CN211629014U - Manual-automatic integrated double-side propelling circuit breaker input end isolation body of high-voltage power distribution cabinet for mine - Google Patents
Manual-automatic integrated double-side propelling circuit breaker input end isolation body of high-voltage power distribution cabinet for mine Download PDFInfo
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- CN211629014U CN211629014U CN202020558601.5U CN202020558601U CN211629014U CN 211629014 U CN211629014 U CN 211629014U CN 202020558601 U CN202020558601 U CN 202020558601U CN 211629014 U CN211629014 U CN 211629014U
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Abstract
The invention discloses a manual-automatic integrated double-side push circuit breaker input end isolation body of a mining high-voltage power distribution cabinet, which solves the problem of how to realize manual-automatic integrated high-quality in-place plugging of the existing split circuit breaker isolation body. The split-type circuit breaker isolating body changes a single-side swing rod type manual driving mode of a moving frame with three input end moving contacts in the existing split-type circuit breaker isolating body into a manual driving mode and an electric driving mode which can replace conversion, overcomes the defect of unbalance loading and meets the requirement of automatic control; by adopting the telescopic universal coupling and arranging the gap between the driving part and the driven part, the problem of centering and aligning of the moving contact and the static contact during plugging and separating is solved; through setting up limit switch to set up the mechanical structure who makes things convenient for limit switch position adjustment, conveniently leave the factory at the circuit breaker and the position adjustment in the use, improve the mechanical properties when connecing of circuit breaker sound contact and connecing and separating, thereby guarantee its electrical property.
Description
Technical Field
The invention relates to a mining high-voltage power distribution cabinet, in particular to a circuit breaker isolation body in the mining high-voltage power distribution cabinet.
Background
The high-voltage power distribution cabinets under the coal mine are all provided with breaker isolation bodies, the breaker isolation bodies realize the cutting-off of a high-voltage power supply circuit through the separation between a moving contact and a static contact seat, and the breakers simultaneously undertake the switching-on and switching-off tasks of a high-voltage three-phase input end and a high-voltage three-phase output end; in the existing equipment, three input end moving contacts and three output end moving contacts are generally integrated on a moving contact isolation trolley, and the moving contacts and a static contact seat are spliced and separated by manually pushing and pulling the moving contact isolation trolley; in order to overcome the defect, a breaker manufacturer develops a split breaker isolating body for separating a power input contact from a circuit output contact, three output end moving contacts are still arranged on a trolley on the lower part of the split breaker isolating body, two parallel moving frame guide rails are independently arranged right above the trolley on the lower part, a moving frame is arranged on the two parallel guide rails of the moving frame in a sliding manner, three input end moving contacts are arranged on the moving frame, and the three input end moving contacts are inserted into and disconnected from three input end static contact seats arranged on a middle partition plate by pushing or pulling out the moving frame, so that the power-off isolating function of the breaker is realized; however, the split structure still needs manual field operation, cannot realize remote or ground remote control, cannot meet the requirement of modern mine management, and how to realize remote operation of the split isolation body of the underground circuit breaker by the ground control room is a technical problem to be solved on the field.
The split type circuit breaker isolation body is characterized in that an input moving contact and an output moving contact are respectively arranged on independent moving bodies, the improved isolation body structure overcomes the defect of heavy weight of a moving trolley and facilitates the operation of field operators, but in order to ensure that a safe electrical distance exists between a lower trolley and an upper moving frame, only a driving swing rod mechanism of the moving frame can be arranged on one side of the moving frame, the field operators drive the moving frame to advance and withdraw by rotating a handle arranged on one side of an isolation box through a swing arm, and the separation and combination of the input moving contact and an input static contact are realized; the driving force is from one side of the movable frame, so that the movable frame is easy to have the phenomena of deviation and clamping stagnation in the moving process, the movable and fixed contacts are not inserted in place, the three-phase insertion resistance has larger difference, the normal operation of the underground electric equipment is directly influenced, and in addition, the unbalance loading phenomenon can greatly shorten the service life of the movable and fixed contacts at the input end of the isolating body.
The aim of pushing and pulling out a moving frame of three input end moving contacts arranged in an isolation body of the split type circuit breaker is to complete the connection and disconnection of the moving contacts and a static contact seat, and the insertion of the moving contacts and the static contact seat needs to be in place from the aspect of electrical performance; the connecting rod mechanism is manually driven on site, and the manual operation result needs to be observed and judged on site by means of auxiliary equipment to judge whether the movable contact is in place in the insertion connection with the static contact seat; how to control the plugging of the moving contact and the static contact seat in place by controlling the stroke of the moving frame is also a technical problem which is always explored by field technicians.
For the split type circuit breaker isolation body, when the split type circuit breaker isolation body is assembled before delivery, certain requirements are required on mechanical matching precision of a moving contact and a static contact, no matter a static contact assembled on a middle partition plate, a moving contact assembled on a moving frame, a moving frame and mechanical assembly of the moving frame and a guide rail of the moving frame, certain assembly errors exist, particularly in batch production, the assembly errors are particularly prominent, the assembly errors can be overcome, and after the assembly is completed, the assembly errors can be conveniently and timely adjusted, the assembly efficiency is improved, and the split type circuit breaker isolation body is also a practical problem in site; meanwhile, how to realize the alignment and centering of the moving and static contacts in the plugging process and realize reliable in-place plugging of the moving and static contacts, and how to realize the nondestructive flexible separation of the two contacts when the moving and static contacts are separated is also a problem to be considered when the product is in structural design.
Disclosure of Invention
The invention provides a manual-automatic integrated double-side push circuit breaker input end isolation body of a mining high-voltage power distribution cabinet, and solves the technical problem of how to realize manual-automatic integrated high-quality in-place plugging of the existing split circuit breaker isolation body.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: the split-type circuit breaker isolating body changes a single-side swing rod type manual driving mode of a moving frame with three input end moving contacts in the existing split-type circuit breaker isolating body into a manual driving mode and an electric driving mode which can replace conversion, overcomes the defect of unbalance loading and meets the requirement of automatic control; by adopting the telescopic universal coupling and arranging the gap between the driving part and the driven part, the problem of centering and aligning of the moving contact and the static contact during plugging and separating is solved; the position of the circuit breaker can be conveniently adjusted in the processes of delivery and use by arranging the limit switch and arranging the mechanical structure which is convenient for adjusting the position of the limit switch, and the mechanical performance of the circuit breaker when the movable and fixed contacts are inserted and separated is improved, so that the electrical performance of the circuit breaker is ensured, and the service life of the circuit breaker is prolonged; the invention improves the electrical performance of the high-voltage circuit breaker by matching the mechanical structure, thereby facilitating field assembly and realizing convenient adjustment in use.
A manual-automatic integrated double-side push circuit breaker input end isolation body of a mining high-voltage power distribution cabinet comprises a static contact, a U-shaped horizontal moving frame right guide rail and a U-shaped horizontal moving frame left guide rail which are arranged on a middle partition plate, wherein the U-shaped horizontal moving frame is movably arranged between the U-shaped horizontal moving frame right guide rail and the U-shaped horizontal moving frame left guide rail; a pair of right screw rod supports are arranged on the outer side of a right side plate of the U-shaped horizontal translation moving frame, a right screw rod is arranged on the pair of right screw rod supports, a right screw rod nut is arranged on the right screw rod, a right driving deflector rod is connected to the right screw rod nut, the other end of the right driving deflector rod is inserted into a long insertion through hole of the right driving deflector rod, a pair of left screw rod supports are arranged on the outer side of a left side plate of the U-shaped horizontal translation moving frame, a left screw rod is arranged on the pair of left screw rod supports, a left screw rod nut is arranged on the left screw rod, a left driving deflector rod is connected to the left screw rod nut, and the other end of the left; the front end of the left screw rod is connected with the output end of a left worm gear commutator, the input end of the left worm gear commutator is connected with one output end of a double-end output motor, the other output end of the double-end output motor is connected with the input end of a right worm gear commutator through a connecting shaft, and the output end of the right worm gear commutator is connected with the front end of the right screw rod; the double-end output motor is electrically connected with the remote central control room; the connecting axle is scalable universal joint, be provided with driven sprocket on the connecting axle, the fixed hand propeller shaft bearing that is provided with in driven sprocket below, be provided with hand transmission shaft in hand propeller shaft bearing, be connected with drive sprocket at the left end of hand transmission shaft, right-hand member at hand transmission shaft is connected with driven gear, the meshing has the driving gear on driven gear, the driving gear links together with the handle, be provided with drive chain between driven sprocket and drive sprocket.
A limiting plate is arranged at the top ends of the right screw rod supports, a limiting strip through hole is formed in the limiting plate, an inserting reminding limiting switch and a separating in-place reminding limiting switch are respectively arranged on one side of the limiting strip through hole, a movable limiting plate is arranged in the limiting strip through hole, and the lower end of the movable limiting plate is connected to a right screw rod nut; the plug-in reminding limit switch is electrically connected with a plug-in reminding indicator lamp, and the separation in-place reminding limit switch is electrically connected with a separation in-place reminding indicator lamp.
The plug-in reminding limit switch is arranged on the limit switch mounting plate, a limit switch position adjusting strip-shaped through hole is formed in the limit switch mounting plate, a fixing screw fixedly connects the limit switch mounting plate to the limit plate through the limit switch position adjusting strip-shaped through hole, and a plug-in-place buffer top section of the limit switch is arranged on the front side of the plug-in reminding limit switch.
A right side alignment buffer gap in the front-back horizontal direction is arranged between the right driving deflector rod and the right driving deflector rod insertion strip through hole; a left side alignment buffer gap in the front-back horizontal direction is arranged between the left driving deflector rod and the left driving deflector rod insertion strip through hole; a transverse plate of the U-shaped horizontal moving frame is provided with a left and right horizontal direction position adjusting strip through hole, and the moving contact is fixedly connected in the left and right horizontal direction position adjusting strip through hole through a moving contact fixing screw; the rectangular through-hole of vertical direction position adjustment about being provided with on the right side board of U-shaped horizontal migration frame, the right side guide arm passes through guide arm set screw fixed connection in the rectangular through-hole of vertical direction position adjustment about, is provided with the rectangular through-hole of vertical direction position adjustment about left on the left side board of U-shaped horizontal migration frame, and the left side guide arm passes through left guide arm set screw fixed connection in the rectangular through-hole of vertical direction position adjustment about the left.
The right guide rod is movably arranged in a guide groove of the right guide rail of the U-shaped horizontal moving frame, the left guide rod is movably arranged on the left side plate of the U-shaped horizontal moving frame, and the left guide rod is movably arranged in a guide groove of the left guide rail of the U-shaped horizontal moving frame.
The invention simultaneously realizes the ground remote control and the field manual control of the input end isolation body of the split type circuit breaker, overcomes the defect of easy unbalance loading in the switching-on and the breaking processes by synchronously driving the two side ends of the U-shaped horizontal moving frame, realizes the flexible connection and separation of the moving contact and the fixed contact through the limit switch, and conveniently and easily solves the problem of position adjustment of the moving contact and the U-shaped horizontal moving frame through the arrangement of the long through hole and the arrangement of the alignment gap between the driving part and the driven part.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the manual drive system of the present invention;
FIG. 3 is a schematic structural view of a spacing mechanism of the present invention;
FIG. 4 is a view showing the fitting relationship between the U-shaped horizontal moving frame 3 and the guide rails on both sides according to the present invention;
fig. 5 is a schematic structural view of a stationary contact 1 provided on an intermediate partition plate according to the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a manual-automatic integrated double-side push circuit breaker input end isolation body of a mining high-voltage power distribution cabinet comprises a static contact 1, a U-shaped horizontal moving frame right guide rail 4 and a U-shaped horizontal moving frame left guide rail 13 which are arranged on a middle partition plate, wherein a U-shaped horizontal moving frame 3 is movably arranged between the U-shaped horizontal moving frame right guide rail 4 and the U-shaped horizontal moving frame left guide rail 13, a moving contact 2 is arranged on a transverse plate of the U-shaped horizontal moving frame 3, a right driving deflector rod inserting strip through hole 9 is arranged on a right side plate of the U-shaped horizontal moving frame 3, and a left driving deflector rod inserting strip through hole 16 is arranged on a left side plate of the U-shaped horizontal moving frame 3; a pair of right screw rod supports 5 are arranged on the outer side of a right side plate of the U-shaped horizontal moving frame 3, a right screw rod 6 is arranged on the pair of right screw rod supports 5, a right screw rod nut 7 is arranged on the right screw rod 6, a right driving deflector rod 8 is connected to the right screw rod nut 7, the other end of the right driving deflector rod 8 is inserted in a right driving deflector rod insertion strip through hole 9, a pair of left screw rod supports 10 are arranged on the outer side of a left side plate of the U-shaped horizontal moving frame 3, a left screw rod 11 is arranged on the pair of left screw rod supports 10, a left screw rod nut 12 is arranged on the left screw rod 11, a left driving deflector rod is connected to the left screw rod nut 12, and the other end of the left driving deflector rod is inserted in; the front end of the left screw rod 11 is connected with the output end of a left worm gear commutator 17, the input end of the left worm gear commutator 17 is connected with one output end of a double-end output motor 19, the other output end of the double-end output motor 19 is connected with the input end of a right worm gear commutator 18 through a connecting shaft 20, and the output end of the right worm gear commutator 18 is connected with the front end of a right screw rod 6; the double-end output motor 19 is electrically connected with the remote central control room; the connecting shaft 20 is a telescopic universal coupling, a driven sprocket 21 is arranged on the connecting shaft 20, a hand-operated transmission shaft bearing 24 is fixedly arranged below the driven sprocket 21, a hand-operated transmission shaft is arranged in the hand-operated transmission shaft bearing 24, the left end of the hand-operated transmission shaft is connected with a driving sprocket 22, the right end of the hand-operated transmission shaft is connected with a driven gear 25, a driving gear 26 is meshed with the driven gear 25, the driving gear 26 is connected with a handle 27, and a transmission chain 23 is arranged between the driven sprocket 21 and the driving sprocket 22; the double-end output motor 19 synchronously drives the left screw rod 11 and the right screw rod 6 to rotate, so that the right driving deflector rod 8 and the left driving deflector rod synchronously move forwards or backwards, the U-shaped horizontal moving frame 3 cannot be subjected to unbalance loading in the moving process, the three moving contacts 2 and the three static contacts 1 are stably, accurately and in-place inserted and separated, and the electrical performance of the circuit breaker is ensured.
A limiting plate 28 is arranged at the top ends of the pair of right screw rod supports 5, a limiting strip through hole 29 is arranged on the limiting plate 28, an inserting reminding limiting switch 30 and a separating reminding limiting switch 31 are respectively arranged on one side of the limiting strip through hole 29, a movable limiting plate 32 is arranged in the limiting strip through hole 29, and the lower end of the movable limiting plate 32 is connected to the right screw rod nut 7; the plugging reminding limit switch 30 is electrically connected with a plugging reminding indicator lamp, and the in-place separation reminding limit switch 31 is electrically connected with an in-place separation reminding indicator lamp; when the U-shaped horizontal moving frame 3 is driven to advance forwards by the hand-operated handle 27, when the movable limiting plate 32 contacts the plug-in reminding limiting switch 30, the plug-in reminding indicator lamp is lightened to remind an operator that the movable and static contacts are contacted, the operator can adjust the force of the rotating handle 27 and feel whether the movable and static contacts are plugged in place, the movable contact and the static contact have alignment action by stopping or slightly reversely rotating the handle 27 until the movable limiting plate 32 enters the plug-in place buffering top end section 33 of the limiting strip through hole 29, and the handle 27 is not shaken, so that the reliable connection of the movable and static contacts is realized; when the mechanism is remotely controlled, a control program can be compiled in the controller according to the manual operation static and dynamic contact alignment method, and the flexible insertion of the contacts is realized through electric control.
The plug-in reminding limit switch 30 is arranged on the limit switch mounting plate 34, a limit switch position adjusting long through hole 35 is formed in the limit switch mounting plate 34, the limit switch mounting plate 34 is fixedly connected to the limit plate 28 through the limit switch position adjusting long through hole 35 by a fixing screw 36, and a plug-in position buffering top section 33 of the limit long through hole 29 is arranged on the front side of the plug-in reminding limit switch 30.
A right aligning buffer gap 40 in the front-back horizontal direction is arranged between the right driving deflector rod 8 and the right driving deflector rod inserting strip through hole 9; a left side alignment buffer gap in the front-back horizontal direction is arranged between the left driving deflector rod and the left driving deflector rod insertion strip through hole 16; a transverse plate of the U-shaped horizontal moving frame 3 is provided with a left and right horizontal direction position adjusting long through hole 38, and the moving contact 2 is fixedly connected in the left and right horizontal direction position adjusting long through hole 38 through a moving contact fixing screw 39; the rectangular through hole 37 of vertical direction position adjustment about being provided with on the right side board of U-shaped horizontal migration frame 3, right side guide arm 15 passes through guide arm set screw 41 fixed connection in the rectangular through hole 37 of vertical direction position adjustment about, is provided with the rectangular through hole of vertical direction position adjustment about the left on the left side board of U-shaped horizontal migration frame 3, left side guide arm 14 passes through left guide arm set screw fixed connection in the rectangular through hole of vertical direction position adjustment about the left.
A right guide rod 15 is arranged on the right side plate of the U-shaped horizontal moving frame 3, the right guide rod 15 is movably arranged in a guide groove of the U-shaped horizontal moving frame right guide rail 4, a left guide rod 14 is arranged on the left side plate of the U-shaped horizontal moving frame 3, and the left guide rod 14 is movably arranged in a guide groove of the U-shaped horizontal moving frame left guide rail 13.
The handle of the invention is also arranged at one side of the box body of the circuit breaker, so that the safe electrical distance is kept between the operating end and the trolley with the output end moving contact at the middle lower part of the box body, an operator drives the driven sprocket 21 arranged on the connecting shaft 20 through the driving sprocket 22 which is offset at one side of the box body of the circuit breaker, but the rotation of the driven sprocket 21 drives the whole connecting shaft 20 to rotate, the rotation of the connecting shaft 20 synchronously drives the left screw rod 11 and the right screw rod 6 to synchronously rotate through the left worm gear commutator 17 and the right worm gear commutator 18 respectively, thereby realizing the synchronous driving of two ends of the U-shaped horizontal moving frame 3 and overcoming the defect that the U-shaped horizontal moving frame 3 is easy to have offset load in the moving process; when the on-site manual operation is adopted, an operator only needs to shake the handle 27, the handle 27 drives the driven gear 25 to rotate through the driving gear 26, the driven gear 25 enables the driving sprocket 22 to rotate through a hand-operated transmission shaft in the hand-operated transmission shaft bearing 24, the driving sprocket 22 enables the driven sprocket 21 to rotate through the transmission chain 23, the driven sprocket 21 drives the connecting shaft 20 to rotate, the connecting shaft 20 respectively drives the left lead screw 11 and the right lead screw 6 to rotate synchronously through the left worm gear commutator 17 and the right worm gear commutator 18, the right driving deflector rod 8 and the left driving deflector rod to synchronously move forwards or synchronously move backwards, the U-shaped horizontal moving frame 3 cannot generate an unbalance loading phenomenon in the moving process, and the three moving contacts 2 and the three static contacts 1 are stably, accurately and in-place in an inserting and separating mode.
Claims (5)
1. A manual-automatic integrated double-side push circuit breaker input end isolation body of a mining high-voltage power distribution cabinet comprises a fixed contact (1), a U-shaped horizontal moving frame right guide rail (4) and a U-shaped horizontal moving frame left guide rail (13) which are arranged on a middle partition plate, wherein a U-shaped horizontal moving frame (3) is movably arranged between the U-shaped horizontal moving frame right guide rail (4) and the U-shaped horizontal moving frame left guide rail (13), and a moving contact (2) is arranged on a transverse plate of the U-shaped horizontal moving frame (3), and is characterized in that a right driving deflector rod inserting strip through hole (9) is arranged on the right side plate of the U-shaped horizontal moving frame (3), and a left driving deflector rod inserting strip through hole (16) is arranged on the left side plate of the U-shaped horizontal moving frame (3); a pair of right screw rod supports (5) are arranged on the outer side of a right side plate of the U-shaped horizontal moving frame (3), a right screw rod (6) is arranged on the pair of right screw rod supports (5), a right screw rod nut (7) is arranged on the right screw rod (6), a right driving deflector rod (8) is connected onto the right screw rod nut (7), the other end of the right driving deflector rod (8) is inserted into a right driving deflector rod insertion strip through hole (9), a pair of left screw rod supports (10) are arranged on the outer side of a left side plate of the U-shaped horizontal moving frame (3), a left screw rod (11) is arranged on the pair of left screw rod supports (10), a left screw rod nut (12) is arranged on the left screw rod (11), a left driving deflector rod is connected onto the left screw rod nut (12), and the other end of the left driving deflector rod is inserted into a left driving deflector; the front end of a left screw rod (11) is connected with the output end of a left worm gear commutator (17), the input end of the left worm gear commutator (17) is connected with one output end of a double-end output motor (19), the other output end of the double-end output motor (19) is connected with the input end of a right worm gear commutator (18) through a connecting shaft (20), and the output end of the right worm gear commutator (18) is connected with the front end of a right screw rod (6); the double-end output motor (19) is electrically connected with the remote central control room; connecting axle (20) is scalable universal joint, be provided with driven sprocket (21) on connecting axle (20), fixed hand transmission shaft bearing (24) that is provided with in driven sprocket (21) below, be provided with hand transmission shaft in hand transmission shaft bearing (24), be connected with drive sprocket (22) at the left end of hand transmission shaft, right-hand member at hand transmission shaft is connected with driven gear (25), the meshing has driving gear (26) on driven gear (25), driving gear (26) link together with handle (27), be provided with drive chain (23) between driven sprocket (21) and drive sprocket (22).
2. The manual-automatic integrated double-side push breaker input end isolation body of the high-voltage power distribution cabinet for the mine according to claim 1, wherein a limiting plate (28) is arranged at the top end of a pair of right screw rod supports (5), a limiting strip through hole (29) is arranged on the limiting plate (28), an inserting reminding limiting switch (30) and a separating in-place reminding limiting switch (31) are respectively arranged on one side of the limiting strip through hole (29), a movable limiting plate (32) is arranged in the limiting strip through hole (29), and the lower end of the movable limiting plate (32) is connected to the right screw rod nut (7); the plug-in reminding limit switch (30) is electrically connected with a plug-in reminding indicator lamp, and the separation in-place reminding limit switch (31) is electrically connected with a separation in-place reminding indicator lamp.
3. The manual-automatic integrated double-side-push circuit breaker input end isolation body of the high-voltage power distribution cabinet for the mine according to claim 2, wherein the plug-in reminding limit switch (30) is arranged on the limit switch mounting plate (34), a limit switch position adjusting strip through hole (35) is arranged on the limit switch mounting plate (34), a fixing screw (36) fixedly connects the limit switch mounting plate (34) to the limit plate (28) through the limit switch position adjusting strip through hole (35), and a plug-in-place buffering top end section (33) of the limit strip through hole (29) is arranged on the front side of the plug-in reminding limit switch (30).
4. The input end isolation body of the manual-automatic integrated double-side push circuit breaker of the mining high-voltage power distribution cabinet according to claim 3, wherein a right side alignment buffer gap (40) in the front-back horizontal direction is arranged between the right driving deflector rod (8) and the right driving deflector rod insertion strip through hole (9); a left side alignment buffer gap in the front-back horizontal direction is arranged between the left driving deflector rod and the left driving deflector rod insertion strip through hole (16); a transverse plate of the U-shaped horizontal moving frame (3) is provided with a left and right horizontal direction position adjusting long through hole (38), and the moving contact (2) is fixedly connected in the left and right horizontal direction position adjusting long through hole (38) through a moving contact fixing screw (39); the rectangular through hole of vertical direction position adjustment about being provided with (37) on the right side board of U-shaped horizontal migration frame (3), right side guide arm (15) are through guide arm set screw (41) fixed connection in the rectangular through hole of vertical direction position adjustment about in (37), be provided with the rectangular through hole of vertical direction position adjustment about the left on the left side board of U-shaped horizontal migration frame (3), left side guide arm (14) are through left guide arm set screw fixed connection in the rectangular through hole of vertical direction position adjustment about the left.
5. The input end isolation body of the manual-automatic integrated double-side propelling circuit breaker of the high-voltage power distribution cabinet for the mine according to claim 4, wherein a right guide rod (15) is arranged on a right side plate of the U-shaped horizontal moving frame (3), the right guide rod (15) is movably arranged in a guide groove of the right guide rail (4) of the U-shaped horizontal moving frame, a left guide rod (14) is arranged on a left side plate of the U-shaped horizontal moving frame (3), and the left guide rod (14) is movably arranged in a guide groove of the left guide rail (13) of the U-shaped horizontal moving frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558601.5U CN211629014U (en) | 2020-04-15 | 2020-04-15 | Manual-automatic integrated double-side propelling circuit breaker input end isolation body of high-voltage power distribution cabinet for mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558601.5U CN211629014U (en) | 2020-04-15 | 2020-04-15 | Manual-automatic integrated double-side propelling circuit breaker input end isolation body of high-voltage power distribution cabinet for mine |
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| CN211629014U true CN211629014U (en) | 2020-10-02 |
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| CN202020558601.5U Active CN211629014U (en) | 2020-04-15 | 2020-04-15 | Manual-automatic integrated double-side propelling circuit breaker input end isolation body of high-voltage power distribution cabinet for mine |
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