CN217955734U - Novel mining intelligent high-voltage distribution device is with earthing switch - Google Patents

Abstract

The utility model relates to a novel mining intelligent high voltage distribution is earthing switch for device belongs to mining high-pressure vacuum distribution device technical field. One end of the telescopic plate, which is far away from the sliding block, is provided with a contact through a grounding copper bar, one end of the contact is designed into a screw rod and fixed on the telescopic plate, the other end of the contact is designed into a plum blossom contact, and the telescopic plate moves back and forth to realize the insertion or separation with a grounding contact rod on the explosion-proof shell, so that the switching-on and switching-off of the grounding switch are realized. The utility model discloses following beneficial effect has: the problem that the underground mining high-voltage vacuum power distribution device is not provided with the high-voltage grounding switch and can not be matched is effectively solved, the safety and reliability of power supply equipment during maintenance are improved, and the requirement of a coal mine for higher and higher safety requirements of the underground mining equipment is met. Meanwhile, due to the flat design of the high-voltage grounding switch, the occupied space of equipment can be reduced to the maximum extent, the structure is simple, the reliability is high, manual and electric operation can be realized, and the high-voltage grounding switch is suitable for popularization and use.

Description

Novel mining intelligent high-voltage distribution device grounding switch

Technical Field

The utility model relates to a novel mining intelligent high voltage distribution is earthing switch for device belongs to mining high-pressure vacuum distribution device technical field.

Background

At present, the safety requirement of a coal mine underground on mining equipment is higher and higher, a grounding switch of a mining high-voltage vacuum power distribution device is mainly used as an output load side for grounding, when the load side of the high-voltage power distribution device is overhauled (such as fastening bolts, dismounting cables and the like), a breaker switch is disconnected, and meanwhile, the grounding switch of a power distribution cabinet is needed, so that electric shock accidents caused by sudden power supply can be prevented, in addition, residual charges can be discharged, and the overhauling safety is facilitated. During the power failure maintenance, in order to protect operators, equipment and a system, the outgoing line is short-circuited to the ground through the grounding switch to carry out complete discharge, so that electric shock accidents caused by mistaken power transmission or reverse power transmission of a circuit can not be caused.

The mining high-voltage power distribution device is used as extremely important high-voltage power distribution equipment under a mine, at present, a high-voltage grounding switch is not equipped in most of the mining high-voltage power distribution devices, and in order to meet the requirement that a high-voltage vacuum configuration device for the underground coal mine meets the higher and higher equipment safety requirement, the mining high-voltage power distribution device equipped with the high-voltage grounding switch is an urgent need for the underground coal mine safety power utilization.

At present, the high-voltage grounding switch used on the high-voltage distribution cabinet on the market is difficult to be directly applied to a mining high-voltage configuration device due to the structural size of the external structure and the structural type of a high-voltage vacuum configuration device shell, even if the high-voltage vacuum distribution device shell is equipped with, a very large explosion-proof cavity is required to be separately added to place the high-voltage grounding switch, the volume of the explosion-proof shell can be increased greatly, the structure of an operating mechanism is complex, the labor intensity of assembly personnel is high, the maintenance and the inspection are difficult.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: in order to solve one of the problems, the novel grounding switch for the mining intelligent high-voltage power distribution device is provided.

Novel mining intelligent high voltage distribution device use earthing switch, its characterized in that: including fixed baseplate, be in the expansion plate of fixed baseplate top, install the slip table on fixed baseplate, slip table and expansion plate all set up along fixed baseplate's length direction, and the tail end of expansion plate is fixed on the slider of slip table, the slip table is used for driving the expansion plate along the length direction reciprocating motion of slip table, fixed baseplate's upper surface still has the restriction the guide structure of expansion plate direction of motion, the one end that the slider was kept away from to the expansion plate is installed the contact through the ground connection copper bar, one end of contact is designed into the silk pole and is fixed on the expansion plate, and the other end is designed into the form of plum blossom contact, realizes pegging graft or separate with the ground connection contact pole on the explosion-proof housing at the expansion plate back-and-forth movement, realizes earthing switch's combined floodgate and separating brake.

The mining high-voltage grounding switch has the advantages of being simple in structure, small in appearance size, simple and convenient to operate and install, capable of achieving manual operation, electric operation and brake separating operation, large in appearance size, complex in structure, large in occupied space for installation of explosion-proof shells of mining high-voltage power distribution devices, complex in structure of operating mechanisms, high in labor intensity of assembly personnel, capable of improving working efficiency of workers, capable of greatly improving safety and reliability of the mining high-voltage power distribution devices, and capable of filling the gap in the current market of the high-voltage grounding switch for the mining high-voltage power distribution devices.

Further, the sliding table comprises a base fixed on the upper surface of the fixed base, a lead screw front support is installed at the front end of the base, a lead screw rear support and a motor support which are parallel to the lead screw front support are installed at the rear end of the base, a gap is reserved between the lead screw rear support and the motor support, two ends of a lead screw are respectively and rotatably arranged on the lead screw front support and the lead screw rear support, a direct current motor is installed on the motor support, a power output shaft of the direct current motor is connected with the end portion of the lead screw through a coupler to drive the lead screw to rotate forwards or reversely, guide shafts which are parallel to the lead screw are respectively arranged on two sides of the lead screw, one end of each guide shaft is fixed on the lead screw front support, the other end of each guide shaft penetrates through the lead screw rear support and is fixed on the motor support, a lead screw nut is sleeved on the lead screw and fixedly connected with a sliding block, a guide sliding hole matched with the guide shaft is further arranged on the sliding block, the guide sliding hole is matched with the guide shaft to slide, the lead screw to drive the sliding block to move forwards by rotating the lead screw, the sliding block moves along the guide shafts under the guide of the left and right of 2 guide shafts, a telescopic plate is fixed on the sliding block and moves together with the sliding block, and the telescopic plate to play a role of supporting wheel.

Furthermore, the front end and the rear end of one side of the base are respectively provided with a terminal travel switch and a starting travel switch, so that automatic control is realized.

Furthermore, the starting travel switch and the final travel switch are respectively installed on the base through corresponding travel switch fixing plates, and installation is convenient and fast.

Furthermore, a position pressing plate which is in induction fit with the starting travel switch and the end travel switch is arranged on the sliding block, and the induction is sensitive.

Furtherly, guide structure is including fixing the backup pad at the fixed baseplate upper surface, the direction supporting wheel is installed to the upper end of backup pad, the lower surface of expansion plate extend its length direction be provided with direction supporting wheel complex guide way, restriction expansion plate along the length direction reciprocating motion of slip table.

Furthermore, one end of the screw, which is far away from the direct current motor, is provided with a connector matched with the operating handle, the connector is matched and connected with a connecting hole of the operating handle, and the screw can be driven by the operating handle to rotate forwards or backwards.

Compared with the prior art, the utility model discloses following beneficial effect has:

novel mining intelligent high voltage earthing switch for distribution device, effectively solved mining high voltage vacuum distribution device in the pit and equipped with the difficult problem that high voltage earthing switch does not can match, fail safe nature when improving the power supply unit and overhauing satisfies the colliery and requires higher and higher requirement to the security of mining equipment in the pit. Meanwhile, the high-voltage grounding switch is flat in design, the occupied space of equipment can be reduced to the maximum extent, the structure is simple, the reliability is high, manual and electric operation can be realized, and the high-voltage grounding switch is suitable for popularization and use.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the structural schematic diagram of the sliding table of the present invention.

In the figure: 1. the device comprises an operating handle 2, a sliding table 21, a lead screw front support 22, a sliding block 23, a guide shaft 24, a lead screw 25, a base 26, a lead screw rear support 27, a coupler 28, a motor support 29, a direct current motor 3, a starting travel switch 4, a travel switch fixing plate 5, a position pressing plate 6, a fixing base 7, an end travel switch 8, a guide supporting wheel 9, a supporting plate 10, an expansion plate 11, a grounding copper bar 12 and a contact.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Examples

As shown in fig. 1-2, the novel earthing switch for mining intelligent high-voltage power distribution device comprises a fixed base 6, a retractable plate 10 located above the fixed base 6, and a sliding table 2 installed on the fixed base 6, wherein the sliding table 2 and the retractable plate 10 are both arranged along the length direction of the fixed base 6, the tail end of the retractable plate 10 is fixed on a slider 22 of the sliding table 2, the sliding table 2 is used for driving the retractable plate 10 to reciprocate along the length direction of the sliding table 2, the upper surface of the fixed base 6 is further provided with a guide structure for limiting the movement direction of the retractable plate 10, one end, far away from the slider 22, of the retractable plate 10 is provided with a contact 12 through an earthing copper bar 11, one end of the contact 12 is designed into a lead screw and fixed on the retractable plate 10, the other end of the contact is designed into a quincunx contact form, and the contact is inserted into or separated from an earthing contact bar on an explosion-proof shell by moving the retractable plate 10 back and forth, so as to realize the closing and opening of the earthing switch.

Preferably, the sliding table 2 includes a base 25 fixed on the upper surface of the fixed base 6, a lead screw front support 21 is installed at the front end of the base 25, a lead screw rear support 26 and a motor support 28 which are parallel to the lead screw front support 21 are installed at the rear end of the base 25, a gap is reserved between the lead screw rear support 26 and the motor support 28, two ends of a lead screw 24 are respectively and rotatably arranged on the lead screw front support 21 and the lead screw rear support 26, a direct current motor 29 is installed on the motor support 28, a power output shaft of the direct current motor 29 is connected with the end of the lead screw 24 through a coupler 27 to drive the lead screw 24 to rotate forward or backward, two sides of the lead screw 24 are respectively provided with a guide shaft 23 which is parallel to the lead screw 24, one end of the guide shaft 23 is fixed on the lead screw front support 21, the other end of the guide shaft penetrates through the lead screw rear support 26 and is fixed on the motor support 28, a lead screw nut is sleeved on the lead screw 24 and fixedly connected with the sliding block 22, the sliding block 22 is further provided with a guide slide hole which is matched with the guide shaft 23, the guide slide hole slides in cooperation with the guide shaft 23, the lead screw rotates to drive the sliding block to move forward, the left and the right of the guide shafts of the 2 guide shafts, and move along with the guide shafts, and the guide plate, and the sliding block support the guide plate, and the sliding block, and the guide plate;

preferably, the front end and the rear end of one side of the base 25 are respectively provided with an end-point travel switch 7 and a start travel switch 3, so as to realize automatic control;

preferably, the starting travel switch 3 and the ending travel switch 7 are respectively installed on the base 25 through corresponding travel switch fixing plates 4, so that the installation is convenient;

preferably, the slide block 22 is provided with a position pressing plate 5 which is in induction fit with the starting travel switch 3 and the end travel switch 7, and the induction is sensitive;

preferably, the guide structure comprises a support plate 9 fixed on the upper surface of the fixed base 6, a guide support wheel 8 is mounted at the upper end of the support plate 9, a guide groove matched with the guide support wheel 8 is formed in the lower surface of the expansion plate 10 along the length direction of the lower surface, and the expansion plate 10 is limited to reciprocate along the length direction of the sliding table 2;

preferably, one end of the screw 24, which is far away from the dc motor 29, is provided with a connector which is matched with the operating handle 1, the connector is matched and connected with a connecting hole of the operating handle 1, and the screw 24 can be driven by the operating handle 1 to rotate forward or backward.

The base 25 of slip table 2 passes through the bolt fastening on fixed baseplate 6, the expansion plate 10 is fixed on the slider 22 on slip table 2 through 4 fix with screws, originated travel switch 3 and terminal travel switch 7 are fixed on the base 25 of slip table 2 through corresponding travel switch fixed plate 4 respectively, position clamp plate 5 is fixed on the slider 22 on slip table 2, direction supporting wheel 8 is fixed on backup pad 9, backup pad 9 is fixed on fixed baseplate 6, contact 12 is fixed at the front end of expansion plate 10, ground connection copper bar 11 is fixed between 12 boxes of expansion plate 10 of contact.

The operation hole on the operation handle 1 is an inner square hole and is matched with a square structure at the front end of the screw rod 24 in the sliding table 2.

The sliding table 2 comprises a lead screw front support 21, a sliding block 22, a guide shaft 23, a lead screw 24, a base 25, a lead screw rear support 26, a coupler 27, a motor support 28 and a direct current motor 29.

The starting travel switch 3 and the final travel switch 7 are respectively fixed on the base 25 of the sliding table 2 through the travel switch fixing plate 4 and are used for positioning the starting position and the final position of the telescopic plate 10.

The travel switch fixing plate 4 is a Z-shaped plate, one side of the travel switch fixing plate is used for fixing a travel switch, the other side of the travel switch fixing plate is fixed on the base 25 of the sliding table 2, and the position of the travel switch fixing plate 4 on the base 25 is adjusted according to the starting position and the ending position of the expansion plate 10.

The position pressing plate 5 is fixed on a sliding block 22 on the sliding table 2 and moves back and forth along with the sliding block 2, the structure of the position pressing plate is L-shaped, when a direct current motor 29 works, the sliding block 22 moves forwards or backwards under the clockwise or anticlockwise rotation action of a lead screw 24, the direct current motor is powered off after the lead screw touches a starting travel switch 3 and a final travel switch 7, and the sliding block 22 stops moving.

The fixed pedestal 6 is used for fixing the sliding table 2 and the supporting plate 9, is finally fixed in an inner cavity of the explosion-proof shell and is used for installing and fixing the high-voltage grounding switch.

The guide supporting wheel 8 is fixed on an L-shaped supporting plate 9 and is used for supporting and guiding the telescopic plate 10 during moving back and forth.

The expansion plate 10 is an L-shaped plate, the front end of the expansion plate is provided with 4 unthreaded holes corresponding to 4 threaded holes on the sliding block 22, the rear end of the expansion plate is provided with 5 holes, 3 holes are used for fixing the contact 12, and the other 2 holes are used for fixing the grounding copper bar 11, are connected with a grounding seat on an explosion-proof shell of the high-voltage distribution device and are used for grounding.

One end of the contact 12 is designed into a screw rod fixed on the expansion plate 10, the other end of the contact is designed into a plum blossom contact, and the expansion plate 10 moves back and forth to realize the insertion or separation with a grounding contact rod on the explosion-proof shell, so that the switching-on and switching-off of the grounding switch are realized.

The utility model discloses a theory of operation:

manual operation:

an operation handle hole is inserted into a square shaft at the front end of a lead screw, the lead screw is rotated clockwise through the operation handle shaft, the lead screw rotates to drive a sliding block to move forwards, the sliding block moves along a guide shaft under the guide effect of 2 guide shafts, a telescopic plate is fixed on the sliding block and moves along with the sliding block, a guide support wheel plays a supporting and guiding effect on the telescopic plate, the telescopic plate keeps parallel motion in motion, when the sliding block moves to be in contact with a rear support of the lead screw, the lead screw cannot rotate, the operation handle cannot rotate any more, and at the moment, a contact on the telescopic plate is just inserted into a contact rod on a power distribution device, so that the switching-on of a manual grounding switch is completed; otherwise, the operating handle is operated anticlockwise, the screw rotates anticlockwise to drive the sliding block to move backwards, and after the sliding block is contacted with the front support of the screw, the operating handle cannot rotate any more to complete manual brake opening of the grounding switch.

Electrically operated:

when the grounding switch is switched on, a switching-on signal is given to the sliding table direct current motor, the sliding table direct current motor rotates clockwise, an output shaft of the direct current motor is connected with the lead screw through a coupler to drive the lead screw to rotate clockwise, the lead screw rotates to drive the sliding block to move forwards, the sliding block moves along the guide shafts under the guide effect of 2 guide shafts, the telescopic plate is fixed on the sliding block and moves along with the sliding block, the guide support wheel plays a supporting and guiding role on the telescopic plate to enable the telescopic plate to move to keep parallel motion, when a position pressing plate on the sliding block touches a terminal travel switch, the direct current motor is powered off, the output shaft of the motor stops rotating, the lead screw cannot rotate, and at the moment, a contact on the telescopic plate is just inserted into a contact rod on the power distribution device to complete the switching-on of the electric grounding switch; on the contrary, a brake-separating signal is given to the sliding table direct-current motor, the sliding table direct-current motor rotates anticlockwise, the screw rod also rotates anticlockwise to drive the sliding block to move backwards, when the position pressing plate on the sliding block touches the starting travel switch, the direct-current motor is powered off, the motor output shaft stops rotating, the sliding block returns to the starting position, and the electric brake-separating of the grounding switch is completed.

Novel mining intelligent high voltage earthing switch for distribution device, effectively solved mining high voltage vacuum distribution device in the pit and equipped with the difficult problem that high voltage earthing switch does not can match, fail safe nature when improving the power supply unit and overhauing satisfies the colliery and requires higher and higher requirement to the security of mining equipment in the pit. Meanwhile, the high-voltage grounding switch is flat in design, the occupied space of equipment can be reduced to the maximum extent, the structure is simple, the reliability is high, manual and electric operation can be realized, and the high-voltage grounding switch is suitable for popularization and use.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

The details of the present invention are not described in detail, but are known to those skilled in the art.

Claims (7)

1. The utility model provides a novel mining intelligent high voltage distribution is earthing switch for device which characterized in that: including fixed baseplate (6), be in expansion plate (10) of fixed baseplate (6) top, install slip table (2) on fixed baseplate (6), the length direction setting of fixed baseplate (6) is all followed in slip table (2) and expansion plate (10), and the tail end of expansion plate (10) is fixed on slider (22) of slip table (2), slip table (2) are used for driving the length direction reciprocating motion of expansion plate (10) along slip table (2), the upper surface of fixed baseplate (6) still has the restriction expansion plate (10) direction of motion's guide structure, contact (12) are installed through ground copper bar (11) to the one end that slider (22) were kept away from in expansion plate (10).

2. The novel grounding switch for the mining intelligent high-voltage power distribution device according to claim 1, characterized in that: slip table (2) is including fixing base (6) upper surface base (25), support (21) before the lead screw is installed to the front end of base (25), support (26) and motor support (28) behind the lead screw that support (21) parallels before base (25) rear end is installed with the lead screw, reserve the clearance between support (26) and motor support (28) behind the lead screw, the both ends of lead screw (24) rotate respectively and set up before the lead screw on support (21) and lead screw after support (26), install direct current motor (29) on motor support (28), the power output shaft of direct current motor (29) passes through shaft coupling (27) and the end connection of lead screw (24) with drive lead screw (24) corotation or reversal, the both sides of lead screw (24) are provided with one rather than being parallel to each other guide shaft (23) respectively, the one end of guide shaft (23) is fixed on support (21) before the lead screw, and the other end runs through support (26) behind the lead screw and fixes on motor support (28), and the cover is equipped with screw nut on lead screw (24), and slider (22) fixed slide hole (23) and slide guide shaft (23), and slide hole (23) cooperation is provided with guide shaft (23).

3. The novel grounding switch for the mining intelligent high-voltage power distribution device according to claim 2, characterized in that: the front end and the rear end of one side of the base (25) are respectively provided with a final travel switch (7) and a starting travel switch (3).

4. The novel grounding switch for the mining intelligent high-voltage power distribution device according to claim 3, characterized in that: the starting travel switch (3) and the final travel switch (7) are respectively installed on the base (25) through corresponding travel switch fixing plates (4).

5. The novel grounding switch for the mining intelligent high-voltage power distribution device according to claim 4, characterized in that: and a position pressing plate (5) which is in induction fit with the starting travel switch (3) and the final travel switch (7) is arranged on the sliding block (22).

6. The novel grounding switch for the mining intelligent high-voltage power distribution device according to claim 5, characterized in that: the guide structure comprises a supporting plate (9) fixed on the upper surface of the fixed base (6), a guide supporting wheel (8) is installed at the upper end of the supporting plate (9), and a guide groove matched with the guide supporting wheel (8) is formed in the lower surface of the expansion plate (10) along the length direction of the expansion plate.

7. The novel grounding switch for the mining intelligent high-voltage power distribution device according to claim 6, characterized in that: one end of the screw rod (24), which is far away from the direct current motor (29), is provided with a connector matched with the operating handle (1), the connector is matched and connected with a connecting hole of the operating handle (1), and the screw rod (24) can be driven to rotate forwards or backwards through the operating handle (1).

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