealing ring is pressed by using the thread hole baffle 53 to form a reliable seal.

In the case of the first and second box walls 51 and 52, in order to ensure normal operation, when fastening screws are inserted into the first mounting holes 12 of one box wall to detachably fix the terminal block 5 to the rectangular terminals 8, fixing screws may be inserted into the second mounting holes 13 of the other box wall to detachably mount the wire hole blocking plates 53 at the wire holes of the other box wall.

The plurality of first mounting holes 12 on the first box wall 51 and the second box wall 52 are arranged in a square shape, so that the same terminal box 5 can be fixedly mounted at a first wiring position 71 of the rectangular terminal 8 in a first mounting posture shown in fig. 2, and also can be fixedly mounted at a second wiring position 72 of the rectangular terminal 8 in a second mounting posture shown in fig. 8 after the permanent magnet motor 3 is turned over by 180 degrees, and also can be fixedly mounted at a first wiring position of the rectangular terminal 8 in a third mounting posture shown in fig. 9 after the permanent magnet motor 3 is turned over by 90 degrees from the position shown in fig. 2, and corresponding to three different mounting postures, only the corresponding mounting postures need to be selected to mount the terminal box 5 at the rectangular terminal 8.

Based on the above requirement for adjusting the different installation postures of the junction box 5 after the permanent magnet motor 3 is turned over, in a specific implementation, the plurality of first installation holes 12 on the first box wall 51 and the second box wall 52 may be distributed in a circular shape or in a regular even-numbered polygon, for example, in a regular hexagon or a regular octagon. As another specific embodiment, if only the terminal box 5 is required to be applied to the two installation postures shown in fig. 2 and 8, the plurality of first installation holes 12 on the first box wall 51 and the second box wall 52 may also be distributed in a rectangular shape, and as an extension, a person skilled in the art may distribute the plurality of first installation holes 12 on the first box wall 51 and the second box wall 52 in a central symmetrical pattern.

In the embodiment shown in fig. 7, the first box wall 51 and the second box wall 52 are both rectangular, so that the overall dimensions are relatively small, in addition to satisfying normal installation and position exchange requirements. In other embodiments, the first box wall 51 and the second box wall 52 may be both square or circular.

As for the junction box 5, as shown in fig. 6, a partition plate 58 is provided in the main box body, the partition plate 58 partitions the inner cavity of the main box body into a power supply explosion-proof cavity 59 and a communication intrinsic safety cavity 57, and the wire passing holes 11 on the first box wall 51 and the second box wall 52 of the main box body are both communicated with the power supply explosion-proof cavity 59, so that the power supply explosion-proof cavity can be communicated with the inner cavity of the explosion-proof housing of the frequency converter no matter what installation posture the junction box 5 is.

Electric connector 6 on the main box body corresponds power supply explosion-proof chamber 59 and arranges, during concrete assembly, arranges inside power supply cable in power supply explosion-proof chamber 59, and the one end and the electric connector 6 of inside power supply cable are connected, and the other end is connected with power supply wiring piece 101 of the wiring unit 10 that corresponds wiring position department.

The communication connector on the main box body corresponds communication ann's chamber 57 setting, and during the specific assembly, the inside communication cable passes communication ann's chamber 57, division board 58 and power supply explosion-proof chamber 59 in proper order and arranges. In fact, due to the existence of the partition plate 58, it is possible to arrange the intercom cable in sections, as shown in fig. 6, for example, the intercom cable includes a first cable section located in the communication intrinsically safe cavity 57, one end of which is connected with a communication connector (not shown) and the other end of which is connected with the intermediate connector 56, a second cable section located in the power supply explosion-proof cavity 59, and the intermediate connector 56 sealingly fixed on the partition plate 58, and the other end of which is connected with the intermediate connector 56 and the other end is used for being connected with the communication wiring piece 102 of the wiring unit 10 at the corresponding wiring site, so that the intercom cable connects the communication connector and the communication wiring piece 102 of the wiring unit 10 at the corresponding wiring site. The communication connector can be externally connected with a communication cable, and the communication wiring piece 102 is connected with a corresponding functional device inside the frequency converter 7 so as to meet the communication requirement of the frequency converter.

As shown in fig. 6 and 7, an upper mounting hole 60 and a lower mounting hole 14 are formed in the planar mounting box wall 15 of the main box body, the electrical connector 6 is hermetically mounted in the upper mounting hole 60, a positioning cover plate 54 is detachably and hermetically mounted in the lower mounting hole 14, a plurality of through holes 55 are formed in the positioning cover plate 54, and the communication connectors are hermetically mounted in the through holes 55, respectively.

When the all-in-one machine is installed at the tail position of the scraper conveyor according to the installation posture shown in fig. 2 in specific use, the frequency converter 7 is located on the horizontal left side of the permanent magnet motor 3, and the first box wall 51 of the junction box 5 is installed at the first wiring position 71 located above, so that the safety can be improved to avoid submerging the junction box in underground water seepage. In addition, because the diameter of the power supply cable is usually larger, if the power supply cable is bent, the turning radius is smaller, so that the installation posture of the junction box can be adjusted, the plugging direction of the electric connector on the junction box is horizontally arranged, and the horizontal connection of the power supply cable to the electric connector is facilitated.

When the all-in-one machine is installed at the head position of the scraper conveyor according to the installation posture shown in fig. 8, the frequency converter 7 is positioned at the horizontal right side of the permanent magnet motor 3, and the second box wall 52 of the junction box 5 is installed at the second wiring position 72 positioned above, so that the situation that the junction box is submerged when water seeps underground is avoided. Similarly, for the power supply cable with a larger diameter, the installation posture of the junction box can be adjusted, so that the electric connector on the junction box is horizontally arranged, and the power supply cable is convenient to connect the electric connector.

And when the all-in-one machine is arranged at the middle position of the scraper conveyor according to the installation posture shown in fig. 9, the permanent magnet motor 3 is turned over, so that the frequency converter 7 is positioned above the permanent magnet motor 3. At this time, since the first wire position 71 and the second wire position 72 of the inverter 7 are located at the same horizontal position, the terminal block 5 can be mounted at one wire position alternatively according to the actual situation. At this time, the first box wall 51 may be selected to be connected to the rectangular terminals 8, and the second box wall 52 may be selected to be connected to the rectangular terminals 8. In addition, the installation posture of the junction box 5 can be adjusted, so that the connectors on the junction box 5 are horizontally arranged, the power supply cable is convenient to connect with the electric connector, and the power supply cable does not need to be bent and deformed.

In the embodiment shown in fig. 2, 8 and 9, the plugging direction of the communication connector and the plugging direction of the electrical connector 6 are arranged in parallel, so that the power supply cable can be horizontally plugged with the electrical connector 6, the communication cable can be horizontally plugged with the communication connector, and further the power supply cable and the communication cable can be in the horizontal direction in the three installation postures shown in fig. 2, 8 and 9, without bending too much, the installation and use requirements of the corresponding connector can be met, for example, the electrical connector 6 cannot be arranged upwards to avoid water inflow and accidents.

It should be noted that, when the terminal box 5 is fixedly mounted on the first wiring position 71 of the rectangular terminal 8 as shown in fig. 2, the blocking plate 9 needs to be fixedly mounted on the second wiring position 72 of the rectangular terminal 8 of the frequency converter 7 to ensure the overall explosion-proof sealing performance of the frequency converter. Also, when the terminal block 5 is fixedly mounted on the second wiring position 72 of the rectangular terminal 8 as shown in fig. 8, it is necessary to fixedly mount the blocking plate 9 on the first wiring position 71 of the rectangular terminal 8 of the frequency converter 7 to ensure the overall explosion-proof sealing performance of the frequency converter.

The utility model provides an among the frequency conversion all-in-one, terminal box facial make-up distribution connector and communication connector, the different mounted position of cooperation frequency conversion all-in-one can select to change the terminal box position to satisfy different positions and be qualified for the next round of competitions the requirement, guarantee that the terminal box is in the eminence all the time, avoid the abominable condition under the well offal submergence terminal box and arouse the risk that the machine explodes to appear.

The utility model discloses still provide the embodiment of converter, the structure of the converter in this embodiment is the same with the structure of the converter in the above-mentioned frequency conversion all-in-one, no longer specifically gives unnecessary details here.

In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used herein, such as "upper," "lower," "front," "rear," "horizontal," "bottom," "inner," "outer," "axial," "radial," "center," and the like, refer to orientations and positional relationships that are illustrated in the drawings of the present specification for the purpose of convenience in describing aspects of the present invention and to simplify the description, and do not explicitly or implicitly indicate that the device or element involved must have the particular orientation, be constructed and operated in the particular orientation, and thus, should not be interpreted or construed as limiting the scope of the present invention.

In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.

While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. The following claims are intended to define the scope of the invention and, accordingly, to cover module compositions, equivalents, or alternatives falling within the scope of the claims.

Claims (10)

1. The utility model provides a converter of frequency conversion all-in-one which characterized in that includes:

the shell is provided with a front direction and a rear direction which are consistent with the front and rear axial directions of the motor of the frequency conversion all-in-one machine, one end of the shell in the front and rear direction is a rectangular wiring end, the rectangular wiring end is provided with two wiring positions, and the two wiring positions are arranged in a one-to-one correspondence manner with the two ends of the long edge of the rectangular wiring end;

the two wiring units are arranged in parallel, are positioned in the shell and are arranged in one-to-one correspondence with the two wiring positions, and each wiring unit is provided with a power supply wiring piece and a communication wiring piece respectively; and

the junction box is used for externally connecting a power supply cable and a communication cable, and can be selectively and detachably arranged at any one of the two wiring positions so as to be connected with the power supply wiring piece and the communication wiring piece of the wiring unit arranged corresponding to the wiring position.

2. The frequency converter of the variable frequency all-in-one machine according to claim 1, wherein the junction box has a main box body having a first box wall and a second box wall spaced apart from each other in a front-rear direction, and an intermediate box wall located between the first box wall and the second box wall, the intermediate box wall being provided with a power supply connector for externally connecting the power supply cable and a communication connector for externally connecting the communication cable, the first box wall being configured to be detachably and fixedly mounted at one of the two connection positions so that the junction box is mounted on the rectangular terminal in a first fixed posture, the second box wall being configured to be detachably and fixedly mounted at the other of the two connection positions so that the junction box is mounted on the rectangular terminal in a second fixed posture, a plugging direction of the electrical connectors on the junction box in the first fixed posture and the second fixed posture being arranged horizontally, the power supply cable is used for horizontal connection, the first box wall and the second box wall are respectively provided with a wire passing hole, the wire passing hole is used for allowing an internal power supply cable and an internal communication cable to pass through, the internal power supply cable is used for connecting the electric connector and the power supply wiring piece of the wiring unit at the corresponding wiring position, and the internal communication cable is used for connecting the communication connector and the communication wiring piece of the wiring unit at the corresponding wiring position.

3. The frequency converter of the frequency conversion all-in-one machine as claimed in claim 2, wherein the first box wall and the second box wall are both provided with first mounting holes for fastening screws to pass through, the first box wall and the second box wall are respectively provided with a second mounting hole for mounting a fixing screw in a penetrating way, the central lines of the first mounting hole and the second mounting hole extend along the front-back direction, the first mounting holes and the second mounting holes are positioned at the outer sides of the wire passing holes of the corresponding box walls and distributed in a plurality of numbers around the corresponding wire passing holes, the first box walls and the second box walls are arranged in the box body, when the fastening screw is penetrated in the first mounting hole on one box wall to detachably fix the junction box on the rectangular wiring terminal, the fixing screw is arranged in the second mounting hole on the other box wall in a penetrating mode, so that the wire passing hole baffle is detachably mounted at the wire passing hole on the box wall.

4. The frequency converter of the all-in-one frequency converter according to claim 3, wherein the first mounting holes on the first box wall and/or the second box wall are arranged in a circular or regular even polygon shape.

5. The frequency converter of the frequency conversion all-in-one machine according to claim 2, 3 or 4, characterized in that the casing is an explosion-proof casing, a partition plate is arranged in the main box body, the partition plate divides the inner cavity of the main box body into a power supply explosion-proof cavity and a communication intrinsic safety cavity, the wire passing holes on the first box wall and the second box wall are communicated with the power supply explosion-proof cavity, so that the power supply explosion-proof cavity is communicated with the inner cavity of the explosion-proof casing, the electric connector corresponds to the power supply explosion-proof cavity, the internal power supply cable is arranged in the power supply explosion-proof cavity, the communication connector corresponds to the communication intrinsic safety cavity, and the internal communication cable sequentially passes through the communication intrinsic safety cavity, the partition plate and the power supply explosion-proof cavity.

6. The frequency converter of the variable-frequency all-in-one machine according to claim 5, wherein the internal communication cable comprises a first cable segment located in the communication intrinsic safety cavity, a second cable segment located in the power supply explosion-proof cavity, and an intermediate connector fixedly sealed on the partition plate, one end of the first cable segment is connected with the communication connector, the other end of the first cable segment is connected with the intermediate connector, one end of the second cable segment is connected with the intermediate connector, and the other end of the second cable segment is used for being connected with the communication wiring piece of the wiring unit at the corresponding wiring position.

7. The frequency converter of the frequency conversion all-in-one machine as claimed in claim 2, 3 or 4, wherein the main box body is a rectangular parallelepiped structure, the middle box wall of the main box body is provided with a plane installation box wall between the first box wall and the second box wall, the plane installation box wall is fixedly provided with the electric connector and the communication connector, and the plugging direction of the electric connector is parallel to the plugging direction of the communication connector.

8. The frequency converter of the frequency conversion all-in-one machine according to any one of claims 1 to 4, wherein the two wiring units have the same structure.

9. The utility model provides a frequency conversion all-in-one which characterized in that includes:

the frequency converter of any one of claims 1 to 8; and

the motor extends axially along the front-back direction, the motor is provided with a shell and a motor shaft extending along the front-back direction, and the shell of the frequency converter is fixedly arranged outside the shell along the radial direction of the motor shaft.

10. The frequency conversion all-in-one machine according to claim 9, wherein the motor is a permanent magnet motor, a speed reducer is integrally mounted at the front end of the permanent magnet motor, the speed reducer is provided with an input shaft in coaxial transmission connection with the motor shaft, the speed reducer is further provided with an output shaft extending forwards, a rectangular flange mounting plate for fixedly mounting the frequency conversion all-in-one machine on a corresponding support is arranged at the front end of the speed reducer, the long edge of the rectangular wiring end of the frequency converter is arranged in parallel with one side edge of the rectangular flange mounting plate, and the rectangular wiring end of the frequency converter is located at the front end of the frequency converter.

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